Diaphragm valve opening degree adjusting device

Abstract

The utility model discloses a diaphragm valve opening degree adjusting device, which belongs to the technical field of diaphragm valves and comprises a valve body, a valve seat is arranged at the top of the valve body, a valve cover is fixedly mounted at the top of the valve seat, an operation groove is arranged on the top surface of the valve cover, a protective box is arranged at the top of the valve cover, clamping seats are respectively arranged on two sides of the protective box, and the clamping seats are fixedly mounted on the valve cover. The top end of the protection box is sleeved with a protection cover, clamping hooks are arranged on the bottom faces of the two sides of the protection cover, the bottom ends of the two clamping hooks are arranged at the bottom of the clamping base in a sleeving mode, and fixing mechanisms are arranged in an inner cavity of the operation groove and an inner cavity of the protection box. According to the utility model, the protection box is arranged at the top of the valve cover, the protection cover is arranged on the protection box through the matching of the clamping hook and the clamping seat, and the protection box and the protection cover are used for protecting the turntable, the screw rod and the fixing mechanism, so that the problem that the turntable, the screw rod and the fixing mechanism are influenced by the external environment is avoided; and the practicability of the diaphragm valve opening degree adjusting device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm valves, and more specifically to a diaphragm valve opening adjustment device. Background Art

[0002] A diaphragm valve is a globe valve that uses a diaphragm as a start and stop element to seal the flow path, cut off the flow, and separate the valve body cavity from the valve cover cavity. The diaphragm is usually made of elastic, corrosion-resistant, and non-permeable materials such as rubber and plastic. The valve body is often made of plastic, fiberglass, ceramic, or metal-lined rubber materials. It has a simple structure, good sealing and corrosion resistance, and low fluid resistance. It is used for low-pressure, low-temperature, highly corrosive media and media containing suspended matter.

[0003] After searching, the utility model patent with publication number CN220688107U discloses a diaphragm valve opening adjustment device, including a connecting pipe, a socket and a plug rod, a valve body is installed on the top of the connecting pipe, and a connecting hole is opened inside the top of the valve body, a threaded rod is provided inside the connecting hole, a diaphragm is installed inside the valve body, and a handwheel is installed on the top of the threaded rod, a plurality of sockets are opened inside the outer side of the top of the valve body, and a plurality of mounting grooves are installed inside the handwheel, a slider is provided inside the mounting groove, and a connecting rod is installed at the bottom end of the slider; this patent moves the slider downward inside the mounting groove under the reaction force of the fixed spring, pushes the connecting rod through the slider, causes the connecting rod to push the movable ring, causes the movable ring to drive the plug rod, causes the plug rod to be inserted into the inside of the socket, and fixes the handwheel. This structure realizes the fixation of the hand wheel to prevent the opening from being affected by accidental touch. However, the above patent still has the following shortcomings: the valve opening adjustment knob is directly placed on the outside, which may affect the smoothness of the opening adjustment due to external dust, humidity, etc. In addition, although the hand wheel can be fixed to prevent accidental touch, the opening needs to be adjusted by pulling the handle upward while turning it, which is not convenient. For this reason, we propose a diaphragm valve opening adjustment device. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a diaphragm valve opening adjustment device.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A diaphragm valve opening adjustment device comprises a valve body, a valve seat is provided on the top of the valve body, a valve cover is fixedly installed on the top of the valve seat, an operating groove is provided on the top surface of the valve cover, a protective box is provided on the top of the valve cover, and a clamping seat is provided on both sides of the protective box. The top end of the protective box is sleeved with a protective cover, and the bottom surfaces on both sides of the protective cover are provided with hooks, and the bottom ends of the two hooks are sleeved to the bottom of the clamping seat, and the inner cavity of the operating groove and the protective box are provided with a fixing mechanism, a screw is threadedly installed on the valve cover, the bottom end of the screw extends to the inner cavity of the valve seat and is rotatably connected to a diaphragm, the side of the diaphragm is connected to the inner wall of the valve seat, the top end of the screw passes through the operating groove and extends to the inner cavity of the protective box and is fixedly connected to a turntable, and the top surface of the turntable is provided with a plurality of holes.

[0007] As a preferred solution of the present utility model, the fixing mechanism includes supports fixedly connected to the operating groove and the inner wall of the protective box respectively, a threaded column is rotatably connected between the two supports, the outer side of the threaded column is threadedly sleeved with a lifting seat, one end of the lifting seat extends to the top of the turntable and is fixedly connected to a pin, the bottom end of the pin is movably sleeved into the inner cavity of a socket, and the top end of the threaded column extends to the top of the support and is fixedly connected to a trigger plate.

[0008] As a preferred solution of the present invention, a sliding rod is rotatably connected between the two supports, and the sliding rod is movably sleeved with the lifting seat.

[0009] As a preferred solution of the present invention, the outer side surface of the protection box and the inner wall of the protection cover are in contact with each other.

[0010] As a preferred solution of the present invention, a pull block is fixedly connected to the top surface of the turntable.

[0011] As a preferred solution of the present invention, the outer diameter of the pin is equal to the inner diameter of the socket.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) In the present invention, a protective box is provided on the top of the valve cover, and a protective cover is installed on the protective box by means of a hook and a seat. The protective box and the protective cover are used to protect the turntable, the screw and the fixing mechanism, thereby preventing the turntable, the screw and the fixing mechanism from being affected by the external environment, thereby improving the practicality of the diaphragm valve opening adjustment device.

[0014] (2) In the present invention, a plurality of insertion holes are provided on the turntable. When the turntable drives the screw to rotate to adjust the diaphragm, the threaded fit between the threaded column and the lifting seat drives the pin to be inserted into a insertion hole on the turntable, thereby fixing the turntable, the screw and the diaphragm. When adjusting the opening of the diaphragm valve, there is no need to pull the handle upward while rotating it, which improves the convenience of the diaphragm valve opening adjustment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic cross-sectional view of the entirety of the present invention;

[0017] Figure 3 This is a cross-sectional schematic diagram of the valve cover of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the protective cover of the utility model;

[0019] Figure 5 It is a structural diagram of the lifting seat of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Valve body; 2. Valve seat; 3. Valve cover; 4. Operating slot; 5. Protective box; 6. Screw; 7. Diaphragm; 8. Turntable; 9. Pull block; 10. Socket; 11. Clamping seat; 12. Protective cover; 13. Hook; 14. Fixing mechanism; 15. Support; 16. Threaded column; 17. Lifting seat; 18. Latch; 19. Pull plate; 20. Sliding rod. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Example:

[0026] See also Figure 1-5 , a diaphragm valve opening adjustment device includes a valve body 1, a valve seat 2 is provided on the top of the valve body 1, a valve cover 3 is fixedly installed on the top of the valve seat 2, an operating groove 4 is provided on the top surface of the valve cover 3, a protective box 5 is provided on the top of the valve cover 3, and a clamping seat 11 is provided on both sides of the protective box 5. The top of the protective box 5 is sleeved with a protective cover 12, and the bottom surfaces of both sides of the protective cover 12 are provided with hooks 13, and the bottom ends of the two hooks 13 are sleeved to the bottom of the clamping seat 11, and the inner cavity of the operating groove 4 and the protective box 5 is provided with a fixing mechanism 14, a screw 6 is threadedly installed on the valve cover 3, the bottom end of the screw 6 extends to the inner cavity of the valve seat 2 and is rotatably connected to the diaphragm 7, the side of the diaphragm 7 is connected to the inner wall of the valve seat 2, the top of the screw 6 passes through the operating groove 4 and extends to the inner cavity of the protective box 5 and is fixedly connected to a turntable 8, and a plurality of holes 10 are provided on the top surface of the turntable 8.

[0027] In this embodiment, the protective cover 12 is installed on the top of the protective box 5 through the cooperation of the clamping seat 11 and the hook 13, and the protective box 5 and the protective cover 12 are used to protect the turntable 8 and the fixing mechanism 14.

[0028] For details, please refer to Figure 2 、 Figure 3 and Figure 5 The fixing mechanism 14 includes supports 15 respectively fixedly connected to the inner walls of the operating slot 4 and the protective box 5. A threaded column 16 is rotatably connected between the two supports 15. The outer side of the threaded column 16 is threadedly sleeved with a lifting seat 17. One end of the lifting seat 17 extends to the top of the turntable 8 and is fixedly connected to a pin 18. The bottom end of the pin 18 is movably sleeved into the inner cavity of a socket 10. The top of the threaded column 16 extends to the top of the support 15 and is fixedly connected to a trigger plate 19.

[0029] In this embodiment, the threaded engagement between the threaded column 16 and the lifting seat 17 drives the latch 18 to be inserted into the insertion hole 10 , thereby fixing the turntable 8 , the screw rod 6 and the diaphragm 7 .

[0030] For details, please refer to Figure 3 A slide rod 20 is rotatably connected between the two supports 15 , and the slide rod 20 and the lifting seat 17 are movably connected.

[0031] In this embodiment, the lifting seat 17 is limited by the movable sleeve connection between the sliding rod 20 and the lifting seat 17 , so that the lifting seat 17 can only move along the axial direction of the threaded column 16 .

[0032] For details, please refer to Figure 1 , the outer side surface of the protective box 5 and the inner wall of the protective cover 12 are in contact with each other.

[0033] In this embodiment, the stability of the protective cover 12 being mounted on the top of the protective box 5 is ensured.

[0034] For details, please refer to Figure 3 The top surface of the turntable 8 is fixedly connected with a pull block 9.

[0035] In this embodiment, the turntable 8 and the screw 6 are rotated by pulling the pull block 9, and the diaphragm 7 is driven to open and close the valve body 1 through the threaded engagement between the screw 6 and the valve cover 3.

[0036] For details, please refer to Figure 3 and Figure 5 , the outer diameter of the pin 18 is equal to the inner diameter of the socket 10.

[0037] In this embodiment, the stability of the insertion of the plug 18 into the insertion hole 10 is ensured.

[0038] Working principle: When the opening of the diaphragm valve needs to be adjusted, first pull the hook 13 to disengage its bottom end from the bottom of the base 11, thereby removing the protective cover 12 from the top of the protective box 5. In addition, turn the trigger plate 19 to drive the threaded column 16 to rotate, and the threaded fit between the threaded column 16 and the lifting seat 17 drives the lifting seat 17 and the latch 18 to move upward, so that the latch 18 disengages from a socket 10 on the turntable 8, thereby releasing the fixation of the turntable 8. Then, hold the trigger block 9 to drive the turntable 8 and the screw 6 to rotate, and the threaded fit between the screw 6 and the valve cover 3 drives the diaphragm 7 to move up or down. The valve body 1 is opened or closed by rotating the pull plate 19 in the opposite direction, and the threaded column 16 is reversed. The lifting seat 17 and the latch 18 are driven downward by the threaded cooperation between the threaded column 16 and the lifting seat 17, so that the latch 18 is inserted into another socket 10 on the turntable 8, thereby fixing the turntable 8, the screw 6 and the diaphragm 7 again. Finally, the protective cover 12 is put back on the top of the protective box 5 so that the hook 13 on the side of the protective cover 12 is stuck to the outside of the seat 11, so that the protective box 5 and the protective cover 12 can be used to protect the turntable 8, the screw 6 and the fixing mechanism 14.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A diaphragm valve opening adjustment device, comprising a valve body (1), characterized in that: A valve seat (2) is provided on the top of the valve body (1), a valve cover (3) is fixedly installed on the top of the valve seat (2), an operating groove (4) is provided on the top surface of the valve cover (3), a protection box (5) is provided on the top of the valve cover (3), a clamping seat (11) is provided on both sides of the protection box (5), a protection cover (12) is provided on the top of the protection box (5), and hooks (13) are provided on the bottom surfaces of both sides of the protection cover (12), and the bottom ends of the two hooks (13) are both sleeved to the clamping seat (11). At the bottom, the inner cavity of the operating groove (4) and the protective box (5) is provided with a fixing mechanism (14), the valve cover (3) is threadedly mounted with a screw rod (6), the bottom end of the screw rod (6) extends to the inner cavity of the valve seat (2) and is rotatably connected to a diaphragm (7), the side of the diaphragm (7) is connected to the inner wall of the valve seat (2), the top end of the screw rod (6) passes through the operating groove (4) and extends to the inner cavity of the protective box (5) and is fixedly connected to a turntable (8), and a plurality of jacks (10) are provided on the top surface of the turntable (8).

2. The diaphragm valve opening adjustment device according to claim 1, characterized in that: The fixing mechanism (14) includes supports (15) respectively fixedly connected to the inner wall of the operating groove (4) and the protective box (5), a threaded column (16) is rotatably connected between the two supports (15), the outer side of the threaded column (16) is threadedly sleeved with a lifting seat (17), one end of the lifting seat (17) extends to the top of the turntable (8) and is fixedly connected to a latch (18), the bottom end of the latch (18) is movably sleeved to the inner cavity of a socket (10), the top end of the threaded column (16) extends to the top of the support (15) and is fixedly connected to a trigger plate (19).

3. The diaphragm valve opening adjustment device according to claim 2, characterized in that: A slide bar (20) is rotatably connected between the two supports (15), and the slide bar (20) and the lifting seat (17) are movably sleeved.

4. The diaphragm valve opening adjustment device according to claim 1, characterized in that: The outer side surface of the protection box (5) and the inner wall of the protection cover (12) are in contact with each other.

5. The diaphragm valve opening adjustment device according to claim 1, characterized in that: The top surface of the rotating disk (8) is fixedly connected with a pull block (9).

6. The diaphragm valve opening adjustment device according to claim 2, characterized in that: The outer diameter of the latch (18) is equal to the inner diameter of the insertion hole (10).

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