Attention to details of vacuum unit

Many places can not do without the use of vacuum pump units, but also in use, some places are easy to be ignored, in order to prevent users from bringing some unnecessary losses during the use, it is necessary to understand: what places are easy to be ignored in the use of vacuum pump units? 

General vacuum pump unit will choose the pump head is very high. For centrifugal water ring vacuum pump, after determining the model, the power consumption is directly proportional to the actual flow of the pump. The flow rate will decrease with the increase of lift, such as high head, small flow rate and low power consumption.

In order to prevent motor overload, the vacuum pump unit will require the actual pumping head of the vacuum pump, which can not be 60% lower than the rated head. Therefore, when the high head is used to pump water with too low head, the motor capacity will be overloaded, and in serious cases, the motor will be burned. In emergency use, to connect a gate valve to adjust the water flow on the outlet pipe, so as to reduce the flow and prevent overload of the motor.

It should be noted that if the motor temperature rise, the motor is too hot, it is necessary to turn off the water outlet flow or shut down in time. Many people will misunderstand this, some operators will feel: blocking the water outlet, forced to reduce its flow, can increase the motor load. This is not the case at all. Therefore, in the use of vacuum pump units, the problem of motor temperature rise should be solved in time.

What Are The Applications Of Vacuum Pump In Papermaking Industry

Claw Vacuum Pump Long Term Heating Causes

Water Ring Vacuum Pump Insufficient Suction Causes 

Features of Roots vacuum pump

Roots vacuum pump is a kind of pump caused by two "8-shaped" relative rotating rotors, which causes volume change to produce vacuum, so it is also called positive displacement pump. During operation, it is necessary to have a continuous contact line at the point where the rotor of the pump is required to engage, so as to prevent gas from flowing back from the vent to the vacuum pump. Therefore, it is necessary to check the engagement of the two rotors frequently during operation. With the extension of construction time, the impeller has been worn for a long time, and restricted by the directional rotation, forming the non-uniformity of meshing space between the two impellers, and even collision, making the impeller appear a circular and solitary external depression.

1. It is necessary to install roots vacuum pump in a dry, well ventilated and clean place.

2. The ambient temperature of Roots vacuum pump is 5-40 ° C.

3. Roots vacuum pump has necessary horizontal device, and there should be enough space around for daily inspection and maintenance, so it is easy to install and disassemble.

4. After connecting the power supply, the direction of the motor shall be as shown by the direction arrow on the pump.

5. It is necessary to clean the pipes connecting the pumping vessel. There should be no impurities and other foreign matters, the diameter of the hole should not be less than the diameter of the pump port, and the length should be short to ensure that it has enough conductivity, and the pipe connection is necessary to seal.

6. It is necessary for the gas to be pumped to be free of solid particles entering the pump room.

Therefore, the two impeller rotors are worn in different degrees in terms of outer diameter and length, and the gap between the impeller rotor and the shell is also increased. Therefore, the vacuum degree of Roots vacuum pump is reduced, and the time is large and small. It is necessary to adjust and adjust the clearance between the impeller and the clearance between the end cover and the pump housing in time.

Roots Vacuum Pump

Piston Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Explain the advantages of water ring vacuum pump

The water ring vacuum pump is equipped with an axial force motor rotor with fixed blades, which throws water (liquid) to the stator wall of the motor. The water (liquid) occurs in the same boat with the stator of the motor. The liquid ring and the rotor blades of the motor form a variable capacity imported true air pump. So what are the advantages of water ring vacuum pump? Here is a specific introduction.

The structure is simple, the production accuracy is not high, very simple production and processing; the structure is compact, the pump speed is relatively high, usually can be directly connected with the motor, without speed reduction equipment. Therefore, with a small structure standard, it can have a large displacement and a small floor area; most of the compressed air is isothermal, that is, the temperature of the whole process of the compressed air changes little; because there is no metal material conflict with the surface layer in the pump cavity, it is unnecessary to carry out the humidification in the pump, and the damage is not big.

The airtightness of the rotating parts and the fixed card center can be immediately carried out by the exhaust valve; the water ring vacuum pump also has the advantages of uniform suction, stable and reliable operation, convenient use, quick maintenance, etc. Together with the water ring vacuum pump is mainly used in coal, chemical plants, pharmaceutical industry, mining, paper industry, food, wine, decoration building materials, plastics, metallurgy, electrical and other industries.

Water Ring Vacuum Pump

Water Ring Vacuum Pump manufacturers

What is water ring vacuum pump

Small vacuum pump

Small vacuum pump is also called micro vacuum pump because of its small volume. Small vacuum pump (i.e. micro vacuum pump) refers to an instrument that has one suction nozzle and one exhaust nozzle, and can continuously form vacuum or negative pressure at the inlet; micro positive pressure is formed at the exhaust nozzle; the working medium is mainly gas, and the volume is small. Small vacuum pump can be used for air conditioning, refrigeration equipment repair, suction device of medical instruments, printing machinery, vacuum packaging, vacuum plastic suction, physical and chemical experiments and small devices requiring vacuum environment. The scope of application covers scientific research, gas sampling, instruments, chemical analysis, medical and health care, medical and health care, bioengineering, automatic control, environmental protection, water treatment and many other fields.

The small vacuum pump is not suitable for pumping out the gas which corrodes the ferrous metal, reacts with the pump oil chemically, contains the particle dust, as well as the toxic gas which contains too much oxygen and is explosive. It can not be used as a transfer pump (i.e. pumping from one container to another).

The circular motion of the small vacuum pump motor makes the diaphragm inside the pump do reciprocating motion through the mechanical device, so as to compress and stretch the air in the fixed volume pump cavity to form a vacuum (negative pressure), and generate a pressure difference with the external atmospheric pressure at the pump suction port, under the effect of the pressure difference, the gas pressure (suction) into the pump cavity, and then discharge from the exhaust port.

Water Ring Vacuum Pump

Water Ring Vacuum Pump manufacturers

What is water ring vacuum pump

Oil sealed vacuum pump in semiconductor industry

The oil seal vacuum pump is the rotary vane vacuum pump, which is generally the front stage vacuum pump of the vacuum unit. This kind of pump compresses various mixed gases into atmospheric pressure and discharges them into the exhaust pipe in the range of 60-100 ℃. If the pressure, concentration and temperature of hazardous products in the pump are relatively high, these substances will accumulate in the pump and its accessories, and these substances will contact with the surrounding air in the exhaust pipe, etc., which will constitute a potential danger.

For the harmful gases produced or used in semiconductor manufacturing, appropriate measurement methods must be adopted to prevent fire and explosion, ensure the normal operation of the equipment, and prevent the acute or chronic poisoning of operators, maintenance personnel and service personnel. For the sake of safety, suitable vacuum pumps and accessories with sufficient pumping force shall be equipped, and reasonable operation and maintenance methods shall be adopted, and appropriate monitoring devices shall be equipped.

Vacuum Pump Features

Water Ring Pump

Water Ring Vacuum Pump

Select high efficiency vacuum pump

Select high efficiency vacuum pump

The imported vacuum pump for transporting hot petroleum products shall be preheated evenly before starting. Preheating can be accomplished by circulating hot oil through a pump, and the temperature of the pump shell shall not be 40% lower than the working temperature of petroleum products. The cracking feed pump, on average, should be preheated for about 8 hours.

If the vacuum pump is preheated unevenly, it will occur: (1) the deflection of the vacuum unit and the distortion of the shaft; (2) the cracks on the pump housing; (3) the rotating parts of the rotor are stuck.

During the circulation of hot oil, there should be no dead angle in the vacuum pump, especially in the lower part of the pump casing, where the cold oil products will gather; otherwise, the upper part of the pump casing will be hotter than the lower part. Hot petroleum products shall be free to circulate along the entire surface of the pump casing.

In fact, the measurement proves that when the temperature difference between the lower shell wall and the upper shell wall of the outer pump shell is 180, the distortion of the outer bearing relative to the pump center line is equal to 5mm; in this case, the distance between the bearing centers is equal to 2m.

In order to prevent the rotor from being stuck due to temperature expansion of parts in axial and radial directions, sufficient axial and radial clearance (axial clearance of 4-7mm) shall be reserved.

When the vacuum pump draws the polluted gas, the vacuum pump manufacturer generally recommends the simple matching of "pump + motor" to the user. This kind of simple configuration product, the working water can only be used once, the discharged working water not only pollutes the environment, but also causes waste of water resources. If the automatic control process is adopted, temperature transmitter and intelligent regulating valve are equipped, and the opening of regulating valve is controlled by temperature signal, the purpose of saving cooling water can be achieved.

Dry Screw Vacuum Pump Operation Steps

How To Choose Vacuum System

Select Best Water Ring Vacuum Pump

vacuum pump structure type

(1) Overall structure type of pump

The overall structure of the vacuum pump is determined by the arrangement of the pump body.

The vertical structure has horizontal inlet and outlet, and it is convenient to assemble and connect pipelines. But the center of gravity of the pump is high, and its stability is poor at high speed, so this type of pump is mostly used for small pump.

The air inlet of the horizontal pump is on the top and the air outlet is on the bottom. Sometimes, in order to facilitate the installation and connection of vacuum system pipes, the exhaust port can be connected from the horizontal direction, that is, the inlet and exhaust directions are mutually perpendicular. At this time, the exhaust port can be opened from the left or right direction. In addition to connecting one end of the exhaust pipe, the other end is blocked or connected with the bypass valve. The pump has low center of gravity and good stability at high speed. Generally, large and medium-sized pumps use this structure.

The two rotor shafts of the pump are installed vertically with the horizontal plane. The assembly clearance of the structure is easy to control, the rotor is easy to assemble and the pump occupies a small area. However, the center of gravity of the pump is high and the gear is inconvenient to be disassembled, and the lubricating mechanism is relatively complex.

 

(2) Transmission mode of pump

The two rotors of vacuum pump are operated synchronously by a pair of high precision gears. The driving shaft is connected with the motor through the coupling. There are mainly two types of transmission structure arrangement: one is that the motor and gear are placed on the same side of the rotor as shown in the figure. Driven rotor is directly driven by the motor end gear, so that the torsional deformation of the active rotor shaft is small, the gap between the two rotors will not be changed due to the large torsional deformation of the active shaft, so that the gap between the rotors is even in the operation process. The biggest disadvantages of this kind of transmission mode are: A. There are three bearings on the driving shaft, which increases the difficulty of pump processing and assembly, and the disassembly and adjustment of gears are also inconvenient; B. the overall structure is uneven, and the center of gravity of the pump is inclined to one side of the motor and gearbox.

Water Ring Vacuum Pump Performance Test

Roots Vacuum Pump

Dry Scroll Vacuum Pump

Selection scheme of vacuum pump unit

Selection scheme of vacuum pump unit

Vacuum pump unit is usually composed of the following parts: various vacuum pumps; vacuum measuring unit; vacuum valve; vacuum pipe and some other components, such as blower, vacuum connector, air tank, bellows, dust collector and vacuum relay.

According to the working pressure of the unit, there are crude vacuum pump unit (> 1330pa), low vacuum pump unit (1330 ~ 0.13pa), high vacuum pump unit (0.13 ~ 1.3 × 10-6 PA), ultra-high vacuum pump unit (1.3 × 10-6) ~ 1.3 × 10-11 PA and very high vacuum pump unit (< 1.2 × 10-11 PA).

Roots vacuum pump (supercharger pump) for high vacuum can not be directly discharged into the atmosphere. For example, the direct exhaust atmosphere will cause the pressure difference between the inlet and the exhaust port of the roots vacuum pump to be too large, thus overloading the roots vacuum pump. Increasing the power of the roots vacuum pump motor will cause the roots vacuum pump to overheat, so the small gap between the roots vacuum pump rotors will be stuck rapidly due to thermal expansion. In order to ensure that the roots vacuum pump can achieve a higher degree of vacuum, it is necessary to ensure the gap between the rotors of Roots vacuum pump. Therefore, the roots vacuum pump must be equipped with a front-end pump. When the pressure in the system is pumped to a certain range through the front-end pump, the roots vacuum pump is started, which can prevent the roots vacuum pump from overloading. The front stage pump can be a vacuum pump which can be directly discharged into the atmosphere, such as water (liquid) ring vacuum pump, rotary vane vacuum pump, slide valve vacuum pump or reciprocating vacuum pump.

Under normal conditions, roots vacuum pump unit has more advantages than other vacuum pumps in using water ring pump as the front stage pump, mainly because it can remove a large number of condensable steam, especially when the mechanical vacuum pump in the gas town eliminates condensation. There is insufficient steam capacity, or the solvent used will degrade the pump oil and affect the performance, or it is more obvious when the vacuum system does not allow oil pollution.

The main characteristics of low vacuum pump unit are high working pressure and large displacement, but the pumping speed is lower than that of high vacuum pump unit. It is widely used in vacuum pumping and vacuum cleaning, vacuum impregnation, vacuum cleaning, vacuum degassing, vacuum drying and other equipment. The main pump of low vacuum pump unit is commonly used reciprocating vacuum pump, oil seal vacuum pump, water jet pump, water steam jet pump, water ring pump, oil steam jet pump, molecular sieve adsorption pump and roots pump. When using the low vacuum pump unit, the components such as dust collector and dry filter must also be configured according to the process requirements of cleanness and humidity of the pumped gas.

Vacuum System For Epoxy Resin Casting

air-cooled roots-liquid ring vacuum system

Open Cycle Water Ring Vacuum System

What kind of vacuum pump is good for plastic industry

What kind of vacuum pump is good for plastic industry

The vacuum pump is mainly used in the molding process of the blister. It uses the suction generated by the vacuum pump to heat and soften the blister material, and then clings to the blister abrasive to form the product. According to the thickness of materials, there are two categories: thick material and thin material.

When selecting vacuum pump for blister, it is necessary to select vacuum pump according to specific process, mainly referring to the following two main parameters:

Vacuum degree: the so-called vacuum degree is a way to express the degree of air thinness, usually expressed in units such as Pascal, mbar, mmHg, etc.

After the molding of the Blister products, the product bubbles are mostly due to the vacuum degree can not meet the requirements, resulting in the product defects. Compared with products with deep grooves, the requirements of vacuum degree are relatively high.

Flow: refers to the volume of fluid pumped by vacuum pump through closed pipe or effective section in unit time, which is usually expressed as m3 / h, L / s, L / min

Vacuum flow is an important sign to measure suction. When selecting vacuum pump, we should pay attention to the specification and thickness of the product to calculate the amount of air to be removed in an hour or a minute, so as to determine the amount of flow needed.

Liquid Ring Air Compressor

Vacuum System Of Vacuum Brazing

Water Ring Vacuum Pump In Vacuum Concentration

Selection of main pump and auxiliary pump of vacuum pump unit

Selection of main pump and auxiliary pump of vacuum pump unit

Vacuum pump unit is composed of roots pump as the main pump and rotary vane pump as the front pump in series. But it doesn't mean that the two pumps can be combined and used casually. Only by meeting certain requirements can the two pumps form a unit. The composition conditions are as follows:

The function of the front stage pump is to reduce the vacuum discharge pressure of roots pump, so as to control the pressure difference and compression ratio between the inlet and exhaust within a certain range. Because the compression ratio of roots pump is limited, it is important to choose pumping speed. The compression ratio of roots pump changes with the change of discharge pressure. At high discharge pressure, the compression ratio is 3:1, and the compression ratio can reach 40:1 or higher between 1 and 10 mbar.

The pumping speed of the front stage pump shall be selected according to the long-term working pressure range of the vacuum pump unit. In addition, we should consider the demand for the length of pre pumping time. If the working time is longer than the pre pumping time, a smaller pre pump can be selected;

If the vacuum chamber is large, and it is required to reach the pre vacuumizing degree soon, a large pre-stage pump shall be used. It should be noted that the actual operation time difference of roots pump shall not exceed its allowable value, and it is generally recommended to control it below 75%, otherwise, the vacuum pump unit will overheat, overload or bite.

The selection of vacuum pump unit needs to be considered from the service conditions of the main pump and auxiliary pump, so that it can not only be used to extract air and other non condensable and non corrosive gases, but also can be used in various vacuum systems requiring large pumping speed and high vacuum.

VACUUM FURNACE

industrial vacuum pumps,vacuum furnaces

Heat treatment equipment

Water ring vacuum pump in mine

Water ring vacuum pump in mine

Water ring vacuum pump system is usually composed of vacuum pump, coupling, air-water separator and pipeline. With the help of the rotating impeller, the water ring vacuum pump makes water or other working liquid form a rotating liquid ring, through which the gas pumped is compressed and discharged to obtain vacuum.

The air in the suction pipe is pumped out by the water ring vacuum pump, so as to form a vacuum in the closed suction pipe and the pump body and generate a negative pressure. Depending on the atmospheric pressure, the water is pumped from the suction pipe to the pump body. The direction of water injection is from bottom to top. With this way of water injection, the vacuum degree of the water suction pipe and the pump body is stable, and the water pressure is put into the water suction pipe and the pump body by the atmospheric pressure, which overcomes the self weight of the water in the water suction pipe and can meet the vacuum degree requirements of the main drainage pump during drainage.
Vacuum Pump In Vacuum Packaging Machine

Liquid Ring Vacuum compressor

Water ring vacuum pump

Advantages of 2BV vacuum pump

Advantages of 2BV vacuum pump

2BV vacuum pump, as a common integral structure, is a single-stage pump with coaxial pump. When we use it, we will be concerned about it because of its overall advantages. Let's introduce its advantages for you.

2BV vacuum pump adopts mechanical seal, which is installed between impeller and pump body. The clearance between impeller and pump body is determined by mechanical seal. A disc is installed on the cover of the vacuum pump. The disc is equipped with suction and exhaust holes and flexible exhaust valve plates. The function of the flexible valve plate is to discharge the gas before the exhaust port when the gas pressure between the impeller blades reaches the exhaust pressure, so as to reduce the power consumption due to the excessive gas pressure, thus reducing the rate consumption.

2BV vacuum pump consists of pump cover, pump body, disc, impeller, mechanical seal, motor and other parts. The exhaust pipe of the intake pipe is connected with the pump cavity through the suction hole and the exhaust hole on the disc installed on the pump cover, the shaft is installed in the pump body eccentrically, the impeller is fixed on the shaft with a flat key, and the part gap between the two end faces of the vacuum pump is adjusted by the pad between the pump body and the disc.

The gap between the impeller of 2BV vacuum pump and the disc on the pump cover is adjusted by the pad between the disc and the pump body. The gap between the two end faces of the impeller and the disc on the pump cover determines the loss of gas in the pump cavity from the air inlet to the exhaust port and its limit pressure.

Vacuum Pump In Salt Industry

Paper Production Line Vacuum Pump

Evaporation Concentration Vacuum Pump

Roots vacuum pump for vacuum distillation unit

Roots vacuum pump for vacuum distillation unit

Roots vacuum pump unit can operate for a long time in the field of high pressure. According to the performance and characteristics of Roots vacuum unit, this paper summarizes the economic benefits obtained after replacing the water steam jet vacuum pump in the petroleum vacuum distillation unit, and gives you specific reasons.

1. Almost all the vacuum distillation units in domestic refineries are used to use the traditional steam jet vacuum pump as the main means of evacuation. Although the structure of the water steam jet vacuum pump is simple, the maintenance is small and the operation is reliable, it consumes a lot of water steam and cooling water, but the obtained vacuum degree is low, which makes the crude oil not get deep displacement and the oil displacement rate is low;

2. Because there is a large amount of condensate mixed with the condensate of oil vapor, it wastes oil and causes serious environmental pollution The so-called "dry distillation" is used in the pressure reducing devices of refineries in the United States and Japan. In addition to the transformation of the original pressure reducing tower, the main purpose is to select and modify the design of the evacuation equipment. In the United States, roots vacuum pump with return air-conditioner is used as the main pump to overcome the heating of Roots vacuum pump unit when it operates under high pressure.

The reason of the vacuum pump used in each equipment has different purposes and functions. Of course, only after we have a more familiar understanding can we judge why it is used in this equipment.

Dry Screw Vacuum Pump Oil Vapor Recovery

Dry Type Oilless Vacuum Pumps

Liquid Ring Vacuum compressor

Method of reducing power consumption of water ring vacuum pump

Method of reducing power consumption of water ring vacuum pump

When using the water ring vacuum pump, we should be prepared for energy saving, so as to ensure the service life of the equipment. The following editor will introduce several ways to reduce the power consumption of water ring vacuum pump.

1. For the damage of water ring vacuum pump bearing: the treatment method is to check, repair or replace the bearing.

2. Too high speed: check the driver and power supply.

3. The liquid density of water ring vacuum pump increases: the treatment method is to check the liquid density.

4. Pump shaft bending: the treatment method is to correct the pump shaft.

5. The packing of water ring vacuum pump is pressed too tight or dry friction: the treatment method is to loosen the packing and check the water seal pipe.

6. There is friction between impeller and wear ring, impeller and shell. The treatment method is to check and repair.

7. Failure of axial force balance device: the treatment method is to check whether the balance hole and return pipe are blocked.

8. Coupling alignment is poor or axial clearance is too small: the treatment method is to check alignment and adjust axial clearance.

As long as you ensure that when there is a problem, according to the above methods, you can greatly reduce the power consumption of the vacuum pump, increase the service life of the water ring vacuum pump, and better serve you.

2BE3 Series Liquid Ring Vacuum Pump

Water ring vacuum pump

Rotary Vane Vacuum Pump

Characteristics of Roots vacuum pump

Characteristics of Roots vacuum pump

Roots vacuum pump has been used in various industrial sectors 30 years ago, some of which are still in use. Roots vacuum pump can solve any vacuum problems in the paper-making process, such as tissue paper plate, printing paper plate, vacuum dehydrator and other industries. The performance of the vacuum pump has reached a very high level because of putting various improvement measures into the production process.

The main advantage of using roots vacuum pump is that if the pump is installed and used according to the specified technical indicators, it can always coordinate the normal production of paper machine and improve the output.

According to the given point of the paper machine, a specific pump can be selected properly, so that its capacity can meet the needs of the point according to the output and operation index of the paper machine.

Roots Vacuum Pump

ZJ Roots Vacuum Pump

ZJP Roots Vacuum Pump

Closed cycle system of liquid ring vacuum pump

Closed cycle system of liquid ring vacuum pump

The application of water ring vacuum pump is more and more extensive. Generally, after we master its use method, we will not understand its system components. The more we know about the closed-circuit circulation system of liquid ring vacuum pump, it will help us better use it and make it play a better role.

The closed-circuit circulation of liquid ring vacuum pump is a complete set of equipment composed of vacuum pump, steam water separator, heat exchanger and various pipeline accessories. Compared with a single vacuum pump, it is more convenient to install.

Because the working fluid can be recycled, the system greatly reduces the consumption of the working fluid and the pollution to the environment, so it is toxic in the extracted gas, and the extracted gas contains organic solvents and other occasions with obvious advantages. Vacuum pump closed-circuit circulation system can be used in most applications.

The above briefly introduces the closed-circuit circulation system of liquid ring positive air pump. After we understand its system significance, we can find out the root cause when using it, which is also helpful for us to use it for a longer time and improve our work efficiency.

air-cooled roots-liquid ring vacuum system

Open Cycle Water Ring Vacuum System

Closed Cycle Water Ring Vacuum System

Composition of complete vacuum system

Composition of complete vacuum system

There are many kinds of vacuum application equipment, but no matter what kind of vacuum application equipment, there is a set of extraction system to remove the gas in the evacuated container, so as to obtain the required vacuum conditions in the vacuum container. For example, a container for vacuum treatment is connected with a vacuum pump by pipes and valves. When the vacuum pump vacuumizes the container, there must be a vacuum measuring device on the container, which constitutes the simplest vacuum pumping system.

For a vacuum system composed of more than two vacuum pumps in series, the low vacuum pump is usually called the front pump (or pre pump) of its upper high vacuum pump, and the highest vacuum pump is called the main pump of the vacuum system, that is, it is the main pump. The limit vacuum degree and working vacuum degree in the pumped container are determined by the main pump. The pipeline from the outlet of the pumped vessel to the inlet of the main pump is called high vacuum pipeline, and the valve at the inlet of the main pump is called the main valve.

Usually, the front pump is also used as a vacuum pump. The pipeline from the pumped container to the pre pumping pump is called the pre vacuum pipeline, and the valve on the pipeline is called the pre vacuum pipeline valve. The pipeline from the outlet of main pump to the inlet of front stage pump is called front stage pipeline, and the valve on the pipeline is called front stage pipeline valve, while the soft connection pipeline is set to isolate the vibration of front stage pump.

Water Ring Vacuum Pump Maintenance Guide

How To Select Vacuum Pump For Vacuum Distillation

Roots Vacuum Pump System Selection

Influence of water temperature on vacuum degree of water ring vacuum pump

Influence of water temperature on vacuum degree of water ring vacuum pump

After purchasing the water ring vacuum pump of our company for the first time, the user thinks that as long as the water is supplied by the water ring vacuum pump, the water temperature, pressure and other factors will not be considered. If the pump is used for a long time, it will bring adverse consequences to the water ring pump.

There are two reasons why the water temperature of water ring vacuum pump should not be too high:

Reason 1: because the water temperature is related to the suction capacity, the working fluid temperature is high, and the air volume will decrease.

Reason 2: working fluid in water ring vacuum pump mainly plays the role of sealing and cooling

The working liquid temperature of water ring vacuum pump will exceed 50 ℃ after working for n hours, so it is recommended to install a condenser to enhance the efficiency of the pump.

Because the water temperature is related to the suction capacity, the working fluid temperature is high, and the air volume will decrease. With the increase of temperature, the evaporation capacity also increases, occupying the discharge capacity of raw water ring vacuum pump, reducing the suction capacity, and prolonging the vacuumizing time. In addition, under the vacuum condition, the evaporation capacity of sealing liquid will also increase with the increase of temperature, and the larger the percentage of the discharge capacity of vacuum pump, the situation that cannot be vacuumized will occur. As for the data involved too much, the evaporation capacity of sealing liquid at various vacuum degrees is not the same as that at various temperatures. Only at a certain vacuum degree can we reflect the change of temperature and cause the change of evaporation capacity. Or vice versa. In use, it must be combined with temperature, vacuum two performance curves and pump performance curve superposition can be seen.

Liquid Ring Vacuum Pump

Roots Vacuum Pump

2BE1 Series Liquid Ring Vacuum Pump

Miniature vacuum pump

Miniature vacuum pump

Miniature vacuum pump is widely used in many industries because of its own advantages. The volume of the equipment is very small in the process of using. There is no oil in the process of using the miniature vacuum pump, so it is very environmentally friendly in the process of using.

Nowadays, the specifications of miniature vacuum pump are very many. In the process of selecting, the manufacturer first needs to clarify the use of the equipment. If the equipment does not need manual water before pumping, the pump can pump the low water more effectively, otherwise it will be unable to pump and damaged. This happened.

The advantage of the miniature vacuum pump is that when the equipment is not in contact with water, it directly pumps the vacuum. After the vacuum is formed in the equipment, it needs to press the water up by air pressure, and then start pumping. In the process of using, it may be pumped directly because there is no water in the pump. After forming a vacuum, the water is pressurized by air pressure, and then pumped.

The resistance of the miniature vacuum pump appears in the process of pumping, and then reduces the scope of selection according to its judgment conditions. But in the process of using the amount, we need to consider the exhaust end of the equipment in time, so as to better select the optional range.

In the practical application of micro vacuum pump, the exhaust status of the equipment is different. One is that the exhaust is relatively smooth and directly to its atmosphere. The other is that the exhaust resistance is relatively large, such as the exhaust pipeline has valves, large damp sensors and other components.

Water ring vacuum pump

Вакуумная печь

VACUUM FURNACE

vacuum pumps,vacuum furnaces

Cautions in the Use of Vacuum Pump System

Vacuum pump system and vacuum pump are inseparable. When different vacuum pump systems are used, they are matters needing attention. Knowing these, we can better use them. Now we have a detailed knowledge of some vacuum pump systems.

Firstly, the method of combining vacuum pumps should be: in special cases, one kind of vacuum pump can not meet our needs, so we should combine several kinds of vacuum pumps, so that their pumping effect is higher and they can complement each other. For example, some vacuum pumps are good at pumping hydrogen, but not good at pumping other gases, but the group is good at pumping other gases. When combined, the desired pumping effect will be achieved, which requires a vacuum unit.

Second, we should pay attention to the oil vapor discharged by vacuum pumps. Some vacuum pumps will discharged oil vapor. In places with high environmental requirements, there is no pollution at all. Oil-free vacuum pumps can be used or oil vapor can be discharged outside. During the use of vacuum units, there will be vibration. If the required environment can not have vibration, it is necessary to use a vacuum pump without vibration, or use other methods to make the vibration smaller. Vacuum pumps need to be maintained in the process of use, in order to make better use of it. Atmospheric pressure will also affect the work of the vacuum pump system, the working environment determines which kind of vacuum pump you use, oil-free vacuum pump, water ring vacuum pump and so on.

JZJA(P)LG Screw pump system

ZJZSK Roots Liquid Ring Vacuum Pump System