Driving structure of pneumatic valve

Abstract

The utility model discloses a drive structure of pneumatic valve, including pneumatic shaft, gear, piston head, piston plate, rack, reinforcing rib, the number of gear is two, the two gear is sleeved on the pneumatic shaft, and the clearance groove exists between the two gear, the piston head is connected with the piston plate, the number of rack is two, and the reinforcing rib is provided with the clearance groove between the two gear and the piston plate. The two racks are arranged on the piston plate, the reinforcing rib is connected between the two racks, and the two gears are meshed with the two racks in a one-to-one correspondence mode. According to the utility model, distortion and deformation of the piston caused by non-uniform stress caused by wall thickness difference of the piston can be overcome, so that tooth breakage and fracture of the piston rack are reduced, the service life of the piston switch is prolonged, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic valves, in particular to a driving structure of a pneumatic valve. Background Art

[0002] Pneumatic valves are control devices powered by compressed air. Due to their low fluid resistance, they are widely used in various fields, including industrial automation, hydraulic systems, gas systems, automobiles, and the chemical industry. The piston and pneumatic shaft are key components of pneumatic valves and play a vital role in their operation and control. The piston receives the thrust of compressed air and converts it into mechanical energy, thereby driving the pneumatic shaft to open and close the valve. Existing pistons suffer from uneven stress caused by varying wall thickness, which can cause distortion and deformation, leading to tooth fracture and breakage of the piston rack, reducing their service life. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a pneumatic valve drive structure that can overcome the twisting deformation of the piston caused by the uneven stress caused by the difference in piston wall thickness, thereby reducing the breakage of the piston rack teeth, extending the service life of the piston switch, and improving product quality.

[0004] The utility model is realized through the following technical solutions: a driving structure of a pneumatic valve, including a pneumatic shaft, a gear, a piston head, a piston plate, a rack, and a reinforcing rib, wherein two gears are provided, the two gears are mounted on the pneumatic shaft, and an avoidance groove is provided between the two gears, the piston head is connected to the piston plate, two racks are provided, the two racks are arranged on the piston plate, the reinforcing rib is connected between the two racks, and the two gears and the two racks are meshed in a one-to-one correspondence.

[0005] Furthermore: an upper O-ring is provided at the upper end of the pneumatic shaft, and a lower O-ring is provided at the lower end of the pneumatic shaft.

[0006] Furthermore: an upper end support ring is provided at the upper end of the pneumatic shaft, and a lower end support ring is provided at the lower end of the pneumatic shaft.

[0007] Furthermore: the reinforcing rib is cylindrical.

[0008] Furthermore: the avoidance groove is formed by the surface of the pneumatic shaft being concave inward.

[0009] Furthermore: it also includes a triangular connecting block, the long right-angle side of the triangular connecting block is connected to the piston head, and the short right-angle side of the triangular connecting block is connected to the piston plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The utility model is achieved by installing two gears on the pneumatic shaft, and there is an avoidance groove between the two gears, two racks are provided, the two racks are arranged on the piston plate, and reinforcing ribs are connected between the two racks. The two racks and the two gears are meshed one by one, and reinforcing ribs are connected between the two racks. Compared with the existing integrated rack structure, the utility model divides the rack into two parts, connects reinforcing ribs between the two parts of the rack, reduces the force span of the rack, reduces the stress at the bottom, overcomes the twisting deformation of the piston caused by the uneven stress caused by the difference in piston wall thickness, thereby reducing the chipping and fracture of the piston rack, extending the service life of the piston switch, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a top view of the utility model;

[0013] Figure 2 This is the side view of the utility model Figure 1 ;

[0014] Figure 3 This is the side view of the utility model Figure 2 .

[0015] Explanation of the accompanying numbers: 1-pneumatic shaft, 2-gear, 3-piston head, 4-piston plate, 5-rack, 6-reinforcement rib, 7-avoidance groove, 8-upper end O-ring, 9-lower end O-ring, 10-upper end support ring, 11-lower end support ring, 12-triangular connecting block. DETAILED DESCRIPTION

[0016] Figures 1 to 3 A schematic structural diagram of an embodiment of a driving structure of a pneumatic valve provided by the utility model includes a pneumatic shaft 1, a gear 2, a piston head 3, a piston plate 4, a rack 5, and a reinforcing rib 6. Two gears 2 are provided, and the two gears 2 are mounted on the pneumatic shaft 1. There is an avoidance groove 7 between the two gears 2. The piston head 3 is connected to the piston plate 4. Two racks 5 are provided, and the two racks 5 are arranged on the piston plate 4. The reinforcing rib 6 is connected between the two racks 5. The two gears 2 and the two racks 5 are meshed one by one.

[0017] An upper O-ring 8 is provided at the upper end of the pneumatic shaft 1 , and a lower O-ring 9 is provided at the lower end of the pneumatic shaft 1 .

[0018] The upper O-ring 8 and the lower O-ring 9 can prevent gas or liquid from leaking from the gap between the pneumatic shaft 1 and the valve (not shown), thereby improving the sealing performance and ensuring the normal operation of the pneumatic valve and the stable operation of the system.

[0019] An upper end support ring 10 is provided at the upper end of the pneumatic shaft 1 , and a lower end support ring 11 is provided at the lower end of the pneumatic shaft 1 .

[0020] The upper support ring 10 and the lower support ring 11 ensure good contact between the pneumatic shaft 1 and other structures, thereby reducing leakage and further enhancing the sealing effect.

[0021] The reinforcing rib 6 is cylindrical.

[0022] The avoidance groove 7 is formed by an inward concave surface of the pneumatic shaft 1 .

[0023] It also includes a triangular connecting block 12 , the long right-angled side of the triangular connecting block 12 is connected to the piston head 3 , and the short right-angled side of the triangular connecting block 12 is connected to the piston plate 4 .

[0024] The triangular connecting block 12 improves the stability of the connection between the piston head 3 and the piston plate 4.

[0025] During operation, when the pneumatic actuator is in the open and closed states, the piston head 3 drives the rack 5 to move through the piston plate 4, and the rack 5 engages with the gear 2 to drive the pneumatic shaft 1 to rotate. By connecting the reinforcing rib 6 between the two racks 5, compared with the existing integrated rack structure, the utility model divides the rack 5 into two parts, and connects the reinforcing rib 6 between the two parts of the rack 5, so that the force span of the rack 5 is reduced, the stress at the bottom is reduced, and the twisting deformation of the piston caused by the uneven stress caused by the difference in piston wall thickness is overcome, thereby reducing the piston rack tooth breakage and fracture, extending the service life of the piston switch, and improving product quality.

[0026] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A pneumatic valve drive structure, characterized in that: It includes a pneumatic shaft, a gear, a piston head, a piston plate, a rack, and a reinforcing rib. There are two gears, which are mounted on the pneumatic shaft, and there is an avoidance groove between the two gears. The piston head is connected to the piston plate. There are two racks, which are arranged on the piston plate. The reinforcing rib is connected between the two racks, and the two gears and the two racks are meshed one by one.

2. The driving structure of a pneumatic valve according to claim 1, characterized in that: An upper O-ring is provided at the upper end of the pneumatic shaft, and a lower O-ring is provided at the lower end of the pneumatic shaft.

3. The driving structure of a pneumatic valve according to claim 2, characterized in that: An upper end support ring is provided at the upper end of the pneumatic shaft, and a lower end support ring is provided at the lower end of the pneumatic shaft.

4. The driving structure of a pneumatic valve according to claim 3, characterized in that: The reinforcing rib is cylindrical.

5. The driving structure of a pneumatic valve according to claim 4, characterized in that: The avoidance groove is formed by the surface of the pneumatic shaft being concave inward.

6. The driving structure of a pneumatic valve according to claim 5, characterized in that: It also includes a triangular connecting block, wherein the long right-angle side of the triangular connecting block is connected to the piston head, and the short right-angle side of the triangular connecting block is connected to the piston plate.

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