Anti-drop pressure relief bolt

Abstract

The utility model discloses an anti-drop pressure relief bolt, which belongs to the technical field of pressure relief bolts, aims at solving the problems that a spring and a sealing block in the pressure relief bolt in the prior art are easy to age and difficult to replace, and comprises a pressure relief bolt body and a pressure relief cylinder fixed at the end part of the pressure relief bolt body, a connecting hole is formed in the pressure relief bolt body, a cylindrical cavity is formed in the pressure relief cylinder, and a plurality of pressure relief holes are uniformly formed in the inner wall of the pressure relief cylinder; the movable disc is arranged in the cylindrical cavity in a sliding manner; through the arrangement of the pressure relief cylinder, the movable disc, the sealing block, the second spring and other structures, the functions of sealing and pressure relief of the pressure relief bolt body are achieved, operation of workers is facilitated, through the arrangement of the limiting assembly, the chuck is conveniently disassembled and assembled, and therefore the second spring and the sealing block are conveniently replaced, and the working efficiency is improved. And convenience is brought to the maintenance work of the pressure relief bolt body.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressure relief bolts, specifically relating to a pressure relief bolt that can prevent loosening. Background Technology

[0002] A bolt is a connecting part that can lock and fix two objects together through a threaded hole and threaded groove. A bolt consists of two parts: a head and a shank (a cylinder with external threads). Bolts have a long history and are widely used in industrial manufacturing. Some containers containing gas often need to release the pressure inside due to high gas pressure, which requires the use of pressure-releasing locking bolts.

[0003] In existing technologies, some pressure-relieving locking bolts typically have a spring and a sealing block fixed inside the bolt to seal the pressure relief channel during use. However, the spring's elasticity tends to decrease over time, which affects the sealing effect. At the same time, the sealing block is also prone to aging.

[0004] Therefore, a pressure relief bolt that can prevent detachment is needed to solve the problem that the springs and sealing blocks inside the pressure relief bolts in the existing technology are prone to aging and are not easy to replace. Utility Model Content

[0005] The purpose of this invention is to provide a pressure relief bolt that can prevent detachment, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure relief bolt that can prevent detachment, comprising a pressure relief bolt body, and further comprising:

[0007] The pressure relief cylinder is fixed to the end of the pressure relief bolt body. The pressure relief bolt body has a connecting hole inside, the pressure relief cylinder has a cylindrical cavity inside, and the inner wall of the pressure relief cylinder has multiple pressure relief holes evenly distributed.

[0008] The movable disc is slidably disposed inside the cylindrical cavity. A sealing block that mates with a connecting hole is fixed on the bottom surface of the movable disc, and a movable rod is fixed on the top surface of the movable disc. An annular groove is formed on the inner wall of the cylindrical cavity, and a chuck is disposed on the inner wall of the annular groove. A limiting component that mates with the chuck is disposed inside the pressure relief cylinder. The movable rod movably passes through the chuck, and a second spring is sleeved on the outer surface of the movable rod. The second spring is located between the movable disc and the chuck.

[0009] It should be noted in the solution that the limiting component includes:

[0010] The pressure relief cylinder has two symmetrically arranged movable holes inside it. A limit rod is movably connected inside the movable hole. A connecting block is fixedly sleeved on the outer surface of the limit rod. A first spring is sleeved on the outer surface of the limit rod. One end of the first spring is fixed to the surface of the connecting block, and the other end of the first spring is fixed to the inner wall of the movable hole. The outer surface of the chuck has two symmetrically distributed limit holes. The end of the limit rod is inserted into the limit hole.

[0011] It is worth noting that the surface of the pressure relief cylinder is provided with an annular groove, and an anti-slip pad is fixedly installed inside the annular groove. The surface of the anti-slip pad is provided with multiple anti-slip grooves evenly distributed.

[0012] It should be further noted that two rotating blocks are fixedly sleeved on the outer surface of the pressure relief cylinder.

[0013] In one preferred embodiment, a circular groove is provided on the outer surface of one of the rotating blocks corresponding to the limiting rod, and a pull ring is rotatably connected to the ends of the two limiting rods that are far apart from each other.

[0014] In a preferred embodiment, a pull block is fixed to the end of the movable rod.

[0015] Compared with the prior art, the pressure relief bolt that can prevent loosening provided by this utility model has at least the following beneficial effects:

[0016] (1) By setting up structures such as pressure relief cylinder, movable disc, sealing block and second spring, the function of sealing and pressure relief of the pressure relief bolt body is realized, and the operation of the staff is convenient. By setting up limit components, the chuck can be easily disassembled and assembled, which facilitates the replacement of the second spring and sealing block and brings convenience to the maintenance of the pressure relief bolt body.

[0017] (2) The stability of the pressure relief bolt body after tightening is improved by anti-slip pads and anti-slip grooves, thereby improving the anti-loosening property of the pressure relief bolt body. The two rotating blocks facilitate the tightening and disassembly of the pressure relief bolt body, the pull ring facilitates the movement of the limit rod, and the circular groove facilitates the storage of the pull ring. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 This is an exploded view of the overall structure of this utility model;

[0021] Figure 4 for Figure 3Enlarged structural diagram at point A;

[0022] Figure 5 This is a partial structural schematic diagram of the present invention.

[0023] In the diagram: 1. Pressure relief bolt body; 2. Pressure relief cylinder; 3. Pressure relief hole; 4. Rotary block; 5. Anti-slip pad; 6. Anti-slip groove; 7. Connecting hole; 8. Pull block; 9. Movable rod; 10. Circular groove; 11. Cylindrical cavity; 12. Annular groove; 13. Movable disc; 14. Chuck; 15. Limiting hole; 16. Movable hole; 17. Limiting rod; 18. Connecting block; 19. First spring; 20. Pull ring; 21. Sealing block; 22. Second spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Please see Figure 1-5 This utility model provides a pressure relief bolt that can be prevented from detaching, including a pressure relief bolt body 1, and further including:

[0026] Pressure relief cylinder 2 is fixed to the end of pressure relief bolt body 1. The pressure relief bolt body 1 has a connecting hole 7 inside. The pressure relief cylinder 2 has a cylindrical cavity 11 inside. Multiple pressure relief holes 3 are evenly provided on the inner wall of the pressure relief cylinder 2.

[0027] The movable disc 13 is slidably disposed inside the cylindrical cavity 11. A sealing block 21 that mates with the connecting hole 7 is fixed on the bottom surface of the movable disc 13. A movable rod 9 is fixed on the top surface of the movable disc 13. An annular groove 12 is provided on the inner wall of the cylindrical cavity 11. A chuck 14 is provided on the inner wall of the annular groove 12. A limiting component that mates with the chuck 14 is provided inside the pressure relief cylinder 2. The movable rod 9 moves through the chuck 14. A second spring 22 is sleeved on the outer surface of the movable rod 9. The second spring 22 is located between the movable disc 13 and the chuck 14.

[0028] Further as Figure 3 and Figure 4 As shown, it is worth noting that the limit component includes:

[0029] Two movable holes 16 are provided symmetrically inside the pressure relief cylinder 2. A limit rod 17 is movably connected inside the movable hole 16. A connecting block 18 is fixedly sleeved on the outer surface of the limit rod 17. A first spring 19 is sleeved on the outer surface of the limit rod 17. One end of the first spring 19 is fixed to the surface of the connecting block 18, and the other end of the first spring 19 is fixed to the inner wall of the movable hole 16. Two symmetrically distributed limit holes 15 are provided on the outer surface of the chuck 14. The end of the limit rod 17 is inserted into the limit hole 15.

[0030] Further as Figure 1 As shown, it is worth noting that the surface of the pressure relief cylinder 2 is provided with an annular groove, and an anti-slip pad 5 is fixedly installed inside the annular groove. The surface of the anti-slip pad 5 is provided with multiple anti-slip grooves 6 evenly distributed. The anti-slip pad 5 and the anti-slip grooves 6 improve the stability of the pressure relief bolt body 1 after tightening, thereby improving the anti-loosening property of the pressure relief bolt body 1. Two rotating blocks 4 are fixedly sleeved on the outer surface of the pressure relief cylinder 2. The two rotating blocks 4 facilitate the tightening and disassembly of the pressure relief bolt body 1.

[0031] Further as Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that a circular groove 10 is provided on the outer surface of one of the rotating blocks 4 corresponding to the limiting rod 17. A pull ring 20 is rotatably connected to the ends of the two limiting rods 17 that are far apart from each other. The pull ring 20 facilitates the movement of the limiting rod 17, and the circular groove 10 facilitates the storage of the pull ring 20. A pull block 8 is fixed to the end of the movable rod 9. The pull block 8 facilitates the movement of the movable rod 9, thereby facilitating the pressure relief operation of the pressure relief bolt body 1.

[0032] The working process of this solution is as follows: the chuck 14 is clamped in the annular groove 12, and then the connecting block 18 is pushed under the elastic force of the first spring 19, so that the limiting rod 17 is inserted into the limiting hole 15 of the chuck 14, thereby limiting the chuck 14. The movable plate 13 is located in the cylindrical cavity 11. Under the elastic force of the second spring 22, the movable plate 13 is pressed against the inner wall of the cylindrical cavity 11, so that the sealing block 21 is clamped into the connecting hole 7, thereby sealing the pressure relief bolt body 1. When pressure relief is required, the pull block 8 can be pulled to move the movable rod 9 to move the movable plate 13 and make the sealing block 21 disengage from the connecting hole 7, and then perform pressure relief work by cooperating with the pressure relief hole 3. After long-term use, the sealing block 21 is prone to aging. The limiting rod 17 is pulled by the pull ring 20 to disengage the limiting rod 17 from the chuck 14, so that the sealing block 21 and the second spring 22 can be removed and replaced.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure relief bolt with anti-loosening capability, comprising a pressure relief bolt body (1), characterized in that, Also includes: Pressure relief cylinder (2) is fixed to the end of pressure relief bolt body (1). The pressure relief bolt body (1) has a connecting hole (7) inside. The pressure relief cylinder (2) has a cylindrical cavity (11) inside. The inner wall of the pressure relief cylinder (2) has multiple pressure relief holes (3) evenly distributed. The movable disc (13) is slidably disposed inside the cylindrical cavity (11). A sealing block (21) that cooperates with the connecting hole (7) is fixed on the bottom surface of the movable disc (13). A movable rod (9) is fixed on the top surface of the movable disc (13). An annular groove (12) is provided on the inner wall of the cylindrical cavity (11). A chuck (14) is provided on the inner wall of the annular groove (12). A limiting component that cooperates with the chuck (14) is provided inside the pressure relief cylinder (2). The movable rod (9) moves through the chuck (14). A second spring (22) is sleeved on the outer surface of the movable rod (9). The second spring (22) is located between the movable disc (13) and the chuck (14).

2. The anti-loosening pressure relief bolt according to claim 1, characterized in that: The limiting component includes: Two movable holes (16) are provided and symmetrically opened inside the pressure relief cylinder (2). A limit rod (17) is movably connected inside the movable hole (16). A connecting block (18) is fixedly sleeved on the outer surface of the limit rod (17). A first spring (19) is sleeved on the outer surface of the limit rod (17). One end of the first spring (19) is fixed to the surface of the connecting block (18), and the other end of the first spring (19) is fixed to the inner wall of the movable hole (16). Two symmetrically distributed limit holes (15) are opened on the outer surface of the chuck (14). The end of the limit rod (17) is inserted into the limit hole (15).

3. The anti-loosening pressure relief bolt according to claim 2, characterized in that: The pressure relief cylinder (2) has an annular groove on its surface, and an anti-slip pad (5) is fixedly installed inside the annular groove. The anti-slip pad (5) has multiple anti-slip grooves (6) evenly distributed on its surface.

4. The anti-loosening pressure relief bolt according to claim 2, characterized in that: Two rotating blocks (4) are fixedly sleeved on the outer surface of the pressure relief cylinder (2).

5. A pressure relief bolt with anti-loosening capability according to claim 4, characterized in that: One of the rotating blocks (4) has a circular groove (10) on its outer surface corresponding to the limiting rod (17), and the ends of the two limiting rods (17) that are far apart from each other are rotatably connected to a pull ring (20).

6. A pressure relief bolt with anti-loosening capability according to claim 1, characterized in that: A pull block (8) is fixed to the end of the movable rod (9).

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