A high-efficiency sealing ring replacement auxiliary device for valve

Abstract

This utility model relates to an efficient auxiliary device for replacing valve seal rings, comprising a base plate, a support part, a drive part, and an auxiliary replacement part. The drive part is connected to the support part. The auxiliary replacement part includes an insert plate, a fixing member, and an elastic member. The insert plate has a first state bent at an obtuse angle and a second state bent at an acute angle. When the insert plate changes from the first state to the second state, it can remove the seal ring from the valve. A transmission assembly is provided between the auxiliary replacement part and the support part, which can transmit the driving force of the drive part to the auxiliary replacement part to drive the insert plate to rotate relative to the valve around the seal ring. This efficient auxiliary device for replacing valve seal rings, through the control of the drive part, allows the support part to move closer to or further away from the auxiliary replacement part as needed, thereby ensuring that the insert plate can be accurately inserted between the valve and the seal ring, improving operational accuracy and reducing the risk of damage caused by human factors.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an efficient auxiliary device for replacing valve seals. Background Technology

[0002] In industrial fluid control systems, valve sealing performance is a key factor in ensuring the safe and efficient operation of the system. As the core sealing element of a valve, the sealing ring is subject to long-term effects from fluid pressure, temperature changes, and mechanical vibrations, requiring periodic replacement to maintain the valve's sealing performance. However, existing sealing ring disassembly methods and techniques have many limitations, posing significant challenges to maintenance work.

[0003] Currently, the removal of sealing rings typically relies on manual operation using simple tools such as pry bars and screwdrivers. This method is not only inefficient but also prone to damaging the sealing rings and valves during the process. Manual disassembly often results in uneven force due to a lack of precise control, potentially deforming or damaging the sealing rings, or even scratching the valve's sealing surface, affecting its sealing performance. Furthermore, manual operation requires operators to possess certain experience and skills; otherwise, improper operation can easily lead to disassembly failure or even safety accidents.

[0004] Besides the limitations of manual operation, existing auxiliary disassembly tools also have significant shortcomings. Most of these tools have simple structures and limited functions, making them unable to automate operations. During disassembly, these tools often fail to provide sufficient stability and reliability, easily becoming stuck or slipping, further reducing disassembly efficiency. These problems not only increase maintenance costs and workload but may also lead to prolonged equipment downtime, impacting production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an efficient auxiliary device for replacing valve sealing rings, which aims to improve the efficiency of disassembling and replacing sealing rings.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-efficiency valve sealing ring replacement auxiliary device is provided, comprising: a base plate, a support part, a drive part, and an auxiliary replacement part disposed on the base plate for supporting the valve, wherein the support part is located upstream of the auxiliary replacement part, the drive part is connected to the support part, and the drive part is used to drive the support part to move closer to or away from the auxiliary replacement part; The auxiliary replacement part includes a plate that can be inserted between the valve and the sealing ring, and an elastic member that connects a fixing member and the plate at both ends respectively. The plate has a first state bent at an obtuse angle and a second state bent at an acute angle. When the plate changes from the first state to the second state, it can remove the sealing ring from the valve. The elastic member is used to drive the plate in the second state back to the first state. A transmission assembly is provided between the auxiliary replacement part and the support part. When the support part reaches a preset position, the transmission assembly can transmit the driving force of the drive part to the auxiliary replacement part to drive the insert plate to rotate around the sealing ring relative to the valve.

[0007] Furthermore, the insert plate includes a first folding plate disposed on the fixing member for support and a second folding plate for disassembly. The second folding plate is hinged to one end of the first folding plate. One end of the elastic member is connected to the fixing member, and the other end of the elastic member is connected to the second folding plate.

[0008] Furthermore, the transmission assembly includes a connecting cylinder disposed on the support base and extending outward, a gear disposed on the connecting cylinder, and an external gear ring rotatably disposed on the fixing member. The connecting cylinder is constrained on the support base by a buffer assembly. The gear meshes with the external gear ring. The insert plate is disposed on the side of the external gear ring near the valve. The gear is rotatably disposed on the drive unit.

[0009] Furthermore, the base plate is provided with a limiting block for restricting the movement of the support base. When the support base contacts the limiting block, the buffer assembly drives the connecting cylinder to break away from the restriction of the support base and can rotate relative to the support base under the drive of the driving part.

[0010] Furthermore, the buffer assembly includes a slider slidably disposed within the support base, and a limiting rod slidably disposed on the slider at one end. The limiting rod is disposed within the support base, and the other end of the limiting rod is inserted into a connecting cylinder connecting the gear in a direction perpendicular to the slider. A first spring is disposed at one end of the slider, and a second spring is disposed at the other end of the slider. When the support base contacts the limiting block, the first spring is compressed, causing the slider to slide toward the support base, so that one end of the limiting rod enters the limiting groove on the slider, and the other end of the limiting rod disengages from the connecting cylinder. The second spring is used for the elastic reset of the slider.

[0011] Furthermore, the fixing member includes two support columns disposed on the base plate and located on two opposite sides of the external gear ring. A groove for sliding of the external gear ring is provided on the opposite side of the support column, and a guide portion for guiding the sliding of the external gear ring is provided in the groove.

[0012] Furthermore, the guide portion includes an arc-shaped guide member disposed on the inner wall of the groove, and a guide groove is provided on the outer gear ring corresponding to the arc-shaped guide member.

[0013] Furthermore, the drive unit includes a drive motor mounted on the base plate and a drive screw connected to the power output end of the drive motor. The drive screw is threadedly connected to the support base, the connecting cylinder, and the gear.

[0014] The advantages of this utility model in providing an efficient auxiliary device for replacing valve seals are as follows: Compared with existing technologies, this utility model provides a highly efficient valve seal ring replacement auxiliary device. Through precise control of the drive unit, the support unit can be moved closer to or further away from the auxiliary replacement unit as needed, thereby ensuring that the slide block can be accurately inserted between the valve and the seal ring. This design not only improves operational accuracy but also reduces manual intervention and lowers the risk of damage caused by human factors. Furthermore, the slide block's shape-changing design (from obtuse to acute angle) effectively applies force to remove the seal ring from the valve, while the elastic element's reset function ensures that the slide block automatically returns to its initial state, ready for the next operation. This automated disassembly and reset process significantly improves the efficiency of seal ring replacement, reducing maintenance time and labor intensity.

[0015] Furthermore, the transmission assembly precisely transmits power to the auxiliary replacement unit, driving the slide plate to rotate relative to the valve around the sealing ring. This transmission mechanism not only achieves efficient power transmission but also ensures smooth movement of the slide plate during disassembly. Compared to manual operation or simple tools in existing technologies, this automated power transmission method significantly improves disassembly efficiency and reduces the instability and risks associated with manual operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of an efficient valve sealing ring replacement auxiliary device provided for an embodiment of this utility model; Figure 2 An assembly diagram of the support and transmission components provided in this embodiment of the utility model; Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 A schematic diagram of the structure of the auxiliary replacement part provided in an embodiment of this utility model; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the drive unit provided in an embodiment of the present utility model.

[0018] In the diagram: 1. Base plate; 11. Slide groove; 12. Limiting block; 2. Support base; 21. Receiving groove; 3. Drive unit; 31. Drive motor; 32. Drive screw; 4. Auxiliary replacement unit; 41. Insert plate; 411. First folding plate; 412. Second folding plate; 42. Compression spring; 43. Support column; 431. Groove; 44. Arc-shaped guide; 5. Transmission assembly; 51. Connecting cylinder; 52. Gear; 53. External gear ring; 531. Guide groove; 6. Buffer assembly; 61. Slider; 611. Limiting groove; 62. Limiting rod; 63. First spring; 64. Second spring; 65. Contact block. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this embodiment clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this embodiment and are not intended to limit this embodiment.

[0020] Please refer to the following: Figures 1 to 7 This embodiment describes a highly efficient valve seal ring replacement auxiliary device. The device includes a base plate 1, a support portion for supporting the valve, a drive portion 3, and an auxiliary replacement portion 4, all disposed on the base plate 1. The support portion is located upstream of the auxiliary replacement portion 4, and the drive portion 3 is connected to the support portion, and the drive portion 3 is used to drive the support portion closer to or further away from the auxiliary replacement portion 4.

[0021] The auxiliary replacement unit 4 includes a plate 41 that can be inserted between the valve and the sealing ring, and an elastic member that connects the fixing member and the plate 41 at both ends respectively. The plate 41 has a first state bent at an obtuse angle and a second state bent at an acute angle. When the plate 41 changes from the first state to the second state, the plate 41 can remove the sealing ring from the valve. The elastic member is used to drive the plate 41 in the second state to return to the first state.

[0022] In addition, a transmission assembly 5 is provided between the auxiliary replacement part 4 and the support part. When the support part reaches the preset position, the transmission assembly 5 can transmit the driving force of the drive part 3 to the auxiliary replacement part 4 to drive the slide plate 41 to rotate relative to the valve around the sealing ring.

[0023] The valve seal ring replacement auxiliary device of this embodiment significantly improves the efficiency and reliability of seal ring removal through its unique structural design. The device includes a base plate 1, a support unit, a drive unit 3, and an auxiliary replacement unit 4. These parts work together to achieve efficient seal ring removal. The support unit provides stable support to the valve, ensuring its stability during removal. The drive unit 3, through precise control, allows the support unit to move closer to or further away from the auxiliary replacement unit 4 as needed, thereby providing precise positional adjustment for the insertion and operation of the insert plate 41. This design not only improves operational accuracy but also reduces manual intervention, lowering the risk of damage due to human error.

[0024] The auxiliary replacement unit 4 is one of the core innovations of this invention. Its insert plate 41 can be inserted between the valve and the sealing ring, and the sealing ring can be disassembled through shape change. The insert plate 41 has two states: an obtuse angle state and an acute angle state. In the obtuse angle state, the insert plate 41 can be smoothly inserted between the valve and the sealing ring; while in the acute angle state, the insert plate 41 can apply appropriate force to remove the sealing ring from the valve. This design not only improves the efficiency of disassembly, but also ensures the smoothness and reliability of the disassembly process. The addition of an elastic element further optimizes this process, which can automatically return the insert plate 41 to the obtuse angle state after disassembly, preparing it for the next operation.

[0025] The design of the transmission assembly 5 is key to achieving this efficient disassembly process. Through the power output of the drive unit 3, the transmission assembly 5 precisely transmits power to the auxiliary replacement unit 4, driving the slide plate 41 to rotate relative to the valve around the sealing ring. This transmission mechanism not only achieves efficient power transmission but also ensures smooth movement of the slide plate 41 during disassembly. Compared to manual operation or simple tools in the prior art, this automated power transmission method significantly improves disassembly efficiency and reduces the instability and risks caused by manual operation. Through this design, the present invention not only improves the efficiency and reliability of sealing ring disassembly but also significantly reduces operational difficulty and labor intensity, providing an efficient and reliable solution for the disassembly of industrial valve sealing rings.

[0026] Based on the overall description of the above structure, an exemplary structure of an efficient valve sealing ring replacement auxiliary device in this embodiment is as follows: Figure 1 and Figure 7 As shown, the drive unit 3 includes a drive motor 31 mounted on the base plate 1 and a drive screw 32 connected to the power output end of the drive motor 31. The drive screw 32 extends along the length direction of the base plate 1. The support part is connected to the drive screw 32 and can be driven by the drive screw 32 to slide along the length direction of the base plate 1, thereby moving to the auxiliary replacement part 4 to facilitate the replacement of the sealing ring.

[0027] In this embodiment, as Figure 2 As shown, the upper part of the support base 2 is provided with a receiving groove 21 for accommodating the valve. The size of the receiving groove 21 is the same as the size of the middle part of the valve body. When the valve is placed in the receiving groove 21, the receiving groove 21 can just hold the valve in place and prevent the valve from falling off.

[0028] Furthermore, in this embodiment, the support base 2 is initially driven by the drive screw 32 to slide closer to the auxiliary replacement part 4. After reaching the preset position, the support base 2 stops moving, but the transmission component 5 is driven by the drive screw 32 to rotate, thereby driving the auxiliary replacement part 4 to work. The automated design of the transmission component 5 makes the entire disassembly process smoother and more efficient. The operator only needs to place the valve on the support part and start the drive part 3 to complete the disassembly of the sealing ring, significantly reducing the number of operation steps and lowering the difficulty of operation.

[0029] To ensure the smooth implementation of the above conversion process, this embodiment, as a preferred implementation method, includes... Figures 2 to 4As shown, the transmission assembly 5 includes a connecting cylinder 51 that is mounted on the support base 2 and extends outward. A gear 52 is mounted on the connecting cylinder 51, and an external gear ring 53 that is rotatably mounted on a fixed member. The connecting cylinder 51 is restricted to the support base 2 by a buffer assembly 6. The gear 52 meshes with the external gear ring 53. An insert plate 41 is mounted on the external gear ring 53 on the side near the valve. The gear 52 and the connecting cylinder 51 are threadedly connected to the drive screw 32 on the drive unit 3.

[0030] By installing a connecting cylinder 51 and a gear 52 on the support base 2, which mesh with the external gear ring 53, the device can automatically transmit the power of the drive unit 3 to the auxiliary replacement unit 4 when the support reaches the preset position, thereby driving the insert plate 41 to rotate relative to the valve around the sealing ring. This transmission mechanism not only achieves efficient power transmission but also ensures smooth movement of the insert plate 41 during disassembly. Compared with manual operation or simple tools in the prior art, this automated power transmission method significantly improves disassembly efficiency and reduces the instability and risks caused by manual operation.

[0031] Meanwhile, a limiting block 12 is provided on the base plate 1 to restrict the movement of the support base 2. When the support base 2 contacts the limiting block 12, the buffer assembly 6 drives the connecting cylinder 51 to disengage from the restriction of the support base 2 and can rotate relative to the support base 2 under the drive of the driving part 3. Specifically, the limiting block 12 is disposed in the slide groove 11 on the base plate 1 for the support base 2 to slide, and the aforementioned buffer assembly 6 is disposed at the bottom of the support base 2 and can contact the limiting block 12.

[0032] When the support base 2 contacts the limiting block 12, the transmission component 5, under the action of the buffer component 6, automatically drives the connecting cylinder 51 to disengage from the support base 2 and rotates relative to the support base 2 under the drive of the drive unit 3. This design not only avoids potential impact damage during operation but also ensures stable operation of the device under different working conditions. Compared with existing technologies, this buffering mechanism significantly improves the durability and reliability of the device and reduces maintenance costs and downtime.

[0033] As a preferred implementation method, such as Figure 3 and Figure 4As shown, the buffer assembly 6 includes a slider 61 slidably disposed within the support base 2, and a limiting rod 62 slidably disposed on the slider 61 at one end. The limiting rod 62 is disposed within the support base 2, and the other end of the limiting rod 62 is inserted into the connecting cylinder 51 of the connecting gear 52 in a direction perpendicular to the slider 61. A first spring 63 is disposed at one end of the slider 61, and a second spring 64 is disposed at the other end of the slider 61. When the support base 2 contacts the limiting block 12, the first spring 63 is compressed, causing the slider 61 to slide toward the support base 2, so that one end of the limiting rod 62 enters the limiting groove 611 on the slider 61, and the other end of the limiting rod 62 disengages from the connecting cylinder 51. The second spring 64 is used for the elastic reset of the slider 61.

[0034] Specifically, such as Figure 4 As shown, the slider 61 is slidably disposed within the support base 2, and a first spring 63 is provided at the end of the slider 61. A contact block 65 is provided at the free end of the first spring 63. When the support base 2 slides along the slide groove 11, the contact block 65 first contacts the limiting block 12. As the support base 2 slides, the first spring 63 is compressed until the support base 2 contacts the limiting block 12 and stops moving. At this time, under the elastic action of the first spring 63, the slider 61 slides towards the inside of the support base 2, and the limiting rod 62 gradually enters the limiting groove 611 provided on the slider 61 as the slider 61 slides. The second spring 64 is compressed and begins to store energy. The upper end of the limiting rod 62 that has entered the limiting groove 611 disengages from the connecting cylinder 51, releasing the restriction on the connecting cylinder 51. At this time, as the drive screw 32 continues to rotate, the connecting cylinder 51 and the gear 52 begin to rotate with the drive screw 32, thus realizing the power transmission process.

[0035] In this embodiment, by setting a slider 61 and a limiting rod 62 inside the support base 2, and utilizing the elastic action of the first spring 63, the device can automatically adjust the position of the limiting rod 62 when the support base 2 contacts the limiting block 12, thereby realizing the disengagement and rotation of the connecting cylinder 51. This design not only ensures the smooth transition of the transmission component 5 during operation, but also improves the overall stability and reliability of the device. Compared with the simple mechanical structure in the prior art, the buffer component of this utility model can effectively absorb the impact force generated when the support base 2 contacts the limiting block 12 through the elastic action of the first spring 63 and the second spring 64, protecting the transmission component from damage and extending the service life of the device.

[0036] The flexible movement of the limit rod 62 and the elastic return function of the spring enable the connecting cylinder 51 to accurately disengage and return to its original position, thereby achieving precise power transmission. This design not only improves the adaptability of the device under different operating conditions but also ensures the smoothness and accuracy of the disassembly process, reducing the risk of seal damage caused by unstable transmission. Furthermore, the design of the buffer assembly makes the entire disassembly process more automated and efficient. The operator only needs to place the valve on the support and activate the drive unit 3, and the device will automatically complete the disassembly of the seal. Compared with manual operation or simple tools in the prior art, this automated buffer mechanism significantly reduces operating steps, lowers the operational difficulty, improves disassembly efficiency, and further enhances the practicality and competitiveness of the device.

[0037] As a preferred embodiment, the specific structure of the auxiliary replacement unit 4 can be referred to Figure 1 and Figure 5 As shown, the fixing member is located upstream of the support base 2, and an external gear ring 53 is provided in the middle of the fixing member. A plate 41 and an elastic member are provided on the side of the external gear ring 53 near the valve.

[0038] Among them, as a preferred option, refer to Figure 5 and Figure 6 As shown, the fastener includes two support columns 43 disposed on the base plate 1 and located on two opposite sides of the outer gear ring 53. A groove 431 for sliding of the outer gear ring 53 is provided on the opposite side of the support column 43, and a guide portion for guiding the sliding of the outer gear ring 53 is provided in the groove 431.

[0039] By setting two support columns 43 on the base plate 1 and providing a groove 431 for the external gear ring 53 to slide on the opposite side of the support columns 43, this device can effectively guide the movement of the external gear ring 53, ensuring its stability and accuracy during disassembly. This design not only improves the reliability of the device but also reduces the risk of seal damage caused by unstable movement of the external gear ring 53. Compared with the simple support structure in the prior art, this fastener design significantly improves the overall performance and service life of the device.

[0040] As a specific preferred implementation method, such as Figure 6 As shown, the guide part includes an arc-shaped guide 44 disposed on the inner wall of the groove 431, and a guide groove 531 is provided on the outer gear ring 53 corresponding to the arc-shaped guide 44.

[0041] By providing an arc-shaped guide 44 on the inner wall of the groove 431 and a corresponding guide groove 531 on the outer gear ring 53, this device ensures that the outer gear ring 53 maintains the correct orientation and position during sliding. This design not only improves the reliability of the device but also reduces the risk of seal ring damage caused by deviations in the movement of the outer gear ring 53. Compared with the simple sliding structure in the prior art, this guide design significantly improves the accuracy and stability of the device, further enhancing the efficiency and quality of seal ring disassembly.

[0042] And as a preferred option, it is still referred to Figure 6 As shown, the insert plate 41 includes a first folding plate 411 disposed on the fixing member for support and a second folding plate 412 for disassembly. The second folding plate 412 is hinged to one end of the first folding plate 411. One end of the elastic member is connected to the fixing member, and the other end of the elastic member is connected to the second folding plate 412.

[0043] The elastic element is preferably a compression spring 42. By dividing the insert plate 41 into a first folding plate 411 and a second folding plate 412 and connecting them with a hinge, the shape of the insert plate 41 can be changed more flexibly. This design not only enhances the adaptability of the insert plate 41, allowing it to better accommodate sealing rings of different sizes, but also increases the service life of the insert plate 41. The connection method of the elastic element further ensures the stability of the insert plate 41 during disassembly and reassembly, reducing possible jamming or slippage during operation. Compared with the simple pry bar or screwdriver in the prior art, this design significantly improves the reliability and safety of the disassembly process and reduces the reliance on the operator's experience and skills.

[0044] In actual operation, the valve is first securely placed on the support. Then, the drive unit 3 is activated, and the movement of the support unit is controlled by the drive screw 32, bringing it closer to the auxiliary replacement unit 4. When the support unit reaches the preset position, the transmission assembly 5 begins to operate. At this time, the power of the drive unit 3 is transmitted to the gear 52 on the connecting cylinder 51 via the drive screw 32. During the power transmission process, the buffer assembly 6 plays a crucial role. When the support unit contacts the limiting block 12, the first spring 63 is compressed, causing the slider 61 to slide towards the support base 2, so that one end of the limiting rod 62 enters the limiting groove 611 on the slider 61, and the other end disengages from the connecting cylinder 51. This action releases the restriction on the connecting cylinder 51, allowing it to rotate freely. Subsequently, the gear 52 meshes with the external gear ring 53, transmitting power to the external gear ring 53. The rotation of the external gear ring 53 causes the insert plate 41 to rotate around its axis. As the support base 2 slides, the head of the insert plate 41 gradually inserts between the sealing ring and the valve, thus transforming the insert plate 41 from an obtuse angle to an acute angle. With the change in shape of the insert plate 41, an appropriate force is applied to detach the sealing ring from the valve. During this process, the elastic element is stretched, storing elastic potential energy.

[0045] After disassembly, the elastic element releases its stored energy, driving the insert plate 41 to return from an acute angle to an obtuse angle. At this time, the buffer assembly 6 functions again. The second spring 64 releases energy, pushing the slider 61 to slide in the opposite direction, causing the limit rod 62 to re-insert into the connecting cylinder 51, restoring the restriction on the connecting cylinder 51. This design not only absorbs the impact force and protects the transmission assembly 5 from damage, but also ensures the stable operation of the transmission assembly 5 under different working conditions.

[0046] Finally, drive unit 3 restarts, controlling the movement of the support unit away from auxiliary replacement unit 4. The operator then removes the disassembled sealing ring, completing the entire disassembly process.

[0047] The above description is only a preferred embodiment of this embodiment and is not intended to limit this embodiment. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this embodiment should be included within the protection scope of this embodiment.

Claims

1. A highly efficient auxiliary device for replacing valve seals, characterized in that, Includes a base plate (1), a support part, a drive part (3) and an auxiliary replacement part (4) for supporting the valve are provided on the base plate (1), the support part is located upstream of the auxiliary replacement part (4), the drive part (3) is connected to the support part, and the drive part (3) is used to drive the support part to move closer to or away from the auxiliary replacement part (4). The auxiliary replacement part (4) includes a plate (41) that can be inserted between the valve and the sealing ring, and an elastic member that connects the fixing member and the plate (41) at both ends respectively. The plate (41) has a first state bent at an obtuse angle and a second state bent at an acute angle. When the plate (41) changes from the first state to the second state, the plate (41) can remove the sealing ring from the valve. The elastic member is used to drive the plate (41) in the second state to return to the first state. A transmission assembly (5) is provided between the auxiliary replacement part (4) and the support part. When the support part reaches the preset position, the transmission assembly (5) can transmit the driving force of the drive part (3) to the auxiliary replacement part (4) to drive the insert plate (41) to rotate around the sealing ring relative to the valve.

2. The efficient valve sealing ring replacement auxiliary device according to claim 1, characterized in that, The insert (41) includes a first folding plate (411) disposed on the fixing member for support and a second folding plate (412) for disassembly. The second folding plate (412) is hinged to one end of the first folding plate (411). One end of the elastic member is connected to the fixing member, and the other end of the elastic member is connected to the second folding plate (412).

3. The efficient valve sealing ring replacement auxiliary device according to claim 1, characterized in that, The transmission assembly (5) includes a connecting cylinder (51) that is disposed on the support base (2) and extends outward. A gear (52) is disposed on the connecting cylinder (51), and an external gear ring (53) that is rotatably disposed on the fixing member. The connecting cylinder (51) is restricted on the support base (2) by a buffer assembly (6). The gear (52) meshes with the external gear ring (53). The insert plate (41) is disposed on the side of the external gear ring (53) near the valve. The gear (52) is rotatably disposed on the drive part (3).

4. The efficient valve sealing ring replacement auxiliary device according to claim 3, characterized in that, The base plate (1) is provided with a limiting block (12) for restricting the movement of the support base (2). When the support base (2) contacts the limiting block (12), the buffer assembly (6) drives the connecting cylinder (51) to break away from the restriction of the support base (2) and can rotate relative to the support base (2) under the drive of the drive unit (3).

5. The efficient valve sealing ring replacement auxiliary device according to claim 4, characterized in that, The buffer assembly (6) includes a slider (61) slidably disposed in the support base (2) and a limiting rod (62) slidably disposed on the slider (61) at one end. The limiting rod (62) is disposed in the support base (2), and the other end of the limiting rod (62) is inserted into the connecting cylinder (51) connecting the gear (52) in a direction perpendicular to the slider (61). One end of the slider (61) is provided with a first spring (63), and the other end of the slider (61) is provided with a second spring (64). When the support base (2) contacts the limiting block (12), the first spring (63) is compressed, causing the slider (61) to slide toward the support base (2), so that one end of the limiting rod (62) enters the limiting groove (611) on the slider (61), and the other end of the limiting rod (62) disengages from the connecting cylinder (51). The second spring (64) is used for the elastic reset of the slider (61).

6. The efficient valve sealing ring replacement auxiliary device according to claim 4, characterized in that, The fastener includes two support columns (43) disposed on the base plate (1) and located on two opposite sides of the outer gear ring (53). A groove (431) for sliding of the outer gear ring (53) is provided on the opposite side of the support column (43), and a guide portion for guiding the sliding of the outer gear ring (53) is provided in the groove (431).

7. The efficient valve sealing ring replacement auxiliary device according to claim 6, characterized in that, The guide portion includes an arc-shaped guide (44) disposed on the inner wall of the groove (431), and a guide groove (531) is provided on the outer toothed ring (53) corresponding to the arc-shaped guide (44).

8. The efficient valve sealing ring replacement auxiliary device according to claim 3, characterized in that, The drive unit (3) includes a drive motor (31) mounted on the base plate (1) and a drive screw (32) connected to the power output end of the drive motor (31). The drive screw (32) is threadedly connected to the support base (2), the connecting cylinder (51) and the gear (52).

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