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Claw-type dry vacuum pump

A dry vacuum pump, claw technology, used in pumps, machines/engines, mechanical equipment, etc.

Inactive Publication Date: 2014-03-19
ZIBO NINGSEN VACUUM EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first stage of traditional multi-stage pumps has a large exhaust volume. If the exhaust gas can be reduced in the first stage, it can reduce power consumption and prolong the service life of the pump. However, ordinary check valves are normally closed and spring pressure On the valve plate, the one-way valve will only open when it is under high pressure. If the pump exhausts at 2900 rpm, frequent closing will inevitably wear the valve plate, and eventually cause the one-way valve to fail

Method used

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  • Claw-type dry vacuum pump
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Embodiment Construction

[0018] A claw-type dry vacuum pump of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] A claw-type dry vacuum pump of the present invention is composed of a housing 1, a shaft 2, a rotor 3, an air inlet 4, a spring 5, a valve plate 6, an atmospheric connection port 7, and an exhaust port 8; the shaft 2 and the rotor 3 are located at Inside the housing 1, the air inlet 4 and the exhaust port 8 are located on one side of the housing 1, the air inlet 4 is located at the lower end of the housing 1, the normally open check valve is composed of a spring 5 and a valve plate 6, and the atmospheric connection port 7 passes through The normally open check valve is connected with the exhaust port 8.

[0020] The innovation of the claw-type dry vacuum pump of the present invention is that the air inlet 4 (high vacuum end) is below, forming a unique style.

[0021] 1. Long life cycle: In conventional claw pumps, the rotor 3 is s...

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Abstract

The invention relates to a claw-type dry vacuum pump belonging to the technical field of processing of the vacuum pump. The claw-type dry vacuum pump consists of a shell, a shaft, a rotor, an air inlet, a spring, a valve piece, an atmosphere connecting port and an exhausting port, wherein the shaft and the rotor are positioned in the shell; the air inlet and the exhausting port are positioned on one side of the shell; a normally-open type one-way valve consists of the spring and the valve piece; the atmosphere connecting port is connected with the exhausting port by the normally-open type one-way valve. The claw-type dry vacuum pump provided by the invention has the advantages that the high-efficiency and energy-saving effects are achieved, the operation is reliable, the cost is low, the service life is long, the practicability is strong and the market prospect is good.

Description

Technical field: [0001] The invention relates to a claw-type dry vacuum pump, which belongs to the technical field of vacuum pump processing. Background technique: [0002] At present, the claw pump is a common dry vacuum pump. The claw pump can be a primary pump, a secondary pump, a tertiary pump, and a quaternary pump according to the requirements of the vacuum. It is practical, economical, and cost-effective. Take the four-stage pump as an example: the first stage has a large gas capacity, which is called the high vacuum end, and the last stage is directly exhausted into the atmosphere, which is called the low vacuum end. In vertical vacuum pumps, the first-stage exhaust ends of all pumps are at the upper end. In conventional claw pumps, the rotor is suspended in the pump chamber. Due to the intake and exhaust passages and other reasons, the rotor is in the pump chamber, and the gap distribution is uneven. The gap between the air intake surface and the exhaust surface i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C25/02
Inventor 侯宁
Owner ZIBO NINGSEN VACUUM EQUIP TECH