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Self-reset leak-proof air ejection system

An automatic reset, leak-proof technology, applied in jet pumps, machines/engines, non-displacement pumps, etc., can solve the problems of limited application range, short service life, slow suction speed, etc., and achieve long service life and basic structure. Simple, well-structured effect

Active Publication Date: 2010-02-24
西安航天泵业有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose an automatic reset leak-proof air injection system that can be used as a vacuum pumping device for a common centrifugal pump, which solves the problems of slow suction speed, large size, poor reliability and long service life of the existing common centrifugal pump vacuum pumping device. Short, limited application range and other technical problems

Method used

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  • Self-reset leak-proof air ejection system

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Embodiment Construction

[0021] The structure of the present invention before vacuumizing is referring to figure 1 , an automatic reset leak-proof air injection system, including an air intake pipe 1 that can pass through compressed gas, an exhaust pipe 4 that communicates with the outside world, a hollow substrate 3 that is connected between the air intake pipe 1 and the exhaust pipe 4, and is arranged on the substrate 3, the negative pressure device and automatic reset device and the air-inducing device arranged under the base 3; wherein: the negative pressure device includes the nozzle 2 arranged in the base near the end of the intake pipe 1, and the nozzle 2 arranged in the base 3 near the exhaust pipe 4 The diffuser 6 at one end, the pressure chamber 12 arranged between the nozzle 2 and the inlet pipe 1, the inlet pipe 1, the pressure chamber 12, the nozzle 2, the diffuser 6 and the exhaust pipe 4 are sequentially connected to form the injection gas channel The inner diameter of the nozzle pipe 2...

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Abstract

The invention relates to an automatic reset leak-protection air injection system which is capable of settling the technical problems that the pumping speed of the vacuumizing devices of existing common centrifugal pumps is very slow, the size is big, the reliability is poor, the service life is short, the application scope is limited, etc. The system comprises an air inlet pipe through which the compressed air can pass, an exhaust pipe communicating with the exterior environment, a hollow basal body arranged between the air inlet pipe and the exhaust pipe, a negative-pressure device and an automatic reset device arranged inside the basal body and as well as an air inducting device. The utility model has the advantages of small overall radial size, broad application scope of the automatic reset leak-protection air injection system, high reliability, long service life, user-friendly installation and maintenance, etc.

Description

technical field [0001] The invention relates to a vacuum pumping device, in particular to a vacuum pumping device for drawing water from a low place through a pump inlet pipe. Background technique [0002] Existing vacuum devices are usually used in the working condition that the pump inlet pipe is higher than the pumped liquid, which requires the use of a self-priming centrifugal pump for vacuuming or an ordinary centrifugal pump plus other forms of vacuuming devices using the return hole structure. Self-priming centrifugal pumps consider the requirements of vacuuming, and must have fixed or movable return holes in the design; the fixed return holes will increase the return loss in the pump when the pump is working normally, and the pump efficiency will decrease by 3% to 5%. ; Due to the increase of mechanical devices in the movable return hole, not only the manufacturing cost is increased, the production process is more complicated, but also the failure points of the pump ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04F5/20F04F5/24
Inventor 赵卫忠韩卫钊朱保民吕秋洁吴晓磊席建厂马玉琴
Owner 西安航天泵业有限公司
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