Safety valve for a hydraulic support
A hydraulic support and safety valve technology, which is applied to mine roof supports, struts/supports, fluid pressure actuating devices, etc., can solve the problem of inconvenient replacement of compression springs for safety valves, and achieve improved convenience, simple and stable structure, Easy-to-use effects
Active Publication Date: 2022-04-29
乐清市东风煤矿设备有限公司
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Problems solved by technology
[0004] In view of the related technologies mentioned above, the inventor believes that there is a defect that it is not convenient to replace the compression spring of the safety valve when the hydraulic system is working.
Method used
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Embodiment Construction
[0037] The following is attached Figure 1-5 The application is described in further detail.
[0038] The embodiment of the present application discloses a safety valve of a hydraulic support. refer to figure 1 and figure 2 , the safety valve includes a valve casing 1, the valve casing 1 is arranged in a hollow cylindrical shape, and both ends of the valve casing 1 are open. A joint 2 is installed at one end of the valve housing 1, and the joint 2 communicates with the inside of the valve housing 1, and the joint 2 is used for connecting with a hydraulic pipeline. The valve core 3 is sleeved on the end close to the joint 2 in the valve housing 1, and the valve core 3 is slidingly connected with the valve housing 1, and one end of the valve core 3 is in contact with the joint 2, and the valve core 3 is provided with a first unloading valve. hole 31, the joint 2 communicates with the first unloading hole 31, the side wall of the valve housing 1 is provided with a second unl...
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This application relates to a safety valve for a hydraulic support, which includes a valve casing, a joint arranged at one end of the valve casing, a valve core slidingly connected inside the valve casing, a spring seat fixed at the end of the valve core away from the joint, The pressure regulating screw located in the housing and at the end of the valve housing away from the joint and the compression spring arranged between the pressure regulating screw and the spring seat; the joint communicates with the inside of the valve housing, and the compression spring squeezes the valve toward the joint side core, so that the valve core is closely attached to the connection between the joint and the valve housing; the valve core is provided with a first unloading hole, the joint is connected with the first unloading hole, and the valve housing is provided with a The second unloading hole is located on the side of the first unloading hole away from the joint; the valve casing is also provided with a locking mechanism for fixing the position of the spring seat. The application has the effect of facilitating workers to replace the compression spring of the safety valve when the hydraulic system is in operation.
Description
technical field [0001] The present application relates to the field of safety valves in hydraulic systems, in particular to a safety valve of a hydraulic support. Background technique [0002] The hydraulic support is a structure used to control the mine pressure of the coal mining face. The hydraulic system is an important part of the hydraulic support. The safety valve is used to protect the hydraulic cylinder and unload the excess load in time to prolong the service life of the hydraulic support. [0003] At present, after the compression spring in the safety valve is under pressure for a long time, its elasticity will decrease with the increase of time, and the compression spring will have insufficient elasticity so that the valve core cannot be reset. It is necessary to periodically adjust the compression through the pressure adjustment screw. The pressure of the spring, but eventually the compression spring needs to be replaced to ensure the normal use of the safety va...
Claims
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IPC IPC(8): F15B13/02E21D23/16E21D15/51
CPCF15B13/024E21D23/16E21D15/512
Inventor 陈定余陈永乐李学州唐大春
Owner 乐清市东风煤矿设备有限公司