High-strength check valve, manufacturing process of valve body and manufacturing process of check plate

Abstract

According to the high-strength check valve, the valve body and the pipeline connector are integrally arranged, and the perfect circular plate covering the sealing boss is arranged on the valve plate, so that the valve seat is sealed when the perfect circular plate abuts against the sealing boss, the strength of the valve body of the check valve is improved, and meanwhile the sealing performance of the check valve is improved; the limiting protruding blocks distributed at the three corners can position the valve plate when the valve plate stretches out and draws back in the flow cavity, stability is improved, the whole structure enables the check valve to stretch out and draw back stably through the limiting protruding blocks and travel into a flow channel, the non-return effect is achieved through the spring, center positioning and large-flow flow guiding are achieved through the flow plate, and the stability is improved. The invention further discloses a manufacturing process of the check valve body and a manufacturing process of the check plate, the check valve manufactured through the process is high in strength, the problems that a cast check valve is prone to frost crack at the low temperature and short in service life are solved, meanwhile, compared with an original process, the cost is low, surrounding and efficiency are high, and the enterprise competitiveness is improved; and the sealing effect between the check plate and the valve body is improved, and the flow of a product is increased.

Description

technical field [0001] The invention relates to the field of valves, in particular to a manufacturing process of a high-strength check valve and a valve body and a manufacturing process of a check plate. Background technique [0002] The check valve is an automatic valve whose main function is to prevent the backflow of the medium, the reverse rotation of the pump and the driving motor, and the discharge of the container medium. The function of this type of valve is to allow the flow of the medium in only one direction and prevent flow in the opposite direction. [0003] The check valve is composed of a valve body, a check plate, a sealing ring and a spring. The most important valve body is mainly made by casting, but the valve body and the check plate have the following defects: [0004] 1. Solid waste and hazardous air pollutants that seriously pollute the environment will be generated in the production process of casting valve bodies. During casting, the air pollution so...

AI Technical Summary

Problems solved by technology

[0010] Provide an environmentally friendly check valve with high strength, good sealing performance and environmental protection, and a manufacturing process for preparing the check valve body and check plate. The check valve manufactured by this process has high strength and solves the problem of casting check valves. The low temperature of the return valve is easy to freeze and crack and the service life is low. At the same time, it has lower cost and higher efficiency than the original process, which greatly increases the competitiveness of the enterprise and improves the sealing effect between the check plate and the valve body.

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