A mine reversing valve
A reversing valve, mine-used technology, applied in the direction of valve details, valve device, valve operation/release device, etc., can solve the problems of inconvenient operation and large effort
Active Publication Date: 2020-10-27
ZHEJIANG DONGXING MINING EQUIP
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- Abstract
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Problems solved by technology
[0004] This reversing valve is the same as the common reversing valve. When reversing is required, the handle is moved by pulling the handle, and then the cam is rotated by turning the handle, and finally the valve is opened and closed. Among them, the spring structure is used to realize that one end of the handle is in contact with the valve body, so that the handle and the body are relatively stable, but this structure requires a large elastic support, and the operator needs to spend a lot of money when turning the handle. The strength caused by the operation is inconvenient and needs to be improved
Method used
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[0029] The present invention will be further described with reference to the accompanying drawings.
[0030] This embodiment discloses a mine reversing valve, such as figure 1 As shown, it includes a body 1, on which an operating rod 2 is hinged, and a cam is arranged in the body 1, and the cam and the operating rod 2 are relatively fixed. When the operating rod 2 is located directly above the body 1, the Both the left and right channels are closed, that is, the liquid inlet is closed; when the operating lever 2 is turned to the left, the left channel is conducted, and the liquid on the left can pass through the liquid inlet; when the operating lever 2 is turned to the right, the right channel is guided Through, the liquid on the right can pass through the liquid inlet.
[0031] Such as figure 1 As shown, two extension blocks 3 are integrally formed on one side of the operating rod 2, and hinge holes 4 are opened on the two extension blocks 3, and a hinged rod 5 is also arra...
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The invention discloses a mining reversing valve, and relates to the technical field of mining valves. According to the technical scheme, the mining reversing valve is characterized by comprising a body, an operation rod is hinged to the body, a cam is arranged in the body, the operation rod and the cam are relatively fixed, an extension block is integrally generated on the operation rod, a hingehole is formed in the extension block, the mining reversing valve further comprises a hinge rod, a hinge shaft inserted into the hinge hole is fixedly arranged on the hinge rod, and therefore relativerotation of the extension block and the hinge rod is achieved. A limiting groove is formed in the body, an inserting block inserted into the limiting groove is fixed to one end of the hinge rod, a stress part is arranged at the other end of the hinge rod, a spring located between the hinge shaft and the inserting block is arranged between the operation rod and the hinge rod, the spring applies force close to the body to the end, provided with the inserting block, of the hinge rod, and the distance from the stress part to the axial line of the hinge shaft is larger than the distance from the spring to the axial line of the hinge shaft. The mining reversing valve has the effects of lowering operation difficulty and saving labor.
Description
technical field [0001] The invention relates to the technical field of a mine valve body, more specifically, it relates to a mine reversing valve. Background technique [0002] At present, the reversing valve is widely used in the field of coal mine hydraulic support as an important control device to ensure the movement of the hydraulic support. However, with the development of high-yield and high-efficiency fully mechanized mining technology, the hydraulic support is becoming larger and larger, and its performance index has reached more than 400L / min. (At present, the maximum in China is 400L / min). The reversing valve is one of the important hydraulic components of the hydraulic support. Its performance will directly affect the support performance of the hydraulic support. Therefore, it is required that the large flow reversing valve must ensure reliable sealing. and operational performance. [0003] In the prior art, a Chinese patent document with the authorized announcem...
Claims
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IPC IPC(8): F15B13/02F16K31/60
CPCF15B13/021F16K31/602
Inventor 倪海哨
Owner ZHEJIANG DONGXING MINING EQUIP