Corrosion resistant chemical centrifugal pump is static seal what pattern is there?

Corrosion resistant chemical centrifugal pump is static seal usually have a gasket seal, o-rings, thread seal type, etc. Use all kinds of gaskets, o-rings and other static seal is called static seal. Chemical pump static seal material selection usually fluorine rubber skeleton oil seal, special circumstances to choose ptfe.

1, the o-ring seal that is commonly used in water pump is rubber o-rings. Because its shape is very simple, and thus made easy, low cost, no matter how big is the overall size of the o-rings, the section size are small, Only a few millimeters) So light weight, low material consumption, use method is simple, installation, convenient disassembly, more prominent advantages is o-ring has good sealing ability, using range is very wide.

static seal pressure can reach more than 100 mpa and dynamic seal can be up to 30 mpa. Suitable temperature for - 60 ~ 200 ℃, can meet the requirements of a variety of media. So in the design of the pump to get more and more widely used.

O ring is installed between the groove and seal face, have a certain amount of compression, the resulting rebound given sealed smooth surface and groove bottom to initial compressive stress. Thus the sealing effect.

when the sealed fluid pressure increases, the deformation of the o-ring also increase, which is passed to the sealing surface pressure is increased, the role of sealing also increased. This is the reason why O ring has good sealing ability.

2, gasket seal sealing methods commonly used corrosion-resistant chemical centrifugal pump, gasket seal method. Gasket is the basic element of centrifugal pump is static seal, using range is very wide. Gasket selection is mainly according to the chemical pump transmission medium, such as temperature, pressure and corrosion factors.

gasket sealing mechanism:

leak the medium flows from within limited space to the external, or from outside into the limited space within the phenomenon of people don't want to happen, the medium flows through the inside and outside space interface sealing surface leakage. Root causes of the leakage is due to the contact surface gap exists, and the pressure difference on both sides of the contact surface, the concentration difference is the driving force for the leak.

because of the sealing surface form and machining accuracy, the influence of such factors as seal surface exist gap is inevitable, it can cause sealing surface is not perfectly, thus the leaking. To reduce the leakage, it is necessary to make the interface maximum chimeric, namely reduce leakage channel cross-sectional area, increase the leakage resistance, leakage and make it is greater than the driving force.

exert pressure on seal face load, should to produce compression force, can increase the degree of sealing surface contact, when the stress increases clearly enough to cause surface plastic deformation, can fill the sealing face of the gap, plug leak path.

the purpose of the gasket is the use of gasket materials under the action of pressure load, easy to produce plastic deformation characteristics, tiny uneven bridge flange sealing surface, so as to realize seal.

gasket choice:

chemical centrifugal water pump sealing gasket selection, volatile corrosion were extracted by chemical pump medium, explosion, etc. The existence of the risk, seal performance of pump body, a much higher than other types of pumps. Sealing methods commonly used chemical pump, gasket seal method. Gasket is the basic element of centrifugal pump is static seal, using range is very wide. Gasket selection is mainly according to the chemical pump transmission medium, such as temperature, pressure and corrosion factors.

when chemical pump transmission medium, the temperature and pressure is not high, generally choose nonmetal sealing gasket;

when corrosion resistant chemical centrifugal pump transmission medium for high temperature, medium voltage combination of non-metal and metal gasket.

non-metallic gaskets used most commonly in the pump, its material is paper, rubber and ptfe. When the temperature does not exceed 120 ℃, pressure in 1. 0 mpa, generally choose fish paper or paper gasket.

if the chemical pump transmission medium for the oil, temperature in - Is generally selected 30 ~ 110 ℃, good nitrile butadiene rubber aging resistance. Dangdang chemical pump transmission medium, in - When 50 ~ 200 ℃, choose fluorine rubber is more appropriate. Because it besides oil resistant heat resistant, mechanical strength and its main features.

due to the corrosive medium in the chemical pump, so generally chooses ptfe gasket materials. With more and more widely in chemical pump used in fields, the medium type more and more, so when choosing spacer material should consult the relevant information or through the experiment and then make the right choice.

3, oil seal,

corrosion-resistant chemical pump oil seal lips of seal is a self-tightening type, its simple structure, small size, low cost, easy maintenance, resistance torque is small, can not only prevent medium leakage, also can prevent external dust and other harmful substances into, and have certain compensation ability to wear, but not resistant to high pressure, so commonly used in the chemical pump on occasion.

chemical pump depends on the centrifugal principle to extract liquid materials, special material chemical water pump is suitable for the bottles, barrels, tanks, and extract the corrosive liquid pool and other containers. Due to the corrosion were extracted by chemical pump medium, volatile, explosion, etc. The existence of the risk, seal performance of pump body, a much higher than other types of pumps.

chemical pump seal should be installed in the manufacturing accuracy of h8 ~ h9, surface roughness of 1. 6 ~ 0. 8 microns and after surface hardening treatment of shaft. Sealing medium should not containing solid particles and impurities, otherwise it will cause rapid wear of oil seal and shaft and make the seal failure.

In the present growing world of emerging technology, the has demanding operation in various sectors like pool cover drain pump, winter cover pump, pool cover drain pump and many other industries at winter cover pump levels of manufacturing and designing.
Are you interested in buying ? We also have all kinds of in offer. Visit J&T INDUSTRY to know more and order, we have them at pocket friendly prices.
If you need any help in submersible pump pool cover drain pump, J&T INDUSTRY CO.,LTD. can help you. We provide the best in class. Our design and services will enable you to create the ideal room that you have always wanted!
winter cover pump submersible pump quality is more important because some how it affects to our pool cover drain pump. So grab good quality .