High-pressure valve plate with efficient sealing structure

Abstract

The invention relates to the technical field of valve sealing, in particular to a high-pressure valve plate with an efficient sealing structure, which comprises a valve plate main body and a connector arranged at the top of the valve plate main body, and a circulation cavity is formed in the center of the upper half part of the valve plate main body; containing and mounting cavities are symmetrically formed in the front side and the rear side of the valve plate body, sealing components are arranged in the containing and mounting cavities, sealing base plates are placed in the containing and mounting cavities, and the sealing base plates are mounted through cooperation of first connecting pieces and first positioning pieces and cooperation of second connecting pieces and second positioning pieces. The initial state of the installed sealing base plate is higher than the position of a cavity opening of the containing and installing cavity, when the valve plate is installed in a valve body for use, the sealing base plate needs to be pressed into the containing and installing cavity, and the sealing base plate is pressed into the containing and installing cavity under the pressure action of a first auxiliary spring and a second auxiliary spring. Therefore, the anti-seepage valve has a better sealing and anti-seepage effect and can be in close contact with the side wall of the inner cavity of the valve body.

Description

Technical Field

[0001] The present invention relates to the technical field of valve sealing, and in particular to a high-pressure valve plate with an efficient sealing structure. Background Art

[0002] Valves are control components in fluid conveying systems, performing functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion, or overflow pressure relief. Valves used in fluid control systems range from the simplest shutoff valve to the most complex valves used in automatic control systems. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media.

[0003] The valve plate used in the valve body is connected to the valve stem in the valve body, and the valve stem drives the valve plate to move up and down. A flow control cavity is provided in the valve plate, and the valve stem drives the valve plate to adjust its position. The flow control cavity and the internal channel opening of the valve body coincide with each other to control the fluid. Under long-term working conditions, the valve plate and the side wall of the valve body cavity will cause wear. During the regulation work, the liquid may overflow from the gap between the valve plate and the side wall of the valve body cavity, and finally cause the valve body to leak. The existing valve plate only relies on the fit between its plate body and the side wall of the valve body cavity to seal. For example, when the flow control cavity on the valve plate coincides with the internal channel opening of the valve body, the liquid may overflow outward from the connection position between the two, and the overflowed liquid has the possibility of leakage.

[0004] To this end, the present invention proposes a high-pressure valve plate with an efficient sealing structure to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a high-pressure valve plate with an efficient sealing structure to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a high-pressure valve plate with an efficient sealing structure, comprising a valve plate body and a connector disposed on the top of the valve plate body, wherein a flow cavity is disposed at the center of the upper half of the valve plate body; The front and rear sides of the valve plate body are symmetrically provided with accommodating and installing cavities, and a sealing component is provided in the accommodating and installing cavity.

[0007] Preferably, the accommodating installation cavity includes an annular installation cavity and an auxiliary installation cavity. The annular installation cavity is arranged at the side position of the circulation cavity, and the center lines of the two are on the same straight line. The annular installation cavity and the auxiliary installation cavity are connected to each other. A first installation screw groove is provided in the annular installation cavity, and a second installation screw groove is provided in the auxiliary installation cavity.

[0008] Preferably, the sealing component includes a first connecting member, a second connecting member and a sealing assembly, wherein the first connecting member includes a connecting ring body, a first mounting hole, an extension body, a first placement groove body, a first mounting screw, a first limit groove, a connecting body, a first auxiliary spring, a limit card and a first docking screw groove; the connecting ring body is adapted to be placed in the annular mounting cavity and is installed and fixed by the first mounting screw, a first mounting hole is provided in the connecting ring body, an extension body is fixedly provided on one side of the connecting ring body, a first placement groove body is provided in the extension body, and one end of the first placement groove body extends into the connecting ring body.

[0009] Preferably, the notch shape of the first placement slot body is set to be square, and the first placement slot body is extended to the notch position in the connecting ring body to be provided with a first limiting slot, a connector is inserted and placed in the first placement slot body, the connector is fixedly provided at one end of the first auxiliary spring, and a limiting card is fixedly provided at the other end of the first auxiliary spring, the limiting card is adapted to be engaged with the first limiting slot, and a first docking screw groove is provided at the other end of the connector body.

[0010] Preferably, the second connecting member includes a support disc body, a second mounting hole, a second mounting screw, a cylindrical boss, a second placement slot body, a second limiting slot, a cylindrical support body, a second auxiliary spring, a limiting chuck and a second docking screw groove; a cylindrical boss is fixedly provided at the center position of one side of the support disc body, and a second mounting hole is provided in the support disc body, the support disc body is placed in the auxiliary mounting cavity and is fixed by a second mounting screw, and a second placement slot body is provided through the cylindrical boss.

[0011] Preferably, the notch shape of the second placement slot body is set to be circular, the second placement slot body extends into the support disc body, and a second limiting groove is set at the notch position of the second placement slot body in the support disc body, a cylindrical support body is inserted and placed in the second placement slot body, one end of the cylindrical support body is fixedly connected to the second auxiliary spring, and the other end of the cylindrical support body is provided with a second docking screw groove, and the other end of the second auxiliary spring is fixedly provided with a limiting chuck, and the limiting chuck is adapted to be clamped in the second limiting slot.

[0012] Preferably, the sealing assembly includes a sealing gasket, a circular groove body is provided in the sealing gasket, the groove diameter of the circular groove body is larger than the cavity diameter of the flow cavity, and a first positioning member and a second positioning member are provided in the sealing gasket.

[0013] Preferably, the first positioning member includes a first through hole, a receiving groove, a first connecting screw and a first docking slot; the first through hole is arranged in the sealing pad and is arranged at a position close to the circular groove, the hole position at one end of the first through hole is provided with a receiving groove, and the hole position at the other end of the first through hole is provided with a first docking slot, the first docking slot is adapted to be snap-fitted with one end of the connector, and the first connecting screw passes through the first through hole and is threadedly connected to the first docking screw groove.

[0014] Preferably, the second positioning member includes a second through hole, a threaded groove body, a second connecting screw, a second docking slot and a protective structure; the second through hole is arranged in the sealing pad, and a threaded groove body is provided at the hole position at one end of the second through hole, and a second docking slot is provided at the hole position at the other end of the second through hole, the second docking slot is adapted to be snapped into place with one end of the columnar support body, and the second connecting screw passes through the second through hole and is threadedly connected to the second docking screw groove.

[0015] Preferably, the protection structure includes an external thread protection plug and a protection groove cavity; the external thread protection plug is threadedly connected to the thread groove body, and the end face of one end of the external thread protection plug is provided with a protection groove cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The high-pressure valve plate designed by the present invention includes a valve plate body and a connecting head arranged on the top of the valve plate body, and a flow cavity is arranged at the center position of the upper half of the valve plate body; wherein a accommodating and installing cavity is symmetrically arranged on the front and rear sides of the valve plate body, and a sealing component is arranged in the accommodating and installing cavity, wherein a sealing gasket is placed in the accommodating and installing cavity, and the sealing gasket is installed by the cooperation of the first connecting member and the first positioning member and the second connecting member and the second positioning member, and the initial state of the sealing gasket after installation will be higher than the cavity mouth position of the accommodating and installing cavity. When the valve plate is installed in the valve body for use, its sealing gasket needs to be pressed into the accommodating and installing cavity. Under the pressure of the first auxiliary spring and the second auxiliary spring, the sealing gasket will be in close contact with the side wall of the inner cavity of the valve body, and has a better sealing and anti-seepage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the right side of the explosion of the valve plate structure connection of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of the structural connection at center A; Figure 3 This is a schematic diagram of the left side of the explosion connection of the valve plate structure of the present invention; Figure 4 This is a schematic diagram of the connection of the valve plate main structure of the present invention; Figure 5This is a schematic diagram of the right side of the explosion of the sealing component structure connection of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the structural connection at point B in the middle; Figure 7 This is a schematic diagram of the left side of the explosion of the sealing component structure connection of the present invention; Figure 8 This is a schematic diagram of the explosion front side of the first connecting member structure of the present invention; Figure 9 This is a schematic diagram of the explosion rear side of the first connecting member structure of the present invention; Figure 10 This is a schematic diagram of the explosion front side of the second connecting member structure of the present invention; Figure 11 This is a schematic diagram of the explosion rear side of the second connecting member structure of the present invention; Figure 12 This is a schematic diagram of the front side of the sealing assembly structure connection of the present invention; Figure 13 for Figure 12 A magnified schematic diagram of the structural connection at point C in the middle; Figure 14 for Figure 12 A magnified schematic diagram of the structural connection at point D in the middle; Figure 15 This is a schematic diagram of the rear side of the sealing assembly structure of the present invention; Figure 16 for Figure 15 Enlarged schematic diagram of the structural connection at E in the middle; Figure 17 for Figure 15 Enlarged schematic diagram of the structural connection at F in the middle.

[0018] In the figure: valve plate body 1, connector 2, flow cavity 3, annular mounting cavity 41, auxiliary mounting cavity 42, first mounting screw groove 43, second mounting screw groove 44, connecting ring body 501, first mounting hole 502, extension body 503, first placement groove body 504, first mounting screw 505, first limiting groove 506, connecting body 507, first auxiliary spring 508, limiting card 509, first docking screw groove 510, support plate body 601, second mounting hole 602, second mounting screw 603, cylindrical convex Platform 604, second placement slot 605, second limiting slot 606, columnar support body 607, second auxiliary spring 608, limiting chuck 609, second docking screw groove 610, sealing pad 701, circular slot body 702, first through hole 801, accommodating slot body 802, first connecting screw 803, first docking card slot 804, second through hole 901, threaded groove body 902, second connecting screw 903, second docking card slot 904, external thread protection plug 1001, protection slot cavity 1002. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-17 A high-pressure valve plate with an efficient sealing structure includes a valve plate body 1 and a connector 2 arranged on the top of the valve plate body 1. A flow cavity 3 is provided at the center position of the upper half of the valve plate body 1; wherein accommodating and installing cavities are symmetrically provided on the front and rear sides of the valve plate body 1, and a sealing component is provided in the accommodating and installing cavity.

[0021] The accommodating installation cavity here includes an annular installation cavity 41 and an auxiliary installation cavity 42. The annular installation cavity 41 is arranged at the side position of the circulation cavity 3, and the center lines of the two are on the same straight line, and the annular installation cavity 41 and the auxiliary installation cavity 42 are connected. A first installation screw groove 43 is provided in the annular installation cavity 41, and a second installation screw groove 44 is provided in the auxiliary installation cavity 42, that is, a sealing gasket 701 is placed in the accommodating installation cavity, and the sealing gasket 701 is installed by the cooperation of the first connecting member and the first positioning member and the second connecting member and the second positioning member, and the initial state of the sealing gasket 701 after installation will be higher than the cavity mouth position of the accommodating installation cavity. When the valve plate is installed in the valve body for use, its sealing gasket 701 needs to be pressed into the accommodating installation cavity. Under the pressure of the first auxiliary spring 508 and the second auxiliary spring 608, the sealing gasket 701 will be in close contact with the side wall of the inner cavity of the valve body, and has a better sealing and anti-seepage effect.

[0022] The first and second connectors are installed and used, wherein the sealing component includes a first connector, a second connector and a sealing assembly. The connecting ring body 501 in the first connector is adapted to be placed in the annular installation cavity 41 and is installed and fixed by a first installation screw 505. A first installation hole 502 is provided in the connecting ring body 501, and an extension body 503 is fixedly provided on one side of the connecting ring body 501. A first placement groove body 504 is provided in the extension body 503, and one end of the first placement groove body 504 extends into the connecting ring body 501; the notch shape of the first placement groove body 504 is set to be square, and the first placement groove body 504 is extended to the notch position in the connecting ring body 501 and is provided with a first limiting groove 506, and the first placement groove body 504 is inserted into the notch A connector 507 is placed, and the connector 507 is fixedly set at one end of the first auxiliary spring 508. A limit card 509 is fixedly set at the other end of the first auxiliary spring 508. The limit card 509 is adapted to be engaged with the first limit groove 506, and a first docking screw groove 510 is set at the other end of the connector 507; wherein the connector 507 is first inserted into the first placement groove 504 in the extension body 503, and the limit card 509 is stuck in the first limit groove 506 on the connecting ring body 501, and then the connecting ring body 501 is placed in the annular mounting cavity 41, and the first mounting hole 502 on the connecting ring body 501 is aligned with the first mounting screw groove 43 in the annular mounting cavity 41, and then the first mounting screw 505 is used to install and fix it.

[0023] Similarly, the cylindrical support body 607 is inserted into the second placement groove body 605 placed in the cylindrical boss 604, and the limiting chuck 609 is clamped in the second limiting groove 606 on the support disc body 601, and then the support disc body 601 is placed in the auxiliary installation cavity 42, and the second mounting hole 602 on the support disc body 601 is aligned with the second mounting screw groove 44 in the auxiliary installation cavity 42, and then installed using the second mounting screw 603, wherein the central position of one side of the support disc body 601 in the second connecting member is fixedly provided with a cylindrical boss 604, and the support disc body 601 is provided with a second mounting hole 602, the support disc body 601 is placed in the auxiliary installation cavity 42, and through the second mounting screw 603, it is installed. It is fixed with screws 603, and a second placement slot 605 is provided through the cylindrical boss 604; the slot shape of the second placement slot 605 is set to be circular, and the second placement slot 605 extends into the support disk body 601, and a second limiting slot 606 is provided at the slot position of the second placement slot 605 in the support disk body 601, and a cylindrical support body 607 is inserted and placed in the second placement slot body 605, and one end of the cylindrical support body 607 is fixedly connected to the second auxiliary spring 608, and the other end of the cylindrical support body 607 is provided with a second docking screw groove 610, and the other end of the second auxiliary spring 608 is fixedly provided with a limiting chuck 609, and the limiting chuck 609 is adapted to be clamped with the second limiting slot 606.

[0024] In order to improve the sealing performance of the valve plate body 1, the present invention provides a receiving and installing cavity on both sides thereof, that is, a sealing assembly is installed in the receiving and installing cavity, wherein the sealing assembly includes a sealing gasket 701, a circular groove body 702 is provided in the sealing gasket 701, the groove diameter of the circular groove body 702 is larger than the cavity diameter of the flow cavity 3, and a first positioning member and a second positioning member are provided in the sealing gasket 701, that is, when installing the sealing gasket 701, the sealing gasket 701 is directly placed in the receiving and installing cavity, and the side wall of the sealing gasket 701 is adapted to contact and fit with the inner side wall of the receiving and installing cavity. At the same time, the first docking groove 804 provided on one side of the sealing gasket 701 is clamped with the end of the connector 507 in the first connecting member, and then the first connecting screw 803 is used for connection, and the second docking groove 904 provided is clamped with the end of the columnar support body 607 in the second connecting member, and then the second connecting screw 903 is used for connection, which is good for sealing. The installation of the gasket 701 can be completed, wherein the first through hole 801 in the first positioning member is set in the sealing gasket 701 and is set at a position close to the circular groove body 702. The hole position of one end of the first through hole 801 is provided with a accommodating groove body 802, and the hole position of the other end of the first through hole 801 is provided with a first docking card groove 804. The first docking card groove 804 is adapted to be clamped with one end of the connecting body 507, and the first connecting screw 803 passes through the first through hole 801 and is threadedly connected to the first docking screw groove 510; the second through hole 901 in the second positioning member is set in the sealing gasket 701, and the hole position of one end of the second through hole 901 is provided with a threaded groove body 902, and the hole position of the other end of the second through hole 901 is provided with a second docking card groove 904. The second docking card groove 904 is adapted to be clamped with one end of the columnar support body 607, and the second connecting screw 903 passes through the second through hole 901 and is threadedly connected to the second docking screw groove 610.

[0025] The initial state of the installed sealing gasket 701 will be higher than the cavity mouth position of the accommodating installation cavity. When the valve plate is installed in the valve body for use, the sealing gasket 701 needs to be pressed into the accommodating installation cavity. Under the pressure of the first auxiliary spring 508 and the second auxiliary spring 608, the sealing gasket 701 will be in close contact with the side wall of the valve body cavity, and has a better sealing and anti-seepage effect. That is, when the sealing gasket 701 is pressed into the accommodating installation cavity, the first auxiliary spring 508 and the second auxiliary spring 608 are squeezed, and both are in a compressed state, so that the sealing gasket 701 will be in close contact with the side wall of the valve body cavity, avoiding the generation of gaps, and then causing the problem of liquid leakage.

[0026] When the flow cavity 3 on the valve plate body 1 coincides with the opening of the liquid flow channel in the valve body cavity, the upper half of the sealing pad 701 performs auxiliary sealing on the side of the flow cavity 3; when the valve plate body 1 is required to block the opening of the liquid flow channel, the sealing pad 701 arranged on the lower half of the valve plate body 1 blocks the opening of the liquid flow channel. Moreover, when blocking, in order to prevent the liquid from invading the second connecting screw 903 installed in the threaded groove body 902 on the sealing pad 701, the sealing pad 701 is provided on the bottom half of the valve plate body 1. Corrosion, the present invention is provided with a corresponding protection structure, which includes an external thread protection plug 1001 and a protection groove cavity 1002; the external thread protection plug 1001 is threadedly connected to the thread groove body 902, and the end face of one end of the external thread protection plug 1001 is provided with a protection groove cavity 1002, that is, the external thread protection plug 1001 is threadedly connected in the thread groove body 902, and the end face of the external thread protection plug 1001 after connection is kept flush with the plate surface of the sealing gasket 701 to avoid affecting the working operation of the sealing gasket 701.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure valve plate with an efficient sealing structure, comprising a valve plate body (1) and a connector (2) arranged on the top of the valve plate body (1), wherein a flow cavity (3) is arranged at the center of the upper half of the valve plate body (1); Its characteristics are: The valve plate body (1) is symmetrically provided with accommodating and installing cavities on both the front and rear sides, and a sealing component is provided in the accommodating and installing cavity.

2. The high-pressure valve plate with an efficient sealing structure according to claim 1, characterized in that: The accommodating installation cavity comprises an annular installation cavity (41) and an auxiliary installation cavity (42); the annular installation cavity (41) is arranged at a side position of the circulation cavity (3), and the center lines of the two are on the same straight line, and the annular installation cavity (41) and the auxiliary installation cavity (42) are connected to each other; a first installation screw groove (43) is provided in the annular installation cavity (41), and a second installation screw groove (44) is provided in the auxiliary installation cavity (42).

3. The high-pressure valve plate with an efficient sealing structure according to claim 1, characterized in that: The sealing component includes a first connecting member, a second connecting member and a sealing assembly, wherein the first connecting member includes a connecting ring body (501), a first mounting hole (502), an extension body (503), a first placement groove body (504), a first mounting screw (505), a first limiting groove (506), a connecting body (507), a first auxiliary spring (508), a limiting card (509) and a first docking screw groove (510); the connecting ring body (501) is adapted to be placed in the annular mounting cavity (41) and is installed and fixed by the first mounting screw (505), the connecting ring body (501) is provided with a first mounting hole (502), an extension body (503) is fixedly provided on one side of the connecting ring body (501), the extension body (503) is provided with a first placement groove body (504), and one end of the first placement groove body (504) extends into the connecting ring body (501).

4. The high-pressure valve plate with an efficient sealing structure according to claim 3, characterized in that: The notch shape of the first placement slot (504) is set to be square, and the first placement slot (504) is extended to the notch position in the connecting ring (501) to be provided with a first limiting slot (506), a connector (507) is inserted and placed in the first placement slot (504), the connector (507) is fixedly provided at one end of the first auxiliary spring (508), and a limiting card (509) is fixedly provided at the other end of the first auxiliary spring (508), the limiting card (509) is adapted to be snap-fitted with the first limiting slot (506), and the other end of the connector (507) is provided with a first docking screw groove (510).

5. The high-pressure valve plate with an efficient sealing structure according to claim 3, characterized in that: The second connecting member comprises a support disc (601), a second mounting hole (602), a second mounting screw (603), a cylindrical boss (604), a second placement slot (605), a second limiting slot (606), a cylindrical support body (607), a second auxiliary spring (608), a limiting chuck (609) and a second docking screw groove (610); a cylindrical boss (604) is fixedly provided at the center position of one side of the support disc (601), and a second mounting hole (602) is provided in the support disc (601); the support disc (601) is placed in the auxiliary mounting cavity (42) and fixed by the second mounting screw (603), and the second placement slot (605) is provided through the cylindrical boss (604).

6. The high-pressure valve plate with an efficient sealing structure according to claim 5, characterized in that: The notch shape of the second placement groove body (605) is set to be circular, the second placement groove body (605) extends into the support disc body (601), and a second limiting groove (606) is set at the notch position of the second placement groove body (605) in the support disc body (601), a columnar support body (607) is inserted and placed in the second placement groove body (605), one end of the columnar support body (607) is fixedly connected to the second auxiliary spring (608), and the other end of the columnar support body (607) is provided with a second docking screw groove (610), and the other end of the second auxiliary spring (608) is fixedly provided with a limiting chuck (609), and the limiting chuck (609) is adapted to be clamped with the second limiting groove (606).

7. The high-pressure valve plate with an efficient sealing structure according to claim 3, characterized in that: The sealing assembly comprises a sealing pad (701), a circular groove (702) is provided in the sealing pad (701), the groove opening diameter of the circular groove (702) is larger than the cavity opening diameter of the circulation cavity (3), and a first positioning member and a second positioning member are provided in the sealing pad (701).

8. The high-pressure valve plate with an efficient sealing structure according to claim 7, characterized in that: The first positioning member includes a first through hole (801), a receiving groove body (802), a first connecting screw (803) and a first docking card slot (804); the first through hole (801) is arranged in the sealing pad (701) and is arranged at a position close to the circular groove body (702), the hole position of one end of the first through hole (801) is provided with a receiving groove body (802), and the hole position of the other end of the first through hole (801) is provided with a first docking card slot (804), the first docking card slot (804) is adapted to be snap-fitted with one end of the connector (507), and the first connecting screw (803) passes through the first through hole (801) and is threadedly connected to the first docking screw slot (510).

9. The high-pressure valve plate with an efficient sealing structure according to claim 7, characterized in that: The second positioning member includes a second through hole (901), a threaded groove body (902), a second connecting screw (903), a second docking slot (904) and a protective structure; the second through hole (901) is arranged in the sealing pad (701), and a threaded groove body (902) is provided at the hole position of one end of the second through hole (901), and a second docking slot (904) is provided at the hole position of the other end of the second through hole (901), the second docking slot (904) is adapted to be snap-fitted with one end of the columnar support body (607), and the second connecting screw (903) passes through the second through hole (901) and is threadedly connected to the second docking screw groove (610).

10. The high-pressure valve plate with an efficient sealing structure according to claim 9, characterized in that: The protective structure comprises an external thread protective plug (1001) and a protective groove cavity (1002); the external thread protective plug (1001) is threadably connected to the thread groove body (902), and the end surface of one end of the external thread protective plug (1001) is provided with a protective groove cavity (1002).

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