A hydraulic control valve

Abstract

The present invention relates to a hydraulic control valve, comprising a valve body, a water sealing assembly and a switch assembly. The valve body has a main valve cavity and secondary valve cavities located on both axial sides of the main valve cavity. The water sealing assembly has a cylindrical shell that allows a water inlet to be sealed and isolated from the main valve cavity, and a water sealing baffle plate arranged on the peripheral wall of the cylindrical shell. The switch assembly comprises a switch valve, a connecting pipe, an active clip and an elastic member. The connecting pipe allows a water outlet end to be connected to the secondary valve cavity, and the switch valve controls the opening and closing of the water flow in the connecting pipe; the active clip comprises a piston portion located in the secondary valve cavity, a stop portion located in the main valve cavity, and a rod portion connecting the piston portion and the stop portion. The elastic member generates an elastic force on the active clip to push it toward the main valve cavity, so as to solve the problems of large head loss and slow opening and closing response of the existing hydraulic control valves.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to a hydraulic control valve. Background Art

[0002] A hydraulic control valve is a valve that uses the pressure of the fluid medium transmitted in the pipeline to control the action of the sealing component inside the valve to open, close or adjust the opening size of the valve by using the pressure difference of the medium. Most existing hydraulic control valves open or close the valve through the elastic deformation of the valve disc, which results in large head loss and slow opening and closing response. Summary of the invention

[0003] The present invention aims to provide a hydraulic control valve to solve the problems of large head loss and slow opening and closing response of the existing hydraulic control valves.

[0004] The specific plan is as follows:

[0005] A hydraulic control valve, comprising:

[0006] A valve body, the valve body having a main valve cavity, secondary valve cavities located on both sides of the main valve cavity in the axial direction, and a water inlet and a water outlet located on both sides of the main valve cavity in the radial direction, the two secondary valve cavities are sealed and isolated from the main valve cavity, and the water inlet and the water outlet are connected to the main valve cavity;

[0007] A water sealing assembly, the water sealing assembly is installed in the main valve cavity, and comprises a water sealing base and a plurality of water sealing baffles. The water sealing base has a cylindrical shell with one end open and the other end closed. The open end of the cylindrical shell is covered on the water inlet of the main valve cavity, and the water inlet is sealed and isolated from the main valve cavity. A plurality of hollow parts are arranged on the peripheral wall of the cylindrical shell, and a water sealing baffle is movably installed on each hollow part to match the hollow part where it is located, so that the water sealing baffle can seal and block the hollow part;

[0008] The switch assembly includes a switch valve, a connecting pipe, a movable buckle and an elastic member, the water inlet end of the connecting pipe is located at the front end of the water inlet of the main valve cavity, and the water outlet end of the connecting pipe is connected to the two valve cavities; the switch valve is fixedly installed on the connecting pipe to control the opening and closing of the water flow in the connecting pipe; an movable buckle is movably installed in each valve cavity, and the movable buckle includes a piston part located in the secondary valve cavity, a stop part located in the main valve cavity, and a rod part connecting the piston part and the stop part, the piston part can move in a sealed manner in the secondary valve cavity, and the stop part can seal and fix the water sealing baffle in the hollow part; the elastic member generates an elastic force on the movable buckle to push it toward the main valve cavity.

[0009] Furthermore, the cylindrical shell of the water sealing base is in the shape of a prism, and the inner diameter of the prism-shaped cylindrical shell decreases sequentially from the open end to the closed end. The end of the water sealing baffle close to the open end of the cylindrical shell is pivotally connected to the cylindrical shell, and the end close to the closed end of the cylindrical shell is freely placed.

[0010] Furthermore, a hollow portion is provided on each side surface of the pyramid-shaped cylindrical shell.

[0011] Furthermore, a cone is provided on the closed end of the cylindrical shell and protrudes toward the open end, and the outer diameter of the cone decreases sequentially from the closed end to the open end of the cylindrical shell.

[0012] Furthermore, the width of the water sealing baffle on the side close to the closed end of the cylindrical shell is smaller than the width on the side close to the open end of the cylindrical shell.

[0013] Furthermore, the water-sealing baffle includes a soft plate body and a hard lining component, the lining component includes an annular base matched with the edge shape of the water-sealing baffle and a plurality of lining strips arranged on the annular base, the plate body has a socket matched with the lining strip, and the lining strip is embedded in the corresponding socket of the plate body and fixed.

[0014] Furthermore, the secondary valve cavity is provided with an exhaust hole connected to the external environment, and the position where the exhaust hole is connected to the inner wall of the secondary valve cavity is located on the side of the piston part facing the bottom surface of the main valve cavity close to the main valve cavity, and is located outside the active stroke of the piston part.

[0015] The hydraulic control valve provided by the present invention has the following advantages compared with the prior art: the hydraulic control valve provided by the present invention achieves sealing only by hydraulic force, has the advantages of small head loss, large water flow, fast opening and closing response, etc., and can effectively reduce the installation of other types of valves, which is conducive to reducing the cost of engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram of a hydraulic control valve is shown.

[0017] Figure 2 A cross-sectional schematic diagram of a hydraulic control valve in one viewing direction is shown.

[0018] Figure 3 A schematic diagram of the water sealing assembly is shown.

[0019] Figure 4 A schematic diagram of a water sealing base is shown.

[0020] Figure 5 A schematic diagram of a water sealing baffle is shown.

[0021] Figure 6A top view of a hydraulic control valve is shown.

[0022] Figure 7 A schematic diagram of the movable buckle and the elastic member is shown.

[0023] Figure 8 A schematic diagram showing a hydraulic control valve in a closed state.

[0024] Fig. 9 A schematic diagram showing a hydraulic control valve in an open state is shown.

[0025] Fig.10 An exploded view of the water sealing baffle is shown.

[0026] Fig.11 A schematic cross-sectional view of the hydraulic control valve in another viewing direction is shown. DETAILED DESCRIPTION

[0027] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0029] like Figure 1-Figure 11 As shown, this embodiment provides a hydraulic control valve, including a valve body 1, a water sealing assembly 2 and a switch assembly 3.

[0030] The valve body 1 has a main valve chamber 10, secondary valve chambers 11 located on both sides of the main valve chamber 10 in the axial direction, and a water inlet 12 and a water outlet 13 located on both sides of the main valve chamber 10 in the radial direction. Both secondary valve chambers 11 are sealed and isolated from the main valve chamber 10. In this embodiment, a water inlet pipe 14 and a water outlet pipe 15 are respectively provided on both sides of the main valve chamber 10 in the radial direction. The water inlet pipe 14 is connected to the main valve chamber 10 through the water inlet 12, and the water outlet pipe 15 is connected to the main valve chamber 10 through the water outlet 13.

[0031] The water sealing assembly 2 is installed in the main valve chamber 10, and includes a water sealing base 20 and a plurality of water sealing baffles 21. The water sealing base 20 has a cylindrical shell 200 with one end open and the other end closed. The open end of the cylindrical shell 200 is covered on the water inlet 12 of the main valve chamber 10 so that the water inlet 12 is sealed and isolated from the main valve chamber 10. A plurality of hollow portions 201 are provided on the peripheral wall of the cylindrical shell 200, and a water sealing baffle 21 is movably installed on each hollow portion 201. The water sealing baffle 21 is matched with the hollow portion 201 in which it is located so that the water sealing baffle 21 can seal and block the hollow portion 201.

[0032] In this embodiment, the water sealing baffle 21 is movably installed in the hollow portion 201 in a manner that one end is pivotally connected to the cylindrical housing 200 and the other end is freely placed. Specifically, a pivot shaft 210 is respectively provided on both sides of one end of the water sealing baffle 21, and an axis hole matching the pivot shaft 210 of the water sealing baffle 21 is provided on the side wall of the hollow portion 201, so that one end of the water sealing baffle 21 is fixed in the hollow portion 201 in a pivotally connected manner, and the other end of the water sealing baffle 21 is freely placed, so that the water pressure can push open the free end of the water sealing baffle 21, and allow water to flow out of the hollow portion 201 of the water sealing base 20.

[0033] The switch assembly 3 includes a switch valve 30, a connecting pipe 31, a movable buckle 32 and an elastic member 33. The water inlet end of the connecting pipe 31 is located at the front end of the water inlet 12 of the main valve cavity 10, and the water outlet end of the connecting pipe 31 is connected to the two valve cavities 11; the switch valve 30 is fixedly installed on the connecting pipe 31 to control the opening and closing of the water flow in the connecting pipe 31. In this embodiment, a joint pipe 141 connected to the water inlet pipe is provided on the side wall of the water inlet pipe 14, and a three-way valve 142 is installed on the free end of the joint pipe 141, one outlet of the three-way valve is connected to the inlet of a three-way joint 143, and the other two outlets of the three-way joint 143 are respectively connected to the two valve cavities 11 through a connecting pipe 31.

[0034] A movable buckle 32 is movably installed in each valve cavity 11, and each movable buckle 32 includes a piston portion 320 located in the secondary valve cavity 11, a stop portion 321 located in the main valve cavity 10, and a rod portion 322 connecting the piston portion 320 and the stop portion 321. The shape of the piston portion 320 is matched with the shape of the secondary valve cavity 11, so that the piston portion 320 can move in a sealed manner in the secondary valve cavity 11; the stop portion 321 has a notch matched with the cylindrical shell 200, so that the stop portions 321 of the two movable buckles 32 are arranged facing each other to form a roughly annular gap to clamp the cylindrical shell 200, so that the stop portions 321 of the movable buckle 32 can seal and fix the water sealing baffle 21 in the hollow portion 201, so that the water sealing base 20 blocks the water inlet 12 of the main valve cavity 10.

[0035] Each sub-valve cavity 11 is also fixedly mounted with an elastic member 33, which is a spring in this embodiment. The elastic member 33 acts on the piston portion 320 of the active buckle 32 in the sub-valve cavity 11 where it is located, so that the elastic member 33 generates an elastic force on the active buckle 32 to push it toward the main valve cavity 10.

[0036] The use process of the hydraulic control valve provided in this embodiment is as follows:

[0037] When the three-way valve (i.e., the switch valve 30) is adjusted to the closed state, refer to Figure 8 Water flows from the connecting pipes 31 at both ends into the secondary valve chambers 11 at the axial ends of the main valve chamber 10. Under the combined action of the water pressure in the secondary valve chamber 11 and the elastic force of the elastic member 33, the movable buckle 32 is pushed to press the water sealing baffle 21 in the main valve chamber 10 into the hollow portion 201 of the water sealing base 20, so that the cylindrical shell 200 of the water sealing base 20 is in a closed state, thereby blocking the water inlet 12 of the main valve chamber 10, and water cannot flow into the main valve chamber 10 from the water inlet pipe 14. At this time, the hydraulic control valve is in a closed state.

[0038] When the three-way valve (i.e., the switch valve 30) is adjusted to the open state, refer to Fig. 9 , the water outlet end of the connecting pipe 141 is in a closed state, and water cannot flow from the connecting pipe 31 into the secondary valve chamber 11 at the axial ends of the main valve chamber 10. Therefore, the water pressure in the water inlet pipe 14 can overcome the elastic force of the elastic member 33, and push the water sealing baffle 21 open from the hollow portion 201 of the water sealing base 20, so that water can flow out from the hollow portion 201 of the water sealing base 20 into the main valve chamber 10, and finally flow from the water outlet 13 to the water outlet pipe 15. At this time, the hydraulic control valve is in an open state.

[0039] The hydraulic control valve provided in this embodiment achieves sealing only by hydraulic force, and has the advantages of small head loss, large water flow, fast opening and closing response, etc. It can effectively reduce the installation of other types of valves, which is beneficial to reducing the cost of engineering construction.

[0040] In this embodiment, reference Figure 4-Figure 6 The cylindrical shell 200 of the water sealing base 20 is in the shape of a prism, wherein the inner diameter of the prism-shaped cylindrical shell 200 decreases sequentially from the open end to the closed end, and a hollow portion 201 is provided on each side of the prism-shaped cylindrical shell 200. The end of the water sealing baffle 21 close to the open end of the cylindrical shell 200 is pivotally connected to the cylindrical shell 200, and the end close to the closed end of the cylindrical shell 200 is freely placed so that a smaller water pressure can push open the water sealing baffle 21.

[0041] Preferably, a cone 202 protruding toward the open end is also provided on the closed end of the cylindrical shell 200, and the outer diameter of the cone decreases sequentially from the closed end of the cylindrical shell 200 to the open end, so that the water entering the cylindrical shell 200 can better act on the free end of the water sealing baffle 21, so that a smaller water pressure can push open the water sealing baffle 21.

[0042] Another preferred embodiment is that the width of the water sealing baffle 21 close to the closed end of the cylindrical shell 200 is smaller than the width close to the open end of the cylindrical shell 200, that is, the outer shape of the water sealing baffle 21 is a roughly trapezoidal structure, and the upper bottom plate of the trapezoid faces the closed end side of the cylindrical shell 200, so that a smaller water pressure can push open the water sealing baffle 21.

[0043] In this embodiment, reference Figure 3 , Figure 5 and Fig.10The water-sealing baffle 21 includes a soft plate body 211 and a hard lining member 212. Since the cylindrical shell 200 is made of a relatively hard material such as metal or hard plastic, the plate body 211 is usually made of relatively soft rubber, silicone and other materials, so that when the movable buckle 32 presses the plate body 211, the plate body 211 and the cylindrical shell 200 can have better sealing performance by elastic deformation of the plate body. However, since the soft plate body 211 is easily deformed under the action of water pressure and leaks, etc., in this embodiment, the lining member 212 is usually made of a relatively hard material such as metal or hard plastic, and is embedded in the plate body 211, so that the water-sealing baffle 21 can have good rigidity as a whole, so as to prevent the deformation of the plate body 211 and facilitate the rotation of the water-sealing baffle 21 around the axis. Among them, the lining part 212 includes an annular base 2120 matched with the edge shape of the water-sealing baffle 21, and a plurality of lining strips 2121 are arranged on the annular base 2120. The plate body 211 has a socket 2101 matched with the lining strip 2121. The lining strip 2121 is embedded in the corresponding socket 2101 of the plate body 211 and fixed, so that the water-sealing baffle 21 can have good rigidity as a whole, and its surface in sealing contact with the cylindrical shell 200 can have a certain deformation ability to achieve a good sealing effect.

[0044] refer to Fig.11 Each time the valve cavity 11 is provided with an exhaust hole 110 connected to the external environment, the exhaust hole 110 is connected to the inner wall of the secondary valve cavity 11 on the side of the piston part 320 facing the bottom surface of the main valve cavity 10 close to the main valve cavity, and is located outside the movable stroke of the piston part 320 to prevent water leakage due to the movement of the piston part 320. The exhaust hole 110 prevents the piston part 320 from being unable to completely press the water-sealing baffle 21 due to compressed air when the piston part 320 is moving, and also prevents the water-sealing baffle 21 from being unable to push the movable buckle 32 open due to vacuum, thereby ensuring the normal operation of the hydraulic control valve.

[0045] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A hydraulic control valve, characterized in that: include: A valve body, the valve body having a main valve cavity, secondary valve cavities located on both sides of the main valve cavity in the axial direction, and a water inlet and a water outlet located on both sides of the main valve cavity in the radial direction, the two secondary valve cavities are sealed and isolated from the main valve cavity, and the water inlet and the water outlet are connected to the main valve cavity; A water sealing assembly, the water sealing assembly is installed in the main valve cavity, and comprises a water sealing base and a plurality of water sealing baffles. The water sealing base has a cylindrical shell with one end open and the other end closed. The open end of the cylindrical shell is covered on the water inlet of the main valve cavity, and the water inlet is sealed and isolated from the main valve cavity. A plurality of hollow parts are arranged on the peripheral wall of the cylindrical shell, and a water sealing baffle is movably installed on each hollow part to match the hollow part where it is located, so that the water sealing baffle can seal and block the hollow part; The switch assembly includes a switch valve, a connecting pipe, an active buckle and an elastic member, wherein the water inlet end of the connecting pipe is located at the front end of the water inlet of the main valve cavity, and the water outlet end of the connecting pipe is connected to the two valve cavities; the switch valve is fixedly installed on the connecting pipe to control the opening and closing of the water flow in the connecting pipe; an active buckle is movably installed in each valve cavity, and the active buckle includes a piston part located in the secondary valve cavity, a stop part located in the main valve cavity, and a rod part connecting the piston part and the stop part, the piston part can move in a sealed manner in the secondary valve cavity, and the stop part can seal and fix the water sealing baffle in the hollow part; the elastic member generates an elastic force on the active buckle to push it toward the main valve cavity; The cylindrical shell of the water sealing base is in the shape of a prism, and the inner diameter of the cylindrical shell of the prism decreases in sequence from the open end to the closed end. The end of the water sealing baffle close to the open end of the cylindrical shell is pivotally connected to the cylindrical shell, and the end close to the closed end of the cylindrical shell is freely placed; The water-sealing baffle includes a soft plate body and a hard lining component, the lining component includes an annular base matched with the edge shape of the water-sealing baffle and a plurality of lining strips arranged on the annular base, the plate body has a socket matched with the lining strip, and the lining strip is embedded in the corresponding socket of the plate body and fixed.

2. The hydraulic control valve according to claim 1, characterized in that: A hollow portion is provided on each side surface of the pyramid-shaped cylindrical shell.

3. The hydraulic control valve according to claim 1, characterized in that: A cone is also provided on the closed end of the cylindrical shell and protrudes toward the open end. The outer diameter of the cone decreases in sequence from the closed end to the open end of the cylindrical shell.

4. The hydraulic control valve according to claim 1, characterized in that: The width of the water sealing baffle on the side close to the closed end of the cylindrical shell is smaller than the width on the side close to the open end of the cylindrical shell.

5. The hydraulic control valve according to claim 1, characterized in that: The secondary valve cavity is provided with an exhaust hole connected to the external environment. The exhaust hole is connected to the inner wall of the secondary valve cavity at a position on the bottom surface of the piston portion facing the main valve cavity and close to the main valve cavity, and is located outside the movable stroke of the piston portion.

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