Air expansion shaft pressure relief device

Abstract

The utility model relates to the technical field of machinery, and discloses an inflatable shaft pressure relief device which comprises an arc-shaped rod, a square hollow column is fixedly connected to the outer wall of the upper side of the arc-shaped rod, a clamping groove is formed in the inner wall of the square hollow column, a sliding block is slidably connected to the inner wall of the square hollow column, and a first sliding plate is fixedly connected to the outer wall of the sliding block. A connecting plate is fixedly connected to the inner wall of the rear side of the first sliding plate, a second sliding plate is fixedly connected to the outer wall of the lower side of the connecting plate, a first spring is fixedly connected to the lower surface of the second sliding plate, and a moving assembly is arranged on the outer wall of the lower side of the arc-shaped rod and used for moving the device. According to the pressure relief valve, the sliding block is pressed to drive the first sliding plate, the connecting plate and the second sliding plate to move downwards, the second sliding plate drives the fixing rod to move downwards, continuous pressure relief of the pressure relief valve is achieved, and when workers conduct pressure relief on the inflatable shaft, the workers do not need to conduct continuous pressing, and the effect of saving manpower is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a pressure relief device for an air shaft. Background Art

[0002] An air shaft is a cylindrical mechanical component, which is widely used in various production and processing equipment. When processing non-woven fabrics, after the rolled non-woven fabrics and the air shaft are taken off the machine together, since the bumps on the outer ring of the air shaft will protrude and apply a force to the contact surface between the non-woven fabric roll and the outer ring of the air shaft, it is impossible to directly pull out the air shaft from the non-woven fabric roll. Generally, workers use a thick iron wire or other hard cylindrical object to squeeze the pressure relief valve of the air shaft. After the air pump releases the gas, the bumps will return to the inside of the air shaft, and the workers can pull out the air shaft from the non-woven fabric roll.

[0003] When most air shaft pressure relief devices are in use, workers usually need to hold a tool to continuously press the pressure relief valve. As a result, when the pressure is relieved, workers need to hold the pressure relief valve for several minutes, during which they cannot do other work, which is not conducive to saving manpower. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a pressure relief device for an air shaft, aiming to improve the problem that the air shaft pressure relief device cannot save manpower during use.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A pressure relief device for an air shaft includes an arc-shaped rod. A square hollow column is fixedly connected to the outer wall on the upper side of the arc-shaped rod. A card slot is provided in the inner wall of the square hollow column. A slider is slidably connected to the inner wall of the square hollow column. A first sliding plate is fixedly connected to the outer wall of the slider. A connecting plate is fixedly connected to the inner wall at the rear side of the first sliding plate. A second sliding plate is fixedly connected to the outer wall at the lower side of the connecting plate. A first spring is fixedly connected to the lower surface of the second sliding plate, and the lower surface of the first spring is fixedly connected to the inner wall of the square hollow column. A fixed rod is slidably connected to the inner wall at the lower side of the square hollow column, and the upper surface of the fixed rod is fixedly connected to the lower surface of the second sliding plate. A push rod is slidably connected to the inner wall of the slider. A limiting plate is fixedly connected to the lower surface of the push rod. A spring piece is slidably connected to the outer wall of the push rod. A moving component is provided on the outer wall at the lower side of the arc-shaped rod, and the moving component is used for the movement of the device.

[0007] Preferably, the moving component includes a handle. The outer wall on the left side of the handle is fixedly connected to the outer wall on the right side of the arc-shaped rod, and a fixing plate is fixedly connected to the outer wall in front of the handle.

[0008] Preferably, the outer wall of the first sliding plate is slidably connected to the inner wall of the square hollow column, the outer wall of the second sliding plate is slidably connected to the inner wall of the square hollow column, the outer wall of the spring piece is slidably connected to the inner wall of the square hollow column, the lower outer wall of the spring piece is fixedly connected to the inner wall of the second sliding plate, and the left outer wall of the spring piece is slidably connected to the inner wall of the card slot.

[0009] Preferably, a slide rail is fixedly connected to the front outer wall of the fixed plate, a slide seat is slidably connected to the outer wall of the slide rail, and the rear outer wall of the slide seat is slidably connected to the front outer wall of the fixed plate.

[0010] Preferably, an L-shaped plate is fixedly connected to the front outer wall of the slide seat, a transmission plate is fixedly connected to the front outer wall of the L-shaped plate, and a limiting frame is fixedly connected to the upper surface of the transmission plate.

[0011] Preferably, a slide rod is slidably connected to the inner wall of the transmission plate, and a fixed block is fixedly connected to the lower outer wall of the slide rod.

[0012] Preferably, the rear outer wall of the fixed block is fixedly connected to the front outer wall of the fixed plate, and a second spring is fixedly connected to the upper surface of the fixed block.

[0013] Preferably, the upper surface of the second spring is fixedly connected to the lower surface of the transmission plate, and a limiting rod is fixedly connected to the front outer wall of the fixed plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, by pressing the slider, the first sliding plate, the connecting plate and the second sliding plate are driven to move downward, the fixed rod is driven to move downward by the second sliding plate, and the downward movement of the spring piece is fixed by the card slot, so as to continuously relieve the pressure of the pressure relief valve, and when the worker relieves the pressure of the air shaft, it is not necessary for the worker to continuously press, achieving the effect of saving manpower.

[0016] 2. In the utility model, by pressing the transmission plate, the limiting frame is driven to move downward, achieving the effect of facilitating the device to be buckled on the air shaft. By releasing the transmission plate, the transmission plate and the limiting frame are driven to move upward by the second spring. Under the action of the arc-shaped rod and the limiting frame, the device is fixed, preventing the device from being unstable due to the impact of the pressure-relieving gas on the device. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of a pressure relief device for an air shaft proposed by the utility model;

[0018] Figure 2 is a schematic diagram of a slider of a pressure relief device for an air shaft proposed by the utility model;

[0019] Figure 3Schematic diagram of the L-shaped plate of a pressure relief device for an air shaft according to the present utility model.

[0020] Legend description:

[0021] 1. Arc-shaped rod; 2. Square hollow column; 3. Slide block; 4. First sliding plate; 5. Connecting plate; 6. Second sliding plate; 7. First spring; 8. Fixed rod; 9. Push rod; 10. Limiting plate; 11. Spring piece; 12. Handle; 13. Fixed plate; 14. Slide rail; 15. Slide seat; 16. L-shaped plate; 17. Transmission plate; 18. Limiting frame; 19. Fixed block; 20. Limiting rod; 21. Slide rod; 22. Second spring; 23. Card slot. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Refer to Figure 1 and Figure 2 , an embodiment provided by the present utility model: A pressure relief device for an air shaft, including an arc-shaped rod 1. The outer wall on the upper side of the arc-shaped rod 1 is fixedly connected with a square hollow column 2. A card slot 23 is opened on the inner wall of the square hollow column 2. A slide block 3 is slidably connected to the inner wall of the square hollow column 2. The outer wall of the slide block 3 is fixedly connected with a first sliding plate 4. The inner wall on the rear side of the first sliding plate 4 is fixedly connected with a connecting plate 5. The outer wall on the lower side of the connecting plate 5 is fixedly connected with a second sliding plate 6. The lower surface of the second sliding plate 6 is fixedly connected with a first spring 7. The lower surface of the first spring 7 is fixedly connected to the inner wall of the square hollow column 2. A fixed rod 8 is slidably connected to the inner wall on the lower side of the square hollow column 2. The upper surface of the fixed rod 8 is fixedly connected to the lower surface of the second sliding plate 6. A push rod 9 is slidably connected to the inner wall of the slide block 3. The lower surface of the push rod 9 is fixedly connected with a limiting plate 10. A spring piece 11 is slidably connected to the outer wall of the push rod 9. A moving component is arranged on the outer wall on the lower side of the arc-shaped rod 1, and the moving component is used for the movement of the device; the moving component includes a handle 12. The outer wall on the left side of the handle 12 is fixedly connected to the outer wall on the right side of the arc-shaped rod 1. The outer wall on the front side of the handle 12 is fixedly connected with a fixed plate 13.

[0024] Specifically, when the fixed rod 8 is buckled on the pressure relief valve for pressure relief, by pressing the push rod 9, under the action of the inclined plane on the right side below the push rod 9, the spring piece 11 is driven to move to the right and slide out of the inner wall of the clamping groove 23. Under the action of the first spring 7, the second slide plate 6, the connecting plate 5 and the first slide plate 4 are driven to move upward, and the fixed rod 8 is driven to move upward by the second slide plate 6, achieving the effect of sliding out of the pressure relief valve. The inner wall of the spring piece 11 prevents the push rod 9 from moving downward due to gravity. By the worker holding the handle 12, the effect of facilitating the movement of the device is achieved. When the device is turned over so that the direction of the push rod 9 is downward, the limiting plate 10 prevents the push rod 9 from sliding out of the square hollow column 2 under the limiting action of the spring piece 11.

[0025] Refer to Figure 2 , the outer wall of the first slide plate 4 is slidably connected to the inner wall of the square hollow column 2, the outer wall of the second slide plate 6 is slidably connected to the inner wall of the square hollow column 2, the outer wall of the spring piece 11 is slidably connected to the inner wall of the square hollow column 2, the lower outer wall of the spring piece 11 is fixedly connected to the inner wall of the second slide plate 6, and the left outer wall of the spring piece 11 is slidably connected to the inner wall of the clamping groove 23;

[0026] Specifically, the inner wall of the square hollow column 2 achieves the effect of offset limitation on the up and down movement of the first slide plate 4, and the clamping groove 23 achieves the effect of fixing the downward movement of the spring piece 11.

[0027] Refer to Figure 3 , a slide rail 14 is fixedly connected to the front outer wall of the fixed plate 13, a slide seat 15 is slidably connected to the outer wall of the slide rail 14, and the rear outer wall of the slide seat 15 is slidably connected to the front outer wall of the fixed plate 13; an L-shaped plate 16 is fixedly connected to the front outer wall of the slide seat 15, a transmission plate 17 is fixedly connected to the front outer wall of the L-shaped plate 16, and a limiting frame 18 is fixedly connected to the upper surface of the transmission plate 17; a slide rod 21 is slidably connected to the inner wall of the transmission plate 17, and a fixed block 19 is fixedly connected to the lower outer wall of the slide rod 21; the rear outer wall of the fixed block 19 is fixedly connected to the front outer wall of the fixed plate 13, and a second spring 22 is fixedly connected to the upper surface of the fixed block 19; the upper surface of the second spring 22 is fixedly connected to the lower surface of the transmission plate 17, and a limiting rod 20 is fixedly connected to the front outer wall of the fixed plate 13;

[0028] Specifically, the slide rail 14 achieves the effect of offset limitation on the up and down movement of the slide seat 15, and the limiting rod 20 achieves the effect of range limitation on the downward movement of the L-shaped plate 16. When the device is not in use, under the action of the second spring 22 and the fixed block 19, the transmission plate 17 is supported. By pressing the transmission plate 17, the limiting frame 18 is driven to move downward, making it convenient for the device to be buckled on or removed from the air shaft.

[0029] Working principle: When using this device, the worker holds the handle 12 with his hand, buckles the whole device on the air shaft. By pressing the transmission plate 17, the limiting frame 18 is driven to move downward, squeezing the second spring 22. Through the downward movement of the limiting frame 18, the device is smoothly buckled on the air shaft. By releasing the transmission plate 17, under the elastic force of the second spring 22, the sliding seat 15 and the L-shaped plate 16 are driven to move upward, driving the limiting frame 18 to move upward. The up and down movement of the transmission plate 17 by the sliding rod 21 achieves the effect of offset limitation. By buckling the device on the air shaft, the initial fixing effect is achieved. Under the action of gravity, the arc rod 1 has a downward force. The second spring 22 provides an upward force for the limiting frame 18. The fixing effect of the whole device is achieved through the arc rod 1 and the limiting frame 18. By pressing the slider 3, the first sliding plate 4 and the connecting plate 5 are driven to move downward, driving the second sliding plate 6 and the spring piece 11 to move downward, squeezing the first spring 7. The second sliding plate 6 drives the fixing rod 8 to move downward. The fixing rod 8 slides into the upper part of the air shaft pressure relief valve to relieve the pressure. As the outer wall of the spring piece 11 moves downward to the inner wall of the card slot 23, the spring piece 11 is limited, and the fixing effect on the fixing rod 8 is achieved. During this period, the worker can do other things to achieve the effect of saving manpower. During the use of this device, not only the manpower is saved, but also it is convenient for the worker to relieve the pressure of multiple air shaft pressure relief valves to improve the efficiency. It also has the effect of further fixing the device and the air shaft, preventing the device from being unstable due to the gas ejected during pressure relief.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure relief device for an inflatable shaft, comprising an arc-shaped rod (1), characterized in that: The upper outer wall of the arc rod (1) is fixedly connected to a square hollow column (2), the inner wall of the square hollow column (2) is provided with a slot (23), the inner wall of the square hollow column (2) is slidably connected to a slider (3), the outer wall of the slider (3) is fixedly connected to a first slide plate (4), the rear inner wall of the first slide plate (4) is fixedly connected to a connecting plate (5), the lower outer wall of the connecting plate (5) is fixedly connected to a second slide plate (6), the lower surface of the second slide plate (6) is fixedly connected to a first spring (7), the first spring The lower surface of (7) is fixedly connected to the inner wall of the square hollow column (2), the lower inner wall of the square hollow column (2) is slidably connected to a fixed rod (8), the upper surface of the fixed rod (8) is fixedly connected to the lower surface of the second slide plate (6), the inner wall of the slider (3) is slidably connected to a push rod (9), the lower surface of the push rod (9) is fixedly connected to a limiting plate (10), the outer wall of the push rod (9) is slidably connected to a spring sheet (11), and the lower outer wall of the arc rod (1) is provided with a moving component, which is used to move the device.

2. The inflatable shaft pressure relief device according to claim 1, characterized in that: The moving assembly comprises a handle (12), the left outer wall of the handle (12) is fixedly connected to the right outer wall of the arc-shaped rod (1), and the front outer wall of the handle (12) is fixedly connected to a fixing plate (13).

3. The inflatable shaft pressure relief device according to claim 1, characterized in that: The outer wall of the first slide plate (4) is slidably connected to the inner wall of the square hollow column (2), the outer wall of the second slide plate (6) is slidably connected to the inner wall of the square hollow column (2), the outer wall of the spring sheet (11) is slidably connected to the inner wall of the square hollow column (2), the lower outer wall of the spring sheet (11) is fixedly connected to the inner wall of the second slide plate (6), and the left outer wall of the spring sheet (11) is slidably connected to the inner wall of the slot (23).

4. The inflatable shaft pressure relief device according to claim 2, characterized in that: The front outer wall of the fixed plate (13) is fixedly connected to a slide rail (14), the outer wall of the slide rail (14) is slidably connected to a slide seat (15), and the rear outer wall of the slide seat (15) is slidably connected to the front outer wall of the fixed plate (13).

5. The inflatable shaft pressure relief device according to claim 4, characterized in that: The front outer wall of the slide seat (15) is fixedly connected to an L-shaped plate (16), the front outer wall of the L-shaped plate (16) is fixedly connected to a transmission plate (17), and the upper surface of the transmission plate (17) is fixedly connected to a limiting frame (18).

6. The inflatable shaft pressure relief device according to claim 5, characterized in that: The inner wall of the transmission plate (17) is slidably connected to a slide bar (21), and the lower outer wall of the slide bar (21) is fixedly connected to a fixed block (19).

7. The inflatable shaft pressure relief device according to claim 6, characterized in that: The rear outer wall of the fixing block (19) is fixedly connected to the front outer wall of the fixing plate (13), and the upper surface of the fixing block (19) is fixedly connected to a second spring (22).

8. The inflatable shaft pressure relief device according to claim 7, characterized in that: The upper surface of the second spring (22) is fixedly connected to the lower surface of the transmission plate (17), and the front outer wall of the fixed plate (13) is fixedly connected to the limiting rod (20).

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