Influence of working conditions on the service life of slurry pump

Slurry pump in different industries play a different role, then the wear conditions are different, so the service life is also different. Slurry pump has been used in mineral processing, electric power, coal washing, sand separation and other fields. In the mineral processing industry, the working condition of ore primary separation is bad, so the service life of slurry pump is low. Of course, different ores have different abrasivity. 

For example, in the concentrate transportation section, the relative abrasion resistance is reduced, and the overall service life of the pump is longer. In the field of coal washing, larger coal block and coal gangue are easy to block the slurry pump, which is also easy to reduce the service life of slurry pump. In the fields of electric power, sand selection and other fields, due to the different working environment, there are different degrees of abrasion on the special pump of aerated concrete, which has a certain impact on the service life of the submerged slurry pump. Therefore, in the purchasing process, the general user often asks the service life of the supplier's products. 

Strictly speaking, any manufacturer will not promise an accurate service life cycle for users without any basis, because the service life of flow passage components depends on many different factors, and the diversity and complexity of working conditions lead to different service life of materials with the same quality. But in the early selection aspect, we can let the powerful manufacturers help to select the type. The use of aerated concrete pump is easy to wear, and its service life is also greatly affected. However, the use efficiency of slurry pump can be higher through reasonable design, correct operation and regular maintenance.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Roots vacuum pump unit in petroleum distillation

Roots vacuum pump unit in petroleum distillation

According to the performance and characteristics of Roots vacuum unit, the economic benefits of replacing steam jet vacuum pump in vacuum distillation unit are summarized. It has many functions, but it is not well known. Then the next small edition for its application in petroleum distillation, to make a simple introduction for you, let's take a look at it.

The traditional vacuum pump of steam jet is used as the main means of evacuation in almost all the vacuum distillation units of domestic refineries. Although the water steam jet vacuum pump is simple in structure, small in maintenance and reliable in operation, it consumes a lot of water steam and cooling water, but the vacuum obtained is relatively low, which makes the crude oil not get deep displacement and the oil displacement rate is relatively low. In addition, there are a lot of condensate mixed with the condensate of oil vapor, which wastes oil and causes serious environmental pollution In other countries, the so-called "dry distillation" is used in the refinery pressure reducing devices. In addition to the transformation of the original decompression tower.

Roots vacuum pump unit is mainly to select and modify the design of the evacuation equipment. Roots vacuum pump with return air-conditioner is used as the main pump in the United States to overcome the heating of Roots vacuum pump under high pressure. The two-stage water ring vacuum pump is selected as the front stage vacuum pump to form the air extraction unit. In addition, a cold source is needed to maintain the long-term operation of the unit. Therefore, the design structure is more complex and the cost is more expensive.

Roots vacuum pump unit has a wide range of applications. It can't only be used in common fields. In fact, it can also be seen in many industries with partial doors. It plays different roles in different industries and fields. Therefore, it is necessary to be more careful in product selection.
Difference Between Screw Vacuum Pump And Liquid Ring Vacuum Pump

Vacuum System In The Manufacture Of Aeromechanical And Electrical Components

Liquid Ring Vacuum Pump

Inlet pipe of vacuum pump

Inlet pipe of vacuum pump

Generally, in the process of vacuum pump installation, many people change the inlet diameter of the equipment at will for the convenience of installation. The consequence is that it is easy to cause great use impact in the later production.

We'd better not change the size of each part of the vacuum pump at will. It's manufactured and installed at will after the designer's research in production. It will have a bad impact on the vacuum pump in the future use.

If the inlet size is reduced, the flow rate of the pump will increase, and the flow loss will increase accordingly. In addition, there may be serious cavitation problems caused by eddy current. When the rotating speed is high, it will cause vibration of the pipeline and aggravate the progress of cavitation. Because of the existence of vibration, the operation of the vacuum pump will be unbalanced and easy to cause leakage. Therefore, when piping, we should configure the corresponding pipes according to the factory standard of the manufacturer to avoid unnecessary troubles.

Therefore, when installing the vacuum pump, we must install it in accordance with the operating instructions. We can't change it at will, which will cause inconvenience in later use and safety in production.

Vacuum Pump In Oil And Gas Recovery

Oilless Vacuum Pumps

Liquid Ring Vacuum compressor

Cleaning method of liquid ring vacuum pump

Cleaning method of liquid ring vacuum pump

The cleaning of liquid ring vacuum pump is an important aspect of the maintenance of water ring pump, because it is hard to avoid some dirt in the pump cavity when the liquid ring vacuum pump is used for a long time. With the increase of time, the dirt covers the inside of the pump cavity, which has a great adverse impact on the performance of the pump!

In order to make the liquid ring vacuum pump last for a long time and keep its performance stable, daily maintenance work is inevitable. Only by doing a good job of cleaning it, it can work for us normally. The machine also needs to be taken care of, not only for the appearance of cleaning, but also for the interior to keep clean. Speaking of this, some people may think that it's OK to wash it with water. In fact, it's only necessary to wash it with water. This method is not enough, because there may be scale or other substances in the vacuum pump running for a long time. It is not enough to use only clean water for treatment. Clean the pump once.

How to clean the liquid ring vacuum pump correctly? Today, I'll teach you a simple and easy to learn method, which is to dilute nitric acid or other soluble substances, but do not use those with high purity, which will directly damage the internal components of the vacuum pump, put them in the container and wait for about an hour, and then wash them directly with water. If there is pressure, the effect will be achieved. Will be better, such cleaning steps is not very simple, only regular maintenance of the pump, in order to extend its life.

Of course, cleaning the liquid ring vacuum pump is only one aspect. In the daily maintenance, there are many components that need to be maintained by the user. For example, if any component is seriously worn, it must be replaced. Otherwise, it will directly affect the operation of the vacuum pump. If there is a problem in the pipeline, find out the cause of the leakage, and repair it in time. All these work should be checked every day during the use. Yes, as long as every detail is important, there will be no big problem with the vacuum pump.

Oil Free Vacuum Pumps

Liquid Ring Vacuum compressor

Water ring vacuum pump

Jet Pump Application

 Jet Pump Application

Jet pump is widely used in escort, compaction of mixed gas and steam, liquid and solid equipment, gas or liquid is often used as power medium. Jet pump is another very important application for generating vacuum.

The main principle of jet pump is that the liquid, gas or solid around is driven and accelerated by the liquid or gas ejected from the power nozzle at high speed. This movement leads to a mix of drive and carry-on. The velocity of injection decreases at the diffuse point while the pressure increases. Unlike traditional pumps, jet pumps have no moving parts in operation.

Jet pumps can be made from a variety of materials, such as cast iron, steel, stainless steel, Hastelloy, titanium, enamel, glass, plastics and graphite, and can be made into various sizes. When the suction volume is from 1 to 2000 000 m3/h and the suction pressure is 10-2 mbar, the size can be from several centimeters to more than 30 meters.

Due to the diversity of jet pump, it has been widely used in various fields, such as chemical reactor, exhaust system, water treatment equipment, mixing tank, storage tank, waste water treatment equipment, heating system, heating gas supply system, power plant, swimming pool, salmon factory water supply and so on. And the composition of vacuum in different industrial categories.

It is an important application field that water vapor is used as a power medium to form a vacuum for jet pumps. Its guaranteed high-speed injection is several times the speed of sound, so the jet pump can easily dispose of large-capacity materials in vacuum.

Roots Vacuum Pump

Liquid Ring Vacuum compressor

Water Ring Vacuum Pump Corrosion Repair

After using water ring vacuum pump for a period of time, if the maintenance is not in place, it is easy to cause corrosion, which can be divided into two categories: overall corrosion and local corrosion. The former occurs more evenly on all surfaces of the equipment, while the latter occurs only locally. For example, pitting corrosion, crevice corrosion, intergranular corrosion, stress corrosion cracking, corrosion fatigue, hydrogen corrosion cracking, wear corrosion, delamination corrosion and so on. After serious corrosion, the working efficiency of the equipment is reduced and even needs to be replaced. Enterprises invest heavily. Corrosion repair is the key to solve this kind of problem.

Repair steps:

(1) Surface treatment: thoroughly remove the oxide layer on the surface, and clean the surface with acetone.

(2) Harmonizing material: Harmonize strictly according to the proportion, and mix evenly until there is no color difference.

(3) Daubing material: first, apply a thin layer of material, to ensure that the bonding and full coverage, and then evenly apply the material to the repair surface, to meet the required repair thickness can be.

(4) Curing: 24 hours/24 C (material temperature). The curing time can be reduced by half for every 11 C increase in material temperature, but the increase temperature should not exceed the material's withstanding temperature.

(5) Installation and precautions: Installation should be carried out according to assembly requirements. Repair and protection materials should avoid being knocked or impacted by external forces. If materials affect assembly, grinding method can be used to deal with them. Never knock, so as to avoid damaging other materials.

The application of polymer composite repairing materials in the corrosion protection of surface organic coatings is one of the effective measures to repair the corrosion of water ring vacuum pumps. Surface adhesion protection can be widely used in the repair and pre-protection of abrasion, cavitation and corrosion parts. It has good chemical resistance, excellent mechanical properties and bonding properties. Compared with the traditional welding repair of pressure vessel, it has the characteristics of simple construction, low cost, safety performance and good repair effect.

Principle-of-Gas-liquid-Separation-Technology-for-Vacuum-Pump

Latest-Liquid-Ring-Vacuum-Pump-System

How-to-Solve-the-Injection-of-Rotary-Vacuum-Pump

How-to-Solve-High-Temperature-of-Vacuum-Pump

How to use vacuum pump oil more effectively?

Vacuum pumps are devices that improve, create, and maintain vacuum in a closed space in a variety of ways. According to the working principle of the vacuum pump, the vacuum pump can basically be divided into two types, namely, a gas trap pump and a gas transfer pump. It is widely used in metallurgy, chemical, food, electronic coating and other industries. The correct use of vacuum pump oil is very important for the normal operation of the vacuum pump, how to use the vacuum pump oil more effectively.

Questions about the cleanliness of vacuum pump oil use and how to deal with it:

1. The window for loading oil must be clean. It is strictly forbidden to be exposed to sunlight and stored in the open air. It should be stored in a dark, dry and ventilated place with strict waterproofing and dust mixing.

2, the fueling appliance must have special equipment, should not be a container filled with other oils or solvents; pump.

3. When taking oil or loading oil, the light rain around the lid must be removed to prevent the impurities from mixing into the oil and causing the pump to wear.

4. When changing oil, drain the oil used in the pump body, pour the new oil into the pump shaft slowly, clean the pump chamber and drain the oil, repeat the cleaning several times, and then replace it with new oil after washing. .

5. When mineral oil is exchanged with ester oil or other synthetic oil, the vacuum pump should be disassembled for thorough cleaning. All parts, including all parts, must be immersed in ester oil to prevent contamination.

6. When the vacuum pump is overhauled, the components of the pump must be cleaned with solvent or cleaning agent, and the parts must be dried.

factory-direct-sale-high-vacuum-oil-diffusion-pump

Vacuum-Pump-oil-for-ultra-high-vacuum-diffusion-pump

Vacuum-Diffusion-Pump-Oil-For-Metal-Diffusion-Pumps

How to Select Vacuum Pump

The function of vacuum pump is to extract gas molecules from the vacuum chamber, reduce the gas pressure in the vacuum chamber, and make it meet the required vacuum degree. Generally speaking, there is a large range from atmosphere to very high vacuum. So far, no vacuum system can cover this range. Therefore, in order to meet the requirements of process index, working efficiency and equipment working life of different products, different vacuum sections need to choose different vacuum system configuration. In order to achieve the best configuration, the following points should be taken into account when choosing the vacuum system:Roots-vacuum-Pumps-For-PVD-Coating-Machines

1. Determine the working vacuum range - first of all, we must check and determine the vacuum required by each process. Because each process has its own suitable vacuum range, it must be carefully studied and determined.

2. Determine the limit vacuum degree - Check the limit vacuum degree of the vacuum pump system on the basis of determining the vacuum degree required by the process, because the limit vacuum degree of the system determines the best working vacuum degree of the system. Generally speaking, the limit vacuum of the system is 20% lower than the working vacuum of the system and 50% lower than the limit vacuum of the front pump.Rotary-Vane-Vacuum-Pump-or-Glass-Reactor

3. Types and volumes of pumped gases - Check and determine the types and volumes of pumped gases required by the process. Because if the type of pumped gas reacts with the liquid in the pump, the pump system will be polluted. At the same time, it must be considered to determine the appropriate exhaust time and the amount of gas produced in the process of exhaust.

Finally, we should consider the vacuum volume of the vacuum pump, check and determine the time required to achieve the required vacuum degree, the flow resistance and leakage of the vacuum pipeline, and consider that after meeting the required vacuum degree, we should maintain the required vacuum extraction rate under certain technological conditions.Slide-Vane-Rotary-Vacuum-Pump-for-Milking-Machine

water ring pump operation

Whether the water ring pump can be operated correctly is not only related to its service life, but also has an impact on its operation safety. In the process of equipment operation, it is essential to standardize the operation. The following is a summary of the operation rules of equipment shutdown:

1. When stopping the pump, it is necessary to close the valve on the injection line of the pump body, close the sealing liquid valve, shut down the motor, close the inlet and outlet valves of the pump, and confirm that the inlet and outlet valves of the pump are completely closed.rotary-vane-vacuum-pump-in-paper-industry

2. Isolation, emptying closes the inlet valve of the pump, closes the outlet valve of the pump, closes the supplement valve of the steam-water separator, confirms that the inlet and outlet valve of the pump closes and opens the exhaust valve of the steam-water separator. Open the pump body vent valve and confirm that the medium in the pump is clean.

3. Delivery and maintenance confirm that the inlet and outlet valves of the pumps are closed, that the pumps have been completely isolated from the system, that the pumps have been drained clean, that the drain condensation valves are opened, and that the motor is cut off. Get ready near the pump.vacuum pump manufacturer

4, in addition, equipment and auxiliary systems need to be inspected and maintained.
(1) check whether the pump has abnormal vibration or murmurs.
(2) check whether the bearing temperature is normal.
(3) check whether the leakage of packing seal meets the requirements.
(4) check whether the cooling water is normal.
(5) check whether the static seal is leaking.
(6) if there is any impurity in the liquid in the pump, after the pump is stopped, open the bottom of the pump and empty the water.
(7) the equipment needs to be replaced after 2000 hours of operation.

Roots vacuum pump application

The practicability of Roots Vacuum Pump for the development of the whole state, so that its performance advantages continue to increase, in the process of strengthening the overall construction and improvement of products, we should strengthen the development of its overall foundation, according to the actual production capacity, from product expansion to the improvement of the processing level of each component, all of them should be integrated. Only in this way can we continuously provide reliable product development for users according to market demand, and effectively enhance their overall application ability for future continuous development.

In order to embody the practicability of Roots vacuum pump, through the improvement of the basic capacity of all aspects of the product, the actual development of the product has been strengthened. Under the continuous improvement of the overall strength of the basic development of the product, according to the effective embodiment of its production capacity, the practical application ability has been enhanced, and its products have been continuously improved. In the application effect, the practical application ability of the product is effectively expanded, so as to further enhance the development of the overall practical ability, reflecting the strength of the product.

The continuous improvement of the application process is very important for the development of Roots vacuum pump. To further develop and apply and improve its overall strength, only relying on advanced technical performance advantages can we enhance the overall utilization ability of products effectively.

If you want to know more about our  vacuum pump products,  please leave a message or send us an email at contact@evpvacuum.com

Roots vacuum pump -Vacuum distillation

Application and improvement of vacuum distillation roots vacuum pump

In order to solve the problems of Roots vacuum pump in distillation engineering, two aspects of technology and equipment are adopted to tackle the key problems together. After analysis and research, our company thinks that we should consider the factor of increasing vacuum. In theory, the increase of temperature will accelerate the speed of resinization of materials, and the long residence time of materials will increase the amount of resin. The best way to solve these two problems is to increase the vacuum degree in the pot.

First, raising the vacuum degree can reduce the boiling point of the material, that is, reduce the bubble point temperature in distillation operation.
Secondly, increasing the vacuum degree can increase the driving force of distillation and speed up the steaming rate of materials.

In the distillation process, the vacuum equipment we used in the past is a common reciprocating vacuum pump. Its performance parameters are the pumping rate of 150 L/S, the limit vacuum degree of 2600 PA and the motor power of 15 kw. The present method is to use Roots vacuum pump with high vacuum degree in series with reciprocating vacuum pump, and the vacuum degree and pumping rate will be greatly improved.

If you want to know more about our  vacuum pump products,  please leave a message or send us an email at contact@evpvacuum.com
 web：https://www.evpvacuum.com
Tel: 0086-21-50878057

Vacuum pump oil

A screw vacuum pump is a device that uses various methods to improve, create, and maintain a vacuum in an enclosed space. According to the working principle of vacuum pump, it is widely used in metallurgy, chemical, food, electronic coating and other industries. The correct use of vacuum pump oil is very important for the normal operation of the screw vacuum pump.

1. The window for oil loading must be clean and clean. It is strictly prohibited to be exposed to sunlight and stored in the open air. It should be stored in a dark, dry and ventilated place, and it should be mixed with water and dust.

2. The fueling appliance must be special equipment and should not be a container filled with other oils or solvents.turbo-molecular-pump-structure

3. When taking oil or loading oil, the impurities around the lid must be removed to prevent the impurities from mixing into the oil and causing the pump to wear.

4. When changing oil, drain the oil used in the pump body, pour the new oil into the pump shaft slowly, clean the pump chamber and drain the oil, repeat the cleaning several times, and then replace it with new oil after washing.

5. When mineral oil is exchanged with ester oil or other synthetic oil, the vacuum pump should be disassembled for thorough cleaning. All parts and components must be immersed in the ester oil to prevent contamination.

6. When the screw vacuum pump is overhauled, the components of the pump must be cleaned with solvent or cleaning agent, and the parts must be dried.
Two-stage-rotary-vane-vacuum-pump

Vacuum pump unit functional structure

Different vacuum systems require different degrees of vacuum. Therefore, it often needs to be completed by a set of vacuum pumps. That is, by working in series with vacuum pumps in different pressure ranges, the vacuum pump on the high vacuum side can reach the vacuum required by the system, while the vacuum pump on the low vacuum side is directly exhausted. Obviously, a relatively simple vacuum pump unit is a vacuum pump with direct discharge. But a high vacuum system usually needs three units, and a medium vacuum usually requires two units. A high vacuum pump and a low vacuum pump are difficult to form an effective high vacuum pump unit. But if a middle vacuum pump is connected between the high and low vacuum pumps, it can play the role of connecting the top and bottom, continuous flow, and each pump can work in the best state.

Vacuum pump is to pump out the gas in the vacuum vessel, but often the pump's air outlet can not be directly connected with the pumped vessel. Because of the technical needs or to reduce the pollution degree of the vacuum pump unit with oil vapor pollution, it is necessary to connect with the pumped vessel through the cold trap, valve, pipeline. The pipe diameter of vacuum pump unit is large, the resistance loss will be small under the condition of the same flow rate and small liquid velocity; if the pipe diameter is small, the resistance loss will be aggravated. Therefore, the intake pipe of vacuum pump unit should be equipped with a valve, which is used to regulate the amount of water intake, the amount of water intake has an impact on the degree of vacuum. When regulating the amount of water intake, the valve is controlled by checking the pointer of the vacuum meter.

The material selection and sealing of the pipes and valves above the inlet of the main pump of the vacuum pump unit should be especially careful. Stainless steel and metal sealing structure and sealing materials are generally used.Vacuum-unit-introduction

Water ring pump stop pump operating procedures

Whether the water ring pump can be operated correctly is not only related to its service life, but also has an impact on its operation safety. In order to standardize the operation of the equipment during the operation process, the operation after pump stopping is also very important.

1. When stopping the pump, it is necessary to close the valve on the injection line of the pump body, close the sealing fluid valve, stop the motor, close the pump inlet and outlet valve, and make sure that the pump inlet and outlet valve is completely closed.

2. Isolate, empty and close the inlet valve of the pump, close the outlet valve of the pump, close the replenishment valve of the steam-water separator, and confirm that the inlet and outlet valve of the pump closes and opens the exhaust valve of the steam-water separator. Open the pump body vent valve and confirm that the medium in the pump is clean.

3. Delivery inspection confirms that the pump inlet and outlet valve is closed, confirms that the pump has been completely isolated from the system, confirms that the pump has been drained clean, the drain valve opens the vent valve, confirms that the motor is powered off. Get ready near the pump.

4, in addition, equipment and auxiliary systems need to be inspected and maintained.
(1) check whether the pump has abnormal vibration or murmurs.
(2) check whether the bearing temperature is normal.
(3) check whether the leakage of packing seal meets the requirements.
(4) check whether the cooling water is normal.
(5) check whether the static seal is leaking.
(6) if there is any impurity in the liquid in the pump, after the pump is stopped, open the bottom of the pump and empty the water.
(7) the equipment needs to be replaced after 2000 hours of operation.

Molecular Vacuum Pump Price

SK water ring vacuum pump works

We need to be prepared before we do anything, so is the case with SK water ring vacuum pumps. Before you use it, you need to be well prepared to get twice the result with half the effort.

1. Before we use it, we should check the rotation of the pump shaft of SK water ring vacuum pump to see if it is normal, whether it is stuck or not, and whether the position of the impeller is normal.

2, SK water ring vacuum pump cable and cable plug whether there is rupture, scratching and breaking phenomenon.piston-vacuum-pump

3. In operation, we should pay attention to the change of the pump voltage, which is generally controlled within the range of (+5%) rated voltage.

4. The position of SK water ring vacuum pump in water is very important. It should be selected as far as possible in places with abundant water, no silt and good water quality. Vertical suspension in water is not allowed to be placed horizontally, so as to avoid falling into the mud or blocking the inlet of the pump by suspended solids, resulting in a sharp decrease in water output and even no water can be pumped.

Before we use SK water ring vacuum pump, we must have an understanding of the whole, while we are in production, to the machine first operation, testing, so that we can ensure that the use of the process to reduce abnormal phenomena.

APPLICATION OF WATER RING VACUUM PUMP IN CANNING MACHINE

The vacuum pumping system consists of a vacuum pump, a pressure stabilizer, a dust collector, and a valve link retainer. The selection of vacuum degree and air volume of vacuum pump is the key to the success of V method appearance. The normal maximum vacuum in consumption is around -66500pa (-500mmhg). The pressure stabilizer is a sealed container, whose function is to stabilize the pressure of the vacuum system, to buffer the influence of the system pressure on the appearance, and to filter dust. Dust removal tank; Sandbox for a long time the recycle and pouring molten iron on the formation of a sandbox screen pack's destroyed easily damaged, the sand is formed in the suction vacuum pump wear and tear, had better be in into the vacuum pump money increase dust catcher, link dust removal tank the last into the vacuum pump, to ensure the using life of vacuum pump.When selecting vacuum pumping system, the capacity of vacuum pump should be confirmed first.Application-of-water-ring-vacuum-pump-in-canning-machine

Consider the following elements:

1. The size and quantity of sand boxes that need to work in a vacuum at the same time;

2. The number of casting types simultaneously cast;

3. Size and shape of casting;

4, close to the film's cast appearance of permeability, it controls through the plastic film on the gap amount of air into the mold, so when pouring, casting coating helps to provide a "auxiliary seal layer".
What-does-vacuum-pump-oil-do

WHAT DOES VACUUM PUMP OIL DO

The general vacuum pump is mechanical vacuum pump, there are reciprocating vacuum pump, mechanical pressure pump, oil seal mechanical pump, slide valve type vacuum pump, slide type vacuum pump. Vacuum pump oil is a special lubricating oil specially prepared according to the performance requirements of mechanical vacuum pump.vacuum-parts/oil

During the operation of the vacuum pump equipment, the rotor slide or slide valve ring slides against the inner wall of the stator. In order to avoid scratches, materials are needed to lubricate the rotor. It can slide, indicating that there is a gap between the stator and rotor. In order to avoid air entry, material is required to seal. When the rotor and stator rub together at high speed, a lot of heat is generated. The above three points are the three basic functions of vacuum pump oil, lubrication, sealing and heat dissipation.What-does-vacuum-pump-oil-do

There is an oil channel in the bearing hole of the vacuum pump, which is connected with the main oil channel of the engine. The first is to set the oil intake hole, to achieve the oil intake control; The second is to set the oil hole on the shaft and sleeve at the same time. During the rotation process, when the two holes are in time for the oil inlet, the oil intake quantity can be controlled. Three is on inlet valve shaft sleeve, on CAM shaft, the shaft a week per rotation, the valve opens once, the control system for the input, into the vacuum pump of the lubricating oil by lower oil return hole to return to the engine oil pool.high-vacuum-usage-vacuum-pump-oil-of-1-L-clean-oil

Piston Vacuum Pump Air Ballast Valve

The piston vacuum pump is equipped with a pneumatic mechanism, which can speed up the extraction of steam without contaminating the oil. Such as when the rotary piston vacuum pump only smoke in addition to the permanent gases, gas liquefaction due to pressure increase, no pump oil degradation, but if you want to used for vacuum dry or moist air, is not only have a permanent gases and water vapor in the gas, if use without gas ballast valve pump take out this part of the water vapor, steam will be liquefied and dissolved in oil, the vacuum properties of oil degradation, and thus reduce the pumping speed of vacuum pump and vacuum degree.

The compression process of water vapor is further described as follows:

1. be pumped in addition to water vapor, should be in indoor compression, compression until the exhaust valve opens, if the assumption of temperature in the rotary piston vacuum pump is 60 ℃, temperature of the water in this saturated vapor pressure of 20000 Pa (149). 4), once the pressure is reached in compression in the process of water vapor condensation beginning to water, but the 20000 Pa (149.4) can’t open the exhaust valve, because the rotary piston vacuum pump exhaust valve leads to the atmosphere and exhaust valve spring pin (exhaust valve spring is calculated at 1.2 KGF/cm2), which is the rotary piston vacuum pump pump cavity internal pressure to compress to 120000 Pa to (900) or more to get pushed open the valve, the water vapor after the compression, the compression stage have all condenses into water, and mixed with oil.piston-vacuum-pump-air-ballast-valve

2. in order to meet the requirements of moist air ejector, but not oily water pollution, so the town of rotary piston vacuum pump is equipped with gas institutions, its principle is to add a certain amount of air in the process of compression in order to improve the pressure of the mixed gas, mixed gas pressure as the sum of air pressure and water vapor pressure in the steam partial pressure has yet to reach the pump under the temperature of saturated steam pressure, the mixed gas pressure more than exhaust valve and open the valve, the steam too late in the rotary piston vacuum pump H pump cavity were outside the discharge pump liquefied.

3. piston vacuum pump air ballast valve can be used for another purpose to restore the ultimate pressure of vacuum pump. Although sometimes we used to take in addition to the general air, containing less non-condensable gas, usually air valve is closed, but when the time is long, oily but was polluted by air contains a small amount can be non-condensable gas, for no gas ballast institutions pump, only change new oil, or the heat oil pump, let the liquefied steam evaporation pump can resume the original extreme pressure, but for rotary piston vacuum pump gas ballast pump, as long as open the gas ballast valve operation 1 to 2 hours of restoring the limit pressure of the vacuum pump.rotary-vacuum-pump-in-medicine

4. piston vacuum pump air ballast valve operation is very convenient. When using the pneumatic valve, you can open the handwheel of the pneumatic valve. The opening degree of the handwheel can be adjusted. And vice versa. Therefore, how much the handwheel is opened depends on the degree of vacuum required by the user. Generally speaking, when the handwheel is fully opened, its vacuum degree is 13 Pa(10-1 bracket). If the user does not need to add air, the valve can be closed.
installation-requirements-for-water-ring-pump-line

Installation Requirements For Water Ring Pump Line

In the use of water ring vacuum pump in the process of the installation of equipment, but the correct installation is the premise of guarantee the normal work in the future, so during the installation process should pay attention to what we should pay attention to the problem?installation-requirements-for-water-ring-pump-line

(1) derusting, cleaning and assembling of water ring pump equipment:

1. Before installation, the anti-rust oil or dry oil applied on the processing surface must be cleaned and cleaned. Before installation, the rusty parts should be thoroughly removed before assembly.

2. All pipelines on the equipment should be cleaned and kept unimpeded.

3. Be familiar with the drawings and understand the equipment structure before the assembly of the machine parts.

4. When assembling the equipment, it shall first check the appearance shape and dimension precision of the parts and assembly, and confirm that it meets the requirements before assembling.DLV_Series_Double_Stages_Water_Ring_Vacuum_Pumps

TYPE OF OIL DIFFUSION PUMP

The diffusion pump is called diffusion-type steam flow pump, and it is one of the steam flow pumps. Although there are many kinds of pump fluid, most of them are low saturated vapor pressure oil. As working liquid said by an oil diffusion pump oil diffusion pump, with mercury diffusion pump fluid called mercury diffusion pumps, oil diffusion pump is most commonly used, diffusion pump ensures the former level in 10-2 ~ 10-3 of vacuum conditions to be able to do the work well. Vacuum-pump-in-vacuum-distillation

A mechanical pump is usually used as a fore - stage pump. Ordinary diffusion pump can get 10-4 ~ 10 9 ultimate pressure, if the baffle or liquid nitrogen frozen cold trap, and to bake to gas containers, can get 10-8 to 10-11 of the ultra high vacuum, if the pump is well designed, coupled with the removal of oil steam reflux and strict measures such as permanent gas pollution sources, and then took in more than 10-14 supporting high vacuum can be reached.Type-of-oil-diffusion-pump

Diffusion pump's main advantage is: extraction capacity big, wide speed range, for various gases including inert gas (e.g., neon, helium, etc.) have the same pumping speed, this is unmatched by any other kind of pump; Moreover compared with other high vacuum or ultra high vacuum to obtain equipment, lower unit cost needed for pumping speed (no need to be very expensive, such as cryogenic pump condensing agent), simple structure, no mechanical rotation, easy to operate and can be recycled repeatedly, easy to maintain, long service life and is very easy to obtain high vacuum.
The-application-of-water-ring-vacuum-pump-in-coal-mine-industry