A regulating valve maintenance auxiliary device

Abstract

The utility model discloses an adjusting formula's valve maintenance auxiliary device relates to valve maintenance technical field, including lower seat body and upper seat body, the upper side fixedly connected with fixed seat of fixed plate, the upper side fixedly connected with first clamping plate of fixed seat, quick clamping mechanism installs outside fixed seat, the upper side of lower seat body is provided with the slot, the lower side fixedly connected with the plug -in stick of upper seat body, the outside of plug -in stick is provided with the positioning hole, and the connecting groove is provided between two groups of slots of being located the same side, and quick detachable mechanism installs between connecting groove and slot, and the inner side top of upper seat body is installed to translation mechanism. Through above -mentioned mode, through the rotation and twist block drive clamping plate and embrace tightly pipeline, and utilize plug -in stick and press down inclined plane trigger spring buckle to realize seat body second speed locking, can carry out the maintenance to ball valve structure airtight space, and through the rotation and connection block can link and pull the rope and unlock buckle, cooperate pressure spring and realize quick dismounting, in addition can control detection appearance transverse translation and scan valve, and accurate positioning leak point.

Description

Technical Field

[0001] This utility model relates to the field of valve maintenance technology, specifically to a regulating valve maintenance auxiliary device. Background Technology

[0002] In the gas extraction and refining industry, ball valves are critical fluid control components, and their sealing performance directly affects production safety and environmental protection requirements. Regular leak detection of ball valves is of paramount importance in maintenance. Currently, for valve leak repair, especially for in-situ detection of ball valves installed on pipelines, reliable methods and equipment are needed to locate the leak point and assess its extent.

[0003] Currently, there exists a type of auxiliary equipment for valve maintenance that operates by constructing a temporary, enclosed testing space around the valve. For example, one known technical solution employs a split structure, comprising a lower seat and an upper seat that surround the valve. This solution typically uses bolts or clamps to fix the seat to the pipes on both sides of the valve, forming a chamber. During testing, a gas detection instrument is placed within this chamber, and the presence of a leak is determined by detecting changes in the concentration of a specific gas (such as VOCs) within the chamber.

[0004] However, the aforementioned existing technologies have some shortcomings in practical applications. First, using bolts or conventional clamps to fix the seat to the pipeline is cumbersome and time-consuming, especially in space-constrained environments, resulting in low clamping efficiency. Second, the connection and separation between the upper and lower seat usually rely on multiple fasteners, making the disassembly and assembly process inconvenient and affecting maintenance speed. Furthermore, the position of the testing instrument in the chamber is usually fixed, making it difficult to perform flexible scanning testing on different parts of the valve, which may lead to missed leaks or extended positioning time. These factors collectively restrict the overall efficiency of valve maintenance.

[0005] Based on this, the present invention designs an adjustable valve maintenance auxiliary device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an adjustable valve maintenance auxiliary device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An adjustable valve maintenance auxiliary device includes a lower seat and an upper seat, as well as a quick clamping mechanism, a quick disassembly mechanism, and a translation mechanism. Semicircular holes are provided on both sides of the lower and upper seats. A fixing plate is fixedly connected to both sides of the lower seat, and a fixing seat is fixedly connected to the upper side of the fixing plate. A first clamping plate is fixedly connected to the upper side of the fixing seat. The quick clamping mechanism is installed outside the fixing seat. A slot is provided on the upper side of the lower seat, and a rod is fixedly connected to the lower side of the upper seat. Several sets of slots and rods are symmetrically arranged and matched. A positioning hole is provided on the outer side of the rod. A connecting groove is provided between two sets of slots on the same side, and the quick disassembly mechanism is installed between the connecting groove and the slot. A mounting seat is slidably connected to the inner top of the upper seat, and a VOC detector is detachably connected to the inner side of the mounting seat. The translation mechanism is installed on the inner top of the upper seat.

[0009] Furthermore, the two sets of semicircular holes can be spliced ​​together to form a circular channel. Both sides of the lower seat and the upper seat are fixedly connected with sealing gaskets. The sealing gaskets have a semicircular ring structure and are made of elastic material.

[0010] Furthermore, the quick clamping mechanism includes a first clamping block, a second clamping plate, and a screw. The fixed base has a first sliding groove on its outer side. The first clamping block is slidably connected to the inner side of the first sliding groove. The second clamping plate is fixedly connected to the upper side of the first clamping block and slidably connected to the upper surface of the fixed base. The screw is rotatably connected to the inner side of the first sliding groove, and the screw and the first clamping block are connected by a thread.

[0011] Furthermore, both the first clamping plate and the second clamping plate have arc-shaped grooves on their outer surfaces, and the axis of the arc-shaped groove on the outer surface of the first clamping plate coincides with the axis of the semi-circular hole. The end of the screw protrudes from the outside of the fixing seat and is fixedly connected to a screw block.

[0012] Furthermore, the quick assembly / disassembly mechanism includes a wedge block, a connecting plate, a spring, a rotating shaft, and a pull rope. The wedge block is slidably connected to both sides of the connecting groove, and the end of the wedge block abuts against the inner side of the slot. The upper side of the wedge block has an inclined surface, and the wedge block matches the positioning hole. The connecting plate is fixedly connected to the inside of the connecting groove, and the spring is fixedly connected between the connecting plate and the wedge block.

[0013] Furthermore, the rotating shaft is rotatably connected to the inner middle section of the connecting groove, the pull rope is fixedly connected to both sides of the rotating shaft, and the end of the pull rope passes through and slides to the outside of the connecting plate and is fixedly connected to one side of the wedge block. The spring is sleeved on the outside of the pull rope, and the end of the rotating shaft passes through the outside of the lower seat and is fixedly connected to the connecting block.

[0014] Furthermore, a compression spring is fixedly connected to the bottom inner side of the slot, and a pressure plate is fixedly connected to the upper end of the compression spring.

[0015] Furthermore, the translation mechanism includes a second locking block and a lead screw. A second sliding groove is provided on the inner top of the upper body. The lead screw is rotatably connected to the inner side of the second sliding groove. The second locking block is slidably connected to the inner side of the second sliding groove, and the second locking block is fixedly connected to the mounting base. The lead screw and the second locking block are threadedly connected, and the end of the lead screw protrudes from the outside of the upper body and is fixedly connected to a fixing block. A PLC processor is fixedly connected to the outside of the lower body, and the PLC processor is connected to the VOC detector for communication.

[0016] Compared with the prior art, the advantages of this utility model are as follows: 1. This adjustable valve maintenance auxiliary device can drive the clamping plate to quickly and firmly clamp the pipeline with a ring clamp by rotating the screw block, which greatly simplifies the operation steps of fixing the lower seat body and eliminates the tedious process of traditional bolt tightening. The connection between the upper and lower seats is more convenient. It only requires simple alignment and pressing down. During the insertion process, the insert rod automatically triggers the locking of the internal wedge-shaped block and the positioning hole, and the closure is completed instantly. When disassembling, simply rotate the connecting block. The internal linkage mechanism can pull the block to unlock. At the same time, the compression spring automatically lifts the upper seat body slightly to separate it, realizing the second-level disassembly and assembly of the entire auxiliary device. This greatly shortens the maintenance preparation and completion time, and is especially suitable for the needs of rapid on-site operation.

[0017] 2. This adjustable valve maintenance auxiliary device is installed in the enclosed space formed around the valve. Its core detection component is no longer fixed in a single position. By rotating the fixed block, the operator can drive the detector to move smoothly and continuously laterally along the valve axis. This active scanning detection method can systematically cover the valve surface and potential leakage areas such as joints, effectively avoiding missed detections or misjudgments that may be caused by fixed-point detection. The detector's movement trajectory is controllable and intuitive. Combined with the signal processing unit, it can capture and locate the specific location of the leakage source more quickly and accurately, significantly improving the reliability and efficiency of detection.

[0018] 3. This adjustable valve maintenance auxiliary device greatly reduces the physical exertion and operational complexity during maintenance. Clamping, seat closure and unlocking are all completed through simple manual rotation, without the need for additional tools or strong operation. The automatic latching and spring-opening mechanism reduces the steps of manual prying or lifting, lowers the risk of operational errors and the physical requirements of personnel. At the same time, the fast and reliable clamping and closing ensures the airtightness of the inspection space and improves the overall safety of maintenance operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0020] Figure 1 This is a perspective view of an adjustable valve maintenance auxiliary device according to the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 Structural breakdown of an adjustable valve maintenance auxiliary device according to this utility model. Figure 1 ;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0025] Figure 6 This is a partial front sectional view of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view at point D;

[0027] Figure 8 for Figure 6 Enlarged view at point E in the middle;

[0028] Figure 9 Structural breakdown of an adjustable valve maintenance auxiliary device according to this utility model. Figure 2 ;

[0029] Figure 10 for Figure 9 Enlarged view of point F in the middle.

[0030] The labels in the diagram represent:

[0031] 1. Lower seat; 2. Upper seat; 3. Semicircular hole; 4. Sealing gasket; 5. Fixing plate; 6. Fixing base; 7. First clamping plate; 8. First slide groove; 9. First locking block; 10. Second clamping plate; 11. Screw; 12. Tightening block; 13. Slot; 14. Insert rod; 15. Positioning hole; 16. Connecting groove; 17. Wedge block; 18. Connecting plate; 19. Spring; 20. Rotating shaft; 21. Pull rope; 22. Connecting block; 23. Pressure plate; 24. Compression spring; 25. Mounting base; 26. VOC detector; 27. Second slide groove; 28. Second locking block; 29. ​​Lead screw; 30. Fixing block; 31. PLC processor. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-4 A regulating valve maintenance auxiliary device includes a lower seat 1 and an upper seat 2, as well as a quick-clamping mechanism, a quick-disassembly mechanism, and a translation mechanism. The lower seat 1 and upper seat 2 form the main frame of the device, used to surround the valve and create an inspection space. Semicircular holes 3 are provided on both sides of the lower seat 1 and upper seat 2. When closed, the semicircular holes 3 form a complete circular channel to wrap around the pipes on both sides of the valve and ensure a tight seal. Two sets of semicircular holes 3 can be joined to form a circular channel, achieving a tight fit with the outer wall of the pipe. Sealing gaskets 4 are fixedly connected to both sides of the lower seat 1 and upper seat 2. The sealing gaskets 4 have a semicircular annular structure to enhance the sealing effect with the pipe contact surface. The sealing gaskets 4 are made of elastic material to adapt to the installation requirements of pipes of different diameters.

[0034] The lower body 1 is fixedly connected to both sides of the fixed plate 5. The fixed plate 5 is used to support and fix the quick clamping mechanism. The upper side of the fixed plate 5 is fixedly connected to the fixed seat 6. The upper side of the fixed seat 6 is fixedly connected to the first clamping plate 7. The first clamping plate 7 is used as a clamping component on the fixed side and cooperates with the second clamping plate 10. The quick clamping mechanism is installed on the outside of the fixed seat 6 to realize the quick fixing and disassembly of the pipeline.

[0035] The quick-clamping mechanism includes a first clamping block 9, a second clamping plate 10, and a screw 11. A first sliding groove 8 is provided on the outside of the fixed base 6 to provide a sliding track for the first clamping block 9. The first clamping block 9 is slidably connected to the inner side of the first sliding groove 8 and achieves linear motion under the drive of the screw 11. The second clamping plate 10 is fixedly connected to the upper side of the first clamping block 9, serving as a clamping component on the movable side. The second clamping plate 10 is also slidably connected to the upper surface of the fixed base 6 to ensure smooth movement. The screw 11 is rotatably connected to the inner side of the first sliding groove 8, serving as a driving element. The screw 11 and the first clamping block 9 are connected by a thread, realizing the conversion from rotary motion to linear motion.

[0036] Both the first clamping plate 7 and the second clamping plate 10 have arc-shaped grooves on their outer surfaces to form surface contact with the outer wall of the pipe. The axis of the arc-shaped groove on the outer surface of the first clamping plate 7 coincides with the axis of the semi-circular hole 3, ensuring a uniform distribution of clamping force. The end of the screw 11 protrudes from the outside of the fixing seat 6 and is fixedly connected to a screw block 12 for easy manual operation and torque application.

[0037] In this embodiment, when using the adjustable valve maintenance auxiliary device to inspect the ball valve of the gas extraction and refining equipment for leakage, the lower seat 1 is first placed below the valve, so that the semi-circular holes 3 on both sides abut against the outer walls of the pipes on both sides of the ball valve. At this time, the operator turns the screw block 12, which drives the screw 11 to rotate in the first slide groove 8 on the fixed seat 6. Since the screw 11 and the first locking block 9 are threadedly engaged, and the first locking block 9 can only move linearly under the limiting action of the first slide groove 8, the rotation of the screw 11 will drive the first locking block 9 to slide along the slide groove. The second clamping plate 10 fixedly connected to the first locking block 9 moves synchronously and moves closer to the first clamping plate 7 fixed on the fixed plate 5. The arc grooves provided on the outside of the first clamping plate 7 and the second clamping plate 10 have their axes coincide with the axes of the semi-circular holes 3 and work together to achieve a tight annular clamping of the ball valve pipe from both sides, thereby firmly fixing the lower seat 1 to the valve pipe and completing the installation foundation work.

[0038] Example 2: In some embodiments, please refer to the accompanying drawings. Figures 1-8 Based on Embodiment 1, a slot 13 is provided on the upper side of the lower seat 1 as a connection interface for the upper seat 2. A rod 14 is fixedly connected to the lower side of the upper seat 2, used to cooperate with the slot 13 of the lower seat 1 for positioning connection. Several sets of slots 13 and rods 14 are symmetrically arranged and matched to ensure a stable connection. A positioning hole 15 is provided on the outside of the rod 14 for locking with a wedge block 17. A connecting groove 16 is provided between two sets of slots 13 on the same side to accommodate a quick-release mechanism. The quick-release mechanism is installed between the connecting groove 16 and the slot 13, enabling quick connection and separation of the upper and lower seats.

[0039] The quick-release mechanism includes a wedge block 17, a connecting plate 18, a spring 19, a rotating shaft 20, and a pull rope 21. The wedge block 17 is slidably connected to both sides of the connecting groove 16 and is used to engage with the positioning hole 15 for locking. The end of the wedge block 17 abuts against the inner side of the slot 13 to ensure even force distribution. The upper side of the wedge block 17 has a bevel to facilitate the insertion and guidance of the insertion rod 14, and the wedge block 17 matches the positioning hole 15 to ensure reliable locking. The connecting plate 18 is fixedly connected inside the connecting groove 16 as a fixed reference for the mechanism. The spring 19 is fixedly connected between the connecting plate 18 and the wedge block 17, providing the return spring force for the wedge block 17.

[0040] The rotating shaft 20 is rotatably connected to the inner middle section of the connecting groove 16, serving as the winding center of the pull rope 21. The pull rope 21 is fixedly connected to both sides of the rotating shaft 20 to transmit rotational motion. The end of the pull rope 21 passes through and is slidably connected to the outer side of the connecting plate 18 and fixedly connected to one side of the wedge block 17 to achieve force transmission. The spring 19 is sleeved on the outer side of the pull rope 21 to prevent the pull rope 21 from interfering with other components. The end of the rotating shaft 20 passes through the outside of the lower seat 1 and is fixedly connected to the connecting block 22 for easy manual unlocking.

[0041] A compression spring 24 is fixedly connected to the bottom inner side of the slot 13 to provide the ejection force of the upper seat 2. A pressure plate 23 is fixedly connected to the upper end of the compression spring 24 as the force-bearing surface that contacts the insertion rod 14.

[0042] In this embodiment, after the lower seat 1 is securely installed, the upper seat 2 is installed. The operator inserts the symmetrically distributed insertion rods 14 on the lower side of the upper seat 2 into the corresponding slots 13 on the lower seat 1. During the insertion of the insertion rods 14, their ends will contact the upper end of the inclined surface of the wedge block 17. Under the action of the squeezing force, the wedge block 17 overcomes the resistance of the spring 19 and slides and retracts inward away from the insertion rod 14 under the guidance of the connecting groove 16. The spring 19 is compressed. When the insertion rod 14 continues to slide down until the positioning hole 15 on its outer side moves to be flush with the position of the wedge block 17, the wedge block 17 is quickly ejected outward under the action of the restoring force of the spring 19 and accurately snaps into the positioning hole 15, realizing the connection between the upper seat 2 and the lower seat 14. The quick locking of the seat 1, at the same time, the bottom end of the insertion rod 14 presses against the pressure plate 23 at the bottom of the slot 13, compressing the compression spring 24 below it. This process tightly closes the upper and lower seats, creating a relatively closed detection space around the ball valve, which facilitates subsequent leak detection. When disassembling, simply rotate the connecting block 22 at the end of the rotating shaft 20, so that the rotating shaft 20 rotates and winds the pull rope 21 fixed on both sides. The pull rope 21 pulls the wedge block 17 to overcome the elastic force of the spring 19 and disengage from the positioning hole 15. Once the wedge block 17 is unlocked, the compressed compression spring 24 will push the pressure plate 23 to lift the insertion rod 14 upward, thereby automatically lifting the upper seat 2 a short distance, making the two easily separate, realizing the quick disassembly and assembly of the entire seat part.

[0043] Example 3: In some embodiments, please refer to the accompanying drawings. Figure 1 , Figure 9 and Figure 10 Based on Embodiments 1 and 2, a mounting base 25 is slidably connected to the inner top of the upper body 2 for mounting and fixing the testing instrument. A VOC detector 26 is detachably connected to the inner side of the mounting base 25 for easy replacement and maintenance of the testing instrument. A translation mechanism is installed on the inner top of the upper body 2 for adjusting the position of the testing instrument.

[0044] The translation mechanism includes a second locking block 28 and a lead screw 29. A second groove 27 is provided on the top inner side of the upper seat 2, providing a sliding track for the second locking block 28. The lead screw 29 is rotatably connected to the inner side of the second groove 27, serving as a driving element. The second locking block 28 is slidably connected to the inner side of the second groove 27, achieving linear motion. The second locking block 28 is fixedly connected to the mounting base 25, driving the testing instrument to move synchronously. The lead screw 29 and the second locking block 28 are threaded together, enabling the conversion from rotary motion to linear motion. The end of the lead screw 29 protrudes from the outside of the upper seat 2 and is fixedly connected to a fixing block 30 for easy manual adjustment.

[0045] The lower body 1 is externally fixedly connected to a PLC processor 31, which is used to process detection signals. The PLC processor 31 and the VOC detector 26 are connected for communication to realize the real-time transmission and analysis of detection data.

[0046] In this embodiment, after the upper seat 2 and lower seat 1 are installed and securely clamp the pipes on both sides of the ball valve, the VOC detector 26 installed on the top mounting base 25 inside the upper seat 2 can be activated to detect the gas in the enclosed space to determine if there is any oil or gas leakage. To more accurately locate the leak point, the operator can rotate the fixing block 30, causing the lead screw 29 to rotate within the second slide groove 27. Since the lead screw 29 and the second locking block 28 are threadedly engaged, the rotation of the lead screw 29 will drive the second locking block 28 to move laterally parallel to the valve axis along the second slide groove 27. The mounting base 25 is fixedly connected, thus driving the mounting base 25 and the VOC detector 26 on it to move synchronously. By controlling the rotation direction and angle of the fixing block 30, the VOC detector 26 can perform scanning detection along the longitudinal direction of the ball valve. This allows for multi-point monitoring of different positions on the valve without repeated disassembly and reassembly of the equipment. The PLC processor 31 is fixed to the outside of the lower body 1 and communicates with the VOC detector 26, enabling it to receive and process detection data in real time. This active translation detection method significantly improves the detection coverage and the efficiency of locating leak points, greatly accelerating the process of valve maintenance auxiliary work.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A regulating valve maintenance auxiliary device, comprising a lower seat (1) and an upper seat (2), characterized in that: It also includes a quick clamping mechanism, a quick disassembly mechanism, and a translation mechanism. Semicircular holes (3) are provided on both sides of the lower seat (1) and the upper seat (2). Fixing plates (5) are fixedly connected to both sides of the lower seat (1). A fixing seat (6) is fixedly connected to the upper side of the fixing plate (5). A first clamping plate (7) is fixedly connected to the upper side of the fixing seat (6). The quick clamping mechanism is installed outside the fixing seat (6). A slot (13) is provided on the upper side of the lower seat (1). A plug rod (14) is fixedly connected to the lower side of the upper seat (2). The number of slots (13) and plugs (14) is several sets and they are arranged symmetrically and matched. The plugs (14) have positioning holes (15) on the outside. A connecting groove (16) is provided between two sets of slots (13) on the same side. A quick disassembly and assembly mechanism is installed between the connecting groove (16) and the slots (13). The upper body (2) is slidably connected to the inner top of the upper body (2). A VOC detector (26) is detachably connected to the inner side of the mounting base (25). The translation mechanism is installed on the inner top of the upper body (2).

2. The adjustable valve maintenance auxiliary device according to claim 1, characterized in that, The two sets of semicircular holes (3) can be spliced ​​into a circular channel. Both sides of the lower seat (1) and the upper seat (2) are fixedly connected with sealing gaskets (4). The sealing gaskets (4) have a semicircular ring structure and are made of elastic material.

3. The adjustable valve maintenance auxiliary device according to claim 1, characterized in that, The quick clamping mechanism includes a first clamping block (9), a second clamping plate (10), and a screw (11). The fixed base (6) has a first sliding groove (8) on its outside. The first clamping block (9) is slidably connected to the inside of the first sliding groove (8). The second clamping plate (10) is fixedly connected to the upper side of the first clamping block (9) and slidably connected to the upper surface of the fixed base (6). The screw (11) is rotatably connected to the inside of the first sliding groove (8), and the screw (11) and the first clamping block (9) are connected by a thread.

4. The adjustable valve maintenance auxiliary device according to claim 3, characterized in that, Both the first clamping plate (7) and the second clamping plate (10) have arc-shaped grooves on their outer surfaces. The axis of the arc-shaped groove on the outer surface of the first clamping plate (7) coincides with the axis of the semi-circular hole (3). The end of the screw (11) protrudes from the outside of the fixed seat (6) and is fixedly connected to a screw block (12).

5. The adjustable valve maintenance auxiliary device according to claim 1, characterized in that, The quick assembly / disassembly mechanism includes a wedge block (17), a connecting plate (18), a spring (19), a rotating shaft (20), and a pull rope (21). The wedge block (17) is slidably connected to both sides of the connecting groove (16), and the end of the wedge block (17) abuts against the inner side of the slot (13). The upper side of the wedge block (17) is provided with an inclined surface, and the wedge block (17) matches the positioning hole (15). The connecting plate (18) is fixedly connected to the inside of the connecting groove (16), and the spring (19) is fixedly connected between the connecting plate (18) and the wedge block (17).

6. The adjustable valve maintenance auxiliary device according to claim 5, characterized in that, The rotating shaft (20) is rotatably connected to the inner middle section of the connecting groove (16). The pull rope (21) is fixedly connected to both sides of the rotating shaft (20). The end of the pull rope (21) passes through and slides to the outside of the connecting plate (18) and is fixedly connected to one side of the wedge block (17). The spring (19) is sleeved on the outside of the pull rope (21). The end of the rotating shaft (20) passes through the outside of the lower seat (1) and is fixedly connected to the connecting block (22).

7. The adjustable valve maintenance auxiliary device according to claim 1, characterized in that, A compression spring (24) is fixedly connected to the bottom inner side of the slot (13), and a pressure plate (23) is fixedly connected to the upper end of the compression spring (24).

8. The adjustable valve maintenance auxiliary device according to claim 1, characterized in that, The translation mechanism includes a second locking block (28) and a lead screw (29). The upper seat (2) has a second sliding groove (27) on its inner top. The lead screw (29) is rotatably connected to the inner side of the second sliding groove (27). The second locking block (28) is limited and slidably connected to the inner side of the second sliding groove (27). The second locking block (28) is fixedly connected to the mounting base (25). The lead screw (29) is threadedly connected to the second locking block (28). The end of the lead screw (29) protrudes from the outside of the upper seat (2) and is fixedly connected to a fixing block (30). The lower seat (1) is fixedly connected to a PLC processor (31). The PLC processor (31) is connected to a VOC detector (26) via communication.

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