Elastic baffle ring press-in device for pressure relief valve hole

Abstract

The utility model relates to pressure -relief valve production technical field, concretely is a kind of elastic baffle ring press-in device for pressure -relief valve hole, including pressure -relief valve body, the inside installation of pressure -relief valve body has spring, the end of spring away from pressure -relief valve body is installed with gasket, the gasket is abutted with spring, the side of gasket away from spring is installed with baffle ring body, the surface of pressure -relief valve body is covered with taper sleeve, the surface of taper sleeve is covered with guide sleeve, the inside installation of guide sleeve has tertiary lever, the inner wall of gasket is slidably connected with tertiary lever, the end of tertiary lever away from pressure -relief valve body is fixedly connected with secondary lever. The utility model, solve the process of using elastic baffle ring press-in device for pressure -relief valve hole to press gasket and baffle ring into pressure -relief valve hole, often need to exert greater force to primary lever, lead to when using primary lever to press in gasket, prone to the situation of primary lever inclination, make gasket and baffle ring press-in effect poor problem.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve manufacturing technology, and in particular to a device for pressing in an elastic retaining ring into a pressure relief valve orifice. Background Technology

[0002] A pressure relief valve is a mechanical safety device used in industrial equipment, construction, transportation, and energy industries to automatically control system pressure. It has overpressure protection and pressure maintenance functions. The elastic retaining ring installed inside the valve has the functions of sealing and regulating pressure. Therefore, during the assembly of the pressure relief valve, the elastic retaining ring needs to be stably installed inside the valve to ensure the reliable performance of the elastic retaining ring.

[0003] Chinese patent CN219562903U discloses a device for pressing in an elastic retaining ring into a pressure relief valve orifice. The key technical features are: a push rod, a guide sleeve, and a conical sleeve. The push rod is a stepped guide post with three stages. The conical sleeve has an outer cylindrical body and an inner frustum-shaped cavity. The guide sleeve is a cap-shaped structure with a central hole and a door frame-shaped longitudinal section. The guide sleeve can be fitted onto the conical sleeve. The diameter of the second stage post of the push rod is smaller than the minimum orifice diameter of the guide sleeve, the diameter of the third stage post of the push rod is larger than the minimum orifice diameter of the guide sleeve, the diameter of the first stage post of the push rod is smaller than the inner diameter of the retaining ring, and the diameter of the second stage post of the push rod is larger than the inner diameter of the retaining ring. This invention achieves mechanical pressing of an elastic retaining ring into a pressure relief valve orifice, allowing the retaining ring to be installed intact into the groove without damaging the parts, thus reducing the operator's workload.

[0004] Existing technologies often have the following drawbacks: when using the elastic retaining ring pressing device to press the gasket and retaining ring into the pressure relief valve hole, a large force is often required to be applied to the first-stage rod, which can easily cause the first-stage rod to tilt when pressing the gasket in, resulting in poor pressing effect of the gasket and retaining ring.

[0005] Therefore, this utility model provides a device for pressing in an elastic retaining ring into a pressure relief valve orifice. Utility Model Content

[0006] The purpose of this invention is to solve the problem that in the existing technology, when using an elastic retaining ring pressing device for a pressure relief valve orifice to press the gasket and retaining ring into the pressure relief valve orifice, a large force is often required to be applied to the first-stage rod, which easily leads to the first-stage rod tilting when pressing the gasket in, resulting in poor pressing effect of the gasket and retaining ring. Therefore, this invention proposes an elastic retaining ring pressing device for a pressure relief valve orifice.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a pressure relief valve orifice elastic retaining ring pressing device, comprising a pressure relief valve body, a spring installed inside the pressure relief valve body, a gasket installed at the end of the spring away from the pressure relief valve body, the gasket abutting against the spring, a retaining ring body installed on the side of the gasket away from the spring, a conical sleeve fitted on the surface of the pressure relief valve body, a guide sleeve fitted on the surface of the conical sleeve, a three-stage rod installed inside the guide sleeve, the three-stage rod slidably connected to the inner wall of the gasket, a two-stage rod fixedly connected at the end of the three-stage rod away from the pressure relief valve body, the two-stage rod pressing against the side of the retaining ring body away from the gasket, a first-stage rod installed on the side of the two-stage rod away from the three-stage rod, a sliding ring slidably connected to the surface of the conical sleeve, a first elastic plate and a second elastic plate fixedly connected to the lower surface of the sliding ring, and a first arc plate and a second arc plate respectively fixedly connected to the side of the first elastic plate and the second elastic plate away from the sliding ring.

[0008] The effect achieved by the above components is that after the cone sleeve is fitted onto the surface of the pressure relief valve body, the position of the cone sleeve relative to the pressure relief valve body can be restricted by the first arc plate, the second arc plate, the first elastic plate, the second elastic plate, and the sliding ring.

[0009] Preferably, the first elastic plate and the second elastic plate are axially symmetrically distributed relative to the pressure relief valve body, and a pad is fixedly connected to the side of the first arc plate and the second arc plate that are close to each other.

[0010] The effect achieved by the above components is that the symmetrically distributed first and second elastic plates can improve the effect of the first and second arc plates on restricting the position of the first and second elastic plates.

[0011] Preferably, the pad is made of rubber.

[0012] The effect achieved by the above components is that the rubber pad can improve the position restriction effect by increasing friction.

[0013] Preferably, a first limiting block and a second limiting block are fixedly connected to the surface of the tapered sleeve, and the first limiting block and the second limiting block are respectively installed on the upper and lower surfaces of the sliding ring.

[0014] The effect achieved by the above components is that, through the setting of the first and second limiting blocks, the sliding ring can maintain a stable connection with the tapered sleeve while moving relative to the tapered sleeve.

[0015] Preferably, the inner wall of the first arc plate is rotatably connected to two fastening screws, and both fastening screws are threaded into the inner wall of the second arc plate.

[0016] The effect achieved by the above components is that the distance between the first arc plate and the second arc plate can be adjusted by the fastening screw.

[0017] Preferably, a rotating plate is fixedly connected to one end of the fastening screw near the first arc plate. The rotating plate is installed on the side of the first arc plate away from the second arc plate. A limiting plate is installed on the side of the second arc plate away from the first arc plate. The limiting plate is fixedly connected to the end of the fastening screw away from the rotating plate.

[0018] The effect achieved by the above components is that when it is necessary to rotate the fastening screw, the fastening screw can be easily controlled by the rotating plate, and the setting limit plate can prevent the fastening screw from separating from the second arc plate.

[0019] Preferably, a connecting post is fixedly connected to one end of the secondary rod near the primary rod. The connecting post is installed inside the primary rod. The inner wall of the primary rod has an internal thread, and the surface of the connecting post has an external thread. The external thread on the connecting post matches the internal thread on the primary rod. Two baffles are fixedly connected to one end of the primary rod near the secondary rod.

[0020] The effect achieved by the above components is that, through the connecting post, external thread and internal thread, the secondary rod can be easily retracted into the primary rod, while the baffle can prevent the connecting post from detaching from the primary rod.

[0021] In summary:

[0022] 1. In this utility model, by setting a sliding ring, a first elastic plate, a second elastic plate, a first arc plate, and a second arc plate, the relative position between the cone sleeve and the pressure relief valve body can be restricted after the cone sleeve is installed on the pressure relief valve body, thereby avoiding as much as possible the situation where the pressing accuracy and effect of the gasket and the retaining ring are affected by the tilting of the first stage rod under force when pressing down the gasket and the retaining ring.

[0023] 2. In this utility model, the connecting column allows the secondary rod to be stored inside the primary rod when the pressure relief valve orifice elastic retaining ring pressing device is not needed or is not carried, thus facilitating the storage of the pressure relief valve orifice elastic retaining ring pressing device and improving its portability. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0026] Figure 3 This utility model Figure 1 A schematic diagram of a partial structure;

[0027] Figure 4 This utility model Figure 2 Enlarged view of point A;

[0028] Figure 5 This utility model Figure 2 Enlarged view of point B.

[0029] Legend: 1. Pressure relief valve body; 2. Spring; 3. Gasket; 4. Retaining ring body; 5. Conical sleeve; 6. Guide sleeve; 7. First-stage rod; 8. Second-stage rod; 9. Third-stage rod; 10. First limiting block; 11. Second limiting block; 12. Sliding ring; 13. First elastic plate; 14. Second elastic plate; 15. First arc plate; 16. Second arc plate; 17. Pad; 18. Fastening screw; 19. Limiting plate; 20. Rotating plate; 21. Connecting column; 22. Baffle; 23. External thread; 24. Internal thread. Detailed Implementation

[0030] Reference Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a technical solution: a pressure relief valve orifice elastic retaining ring pressing device, including a pressure relief valve body 1, a spring 2 installed inside the pressure relief valve body 1, a gasket 3 installed at the end of the spring 2 away from the pressure relief valve body 1, the gasket 3 abutting against the spring 2, a retaining ring body 4 installed on the side of the gasket 3 away from the spring 2, a conical sleeve 5 fitted on the surface of the pressure relief valve body 1, a guide sleeve 6 fitted on the surface of the conical sleeve 5, a three-stage rod 9 installed inside the guide sleeve 6, the three-stage rod 9 slidably connected to the inner wall of the gasket 3, a two-stage rod 8 fixedly connected at the end of the three-stage rod 9 away from the pressure relief valve body 1, the two-stage rod 8 pressing against the side of the retaining ring body 4 away from the gasket 3, a first-stage rod 7 installed on the side of the two-stage rod 8 away from the three-stage rod 9, a sliding ring 12 slidably connected to the surface of the conical sleeve 5, a first elastic plate 13 and a second elastic plate 14 fixedly connected to the lower surface of the sliding ring 12, a first arc plate 15 and a second arc plate 16 respectively fixedly connected to the side of the first elastic plate 13 and the second elastic plate 14 away from the sliding ring 12. After the cone sleeve 5 is fitted onto the surface of the pressure relief valve body 1, the position of the cone sleeve 5 relative to the pressure relief valve body 1 can be restricted by the first arc plate 15, the second arc plate 16, the first elastic plate 13, the second elastic plate 14, and the slip ring 12.

[0031] The following is a detailed explanation of its overall setup and function.

[0032] Reference Figures 1-5As shown in this embodiment: the first elastic plate 13 and the second elastic plate 14 are symmetrically distributed axially relative to the pressure relief valve body 1. A pad 17 is fixedly connected to the side of the first arc plate 15 and the second arc plate 16 that are close to each other. The symmetrical distribution of the first elastic plate 13 and the second elastic plate 14 can improve the positional restriction effect of the first arc plate 15 and the second arc plate 16 on the first elastic plate 13 and the second elastic plate 14. The pad 17 is made of rubber. The rubber pad 17 can improve the positional restriction effect by increasing friction. A first limiting block 10 and a second limiting block 11 are fixedly connected to the surface of the cone sleeve 5. The first limiting block 10 and the second limiting block 11 are respectively installed on the upper and lower surfaces of the sliding ring 12. By setting the first limiting block 10 and the second limiting block 11, the sliding ring 12 can maintain a stable connection with the cone sleeve 5 while moving relative to it. Two fastening screws 18 are rotatably connected to the inner wall of the first arc plate 15, and both fastening screws 18 are threaded into the inner wall of the second arc plate 16. The distance between the first arc plate 15 and the second arc plate 16 can be adjusted by using the fastening screw 18. A rotating plate 20 is fixedly connected to the end of the fastening screw 18 closest to the first arc plate 15. The rotating plate 20 is installed on the side of the first arc plate 15 away from the second arc plate 16. A limiting plate 19 is installed on the side of the second arc plate 16 away from the first arc plate 15, and the limiting plate 19 is fixedly connected to the end of the fastening screw 18 away from the rotating plate 20. When it is necessary to rotate the fastening screw 18, the rotating plate 20 can be used to easily control the fastening screw 18, while the limiting plate 19 prevents the fastening screw 18 from separating from the second arc plate 16.

[0033] A connecting post 21 is fixedly connected to the end of the secondary rod 8 near the primary rod 7. The connecting post 21 is installed inside the primary rod 7. The inner wall of the primary rod 7 has an internal thread 24, and the surface of the connecting post 21 has an external thread 23. The external thread 23 on the connecting post 21 matches the internal thread 24 on the primary rod 7. Two baffles 22 are fixedly connected to the end of the primary rod 7 near the secondary rod 8. Through the connecting post 21, the external thread 23, and the internal thread 24, the secondary rod 8 can be easily retracted into the primary rod 7, while the baffles 22 can prevent the connecting post 21 from detaching from the primary rod 7.

[0034] Working principle: When the pressure relief valve orifice needs to be pressed into the pressure relief valve body 1 using the elastic retaining ring pressing device, the spring 2 is first placed into the pressure relief valve body 1. Then, the shim 3 and retaining ring body 4 are moved into the pressure relief valve body 1 in sequence. After that, the cone sleeve 5 is moved so that it fits onto the pressure relief valve body 1. The rotating plate 20 is rotated, which drives the fastening screw 18 to rotate, thereby adjusting the first arc plate 15 and the second arc plate 16 away from each other, so that the second arc plate 16 is close to the limiting plate 19, releasing the restriction on the position of the sliding ring 12. The sliding ring 12 is released, and under the action of gravity, it slides on the surface of the cone sleeve 5. The sliding ring 12 moves away from the first limiting block 10 and closer to the second limiting block 11. Then, the fastening screw 18 is rotated so that the first arc plate 15 and the second arc plate 16 are moved away from the first limiting block 10 and closer to the second limiting block 11. The first arc plate 15 and the second arc plate 16 drive the pad 17 closer to the pressure relief valve body 1, restricting the position of the cone sleeve 5 relative to the pressure relief valve body 1, and installing the guide sleeve 6 onto the surface of the cone sleeve 5. Then, the second-stage rod 8 and the third-stage rod 9 are rotated, causing the connecting column 21 to rotate relative to the first-stage rod 7. During this process, the external thread 23 on the connecting column 21 engages with the internal thread 24 on the first-stage rod 7, completing the process of moving the third-stage rod 9 away from the first-stage rod 7. When the connecting column 21 presses against the surface of the baffle 22, the first-stage rod 7 is moved, causing the third-stage rod 9 to be inserted into the pad 3 and the retaining ring body 4, and the second-stage rod 8 to press against the surface of the retaining ring body 4. Then, the first-stage rod 7 is pushed to control the movement of the pad 3 and the retaining ring body 4, completing the pressing process of both. By using the sliding ring 12, the first elastic plate 13, the second elastic plate 14, the first arc plate 15, and the second arc plate 16, the relative position between the cone sleeve 5 and the pressure relief valve body 1 can be restricted after the cone sleeve 5 is installed on the pressure relief valve body 1. This minimizes the possibility that the pressure relief valve orifice elastic retaining ring pressing device will be tilted due to force when pressing down the gasket 3 and the retaining ring, thus affecting the pressing accuracy and effect of the gasket 3 and the retaining ring. The connecting post 21 allows the second-stage rod 8 to be stored inside the first-stage rod 7 when the pressure relief valve orifice elastic retaining ring pressing device is not needed or is not carried, thus facilitating the storage of the pressure relief valve orifice elastic retaining ring pressing device and improving its portability.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A pressure relief valve orifice elastic retaining ring pressing device, comprising a pressure relief valve body (1), wherein a spring (2) is installed inside the pressure relief valve body (1), a gasket (3) is installed at the end of the spring (2) away from the pressure relief valve body (1), the gasket (3) abuts against the spring (2), a retaining ring body (4) is installed on the side of the gasket (3) away from the spring (2), a conical sleeve (5) is fitted on the surface of the pressure relief valve body (1), a guide sleeve (6) is fitted on the surface of the conical sleeve (5), a three-stage rod (9) is installed inside the guide sleeve (6), the three-stage rod (9) is slidably connected to the inner wall of the gasket (3), a two-stage rod (8) is fixedly connected at the end of the three-stage rod (9) away from the pressure relief valve body (1), and the two-stage rod (8) abuts against the side of the retaining ring body (4) away from the gasket (3), characterized in that: A first-level rod (7) is installed on the side of the second-level rod (8) away from the third-level rod (9). A sliding ring (12) is slidably connected to the surface of the cone sleeve (5). A first elastic plate (13) and a second elastic plate (14) are fixedly connected to the lower surface of the sliding ring (12). A first arc plate (15) and a second arc plate (16) are fixedly connected to the side of the first elastic plate (13) and the second elastic plate (14) away from the sliding ring (12), respectively.

2. The pressure relief valve orifice press-fit device according to claim 1, characterized in that: The first elastic plate (13) and the second elastic plate (14) are axially symmetrically distributed relative to the pressure relief valve body (1), and the first arc plate (15) and the second arc plate (16) are fixedly connected to the side of each other.

3. The pressure relief valve orifice press-fit device according to claim 2, characterized in that: The pad (17) is made of rubber.

4. The pressure relief valve orifice elastic retaining ring pressing device according to claim 1, characterized in that: The surface of the cone sleeve (5) is fixedly connected with a first limiting block (10) and a second limiting block (11), and the first limiting block (10) and the second limiting block (11) are respectively installed on the upper and lower surfaces of the sliding ring (12).

5. The pressure relief valve orifice elastic retaining ring pressing device according to claim 1, characterized in that: The inner wall of the first arc plate (15) is rotatably connected to two fastening screws (18), and both fastening screws (18) are threaded into the inner wall of the second arc plate (16).

6. The pressure relief valve orifice press-fit device according to claim 5, characterized in that: A rotating plate (20) is fixedly connected to one end of the fastening screw (18) near the first arc plate (15). The rotating plate (20) is installed on the side of the first arc plate (15) away from the second arc plate (16). A limiting plate (19) is installed on the side of the second arc plate (16) away from the first arc plate (15). The limiting plate (19) is fixedly connected to the end of the fastening screw (18) away from the rotating plate (20).

7. The pressure relief valve orifice press-fit device according to claim 6, characterized in that: The secondary rod (8) is fixedly connected to a connecting column (21) at one end near the primary rod (7). The connecting column (21) is installed inside the primary rod (7). The inner wall of the primary rod (7) is provided with an internal thread (24). The surface of the connecting column (21) is provided with an external thread (23). The external thread (23) on the connecting column (21) matches the internal thread (24) on the primary rod (7). Two baffles (22) are fixedly connected to one end of the primary rod (7) near the secondary rod (8).

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