A three-way reversing valve and its sealing method
A three-way reversing valve and sealing groove technology, applied in the field of valves and sealing, can solve the problems of damage to the sealing ring, internal leakage of the valve, economic loss, etc., and achieve the effect of reducing operating costs, good sealing performance and long service life
Active Publication Date: 2018-04-20
CHANGZHENG ENG +1
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Problems solved by technology
However, since the sealing rings at the inlet and outlet are all arranged on the valve core 12, during the reversing process of the valve core 12, the valve core 12 rotates, and the sealing rings will be damaged by the impact of high-speed moving coal particles, resulting in internal valve damage. Leakage, or even cause the entire system to stop, resulting in serious economic losses
Method used
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Embodiment Construction
[0026] In order to better illustrate the intention of the present invention, the content of the present invention will be further described below in conjunction with the accompanying drawings.
[0027] refer to figure 1 , figure 1 A three-way reversing valve is provided, which includes an upper cover 3, a lower cover 4, a valve body 1 and a valve core 2, wherein the upper cover 3 and the lower cover 4 are both disc-shaped, and the valve body 1 is a ring structure, The valve body 1 is fixedly connected between the upper cover 3 and the lower cover 4. The diameter of the outer edge of the valve body 1 is the same as that of the upper cover 3 and the lower cover 4. Specifically, bolts are arranged on the annular wall of the valve body 1. hole, the upper cover 3 and the lower cover 4 are connected to the valve body 1 by bolts; the valve core 2 is enclosed in the space formed by the valve body 1, the upper cover 3 and the lower cover 4 and can rotate in the valve body 1, In add...
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The invention provides a three-way reversing valve which comprises an upper cover, a lower cover, a valve body and a valve element. The valve body is fixedly connected between the upper cover and the lower cover. The valve element is surrounded by the space formed by the valve body, the upper cover and the lower cover and can rotate inside the valve body. The valve body is provided with an inlet, a first outlet and a second outlet. Two parallel valve element channels are arranged inside the valve element. An inlet sealing groove and an outlet sealing groove are arranged in the inner wall of the valve body. The inlet sealing groove and the outlet sealing groove are provided with an inlet sealing ring and an outlet sealing ring respectively. The three-way reversing valve is good in sealing performance, long in service life and capable of greatly reducing the system maintenance cost and lowering the running cost.
Description
technical field [0001] The invention relates to a valve and a sealing method, in particular to a high-tightness three-way reversing valve and a sealing method thereof. Background technique [0002] The three-way reversing valve commonly used in the pulverized coal system of the coal chemical industry uses high-pressure nitrogen as the carrier and solid pulverized coal particles with a certain hardness. Since the nitrogen pressure is as high as 4.0Mpa or more, it is required to use it during use. High sealing level and good sealing performance. At present, whether it is imported or domestic three-way reversing valve, most of them adopt the sealing structure of setting the sealing ring on the valve core. Figure 6 as shown, Figure 6 It is a three-way reversing valve commonly used in the prior art. It includes a valve body 11 and a valve core 12. The valve core 12 is provided with a valve core passage, and two inlet sealing grooves 201 are respectively provided at the inlet an...
Claims
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IPC IPC(8): F16K27/06F16K5/18F16K11/085
CPCF16K5/18F16K11/085F16K27/06
Inventor 汪欢周岩盖玉龙颜震任金天
Owner CHANGZHENG ENG