Angle type reaction balance pressure reducing and stabilizing valve

Abstract

The present invention relates to an angle-type reaction-balanced pressure-reducing and stabilizing valve: it comprises a valve body and a valve core located inside the valve body, a valve seat is fixed on the top of the valve body, a valve seat sealing gasket is arranged below the valve seat relative to the valve core, an inlet is arranged on the side of the valve body, an outlet is arranged below the valve body, a diaphragm control chamber is arranged below the valve core inside the valve body, the valve core is located below the diaphragm control chamber, a diaphragm is fixedly connected to the lower end of the valve core, and the diaphragm is connected to a force transmission pin for pressure transmission; the force transmission pin is located outside the valve body, and the top end of the force transmission pin is connected to a spring seat. Since the outlet pressure control of this valve is not affected by the inlet pressure, the outlet pressure is not affected no matter how much the inlet pressure changes. A stable outlet pressure can be output.

Description

Technical Field

[0001] The invention relates to the field of valve devices, in particular to an angle-type reaction-balanced pressure-reducing and stabilizing valve. Background Art

[0002] Pipeline bursting due to different inlet and outlet pressures in pipelines often occurs. In the prior art, a variety of solutions have been proposed to solve this technical problem. For example, Chinese utility model patent CN206889787U discloses a pressure reducing and stabilizing valve structure, including a connector, an adapter, a water column, a piston, and a spring; the connector and the adapter are matched to form a housing in which the water column, the piston, and the spring are arranged, the upper end of the connector corresponds to the water inlet end, and the lower end of the adapter corresponds to the water outlet end; the water column is fixedly matched with the connector, and a plurality of circumferentially arranged water holes are formed in the middle and lower part of the side wall of the water column, which can adjust the pressure of the water inlet end and the water outlet end so that the pressure of the water inlet end and the water outlet end is in dynamic balance, but it still has the following disadvantages: the pressure adjustment of the dynamic adjustment structure in the prior art is unstable, and its adjustment pressure difference cannot be too large. When the pressure difference is too large, the adjustment effect cannot be achieved, and the pipeline is still in danger of bursting. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an angle-type reaction-balanced pressure-reducing and stabilizing valve to solve the defects existing in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] An angle-type reaction-balanced pressure reducing and stabilizing valve comprises a valve body and a valve core located inside the valve body, a valve seat is fixed on the top of the valve body, a valve seat sealing gasket is arranged below the valve seat relative to the valve core, an inlet is arranged on the side of the valve body, an outlet is arranged at the outlet valve cover below the valve body, a diaphragm control cavity is arranged below the valve core inside the valve body, the bottom of the valve core is located in the diaphragm control cavity, a diaphragm is fixedly connected to the lower end of the valve core, and the diaphragm is connected to a force transmission pin for pressure transmission; the force transmission pin is located outside the valve body, and the top end of the force transmission pin is connected to a spring seat;

[0006] Furthermore, the upper and lower parts of the diaphragm are respectively provided with a diaphragm pressure plate and a diaphragm pressure pad, and the diaphragm pressure plate and the diaphragm pressure pad clamp and fix the diaphragm to the lower end of the valve core;

[0007] Furthermore, a spring is provided between the spring seat and the spring pressure head at the top of the valve body, and the position of the spring pressure head is adjusted by a hexagonal nut at the top thereof, thereby adjusting the pressure on the force transmission pin;

[0008] Furthermore, an O-ring 1 is provided at the connection between the valve core and the valve body, and an O-ring 2 is provided at the connection between the valve seat and the valve body;

[0009] The beneficial effect of the present invention is that since the outlet pressure control of the valve is not affected by the inlet pressure, the outlet pressure is not affected no matter how much the inlet pressure changes, and a stable outlet pressure can be output. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention;

[0011] The following are the descriptions of the reference numerals:

[0012] 1. Outlet valve cover, 2. Diaphragm pressure pad, 3. Diaphragm, 4. Diaphragm pressure plate, 5. Valve core, 6. O-ring 1, 7. Valve body, 8. Valve seat sealing pad, 9. Force transfer pin, 10. O-ring 2, 11. Valve seat, 12. Spring seat, 13. Spring, 14. Spring pressure head, 15. Hexagonal nut; DETAILED DESCRIPTION

[0013] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0014] like Figure 1 As shown, an angle-type reaction-balanced pressure-reducing and stabilizing valve comprises a valve body 7 and a valve core 5 located inside the valve body 7, a valve seat 11 is fixed above the valve body 7, a valve seat sealing gasket 8 is arranged below the valve seat 11 relative to the valve core 5, an inlet is arranged on the side of the valve body 7, an outlet is arranged at an outlet valve cover 1 below the valve body 7, a diaphragm control chamber is arranged below the valve core 5 inside the valve body 7, the lower part of the valve core 7 is located in the diaphragm control chamber, a diaphragm 3 is fixedly connected to the lower end of the valve core 7, and the diaphragm 3 is connected to a force transmission pin 9 for pressure transmission; the force transmission pin 9 is located outside the valve body 7, and the top end of the force transmission pin 9 is connected to a spring seat 12;

[0015] More specifically, the diaphragm 3 is provided with a diaphragm pressure plate 4 and a diaphragm pressure pad 2 above and below, respectively, and the diaphragm pressure plate 4 and the diaphragm pressure pad 2 clamp and fix the diaphragm 3 to the lower end of the valve core;

[0016] More specifically, a spring 13 is provided between the spring seat 12 and the spring pressure head 14 at the top of the valve body 7. The position of the spring pressure head 14 is adjusted by a hexagonal nut 15 at the top thereof, thereby adjusting the pressure on the force transmission pin 9.

[0017] In order to improve the sealing performance of the entire pressure-stabilizing valve, an O-ring 1 6 is provided at the connection between the valve core 5 and the valve body 7, and an O-ring 2 10 is provided at the connection between the valve seat 11 and the valve body 7;

[0018] Specific working principle: This valve is mainly composed of valve body, valve core, valve seat gasket, diaphragm, spring, etc. Its main function is to reduce the high water pressure upstream so that the downstream can obtain a stable and relatively low pressure. The principle is that when we preset the outlet pressure through the nut 15, high-pressure water enters from the valve inlet and flows to the downstream diaphragm control chamber through the hollow valve core 5. When the downstream reaches the spring set pressure. The pressure forms a force through the action of the diaphragm 3, and acts on the spring 13 through the force transmission pin 9 and the spring seat 12. The spring is compressed, and the valve core 5 moves up and contacts and seals with the valve seat gasket 8 to ensure the stability of the downstream pressure. When the downstream pressure drops, the spring 12 pushes the diaphragm 3 down, driving the valve core 5 to separate from the valve seat gasket 8, and the high-pressure water flows into the diaphragm control chamber through the valve core. In this way, when the outlet pressure is low, the valve core 5 opens to release water, and closes when the pressure reaches the set value, always keeping the outlet pressure stable.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An angle type reaction balanced pressure reducing and stabilizing valve, characterized in that: It comprises a valve body and a valve core located inside the valve body, a valve seat is fixed on the top of the valve body, a valve seat sealing gasket is arranged below the valve seat relative to the valve core, an inlet is arranged on the side of the valve body, an outlet is arranged at the outlet valve cover below the valve body, a diaphragm control cavity is arranged below the valve core inside the valve body, the bottom of the valve core is located in the diaphragm control cavity, a diaphragm is fixedly connected to the lower end of the valve core, and the diaphragm is connected to a force transmission pin for pressure transmission; the force transmission pin is located outside the valve body, and the top end of the force transmission pin is connected to a spring seat; The upper and lower parts of the diaphragm are respectively provided with a diaphragm pressing plate and a diaphragm pressing pad, and the diaphragm pressing plate and the diaphragm pressing pad clamp and fix the diaphragm to the lower end of the valve core; There is a spring between the spring seat and the spring pressure head at the top of the valve body, and the position of the spring pressure head is adjusted by the hexagonal nut on the top of the spring pressure head, thereby adjusting the pressure on the force transmission pin; The spring seat, spring and spring pressure head are all arranged outside the valve body.

2. An angle-type reaction-balanced pressure reducing and stabilizing valve according to claim 1, characterized in that: An O-ring 1 is arranged at the connection between the valve core and the valve body, and an O-ring 2 is arranged at the connection between the valve seat and the valve body.

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