A valve core structure

Abstract

The utility model relates to a valve core structure, include: sphere;Valve seat, valve body, the valve seat with the valve body between form first chamber, second chamber;First air inlet, first air inlet with first chamber intercommunication;Second air inlet, second air inlet with second chamber intercommunication, when through second air inlet injects gas to second chamber, the gas in second chamber pushes the valve seat and moves forward, when through first air inlet injects gas to first chamber, the gas in first chamber pushes the valve seat and moves back. Compared with the valve core structure in the prior art, the assembly and disassembly of the valve core structure in the application do not need special tool operation, and the management and maintenance of special tools are saved, so that the installation cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically to a valve core structure. Background Technology

[0002] As the name suggests, a top-entry ball valve refers to a valve whose cover and internal components (such as the ball, seat, and stem) can be assembled, disassembled, and maintained from the top of the valve body without removing the entire valve from the pipeline. Therefore, a top-entry ball valve is a type of ball valve that can be maintained online, meaning that maintenance can be performed while the valve is in operation.

[0003] Currently, the structure of top-entry ball valves in existing technology is extremely complex. Assembling or disassembling these valves requires specialized tools, which are difficult to operate, have high training costs for personnel, and require significant effort, manpower, and resources for management and maintenance. Therefore, the assembly and disassembly costs of top-entry ball valves in current technology are very high. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a valve core structure.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a valve core structure, comprising:

[0006] sphere;

[0007] A valve seat and a valve body, wherein a first chamber and a second chamber are formed between the valve seat and the valve body;

[0008] The first air inlet is connected to the first chamber.

[0009] The second air inlet is connected to the second chamber.

[0010] When gas is injected into the second chamber through the second air inlet, the gas in the second chamber pushes the valve seat forward;

[0011] When gas is injected into the first chamber through the first air inlet, the gas in the first chamber pushes the valve seat to move backward.

[0012] Preferably, the device further includes a spring seat and a spring. The spring seat has a spring mounting hole, the spring is mounted into the spring mounting hole, and at least a portion of the spring extends out of the spring mounting hole. The spring seat is disposed in the second chamber, one end of the spring is inserted into the spring mounting hole, and the other end of the spring abuts against the valve seat. When gas is injected into the second chamber, the gas pushes the spring seat forward, the spring seat pushes the spring to move, and the spring pushes the valve seat forward.

[0013] Preferably, it also includes a cover plate and a chain, the cover plate and the valve body are installed together by screws; the valve seat is provided with a third slot, the chain is inserted into the third slot, and the chain abuts against the cover plate.

[0014] Preferably, it also includes a retaining ring, wherein the valve seat is provided with a second retaining groove, the retaining ring is engaged in the second retaining groove, and the retaining ring abuts against the spring seat.

[0015] Preferably, the valve seat is provided with a first sealing ring mounting groove, in which a first sealing ring is installed, and the first sealing ring is tightly fitted to the valve body.

[0016] Preferably, the valve seat is provided with a second sealing ring mounting groove, in which a second sealing ring is installed, and the second sealing ring is tightly fitted to the valve body.

[0017] Preferably, the cover plate is provided with a third sealing ring mounting groove, in which a third sealing ring is installed, and the third sealing ring is tightly fitted to the valve seat.

[0018] Preferably, the valve body is provided with a fourth sealing ring mounting groove, in which a fourth sealing ring is installed, and the fourth sealing ring is tightly fitted to the cover plate.

[0019] Preferably, the chain includes a predetermined number of chain units and connectors. One end of one of two adjacent chain units is connected to the connector by a pin, and one end of the other of two adjacent chain units is connected to the connector by a pin, thereby connecting the two adjacent chain units together.

[0020] The beneficial effects of this application are as follows: The valve core structure provided by this application has the advantages of simple structure and easy assembly and disassembly. Given the presence of a first air inlet, a first chamber, a second air inlet, and a second chamber, only compressed air needs to be injected into the first and second chambers to make the valve seat move along a preset path. After the valve seat moves backward a certain distance, it inserts the ball; after the valve seat moves forward a certain distance, the valve seat and the ball are sealed together. Under the pressure of the spring and compressed air, the valve seat remains tightly fitted to the ball, thus ensuring a seal between the valve seat and the ball. Compared with the valve core structure in the prior art, the valve core structure in this application does not require special tools for assembly and disassembly, saving the management and maintenance of special tools, thereby reducing installation costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a top-mounted ball valve provided by this utility model.

[0022] Figure 2 for Figure 1 The image shows a partial enlarged view at point A of a top-mounted ball valve, illustrating the valve core structure.

[0023] Figure 3 A schematic diagram of the chain structure of a valve core structure provided by this utility model. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0025] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0026] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0027] Please refer to Figure 1-3 This application provides a valve core structure (hereinafter referred to as "the valve core structure"), which includes:

[0028] sphere1;

[0029] Valve seat 2 and valve body 3, wherein a first chamber 101 and a second chamber 201 are formed between the valve seat 2 and the valve body 3;

[0030] The first air inlet 100 is connected to the first chamber 101;

[0031] The second air inlet 200 is connected to the second chamber 201;

[0032] When gas is injected into the second chamber 201 through the second air inlet 200, the gas in the second chamber 201 pushes the valve seat 2 forward.

[0033] When gas is injected into the first chamber 101 through the first air inlet 100, the gas in the first chamber 101 pushes the valve seat 2 to move backward. In this application, compressed air is injected into the first chamber 101. When the compressed air in the first chamber 101 reaches a certain value, the compressed air in the first chamber 101 pushes the valve seat forward a preset distance. At this time, the ball 1 is inserted. After the ball 1 is inserted, the injection of gas into the first chamber 101 is stopped, and then the gas in the first chamber 101 is released. Next, gas is injected into the second chamber 201. Under the push of the gas in the second chamber 201, the valve seat 2 moves backward and moves closer to the ball 1.

[0034] Please refer to some embodiments of this application. Figure 1-3The valve core structure also includes a spring seat 6 and a spring 7. The spring seat 6 has a spring mounting hole 60, and the spring 7 is installed into the spring mounting hole 60, with at least a portion of the spring 7 extending out of the spring mounting hole 60. The spring seat 6 is disposed in the second chamber 201, one end of the spring 7 is inserted into the spring mounting hole 60, and the other end of the spring 7 abuts against the valve seat 2. When gas is injected into the second chamber 201, the gas pushes the spring seat 6 forward, the spring seat 6 pushes the spring 7 forward, and the spring 7 pushes the valve seat 2 forward. Gas is injected into the second chamber 201, and under the action of the gas pressure in the second chamber 201 and the elastic force of the spring 7, the valve seat 2 and the ball 1 achieve a seal. Afterwards, the injection of gas into the second chamber 201 is stopped, and the second air inlet 200 is sealed with a screw plug.

[0035] Please refer to some embodiments of this application. Figure 1-3 The valve core structure also includes a cover plate 4 and a chain 5. The cover plate 4 and the valve body 3 are installed together by screws. The valve seat 2 is provided with a third slot 23, and the chain 5 is inserted into the third slot 23, and the chain 5 abuts against the cover plate 4. In this application, gas is injected into the second chamber 201 to push the valve seat 2 and the ball 1 to seal against each other. Then, the chain 5 is inserted into the third slot 23, and then the cover plate 4 and the valve body 3 are installed together. Then, the gas source is removed, and the second air inlet 200 is sealed with a screw plug, thereby achieving a seal between the valve seat 2 and the ball 1.

[0036] Please refer to some embodiments of this application. Figure 1-3 The valve core structure also includes a retaining ring 8. A second retaining groove 22 is provided on the valve seat 2. The retaining ring 8 is engaged in the second retaining groove 22, and the retaining ring 8 abuts against the spring seat 6. Thus, the spring 7 is first installed into the spring seat 6, and then the retaining ring 8 is installed onto the valve seat 2.

[0037] Please refer to some embodiments of this application. Figure 1-3 The valve seat 2 is provided with a first sealing ring mounting groove 10, in which a first sealing ring 41 is installed. The first sealing ring 41 is tightly fitted to the valve body 3. In this way, the first sealing ring 41 prevents gas in the second chamber 201 from leaking through the gap between the valve body 3 and the valve seat 2.

[0038] Please refer to some embodiments of this application. Figure 1-3The valve seat 2 is provided with a second sealing ring mounting groove 20, in which a second sealing ring 21 is installed. The second sealing ring 21 is tightly fitted to the valve body 3. In this way, the second sealing ring 21 prevents gas in the first chamber 101 from leaking through the gap between the valve body 3 and the valve seat 2.

[0039] Please refer to some embodiments of this application. Figure 1-3 The cover plate 4 is provided with a third sealing ring mounting groove 30, in which a third sealing ring 31 is installed, and the third sealing ring 31 is tightly fitted to the valve seat 2.

[0040] Please refer to some embodiments of this application. Figure 1-3 The valve body 3 is provided with a fourth sealing ring mounting groove 50, and a fourth sealing ring 51 is installed in the fourth sealing ring mounting groove 50. The fourth sealing ring 51 is tightly fitted to the cover plate 4.

[0041] Please refer to some embodiments of this application. Figure 1-3 The chain 5 includes a predetermined number of chain units 51 and connectors 52. One end of one of two adjacent chain units 51 is connected to the connector 52 via a pin 53, and one end of the other of two adjacent chain units 51 is also connected to the connector 52 via a pin 53, thereby connecting adjacent chain units 51 together. In this way, multiple chain units 51 are connected end-to-end to form a loop chain, which engages the chain 5 in the third slot 23.

[0042] The working principle of this application is as follows: This application provides a valve core structure. When installing this valve core structure, first install the spring onto the spring seat, install the retaining ring onto the valve seat, and then install the valve seat onto the valve body. Inject compressed air into the first chamber. Under the push of the compressed air, the valve seat moves backward a certain distance and then inserts the ball into the valve body. Release the compressed air from the first chamber. Then, inject compressed air into the second chamber. Under the push of the compressed air, the valve seat moves forward. During the movement of the valve seat, the spring is compressed and has elastic force. Under the elastic force of the spring and the air pressure of the compressed air, the valve seat and the ball are sealed together, thus achieving a seal between the valve seat and the ball. Then, seal the second air inlet with a screw plug. Insert the chain into the third retaining groove and install the cover plate together with the valve body. In this way, the installation of the valve core structure is completed.

[0043] The valve core structure provided in this application has the advantages of simple structure and easy assembly and disassembly. Given the presence of a first air inlet, a first chamber, a second air inlet, and a second chamber, simply injecting compressed air into the first and second chambers allows the valve seat to move along a preset path. After moving backward a certain distance, the valve seat inserts the ball; after moving forward a certain distance, the valve seat and ball seal together, and under the pressure of the spring and compressed air, the valve seat remains tightly fitted to the ball, thus ensuring a seal between them. Compared to valve core structures in the prior art, the valve core structure in this application requires no special tools for assembly and disassembly, eliminating the need for special tool management and maintenance, thereby reducing installation costs.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A valve core structure, characterized in that, include: sphere; A valve seat and a valve body, wherein a first chamber and a second chamber are formed between the valve seat and the valve body; The first air inlet is connected to the first chamber. The second air inlet is connected to the second chamber. When gas is injected into the second chamber through the second air inlet, the gas in the second chamber pushes the valve seat forward; When gas is injected into the first chamber through the first air inlet, the gas in the first chamber pushes the valve seat to move backward.

2. The valve core structure according to claim 1, characterized in that, It also includes a spring seat and a spring. The spring seat has a spring mounting hole, the spring is mounted into the spring mounting hole, and at least a portion of the spring extends out of the spring mounting hole. The spring seat is disposed in the second chamber, one end of the spring is inserted into the spring mounting hole, and the other end of the spring abuts against the valve seat. When gas is injected into the second chamber, the gas pushes the spring seat forward, the spring seat pushes the spring to move, and the spring pushes the valve seat forward.

3. The valve core structure according to claim 1, characterized in that, It also includes a cover plate and a chain, the cover plate and the valve body are installed together by screws; the valve seat is provided with a third slot, the chain is inserted into the third slot, and the chain abuts against the cover plate.

4. The valve core structure according to claim 2, characterized in that, It also includes a retaining ring, and the valve seat is provided with a second retaining groove. The retaining ring is engaged in the second retaining groove and abuts against the spring seat.

5. The valve core structure according to claim 1, characterized in that, The valve seat is provided with a first sealing ring mounting groove, in which a first sealing ring is installed, and the first sealing ring is tightly fitted to the valve body.

6. The valve core structure according to claim 1, characterized in that, The valve seat is provided with a second sealing ring mounting groove, in which a second sealing ring is installed, and the second sealing ring is tightly fitted to the valve body.

7. The valve core structure according to claim 3, characterized in that, The cover plate is provided with a third sealing ring mounting groove, in which a third sealing ring is installed, and the third sealing ring is tightly fitted to the valve seat.

8. The valve core structure according to claim 3, characterized in that, The valve body is provided with a fourth sealing ring mounting groove, in which a fourth sealing ring is installed, and the fourth sealing ring is tightly fitted to the cover plate.

9. The valve core structure according to claim 3, characterized in that, The chain includes a predetermined number of chain units and connectors. One end of one of two adjacent chain units is connected to the connector by a pin, and one end of the other of two adjacent chain units is connected to the connector by a pin, thereby connecting the two adjacent chain units together.

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