Pneumatic longitudinal valve

Abstract

The utility model discloses a pneumatic longitudinal valve, including the valve body, the valve plate of vertical insertion in the valve body inside, the fixed seat of transverse setting in the top of valve body back portion and setting in the fixed seat one side's air cylinder barrel, the first gas mouth of one side above the air cylinder barrel is provided with and its pipeline connection, and the other side above the air cylinder barrel is provided with and its pipeline connection second gas mouth, the piston is vertically provided in the air cylinder barrel, and the piston is in the air cylinder barrel and carries out horizontal translation, one side of the fixed seat transversely is provided with the rack of piston drive connection, and the rack is horizontally arranged at the one side of the top of valve body back portion, and the rack is translated at the top of valve body back portion through the drive of air cylinder barrel, the one side of the top of valve body back portion is rotatively provided with the gear of rack engagement, and the gear transmission is connected with the swing bar, and the other end articulated connection of swing bar has the connecting rod, and the other end articulated connection between the connecting rod and valve plate.

Description

Technical Field

[0001] This utility model relates to the field of valve bodies, and in particular to pneumatic longitudinal valves. Background Technology

[0002] A longitudinal valve is a valve in which the valve plug moves in a direction parallel to the direction of medium flow. Most existing slide gate valves are manual longitudinal valves. Their disadvantages are that they can only be operated manually, have a low degree of automation, and take a long time to adjust. Therefore, a pneumatic longitudinal valve has been proposed. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] A pneumatic longitudinal valve includes a valve body, a valve plate vertically inserted inside the valve body, a fixed seat horizontally disposed at the top of the back of the valve body, and a cylinder disposed on one side of the fixed seat. A first air port connected to a pipeline is provided on one side of the upper part of the cylinder, and a second air port connected to a pipeline is provided on the other side of the upper part of the cylinder. The first and second air ports are respectively connected to an external air intake device to allow air to enter the cylinder. A piston is vertically disposed inside the cylinder and moves horizontally within the cylinder. A rack horizontally disposed on one side of the fixed seat and driven by the piston is connected to the rack, which is mounted horizontally on one side of the top of the back of the valve body. The rack moves horizontally at the top of the back of the valve body driven by the cylinder. A gear meshing with the rack is rolled on one side of the top of the back of the valve body, and a rocker arm is driven by the gear. The other end of the rocker arm is hinged to a connecting rod, and the other end of the connecting rod is hinged to the valve plate.

[0005] Preferably, a guide rod is provided between the piston and the cylinder barrel, and the guide rod is laterally located at the bottom of the inner end of the cylinder barrel, and the guide rod passes through the piston, and the piston translates on the outer side of the guide rod;

[0006] The cylinder barrel is equipped with a first mechanical sensor and a first magnetic sensor for sensing the position of the piston on one side, and a second mechanical sensor and a second magnetic sensor for sensing the position of the piston on the other side. The first mechanical sensor, the first magnetic sensor, the second mechanical sensor, and the second magnetic sensor are electrically connected to the external air intake device.

[0007] Preferably, a third limiting bearing that rolls with the rack is provided on the side away from the cylinder barrel, and the rack is laterally located on the third limiting bearing. The third limiting bearing is rolled at the upper end of the back of the valve body, and a dust cover is provided on one side of the fixing seat to protect the parts above it from dust.

[0008] Preferably, a push plate is provided between the valve plate and the valve body, and the push plate is vertically inserted into the bottom of the valve body. The valve plate is vertically located in the middle of the push plate. The valve plate and the push plate move in the same direction. A first limit bearing and a second limit bearing are provided on both sides of the push plate, which slide synchronously with it inside the valve body. The push plate is hinged to the connecting rod.

[0009] Preferably, a bearing track is provided between the push plate and the valve body, and the bearing track is formed on the inner side of the valve body. The first limiting bearing and the second limiting bearing are slidably disposed inside the bearing track, and the first limiting bearing and the second limiting bearing slide along the path inside the bearing track.

[0010] Preferably, the push plate has limiting blocks that move synchronously with it on both sides of its forward face, and the limiting blocks are vertically located inside the bearing track, and the second limiting bearing is tumbled at the front end of the limiting block.

[0011] Preferably, both the first and second air inlets are laterally provided with filters to screen out foreign matter from the gas.

[0012] Preferably, the valve body is provided with multiple reset spring seats at its bottom, and each reset spring seat is provided with a reset spring that is elastically connected to the push plate.

[0013] Preferably, a valve cover is provided at the bottom of the front side of the valve body, and a pipe is formed at the connection between the valve cover and the valve body, and a coolant inlet and a coolant outlet are formed on one side of the valve cover.

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

[0015] When the piston is located on the right side inside the cylinder, the external air intake device continuously intakes air into the right side inside the cylinder through the second air port, driving the piston to move to the left. During the movement of the piston, the rack also moves in the same direction, causing the rack to push the gear to rotate clockwise. The rocker arm also rotates in the same direction as the gear, driving the connecting rod to move the valve plate upward from the bottom of the valve body until the valve plate contacts the top of the valve body. At this time, the second air port stops intake, the valve plate is fully open, and the valve body is in the open state.

[0016] When the piston is located on the left side inside the cylinder, the external air intake device continuously intakes air into the left side of the cylinder through the first air port, driving the piston to move to the right. During the piston's movement, the rack also moves in the same direction, causing the rack to push the gear to rotate counterclockwise. The rocker arm also rotates in the same direction as the gear, driving the connecting rod to move the valve plate downwards at the bottom of the valve body until the valve plate contacts the bottom of the valve body. At this point, the first air port stops intake, the valve plate is fully closed, and the valve body is in a closed state.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a pneumatic longitudinal valve;

[0020] Figure 2 This is another structural schematic diagram of a pneumatic longitudinal valve;

[0021] Figure 3 This is another structural schematic diagram of a pneumatic longitudinal valve.

[0022] The figure shows: 1. Valve body, 2. Valve cover, 3. Return spring seat, 4. Return spring, 5. First limit bearing, 6. Second limit bearing, 7. Valve plate, 8. Push plate, 9. Bearing track, 10. Limit block, 11. Connecting rod, 12. Swing rod, 13. Fixed seat, 14. Third limit bearing, 15. Rack, 16. Dust cover, 17. Gear, 18. Piston, 19. Guide rod, 20. First mechanical sensor, 21. Second mechanical sensor, 22. First magnetic sensor, 23. Second magnetic sensor, 24. Filter screen, 25. First air port, 26. Second air port, 27. Coolant inlet, 28. Coolant outlet. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3 In this embodiment of the utility model, the pneumatic longitudinal valve includes a valve body 1, a valve plate 7 vertically inserted into the valve body 1, a fixing seat 13 horizontally disposed at the top of the back of the valve body 1, and a cylinder (not shown in the figure) disposed on one side of the fixing seat 13. A first air port 25 connected to a pipeline is provided on one side of the upper part of the cylinder, and a second air port 26 connected to a pipeline is provided on the other side of the upper part of the cylinder. The first air port 25 and the second air port 26 are respectively connected to an external air intake device to allow air to enter the cylinder. A vertically disposed... Piston 18, which moves horizontally inside the cylinder, is provided with a rack 15 on one side of the fixed seat 13 that is driven to drive the piston 18. The rack 15 is mounted on one side of the top back of the valve body 1 and moves horizontally at the top back of the valve body 1 by the drive of the cylinder. A gear 17 is rolled on one side of the top back of the valve body 1 that meshes with the rack 15. The gear 17 is driven to connect to a rocker arm 12. The other end of the rocker arm 12 is hinged to a connecting rod 11. The other end of the connecting rod 11 is hinged to the valve plate 7.

[0025] Then, when the piston 18 is located on the right side inside the cylinder, the external air intake device continuously intakes air into the right side inside the cylinder through the second air port 26, and drives the piston 18 to move to the left. During the movement, the piston 18 also drives the rack 15 to move in the same direction, so that the rack 15 pushes the gear 17 to rotate clockwise during the movement. The rocker arm 12 rotates in the same direction with the gear 17 at the same time, and drives the connecting rod 11 to move the valve plate 7 upward at the bottom of the valve body 1 until the valve plate 7 contacts the top of the valve body 1. At this time, the second air port 26 stops intake, the valve plate 7 is fully open, and the valve body 1 is in the open state.

[0026] When the piston 18 is located on the left side inside the cylinder, the external air intake device continuously intakes air into the left side inside the cylinder through the first air port 25, driving the piston 18 to move to the right. During the movement, the piston 18 also drives the rack 15 to move in the same direction, causing the rack 15 to push the gear 17 to rotate counterclockwise. The rocker arm 12 also rotates in the same direction as the gear 17, driving the connecting rod 11 to move the valve plate 7 downward at the bottom of the valve body 1 until the valve plate 7 contacts the bottom of the valve body 1. At this time, the first air port 25 stops intake, the valve plate 7 is fully closed, and the valve body 1 is in a closed state.

[0027] A guide rod 19 is provided between the piston 18 and the cylinder barrel, and the guide rod 19 is located laterally at the bottom of the cylinder barrel. The guide rod 19 passes through the piston 18, and the piston 18 moves horizontally on the outer side of the guide rod 19, so that the piston moves more smoothly when it reciprocates inside the cylinder barrel.

[0028] The cylinder barrel is provided with a first mechanical sensor 20 and a first magnetic sensor 22 for sensing the position of the piston 18 on one side, and a second mechanical sensor 21 and a second magnetic sensor 23 for sensing the position of the piston 18 on the other side. The first mechanical sensor 20, the first magnetic sensor 22, the second mechanical sensor 21 and the second magnetic sensor 23 are electrically connected to the external air intake device.

[0029] Then, when the piston 18 moves to the left side inside the cylinder, the first mechanical sensor 20 and the first magnetic sensor 22 sense the piston 18. At this time, the first mechanical sensor 20 and the first magnetic sensor 22 drive the external air intake device to stop air intake into the second air port 26.

[0030] When the piston 18 moves to the right side inside the cylinder, the second mechanical sensor 21 and the second magnetic sensor 23 sense the piston 18. At this time, the second mechanical sensor 21 and the second magnetic sensor 23 drive the external air intake device to stop air intake into the first air port 25.

[0031] A third limiting bearing 14 is provided on the side away from the cylinder barrel, which rolls with the rack 15. The rack 15 is laterally located on the third limiting bearing 14. The third limiting bearing 14 is rolled on the upper end of the back of the valve body 1. A dust cover 16 is also provided on one side of the fixing seat 13 to protect the parts above it from dust.

[0032] A push plate 8 is provided between the valve plate 7 and the valve body 1, and the push plate 8 is vertically inserted into the bottom of the valve body 1. The valve plate 7 is vertically located in the middle of the push plate 8. The valve plate 7 and the push plate 8 move in the same direction. The push plate 8 is provided with a first limiting bearing 5 and a second limiting bearing 6 on both sides, which slide synchronously with it inside the valve body 1. The push plate 8 is hinged to the connecting rod 11, so that the piston 18 drives the rack 15 to move in the same direction during the movement. The rack 15 pushes the gear 17 to rotate clockwise during the movement, and the rocker arm 12 rotates in the same direction with the gear 17 at the same time. This drives the connecting rod 11 to drive the push plate 8 and the valve plate 7 to move up and down reciprocally at the bottom of the valve body 1. When the push plate 8 and the valve plate 7 slide inside the valve body 1, the first limiting bearing 5 and the second limiting bearing 6 keep the push plate 8 stable during the sliding process.

[0033] A bearing track 9 is provided between the push plate 8 and the valve body 1, and the bearing track 9 is formed on the inner side of the valve body 1. The first limiting bearing 5 and the second limiting bearing 6 are respectively slidably disposed inside the bearing track 9, and the first limiting bearing 5 and the second limiting bearing 6 slide along the path inside the bearing track 9, so as to ensure that the push plate 8 and the valve plate 7 maintain the movement path without deviation when they move up and down inside the valve body 1.

[0034] The push plate 8 has two limiting blocks 10 on its front side that move synchronously with it, and the limiting blocks 10 are vertically located inside the bearing track 9, and the second limiting bearing 6 is rotatably disposed at the front end of the limiting block 10.

[0035] Both the first air port 25 and the second air port 26 are laterally provided with a filter screen 24 to screen out foreign objects in the gas, which can effectively prevent foreign objects in the gas from entering the cylinder barrel and make its operation more stable.

[0036] The valve body 1 is provided with multiple reset spring seats 3 at its bottom, and each reset spring seat 3 is provided with a reset spring 4 that is elastically connected to the push plate 8. The elastic cooperation between the reset spring 4 and the reset spring seat 3 allows the push plate 8 to be elastically pulled when it reciprocates inside the valve body 1.

[0037] A valve cover 2 is provided at the bottom of the front side of the valve body 1, and a pipe is formed at the connection between the valve cover 2 and the valve body 1 (not shown in the figure). A coolant inlet 27 and a coolant outlet 28 are formed on one side of the valve cover 2. Coolant can flow into the pipe through the coolant inlet 27 and flow out through the coolant outlet 28. The coolant inside the pipe can be circulated through the cooperation between the coolant inlet 27 and the coolant outlet 28, thereby cooling the valve plate 7.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A pneumatic longitudinal valve, comprising a valve body, characterized in that, A valve plate is vertically inserted into the valve body, a fixed seat is horizontally positioned at the top of the back of the valve body, and a cylinder is positioned on one side of the fixed seat. A first air port connected to the cylinder is located on one side of the cylinder's upper surface, and a second air port connected to the cylinder's upper surface is located on the other side of the cylinder's upper surface. Both the first and second air ports are connected to external air intake devices to allow air to enter the cylinder. A piston is vertically positioned inside the cylinder and moves horizontally within it. A rack, connected to the piston, is horizontally positioned on one side of the fixed seat and is mounted horizontally at the top of the back of the valve body. The rack moves horizontally at the top of the back of the valve body driven by the cylinder. A gear, meshing with the rack, is rolled on one side of the top of the back of the valve body. A rocker arm is connected to the gear, and the other end of the rocker arm is hinged to a connecting rod. The other end of the connecting rod is hinged to the valve plate.

2. The pneumatic longitudinal valve according to claim 1, characterized in that, A guide rod is provided between the piston and the cylinder barrel, and the guide rod is located laterally at the bottom of the cylinder barrel. The guide rod passes through the piston, and the piston moves along the outer side of the guide rod. The cylinder barrel is equipped with a first mechanical sensor and a first magnetic sensor for sensing the position of the piston on one side, and a second mechanical sensor and a second magnetic sensor for sensing the position of the piston on the other side. The first mechanical sensor, the first magnetic sensor, the second mechanical sensor, and the second magnetic sensor are electrically connected to the external air intake device.

3. The pneumatic longitudinal valve according to claim 1, characterized in that, A third limiting bearing is provided on the side away from the cylinder barrel, which rolls with the rack, and the rack is laterally located on the third limiting bearing. The third limiting bearing is rolled on the upper end of the back of the valve body. A dust cover is also provided on one side of the fixed seat to protect the parts above it from dust.

4. The pneumatic longitudinal valve according to claim 1, characterized in that, A push plate is provided between the valve plate and the valve body, and the push plate is vertically inserted into the bottom of the valve body. The valve plate is vertically located in the middle of the push plate. The valve plate and the push plate move in the same direction. A first limit bearing and a second limit bearing are provided on both sides of the push plate, which slide synchronously with it inside the valve body. The push plate is hinged to the connecting rod.

5. The pneumatic longitudinal valve according to claim 4, characterized in that, A bearing track is provided between the push plate and the valve body, and the bearing track is formed on the inner side of the valve body. The first limiting bearing and the second limiting bearing are slidably disposed inside the bearing track, and the first limiting bearing and the second limiting bearing slide along the path inside the bearing track.

6. The pneumatic longitudinal valve according to claim 4, characterized in that, Both sides of the front face of the push plate are provided with limiting blocks that move synchronously with it, and the limiting blocks are vertically located inside the bearing track, and the second limiting bearing is rolled at the front end of the limiting block.

7. The pneumatic longitudinal valve according to claim 1, characterized in that, Both the first and second air inlets are equipped with horizontally arranged filters to separate foreign matter from the gas.

8. The pneumatic longitudinal valve according to claim 4, characterized in that, The valve body is provided with multiple reset spring seats at the bottom, and each reset spring seat is provided with a reset spring that is elastically connected to the push plate.

9. The pneumatic longitudinal valve according to claim 4, characterized in that, A valve cover is provided at the bottom of the front side of the valve body, and a pipe is formed at the connection between the valve cover and the valve body. A coolant inlet and a coolant outlet are formed on one side of the valve cover.

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