water ring vacuum pump Note for selecting

I. determination of water ring vacuum pump type

The type of water ring vacuum pump is mainly determined by the medium pumped, the amount of gas required for work, the degree of vacuum or the exhaust pressure.
After the water ring vacuum pump works normally, two points should be noted:
Vacuum pump is used in petrochemical industry

1, as far as possible demands the selected vacuum degree of vacuum pump in efficient interval, which is the critical need critical area of the exhaust pressure or vacuum operation, so as to ensure the vacuum pump according to the conditions and requirements to work properly. Avoid operating near the maximum vacuum degree or maximum exhaust pressure range of the vacuum pump. Operating in this area, not only is the efficiency extremely low, but also the work is very unstable, easy to make the vacuum pump vibration and noise. For vacuum pumps with high vacuum degree, cavitation often occurs during operation in this area. The obvious phenomenon is noise and vibration in the vacuum pump. Excessive cavitation will lead to damage of pump body, impeller and other parts, so that the vacuum pump can not work properly.

Liquid-ring-vacuum-pump-system-workflow

It can be seen that when the vacuum degree or gas pressure required by the vacuum pump is not high, it can be selected from the single-stage pump first. If higher requirements for vacuum or exhaust pressure, single pump often can not meet, or demand under the condition of high vacuum pump still has large volume, which requires performance curve at higher vacuum degree is relatively flat, can choose two stage pump. If the vacuum degree is above -710mmhg, the roots water ring vacuum unit can be selected as the vacuum extraction device.

2. Select the vacuum pump correctly according to the amount of gas required by the system

If selected or vacuum unit type vacuum pump, also need to according to the swept volume required by the system to choose the right model (on the extraction rate of vacuum equipment selection and extraction time can refer to a single product of our company introduction).Main parameters of vacuum pump

vacuum pump matters needing attention

1. The working pressure of the vacuum pump should meet the requirements of the extreme vacuum and working pressure of the vacuum equipment. For example, the working vacuum of 10mmHg is required by a certain vacuum drying process, and the ultimate vacuum of the selected vacuum pump should be at least 2mmHg, preferably up to 1mmHg. The limit vacuum of the pump is usually half to an order of magnitude higher than the operating vacuum of the vacuum equipment.

2. Select the working point of the vacuum pump correctly. Each pump has a certain working pressure range, such as: 2 bv series water ring vacuum pump working pressure range 760 MMHG ~ 25 MMHG (pabs), in such a wide pressure range, the pumping speed of the pump vary with the pressure change (details refer to the changes of the pump performance curve), its stable working pressure range is 760 ~ 60 MMHG. Therefore, the working point of the pump should be selected within this range, rather than allow it to work for a long time under 25-30mmhg.

3. Under the working pressure, the vacuum pump should be able to drain all the gas produced in the process of the vacuum equipment.

roots-vacuum-pump-rotor-configuration

4. Combine the vacuum pump correctly. Because the vacuum pump has the selective pumping, so, sometimes choose a kind of pump can not meet the pumping requirements, several kinds of pumps need to be combined to supplement each other to meet the pumping requirements. Such as titanium sublimation pump for hydrogen has a high pumping speed, but it can't take helium, sputtering ion pump and three pole type, type (or two extremely asymmetric cathode sputtering ion pump) to the argon pumping speed to a certain extent, the two together, will make the vacuum unit get good vacuum degree. In addition, some vacuum pumps can't work under atmospheric pressure and require prevacuum. Some vacuum pump outlet pressure is lower than atmospheric pressure, the need for the front stage pump, so the combination of the pump.

5. Requirements of vacuum equipment for oil pollution. If the equipment strictly requires no oil, should choose a variety of non-oil pumps, such as: water ring pump, molecular sieve adsorption pump, sputtering ion pump, low temperature pump, etc. If the requirements are not strict, the oil pump can be selected, and some anti-oil pollution measures, such as cold trap, baffle plate, oil trap, can also meet the requirements of clean vacuum.

vacuum-pump-in-different-applications-of-effect

6. Understand the components of the gas being pumped, including non-condensable vapor, particle dust, corrosion, etc. When selecting a vacuum pump, it is necessary to know the gas composition and select the corresponding pump for the gas being pumped. If the gas contains vapors, particles, and corrosive gases, consideration should be given to installing auxiliary equipment, such as condensers, dust collectors, on the inlet pipe of the pump.

7. How does the oil vapor from the vacuum pump affect the environment? If the environment is not allowed to be polluted, you can choose a non-oil vacuum pump, or oil vapor out of the room.

8. Whether the vibration produced during the operation of the vacuum pump has any influence on the process and environment? If the process is not allowed, the non-vibrating pump should be chosen or anti-vibration measures should be taken.

9. Price, operation and maintenance cost of vacuum pump.

water-ring-pump-coupling-installation-and-adjustment

Counterattack the broken pebble

Back to break the technical parameters is introduced, which can be learned that counterattack broken moderate capacity, processing the pebbles fineness size of under 100 nm, sand and gravel belongs to high quality raw material, then back to break the processing of pebbles what are the unique advantages? The main performances are as follows:Water cooling type oil lubricating rotary pump

Counterattack break feed port and discharging port are designed to lower density of grate, for the high moisture content of materials can be flowing in and out, there will be no material bonding, avoid equipment jams, large fault maintenance downtime.
Water cooling type oil lubricating rotary pump
Counterattack plate and plate hammer together properly, can give full play to the board hammer impact ability, improve the efficiency of crushing, the back plate and the crushing cavity clearance can be adjusted, realize the pebbles different discharging granularity, adjust convenient security.DLC film coating machine with unbalanced magnetron sputtering Ion plating

Easy loss parts more resistant to wear, plate hammer and crushing cavity is the key parts adopt Gao Jiangren, high wear resistance of chromium, vanadium alloy materials, greatly improving the service life of the equipment, and in the process of crushing, the material dispersed into the crushing cavity, for wear surface smaller plate hammer, replacement of parts work is also very simple and convenient.metal-injection-molding-furnace-market

Mobile crushing station production line construction waste treatment equipment

Mobile crushing station production line construction waste treatment equipment

Mobile crushing station production line construction waste disposal equipment, for the national energy conservation and environmental protection made a great contribution. In recent years, our country some local governments, research institutes and visionary enterprises have gradually realized the scientific disposal and comprehensive utilization of construction waste on the importance of saving resources, purifying environment, and beautify the city, at the same time, aware of the potential market prospect, and have carried out the construction waste resource recycling technology research and application practice, and obtained a certain result.

metals heat treatment furnace

Construction waste mobile crushing plant processing equipment can take advantage of the construction waste concrete, rock, slag, industrial waste residue, coal fly ash, non-metallic solid waste and other waste materials, building materials through crushing, sieving, forming epigenetic output meets the requirements of new building materials. The production of crushing station equipment running smoothly, easy to operate, good maneuverability. It only takes 60 minutes to install. Equipped with iron - removing device, can automatically separate the scrap steel, scrap wire and so on. Good environmental protection, little noise, little dust, little pollution.

welded impeller design

New peak of mine hammer crusher equipment

New peak of mine hammer crusher equipment

Environmental protection energy-saving mine hammer crusher is using high speed rotating hammer and material collision and broken ore, by the impact of the hammer head, knocking, shear processing, grinding way. The old equipment used in the operation of the noise, the dust and the environment and the construction personnel of the physical and psychological impact.Diamond Annealing Vacuum Furnace

Now the new type of crushing equipment is made by "one-piece" new technology, which reduces the gap between the parts, avoids the shaking problem and reduces the noise pollution. At the same time our factory is equipped with dustproof cover, can absorb the dust in the process area. The mining machinery industry is now a sunrise industry. Since the advent of the mine hammer crusher, it has rapidly developed the concept of "green new era".Tools industry Vacuum alloy induction furnace

We are surrounded by green and environment-friendly life. Our health is guaranteed to be guaranteed. The green age is not only the foundation of national governance, but also the expectation of every ordinary people. The vigorous promotion of mine hammer crusher will definitely support the development of all walks of life and promote the cause of green environmental protection in China.Perfume Bottle Cap Metalizing UV Coating Line Vacuum Metallizing

High Quality Silent Industrial Vacuum Pumps Water Ring Pump

How to do all kinds of work of sand and stone crushing production line?

How to do the work of gravel crushing production line, every day when we turn on production, we should first check the broken pieces of sand and stone for a few minutes.Compact Split Tube Furnace with Vacuum Flanges Quartz Tube

See if there is a good lubrication bearing, the connection in the bearing seat, and whether there is enough grease to check all the fastening is completely fixed.
6/10Bar Vacuum Gas Quenching Furnace For Titanium Alloy
The belt is good, and it is found that the marked crusher should be replaced in time, with a belt or pulley grease, a clean cloth to wipe his application and; The protective device is good.The working principle of water ring vacuum pump

If the protection device is found to be unsafe, it should be cancelled immediately. Whether ore crushing chamber or other feeding machine sundries, such as ore, or other debris, should be cancelled.

vacuum pressure sintering furnace

The crusher is recommended to be checked before the crusher is started, which proves that the mechanical transmission part is normal. The machine is permitted only under load conditions.Mini Titanium Nitri e PV Coating Machine

After starting, if abnormal conditions are found, the operation should be stopped immediately, the abnormal situation must be identified and eliminated, and then the crusher is started again.AC 220v Piston Vacuum Pump Low Pressure Electric Pumps

Recycling of construction waste

Modernization in the process of rapid development, the process of urbanization construction waste pile has caused more and more serious, and even in some areas appear the phenomenon of city construction waste and construction waste can recycling crushing reuse. Some of the construction waste is collected, removed or crushed, and most can be reused. According to existing technologies, the available methods are:China Manufacturer Vacuum Pyrolysis Furnace With Siemen 

1. Steel doors and Windows, scrap steel, iron nails and iron pipes, such as ferrous metal smelting or steel refining after the order of black and white iron.

2. The broken construction waste is classified as aggregate, which will replace natural aggregate concrete, road base materials and building bricks.

2H slide valve type vacuum pump

3. Glass or glass production of glass or glass-ceramics after the glass screen is sent.

4. Wooden doors and Windows can be reused or processed, or used to make medium-density fiberboard (MDF).hotsell thermal spray coating machine with powder coating oven burner
5. Waste brick can be reused after cleaning. Waste ceramic tile, ceramic sanitary ware crushing separation, composition and formation of water permeable brick or sintering tile.

The development of crusher equipment makes construction waste a better way to avoid pollution and create a more profit and more value, which is a good project.
high temperature porcelain furnace dental equipment

Construction waste is also more and more now, so in order to make full use of resources, save resources to save cost, we should make full use of the crusher, mill around, making use of the construction waste at the same time, countries in this respect also has a lot of benefits, for mill to be able to fully play a guiding role in the development.Big Sand Capacity Sand Pump Dredger With Lowest Price