About the advantages of water ring vacuum pump _

water ring vacuum pump is a liquid ring vacuum pump is one of the most common. Liquid ring vacuum pump is installed in the pump housing rotor blades have more eccentric. Thrown when it rotates, the fluid and the pump shell liquid ring pump casing concentric with the stated, formation volume displacement pump and liquid ring of rotor blade rotation cycle. When the working fluid is water, the water ring pump.

water ring vacuum pump application in PVC industry

in recent years our country launched a number of large basic construction and technical transformation projects, these projects are real child needs a lot of PVC material, especially the real estate boom, more to promote the development of PVC industry and chlor-alkail industry, according to statistics, China last year produced 4. 1 million tons of polyvinyl chloride (PVC) imported 200 tonnes. According to the forecast of the industry, the demand will reach 8 million tons in 2005, and in 2010 will reach 15 million tons, it is because the demand for high speed increase, expansion has made chlor-alkail industry of our country enterprise and reform, and nearly one or two years on the new for many enterprises. The development of chlor-alkali enterprises, must form a complete set of water in the empty pump and water ring compressor j to pumping and compression of acetylene and hydrogen water ring vacuum pump and water ring compressor 30 m3 / min, but in the past and now an annual output of 100000 tons of 100000 tons of caustic soda and polyvinyl chloride (PVC) enterprise, need water ring vacuum pump and water ring compressor reach more than 70 m3 / min.

water ring vacuum pumps and other types of mechanical vacuum pump has the following advantages compared to

1, simple structure, manufacturing accuracy is not high, easy to processing.

2, compact structure, the revolutions of the pump is higher, can generally be direct connects with motor, speed reducer. So with the structure of the small size, you can get large displacement, covers an area of small also.

3, compressed gas is isothermal (basic Usually polytropic compression index n = 1. 1 ~ 1. 15) , namely the process of compressed gas, temperature change is very small.

4, cavity no metal friction surface, the pump inside without lubrication, and wear and tear is small, clearance between the rotating and fixed parts can be sealed by the liquid.

5, inhale and uniform, stable and reliable, simple operation, convenient maintenance

water ring vacuum pump and reasonable export pipeline plan

(1) the vacuum system and the shorter the distance between the entrance of the pump as possible;

(2) pipe bend as little as possible;

3. Import pipeline should be higher than that of the entrance to the centerline of the pump, outlet pipe should avoid a large resistance caused by factors, such as the outlet pipe up, right-angle bend, etc;

(4) with the import and export pipe diameter should be consistent with the product import and export of diameter, such as vacuum system is small, with import and export over diameter can be small, but shall not be less than 70%, the diameter of the products import and export and export diameter should be greater than or equal to the inlet pipe diameter;

(5) line of turning should be smooth transition;

6 water ring vacuum pump inlet pipe of the road to install the valve, how to regulate water inflow and water inflow of how much has influence to the vacuum degree, adjust the water inflow by observing the vacuum table pointer to control the valve, SK - 0. 8 the limits of the vacuum can achieve - 0. 087, in the working status, because the line is not completely sealed state, degree of vacuum in - 0. 06 around can meet the job requirements.

2, installation or maintenance line, to prevent falling into foreign body.

3, pipe joint shall be added gasket, can not have leakage, leakage phenomenon.

4, vacuum system of inspiratory mouth install vacuum gauge, to master the vacuum changes.

5, the intake pipe installed on the valve when the vacuum degree reaches the limit would produce a lot of noise, called cavitation noise, through the valve to adjust the degree of vacuum, high vacuum, pressure blasting machines, open the valve to put off the right amount of gas, cavitation noise disappear immediately, close the valve when the vacuum degree drops.

6, one of the important role of circulating water is used to cool the temperature of the vacuum pump work when, when more than 40 degrees, the water temperature of circulating water vacuum degree decreases, timely supplement or replace cold water to reduce the temperature of the circulating water, iron fence equipment on the vacuum pump oil drums for circulating water, the bucket of water to some more.