Processing technology of a noise-absorbing ball valve and valve ball

Abstract

The invention relates to the field of building water supply and drainage pipelines, in particular to a processing technology for a sound-absorbing ball valve and a valve ball. A sound-absorbing ball valve, comprising a valve ball, with flow guide ribs formed in the inner hole of the valve ball, the included angle between the flow guide ribs and the center line of the valve ball is 3° to 50°, the valve ball is made of metal, and the flow guide ribs are flexible Non-metallic material, the diversion rib is bonded to the inner hole of the valve ball. The processing technology of the silencer valve ball adopts four processing steps to complete. The invention improves the processing technology of the current diversion rib on the existing valve ball, and provides a valve ball with a new diversion rib structure. The diversion rib is bonded to the inner hole of the valve ball through an extrusion process, and the flexible non-metallic material has better performance. It has the effect of corrosion resistance and reducing circulation noise, and the improvement of the process reduces the difficulty and cost of production, which is competitive in the market.

Description

Technical field [0001] The present invention relates to the field of building water supply pipelines, and in particular to a ball valve and a machining process thereof. Background technique [0002] Liquid pipe media delivery, air in the liquid, and the liquid in the flow process, the flow rate change, the impact pipe wall, can generate pipe noise, in the shaft, or the pipe segment large in the shaft, the pipe noise is more pronounced. In situations where pipeline noise is sensitive, such as laboratory, library, bedroom, etc., ordinary valve balls cannot achieve noise reduction. [0003] The prior art ball valve is as a "a ball valve with spiral sounding function of the ball", the ball valve is provided, and the fluid medium flows through the fluid medium, it will be inadvertent. The fluid medium collided with each other, generates the flow direction of the spiral, which also causes a certain separation between the air and the fluid medium, reducing the collision between the flui...

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Problems solved by technology

[0004] The prior art of the above-mentioned patent is from paragraph 18 of the description and the accompanying drawings and appended image 3 It can be seen from the above that the valve ball and the guide rib on the inner wall of the valve ball are an integral structure, and the material of the guide rib is the same as that of the valve ball. In the actual implementation process, it is found that the yield of the valve ball is low and the manufacturing cost is high.

The reasons are as follows: 1. Only when the surface roughness of the valve ball reaches below 0.1 can the sealing effect with the sealing ring be better realized, and if it is too rough, the wear of the sealing ring will be accelerated. The clamping and processing accuracy have a great influence, which is not conducive to the sealing of the ball valve; it is difficult to process the diversion rib on the ball valve, the equipment requirements are high, the process is cumbersome, and the cost is high; 3. The diversion rib is formed by pouring, and the surface is rough, which is not conducive to the formation of diversion

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