Multifunctional visual valve opener for downhole closed space

Abstract

The utility model relates to a downhole closed space multifunctional visual valve opener, including the handle, screw sleeve and valve wrench that are connected in proper order from top to bottom, the middle axle of screw sleeve is equipped with the internal thread hole and has the driving screw rod of screw connection, the bottom surface of valve wrench is seted up to have the movable cavity, is equipped with the clamping block that can open and close in movable cavity, the driving screw rod stretches into movable and drives the clamping block linkage to open and close, the top of driving screw rod is connected with handle, the left and right sides of clamping block are equipped with guide block, and the guide plate is inclined and sets up and the bottom end is inclined to the opposite side of clamping block, and the left and right inner walls of movable cavity are equipped with the guide groove that is inserted for guide block, realized by the handle of the valve opener of the personnel well operation, the clamping block stretches out downward and closes mutually, and the valve plate is pinched and rotates to adapt to the size of different specifications valve stem, can reach the effect of accurate operation without replacing the valve opener, avoid the interference of downhole environment, the operation step is more simple, improves the overall efficiency and reliability of pipe network maintenance.

Description

Technical Field

[0001] This utility model relates to the field of valve opener technology, and in particular to a multifunctional visual valve opener for underground confined spaces. Background Technology

[0002] During pipeline inspections and emergency repairs of gas pipelines, technicians need to open the valve wells of the gas pipelines and open and close the valves located in the wells. Usually, technicians first use tools such as picks and crowbars to open the valve well covers. Due to the serious water seepage and overflowing sewage in some valve wells, it is also necessary to use a drainage machine to pump out the water in the wells. Finally, technicians enter the valve wells and use a valve opener to clamp the valve stem and open the valve.

[0003] However, during emergency repairs, the need for pumping water before entering the well due to water accumulation issues prolongs the operation time. Opening the well cover, pumping out the water, and opening and closing valves require technicians to carry a large amount of equipment. The different valve specifications also require carrying multiple valve openers, further increasing the burden on technicians. In addition, the working conditions in the valve well are complex and varied, limiting the operating space for technicians and making it difficult to find suitable points of force to open and close the valves, which greatly reduces work efficiency and delays valuable time for emergency repairs.

[0004] Therefore, designing a multi-functional visual valve opener for confined underground spaces that can improve valve opening efficiency and is easy to carry has become an urgent technical problem to be solved. Summary of the Invention

[0005] To solve the above problems, this utility model provides a multifunctional visual valve opener for underground sealed spaces.

[0006] The technical solution of this utility model is a multi-functional visual valve opener for underground confined spaces, including a handle, a lead screw sleeve, and a valve wrench. The lead screw sleeve has an internal threaded hole at its central axis and is threadedly connected to a drive lead screw. The handle is a crossbar connected to the top of the lead screw sleeve. The valve wrench is connected to the bottom of the lead screw sleeve. The bottom surface of the valve wrench has a movable cavity, which contains a slide rail extending forward and backward and a pair of clamping blocks. The top of the movable cavity has a through hole communicating with the internal threaded hole. The bottom end of the drive lead screw passes through the through hole and is axially connected to the top surface of the slide rail. The top end extends out of the lead screw sleeve and is connected to a handle. There is a movable gap between the handle and the lead screw sleeve. The top of the clamping blocks has a slot for engaging and sliding on the slide rail. There are guide blocks on the left and right sides of the clamping blocks. The guide plates are inclined and their bottom ends are biased towards the opposite side of the clamping blocks. The left and right inner walls of the movable cavity have guide grooves for the guide blocks to be inserted. The length direction of the guide grooves corresponds to the inclination direction of the guide blocks.

[0007] With the above structure, the handle is connected to the top of the screw sleeve, and the valve wrench is connected to the bottom of the screw sleeve. After opening the manhole cover, technicians can directly insert the valve wrench into the valve well without pumping out the water, clamping the valve stem. Standing above the well, the technician grasps the handle and rotates it to rotate the screw sleeve and valve wrench, thus turning the valve stem. During valve opening, the technician is not affected by the slippery environment or confined space below, making it easier to find a suitable point of force. After the valve wrench is inserted into the well, it is placed on the valve stem, allowing the valve stem to extend into the movable cavity. Clamping blocks are located on the front and rear sides of the valve stem. By rotating the handle, the handle drives the drive screw to rotate within the internal threaded hole. The drive screw engages with the internal threaded hole, causing the drive screw to move up and down along the internal threaded hole. When clamping the valve stem is needed... The drive screw descends along the internal threaded hole, passes through the through hole and moves into the movable cavity, pushing the slide rail down. The drive screw is axially connected to the top surface of the slide rail, and the slot on the top of the clamping block engages with the slide rail, sliding along it. The guide block on the side of the clamping block inserts into the guide groove. As the slide rail descends, it pushes the clamping block, causing the guide block on the side to move diagonally downwards along the guide groove, causing the clamping blocks to move along the slide rail and come together, clamping the valve stem from both sides. Simultaneously, the orientation of the slide rail does not rotate with the drive screw. This allows technicians to operate the valve opener handle from the wellhead. The clamping blocks extend downwards and simultaneously close together, clamping the valve plate for rotation, adapting to different valve stem sizes. Precise operation can be achieved without changing the valve opener, avoiding interference from the downhole environment, simplifying the operation steps, and improving the overall efficiency and reliability of pipeline maintenance.

[0008] As a further improvement of this utility model, a pickaxe is provided at one end of the handle.

[0009] With the above structure, a pick is provided at one end of the handle, and the screw sleeve is used as the pick rod to pry up the manhole cover, eliminating the need to carry an additional iron pick to open the manhole cover.

[0010] As a further improvement of this utility model, the handle includes a hand crank threadedly connected to the top of the drive screw and a pair of locking nuts, which are respectively locked on the upper and lower sides of the hand crank.

[0011] With the above structure, the hand crank is threadedly connected to the top of the drive screw via a locking nut. The locking nuts are locked on the upper and lower sides of the hand crank, so that when the technician rotates the hand crank, it can drive the drive screw to rotate. The hand crank can be loosened by rotating the locking nut in the opposite direction, and then the hand crank and locking nut can be removed from the drive screw in sequence. Other types of drive components such as straight handles and handwheels can be replaced and threaded onto the drive screw for installation.

[0012] As a further improvement of this utility model, the lead screw sleeve includes an upper sleeve, a lower sleeve, and an extension sleeve that can be connected between the upper sleeve and the lower sleeve. The upper sleeve, the lower sleeve, and the extension sleeve are provided with connecting plates on the outer sides of their respective connecting ends, and connecting bolts that pass through the connecting plates for fixing. The connecting plates are provided with corresponding connection marks. The drive lead screw also includes an extension lead screw. The top ends of both the drive lead screw and the extension lead screw are provided with square connecting grooves. The bottom end of the extension lead screw is provided with a connecting block corresponding to the shape of the connecting groove. One side of the inner wall of the connecting groove is provided with a contraction groove. A connecting steel ball and a support spring are provided in the contraction groove. One side of the connecting steel ball extends out of the contraction groove. The support spring is connected between the bottom of the contraction groove and the connecting steel ball. The side of the connecting block is provided with a steel ball groove corresponding to the position of the connecting steel ball.

[0013] With the above structure, the length of this valve opener can be flexibly adjusted through the cooperation of the upper sleeve, lower sleeve, extension sleeve, and drive screw and extension screw to adapt to valve wells of different depths. The adjustment steps are as follows: 1) Rotate the handle off the drive screw; 2) Loosen the connecting bolt, rotate the upper sleeve and extension sleeve to the top of the drive screw, and then remove them; 3) Increase or decrease the number of extension sleeves and arrange them between the upper sleeve and lower sleeve; 4) Use the connecting block to insert and remove in the connecting groove to increase / decrease the number of extension screws, realizing the splicing / removal of the extension screws on the drive screw, ensuring that the total length of the screw matches the screw sleeve; 5) Rotate the extension sleeve and upper sleeve onto the spliced / removed screw in sequence to complete the docking with the lower sleeve; 6) Reinstall the handle at the top of the screw and remove. The corresponding number of connecting bolts are installed on the connecting plates to complete the length adjustment of the valve opener. When the connecting block is inserted into the connecting groove, the side wall of the connecting block squeezes the connecting steel ball into the shrinkage groove, and the support spring contracts to accumulate elastic force. After the connecting block is fully inserted, the steel ball groove on the side of the connecting block aligns with the shrinkage groove. The support spring exerts force to push one side of the connecting steel ball out and into the steel ball groove, so that the extension screw is not easy to fall off the drive screw or other extension screws without being manually inserted or removed. In this connection case, the drive screw and the extension screw are connected to form a continuous external thread. The connecting plate has corresponding connection marks to avoid the extension sleeve being installed backwards and causing thread misalignment. When the connection marks are aligned, the upper sleeve, lower sleeve and extension sleeve are connected to form a continuous internal thread.

[0014] As a further improvement of this utility model, the lower sleeve is provided with a limiting plate and a well cover hook. The limiting plate is connected to the outer side of the lower sleeve. The well cover hook includes a connecting chain and a pair of connecting hooks. The connecting hook includes a horizontal rod and a vertical rod. One end of the vertical rod is connected to the chain, and the other end is connected to the horizontal rod to form a T-shaped structure.

[0015] With the above structure, when it is necessary to open the concealed manhole cover, the valve wrench is placed on the ground as a fulcrum, the limiting plate on the outer side of the lower sleeve faces upward, the connecting chain is hung on the outside of the lower sleeve and pressed against the limiting plate to prevent the connecting chain from slipping towards the valve wrench, the horizontal rod of the connecting hook is then inserted into the hole of the manhole cover, the vertical rod is rotated so that the horizontal rod is perpendicular to the manhole cover, and the horizontal rod can abut against the bottom surface of the manhole cover. Finally, the screw sleeve is lifted with the valve wrench as a fulcrum, and the manhole cover hook hanging on the lower sleeve pulls the concealed manhole cover up and opens it, so that this valve opener can open more types of manhole covers.

[0016] As a further improvement of this utility model, the handle is connected with a reinforcing rib, and the two ends of the reinforcing rib are respectively connected to the bottom of the handle and the outer side of the upper sleeve to form a triangular structure.

[0017] With the above structure, a triangular structure is formed between the handle and the upper sleeve by the reinforcing ribs for support, which improves the structural strength of the handle and the upper sleeve, avoids deformation and damage of the handle due to the reaction force when the valve stem is rotated, and extends the service life.

[0018] As a further improvement of this utility model, the valve wrench is connected to an underwater camera facing downwards. The underwater camera is equipped with a light and connected to a waterproof data cable. The waterproof data cable is connected to a controller, and a display screen is installed on the controller. The underwater camera and the controller are also equipped with a Bluetooth communication module for signal connection.

[0019] With the above structure, a waterproof data cable connects the underwater camera and the controller to transmit signals. After the valve wrench is lowered into the well, the controller is operated to activate the underwater camera and turn on its lights to ensure sufficient light in the dark, water-filled valve well, allowing the camera to capture clear images. The images captured by the underwater camera are transmitted to the controller and displayed on its screen, allowing technicians to better understand the situation down below and easily move the lead screw socket above ground to align the valve wrench with the valve stem. By installing a Bluetooth communication module on the underwater camera and the controller, wireless image data is transmitted as an alternative to the waterproof data cable, allowing technicians to move the controller more flexibly.

[0020] As a further improvement of this utility model, the valve wrench is connected to a gas detection sensor, the gas detection sensor is electrically connected to the controller, and the controller is equipped with a voice alarm.

[0021] With the above structure, before inserting the valve wrench into the valve well, the valve wrench is placed at the wellhead. The controller sends an electrical signal to activate the gas detection sensor to detect the gas concentration in the well. The detected data is fed back to the controller, and the voice alarm issues a corresponding intelligent prompt voice. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of this utility model.

[0023] Figure 2 The diagram shown is a structural schematic of this utility model after the extension screw and extension sleeve are installed.

[0024] Figure 3 The diagram shown is a schematic of a valve wrench.

[0025] Figure 4 The diagram shows a cross-sectional view of the clamping plate in an unclamped state.

[0026] Figure 5 The diagram shown is a cross-sectional view of the clamping plate in the clamped state.

[0027] Figure 6 The diagram shown is a structural schematic of the manhole cover hook in use.

[0028] Figure 7 The diagram shown is a cross-sectional view of the extension screw.

[0029] 1-Handle, 2-Screw sleeve, 3-Valve wrench, 4-Internal threaded hole, 5-Drive screw, 6-Moving cavity, 7-Slide rail, 8-Clamping block, 9-Moving interval, 10-Slot, 11-Guide block, 12-Guide groove, 13-Hand crank, 14-Locking nut, 15-Upper sleeve, 16-Lower sleeve, 17-Extension sleeve, 18-Connecting plate, 19-Connecting bolt, 20-Connecting mark, 21-Extension screw, 22-Connecting groove, 23-Connecting block, 24-Contraction groove, 25-Connecting steel ball, 26-Support spring, 27-Steel ball groove, 28-Limiting plate, 29-Connecting chain, 30-Connecting hook, 31-Horizontal bar, 32-Vertical bar, 33-Reinforcing rib, 34-Underwater camera, 35-Waterproof data cable, 36-Controller, 37-Display screen, 38-Gas detection sensor, 39-Hand pick. Detailed Implementation

[0030] like Figures 1-7The shown multi-functional visual valve opener for a confined space in a well includes a handle 1, a lead screw sleeve 2, and a valve wrench 3. The lead screw sleeve 2 has an internally threaded hole 4 at its central axis, and a drive lead screw 5 is threadedly connected to it. The handle 1 is a crossbar connected to the top of the lead screw sleeve 2. The valve wrench 3 is connected to the bottom of the lead screw sleeve 2. A movable cavity 6 is formed on the bottom surface of the valve wrench 3. The movable cavity 6 contains a sliding rail 7 extending forward and backward and a pair of clamping blocks 8. The top of the movable cavity 6 has a through hole communicating with the internally threaded hole 4. The bottom of the drive lead screw 5... The end passes through the through hole and is axially connected to the top surface of the slide rail 7. The top end extends out of the lead screw sleeve 2 and is connected to a handle. There is an movable gap 9 between the handle and the lead screw sleeve 2. The top of the clamping block 8 is provided with a slot 10 for locking onto the slide rail 7 and sliding. There are guide blocks 11 on the left and right sides of the clamping block 8. The guide plate is inclined and the bottom end is biased towards the opposite side of the clamping block 8. The left and right inner walls of the movable cavity 6 are provided with guide grooves 12 for the guide blocks 11 to be inserted. The length direction of the guide groove 12 corresponds to the inclination direction of the guide block 11.

[0031] The handle 1 is a crossbar connected to the top of the screw sleeve 2, and the valve wrench 3 is connected to the bottom of the screw sleeve 2. After opening the well cover, technicians can directly insert the valve wrench 3 into the valve well without pumping out the water, clamping the valve stem. Standing on the well, the technician grasps the handle 1 and rotates it to rotate the screw sleeve 2 and valve wrench 3, thus turning the valve stem. During valve opening, the technician is not affected by the slippery environment or confined space in the well, making it easier to find a suitable point of force. After the valve wrench 3 is inserted into the well, it is placed on the valve stem, allowing the valve stem to extend into the movable cavity 6. Clamping blocks 8 are located on the front and rear sides of the valve stem. By rotating the handle, the handle drives the drive screw 5 to rotate within the internal threaded hole 4. The drive screw 5 engages with the internal threaded hole 4, causing the drive screw 5 to move up and down along the internal threaded hole 4. When clamping blocks 8 are needed to clamp the valve stem, the drive screw 5 is rotated along the internal threaded hole 4. As the internal threaded hole 4 descends, the drive screw 5 passes through the through hole and moves into the movable cavity 6, pushing the slide rail 7 downward. The drive screw 5 is axially connected to the top surface of the slide rail 7, and the slot 10 on the top of the clamping block 8 engages with the slide rail 7 and slides. The guide block 11 on the side of the clamping block 8 inserts into the guide groove 12. When the slide rail 7 descends, it pushes the clamping block 8, and the guide block 11 on the side of the clamping block 8 moves obliquely downward along the guide groove 12, causing the clamping blocks 8 to move along the slide rail 7 and come together, clamping the valve stem from both the front and rear sides. Simultaneously, the orientation of the slide rail 7 does not rotate with the drive screw 5. This allows technicians to operate the valve opener handle from the wellhead. The clamping blocks 8 extend downward and simultaneously close together, clamping the valve plate for rotation, adapting to different valve stem sizes. Precise operation can be achieved without changing the valve opener, avoiding interference from the downhole environment, simplifying the operation steps, and improving the overall efficiency and reliability of pipeline maintenance.

[0032] One end of the handle 1 is equipped with a pickaxe 39.

[0033] With a pickaxe head 39 at one end of the handle 1, the screw sleeve 2 is used as the pickaxe to pry up the manhole cover, eliminating the need to carry an additional iron pickaxe to open the manhole cover.

[0034] The handle includes a hand crank 13 threaded to the top of the drive screw 5 and a pair of locking nuts 14, which are respectively locked to the upper and lower sides of the hand crank 13.

[0035] The hand crank 13 is threadedly connected to the top of the drive screw 5 via a locking nut 14. The locking nut 14 is locked on the upper and lower sides of the hand crank 13, so that when the technician rotates the hand crank 13, it can drive the drive screw 5 to rotate. The hand crank 13 can be loosened by rotating the locking nut 14 in the opposite direction. Then, the hand crank 13 and the locking nut 14 can be removed from the drive screw 5 by rotating them in sequence. Other types of drive components such as straight handles and handwheels can be replaced and screwed onto the drive screw 5 for installation.

[0036] The lead screw sleeve 2 includes an upper sleeve 15, a lower sleeve 16, and an extension sleeve 17 that can be connected between the upper sleeve 15 and the lower sleeve 16. The upper sleeve 15, the lower sleeve 16, and the extension sleeve 17 are provided with connecting plates 18 on the outer sides of their respective connecting ends, and connecting bolts 19 that pass through the connecting plates 18 for fixing. The connecting plates 18 are provided with corresponding connection marks 20. The drive lead screw 5 is also provided with an extension lead screw 21. The top ends of both the drive lead screw 5 and the extension lead screw 21 are provided with square connecting grooves 22. The bottom end of the extension lead screw 21 is provided with a connecting block 23 that corresponds to the shape of the connecting groove 22. One side of the inner wall of the connecting groove 22 is provided with a contraction groove 24. The contraction groove 24 is provided with a connecting steel ball 25 and a support spring 26. One side of the connecting steel ball 25 extends out of the contraction groove 24. The support spring 26 is connected between the bottom of the contraction groove 24 and the connecting steel ball 25. The side of the connecting block 23 is provided with a steel ball groove 27 that corresponds to the position of the connecting steel ball 25.

[0037] By cooperating with the upper sleeve 15, lower sleeve 16, and extension sleeve 17, as well as the drive screw 5 and extension screw 21, the length of this valve opener can be flexibly adjusted to adapt to valve wells of different depths. The adjustment steps are as follows: 1) Rotate the handle off the drive screw 5; 2) Loosen the connecting bolts 19, rotate the upper sleeve 15 and extension sleeve 17 to the top of the drive screw 5, and then remove them; 3) Increase or decrease the number of extension sleeves 17 and arrange them sequentially between the upper sleeve 15 and lower sleeve 16; 4) Use the connecting block 23 to insert and remove the connecting slot 22 to increase / decrease the number of extension screws 21, thereby splicing / removing the extension screws 21 on the drive screw 5, ensuring that the total length of the screw matches the screw sleeve 2; 5) Rotate the extension sleeve 17 and upper sleeve 15 sequentially onto the spliced / removed screw, completing the docking with the lower sleeve 16; 6) Reinstall the handle at the top of the screw and remove the corresponding number of connecting bolts 19. Installed onto the connecting plate 18, the length of the valve opener is adjusted. When the connecting block 23 is inserted into the connecting groove 22, the side wall of the connecting block 23 squeezes the connecting steel ball 25 into the shrinkage groove 24, and the support spring 26 contracts to accumulate elastic force. After the connecting block 23 is fully inserted, the steel ball groove 27 on the side of the connecting block 23 aligns with the shrinkage groove 24. The support spring 26 exerts force to push one side of the connecting steel ball 25 out and into the steel ball groove 27, so that the extension screw 21 is not easy to fall off from the drive screw 5 or other extension screw 21 without being manually inserted or removed. In this connection case, the drive screw 5 and the extension screw 21 are connected to form a continuous external thread. The connecting plate 18 is provided with corresponding connection marks 20 to avoid the extension sleeve 17 being installed backwards and causing thread misalignment. When the connection marks 20 are aligned, the upper sleeve 15, the lower sleeve 16 and the extension sleeve 17 are connected to form a continuous internal thread.

[0038] The lower sleeve 16 is provided with a limiting plate 28 and a well cover hook. The limiting plate 28 is connected to the outer side of the lower sleeve 16. The well cover hook includes a connecting chain 29 and a pair of connecting hooks 30. The connecting hook 30 includes a horizontal rod 31 and a vertical rod 32. One end of the vertical rod 32 is connected to the chain 29, and the other end is connected to the horizontal rod 31 to form a T-shaped structure.

[0039] When it is necessary to open the concealed manhole cover, the valve wrench 3 is placed on the ground as a fulcrum, the limiting plate 28 on the outer side of the lower sleeve 16 faces upward, the connecting chain 29 is hung on the outside of the lower sleeve 16 and pressed on the limiting plate 28 to prevent the connecting chain 29 from sliding towards the valve wrench 3. Then, the horizontal rod 31 of the connecting hook 30 is inserted into the manhole cover hole, the vertical rod 32 is rotated to make the horizontal rod 31 perpendicular to the manhole cover, and the horizontal rod 31 can abut against the bottom surface of the manhole cover. Finally, the screw sleeve 2 is lifted with the valve wrench 3 as a fulcrum, and the manhole cover hook hanging on the lower sleeve 16 pulls the concealed manhole cover up and opens it, so that this valve opener can open more types of manhole covers.

[0040] The handle 1 is connected to a reinforcing rib 33. The two ends of the reinforcing rib 33 are respectively connected to the bottom of the handle 1 and the outer side of the upper sleeve 15 to form a triangular structure.

[0041] The reinforcing rib 33 is connected between the handle 1 and the upper sleeve 15 to form a triangular structure for support, which improves the structural strength of the handle 1 and the upper sleeve 15, avoids deformation and damage of the handle 1 due to the reaction force when rotating and turning the valve stem, and extends the service life.

[0042] The valve wrench 3 is connected to an underwater camera 34 facing downwards. The underwater camera 34 is equipped with a light and is connected to a waterproof data cable 35. The waterproof data cable 35 is connected to a controller 36. The controller 36 is equipped with a display screen 37. The underwater camera 34 and the controller 36 are also equipped with a Bluetooth communication module for signal connection.

[0043] Signals are transmitted between the underwater camera 34 and the controller 36 via a waterproof data cable 35. After the valve wrench 3 is lowered into the well, the controller 36 is operated to activate the underwater camera 34 and turn on its light to ensure sufficient light in the dark and water-filled valve well, enabling the camera to capture clear images. The images captured by the underwater camera 34 are transmitted to the controller 36 and displayed on the display screen 37 of the controller 36. This allows technicians to better understand the situation down in the well and facilitates the movement of the lead screw sleeve 2 above the well to align the valve wrench 3 with the valve stem. By installing a Bluetooth communication module on the underwater camera 34 and the controller 36 as an alternative to the waterproof data cable 35 for wireless transmission of image data, technicians can move the controller 36 more flexibly for use.

[0044] The valve wrench 3 is connected to a gas detection sensor 38, which is electrically connected to the controller 36. The controller 36 is equipped with a voice alarm.

[0045] Before inserting the valve wrench 3 into the valve well, the valve wrench 3 is placed at the wellhead. The controller 36 sends an electrical signal to activate the gas detection sensor 38 to detect the gas concentration in the well. The detected data is fed back to the controller 36, and the voice alarm issues a corresponding intelligent prompt voice.

[0046] This valve opener can be made of explosion-proof materials. The selected underwater camera 34 and lighting lamp 36 are explosion-proof camera and explosion-proof lamp respectively, to avoid the complete destruction of the equipment caused by the explosion caused by gas leakage.

Claims

1. A multi-functional visual valve opener for confined underground spaces, characterized in that: The device includes a handle (1), a lead screw sleeve (2), and a valve wrench (3). The lead screw sleeve (2) has an internal threaded hole (4) at its central shaft and is threadedly connected to a drive screw (5). The handle (1) is a crossbar connected to the top of the lead screw sleeve (2). The valve wrench (3) is connected to the bottom of the lead screw sleeve (2). The bottom surface of the valve wrench (3) has a movable cavity (6). The movable cavity (6) has a sliding rail (7) extending forward and backward and a pair of clamping blocks (8). The top of the movable cavity (6) has a through hole communicating with the internal threaded hole (4). The bottom end of the drive screw (5) passes through the through hole and connects with the internal threaded hole (4). The top surface of the slide rail (7) is axially connected, and the top end extends out of the lead screw sleeve (2) and is connected to a handle. There is an movable gap (9) between the handle and the lead screw sleeve (2). The top of the clamping block (8) is provided with a slot (10) for locking onto the slide rail (7) and sliding. There are guide blocks (11) on the left and right sides of the clamping block (8). The guide plate is inclined and the bottom end is biased towards the opposite side of the clamping block (8). The left and right inner walls of the movable cavity (6) are provided with guide grooves (12) for the guide blocks (11) to be inserted. The length direction of the guide groove (12) corresponds to the inclination direction of the guide block (11).

2. The multi-functional visual valve opener for sealed downhole spaces according to claim 1, characterized in that: A pickaxe (39) is provided at one end of the handle (1).

3. The multi-functional visual valve opener for sealed downhole spaces according to claim 1, characterized in that: The handle includes a hand crank (13) threaded to the top of the drive screw (5) and a pair of locking nuts (14), which are respectively locked on the upper and lower sides of the hand crank (13).

4. The multi-functional visual valve opener for sealed downhole spaces according to claim 3, characterized in that: The lead screw sleeve (2) includes an upper sleeve (15), a lower sleeve (16), and an extension sleeve (17) that can be connected between the upper sleeve (15) and the lower sleeve (16). The upper sleeve (15), the lower sleeve (16), and the extension sleeve (17) are provided with connecting plates (18) on the outer sides of their respective connecting ends, and connecting bolts (19) that pass through the connecting plates (18) for fixing. The connecting plates (18) are provided with corresponding connection marks (20). The drive lead screw (5) is also provided with an extension lead screw (21). The top ends of the drive lead screw (5) and the extension lead screw (21) are both A square connecting groove (22) is provided. The bottom end of the extension screw (21) is provided with a connecting block (23) corresponding to the shape of the connecting groove (22). A shrinkage groove (24) is provided on one side of the inner wall of the connecting groove (22). A connecting steel ball (25) and a support spring (26) are provided in the shrinkage groove (24). One side of the connecting steel ball (25) extends out of the shrinkage groove (24). The support spring (26) is connected between the bottom of the shrinkage groove (24) and the connecting steel ball (25). A steel ball groove (27) corresponding to the position of the connecting steel ball (25) is provided on the side of the connecting block (23).

5. The multi-functional visual valve opener for sealed downhole spaces according to claim 4, characterized in that: The lower sleeve (16) is provided with a limiting plate (28) and a well cover hook. The limiting plate (28) is connected to the outer side of the lower sleeve (16). The well cover hook includes a connecting chain (29) and a pair of connecting hooks (30). The connecting hook (30) includes a horizontal rod (31) and a vertical rod (32). One end of the vertical rod (32) is connected to the chain (29), and the other end is connected to the horizontal rod (31) to form a T-shaped structure.

6. The multi-functional visual valve opener for sealed downhole spaces according to claim 4, characterized in that: The handle (1) is connected to a reinforcing rib (33), and the two ends of the reinforcing rib (33) are respectively connected to the bottom of the handle (1) and the outer side of the upper sleeve (15) to form a triangular structure.

7. The multi-functional visual valve opener for confined spaces in downhole mines according to claim 1, characterized in that: The valve wrench (3) is connected to an underwater camera (34) facing downwards. The underwater camera (34) is equipped with a light and connected to a waterproof data cable (35). The waterproof data cable (35) is connected to a controller (36). The controller (36) is equipped with a display screen (37). The underwater camera (34) and the controller (36) are also equipped with a Bluetooth communication module for signal connection.

8. The multi-functional visual valve opener for sealed downhole spaces according to claim 7, characterized in that: The valve wrench (3) is connected to a gas detection sensor (38), which is electrically connected to the controller (36). The controller (36) is equipped with a voice alarm.

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