Fluid switch convenient to disassemble and maintain

Abstract

The utility model provides a kind of fluid switch convenient to dismount and maintain, it mainly includes valve body, valve core, valve seat, valve stem, liquid inlet connector, liquid outlet connector, filler, plug, handle and filter screen. Among them, liquid inlet connector, liquid outlet connector and valve body are connected by bolt fastening between the mounting hole of valve body outside, can be conveniently and quickly complete the dismounting operation of fluid switch, simplify the replacement process and operation difficulty of sealing element, provide convenient maintenance performance.Liquid inlet connector is provided with filter screen structure, can make the utility model adapt to more dust, more particulate matter and other easily accumulated impurities harsh working environment, effectively reduce the wear and tear consumption rate of sealing element in fluid switch, improve service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of power auxiliary fluid system for special vehicles, and specifically relates to a fluid switch that is easy to disassemble and maintain. Background Technology

[0002] Fluid switches, as important components of fluid systems, are widely used in various fields such as water conservancy, petroleum, chemical industry, shipbuilding, aviation, and automobiles. Among them, ball valve switches are commonly used. They are usually composed of a valve body, valve core, seals, and switch handle. Although their structure is simple and compact and their sealing performance is reliable, in harsh working environments where fluids easily accumulate impurities such as sand and dust, the wear rate of the ball valve switch's seals is accelerated, significantly reducing the service life of the ball valve switch. Furthermore, replacing the seals of ordinary ball valves is a cumbersome and difficult process, extending equipment maintenance time and increasing maintenance costs. Utility Model Content

[0003] (a) Technical problems to be solved This invention proposes a fluid switch that is easy to disassemble and maintain, in order to solve the technical problem that ball valve seals are difficult to replace due to rapid wear when working in harsh environments such as those with sand and dust, resulting in complicated replacement procedures, extended equipment maintenance time and increased maintenance costs.

[0004] (II) Technical Solution To address the aforementioned technical problems, this utility model proposes a fluid switch that is easy to disassemble and maintain. This fluid switch includes a valve body, valve core, valve seat, valve stem, inlet connector, outlet connector, filler, plug, and handle; wherein, The valve core is installed in the center of the valve body, and the valve core has a circular through hole for fluid to pass through; two valve seats are installed inside the valve body and are located on the left and right sides of the valve core respectively, and the valve seats have a circular opening in the center. Symmetrical mounting holes are provided on the outer side of the valve body. Using these mounting holes, the inlet and outlet connectors are fastened to the left and right ends of the valve body by bolts. Both the inlet and outlet connectors are provided with fluid channels. The bottom of the valve stem passes through the center opening at the top of the valve body and connects with the valve core. The valve core can rotate around the valve stem as the central axis under the drive of the valve stem to realize the flow control of the fluid. The valve body has a valve stem fixing boss with a central threaded hole on the outer periphery of the center opening at the top. The filler is sleeved on the valve stem. The bottom and inner sides of the filler are in contact with the lower stepped structure of the valve stem, and the bottom and outer sides of the filler are in contact with the internal stepped structure of the valve stem fixing boss. While pressing the valve stem, it can achieve a seal between the valve stem and the valve body to prevent fluid leakage. The plug sleeve is mounted on the valve stem, connected to the center threaded hole of the valve stem fixing boss via an external thread, and positioned above the filler. The front end of the handle is provided with an opening that matches the shape of the upper end of the valve stem. The handle is fitted onto the upper end of the valve stem through the front opening, located above the plug, and is secured by a fastening nut and a fastening nut washer. The bottom and inner sides of the front end of the handle are in contact with the upper stepped structure of the valve stem and the top surface of the plug.

[0005] Furthermore, the shape of the contact surface between the valve seat and the valve core is set according to the shape of the valve core.

[0006] Furthermore, the valve seat has a circular opening at its center that is the same size as the circular through hole of the valve core.

[0007] Furthermore, both the inlet and outlet connectors are provided with fluid channels of the same size as the circular through-hole of the valve core, and bulging structures are provided at both ends respectively.

[0008] Furthermore, the inlet and outlet connectors are each provided with two connector sealing ring mounting grooves on their contact surfaces with the valve body, and the connector sealing rings are installed in the connector sealing ring mounting grooves.

[0009] Furthermore, the inlet connector has a filter screen mounting groove on its contact surface with the valve seat. The filter screen is installed in the filter screen mounting groove and fixed by the clamping fit between the valve seat and the inlet connector. The filter screen is used to filter impurities flowing into the valve body.

[0010] Furthermore, the top of the plug is an annular boss structure, and a plug washer is provided between the top of the boss structure and the top of the valve stem fixing boss.

[0011] Furthermore, a valve stem sealing ring mounting groove is provided on the side wall of the lower stepped structure of the valve stem. The valve stem sealing ring is installed in the valve stem sealing ring mounting groove and forms an interference fit with the inner ring of the filler to achieve sealing of the valve stem.

[0012] Furthermore, a valve body sealing ring is provided on the outer ring of the filler, and the valve body sealing ring cooperates with the inner wall of the valve stem fixing boss of the valve body to achieve a sealing effect.

[0013] Furthermore, the valve body has a limit block on the outer periphery of the valve stem fixing boss, and the handle has a stop block that works in conjunction with the limit block to limit the handle to only drive the valve core to rotate 90° around the valve stem, thereby realizing the limit opening and closing of the fluid switch.

[0014] (III) Beneficial Effects This invention proposes a fluid switch that is easy to disassemble, assemble, and maintain. It mainly includes a valve body, valve core, valve seat, valve stem, inlet connector, outlet connector, filler, plug, handle, and filter screen. The inlet connector and outlet connector are bolted to the valve body via mounting holes on the outside of the valve body, allowing for convenient and quick disassembly and assembly of the fluid switch. This simplifies the replacement process and reduces the difficulty of replacing seals, providing convenient maintenance. The inlet connector incorporates a filter screen structure, enabling this invention to withstand harsh working environments with high levels of dust and particulate matter, effectively reducing the wear rate of the seals within the fluid switch and extending its service life. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the fluid switch of this utility model, which is easy to disassemble and maintain; Figure 2 This is an exploded view of the fluid switch of this utility model, which is easy to disassemble and maintain. Figure 3 This is a three-dimensional cross-sectional view of the fluid switch of this utility model, which is easy to disassemble and maintain. Detailed Implementation

[0016] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0017] This embodiment proposes a fluid switch that is easy to disassemble and maintain, and can be used in harsh working environments where impurities easily accumulate, such as those with high levels of dust and particulate matter. Its overall structure is as follows: Figures 1-3 As shown, it mainly includes valve body 1, valve core 2, valve seat 3, valve stem 4, inlet connector 5, outlet connector 6, filler 7, plug 8, handle 9, connector sealing ring 10, filter screen 11, fastening nut 12, fastening nut washer 13, plug washer 14, valve body sealing ring 15, valve stem sealing ring 16, and limit block 20.

[0018] The valve core 2 is installed in the center of the valve body 1, and has a circular through-hole for fluid passage. Two valve seats 3 are installed inside the valve body 1 and located on the left and right sides of the valve core 2, respectively. The contact surface shape between the valve seats 3 and the valve core 2 is designed according to the shape of the valve core 2, which not only restricts the position of the valve core 2 but also provides a good seal. To ensure better fluid flow and lower resistance, the center of the valve seat 3 has an opening with the same size as the circular through-hole of the valve core 2.

[0019] Symmetrical mounting holes are provided on the outer side of the valve body 1. Using these holes, the inlet connector 5 and outlet connector 6 are bolted to the left and right ends of the valve body 1, respectively. Both the inlet connector 5 and outlet connector 6 have fluid channels with the same size as the circular through-hole of the valve core 2, and each has a raised structure at both ends for connecting to other pipelines in the piping system. Two connector sealing ring mounting grooves 18 are provided on the contact surface between the inlet connector 5 and outlet connector 6 and the valve body 1. Connector sealing rings 10 are installed in the connector sealing ring mounting grooves 18 to seal the connection between the inlet connector 5 and outlet connector 6 and the valve body 1. A filter screen mounting groove 19 is provided on the contact surface between the inlet connector 5 and the valve seat 3. A filter screen 11 is installed in the filter screen mounting groove 19 and fixed by a compression fit between the valve seat 3 and the inlet connector 5. The filter screen 11 filters impurities flowing into the valve body 1, reducing the wear rate of the seals. The inlet connector 5 and outlet connector 6 can be quickly disassembled and assembled, which simplifies the replacement process and operation difficulty of the seals, facilitates the cleaning of the filter screen 11 and the replacement of the valve seat 3, thereby improving the convenience of maintenance.

[0020] The bottom of the valve stem 4 passes through the central opening at the top of the valve body 1 and connects with the valve core 2. The valve core 2 can rotate around the valve stem 4 as the central axis under the drive of the valve stem 4, thereby realizing the flow control of fluid. The valve body 1 has a valve stem fixing boss with a central threaded hole on the outer periphery of the central opening at the top. The filler 7 is sleeved on the valve stem 4. The bottom and inner sides of the filler 7 are in contact with the lower stepped structure of the valve stem 4, and the bottom and outer sides of the filler 7 are in contact with the inner stepped structure of the valve stem fixing boss. While pressing the valve stem 4, it can achieve a seal between the valve stem 4 and the valve body 1 to prevent fluid leakage.

[0021] A plug 8 is fitted onto the valve stem 4 and connected to the central threaded hole of the valve stem fixing boss via an external thread. It is positioned above the filler 7. The top of the plug 8 is an annular boss structure. A plug washer 14 is placed between the top of the boss structure and the valve stem fixing boss. The plug 8 provides auxiliary sealing while simultaneously compressing the filler 7 and the valve stem 4. A valve stem sealing ring mounting groove 17 is provided on the side wall of the lower stepped structure of the valve stem 4. The valve stem sealing ring 16 is installed in the valve stem sealing ring mounting groove 17, forming an interference fit with the inner ring of the filler 7 to seal the valve stem 4. A valve body sealing ring 15 is provided on the outer ring of the filler 7. The valve body sealing ring 15 mates with the inner wall of the valve stem fixing boss of the valve body 1 to achieve a sealing effect.

[0022] The handle 9 has an opening at its front end that matches the shape of the upper end of the valve stem 4. The handle 9 is fitted onto the upper end of the valve stem 4 through the front opening, positioned above the plug 8, and secured by a fastening nut 12 and a fastening nut washer 13. The bottom and inner sides of the front end of the handle 9 contact the upper stepped structure of the valve stem 4 and the top surface of the plug 8. The handle 9 is used to drive the valve stem 4 to rotate. The valve body 1 has a limit block 20 on the outer periphery of the valve stem fixing boss. The handle 9 has a stop block that cooperates with the limit block 20 to limit the handle 9 to drive the valve core 2 to rotate 90° around the valve stem 4, thereby realizing the limited opening and closing of the fluid switch.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fluid switch that is easy to disassemble, assemble, and maintain, characterized in that, The fluid switch, which is easy to disassemble and maintain, includes a valve body, valve core, valve seat, valve stem, inlet connector, outlet connector, filler, plug, and handle; wherein, The valve core is installed in the center of the valve body, and the valve core has a circular through hole for fluid to pass through; two valve seats are installed inside the valve body and are located on the left and right sides of the valve core respectively, and the valve seats have a circular opening in the center. The valve body has symmetrical mounting holes on its outer side. The inlet and outlet connectors are fastened to the left and right ends of the valve body by bolts through the mounting holes. Both the inlet and outlet connectors are provided with fluid channels. The bottom of the valve stem passes through the central opening at the top of the valve body and connects with the valve core. The valve core can rotate around the valve stem as the central axis under the drive of the valve stem, thereby realizing the flow control of the fluid. The valve body has a valve stem fixing boss with a central threaded hole on the outer periphery of the central opening at the top. The filler is sleeved on the valve stem. The bottom and inner sides of the filler are in contact with the lower stepped structure of the valve stem, and the bottom and outer sides of the filler are in contact with the internal stepped structure of the valve stem fixing boss. While pressing the valve stem, it can achieve a seal between the valve stem and the valve body to prevent fluid leakage. The plug sleeve is mounted on the valve stem, connected to the central threaded hole of the valve stem fixing boss via an external thread, and positioned above the filler. The front end of the handle is provided with an opening that matches the shape of the upper end of the valve stem. The handle is sleeved on the upper end of the valve stem through the front opening, located above the plug, and is fastened by a fastening nut and a fastening nut washer. The bottom and inner sides of the front end of the handle are in contact with the upper stepped structure of the valve stem and the top surface of the plug.

2. The fluid switch as described in claim 1, characterized in that, The shape of the contact surface between the valve seat and the valve core is set according to the outer shape of the valve core.

3. The fluid switch as described in claim 1, characterized in that, The valve seat has a circular opening at its center that is the same size as the circular through hole in the valve core.

4. The fluid switch as described in claim 1, characterized in that, Both the inlet and outlet connectors are provided with fluid channels of the same size as the circular through-hole of the valve core, and bulging structures are provided at both ends respectively.

5. The fluid switch as described in claim 1, characterized in that, The inlet and outlet connectors are each provided with two connector sealing ring mounting grooves on their contact surfaces with the valve body, and the connector sealing rings are installed in the connector sealing ring mounting grooves.

6. The fluid switch as described in claim 1, characterized in that, The inlet connector has a filter screen mounting groove on its contact surface with the valve seat. The filter screen is installed in the filter screen mounting groove and fixed by the clamping fit between the valve seat and the inlet connector. The filter screen is used to filter impurities flowing into the valve body.

7. The fluid switch as described in claim 1, characterized in that, The top of the plug is an annular boss structure, and a plug washer is provided between the top of the boss structure and the top of the valve stem fixing boss.

8. The fluid switch as described in claim 1, characterized in that, The lower stepped structure of the valve stem has a valve stem sealing ring mounting groove on its side wall. The valve stem sealing ring is installed in the valve stem sealing ring mounting groove and forms an interference fit with the inner ring of the filler to achieve a seal on the valve stem.

9. The fluid switch as described in claim 1, characterized in that, A valve body sealing ring is provided on the outer ring of the filler. The valve body sealing ring cooperates with the inner wall of the valve stem fixing boss of the valve body to achieve a sealing effect.

10. The fluid switch as described in claim 1, characterized in that, The valve body has a limit block on the outer periphery of the valve stem fixing boss, and the handle is equipped with a stop block that works in conjunction with the limit block. This limits the handle to only allow the valve core to rotate 90° around the valve stem, thereby achieving the limited opening and closing of the fluid switch.

Images