High pressure balanced cage cartridge regulator valve and method of assembly

Abstract

The application relates to the technical field of sleeve valves, in particular to a high-pressure-difference balanced cage sleeve regulating valve and an assembling method thereof. The sleeve regulating valve comprises a pneumatic diaphragm actuator, a fixed stand column below the pneumatic diaphragm actuator, a fixed upper valve cover at the bottom end of the stand column, and a fixed valve body below the upper valve cover. A sleeve valve cage is fixed in the valve body. A valve core column body in which a piston slides is arranged in the sleeve valve cage. A valve rod is fixed at the top end of the valve core column body, and the valve rod penetrates the upper valve cover. A cavity groove is arranged in the valve core column body to arrange a cleaning wall mechanism. An integrated brush device is arranged in the valve core column body. The integrated brush device ascends and descends along the inner wall of the sleeve valve cage to remove impurities on the inner wall of a single vertical section area of the sleeve valve cage. Meanwhile, the integrated brush device slowly rotates to comprehensively clean the inner wall of the sleeve valve cage. The removed impurities are absorbed nearby and transferred and discharged through a discharge pipe.

Description

Technical Field

[0001] This invention relates to the field of sleeve valve technology, specifically to a high-pressure differential balanced cage sleeve regulating valve and its assembly method. Background Technology

[0002] Cage control valves, also known as sleeve control valves, belong to the pressure-balanced control valve category. Cage control valves consist of components such as valve body, sleeve valve cage, valve core, valve seat, sealing gasket, and upper valve cover. The sleeve is the key component that determines the valve's performance. It is a cylindrical metal cage structure with various shapes of throttling windows machined on its side walls.

[0003] The small gap between the valve core and the valve cage ensures smooth movement of the valve core within the cage, reducing offset or wobbling, thereby improving the linearity and repeatability of flow control. However, viscous solutions can easily cause jamming or blockage, or impurities can enter the precision gap, leading to valve core jamming or wear. A filter is usually installed before the valve, but small impurities can still pass through the filter and intrude into the gap between the valve core and the valve cage, affecting the regulating accuracy of the cage-type sleeve valve.

[0004] If the sleeve valve is disassembled for cleaning, the fluid medium delivery system needs to be shut down, the sleeve valve removed, and then the valve core and valve cage separated to clean the contact wall between them. This method is cumbersome and time-consuming, and forcibly interrupts the medium fluid delivery operation. Therefore, the present invention provides a high pressure differential balanced cage sleeve regulating valve and its assembly method. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure differential balanced cage sleeve regulating valve and its assembly method, so as to solve the problem of cleaning impurities in the gap between the valve core and the valve cage mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure differential balanced cage-type sleeve regulating valve, comprising a pneumatic diaphragm actuator, a column fixed below the pneumatic diaphragm actuator, an upper valve cover fixed at the bottom of the column, and a valve body fixed below the upper valve cover. A sleeve valve cage is fixed within the valve body, and a valve core column with a piston sliding is disposed within the sleeve valve cage. A valve stem is fixed to the top of the valve core column, and the valve stem penetrates the upper valve cover. A cavity is formed in the valve core column to accommodate a cleaning wall mechanism, the cleaning wall mechanism comprising:

[0007] An integrated brush device that moves up and down along the inner wall of the sleeve valve cage. After the valve core column blocks the sleeve valve cage, the moving integrated brush device rotates with the valve core column to clean the inner wall of the sleeve valve cage.

[0008] A discharge tube slides in a slot at the center of the valve core column. One end of the discharge tube is connected to the integrated brush device, and the other end extends into the lower chamber of the valve body.

[0009] The wall cleaning mechanism also includes:

[0010] The lead screw is used to drive the integrated brush device to lift and lower; the long shaft gear is used to drive the integrated brush device to operate and clean; and the guide frame is fixed in the valve core column and used to support the lead screw and the long shaft gear at the same time.

[0011] Simultaneously, a conversion device for establishing transmission with the lead screw and long shaft gear, and an inlet shaft for the transmission conversion device, the top end of the inlet shaft extending to the outside of the valve core column, and a fixed gear at the top end of the inlet shaft to mesh with the internal gear cylinder provided on the top of the sleeve valve cage for transmission.

[0012] The integrated brush device includes a closed-loop chain, brushes fixed at fixed intervals on the outside of the closed-loop chain, a power component for driving the closed-loop chain, and a suction component for absorbing impurities on the brushes. The closed-loop chain is provided with an arc-shaped segment to drive the brushes to move in an arc shape, thereby cleaning the inner wall of the sleeve valve cage.

[0013] The power component includes a crescent frame for internally supporting the closed-loop chain, a suspension fixed between the crescent frame and the discharge pipe, a sprocket for driving the closed-loop chain, and a support shaft assembly for driving between the sprocket and the long shaft gear. A prism is provided on the guide frame to slide through a prism hole opened in the suspension, and a lead screw passes through a threaded hole opened in the suspension.

[0014] The suction component includes an arc-shaped groove box, a constricting cylinder fixedly connected to the arc-shaped groove box, a rigid curved pipe fixedly connected between the constricting cylinder and the discharge pipe, and a discharge assembly for sealing the constricting cylinder. The discharge assembly is driven by a sprocket.

[0015] The discharge assembly includes a conical column blocking the constriction point of the constriction cylinder, a rail seat fixed to the outside of the arc-shaped groove box, an L-shaped opening and closing column that slides in a direction under the support and guidance of the rail seat, and a return spring piece placed between the rail seat and the L-shaped opening and closing column. The end of the return spring piece is fixed to the rail seat. A protrusion is provided on the L-shaped opening and closing column to be fixedly connected to the conical column. A notch is opened on the constriction cylinder shell to allow the protrusion on the L-shaped opening and closing column to move. One end of the L-shaped opening and closing column rests on the sprocket.

[0016] The support shaft assembly includes an input shaft fixedly connected to a sprocket, a traveling shaft parallel to one side of the long shaft gear, and a slant shaft that drives between the traveling shaft and the input shaft. A fixed gear on the traveling shaft meshes with the long shaft gear for transmission. The traveling shaft, slant shaft, and input shaft are all mounted on the suspension.

[0017] The conversion device includes a long horizontal shaft with one end perpendicular to the input shaft, a vertical shaft with the other end of the long horizontal shaft, a wheel fixed at the bottom of the vertical shaft, a reciprocating assembly with transmission between the wheel and the lead screw, a short horizontal shaft with transmission at the top of the long shaft gear, a side shaft with transmission between the short horizontal shaft and the wheel with an external gear ring, and a top frame fixed on the valve core column. The long horizontal shaft, the vertical shaft, the short horizontal shaft and the side shaft are all mounted on the top frame.

[0018] The reciprocating assembly includes a disc gear for transmission with a fixed gear at the top of the lead screw, a booster shaft fixed in the middle of the disc gear, an L-shaped rack for transmission with a fixed gear at the end of the booster shaft, and a swing plate with one end hinged to the L-shaped rack. The other end of the swing plate is hinged to a wheel. The L-shaped rack slides in a directional manner under the support of the top frame. The booster shaft is mounted on the top frame.

[0019] A method for assembling a high-pressure differential balanced cage sleeve regulating valve includes the following steps:

[0020] Step 1: Preparation and inspection. Clean the valve body, upper valve cover, sleeve valve cage and valve core column, etc., to ensure that there are no impurities, scratches or damage. Install the cleaning wall mechanism in the valve core column.

[0021] Step 2: Place the sleeve valve cage into the valve body, making sure to align the hole to avoid misalignment that could lead to poor sealing. Insert the valve core into the sleeve valve cage, ensuring that the valve core slides freely within the sleeve valve cage and that the guide surface fits well.

[0022] Step 3: Place the upper valve cover on the valve body, align the valve stem through the middle of the upper valve cover, tighten the screws between the upper valve cover and the valve body, then assemble the pneumatic diaphragm actuator and the column, and finally assemble and connect the column and the upper valve cover.

[0023] Step 4: Confirm that all fasteners are secure and that the actuator operates smoothly without any abnormal noise or vibration.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention eliminates the need to disassemble the sleeve valve cage and valve core column for cleaning. After the cage-type sleeve valve is closed, comprehensive cleaning can be achieved by controlling the rotation of the valve core column, removing impurities from the gap between the sleeve valve cage and the valve core column, thereby ensuring that the fluid conveying system can be quickly put into subsequent use. The valve core column of this invention is equipped with an integrated brush device. The integrated brush device moves up and down along the inner wall of the sleeve valve cage to remove impurities on the inner wall of a single vertical section of the sleeve valve cage. At the same time, the integrated brush device slowly rotates around to thoroughly clean the inner wall of the sleeve valve cage. The cleaned impurities are absorbed nearby and transferred away through the discharge pipe.

[0026] 2. In this invention, impurities on the inner wall of the sleeve valve cage are swept off, and the sleeve valve cage and the valve core column continue to be in contact. If there are impurities on the valve core column, the impurities will adhere to the sleeve valve cage. Subsequently, the inner wall of the sleeve valve cage is cleaned to remove the newly attached impurities. After multiple cleanings, the amount of impurities in the gap between the sleeve valve cage and the valve core column gradually decreases until the sleeve valve cage and the valve core column no longer slide, rub, or get stuck. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a schematic diagram showing the position of the sleeve valve cage.

[0029] Figure 3 This is a schematic diagram showing the position of the valve core column.

[0030] Figure 4 This is a schematic diagram of the valve stem position.

[0031] Figure 5 This is a schematic diagram showing the location of the integrated brush device.

[0032] Figure 6 This is a schematic diagram of the integrated brush device.

[0033] Figure 7 This is a schematic diagram showing the location of the conversion device.

[0034] Figure 8 This is a diagram showing the location of the brush.

[0035] Figure 9 This is a schematic diagram of the support shaft assembly.

[0036] Figure 10 This is a schematic diagram of the sprocket position.

[0037] Figure 11 This is a schematic diagram of the discharge pipe structure.

[0038] Figure 12 This is a schematic diagram showing the location of the discharge components.

[0039] Figure 13 This is a schematic diagram of the discharge assembly structure.

[0040] Figure 14 This is a schematic diagram of the conversion device.

[0041] Figure 15 This is a schematic diagram of the reciprocating component structure.

[0042] Figure 16 This is a schematic diagram of an L-shaped rack and pinion structure.

[0043] In the diagram: 1. Pneumatic diaphragm actuator; 2. Column; 3. Upper valve cover; 4. Valve body; 5. Sleeve valve cage; 6. Valve core column; 7. Valve stem; 8. Cleaning wall mechanism; 9. Integrated brush device; 10. Lead screw; 11. Long shaft gear; 12. Guide frame; 13. Conversion device; 14. Inlet shaft; 15. Discharge pipe; 16. Closed-loop chain; 17. Brush; 18. Power unit; 19. Suction unit; 20. Crescent frame; 21. Suspension; 22. Sprocket; 23. Support shaft assembly. Follower shaft 231, inclined shaft 232, input shaft 233, arc-shaped groove box 24, constriction tube 25, rigid curved tube 26, discharge assembly 27, conical column 271, rail seat 272, L-shaped opening and closing column 273, return spring 274, long horizontal shaft 28, vertical shaft 29, wheel 30, reciprocating assembly 31, short horizontal shaft 32, side position shaft 33, top position frame 34, L-shaped rack 35, swing plate 36, disc gear 37, booster shaft 38. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1 to 16 This invention provides a technical solution: a high-pressure differential balanced cage-type sleeve regulating valve, comprising a pneumatic diaphragm actuator 1, a column 2 fixed below the pneumatic diaphragm actuator 1, an upper valve cover 3 fixed at the bottom of the column 2, and a valve body 4 fixed below the upper valve cover 3. A sleeve valve cage 5 is fixed in the valve body 4, and a valve core column 6 with a piston sliding is provided in the sleeve valve cage 5. A valve stem 7 is fixed at the top of the valve core column 6, and the valve stem 7 passes through the upper valve cover 3. A cavity is formed in the valve core column 6 to provide a cleaning wall mechanism 8, which includes:

[0046] The integrated brush device 9, which moves up and down along the inner wall of the sleeve valve cage 5, cleans the inner wall of the sleeve valve cage 5 after the valve core column 6 blocks the sleeve valve cage 5 and rotates with the valve core column 6.

[0047] The discharge tube 15 slides in the slot at the center of the valve core column 6. One end of the discharge tube 15 is connected to the integrated brush device 9, and the other end of the discharge tube 15 extends into the lower chamber of the valve body 4.

[0048] Reference Appendix Figure 5 and attached Figure 6 It is understood that the wall cleaning mechanism 8 also includes:

[0049] The integrated brush device 9 is equipped with a lead screw 10 for driving the lifting and lowering of the integrated brush device 9, a long shaft gear 11 for driving the integrated brush device 9 to operate and clean, and a guide frame 12 fixed in the valve core column 6 for simultaneously supporting the lead screw 10 and the long shaft gear 11. The long shaft gear 11 has a shaft at its end, and the shaft is movably sleeved in a through hole opened on the guide frame 12. The shaft at the end of the lead screw 10 is also movably sleeved in a through hole opened on the guide frame 12.

[0050] Simultaneously, a conversion device 13 establishes a transmission with the lead screw 10 and the long shaft gear 11, and an inlet shaft 14 for the transmission conversion device 13. The top end of the inlet shaft 14 extends to the outside of the valve core column 6, and a gear is fixed at the top end of the inlet shaft 14 to mesh with the internal gear cylinder provided on the top of the sleeve valve cage 5 for transmission.

[0051] Reference Appendix Figure 8 The integrated brush device 9 includes a closed-loop chain 16, brushes 17 fixed at fixed intervals on the outside of the closed-loop chain 16, a power component 18 for driving the closed-loop chain 16, and a suction component 19 for absorbing impurities on the brushes 17. An arc-shaped section is provided on the closed-loop chain 16 to drive the brushes 17 to move in an arc shape, thereby cleaning the inner wall of the sleeve valve cage 5. During the arc-shaped movement, the brushes 17 contact the inner wall of the sleeve valve cage 5, achieving a scraping cleaning effect. From an overall cleaning perspective, the closed-loop chain 16 conveys multiple brushes 17, which clean a portion of the inner wall of the sleeve valve cage 5. Simultaneously, the multiple brushes 17 rise and fall along the inner wall of the sleeve valve cage 5, cleaning a vertical section of the sleeve valve cage 5. Furthermore, the integrated brush device 9 is guided and restricted by a guide frame 12. The guide frame 12 and the valve core column 6 rotate synchronously, so the integrated brush device 9 rotates along with the guide frame 12, and all the multiple sections of the sleeve valve cage 5 can be cleaned, that is, the inner wall of the sleeve valve cage 5 is thoroughly cleaned. After the impurities on the inner wall of the sleeve valve cage 5 are removed, the impurity content in the gap between the sleeve valve cage 5 and the valve core column 6 is reduced, and the friction and jamming between the sleeve valve cage 5 and the valve core column 6 disappears. If impurities are attached to the outer wall of the valve core column 6, the impurities on the inner wall of the sleeve valve cage 5 will disappear, and the two will come into contact and stick together. The impurities on the valve core column 6 will adhere to the sleeve valve cage 5. It is only necessary to continue cleaning the sleeve valve cage 5. In this way, through repeated cleaning of the inner wall of the sleeve valve cage 5, the impurity content in the gap between the valve core column 6 and the sleeve valve cage 5 gradually decreases until the friction and jamming between the valve core column 6 and the sleeve valve cage 5 disappears.

[0052] Reference Appendix Figure 9 and attached Figure 10Understandably, the power unit 18 includes a crescent frame 20 for internally supporting the closed-loop chain 16, a suspension 21 fixed between the crescent frame 20 and the discharge pipe 15, a sprocket 22 for driving the closed-loop chain 16, and a support shaft assembly 23 for driving between the sprocket 22 and the long shaft gear 11. A prism is provided on the guide frame 12 to slide through the prism hole opened on the suspension 21, and the lead screw 10 passes through the threaded hole opened on the suspension 21.

[0053] Reference Appendix Figure 12 Understandably, the suction component 19 includes an arc-shaped groove box 24, a constricting tube 25 fixedly connected to the arc-shaped groove box 24, a rigid curved tube 26 fixedly connected between the constricting tube 25 and the discharge tube 15, and a discharge assembly 27 for sealing the constricting tube 25. The discharge assembly 27 and the sprocket 22 are driven by contact.

[0054] The discharge assembly 27 includes a conical column 271 that plugs the constriction point of the constriction cylinder 25, a rail seat 272 fixed to the outside of the arc-shaped groove box 24, an L-shaped opening and closing column 273 that slides in a direction under the support and guidance of the rail seat 272, and a return spring 274 placed between the rail seat 272 and the L-shaped opening and closing column 273. The end of the return spring 274 is fixed to the rail seat 272. The L-shaped opening and closing column 273 is provided with a protrusion to be fixedly connected to the conical column 271. The constriction cylinder 25 shell has a notch for the protrusion on the L-shaped opening and closing column 273 to move. One end of the L-shaped opening and closing column 273 rests on the sprocket 22. The rail seat 272 is provided with a T-shaped column to be inserted into the T-shaped groove on the L-shaped opening and closing column 273.

[0055] The support shaft assembly 23 includes an input shaft 233 fixedly connected to the sprocket 22, a traveling shaft 231 parallel to one side of the long shaft gear 11, and a slant shaft 232 that drives between the traveling shaft 231 and the input shaft 233. A gear is fixed on the traveling shaft 231 to mesh with the long shaft gear 11 for transmission. The traveling shaft 231, the slant shaft 232, and the input shaft 233 are all mounted on the suspension 21. Specifically, the traveling shaft 231, the slant shaft 232, and the input shaft 233 are respectively movably sleeved in different through holes opened on the suspension 21. A bevel gear is fixed at one end of the slant shaft 232 to drive in opposite directions with the bevel gear fixed at the top of the input shaft 233, and a bevel gear is fixed at the other end of the slant shaft 232 to drive in opposite directions with the bevel gear fixed at the top of the traveling shaft 231.

[0056] The rotation of the lead screw 10 causes the integrated brush device 9 to rise and fall: the rotation of the lead screw 10 drives the suspension 21 to rise and fall, the suspension 21 drives the crescent frame 20, and then drives the closed-loop chain 16 to rise and fall. The brush 17 fixed on the chain link of the closed-loop chain 16 rises and falls along with it. The brush 17 replaces the inner wall area of ​​the sleeve valve cage 5 for cleaning.

[0057] The rotation of the long shaft gear 11 causes the integrated brush device 9 to clean: the support shaft assembly 23 rises and falls with the suspension 21, but the meshing transmission between the fixed gear at the end of the traveling shaft 231 and the long shaft gear 11 is always present. The long shaft gear 11 drives the traveling shaft 231, and then drives the input shaft 233 through the slant shaft 232. In turn, the sprocket 22 rotates, causing the closed-loop chain 16 to transport. The closed-loop chain 16 drives the brush 17. When the brush 17 is transported along the arc route, it contacts the inner wall of the sleeve valve cage 5, and then scrapes and cleans the inner wall of the sleeve valve cage 5.

[0058] The cleaned-up impurities, as well as those adhering to the brush 17, are absorbed and transferred nearby. Specifically, the arc-shaped groove box 24 absorbs the impurities, which then enter the closing cylinder 25. The conical column 271 intermittently releases impurities into the closing cylinder 25. During release, the impurities are injected into the rigid curved pipe 26 and then discharged through the discharge pipe 15. The impurity flow is driven by the pressure difference between the upper and lower chambers of the valve body 4. The intermittent release of impurities into the closing cylinder 25 is due to the sprocket 22 rotating and actuating the L-shaped opening and closing column 273, which in turn drives the conical column 271 to reciprocate. Figure 13 The conical column 271 repeatedly retracts, exposing the closing part of the closing cylinder 25 during this process, allowing impurities to flow into the rigid curved pipe 26. To add: at the end of the cleaning operation, the conical column 271 stably seals the closing position of the closing cylinder 25 because the column on the L-shaped opening and closing column 273 falls into the groove on the sprocket 22. This requires controlling the number of rotations of the sprocket 22. This can be achieved by controlling the number of rotations or the angle of the valve stem 7 at the set drive source. In other words, the valve stem 7 is connected to the upper long shaft gear 11, controlling its lifting and lowering. The valve stem 7 drives the valve core column 6, causing it to slide like a piston within the sleeve valve cage 5. Simultaneously, the valve stem 7 is externally connected to a conventional rotary drive mechanism, allowing the rotation angle or number of rotations of the valve stem 7 to be controlled and set.

[0059] Reference Appendix Figure 14The conversion device 13 includes a long horizontal shaft 28 with one end perpendicular to the inlet shaft 14, a vertical shaft 29 with the other end of the long horizontal shaft 28, a wheel 30 fixed at the bottom of the vertical shaft 29, a reciprocating assembly 31 that drives between the wheel 30 and the lead screw 10, a short horizontal shaft 32 that drives at the top of the long shaft gear 11, a side shaft 33 that drives between the short horizontal shaft 32 and the wheel 30 with an external gear ring, and a top frame 34 fixed on the valve core column 6. The long horizontal shaft 28, the vertical shaft 29, the short horizontal shaft 32, and the side shaft 33 are all mounted on the top frame 34, and a bevel gear is fixed at the bottom of the inlet shaft 14. The long horizontal shaft 28 is fixed at one end with a bevel gear for reversing transmission. The other end of the long horizontal shaft 28 is fixed with a bevel gear for reversing transmission with the top of the vertical shaft 29. The top shaft of the long shaft gear 11 is fixed with a bevel gear for reversing transmission with the one end of the short horizontal shaft 32. The top of the side shaft 33 is fixed with a bevel gear for reversing transmission with the other end of the short horizontal shaft 32. The bottom of the side shaft 33 is fixed with a gear for meshing transmission with the external gear ring on the wheel 30. The long horizontal shaft 28, the vertical shaft 29, the short horizontal shaft 32 and the side shaft 33 are respectively movably sleeved in different through holes opened on the top frame 34.

[0060] The reciprocating assembly 31 includes a disc gear 37 for transmission with the fixed gear at the top of the lead screw 10, a booster shaft 38 fixed in the middle of the disc gear 37, an L-shaped rack 35 for transmission with the fixed gear at the end of the booster shaft 38, and a swing plate 36 with one end hinged to the L-shaped rack 35. The other end of the swing plate 36 is hinged to the wheel 30. The L-shaped rack 35 slides in a direction under the support of the top frame 34. The booster shaft 38 is mounted on the top frame 34. A long rail post is provided on the L-shaped rack 35 to fit into the rail groove opened on the top frame 34. The booster shaft 38 is movably sleeved in the shaft hole opened on the top frame 34.

[0061] The transmission path between the lead shaft 14 and the lead screw 10 is as follows: the valve stem 7 drives the valve core column 6 to rotate, the valve core column 6 drives the lead shaft 14, the gear fixed at the top of the lead shaft 14 rotates around and meshes with the internal gear cylinder on the stationary sleeve valve cage 5. In this way, the gear fixed at the top of the lead shaft 14 drives the lead shaft 14 to rotate, the lead shaft 14 drives the long horizontal shaft 28, and then the vertical shaft 29 drives the wheel 30 to rotate, causing the swing plate 36 to swing and push and pull. Next, the L-shaped rack 35 moves back and forth, causing the booster shaft 38 to rotate back and forth. Then the disc gear 37 rotates back and forth to drive the lead screw 10. The lead screw 10 rotates forward for many turns and then reverses by the same number of turns, thereby driving the integrated brush device 9 to rise and fall.

[0062] The transmission path between the shaft 14 and the long shaft gear 11 is as follows: the wheel 30 rotates in a directional manner, the external gear ring on the wheel 30 drives the side shaft 33, and then drives the long shaft gear 11 through the short horizontal shaft 32. The rotation of the long shaft gear 11 causes the integrated brush device 9 to perform cleaning work.

[0063] A method for assembling a high-pressure differential balanced cage sleeve regulating valve includes the following steps:

[0064] Step 1: Preparation and inspection. Clean the valve body 4, upper valve cover 3, sleeve valve cage 5 and valve core column 6, etc., to ensure that there are no impurities, scratches or damage. Install the cleaning wall mechanism 8 into the valve core column 6.

[0065] Step 2: Place the sleeve valve cage 5 into the valve body 4, making sure to align the hole to avoid misalignment that could lead to poor sealing. Insert the valve core column 6 into the sleeve valve cage 5, ensuring that the valve core column 6 slides freely in the sleeve valve cage 5 and that the guide surface fits well.

[0066] Step 3: Place the upper valve cover 3 on the valve body 4, align the valve stem 7 through the middle of the upper valve cover 3, tighten the screws between the upper valve cover 3 and the valve body 4, then assemble the pneumatic diaphragm actuator 1 and the column 2, and then assemble and connect the column 2 and the upper valve cover 3.

[0067] Step 4: Confirm that all fasteners are secure and that the actuator operates smoothly without any abnormal noise or vibration.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure differential balanced cage-type sleeve regulating valve, comprising a pneumatic diaphragm actuator, a column fixed below the pneumatic diaphragm actuator, an upper valve cover fixed at the bottom of the column, and a valve body fixed below the upper valve cover, characterized in that: A sleeve valve cage is fixed in the valve body, and a valve core column with a piston sliding is disposed in the sleeve valve cage. A valve stem is fixed to the top of the valve core column and passes through the upper valve cover. A cavity is formed in the valve core column to accommodate a cleaning wall mechanism, which includes: An integrated brush device that moves up and down along the inner wall of the sleeve valve cage. After the valve core column blocks the sleeve valve cage, the moving integrated brush device rotates with the valve core column to clean the inner wall of the sleeve valve cage. A discharge tube slides in a slot at the center of the valve core column. One end of the discharge tube is connected to the integrated brush device, and the other end extends into the lower chamber of the valve body.

2. The high-pressure differential balanced cage sleeve regulating valve according to claim 1, characterized in that: The wall cleaning mechanism also includes: The lead screw is used to drive the integrated brush device to lift and lower; the long shaft gear is used to drive the integrated brush device to operate and clean; and the guide frame is fixed in the valve core column and used to support the lead screw and the long shaft gear at the same time. Simultaneously, a conversion device for establishing transmission with the lead screw and long shaft gear, and an inlet shaft for the transmission conversion device, the top end of the inlet shaft extending to the outside of the valve core column, and a fixed gear at the top end of the inlet shaft to mesh with the internal gear cylinder provided on the top of the sleeve valve cage for transmission.

3. The high-pressure differential balanced cage sleeve regulating valve according to claim 2, characterized in that: The integrated brush device includes a closed-loop chain, brushes fixed at fixed intervals on the outside of the closed-loop chain, a power component for driving the closed-loop chain, and a suction component for absorbing impurities on the brushes. The closed-loop chain is provided with an arc-shaped segment to drive the brushes to move in an arc shape, thereby cleaning the inner wall of the sleeve valve cage.

4. The high-pressure differential balanced cage sleeve regulating valve according to claim 3, characterized in that: The power component includes a crescent frame for internally supporting the closed-loop chain, a suspension fixed between the crescent frame and the discharge pipe, a sprocket for driving the closed-loop chain, and a support shaft assembly for driving between the sprocket and the long shaft gear. A prism is provided on the guide frame to slide through a prism hole opened in the suspension, and a lead screw passes through a threaded hole opened in the suspension.

5. A high-pressure differential balanced cage sleeve regulating valve according to claim 4, characterized in that: The suction component includes an arc-shaped groove box, a constricting cylinder fixedly connected to the arc-shaped groove box, a rigid curved pipe fixedly connected between the constricting cylinder and the discharge pipe, and a discharge assembly for sealing the constricting cylinder. The discharge assembly is driven by a sprocket.

6. A high-pressure differential balanced cage sleeve regulating valve according to claim 5, characterized in that: The discharge assembly includes a conical column blocking the constriction point of the constriction cylinder, a rail seat fixed to the outside of the arc-shaped groove box, an L-shaped opening and closing column that slides in a direction under the support and guidance of the rail seat, and a return spring piece placed between the rail seat and the L-shaped opening and closing column. The end of the return spring piece is fixed to the rail seat. A protrusion is provided on the L-shaped opening and closing column to be fixedly connected to the conical column. A notch is opened on the constriction cylinder shell to allow the protrusion on the L-shaped opening and closing column to move. One end of the L-shaped opening and closing column rests on the sprocket.

7. A high-pressure differential balanced cage sleeve regulating valve according to claim 4, characterized in that: The support shaft assembly includes an input shaft fixedly connected to a sprocket, a traveling shaft parallel to one side of the long shaft gear, and a slant shaft that drives between the traveling shaft and the input shaft. A fixed gear on the traveling shaft meshes with the long shaft gear for transmission. The traveling shaft, slant shaft, and input shaft are all mounted on the suspension.

8. A high-pressure differential balanced cage sleeve regulating valve according to claim 2, characterized in that: The conversion device includes a long horizontal shaft with one end perpendicular to the input shaft, a vertical shaft with the other end of the long horizontal shaft, a wheel fixed at the bottom of the vertical shaft, a reciprocating assembly with transmission between the wheel and the lead screw, a short horizontal shaft with transmission at the top of the long shaft gear, a side shaft with transmission between the short horizontal shaft and the wheel with an external gear ring, and a top frame fixed on the valve core column. The long horizontal shaft, the vertical shaft, the short horizontal shaft and the side shaft are all mounted on the top frame.

9. A high-pressure differential balanced cage sleeve regulating valve according to claim 8, characterized in that: The reciprocating assembly includes a disc gear for transmission with a fixed gear at the top of the lead screw, a booster shaft fixed in the middle of the disc gear, an L-shaped rack for transmission with a fixed gear at the end of the booster shaft, and a swing plate with one end hinged to the L-shaped rack. The other end of the swing plate is hinged to a wheel. The L-shaped rack slides in a directional manner under the support of the top frame. The booster shaft is mounted on the top frame.

10. A method for assembling a high-pressure differential balanced cage sleeve regulating valve, used in the high-pressure differential balanced cage sleeve regulating valve as described in claim 1, characterized in that, Includes the following steps: Step 1: Preparation and inspection. Clean the valve body, upper valve cover, sleeve valve cage and valve core column, etc., to ensure that there are no impurities, scratches or damage. Install the cleaning wall mechanism in the valve core column. Step 2: Place the sleeve valve cage into the valve body, making sure to align the hole to avoid misalignment that could lead to poor sealing. Insert the valve core into the sleeve valve cage, ensuring that the valve core slides freely within the sleeve valve cage and that the guide surface fits well. Step 3: Place the upper valve cover on the valve body, align the valve stem through the middle of the upper valve cover, tighten the screws between the upper valve cover and the valve body, then assemble the pneumatic diaphragm actuator and the column, and finally assemble and connect the column and the upper valve cover. Step 4: Confirm that all fasteners are secure and that the actuator operates smoothly without any abnormal noise or vibration.

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