A throttle valve spool

Abstract

The utility model discloses a throttle valve valve core relates to the field of throttle valve, including throttle valve shell and valve cover sleeve, the inside of throttle valve shell is passed through and is equipped with the installation pipe, the right side fixedly connected with side connecting end plate of installation pipe, the bottom fixed mounting of throttle valve shell is equipped with the interface pipe, the bottom fixedly connected with lower connecting end plate of interface pipe, still include, the bottom fixed mounting of valve cover sleeve is equipped with the communicating pipe, the bottom fixedly connected with second installation ring board of communicating pipe, the inner top wall of valve cover sleeve is provided with internal thread. Through being provided with second installation ring board, upper limit pad and bolt, can install or disassemble maintenance to throttle valve valve core, and is provided with sealing washer and sealing groove, can seal to throttle valve, ensure the stability of throttle valve valve core follow -up work, and is provided with external thread and internal thread, can disassemble replacement or cleaning to throttle valve valve body.

Description

Technical Field

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

[0002] A throttle valve controls fluid flow by changing the throttling cross-section or throttling length. The valve core is the core component of the throttle valve, and its main function is to achieve precise flow control by controlling the size of the cross-sectional area through which the medium passes.

[0003] When using existing throttle valve cores, corrosion can occur due to prolonged use, leading to core damage and impaired adjustment. This can also cause valve jamming, air leakage, and other problems, necessitating disassembly, repair, or installation of the throttle valve core.

[0004] To overcome the above-mentioned defects, the prior art (Chinese patent application number: 201820502534.8, application date: April 10, 2018) discloses a throttle valve that is easy to disassemble. The throttle valve is equipped with a snap-fit ​​fixing device and a rotation fixing device to fix the throttle valve to the connecting pipe. It is simple to operate and easy to install. It is equipped with a fixing sleeve to provide a connection medium for the throttle valve and the connecting pipe, which facilitates the disassembly of the two without damaging the connecting pipe and the throttle valve, thereby increasing the service life of the throttle valve.

[0005] While existing technologies can solve the problem of disassembling and replacing the valve core of a throttle valve, and install the throttle valve and connecting pipes using snap-fit ​​and rotation fixing devices, they lack a sealing structure, making it easy for fluid to leak from the connection between the throttle valve and the connecting pipe. This reduces the stability of the throttle valve core in subsequent operation, and cannot effectively install or disassemble the throttle valve core for maintenance, nor can it replace or clean the throttle valve body.

[0006] Therefore, we proposed a throttle valve core that can effectively solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a throttle valve core to solve the problems mentioned in the background art. Currently, a throttle valve core on the market is installed by a snap-fit ​​fixing device and a rotation fixing device, but no sealing structure is set. This makes it easy for fluid to leak from the connection between the throttle valve and the connecting pipe, reducing the stability of the subsequent operation of the throttle valve core. Furthermore, it is impossible to effectively install or disassemble the throttle valve core for maintenance, and it is impossible to replace or clean the throttle valve body.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a throttle valve core, comprising a throttle valve housing and a valve cover sleeve, wherein an installation tube extends through the interior of the throttle valve housing, a side connecting end plate is fixedly connected to the right side of the installation tube, an interface tube is fixedly installed at the bottom of the throttle valve housing, and a lower connecting end plate is fixedly connected to the bottom of the interface tube;

[0009] It also includes: a connecting pipe is fixedly installed at the bottom of the valve cover sleeve, a second mounting ring plate is fixedly connected to the bottom of the connecting pipe, an internal thread is provided on the inner top wall of the valve cover sleeve, and a sealing cylinder passes through the inner wall of the internal thread on the inner top wall of the valve cover sleeve.

[0010] A first mounting ring plate is fixedly installed on the top of the throttle valve housing. A sealing groove is formed on the upper surface of the first mounting ring plate. Several threaded holes are formed on the outer wall of the sealing groove inside the throttle valve housing. A valve seat is provided inside the throttle valve housing.

[0011] As a preferred technical solution of this application, a sealing gasket is fixedly connected to the bottom of the second mounting ring plate, and the end of the sealing gasket passes through the sealing groove. A bolt passes through the inside of the second mounting ring plate, and the end of the bolt is inserted into a threaded hole.

[0012] As a preferred technical solution of this application, the outer wall of the sealing cylinder is provided with external threads, the top of the sealing cylinder is fixedly connected with a pressure cap, and the pressure cap is located on the top of the valve cover sleeve. An end seat is fixedly installed on the top of the pressure cap, a valve stem passes through the interior of the end seat, and the end of the valve stem passes through the throttle valve housing. A valve core body is fixedly installed at the bottom of the valve stem, and a handle is sleeved on the top of the valve stem.

[0013] As a preferred technical solution of this application, the sealing gasket and the sealing groove are matched, the sealing groove and the first mounting ring plate are integrally set, and the first mounting ring plate and the second mounting ring plate are detachably connected. By manually pulling out each bolt from the corresponding threaded hole, the valve cover sleeve drives the second mounting ring plate to separate from the first mounting ring plate.

[0014] As a preferred technical solution of this application, the internal thread and the external thread are connected by a thread, the external thread and the sealing cylinder are tightly fitted, and the sealing cylinders are detachably connected. By rotating the end cap connected to the end seat counterclockwise, the end cap drives the external thread and the internal thread connected to the sealing cylinder to rotate, thereby the sealing cylinder drives the end cap to move upward and disengage from the valve cover sleeve.

[0015] As a preferred technical solution of this application, the sealing cylinder and the pressure cap are connected, and the pressure cap and the valve cover sleeve are matched. The sealing cylinder drives the pressure cap to move upward together to disengage from the valve cover sleeve, so that the valve core body connected to the valve stem inside the sealing cylinder can be removed from the valve cover sleeve.

[0016] As a preferred technical solution of this application, the pressure cap is composed of a convex rubber structure, and the pressure cap and the valve stem are movably connected. The protruding part of the pressure cap is compressed and filled into the top inner wall of the valve cover sleeve, thereby forming a sealing interface and enhancing the sealing performance of the throttle valve.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The throttle valve core, with its second mounting ring plate, upper limit plate, and bolts, allows for installation, disassembly, and maintenance. It also features a sealing gasket and sealing groove to ensure a secure seal, guaranteeing the stability of the valve core's subsequent operation. Furthermore, the presence of external and internal threads allows for disassembly, replacement, or cleaning of the valve body. Details are as follows:

[0019] 1. A second mounting ring plate and an upper limit plate are set. The sealing gasket connected by the second mounting ring plate is inserted into the sealing groove in the first mounting ring plate. Each bolt is manually passed through the second mounting ring plate and inserted into the corresponding threaded hole, so that the valve cover sleeve is installed on the throttle valve housing, which facilitates the installation of the throttle valve core.

[0020] Furthermore, a sealing gasket and a sealing groove are provided. The sealing gasket is installed in the sealing groove to form a tight sealing interface, which effectively prevents fluid leakage from the connection between the valve cover sleeve and the throttle valve housing, and ensures the stability of the subsequent operation of the throttle valve core.

[0021] Furthermore, bolts are installed, and by manually pulling each bolt out of the corresponding threaded hole, the valve cover sleeve drives the second mounting ring plate to separate from the first mounting ring plate, thereby disassembling the valve cover sleeve and the throttle valve housing, which facilitates the disassembly and maintenance of the throttle valve body.

[0022] 2. A gland is provided. The protruding part of the gland is compressed and filled into the inner wall of the valve cover sleeve, thereby forming a sealing interface, enhancing the sealing performance of the throttle valve, and further improving the stability of the throttle valve core operation.

[0023] Furthermore, external and internal threads are provided. By rotating the end cap connected to the end seat counterclockwise, the sealing cylinder moves upward together with the pressure cap to disengage from the valve cover sleeve. Then, the valve core body connected to the valve stem inside the sealing cylinder is removed from the valve cover sleeve, which facilitates the disassembly, replacement or cleaning of the throttle valve body. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of this utility model;

[0026] Figure 3 This is a partial structural diagram of the throttle valve housing of this utility model;

[0027] Figure 4 This is a partial structural diagram of the valve cover sleeve of this utility model;

[0028] Figure 5 This is a partial structural diagram of the connecting pipe and valve stem of this utility model;

[0029] Figure 6 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0030] Figure 7 This utility model Figure 2 Enlarged structural diagram at point B.

[0031] In the diagram: 1. Throttling valve housing; 2. Valve cover sleeve; 3. Mounting pipe; 4. Side connecting end plate; 5. Interface pipe; 6. Lower connecting end plate; 7. First mounting ring plate; 8. Sealing groove; 9. Threaded hole; 10. Connecting pipe; 11. Second mounting ring plate; 12. Sealing gasket; 13. Bolt; 14. Internal thread; 15. Gland; 16. Sealing cylinder; 17. External thread; 18. End seat; 19. Valve stem; 20. Valve core body; 21. Handle; 22. Valve seat. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-7 The present invention provides the following technical solution:

[0034] Example 1: To address the problem that a certain type of throttle valve core on the market, when used, is installed between the throttle valve and the connecting pipe using a snap-fit ​​fixing device and a rotation fixing device, but without a sealing structure, allows fluid to easily leak from the connection between the throttle valve and the connecting pipe, reducing the stability of the throttle valve core's subsequent operation, and making it impossible to effectively install or disassemble the throttle valve core for maintenance, please refer to the attached... Figure 1 - Appendix Figure 4 and attached Figure 7The system includes a throttle valve housing 1 and a valve cover sleeve 2. An installation tube 3 runs through the interior of the throttle valve housing 1. A side connecting end plate 4 is fixedly connected to the right side of the installation tube 3. An interface tube 5 is fixedly installed at the bottom of the throttle valve housing 1, and a lower connecting end plate 6 is fixedly connected to the bottom of the interface tube 5. A first mounting ring plate 7 is fixedly installed at the top of the throttle valve housing 1. A sealing groove 8 is formed on the upper surface of the first mounting ring plate 7. Several threaded holes 9 are formed on the outer wall of the sealing groove 8 inside the throttle valve housing 1. A valve seat 22 is provided inside the throttle valve housing 1. A sealing gasket 12 is fixedly connected to the bottom of a second mounting ring plate 11, and the end of the sealing gasket 12 passes through the sealing groove 8. A bolt 13 runs through the interior of the second mounting ring plate 11, and the end of the bolt 13 is inserted into the threaded hole 9. The sealing gasket 12 and the sealing groove 8 are matched, the sealing groove 8 and the first mounting ring plate 7 are integrally formed, and the first mounting ring plate 7 and the second mounting ring plate 11 are detachably connected.

[0035] The valve cover sleeve 2 drives the sealing gasket 12 connected to the second mounting ring plate 11 to be inserted into the sealing groove 8 opened in the first mounting ring plate 7. The bolts 13 are manually inserted through the second mounting ring plate 11 into the corresponding threaded holes 9, so that the valve cover sleeve 2 is installed on the throttle valve housing 1. The sealing gasket 12 installed in the sealing groove 8 forms a tight sealing interface, which effectively prevents fluid from leaking from the connection between the valve cover sleeve 2 and the throttle valve housing 1, and ensures the stability of the throttle valve core in subsequent operation. When disassembly is required, the bolts 13 are manually pulled out of the corresponding threaded holes 9, so that the valve cover sleeve 2 drives the second mounting ring plate 11 to separate from the first mounting ring plate 7, thereby disassembling the valve cover sleeve 2 and the throttle valve housing 1, which facilitates the disassembly and maintenance of the throttle valve body.

[0036] Example 2: The throttle valve body can be disassembled, replaced, or cleaned. See attached diagram for details. Figure 1 - Appendix Figure 2 and attached Figure 5 - Appendix Figure 6A connecting pipe 10 is fixedly installed at the bottom of the valve cover sleeve 2, and a second mounting ring plate 11 is fixedly connected to the bottom of the connecting pipe 10. An internal thread 14 is provided on the inner top wall of the valve cover sleeve 2, and a sealing cylinder 16 passes through the inner wall of the internal thread 14. An external thread 17 is provided on the outer wall of the sealing cylinder 16, and a pressure cap 15 is fixedly connected to the top of the sealing cylinder 16, located at the top of the valve cover sleeve 2. An end seat 18 is fixedly installed on the top of the pressure cap 15, and a valve stem 19 passes through the interior of the end seat 18, with the end of the valve stem 19 passing through the throttle valve housing 1. A valve core body 20 is fixedly installed at the bottom of the valve stem 19, and a handle 21 is sleeved on the top of the valve stem 19. The internal thread 14 and the external thread 17 are threadedly connected, the external thread 17 and the sealing cylinder 16 are tightly fitted, and the sealing cylinders 16 are detachably connected. The sealing cylinder 16 and the gland 15 are connected, and the gland 15 and the valve cover sleeve 2 are matched. The gland 15 is composed of a convex rubber structure, and the gland 15 and the valve stem 19 are movably connected.

[0037] The pressure cap 15, connected to the sealing cylinder 16, is fitted onto the top of the valve cover sleeve 2. Since the pressure cap 15 is made of convex rubber, the protruding part of the pressure cap 15 is compressed and filled into the inner wall of the valve cover sleeve 2, thereby forming a sealing interface, enhancing the sealing performance of the throttle valve, and further improving the stability of the throttle valve core operation. By manually fixing the valve cover sleeve 2, the pressure cap 15 connected to the end seat 18 is rotated counterclockwise by hand or with an external wrench or other tool. This causes the pressure cap 15 to rotate the external thread 17 and internal thread 14 connected to the sealing cylinder 16. As a result, the sealing cylinder 16 moves the pressure cap 15 upward together and disengages it from the valve cover sleeve 2. Then, the valve core body 20 connected to the valve stem 19 inside the sealing cylinder 16 is removed from the valve cover sleeve 2, making it easier to disassemble, replace, or clean the throttle valve body.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A throttle valve core, comprising a throttle valve housing (1) and a valve cover sleeve (2), wherein an installation tube (3) extends through the interior of the throttle valve housing (1), a side connection end plate (4) is fixedly connected to the right side of the installation tube (3), an interface tube (5) is fixedly installed at the bottom of the throttle valve housing (1), and a lower connection end plate (6) is fixedly connected to the bottom of the interface tube (5). Its features are, Also includes: A connecting pipe (10) is fixedly installed at the bottom of the valve cover sleeve (2), and a second mounting ring plate (11) is fixedly connected at the bottom of the connecting pipe (10). An internal thread (14) is provided on the inner top wall of the valve cover sleeve (2), and a sealing cylinder (16) passes through the inner wall of the internal thread (14). The top of the throttle valve housing (1) is fixedly installed with a first mounting ring plate (7), and a sealing groove (8) is opened on the upper surface of the first mounting ring plate (7). Several threaded holes (9) are opened on the outer wall of the sealing groove (8) inside the throttle valve housing (1). A valve seat (22) is provided inside the throttle valve housing (1).

2. The throttle valve core according to claim 1, characterized in that: The bottom of the second mounting ring plate (11) is fixedly connected to a sealing gasket (12), and the end of the sealing gasket (12) passes through the sealing groove (8). The interior of the second mounting ring plate (11) is connected to a bolt (13), and the end of the bolt (13) is inserted into a threaded hole (9).

3. The throttle valve core according to claim 1, characterized in that: The outer wall of the sealing cylinder (16) is provided with an external thread (17). The top of the sealing cylinder (16) is fixedly connected with a pressure cap (15), and the pressure cap (15) is located on the top of the valve cover sleeve (2). The top of the pressure cap (15) is fixedly installed with an end seat (18). The valve stem (19) passes through the inside of the end seat (18), and the end of the valve stem (19) passes through the throttle valve housing (1). The bottom of the valve stem (19) is fixedly installed with a valve core body (20), and the top of the valve stem (19) is fitted with a handle (21).

4. The throttle valve core according to claim 2, characterized in that: The sealing gasket (12) and the sealing groove (8) are matched, the sealing groove (8) and the first mounting ring plate (7) are integrated, and the first mounting ring plate (7) and the second mounting ring plate (11) are detached.

5. A throttle valve core according to claim 1, characterized in that: The internal thread (14) and the external thread (17) are connected by a thread, the external thread (17) and the sealing cylinder (16) are tightly fitted, and the sealing cylinder (16) and the sealing cylinder (16) are detachable.

6. The throttle valve core according to claim 3, characterized in that: The sealing cylinder (16) and the pressure cap (15) are connected, and the pressure cap (15) and the valve cover sleeve (2) are matched.

7. A throttle valve core according to claim 6, characterized in that: The pressure cap (15) is composed of a convex rubber structure, and the pressure cap (15) and the valve stem (19) are movably connected.

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