Self-suction injection pump movable sheet type check-valve

Abstract

The invention provides a self-priming ejector pump movable sheet check valve, comprising a motor, wherein the motor is connected with a pump body, the pump body comprises a water inlet and a water outlet. the check valve is characterized in that the water inlet is connected with a valve seat, a valve hole is arranged in the valve seat, the valve hole is connected with the water inlet pipe, the valve seat is provided with a round pit, the inside of the pit is provided with a rubber sheet seat, the rubber sheet seat is connected with a rubber valve sheet, and the rubber valve sheet is matched with the valve hole of the valve seat. Compared with the prior art, the self-priming ejector pump movable sheet check valve has the following advantages that: firstly, a shallow pit in the valve seat which is connected with the water inlet is provided with the rubber sheet seat, which is favorable for assembling and determining the position of the valve sheet and improving sealing performance; secondly, the sheet seat made by rubber is connected with the valve sheet, which has the advantages of good integral formation, convenient installation, no rust of rubber materials and long service life; thirdly, the rubber is elastic, thereby having reliable sealing for the valve hole fitting and stable working; fourthly, the rubber sheet seat is connected flexibly with the valve sheet, thereby having small resistance in the process of entering water, easily opening and closing and less consumption; fifthly, the self-priming ejector pump movable sheet check valve has the advantages of simple construction, labor conservation of processing, convenient installation, easy maintenance and easy replacement; sixthly, the check valve has wide adaptability; at last, the check valve also has the advantages of cost economization and low cost.

Description

Technical field [0001] The present invention involves a self -suction spray pump live tablet -type stop valve, which belongs to the field of valve. Background technique [0002] In order to meet the needs of the next running operation, the self -suction spray pump must retain sufficient amount of water (or other liquid) in the pump cavity.The stop valve is usually installed in the water inlet or water inlet of the pump.The existing self -suction shooting pump is used in the category of glass ball valves, such as Chinese patent CN2389246y. The glass ball relies on its own weight to reset it. It is only suitable for vertical installation and the glass ball valve weight is large. There are greater resistance at work at work.; The other is the spiral spring top with a valve sheet. For example, the Chinese patent CN2756870Y, the disadvantage of its existence is poor work reliability, not smooth enough, springs, etc. are easy to rust, and the service life is short.Anti -siphon device ...

AI Technical Summary

Problems solved by technology

The type of check valve used in the existing self-priming jet pump is a glass ball valve, such as Chinese patent CN2389246Y, the glass ball resets by its own weight, which is only suitable for vertical installation, and the glass ball valve is heavy and has a large resistance when working The other kind is that the helical spring bears on the valve plate, such as the Chinese patent CN2756870Y, the disadvantages of which are that the work reliability is poor, not stable enough, the springs etc. are easy to rust, and the service life is short; An anti-siphon device connecting through pipes, such as Chinese patent CN2761884Y, although this technology has no loss, it still has the disadvantages of springs, ball valves and other structures, and it is troublesome to install and process, and it is only suitable for vertical pumps

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