Pneumatic plate valve

Abstract

The utility model discloses a pneumatic plate valve which comprises a valve body, a flashboard, a pneumatic cylinder and a contact assembly, the flashboard is arranged in the valve body, the pneumatic cylinder drives the flashboard to move linearly so as to achieve disconnection and connection of the space in the valve body, a setting rod is fixedly arranged on the valve body, and a first proximity switch and a second proximity switch are detachably connected to the setting rod. One end of a moving rod of the contact assembly is fixedly connected with the flashboard, the other end of the moving rod is provided with a contact piece, the contact piece is arranged between the first proximity switch and the second proximity switch, and the setting rod, the moving rod and a telescopic rod of the pneumatic cylinder are arranged in parallel; according to the pneumatic plate valve, the contact assembly used for controlling the gate plate to move, start and stop, the first proximity switch and the second proximity switch are arranged outside, the relative positions of the contact assembly and the proximity switches can be adjusted based on the actual situation of the service time of the pneumatic plate valve, contact between the contact assembly and the proximity switches is effectively avoided, damage to the proximity switches is reduced, and the service life of the pneumatic plate valve is prolonged. The valve working stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of cement production equipment technology, specifically to a pneumatic plate valve. Background Technology

[0002] The cement raw material final grinding system uses a roller press with pinned rollers. The pneumatic valve at the roller press discharge port uses a pneumatically driven telescopic rod to move the gate plate reciprocally, opening and closing the discharge port. The pneumatic valve is generally controlled by a magnetic switch, which is usually located inside the valve. The gate plate is the contact mechanism that triggers the magnetic switch. After a period of use, due to factors such as gate plate wear, the gap around the gate plate increases, easily causing the gate plate to vibrate during movement. This alters the gate plate's trajectory, potentially leading to contact between the gate plate and the magnetic switch, causing damage to the magnetic switch.

[0003] Damage to the magnetic switch can cause the discharge valve to fail to effectively control the material discharge, resulting in material discharge problems in the roller press equipment. This can easily lead to subsequent malfunctions such as overflowing of the buffer hopper and material pressing on the elevator. In addition, the damage to the magnetic switch is caused by the gate plate after long-term use. Replacing the magnetic switch will not solve the problem of contact between the gate plate and the magnetic switch, and the magnetic switch will still be damaged again after repair.

[0004] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content

[0005] To address the aforementioned technical deficiencies, the present invention provides a pneumatic gate valve, comprising a valve body, a gate, a pneumatic cylinder, a contact assembly, a first proximity switch, and a second proximity switch. The gate is disposed within the valve body and is moved linearly by the pneumatic cylinder to achieve the disconnection and connection of the space within the valve body. A setting rod is fixedly disposed on the valve body, and the first and second proximity switches are detachably connected to the setting rod. The contact assembly comprises a moving rod and a contact piece. One end of the moving rod is fixedly connected to the gate, and the other end is provided with the contact piece, which is disposed between the first and second proximity switches. The setting rod, the moving rod, and the telescopic rod of the pneumatic cylinder are all arranged in parallel. The first and second proximity switches are connected to an air source controller, and the air source is connected to the pneumatic cylinder through the air source controller.

[0006] Preferably, the valve body includes a connecting pipe and a gate box. The connecting pipe is fixedly connected to the pneumatic cylinder through the gate box. A communicating cavity is provided through the connecting pipe. A placement cavity for placing the gate is provided in the gate box. The placement cavity and the communicating cavity are connected. The gate enters the communicating cavity under the drive of the pneumatic cylinder.

[0007] Preferably, the gate is configured as a rectangular plate, and the gate is provided with reinforcing ribs. The reinforcing ribs extend linearly along the moving direction of the gate, and the reinforcing ribs are arranged in pairs, with at least four reinforcing ribs symmetrically arranged on both sides of the gate.

[0008] Preferably, the cross-section of the connecting cavity is rectangular, the width of the cross-section of the connecting cavity is the same as the width of the gate, and the length of the cross-section of the connecting cavity is less than the length of the gate.

[0009] Preferably, the side wall of the connecting pipe is provided with a through hole corresponding to the gate box. The through hole includes a central through section and a side guide section. The central through section is provided corresponding to the gate, and the side guide section is provided corresponding to the reinforcing rib. The placement cavity includes a central placement section and a side placement section. The central placement section is provided corresponding to the gate, and the side placement section is provided corresponding to the reinforcing rib.

[0010] Preferably, the gate box is provided with a movable hole, and the movable rod is disposed in the movable hole.

[0011] Preferably, the setting rod is fixedly disposed on the outside of the gate box, and two mounting plates are provided on the setting rod. The first proximity switch and the second proximity switch are respectively disposed on the mounting plates, and the contact piece is disposed between the two mounting plates.

[0012] Preferably, the cross-section of the setting rod is rectangular, and the mounting plate is provided with a U-shaped fixing groove, and the setting rod is snapped into the fixing groove.

[0013] Preferably, a connecting rod is provided in the fixing groove, a fixing nut is threaded onto the connecting rod, a connecting hole is provided on the setting rod, the connecting rod is disposed in the connecting hole, and the setting rod is disposed between the fixing nut and the mounting plate.

[0014] Preferably, the connecting hole is configured as an elongated slotted hole extending in a straight line along the setting rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting the contact assembly, the first proximity switch and the second proximity switch used to control the movement and start / stop of the gate externally, the relative position of the contact assembly and the proximity switch can be adjusted based on the actual usage time of the pneumatic gate valve through the detachably connected first proximity switch and second proximity switch, effectively avoiding contact between the contact assembly and the proximity switch, reducing damage to the proximity switch and improving the working stability of the valve. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of the pneumatic plate valve;

[0017] Figure 2 This is a side view of the structure of the pneumatic plate valve;

[0018] Figure 3 This is a front sectional view of the pneumatic plate valve;

[0019] Figure 4 This is a structural view of the connecting pipe body;

[0020] Figure 5 This is a structural view of the gate box;

[0021] Figure 6 This is a view of the connection structure of the mounting plate;

[0022] Figure 7 A view of the connection structure of the setting rod.

[0023] The numbers in the diagram represent:

[0024] 1-Valve body; 2-Gate; 3-Pneumatic cylinder; 4-Contact assembly; 5-First proximity switch; 6-Second proximity switch; 7-Setting rod; 8-Mounting piece; 11-Connecting tube; 12-Gate box; 13-Communication cavity; 14-Placement cavity; 15-Through hole; 21-Reinforcing rib plate; 41-Moving rod; 42-Contact piece; 71-Connecting hole; 81-Fixing groove; 82-Connecting rod; 83-Fixing nut. Detailed Implementation

[0025] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is a front view of the structure of the pneumatic plate valve; Figure 2 This is a side view of the structure of the pneumatic plate valve;Figure 3 This is a front sectional view of the pneumatic plate valve.

[0028] The pneumatic valve of this utility model includes a valve body 1, a gate 2, a pneumatic cylinder 3, a contact assembly 4, a first proximity switch 5, and a second proximity switch 6. The gate 2 is disposed inside the valve body 1 and is moved linearly by the pneumatic cylinder 3 to achieve the disconnection and connection of the space inside the valve body 1. A setting rod 7 is fixedly disposed on the valve body 1. The first proximity switch 5 and the second proximity switch 6 are detachably connected to the setting rod 7. The contact assembly 4 includes a moving rod 41 and a contact piece 42. One end of the moving rod 41 is fixedly connected to the gate 2, and the other end is provided with the contact piece 42. The contact piece 42 is disposed between the first proximity switch 5 and the second proximity switch 6. The setting rod 7, the moving rod 41, and the telescopic rod of the pneumatic cylinder 3 are all arranged in parallel. The first proximity switch 5 and the second proximity switch 6 are connected to an air source controller, and the air source is connected to the pneumatic cylinder 3 through the air source controller.

[0029] The pneumatic cylinder 3 drives the gate 2 to move, thereby opening and closing the pneumatic valve. At the same time, the moving rod 41 moves with the gate 2, thereby triggering the contact piece 42 to the first proximity switch 5 and the second proximity switch 6 respectively, thus restricting the linear movement of the gate 2.

[0030] The valve body 1 includes a connecting pipe 11 and a gate box 12. The connecting pipe 11 is fixedly connected to the pneumatic cylinder 3 through the gate box 12. The connecting pipe 11 is provided with a through-hole cavity 13. The gate box 12 is provided with a placement cavity 14 for placing the gate 2. The placement cavity 14 and the through cavity 13 are connected. The gate 2 can enter the through cavity 13 under the drive of the pneumatic cylinder 3, and divide the through cavity 13 into two different parts.

[0031] Specifically, the gate plate 2 is configured as a rectangular plate, and the gate plate 2 is provided with reinforcing ribs 21. The reinforcing ribs 21 extend linearly along the moving direction of the gate plate 2. The reinforcing ribs 21 are arranged in pairs, and at least four reinforcing ribs 21 are symmetrically arranged on both sides of the gate plate 2 to ensure the structural strength of the gate plate 2, so as to effectively block and support the material at the discharge port.

[0032] The cross-section of the connecting cavity 13 is rectangular, the width of the cross-section of the connecting cavity 13 is the same as the width of the gate 2, and the length of the cross-section of the connecting cavity 13 is less than the length of the gate 2, thereby enabling the gate 2 to completely separate the connecting cavity 13.

[0033] like Figure 4As shown, Figure 4 This is a structural view of the connecting pipe body; the side wall of the connecting pipe body 11 is provided with a through hole 15 corresponding to the gate box 12. The through hole 15 includes a central through section and a side guide section. The central through section is provided corresponding to the gate 2, and the side guide section is provided corresponding to the reinforcing rib plate 21, thereby ensuring that the gate 2 can stably enter the communicating cavity 13 from the gate box 12 through the through hole 15 to realize the separation operation of the communicating cavity 13.

[0034] like Figure 5 As shown, Figure 5 This is a structural view of the gate box; similarly, the placement cavity 14 includes a central placement section and a side placement section. The central placement section is provided corresponding to the gate 2, and the side placement section is provided corresponding to the reinforcing rib 21, to ensure the stable linear movement of the gate 2 within the placement cavity 14.

[0035] To ensure a stable connection between the connecting pipe 11 and the gate box 12, a triangular reinforcing plate is provided and connected to both the connecting pipe 11 and the gate box 12 simultaneously to improve the overall strength of the connection structure.

[0036] This invention externally mounts the contact assembly 4, the first proximity switch 5, and the second proximity switch 6, which control the movement and start / stop of the gate 2. Through the detachably connected first proximity switch 5 and second proximity switch 6, the relative position of the contact assembly 4 and the proximity switch can be adjusted based on the actual usage time of the pneumatic gate valve. This effectively avoids contact between the contact assembly 4 and the proximity switch, reduces damage to the proximity switch, and improves the working stability of the valve.

[0037] Example 2

[0038] The gate box 12 is provided with a moving hole, and the moving rod 41 is disposed in the moving hole, so that the two ends of the moving rod 41 are respectively disposed on the inner and outer sides of the gate box 12. When the gate 2 moves linearly, the moving rod 41 moves linearly in the moving hole, which can further improve the moving stability of the contact piece 42.

[0039] The setting rod 7 is fixedly installed on the outside of the gate box 12. Two mounting pieces 8 are provided on the setting rod 7. The first proximity switch 5 and the second proximity switch 6 are respectively installed on the mounting pieces 8. The contact piece 42 is disposed between the two mounting pieces 8.

[0040] like Figure 6 and Figure 7 As shown, Figure 6 This is a view of the connection structure of the mounting plate; Figure 7This is a view of the connection structure of the setting rod. Specifically, the cross-section of the setting rod 7 is rectangular, and the mounting piece 8 is provided with a fixing groove 81. The setting rod 7 is disposed in the fixing groove 81, thereby allowing the mounting piece 8 to move linearly along the setting rod 7 and ensuring the stability of the position of the mounting piece 8 on the setting rod 7.

[0041] A connecting rod 82 is provided in the fixing groove 81, and a fixing nut 83 is threaded onto the connecting rod 82. A connecting hole 71 is provided on the setting rod 7, and the connecting rod 82 is disposed in the connecting hole 71. The setting rod 7 is disposed between the fixing nut 83 and the mounting piece 8, so that the position of the mounting piece 8 on the setting rod 7 can be fixed by tightening the fixing nut 83.

[0042] Preferably, the connecting hole 71 is configured as an elongated hole extending in a straight line along the setting rod 7. By moving the connecting rod 82 in a straight line through the connecting hole 71, the position of the mounting piece 8 can be adjusted, thereby realizing the position adjustment of the first proximity switch 5 and the second proximity switch 6.

[0043] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A pneumatic plate valve, characterized in that, The device includes a valve body, a gate, a pneumatic cylinder, a contact assembly, a first proximity switch, and a second proximity switch. The gate is disposed within the valve body and is moved linearly by the pneumatic cylinder to open and close the space within the valve body. A setting rod is fixedly disposed on the valve body. The first and second proximity switches are detachably connected to the setting rod. The contact assembly includes a moving rod and a contact piece. One end of the moving rod is fixedly connected to the gate, and the other end is provided with the contact piece, which is disposed between the first and second proximity switches. The setting rod, the moving rod, and the telescopic rod of the pneumatic cylinder are all arranged in parallel. The first and second proximity switches are connected to an air source controller, and the air source is connected to the pneumatic cylinder through the air source controller.

2. The pneumatic plate valve as described in claim 1, characterized in that, The valve body includes a connecting pipe and a gate box. The connecting pipe is fixedly connected to the pneumatic cylinder through the gate box. A communicating cavity is provided through the connecting pipe. A placement cavity for placing the gate is provided in the gate box. The placement cavity and the communicating cavity are connected. The gate enters the communicating cavity under the drive of the pneumatic cylinder.

3. The pneumatic plate valve as described in claim 2, characterized in that, The gate is configured as a rectangular plate, and the gate is provided with reinforcing ribs. The reinforcing ribs extend linearly along the moving direction of the gate, and the reinforcing ribs are arranged in pairs, with at least four reinforcing ribs symmetrically arranged on both sides of the gate.

4. The pneumatic plate valve as described in claim 3, characterized in that, The cross-section of the connecting cavity is rectangular, the width of the cross-section of the connecting cavity is the same as the width of the gate, and the length of the cross-section of the connecting cavity is less than the length of the gate.

5. The pneumatic plate valve as described in claim 4, characterized in that, The side wall of the connecting pipe is provided with a through hole corresponding to the gate box. The through hole includes a central through section and a side guide section. The central through section is provided corresponding to the gate, and the side guide section is provided corresponding to the reinforcing rib plate. The placement cavity includes a central placement section and a side placement section. The central placement section is provided corresponding to the gate, and the side placement section is provided corresponding to the reinforcing rib plate.

6. The pneumatic plate valve as described in claim 2, characterized in that, The gate box is provided with a movable hole, and the movable rod is disposed in the movable hole.

7. The pneumatic plate valve as described in claim 6, characterized in that, The setting rod is fixedly installed on the outside of the gate box. Two mounting plates are provided on the setting rod. The first proximity switch and the second proximity switch are respectively installed on the mounting plates. The contact piece is disposed between the two mounting plates.

8. The pneumatic plate valve as described in claim 7, characterized in that, The cross-section of the setting rod is rectangular, and the mounting plate is provided with a U-shaped fixing groove, and the setting rod is snapped into the fixing groove.

9. The pneumatic plate valve as described in claim 8, characterized in that, A connecting rod is provided in the fixing groove, and a fixing nut is threaded onto the connecting rod. A connecting hole is provided on the setting rod, and the connecting rod is disposed in the connecting hole and between the fixing nut and the mounting plate.

10. The pneumatic plate valve as described in claim 9, characterized in that, The connecting hole is configured as an elongated slotted hole extending in a straight line along the setting rod.

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