Dry screw vacuum pump is widely used in which industries
With the development of industrial production, people have higher and higher requirements on the vacuum system. The appearance of dry screw vacuum pump has replaced the traditional vacuum system, which has great market competitiveness and development potential. So dry screw vacuum pump widely used in what industries? Do you know the application of dry screw vacuum pump? Let's learn about it.
The use of solvent crystallization process of raw materials, generally after the crystallization of filtration, washing and vacuum boring. The moisture content is generally 20% ~ 200%. The solvent contained in the wet materials is generally flammable, explosive, toxic and harmful medium. They are removed by the vacuum unit in the boring process.
Traditional wet vacuum system in choose roots - liquid ring vacuum pump unit, liquid ring pump sealing fluid in operation will dissolve or absorb part of the organic solvent, the separation of waste gas in the
The dry screw vacuum pump is
General requirements of the pump running temperature under 80 ℃, but only relying on the pump body jacketed cooling can't make the pump running down to such a low temperature, the other at the scene of the most cannot supply cooling water, can supply coolant is gasoline; In order to reduce the operating temperature of the pump, in addition to injecting gasoline into the jacket of the pump body, the most useful method is to inject an appropriate amount of gasoline into the pump chamber (at the highest temperature) to reduce the temperature of the pump chamber by transpiration and heat absorption, as shown in FIG. 17.
Because the screw vacuum pump in the process of oil and gas recovery, condensed gasoline will be stacked in the pump exhaust, this phenomenon will form abnormal liquid pump oscillation and noise, and must be timely discharge, to this end can adopt the following three ways to improve.
Pump exhaust pipe downward tilt, exhaust pipe position lower than the pump exhaust position.
At the lowest position of the pump exhaust or silencer, a circulating pump is installed to eliminate fluid accumulation.
At the exhaust port of the pump, the one-way valve is installed to prevent the condensate from flowing into the pump chamber due to siphon when the pump is suspended.
Dry screw vacuum pumps are used for space simulation
Because the space
Firstly, the slide valve pump operates for a long time under high inlet pressure. Because the airflow has effects, the oil injection phenomenon is very serious. Firstly, it wastes a lot of expensive oil; secondly, it pollutes the environment.
Because the pumped gas contains a lot of water vapor or nitrogen oxides, these gases once into the pump will make the vacuum pump oil emulsification deterioration, oil sealing damage, leading to the decline of vacuum function, and even make the pump destroyed;
The number of required equipment pump is large, and the sliding valve pump oscillation, noise is also large;
