Three-way plug valve

Abstract

The invention relates to the field of building water supply pipeline valves. A three-way plug valve, comprising a valve body with a hole in the upper part, a rotating valve core in the valve body, the rotating valve core is generally cylindrical; a square groove is arranged on the rotating valve core, and a square groove is also arranged in the square groove The circular groove where the compression spring is placed; the compression spring supports a square sealing block, which is pressed in the square groove in the valve body, and the front end of the square sealing block forms an arc-shaped part; the back of the square groove is a channel cavity, and the flow The channel cavity is not in the shape of a round hole, and is a continuous opening over 180° open cavity. The control structure of the invention is unique, and can realize any control of the three middle holes. Compared with the prior art, the structure is compact and light, and the weight is light; the sealing structure is more reasonable, the accessories are few, the positioning and assembly are simple, the circulation cavity is large, and the safety and cost are improved. more competitive in the market.

Description

technical field [0001] The invention relates to the field of building water supply pipeline valves, in particular to single-seal three-way valves. Background technique [0002] Pipelines in the field of air conditioning and building water supply and heating are useful for single-sealed three-way valves. This type of ball valve is generally used in 1MPa medium and low pressure pipeline systems, and the circulation medium is water medium. Structures with similar functions include "An Electric Three-way Ball Valve" with the notification number CN 204704435 U, the seal of which adopts a valve ball structure, and the steering controls the cut-off control at one end or the middle end of the level. The structure of the ball valve is mature, but the body is heavy and the cost is high, especially in the field of large quantity, which occupies more non-ferrous metal resources. The "Elastic Slider Plug Valve" with the notification number CN 2718341Y has the advantages of small valve ...

AI Technical Summary

Problems solved by technology

The structure of the ball valve is mature, but the size is heavy and the cost is high, especially in the field of large quantity, which occupies more non-ferrous metal resources

The "elastic slider plug valve" with the notification number CN 2718341Y has the advantages of small valve core and moderate body shape. The overall valve core of the plug valve is put into the valve body from the upper part, and the assembly is different from that of the ball valve. The sealing parts of the plug valve in the existing technology Many, its sealing structure includes leaf spring, sealing valve block, and sealing plate inlaid on the sealing valve block; and the structure is complex, the sealing plate is pressed with raised lines on the upper and lower sides, combined with the sealing valve block, the strength and safety of the combination are not high. It can be disclosed in the patent document; in addition, the contact surface between the leaf spring and the sealing valve block is small, which may easily cause uneven force on the sealing surface and the possibility of leakage. Small, when opened at a certain angle, the flow resistance is large and there will be noise

Images