A detachable multi-functional valve stem assembly

Abstract

This utility model relates to the field of valve technology, specifically disclosing a detachable multi-functional valve stem assembly, comprising: a valve body, a mounting frame fixedly mounted on the top of the valve body, a fixing plate fixedly mounted on the inner side wall of the mounting frame, a transmission assembly mounted on the fixing plate, a valve disc located inside the valve body, a rod located above the transmission assembly, a wheel fixedly mounted on the top of the rod, and a fixing mechanism mounted on the mounting frame; this utility model uses a limiting assembly to fix the rod, uses ball bearings to reduce frictional resistance during rod rotation, and uses a valve cover and connecting block to facilitate the limiting assemblies to move closer together to limit the rod's movement. Simultaneously, the transmission assembly allows the rod to easily drive the valve disc to rotate, making the rod easy to disassemble and replace for maintenance when deformed or damaged, thus improving the valve's efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a detachable multifunctional valve stem assembly. Background Technology

[0002] Valves, with their controllable opening, closing, regulating, or check actions, transform fluid pipelines into manageable, maintainable, and safe life systems. They ensure that the medium appears only when and where it is needed, and reliably disappears or remains in place when it is not needed, thereby guaranteeing process continuity, energy conservation, equipment safety, personnel health, and environmental protection. Without valves, every pipeline in modern industry and urban infrastructure would become an unpredictable disaster channel, while with valves, flow becomes an orderly, measurable, and controllable productive force.

[0003] In most existing valves, the valve stem and valve disc are fixed together. When the valve stem is deformed or damaged, it is not convenient to disassemble and replace the valve stem. The valve needs to be removed from the pipeline, which makes maintenance and inspection inconvenient and reduces the efficiency of valve use. Utility Model Content

[0004] The purpose of this invention is to provide a detachable multifunctional valve stem assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A detachable multi-functional valve stem assembly includes: a valve body, a mounting frame fixedly mounted on the top of the valve body, a fixing plate fixedly mounted on the inner side wall of the mounting frame, a transmission assembly mounted on the fixing plate, a valve disc inside the valve body, a rod above the transmission assembly, a wheel fixedly mounted on the top of the rod, and a fixing mechanism mounted on the mounting frame;

[0007] The fixing mechanism includes a connecting block fixedly installed on the top of the mounting frame. The connecting block is cylindrical in shape. A valve cover is threadedly connected to the outer wall of the connecting block. The outer wall of the connecting block has an external thread. The inner wall of the valve cover has a threaded groove that matches the external thread. A limiting component is provided between the connecting block and the valve cover.

[0008] Preferably, the limiting component includes a first limiting block fixedly disposed on the inner sidewall of the connecting block, and a second limiting block fixedly disposed on the top of the valve cover. The first limiting block and the second limiting block each have a limiting groove at opposite ends, and the first limiting block and the second limiting block are both arranged in a ring.

[0009] Preferably, a fixing block is fixedly provided on the outer wall of the rod body. The top and bottom of the fixing block are respectively set in two limiting grooves. Multiple rolling balls are embedded in the top and bottom of the fixing block. The multiple rolling balls are arranged in a ring at the top and bottom of the fixing block, and the outer wall of the ball is in contact with the inner wall of the corresponding limiting groove.

[0010] Preferably, the transmission assembly includes a rotating block that passes through and rotatably mounts on the fixed plate. The rotating block has a first keyway at its top and bottom, and a first key block is provided inside each of the two first keyways.

[0011] Preferably, the top of the first key block located at the top is fixedly connected to the bottom of the rod body, and a mounting block is fixedly provided at the bottom of the first key block located at the bottom, and a rotating assembly is provided between the mounting block and the valve disc.

[0012] Preferably, the rotating assembly includes a short rod fixedly disposed at the bottom of the mounting block, a second key block fixedly disposed at the bottom of the short rod, a second keyway adapted to the second key block being opened at the top of the valve disc, and the bottom of the second key block being inserted into the second keyway.

[0013] Preferably, the valve body has a through hole at the top that matches the short rod, a guide bushing is provided inside the through hole, the guide bushing is fitted on the short rod, and a sealing ring is provided at the top of the through hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The limit components are used to fix the rod body, and the ball bearings reduce the frictional resistance when the rod body rotates. The cooperation between the valve cover and the connecting block facilitates the limit components to move closer together to limit the rod body. At the same time, the transmission components make it easy for the rod body to drive the valve disc to rotate, and the rod body is easy to disassemble. When the rod body is deformed or damaged, it is easy to disassemble and replace the rod body without removing the valve from the pipeline, which facilitates maintenance and inspection and improves the efficiency of valve use. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a schematic diagram of the fixing mechanism in this utility model;

[0018] Figure 3 This is a cross-sectional view of the mounting frame in this utility model;

[0019] Figure 4 This is a cross-sectional view of the valve body in this utility model;

[0020] Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle;

[0021] In the diagram: 1. Valve body; 2. Mounting frame; 3. Fixing plate; 4. Valve disc; 5. Rod; 6. Wheel; 7. Connecting block; 8. Valve cover; 9. First limiting block; 10. Second limiting block; 11. Fixing block; 12. Ball bearing; 13. Rotating block; 14. First key block; 15. Mounting block; 16. Guide bushing; 17. Short rod; 18. Second key block. Detailed Implementation

[0022] 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.

[0023] Example 1:

[0024] Please see Figure 1 - Figure 5 As shown, a detachable multi-functional valve stem assembly includes: a valve body 1, a mounting frame 2 fixedly mounted on the top of the valve body 1, a fixing plate 3 fixedly mounted on the inner side wall of the mounting frame 2, a transmission assembly on the fixing plate 3, a valve disc 4 inside the valve body 1, a rod 5 above the transmission assembly, a wheel 6 fixedly mounted on the top of the rod 5, and a fixing mechanism on the mounting frame 2.

[0025] The fixing mechanism includes a connecting block 7 fixedly installed on the top of the mounting frame 2. The connecting block 7 is cylindrical. A valve cover 8 is threadedly connected to the outer wall of the connecting block 7. The outer wall of the connecting block 7 has an external thread. The inner wall of the valve cover 8 has a threaded groove that matches the external thread. A limiting component is provided between the connecting block 7 and the valve cover 8.

[0026] As can be seen from the above, the use of the fixing mechanism enables the valve cover 8 and the connecting block 7 to be connected and disassembled, thereby facilitating the limiting component to limit and fix the rod 5 and remove it. The use of the transmission component makes it easy for the rod 5 to drive the valve disc 4 to rotate. The valve body 1 is provided with a valve seat (not shown in the figure). The cooperation between the valve seat and the valve disc 4 makes it easy to adjust the opening and closing of the valve.

[0027] Specifically, regarding the aforementioned limiting component, the limiting component includes a first limiting block 9 fixedly disposed on the inner side wall of the connecting block 7, and a second limiting block 10 fixedly disposed on the top of the inner side of the valve cover 8. Limiting grooves are provided at opposite ends of the first limiting block 9 and the second limiting block 10, and the first limiting block 9 and the second limiting block 10 are both arranged in a ring.

[0028] A fixing block 11 is fixedly installed on the outer wall of the rod body 5. The top and bottom of the fixing block 11 are respectively set in two limiting grooves. Multiple balls 12 are embedded in the top and bottom of the fixing block 11. The multiple balls 12 are arranged in a ring at the top and bottom of the fixing block 11, and the outer wall is in contact with the inner wall of the corresponding limiting groove.

[0029] As can be seen from the above, after the valve cover 8 is screwed into the connecting block 7, the second limiting block 10 is pressed down, and together with the first limiting block 9, clamps the fixing block 11 in the annular limiting groove. The fixing block 11 and the rod body 5 are integrated, so the rod body 5 is axially positioned, but can still rotate freely. The balls 12 on the upper and lower end faces of the fixing block 11 form a rolling pair with the limiting groove, which changes the sliding friction into rolling friction, reduces the torque, and the valve cover 8 can be loosened by rotating it in the opposite direction. The rod body 5 and the fixing block 11 can be pulled out as a whole, realizing the online disassembly of the valve stem, eliminating the disassembly process, greatly shortening the maintenance time, and improving the valve utilization rate.

[0030] Example 2:

[0031] Regarding the aforementioned transmission components, please refer to... Figure 3 and Figure 4 As shown, the transmission assembly includes a rotating block 13 that passes through and rotatably mounted on the fixed plate 3. The rotating block 13 has a first keyway at its top and bottom, and a first key block 14 is provided inside each of the two first keyways.

[0032] The top of the first key block 14 located at the top is fixedly connected to the bottom of the rod body 5, and the bottom of the first key block 14 located at the bottom is fixedly provided with a mounting block 15. A rotating assembly is provided between the mounting block 15 and the valve disc 4.

[0033] The rotating assembly includes a short rod 17 fixedly installed at the bottom of the mounting block 15, a second key block 18 fixedly installed at the bottom of the short rod 17, a second keyway adapted to the second key block 18 is opened at the top of the valve disc 4, and the bottom of the second key block 18 is inserted into the second keyway.

[0034] The valve body 1 has a through hole at the top that is adapted to the short rod 17. A guide bushing 16 is provided inside the through hole. The guide bushing 16 is fitted onto the short rod 17. A sealing ring is provided at the top of the through hole.

[0035] As can be seen from the above, the torque of the rod 5 is transmitted to the rotating block 13 via the first key block 14. The rotating block 13 drives the mounting block 15 via another first key block 14. The mounting block 15 then synchronizes the rotational motion to the valve disc 4 via the short rod 17 and the second key block 18. The entire transmission chain is connected by keyways and key blocks, and can be disassembled and replaced. The short rod 17 is provided with a guide bushing 16 to ensure rotational coaxiality and prevent swaying. The sealing ring prevents the medium from leaking out. The rod 5 is easy to disassemble and assemble, has reliable sealing, runs smoothly, and has low maintenance costs.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable multi-functional valve stem assembly, characterized in that, include: A valve body (1) is provided with a mounting frame (2) fixedly installed on the top of the valve body (1). A fixing plate (3) is fixedly installed on the inner side wall of the mounting frame (2). A transmission assembly is provided on the fixing plate (3). A valve disc (4) is provided inside the valve body (1). A rod (5) is provided above the transmission assembly. A wheel (6) is fixedly installed on the top of the rod (5). A fixing mechanism is provided on the mounting frame (2). The fixing mechanism includes a connecting block (7) fixedly installed on the top of the mounting frame (2). The connecting block (7) is cylindrical. A valve cover (8) is threadedly connected to the outer wall of the connecting block (7). An external thread is provided on the outer wall of the connecting block (7). A threaded groove that matches the external thread is provided on the inner wall of the valve cover (8). A limiting component is provided between the connecting block (7) and the valve cover (8).

2. The detachable multi-functional valve stem assembly according to claim 1, characterized in that: The limiting component includes a first limiting block (9) fixedly disposed on the inner side wall of the connecting block (7), and a second limiting block (10) fixedly disposed on the top of the valve cover (8). The first limiting block (9) and the second limiting block (10) each have a limiting groove at one end opposite to each other. The first limiting block (9) and the second limiting block (10) are both arranged in a ring.

3. The detachable multi-functional valve stem assembly according to claim 2, characterized in that: A fixing block (11) is fixedly provided on the outer wall of the rod (5). The top and bottom of the fixing block (11) are respectively set in two limiting grooves. Multiple balls (12) are embedded in the top and bottom of the fixing block (11). The multiple balls (12) are arranged in a ring at the top and bottom of the fixing block (11) and the outer wall is in contact with the inner wall of the corresponding limiting groove.

4. The detachable multi-functional valve stem assembly according to claim 1, characterized in that: The transmission assembly includes a rotating block (13) that passes through and rotatably mounted on a fixed plate (3). The rotating block (13) has a first keyway at its top and bottom, and a first key block (14) is provided inside each of the two first keyways.

5. A detachable multi-functional valve stem assembly according to claim 4, characterized in that: The top of the first key block (14) located at the top is fixedly connected to the bottom of the rod body (5), and the bottom of the first key block (14) located at the bottom is fixedly provided with a mounting block (15). A rotating assembly is provided between the mounting block (15) and the valve disc (4).

6. The detachable multi-functional valve stem assembly according to claim 5, characterized in that: The rotating assembly includes a short rod (17) fixedly disposed at the bottom of the mounting block (15), a second key block (18) fixedly disposed at the bottom of the short rod (17), a second key groove adapted to the second key block (18) is opened at the top of the valve disc (4), and the bottom of the second key block (18) is inserted into the second key groove.

7. A detachable multi-functional valve stem assembly according to claim 6, characterized in that: The valve body (1) has a through hole at the top that is compatible with the short rod (17). A guide bushing (16) is provided inside the through hole. The guide bushing (16) is fitted on the short rod (17). A sealing ring is provided at the top of the through hole.

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