Valve instrument changer

Abstract

The application relates to the field of valves and discloses a valve instrument replacement device which comprises a supporting part, a limiting part, a first adjusting part, a second adjusting part and a battery, the first adjusting part and the second adjusting part are symmetrically and slidably clamped at the top of the supporting part, the limiting part is fixedly installed at the center of the top of the supporting part, and the battery is fixedly clamped at the two ends of the bottom of the supporting part; the inside of the supporting part is provided with a connecting handle, the two ends of the connecting handle are fixedly connected with clamping blocks, and an arc-shaped clamping groove is formed in the end surface of the clamping block; the valve top instrument can be automatically and quickly disassembled, maintained and replaced under a harsh environment through the cooperation of the supporting part, the limiting part, the first adjusting part and the second adjusting part, so that the staff can avoid working for a long time under the harsh environment and harm their own health, and the efficiency of the valve instrument replacement is improved.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a valve instrument replacement device. Background Art

[0002] A valve is a device used to control the flow of fluids (liquids, gases, or steam). It opens, closes, or regulates the flow of fluids in a pipeline to control pressure, temperature, flow rate, and direction. A meter on top of the valve can be used to detect the flow rate through the valve. By reading the scale or numbers on the meter, the flow rate can be determined, allowing for monitoring and adjustment of the fluid process. The meter can also monitor pressure, temperature, and position.

[0003] A valve typically consists of a valve body, bonnet, seat, valve core, and operating mechanism. The valve body is the main body of the valve, housing the valve core and seat. The bonnet connects the valve body to the operating mechanism. The seat is the sealing surface inside the valve body, working with the valve core to provide a seal. The valve core is movable, and its position is controlled to adjust the flow of the fluid. The operating mechanism can be a manually operated handwheel or handle, or an automatically controlled electric motor or pneumatic mechanism.

[0004] Valves come in a wide variety of types, including globe valves, ball valves, butterfly valves, gate valves, and safety valves. Different valves have varying structures and characteristics, suited to different fluid media and operating conditions. Valves are widely used in industrial production, construction, water supply, drainage, HVAC, and other fields to control fluid flow.

[0005] When the instrument on the top of the valve is damaged, the valve instrument needs to be repaired and replaced. During the repair and replacement, the entire valve is generally not removed to replace the instrument, because when the valve is removed, the pipeline needs to stop running, which will increase the repair cost. However, when the instrument is disassembled without removing the valve, the staff needs to manually disassemble, replace and repair the instrument. Since the instrument is usually fastened with screws, the efficiency of the staff's instrument disassembly will be reduced. Especially in some high-temperature environments, chemical production environments, and toxic and harmful gas environments, valve instruments used will cause the staff to be in harsh environments for a long time to disassemble the instrument, which will endanger the health of the staff. Therefore, a valve instrument replacement device is needed to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a valve instrument replacement device to solve the following technical problem: how to automatically and quickly disassemble, repair and replace the instrument on the top of the valve in a harsh environment.

[0007] The purposes of the present application can be achieved by the following technical solutions: a valve instrument replacement device, comprising a supporting part, a limiting part, a first adjusting part, a second adjusting part and a battery, the first adjusting part and the second adjusting part are symmetrically slidingly connected at the top of the supporting part, the limiting part is fixedly installed at the top center of the supporting part, and the battery is fixedly connected at the bottom of the supporting part;

[0008] The inside of the supporting part is provided with a connecting handle, both ends of the connecting handle are fixedly connected with clamping blocks, an arc-shaped clamping groove is formed in one end face of the clamping block, a limiting groove is symmetrically formed in the outer surface of one end of the clamping block, a limiting assembly is rotatably installed in the limiting groove, a T-shaped clamping block is arranged at the bottom of one end of the clamping block, and a limiting column is formed in the top center of the clamping block.

[0009] The clamping block is fixedly connected with a wedge-shaped clamping block at the bottom of one end and in the limiting groove, second driving motors are uniformly fixedly installed in the inside of one end of the clamping block, through holes are symmetrically formed in the inside of the arc-shaped clamping groove, a clamping frame is slidingly connected to the inside of the top end of the clamping block, a second tension spring is fixedly connected to the middle of the clamping frame, extrusion columns are symmetrically fixedly connected to the bottom of one end of the clamping frame, and a threaded rod is rotatably connected to the top of the clamping block and at the side edge of the limiting column.

[0010] First tension springs are sleeved on the outer surfaces of both ends of the threaded rod, a first driving motor is fixedly installed at the top center between the two clamping blocks in the inside of the supporting part, a transmission sprocket is fixedly installed on the outer surface of one end of the first driving motor and the middle of the threaded rod, and a transmission chain is meshingly connected to the outer surface of the transmission sprocket.

[0011] As a preferred scheme of the present application, a transmission shaft is arranged in the inside of the limiting assembly, a clamping plate is fixedly installed on the outer surface of the transmission shaft, plug-in grooves are symmetrically formed in the top of the clamping plate, a wedge-shaped locking block is slidingly connected to the inside of the bottom end of the clamping plate, an extrusion spring is fixedly connected to the top face of the wedge-shaped locking block, and a buffer spring is fixedly connected to the inside of the bottom end of the clamping plate.

[0012] As a preferred scheme of the present application, a limiting sliding frame is arranged in the inside of the limiting part, an extrusion block is slidingly connected in the inside of the limiting sliding frame, a toothed plate is fixedly connected to the bottom end of the extrusion block, a transmission gear is rotatably connected to the bottom face of the limiting sliding frame and at the middle of one end, first air cylinders are fixedly installed on both sides of the middle of the limiting sliding frame, and an arc-shaped supporting plate is fixedly connected to the top end of the first air cylinder.

[0013] As a preferred solution of the present invention: a support block is provided inside the first adjusting part, a second cylinder is fixedly installed at the top center of the support block, the bottom end of the second cylinder is fixedly connected to a connecting frame, the bottom of the connecting frame is fixedly connected to a soft shaft sleeve, and the top end of the soft shaft sleeve is fixedly connected to a metal drill bit.

[0014] As a preferred solution of the present invention: the extrusion column is plugged into the inside of the arc-shaped slot through the through hole, one end of the clamping frame is slidably clamped to the top of the clamping plate through the plug-in slot, and the battery is slidably clamped to the bottom end of the clamping block through a T-shaped clamping block. A threaded hole is provided on the side of the support block, and a socket hole is provided on the bottom outer surface of the support block. The support block is slidably socketed on the outer surface of the limit column through the socket hole at the bottom, and the support block is threadedly connected to the outer surface of one end of the threaded rod through the threaded hole.

[0015] As a preferred solution of the present invention: the bottom end of the wedge-shaped locking block is movably engaged with the wedge-shaped block inside the clamping plate, the limiting assembly is rotatably engaged with one end of the clamping block through the limiting groove, and the top end of the second drive motor is fixedly connected to the bottom end of the soft shaft sleeve.

[0016] As a preferred solution of the present invention: the extrusion block is meshed and connected with the outer surface of the transmission gear through a tooth plate, a groove is opened at one end inside the limiting slide frame, and the first drive motor is meshed and rotatably connected with the transmission gear through a transmission chain at one end.

[0017] As a preferred solution of the present invention: the first drive motor is rotatably engaged with the drive sprocket on the outer surface of the middle part of the threaded rod through a transmission chain at one end, the threads on the outer surfaces of both ends of the threaded rod are symmetrically arranged, and a counterweight block is provided at the bottom end of the clamping plate.

[0018] Beneficial effects of the present invention:

[0019] (1) The present invention provides a support portion inside the support portion, which can support and limit the sliding of the first adjustment portion and the second adjustment portion, and can provide power for the rotation of the metal drill bit. In addition, the limit portion is provided inside the support portion, which can play a stable limit role in the replacement of the instrument and ensure that the bottom end of the instrument is accurately aligned with the top of the valve. At the same time, the first adjustment portion and the second adjustment portion are provided inside the support portion, which can control the rotation of the six fastening screws connecting the valve and the instrument, thereby facilitating the rapid connection between the valve and the instrument.

[0020] (2) The present invention can automatically and quickly disassemble, repair and replace the instrument on the top of the valve in a harsh environment through the coordinated operation between the support part, the limit part, the first adjustment part and the second adjustment part, thereby preventing the workers from working for a long time in a harsh environment and endangering their health, and at the same time improving the efficiency of replacing the valve instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 Assemble the front-end structure diagram of the instrument replacement device;

[0023] Figure 2 Assemble the back-end structure diagram of the instrument replacement device;

[0024] Figure 3 It is a schematic diagram of the cross-section structure of the front edge of the support part;

[0025] Figure 4 Schematic diagram of the rear end structure of the support part;

[0026] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 6 Schematic diagram of the limit component structure;

[0028] Figure 7 Schematic diagram of the limiting part structure;

[0029] Figure 8 Schematic diagram of the structure of the first regulating part;

[0030] Figure 9 Schematic diagram of valve structure;

[0031] Figure 10 Schematic diagram of the replacement device.

[0032] Description of the drawings: 1. Support part; 2. Limiting part; 3. First adjusting part; 4. Second adjusting part; 5. Battery; 11. Limiting assembly; 12. Wedge-shaped block; 13. Connecting block; 14. Arc-shaped slot; 15. Limiting column; 16. Threaded rod; 17. First tensioning spring; 18. First driving motor; 19. Transmission chain; 110. Transmission sprocket; 111. Connecting handle; 112. T-shaped block; 113. Limiting slot; 114. Second driving motor; 115. Extrusion Column; 116, through hole; 117, clamping frame; 118, second tensioning spring; 119, clamping plate; 120, plug-in slot; 121, transmission shaft; 122, extrusion spring; 123, wedge-shaped locking block; 124, buffer spring; 21, transmission gear; 22, tooth plate; 23, extrusion block; 24, limiting sliding frame; 25, arc-shaped support plate; 26, first cylinder; 31, support block; 32, flexible shaft sleeve; 33, connecting frame; 34, metal drill bit; 35, second cylinder. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] See also Figures 1-8 As shown, the present invention is a valve instrument replacement device, comprising: a support portion 1, a limit portion 2, a first adjustment portion 3, a second adjustment portion 4 and a battery 5. The first adjustment portion 3 and the second adjustment portion 4 are symmetrically slidably clamped on the top of the support portion 1, the limit portion 2 is fixedly installed at the top center of the support portion 1, and the battery 5 is fixedly clamped at both ends of the bottom of the support portion 1;

[0035] A connecting handle 111 is provided inside the support portion 1. Both ends of the connecting handle 111 are fixedly connected to a clamping block 13. An arc-shaped clamping groove 14 is provided on one end surface of the clamping block 13. A limiting groove 113 is symmetrically provided on the outer surface of one end of the clamping block 13. The limiting assembly 11 is rotatably mounted inside the limiting groove 113. A T-shaped clamping block 112 is provided at the center of one end of the bottom of the clamping block 13. A limiting column 15 is provided at the center of the top of the clamping block 13.

[0036] A wedge-shaped clamping block 12 is fixedly connected to the bottom of one end of the clamping block 13 and located inside the limiting groove 113. A second drive motor 114 is evenly fixedly installed inside one end of the clamping block 13. Through holes 116 are symmetrically opened inside the arc-shaped clamping groove 14. A clamping frame 117 is slidably clamped to the top of the inner top of the clamping block 13. A second tensioning spring 118 is fixedly connected to the middle of the clamping frame 117. An extrusion column 115 is symmetrically fixedly connected to the bottom of one end of the clamping frame 117. A threaded rod 16 is rotatably clamped to the top edge of the clamping block 13 and located on one side of the limiting column 15.

[0037] The outer surfaces of both ends of the threaded rod 16 are sleeved with a first tensioning spring 17, and a first drive motor 18 is fixedly installed inside the support part 1 and at the top center between the two sets of clamping blocks 13. A transmission sprocket 110 is fixedly installed on one end of the first drive motor 18 and the middle outer surface of the threaded rod 16, and the outer surface of the transmission sprocket 110 is meshed with a transmission chain 19.

[0038] A transmission shaft 121 is provided inside the limiting component 11, and a clamping plate 119 is fixedly installed on the outer surface of the transmission shaft 121. A plug-in slot 120 is symmetrically provided on the top of the clamping plate 119. A wedge-shaped locking block 123 is slidably clamped inside the bottom end of the clamping plate 119. An extrusion spring 122 is fixedly connected to the top surface of the wedge-shaped locking block 123, and a buffer spring 124 is fixedly connected to the bottom end of the clamping plate 119.

[0039] A limiting slide frame 24 is provided inside the limiting part 2, and the internal sliding clamp of the limiting slide frame 24 is connected with an extrusion block 23, and the bottom end of the extrusion block 23 is fixedly connected with a tooth plate 22. The middle part of one end of the bottom surface of the limiting slide frame 24 is rotatably connected with a transmission gear 21, and the first cylinder 26 is fixedly installed on both sides of the middle part of the limiting slide frame 24, and the top end of the first cylinder 26 is fixedly connected with an arc-shaped support plate 25.

[0040] A support block 31 is provided inside the first adjusting part 3, and a second cylinder 35 is fixedly installed at the top center of the support block 31. The bottom end of the second cylinder 35 is fixedly connected to a connecting frame 33, and the bottom of the connecting frame 33 is fixedly connected to a soft shaft sleeve 32, and the top end of the soft shaft sleeve 32 is fixedly connected to a metal drill bit 34.

[0041] The extrusion column 115 is inserted into the inside of the arc-shaped slot 14 through the through hole 116, and one end of the clamping frame 117 is slidably clamped with the top of the clamping plate 119 through the insertion slot 120. The battery 5 is slidably clamped to the bottom end of the clamping block 13 through the T-shaped clamping block 112. A threaded hole is provided on the side of the support block 31, and a socket hole is provided on the bottom outer surface of the support block 31. The support block 31 is slidably sleeved on the outer surface of the limiting column 15 through the socket hole at the bottom, and the support block 31 is threadedly connected to the outer surface of one end of the threaded rod 16 through the threaded hole.

[0042] Through the above technical solution, the extrusion column 115 can be inserted into the inside of the arc-shaped slot 14 through the through hole 116, so when the clamping block 13 contacts the outer surface of the valve through the arc-shaped slot 14, the extrusion column 115 will be squeezed to slide synchronously, thereby releasing the lock on one end of the clamping plate 119 through the clamping frame 117, and the battery 5 is slidably clamped to the bottom end of the clamping block 13 through the T-shaped clamping block 112, so that the battery 5 can supply power for the second drive motor 114, the first cylinder 26 and the second cylinder 35. A threaded hole is provided on the side of the support block 31, and a socket hole is provided on the bottom outer surface of the support block 31, which can facilitate the threaded connection between the support block 31 and the threaded rod 16, and facilitate the sliding of the support block 31.

[0043] The bottom end of the wedge-shaped locking block 123 is movably engaged with the wedge-shaped block 12 inside the clamping plate 119 , and the limiting assembly 11 is rotatably engaged with one end of the clamping block 13 through the limiting groove 113 , and the top end of the second driving motor 114 is fixedly connected to the bottom end of the flexible shaft sleeve 32 .

[0044] Through the above technical solution, the bottom end of the wedge-shaped locking block 123 can be movably engaged with the wedge-shaped clamping block 12 inside the clamping plate 119, so that the downwardly deflected clamping plate 119 can be locked. When the support part 1 is disassembled, the top of the wedge-shaped locking block 123 is pulled up until the bottom end of the wedge-shaped locking block 123 is separated from the wedge-shaped clamping block 12, and then the support part 1 is pulled to separate from the valve. The limit assembly 11 is rotated and engaged with one end of the clamping block 13 through the limit groove 113, so that the clamping plate 119 is deflected downward. The top end of the second drive motor 114 is fixedly connected to the bottom end of the soft shaft sleeve 32, so that the second drive motor 114 can control the forward and reverse rotation of the metal drill bit 34 through the soft shaft sleeve 32.

[0045] The extrusion block 23 is meshed with the outer surface of the transmission gear 21 through the tooth plate 22. A groove is provided at one end of the inner portion of the limiting slide frame 24. The first drive motor 18 is meshed and rotatably connected with the transmission gear 21 through a transmission chain 19 at one end.

[0046] Through the above technical solution, the extrusion block 23 can be meshed and connected with the outer surface of the transmission gear 21 through the tooth plate 22, so that when the transmission gear 21 rotates, the instrument can be squeezed and replaced through the tooth plate 22 and the extrusion block 23. A groove is provided at one end of the interior of the limiting slide frame 24, which can facilitate the lifting and lowering of the instrument inside one end of the limiting slide frame 24. The first drive motor 18 is meshed and rotatably connected with the transmission gear 21 through the transmission chain 19 at one end, and can control the forward and reverse rotation of the transmission gear 21, thereby facilitating the adjustment of the position of the extrusion block 23 inside the limiting slide frame 24.

[0047] By arranging the support part 1 inside the support part 1, it can play a supporting and limiting role for the sliding of the first adjustment part 3 and the second adjustment part 4, and at the same time can provide power for the rotation of the metal drill bit 34. In addition, the limiting part 2 is arranged inside the support part 1, which can play a stable limiting role for the replacement of the instrument and ensure that the bottom end of the instrument is accurately aligned with the top of the valve. At the same time, the first adjustment part 3 and the second adjustment part 4 are arranged inside the support part 1, which can control the rotation of the six fastening screws connecting the valve and the instrument, thereby facilitating quick connection between the valve and the instrument.

[0048] The first drive motor 18 is rotatably engaged with the drive sprocket 110 on the outer surface of the middle part of the threaded rod 16 through a transmission chain 19 at one end. The threads on the outer surfaces of both ends of the threaded rod 16 are symmetrically arranged, and a counterweight block is provided at the bottom end of the clamping plate 119.

[0049] Through the above technical solution, the first drive motor 18 can be rotatably engaged with the drive sprocket 110 on the outer surface of the middle part of the threaded rod 16 through the transmission chain 19 at one end, so that the threaded rod 16 can be controlled to rotate forward and reverse. Moreover, the threads on the outer surfaces at both ends of the threaded rod 16 are symmetrically arranged, which can drive the two groups of support blocks 31 to slide synchronously in opposite directions when the threaded rod 16 rotates. A counterweight block is provided at the bottom end of the clamping plate 119, so that when one end of the clamping frame 117 is separated from the plug-in slot 120, the clamping plate 119 will deflect downward and clamp with the wedge-shaped clamping block 12, so that the support part 1 can be automatically locked to the outer surface of the valve.

[0050] The working principle of the present invention is: when replacing the instrument on the top of the valve, the replacement device is first installed on the outer surface of the valve. When installing the replacement device, one end of the two sets of clamping blocks 13 are respectively adapted and plugged into the outer surfaces of both ends of the valve, and the arc-shaped clamping groove 14 at one end of the clamping block 13 is tightly clamped on the outer surface of the valve. At the same time, the extrusion column 115 inside the arc-shaped clamping groove 14 will be squeezed, driving the clamping frame 117 to slide horizontally. At the same time, the clamping frame 117 will squeeze the second tensioning spring 118 to contract, and one end of the clamping frame 117 will be separated from the plug-in groove 120. At the same time, the clamping plate 119 will deflect downward under the action of the counterweight block at one end. The impact force generated by the deflection of the clamping plate 119 will cause one side of the wedge-shaped clamping block 12 to The end squeezes the inclined surface of the bottom of the wedge-shaped locking block 123, thereby causing the wedge-shaped locking block 123 to rise and squeeze the squeezing spring 122 to contract until the bottom end of the wedge-shaped locking block 123 moves to the top of the wedge-shaped clamping block 12. At the same time, the wedge-shaped locking block 123 will be squeezed by the squeezing spring 122, causing the wedge-shaped locking block 123 to fall and reset and engage with the top of the wedge-shaped clamping block 12, thereby locking the support part 1 to the outer surface of the valve. Therefore, when the staff plugs the support part 1 into the outer surface of the valve, the installation of the replacement device can be completed quickly. Then, the controller is used to start the first drive motor 18 to drive the threaded rod 16 to rotate synchronously through the transmission chain 19. The rotation of the threaded rod 16 will drive the support blocks 31 at both ends to slide synchronously close to each other until one end of the two groups of support blocks 31 contacts each other. When the screw thread 16 is tightened, the screw thread 31 on the side of the support block 31 is tightened, and the screw thread 31 on the outer surface of the threaded rod 16 is tightened. When the threaded rod 16 continues to rotate, it will not continue to drive the support block 31 to slide. At the same time, the three groups of metal drill bits 34 at one end of the support block 31 will move to the bottom of the instrument bottom fastening screw, and then start the two groups of second cylinders 35 to drive the three groups of metal drill bits 34 to rise and engage with the bottom end of the fastening screw through the connecting frame 33. At the same time, start the second drive motor 114 to drive the top fastening screw to rotate through the soft shaft sleeve 32 and the metal drill bit 34, and then start the second cylinder 35 to drive the metal drill bit 34 to follow the fastening screw to descend until the fastening bolt is separated from the bottom end of the instrument. At the same time, start the first cylinder 26 to drive the arc support plate 25 to rise, thereby removing the old instrument. The meter is lifted so that the electrical connection plug at the bottom of the meter is separated from the sensor inside the valve. When the first drive motor 18 rotates, the transmission chain 19 drives the transmission gear 21 to rotate synchronously. When the transmission gear 21 rotates, it drives the toothed plate 22 on the outer surface to slide horizontally, and the toothed plate 22 drives the extrusion block 23 to slide inside the limit slide frame 24, thereby squeezing the bottom end of the new meter to slide synchronously inside the limit slide frame 24 until the new meter squeezes the old meter out of the limit slide frame 24. At the same time, the outer surface of the bottom of the new meter will be on the upper surface of the arc support plate 25. Then start the first cylinder 26 to drive the new meter down through the arc support plate 25. Since the meter itself has a certain mass, when the new meter descends and contacts the top of the valve,The plug-in electrical connection plug is then connected to the sensor inside the valve. The second cylinder 35 is then activated to drive the metal drill bit 34 upwards through the connecting frame 33. Simultaneously, the second drive motor 114 drives the fastening screw to rotate synchronously through the flexible shaft sleeve 32 and the metal drill bit 34 until the fastening screw is securely connected to the bottom of the new instrument. This completes the automatic disassembly and replacement of the instrument. Through the coordinated operation of the support portion 1, the limit portion 2, the first adjustment portion 3, and the second adjustment portion 4, the instrument on the top of the valve can be automatically and quickly disassembled, repaired, and replaced in harsh environments, thereby preventing the harsh environment from endangering the health of workers and improving the efficiency of valve instrument replacement.

[0051] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A valve instrument replacement device, comprising: A support portion (1), a limiting portion (2), a first adjusting portion (3), a second adjusting portion (4) and a battery (5), wherein the first adjusting portion (3) and the second adjusting portion (4) are symmetrically slidably engaged with the top of the support portion (1), the limiting portion (2) is fixedly mounted at the top center of the support portion (1), and the battery (5) is fixedly engaged with both ends of the bottom of the support portion (1); The invention is characterized in that a connecting handle (111) is provided inside the support portion (1), both ends of the connecting handle (111) are fixedly connected to a clamping block (13), an arc-shaped clamping groove (14) is provided on one end surface of the clamping block (13), a limiting groove (113) is symmetrically provided on the outer surface of one end of the clamping block (13), a limiting component (11) is rotatably installed inside the limiting groove (113), a T-shaped clamping block (112) is provided at the center of one end of the bottom of the clamping block (13), and a limiting column (15) is provided at the center of the top of the clamping block (13); A wedge-shaped clamping block (12) is fixedly connected to the bottom of one end of the clamping block (13) and located inside the limiting groove (113); a second drive motor (114) is evenly fixedly installed inside one end of the clamping block (13); a through hole (116) is symmetrically opened inside the arc-shaped clamping groove (14); a clamping frame (117) is slidably clamped to the top of the inner top of the clamping block (13); a second tensioning spring (118) is fixedly connected to the middle of the clamping frame (117); an extrusion column (115) is symmetrically fixedly connected to the bottom of one end of the clamping frame (117); a threaded rod (16) is rotatably clamped to the top of the clamping block (13) and located on one side edge of the limiting column (15); The outer surfaces of both ends of the threaded rod (16) are sleeved with a first tensioning spring (17); a first driving motor (18) is fixedly installed in the center of the top of the support portion (1) and between the two sets of clamping blocks (13); a transmission sprocket (110) is fixedly installed at one end of the first driving motor (18) and the outer surface of the middle portion of the threaded rod (16); and a transmission chain (19) is meshedly connected to the outer surface of the transmission sprocket (110).

2. A valve instrument replacement device according to claim 1, characterized in that: A transmission shaft (121) is provided inside the limiting assembly (11), a clamping plate (119) is fixedly mounted on the outer surface of the transmission shaft (121), a plug-in slot (120) is symmetrically provided on the top of the clamping plate (119), a wedge-shaped locking block (123) is slidably clamped inside the bottom end of the clamping plate (119), an extrusion spring (122) is fixedly connected to the top surface of the wedge-shaped locking block (123), and a buffer spring (124) is fixedly connected to the bottom end of the clamping plate (119).

3. A valve instrument replacement device according to claim 2, characterized in that: A limiting sliding frame (24) is provided inside the limiting portion (2), and an extrusion block (23) is slidably engaged inside the limiting sliding frame (24), and a tooth plate (22) is fixedly connected to the bottom end of the extrusion block (23). A transmission gear (21) is rotatably engaged in the middle of one end of the bottom surface of the limiting sliding frame (24), and first cylinders (26) are fixedly installed on both sides of the middle of the limiting sliding frame (24), and an arc-shaped supporting plate (25) is fixedly connected to the top end of the first cylinder (26).

4. A valve instrument replacement device according to claim 3, characterized in that: A support block (31) is provided inside the first adjusting portion (3), a second cylinder (35) is fixedly mounted at the top center of the support block (31), a connecting frame (33) is fixedly connected to the bottom end of the second cylinder (35), a flexible shaft sleeve (32) is fixedly connected to the bottom end of the connecting frame (33), and a metal drill bit (34) is fixedly connected to the top end of the flexible shaft sleeve (32).

5. A valve instrument replacement device according to claim 4, characterized in that: The extrusion column (115) is inserted into the interior of the arc-shaped card slot (14) through the through hole (116), one end of the card frame (117) is slidably engaged with the top of the card plate (119) through the insertion slot (120), and the battery (5) is slidably engaged with the bottom end of the card block (13) through the T-shaped card block (112). A threaded hole is provided on the side of the support block (31), and a socket hole is provided on the bottom outer surface of the support block (31). The support block (31) is slidably engaged with the outer surface of the limit column (15) through the socket hole at the bottom, and the support block (31) is threadedly connected to the outer surface of one end of the threaded rod (16) through the threaded hole.

6. A valve instrument replacement device according to claim 5, characterized in that: The bottom end of the wedge-shaped locking block (123) is movably engaged with the wedge-shaped clamping block (12) inside the clamping plate (119), the limiting assembly (11) is rotatably engaged with one end of the clamping block (13) through the limiting groove (113), and the top end of the second driving motor (114) is fixedly connected to the bottom end of the flexible shaft sleeve (32).

7. A valve instrument replacement device according to claim 6, characterized in that: The extrusion block (23) is meshed and connected with the outer surface of the transmission gear (21) through the tooth plate (22); a groove is provided at one end of the interior of the limit slide frame (24); and the first drive motor (18) is meshed and rotatably connected with the transmission gear (21) through a transmission chain (19) at one end.

8. The valve instrument replacement device according to claim 7, characterized in that: The first drive motor (18) is rotatably engaged with a drive sprocket (110) on the outer surface of the middle portion of the threaded rod (16) via a transmission chain (19) at one end. The threads on the outer surfaces of both ends of the threaded rod (16) are symmetrically arranged. A counterweight is provided at the bottom end of the clamping plate (119).

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