Full-open type vacuum diaphragm valve convenient to open and close

Abstract

The utility model relates to the technical field of vacuum diaphragm valves, and discloses a full-open type vacuum diaphragm valve convenient to open and close, which comprises a valve body and an upper shell, an opening and closing mechanism is arranged in the valve body, the opening and closing mechanism comprises a diaphragm piece, a connecting plate, a mounting rod, a limiting plate and a limiting rod, the top of the diaphragm piece is fixedly connected with the bottom of the connecting plate, and the top of the diaphragm piece is fixedly connected with the upper shell. The top of the connecting plate is fixedly connected with the bottom of a mounting rod, the top of the mounting rod is in extrusion contact with the bottom of a limiting plate, the inner wall of the limiting plate is slidably connected with the outer wall of the limiting rod, a pulling plate is fixedly mounted at one end of the limiting rod, and a moving plate is fixedly mounted at the top of the limiting plate. The problem that the vacuum diaphragm valve is prone to air leakage in use due to long-time use is solved, long opening and closing time is avoided, opening and closing are more convenient, and the diaphragm can be replaced, so that the use efficiency of the vacuum diaphragm valve can be improved, and an operator can use the vacuum diaphragm valve more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum diaphragm valves, in particular to a fully open vacuum diaphragm valve which is convenient to open and close. Background Art

[0002] The vacuum diaphragm valve uses the valve stem to directly press the rubber membrane onto the valve seat to cut off or connect the vacuum system. The connection forms used include slip-on flange connection, quick-release flange connection, and welding connection. The welding connection is further divided into welding type I connection and welding type II connection. The working medium applicable to the valve is air and non-corrosive gas.

[0003] When the existing vacuum diaphragm valve is in use, the vacuum enters the airbag to deform and compress the airbag to open and close the valve. However, long-term use will cause the vacuum diaphragm valve to leak easily, take a long time to open and close, and be inconvenient to open and close. Utility Model Content

[0004] The utility model aims to provide a fully open vacuum diaphragm valve which is convenient to open and close, and solves the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fully open vacuum diaphragm valve that is convenient to open and close, comprising a valve body and an upper shell, an opening and closing mechanism is arranged inside the valve body, the opening and closing mechanism comprises a diaphragm, a connecting plate, a mounting rod, a limit plate, and a limit rod, the top of the diaphragm is fixedly connected to the bottom of the connecting plate, the top of the connecting plate is fixedly connected to the bottom of the mounting rod, the top of the mounting rod is in extrusion contact with the bottom of the limit plate, the inner wall of the limit plate is slidably connected to the outer wall of the limit rod, a pull plate is fixedly installed at one end of the limit rod, and a movable plate is fixedly installed on the top of the limit plate;

[0006] A disassembly and assembly mechanism is arranged inside the valve body.

[0007] Preferably, the disassembly and assembly mechanism includes mounting plate 1, mounting plate 2, sealing ring 1, sealing ring 2, and fixing bolts. The bottom of mounting plate 1 is fixedly connected to the top of the valve, the top of mounting plate 2 is fixedly connected to the bottom of the upper shell body, the top of mounting plate 1 is fixedly connected to the bottom of sealing ring 1, the bottom of mounting plate 2 is fixedly connected to the top of sealing ring 2, and mounting plate 1 and mounting plate 2 are threadedly connected via fixing bolts.

[0008] Preferably, a spring 1 is fixedly installed between the top of the movable plate and the inner wall of the upper shell, and the movable plate is circular in shape.

[0009] Preferably, the shape of the connecting plate is arc-shaped, the number of the connecting plates is two, and the connecting plates are symmetrically distributed at two ends of the top of the diaphragm.

[0010] Preferably, the mounting rod and the outer wall of the limit plate are provided with a limit groove, the outer wall of the limit rod is slidably connected to the inner wall of the limit groove, the diameter of the limit groove is the same as the diameter of the limit rod, and a spring 2 is fixedly installed between one side of the pull plate and one side of the limit plate, so that the diaphragm can be disassembled and assembled.

[0011] Preferably, the shapes of the mounting plate 1 and the mounting plate 2 are both circular, and the materials of the sealing ring 1 and the sealing ring 2 are both rubber materials, thereby increasing the sealing between the mounting plate 1 and the mounting plate 2.

[0012] Preferably, the number of the fixing bolts is six, and the fixing bolts are sequentially distributed on the surfaces of the mounting plate 1 and the mounting plate 2, so that the mounting plate 1 and the mounting plate 2 can be threadedly connected and can be assembled and disassembled.

[0013] The utility model provides a fully open vacuum diaphragm valve that is easy to open and close. The fully open vacuum diaphragm valve that is easy to open and close has the following beneficial effects:

[0014] (1) In the utility model: the fully open vacuum diaphragm valve that is easy to open and close can work better through the opening and closing mechanism installed inside the valve body, solves the problem that the vacuum diaphragm valve is prone to leakage due to long-term use, avoids long opening and closing time, and is more convenient to open and close;

[0015] (2) In the utility model: the fully open vacuum diaphragm valve which is easy to open and close can replace the diaphragm through the disassembly and assembly mechanism installed inside the valve body, thereby improving the use efficiency of the vacuum diaphragm valve, making it more convenient for operators to use and improving the convenience of the vacuum diaphragm valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the device of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the device of the utility model;

[0018] Figure 3 The structure diagram of the opening and closing mechanism of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 4 The structure diagram of the opening and closing mechanism of the utility model is shown in FIG. Figure 2 .

[0020] In the figure: valve body 1, upper shell 2, opening and closing mechanism 3, diaphragm 301, connecting plate 302, mounting rod 303, limiting plate 304, limiting rod 305, pulling plate 306, moving plate 307, disassembly and assembly mechanism 4, mounting plate 1 401, mounting plate 2 402, sealing ring 1 403, sealing ring 2 404, fixing bolt 405. DETAILED DESCRIPTION

[0021] Embodiment 1:

[0022] like Figure 1-4 As shown, the utility model provides a technical solution: a fully open vacuum diaphragm valve that is easy to open and close, including a valve body 1 and an upper shell 2. An opening and closing mechanism 3 is arranged inside the valve body 1. The opening and closing mechanism 3 includes a diaphragm sheet 301, a connecting plate 302, a mounting rod 303, a limiting plate 304, and a limiting rod 305. The top of the diaphragm sheet 301 is fixedly connected to the bottom of the connecting plate 302, the top of the connecting plate 302 is fixedly connected to the bottom of the mounting rod 303, the top of the mounting rod 303 is in extrusion contact with the bottom of the limiting plate 304, the inner wall of the limiting plate 304 is slidably connected to the outer wall of the limiting rod 305, a pull plate 306 is fixedly installed at one end of the limiting rod 305, and a movable plate 307 is fixedly installed on the top of the limiting plate 304;

[0023] A spring 1 is fixedly installed between the top of the moving plate 307 and the inner wall of the upper shell 2, and the shape of the moving plate 307 is circular;

[0024] The shape of the connecting plate 302 is arc-shaped, and there are two connecting plates 302 , which are symmetrically distributed at the two ends of the top of the diaphragm sheet 301 ;

[0025] The outer walls of the mounting rod 303 and the limiting plate 304 are provided with limiting grooves, the outer wall of the limiting rod 305 is slidably connected to the inner wall of the limiting groove, the diameter of the limiting groove is the same as the diameter of the limiting rod 305, and a spring 2 is fixedly installed between one side of the pulling plate 306 and one side of the limiting plate 304, so that the diaphragm 301 can be disassembled;

[0026] Embodiment 2:

[0027] Based on the first embodiment, Figure 1-4 As shown, the utility model provides a technical solution: the disassembly mechanism 4 includes a mounting plate 1 401, a mounting plate 2 402, a sealing ring 1 403, a sealing ring 2 404, and a fixing bolt 405. The bottom of the mounting plate 1 401 is fixedly connected to the top of the valve 1, the top of the mounting plate 2 402 is fixedly connected to the bottom of the upper shell 2, the top of the mounting plate 1 401 is fixedly connected to the bottom of the sealing ring 1 403, the bottom of the mounting plate 2 402 is fixedly connected to the top of the sealing ring 2 404, and the mounting plate 1 401 and the mounting plate 2 402 are threadedly connected by the fixing bolt 405;

[0028] The shapes of the mounting plate 1 401 and the mounting plate 2 402 are both circular, and the materials of the sealing ring 1 403 and the sealing ring 2 404 are both rubber materials, so as to increase the sealing performance between the mounting plate 1 401 and the mounting plate 2 402;

[0029] The number of the fixing bolts 405 is six, and the fixing bolts 405 are sequentially distributed on the surfaces of the mounting plate 1 401 and the mounting plate 2 402 , so that the mounting plate 1 401 and the mounting plate 2 402 can be threadedly connected and can be assembled and disassembled.

[0030] When the fully open vacuum diaphragm valve which is easy to open and close is in use, the operator connects the valve body 1 with the upper shell body 2 through the mounting plate 1 401 and the mounting plate 2 402, connects the mounting plate 1 401 with the mounting plate 2 402 by rotating the fixing bolt 405, and increases the sealing performance between the mounting plate 1 401 and the mounting plate 2 402 by installing the sealing ring 1 403 and the sealing ring 2 404, connects the fully open vacuum diaphragm valve with the outside and works, and when it is necessary to open and close, the diaphragm 301 is driven to move by the change of air pressure inside the valve body 1, the connecting plate 302 is driven to move by the movement of the diaphragm 301, the mounting rod 303 is driven to move by the connecting plate 302, the limiting plate 304 is driven to move by the movement of the mounting rod 303, the moving plate 307 is driven by the movement of the limiting plate 304, and the squeezing spring 1 is moved by the moving plate 307, and when it is necessary to reset, the diaphragm 301 is driven to move by the change of air pressure inside the valve body 1, the connecting plate 302 is driven to move by the movement of the diaphragm 301, the mounting rod 303 is driven to move by the movement of the mounting rod 303, the limiting plate 304 is driven to move, the moving plate 307 is driven by the moving plate 307, and the squeezing spring 1 is moved by the moving plate 307. The spring can be reset as soon as it rebounds, so that it is convenient to open and close. When the diaphragm 301 is damaged after long-term use and needs to be replaced, the mounting plate 1 401 is separated from the mounting plate 2 402 by rotating the fixing bolt 405. At this time, the pull plate 306 is pulled to move and the limit rod 305 is moved. The pull plate 306 moves to squeeze the spring 2. As the limit rod 305 moves, the limit plate 304 and the mounting rod 303 are pulled out, so that the diaphragm 301 can be replaced. When installing, just repeat the above steps, and finally it can work better, solve the problem that the vacuum diaphragm valve is prone to leakage due to long-term use, avoid long opening and closing time, and make opening and closing more convenient, so that the diaphragm can be replaced, thereby improving the use efficiency of the vacuum diaphragm valve, making it more convenient for operators to use, and improving the convenience of the vacuum diaphragm valve.

Claims

1. A fully open vacuum diaphragm valve that is easy to open and close, comprising a valve body and an upper shell (2), characterized in that: An opening and closing mechanism (3) is arranged inside the valve body, and the opening and closing mechanism (3) comprises a diaphragm (301), a connecting plate (302), a mounting rod (303), a limiting plate (304), and a limiting rod (305); the top of the diaphragm (301) is fixedly connected to the bottom of the connecting plate (302); the top of the connecting plate (302) is fixedly connected to the bottom of the mounting rod (303); the top of the mounting rod (303) is in extrusion contact with the bottom of the limiting plate (304); the inner wall of the limiting plate (304) is slidably connected to the outer wall of the limiting rod (305); a pulling plate (306) is fixedly installed at one end of the limiting rod (305); and a moving plate (307) is fixedly installed at the top of the limiting plate (304); A disassembly and assembly mechanism (4) is arranged inside the valve body.

2. A fully open vacuum diaphragm valve that is easy to open and close according to claim 1, characterized in that: The disassembly and assembly mechanism (4) comprises a mounting plate 1 (401), a mounting plate 2 (402), a sealing ring 1 (403), a sealing ring 2 (404), and a fixing bolt (405); the bottom of the mounting plate 1 (401) is fixedly connected to the top of the valve, the top of the mounting plate 2 (402) is fixedly connected to the bottom of the upper shell (2), the top of the mounting plate 1 (401) is fixedly connected to the bottom of the sealing ring 1 (403), the bottom of the mounting plate 2 (402) is fixedly connected to the top of the sealing ring 2 (404), and the mounting plate 1 (401) and the mounting plate 2 (402) are threadedly connected via a fixing bolt (405).

3. The fully open vacuum diaphragm valve that is easy to open and close according to claim 1, characterized in that: A spring 1 is fixedly installed between the top of the movable plate (307) and the inner wall of the upper shell (2); the movable plate (307) is circular in shape.

4. The fully open vacuum diaphragm valve that is easy to open and close according to claim 1, characterized in that: The connecting plate (302) is in an arc shape, and there are two connecting plates (302). The connecting plates (302) are symmetrically distributed at two ends of the top of the diaphragm (301).

5. The fully open vacuum diaphragm valve that is easy to open and close according to claim 1, characterized in that: The outer walls of the installation rod (303) and the limiting plate (304) are both provided with limiting grooves, the outer wall of the limiting rod (305) is slidably connected to the inner wall of the limiting groove, the diameter of the limiting groove is the same as the diameter of the limiting rod (305), and a second spring is fixedly installed between one side of the pulling plate (306) and one side of the limiting plate (304).

6. The fully open vacuum diaphragm valve that is easy to open and close according to claim 2, characterized in that: The shapes of the mounting plate 1 (401) and the mounting plate 2 (402) are both circular, and the materials of the sealing ring 1 (403) and the sealing ring 2 (404) are both rubber materials.

7. The fully open vacuum diaphragm valve that is easy to open and close according to claim 2, characterized in that: The number of the fixing bolts (405) is six, and the fixing bolts (405) are sequentially distributed on the surfaces of the first mounting plate (401) and the second mounting plate (402).

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