Pneumatic butterfly valve convenient to install and maintain

Abstract

The utility model relates to the technical field of pneumatic butterfly valves, in particular to a pneumatic butterfly valve convenient to install and maintain. The clamping device comprises a base, a working block is fixedly connected to the front face of the base, a connecting pipe is fixedly connected to the front face of the working block, a clamping assembly is arranged at one end of the connecting pipe, a working cavity is formed in the base, circular plates are arranged on the two sides of the inner wall of the working cavity, and sealing rings are fixedly connected to the arc faces of the circular plates. Racks are fixedly connected to one side of the circular plate, a gear is arranged between the two racks, and the gear and the racks are meshed with each other, so that the problems that due to the fact that materials in a pipeline wash the valve plate of the butterfly valve, the abrasion degree of a sealing ring between the valve plate and the pipeline is high, and due to the fact that a base of an existing butterfly valve is mostly of a fixed structure, the abrasion degree is high are solved. The problems that due to the fact that the valve plate is difficult to disassemble, the whole valve needs to be replaced when a sealing ring on the valve plate is abraded or damaged, and the use cost of the valve is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic butterfly valves, in particular to a pneumatic butterfly valve which is easy to install and maintain. Background Art

[0002] The pneumatic butterfly valve is composed of a pneumatic actuator and a butterfly valve. The pneumatic butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve stem to open and close to achieve the enabling action. It is mainly used as a shut-off valve. The pneumatic butterfly valve is mainly composed of a base, a working chamber, two circular plates, two racks, a rotating shaft, a gear, a working block, a connecting pipe 1, a connecting pipe 2, a pipeline, a valve plate and a connecting pipe of an external air pump. When it is necessary to control the rotation of the valve plate, connect the two sides of the pipeline to the external pipe, fix the air pump and the connecting pipe, so that the air enters the working block and blows into the working chamber of the base through the connecting pipe 1, thereby pushing the circular plates on both sides to move, and then driving the racks on both sides to move, so that the gears rotate, so that the rotating shaft rotates, and the valve plate inside the pipeline is controlled to rotate, and the control valve on the working block is changed, so that the air generated by the air pump enters the connecting pipe 2, thereby pushing the circular plates on both sides to move closer to each other, so that the valve plate connected to the rotating shaft rotates under the action of the rack and gear.

[0003] The inventor discovered in his daily work that when a pneumatic butterfly valve is in use, the material in the pipeline scours the butterfly valve plate, causing a high degree of wear on the sealing ring between the valve plate and the pipeline. Since the base of existing butterfly valves is mostly a fixed structure, the valve plate is difficult to disassemble, which results in the need to replace the valve as a whole when the sealing ring on the valve plate is worn or damaged, resulting in a high cost of using the valve. Utility Model Content

[0004] The utility model aims to solve the problem that, in actual use, the sealing ring on the valve plate of the butterfly valve is eroded by the material in the pipeline, resulting in a high degree of wear on the sealing ring between the valve plate and the pipeline, and since the base of the existing butterfly valve is mostly a fixed structure, the valve plate is difficult to disassemble, and when the sealing ring on the valve plate is worn or damaged, the valve needs to be replaced as a whole, which leads to a high cost of using the valve. A pneumatic butterfly valve that is easy to install and maintain is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic butterfly valve which is easy to install and maintain, comprising a base, a working block is fixedly connected to the front of the base, a connecting pipe is fixedly connected to the front of the working block, a clamping assembly is arranged at one end of the connecting pipe, a working cavity is opened inside the base, circular plates are arranged on both sides of the inner wall of the working cavity, a sealing ring is fixedly connected to the arc surface of the circular plate, a rack is fixedly connected to one side of the circular plate, a gear is arranged between the two racks, the gear and the rack are meshed with each other, connecting pipe 1 and connecting pipe 2 and a control valve are arranged inside the working block, and the lower end of the gear A rotating shaft is fixedly connected, the rotating shaft and the base are rotatably connected, the lower end of the base is fixedly connected to a pipe, the inner wall of the pipe is provided with a valve plate, the arc surface of the valve plate is provided with a sealing ring, the arc surface of the pipe is provided with a replacement component, the replacement component includes a mounting groove opened on the arc surface of the pipe, the inner wall of the mounting groove is provided with a mounting block, the surface of the mounting block is provided with a sealing ring, the arc surface of the valve plate is provided with a fixing groove, the arc surface of the rotating shaft is provided with a through hole, both sides of the through hole are slidably connected with pins, the pins are inserted into the valve plate, a pull rope is fixedly connected between the two pins, and the pull rope passes through the rotating shaft and the base.

[0006] The effect achieved by the above components is: by setting up a replacement component, when conveniently replacing the valve plate, drag the mounting block to separate it from the mounting groove, seal it with the sealing ring on the surface of the mounting block, pull the pull rope to move the pin in the through hole to separate it from the valve plate, thereby dragging the valve plate to separate the rotating shaft and the fixed groove, and then install the new valve plate to achieve convenient replacement of the valve plate.

[0007] Preferably, a magnetic sheet is fixedly connected to one side of the two latches, and the two magnetic sheets repel each other when they are close to each other.

[0008] The effect achieved by the above components is that the latch is reset by arranging the magnetic sheets on both sides.

[0009] Preferably, clamping blocks are fixedly connected to both ends of the two mounting blocks, clamping grooves are provided on both sides of the inner wall of the mounting groove, and protrusions are provided on the surface of the clamping blocks.

[0010] The effect achieved by the above components is: the installation block is limited by setting the clamping block and the clamping slot.

[0011] Preferably, a circular groove is provided on the right side of the clamping block, and a positioning rod is slidably connected to the inner wall of the circular groove, and the positioning rod is inserted into the pipeline.

[0012] The effect achieved by the above components is: the positioning rod in the circular groove is clamped into the pipeline, and the installation block is further limited.

[0013] Preferably, a spring is fixedly connected to one side of the positioning rod, and the other end of the spring is fixed to a clamping block.

[0014] The effect achieved by the above components is: the positioning rod is reset by setting a spring.

[0015] Preferably, a pull wire is fixedly connected to one side of the positioning rod, and the pull wire passes through the clamping block and the mounting block.

[0016] The effect achieved by the above components is: pulling the pull wire causes the positioning rod to move.

[0017] Preferably, the clamping assembly comprises an arc-shaped block fixedly connected to both sides of one end of the connecting pipe, and a screw rod is threadedly inserted into the outer arc surface of the arc-shaped block.

[0018] The effect achieved by the above components is: when the connecting pipe is connected to the external pipeline, the screw rod on the arc block is twisted to squeeze the external pipeline, thereby limiting the external pipeline.

[0019] Preferably, the inner arc surface of the arc block is provided with a rubber pad, and the rubber pad is rotatably connected to the screw rod.

[0020] The effect achieved by the above components is: by arranging the rubber pad, the friction between the screw rod and the external pipe is increased.

[0021] In summary, the beneficial effects of the utility model are:

[0022] The utility model discloses replacing a replacement component is provided, when replacing the valve plate conveniently, drag the mounting block to separate it from the mounting groove, seal it with the sealing ring on the surface of the mounting block, pull the pull rope to move the pin in the through hole to separate it from the valve plate, thereby dragging the valve plate to separate the rotating shaft from the fixed groove, and then install the new valve plate, so as to achieve convenient replacement of the valve plate, and solve the problem that the sealing ring between the valve plate and the pipeline is worn out by the material in the pipeline, and the base of the existing butterfly valve is mostly a fixed structure, which makes it difficult to disassemble the valve plate, and when the sealing ring on the valve plate is worn or damaged, the valve needs to be replaced as a whole, which leads to the problem of high cost of using the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the cross section of the base of the utility model;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the clamping assembly of the utility model;

[0026] Figure 4It is a three-dimensional structural schematic diagram of the replacement component of the utility model.

[0027] Legend: 1. Base; 2. Replacement assembly; 3. Clamping assembly; 4. Connecting pipe; 5. Pipe; 6. Working chamber; 7. Working block; 8. Connecting pipe one; 9. Connecting pipe two; 10. Rack; 11. Round plate; 12. Gear; 13. Rotating shaft; 14. Valve plate; 21. Mounting groove; 22. Mounting block; 23. Fixing groove; 24. Through hole; 25. Latch; 26. Pull rope; 27. Magnetic sheet; 28. Card slot; 29. ​​Card block; 210. Circular groove; 211. Positioning rod; 212. Spring; 213. Pull wire; 31. Arc block; 32. Rubber pad; 33. Screw rod. DETAILED DESCRIPTION

[0028] Reference Figure 1 and Figure 2 as well as Figure 4 As shown, the utility model provides a technical solution: a pneumatic butterfly valve that is easy to install and maintain includes a base 1, a working block 7 is fixedly connected to the front of the base 1, a connecting pipe 4 is fixedly connected to the front of the working block 7, a clamping assembly 3 is arranged at one end of the connecting pipe 4, a working chamber 6 is opened inside the base 1, circular plates 11 are arranged on both sides of the inner wall of the working chamber 6, a sealing ring is fixedly connected to the circular arc surface of the circular plate 11, a rack 10 is fixedly connected to one side of the circular plate 11, a gear 12 is arranged between the two racks 10, the gear 12 and the rack 10 are meshed with each other, a connecting pipe 8 and a connecting pipe 2 9 and a control valve are arranged inside the working block 7, a rotating shaft 13 is fixedly connected to the lower end of the gear 12, the rotating shaft 13 and the base 1 are rotatably connected, a pipeline 5 is fixedly connected to the lower end of the base 1, a valve plate 14 is arranged on the inner wall of the pipeline 5, a sealing ring is arranged on the circular arc surface of the valve plate 14, and a replacement assembly 2 is arranged on the circular arc surface of the pipeline 5.

[0029] The specific settings and functions of the replacement component 2 and the clamping component 3 are described in detail below.

[0030] Reference Figure 4As shown, in this embodiment: the replacement component 2 includes a mounting groove 21 provided on the arc surface of the pipeline 5, a mounting block 22 is provided on the inner wall of the mounting groove 21, a sealing ring is provided on the surface of the mounting block 22, a fixing groove 23 is provided on the arc surface of the valve plate 14, a through hole 24 is provided on the arc surface of the rotating shaft 13, and latches 25 are slidably connected on both sides of the through hole 24, the latches 25 are inserted into the valve plate 14, and a pull rope 26 is fixedly connected between the two latches 25, and the pull rope 26 passes through the rotating shaft 13 and the base Seat 1, by setting replacement component 2, when conveniently replacing valve plate 14, drag mounting block 22 to separate from mounting groove 21, seal through sealing ring on the surface of mounting block 22, pull pull rope 26, make latch 25 in through hole 24 move, make it separate from valve plate 14, thereby drag valve plate 14, make rotating shaft 13 and fixing groove 23 separate, then install new valve plate 14, achieve convenient replacement of valve plate 14, one side of two latches 25 is fixedly connected with magnetic sheet 27, two magnetic sheets 27 repel each other when close, by setting magnetic sheets 27 on both sides, latch 25 is reset, two ends of two mounting blocks 22 are fixedly connected with card block 29, card groove 28 is provided on both sides of inner wall of mounting groove 21, the surface of card block 29 is provided with protrusion, by setting card block 29 and card groove 28, mounting block 22 is limited, right side of card block 29 is provided with circular groove 210, inner wall of circular groove 210 is slidably connected with positioning rod 211, positioning rod 2 11 is inserted into the pipe 5, and the positioning rod 211 in the circular groove 210 is stuck into the pipe 5, and the mounting block 22 is further limited. One side of the positioning rod 211 is fixedly connected with a spring 212. By setting the spring 212, the positioning rod 211 is reset. The other end of the spring 212 is fixed to the block 29. One side of the positioning rod 211 is fixedly connected with a pull wire 213. The pull wire 213 passes through the block 29 and the mounting block 22. Pulling the pull wire 213 causes the positioning rod 211 to move.

[0031] Reference Figure 3 As shown, in this embodiment: the clamping assembly 3 includes an arc block 31 fixedly connected to both sides of one end of the connecting pipe 4, and a screw rod 33 is threadedly inserted into the outer arc surface of the arc block 31. When the connecting pipe 4 is connected to the external pipe 5, the screw rod 33 on the arc block 31 is twisted to squeeze the external pipe 5, thereby limiting the external pipe 5. A rubber pad 32 is provided on the inner arc surface of the arc block 31, and the rubber pad 32 and the screw rod 33 are rotatably connected. By providing the rubber pad 32, the friction between the screw rod 33 and the external pipe 5 is increased.

[0032] Working principle:

[0033] When it is necessary to control the rotation of the valve plate 14, connect the two sides of the pipeline 5 to the external pipe, fix the air pump and the connecting pipe 4, so that the air enters the working block 7, and is blown into the working chamber 6 of the base 1 through the connecting pipe 1 8, thereby pushing the circular plates 11 on both sides to move, so that the circular plates 11 are away from each other, thereby driving the racks 10 on both sides to move, so that the gear 12 rotates, thereby rotating the shaft 13, and controlling the rotation of the valve plate 14 inside the pipeline 5, and changing the control valve on the working block 7, so that the air generated by the air pump enters the connecting pipe 2 9, thereby pushing the circular plates 11 on both sides to move closer to each other, so that under the action of the rack 10 and the gear 12, the valve plate 14 connected to the rotating shaft 13 rotates, thereby controlling the flow of the fluid, and when conveniently replacing the valve plate 14, drag the mounting block 22 to separate it from the mounting groove 21, seal it with the sealing ring on the surface of the mounting block 22, and pull the pull The rope 26 moves the latch 25 in the through hole 24 and separates it from the valve plate 14, thereby dragging the valve plate 14 to separate the rotating shaft 13 and the fixing groove 23, and then the new valve plate 14 is installed to achieve convenient replacement of the valve plate 14, and the latch 25 is reset by setting the magnetic sheets 27 on both sides, and the mounting block 22 is limited by setting the clamping block 29 and the clamping groove 28, and the positioning rod 211 in the circular groove 210 is clamped into the pipe 5 to further limit the mounting block 22, and the positioning rod 211 is reset by setting the spring 212, and the pull wire 213 is pulled to move the positioning rod 211, and when the connecting pipe 4 is connected to the external pipe 5, the screw rod 33 on the arc block 31 is twisted to squeeze the external pipe 5, thereby limiting the external pipe 5, and the friction between the screw rod 33 and the external pipe 5 is increased by setting the rubber pad 32.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A pneumatic butterfly valve that is easy to install and maintain, comprising a base (1), characterized in that: The front side of the base (1) is fixedly connected to a working block (7), the front side of the working block (7) is fixedly connected to a connecting pipe (4), one end of the connecting pipe (4) is provided with a clamping assembly (3), a working chamber (6) is provided inside the base (1), both sides of the inner wall of the working chamber (6) are provided with circular plates (11), the arc surface of the circular plate (11) is fixedly connected to a sealing ring, one side of the circular plate (11) is fixedly connected to a rack (10), a gear (12) is provided between the two racks (10), the gear (12) and the rack (10) are meshed with each other, a connecting pipe 1 (8) and a connecting pipe 2 (9) and a control valve are provided inside the working block (7), the lower end of the gear (12) is fixedly connected to a rotating shaft (13), the rotating shaft (13) and the base (1) are rotatably connected, and the base (1) The lower end of the valve body (13) is fixedly connected to a pipe (5), the inner wall of the pipe (5) is provided with a valve plate (14), the arc surface of the valve plate (14) is provided with a sealing ring, the arc surface of the pipe (5) is provided with a replacement component (2), the replacement component (2) comprises a mounting groove (21) provided on the arc surface of the pipe (5), the inner wall of the mounting groove (21) is provided with a mounting block (22), the surface of the mounting block (22) is provided with a sealing ring, the arc surface of the valve plate (14) is provided with a fixing groove (23), the arc surface of the rotating shaft (13) is provided with a through hole (24), both sides of the through hole (24) are slidably connected with a latch (25), the latch (25) is inserted into the valve plate (14), a pull rope (26) is fixedly connected between the two latches (25), and the pull rope (26) passes through the rotating shaft (13) and the base (1).

2. The pneumatic butterfly valve that is easy to install and maintain according to claim 1 is characterized in that: A magnetic sheet (27) is fixedly connected to one side of the two latches (25), and the two magnetic sheets (27) repel each other when they are close to each other.

3. The pneumatic butterfly valve that is easy to install and maintain according to claim 2 is characterized in that: The two ends of the two installation blocks (22) are fixedly connected with clamping blocks (29), the inner walls of the installation groove (21) are provided with clamping grooves (28) on both sides, and the surface of the clamping block (29) is provided with protrusions.

4. The pneumatic butterfly valve that is easy to install and maintain according to claim 3 is characterized in that: A circular groove (210) is provided on the right side of the clamping block (29), and a positioning rod (211) is slidably connected to the inner wall of the circular groove (210), and the positioning rod (211) is inserted into the pipeline (5).

5. The pneumatic butterfly valve that is easy to install and maintain according to claim 4 is characterized in that: A spring (212) is fixedly connected to one side of the positioning rod (211), and the other end of the spring (212) is fixed to a clamping block (29).

6. The pneumatic butterfly valve that is easy to install and maintain according to claim 5 is characterized in that: A pull wire (213) is fixedly connected to one side of the positioning rod (211), and the pull wire (213) passes through the clamping block (29) and the mounting block (22).

7. The pneumatic butterfly valve that is easy to install and maintain according to claim 6 is characterized in that: The clamping assembly (3) comprises an arc-shaped block (31) fixedly connected to both sides of one end of the connecting pipe (4), and a screw rod (33) is threadedly inserted into the outer arc surface of the arc-shaped block (31).

8. The pneumatic butterfly valve that is easy to install and maintain according to claim 7 is characterized in that: The inner arc surface of the arc block (31) is provided with a rubber pad (32), and the rubber pad (32) is rotatably connected to the screw rod (33).

Images