Claw vacuum pump for aerospace

Posted on Tue, 11 Aug 2020 06:17:47 +0000

EVP is a high-tech enterprise specializing in the research, design, production and sales of claw type dry oil-free vacuum pump, with a number of national invention patents and utility model patents. Oil-free vacuum pump is widely used in high and new technology and national strategic technology ...

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electric vacuum butterfly valve classification

Posted on Tue, 11 Aug 2020 05:56:39 +0000

What do you know about the common classification of electric butterfly valve? Electric butterfly valve belongs to a variety of electric valve and electric control valve. The electric butterfly valve connection way mainly has: the flange type and the clamp type; the electric butterfly valve seal f...

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vane and exhaust valve in vane pump

Posted on Mon, 10 Aug 2020 08:15:34 +0000

Vane and exhaust valve in vane pump of function The vane always contacts with the inner wall of the pump chamber during the operation of the pump. Therefore, the vane should have certain strength and wear resistance. Generally speaking, cast iron, graphite and polymer composite materials are used...

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How to distinguish or select high, medium and low pressure valves

Posted on Mon, 10 Aug 2020 07:44:41 +0000

The service pressure of the valve is determined by the nominal pressure PN, valve body material and service temperature. For example: the PN16 valve body material is WCB, the service temperature is 38 degrees, and the maximum service pressure is 1.6 MPa. This is a low-pressure valve, which is th...

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Multi-stage claw dry vacuum pump

Posted on Mon, 10 Aug 2020 07:20:51 +0000

Multistage claw type dry vacuum pump of principle analysis The structure of multistage claw type dry vacuum pump plays a very important role in material consumption, volume and energy consumption. This paper introduces the newest structure –, screw the claw structure, its principle and stru...

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liquid ring vacuum pump in oil field

Posted on Mon, 10 Aug 2020 06:43:35 +0000

With the continuous development and progress of modern industrial technology, vacuum technology has gradually been widely used in a variety of production processes. Liquid ring vacuum pump has the characteristics of compact structure, simple operation and strong adaptability to the environment, s...

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Oil rotary vane vacuum pump in plastic industry

Posted on Mon, 10 Aug 2020 06:25:44 +0000

In the blister industry, the oil rotary vane vacuum pump is mainly used in the molding process of blister. The raw materials are cling to the abrasives by the suction generated by the vacuum pump, and then heated and softened to form the products. According to the thickness of materials, there ar...

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Roots blower main specifications

Posted on Mon, 10 Aug 2020 06:07:12 +0000

Roots blower has reasonable structure, high pressure rise, high efficiency, large air volume, low noise, stable operation, excellent performance, long service life, simple maintenance and other characteristics, so it is widely used in many industries. The main specifications and models of Roots b...

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Roots blower frequency conversion control method guide

Posted on Fri, 07 Aug 2020 06:53:33 +0000

Roots blower frequency control method, in order to adapt to different conditions of aeration, the use of frequency conversion motor also saves the cost of power consumption in the work! It’s a better design. As the synchronous speed is proportional to the power frequency, as long as the pow...

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How to choose vacuum pump of freeze dryer

Posted on Fri, 07 Aug 2020 06:27:09 +0000

With the continuous development of freeze dryer, it is more and more attention, its function is more and more perfect. In addition, after freeze-drying, the volume and shape of the product are basically unchanged, and the material is in the dry powder state without drying shrinkage. Laboratory ap...

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