A hydraulic check valve that can reduce opening pressure
A technology for opening pressure and one-way valve, applied in the field of hydraulic one-way valve, can solve problems such as increasing cost, and achieve the effect of reducing opening pressure, eliminating potential safety hazards and reducing cost
Active Publication Date: 2018-01-02
SURELAND IND FIRE SAFETY
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Problems solved by technology
[0002] For a general hydraulic valve, when the water pressure reaches the set pressure, the water flow will open the valve core and compress the return spring at the same time. This structure makes the water flow have to lose 20% to 30% of the pressure to keep the return spring in compression. state and open the spool, thereby increasing the cost
Method used
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Embodiment
[0018] Example: see figure 1 , figure 2 According to an embodiment of the present invention, a hydraulic one-way valve that can reduce the cracking pressure includes a valve body 1, and the valve body 1 includes a water inlet 9 and a water outlet 10, and the valve body 1 is located at the water inlet A spool 2 is installed between the 9 and the water outlet 10, and a return spring 5 is installed between the spool 2 and the water outlet 10, and the spool 2 can be connected to the valve body 1 under the action of the return spring 5 The water inlet 9 forms a seal, and at least one stop rod 3 is installed in the valve body 1, and a stop rod spring 6 is installed between the described stop rod 3 and the valve body 1, and the outside of the valve body 1 is connected with The valve cover 4 forms a seal at the joint, and the outer peripheral surfaces of the larger diameter and the smaller diameter of the stop rod 3 form a sliding seal with the matching inner peripheral surface of ...
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The invention belongs to the field of hydraulic control, and especially relates to a hydraulic one-way valve capable of reducing an opening pressure. For an ordinary hydraulic valve, the water flow must lose 20-30% of pressure to keep a reset spring in a compression state and open a valve core, so the cost is increased. The technical scheme of the invention is as follows: the hydraulic one-way valve comprises a valve body, the valve body comprises a water inlet and a water outlet, a valve core is installed between the water inlet and the water outlet, a reset spring is arranged between the valve core and the water outlet, a stop lever is at least installed in the valve body, a stop lever spring is installed between the stop lever and the valve body, the outer side of the valve body is connected with a valve cover, and the junction is sealed, outer circumferential surfaces with a larger diameter and a smaller diameter of the stop lever form slide seal with matched inner circumferential surfaces in the valve body; when the valve core moves downward to a certain position, the stop lever can move toward the direction of the valve core, so the valve core cannot reset upward, thereby guaranteeing that the hydraulic one-way valve is normally opened and is not reset.
Description
technical field [0001] The invention belongs to the field of hydraulic control, in particular to a hydraulic one-way valve capable of reducing opening pressure. Background technique [0002] For a general hydraulic valve, when the water pressure reaches the set pressure, the water flow will open the valve core and compress the return spring at the same time. This structure makes the water flow have to lose 20% to 30% of the pressure to keep the return spring in compression. State and make the spool open, thus increasing the cost. Contents of the invention [0003] In order to solve the above problems, the present invention provides a hydraulic one-way valve that can reduce the cracking pressure, and the invention can reduce the pressure when the hydraulic one-way valve is opened. [0004] The technical solution of the present invention to achieve the above object is: a hydraulic one-way valve that can reduce the opening pressure, including a valve body 1, the valve body 1...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/027
Inventor 刘雄心
Owner SURELAND IND FIRE SAFETY