High-pressure lifting type plug valve

Abstract

The utility model relates to the technical field of plug valves, in particular to a high-pressure lifting type plug valve, and the service life of the high-pressure lifting type plug valve is prolonged. The valve body is of a three-way structure, an inlet is formed in the bottom of the valve body, outlets are formed in the left side and the right side of the valve body respectively, a lining is arranged in the center of the valve body, a plug cock is arranged in the lining, multiple circles of padding are arranged between the plug cock and the lining and pressed through a pressing sleeve, and an anti-blowing-out plate fixed through a second screw is arranged above the valve body. The blow-out prevention plate is designed in a split mode, the nut can press the filler through the pressing sleeve and is fixed through the locking nut, the valve rod is arranged above the plug cock, the upper portion of the transition plate is connected with the bevel gear reducer, the lower portion of the transition plate is connected with the valve body through the support plate and the support sleeve, and the rotation prevention plate is installed between the transition plate and the support plate. The valve rod threaded sleeve is arranged in the bevel gear speed reducer and matched with the bevel gear speed reducer through T-shaped threads, and a rod of the limiting mechanism is inserted into a hole of the positioning plate.

Description

Technical Field

[0001] This utility model relates to the technical field of plug valves, and in particular to high-pressure lift plug valves. Background Technology

[0002] A plug valve is a rotary valve with a shut-off element or plunger. It is opened or closed by rotating the plug 90 degrees to open or close the passage on the plug relative to the passage on the valve body. The plug can be cylindrical or conical. In cylindrical plugs, the passage is typically rectangular; in conical plugs, the passage is trapezoidal. Plug valves are lightweight and suitable for use as a shut-off and connection mechanism, as well as for flow diversion. Depending on the application and the erosion resistance of the sealing surfaces, they can sometimes be used for throttling.

[0003] A plug valve is a quick-opening straight-through valve with a scraping effect when the sealing surfaces move together. When fully open, it completely prevents contact with the flowing medium, so it is often used for media containing suspended particles. Another important feature is that it is easy to adapt to multi-channel structures. One valve can provide two, three, or even four different flow channels, which simplifies the design of the piping system, reduces the number of valves used, and reduces some of the connecting fittings required in the equipment.

[0004] Ordinary plug valves are generally soft-seal or spring-loaded hard-seal structures, which can only be adapted to normal working conditions. When dealing with high-temperature, high-pressure, and high-viscosity media, ordinary plug valves need to be significantly modified to adapt. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-pressure lifting plug valve.

[0006] This utility model discloses a high-pressure lifting plug valve. The valve body has a three-way structure with an inlet at the bottom and outlets on both sides. A bushing is located at the center of the valve body, inside which is a plug. Multiple rings of packing are placed between the plug and the bushing and are compressed by a pressure sleeve. A blowout prevention plate, fixed by a No. 2 screw, is located above the valve body. The blowout prevention plate has a split design; the nut compresses the packing through the pressure sleeve and is fixed by a lock nut. The valve stem is located above the plug. The upper part of the transition plate connects to a bevel gear reducer, and the lower part of the transition plate connects to the valve body via a support plate and a support sleeve, preventing rotation. The plate is installed between the transition plate and the support plate and is fastened to the support plate with bolts. The valve stem sleeve is set inside the bevel gear reducer and is engaged with a T-shaped thread. The lower part of the valve stem sleeve has four anti-rotation blocks, which are connected to the valve stem sleeve with screws. The lower part of the valve stem sleeve has a bearing, and below the bearing is a correction washer. Below the correction washer is a thrust block. The valve stem and the thrust block are threaded together and are secured with screws to prevent loosening. The upper part of the bevel gear reducer has a transition sleeve and a positioning plate. The rod of the limit mechanism is inserted into the hole of the positioning plate. The valve body has a three-way structure, with an inlet at the bottom of the valve body and valve stems on the left and right sides respectively. At the outlet, a bushing is located at the center of the valve body. Inside the bushing is a stopcock. Multiple rings of packing are placed between the stopcock and the bushing and are tightened by a pressure sleeve. A blow-out preventer plate, secured by a No. 2 screw, is located above the valve body. This blow-out preventer plate has a split design; the nut tightens the packing via the pressure sleeve and is secured by a lock nut. The valve stem is positioned above the stopcock. The upper part of a transition plate connects to the bevel gear reducer, and the lower part of the transition plate connects to the valve body via a support plate and a support sleeve. An anti-rotation plate is installed between the transition plate and the support plate and is bolted to the support plate. The valve stem sleeve is located inside the bevel gear reducer and... The valve stem sleeve has four anti-rotation blocks at the bottom, connected to the valve stem sleeve by screws. A bearing is located at the bottom of the valve stem sleeve to reduce friction. Below the bearing is a correction washer to correct accumulated errors and prevent jamming. Below the correction washer is a thrust block, which transmits the downward operating force of the valve stem sleeve to the valve stem. The valve stem and thrust block are threaded together and secured with screws to prevent loosening. The upper part of the bevel gear reducer has a transition sleeve and a positioning plate. The rod of the limiting mechanism is inserted into the hole in the positioning plate. When the load on the valve stem is removed, the limiting mechanism is released. Operating the limiting mechanism allows the valve stem to rotate, thus rotating the stopcock.

[0007] Preferably, half of the anti-rotation block is installed in the groove of the valve stem threaded sleeve and fixed with screws, and the other half is stuck in the groove of the anti-rotation plate; the arrangement of the anti-rotation block improves the friction service life.

[0008] Preferably, the valve body is a forged and welded structure. The upper part of the main valve body is welded with an upper flange, and the lower part is welded with a second flange. The left and right sides are connected to the first flange and the third flange respectively through the side valve body. The main valve body is provided with an upper sleeve, the lower part of the upper sleeve is provided with an oblique sleeve, the left and right sides are provided with small sleeves, and the back is provided with a temperature measuring tube.

[0009] Preferably, the top of the bushing is welded to the valve body; welding the top of the bushing to the valve body improves the connection sealing.

[0010] Preferably, the pressure sleeve has a split structure and is connected by a No. 1 screw.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The valve body has a three-way structure, with an inlet at the bottom and outlets on the left and right sides. A bushing is located at the center of the valve body, and a stopcock is located inside the bushing. Multiple rings of packing are placed between the stopcock and the bushing and are compressed by a pressure sleeve. An anti-blowout plate, fixed by a No. 2 screw, is located above the valve body. The anti-blowout plate has a split design; the nut compresses the packing through the pressure sleeve and is fixed by a lock nut. The valve stem is located above the stopcock. The upper part of the transition plate is connected to the bevel gear reducer, and the lower part of the transition plate is connected to the valve body via a support plate and a support sleeve. An anti-rotation plate is installed between the transition plate and the support plate and is tightened by bolts. Fixed to the support plate, the valve stem sleeve is located inside the bevel gear reducer and is engaged by a T-shaped thread. Four anti-rotation blocks are located at the lower part of the valve stem sleeve and are connected to it by screws. A bearing is located at the lower part of the valve stem sleeve to reduce friction. Below the bearing is a correction washer to correct accumulated errors and prevent jamming. Below the correction washer is a thrust block, which transmits the downward operating force of the valve stem sleeve to the valve stem. The valve stem and the thrust block are threaded together and secured with screws to prevent loosening. The upper part of the bevel gear reducer has a transition sleeve and a positioning plate. The rod of the limiting mechanism is inserted into the hole in the positioning plate. When the load on the valve stem is unloaded, the limiting mechanism is released. Operating the limiting mechanism allows the valve stem to rotate, thus rotating the stopcock. Attached Figure Description

[0012] Figure 1 This is a structural diagram of a high-pressure lift-type plug valve;

[0013] Figure 2 This is an isometric view of the high-pressure lift plug valve.

[0014] Figure 3 This is a structural diagram of the valve body assembly of a high-pressure lift plug valve;

[0015] Figure 4 This is an isometric view of the valve body assembly of a high-pressure lift plug valve.

[0016] The following components are labeled in the attached diagram: 1. Valve body; 2. Plug; 3. Packing; 4. Bushing; 5. Pressure sleeve; 6. No. 1 screw; 7. Anti-blowout plate; 8. No. 2 screw; 9. Nut; 10. Locking nut; 11. Valve stem; 12. Thrust block; 13. Support sleeve; 14. Correction shim; 15. Bearing; 16. Support plate; 17. Anti-rotation block; 18. Anti-rotation plate; 19. Transition plate; 20. Valve stem threaded sleeve; 21. Bevel gear reducer; 22. Transition sleeve; 23. Positioning plate; 24. Limiting mechanism; 25. Cross handle; 26. Flange 1; 27. Small sleeve; 28. Flange 2; 29. ​​Temperature measuring tube; 30. Upper flange; 31. Main valve body; 32. Inclined sleeve; 33. Upper sleeve; 34. Side valve body; 35. Flange 3; 36. Sleeve flange 1; 37. Sleeve flange 2; 38. Sleeve flange 3. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0018] like Figures 1 to 4 As shown, the high-pressure lifting plug valve of this utility model has a three-way valve body 1. An inlet is located at the bottom of the valve body 1, and outlets are located on the left and right sides of the valve body 1. A bushing 4 is located at the center of the valve body 1, and a plug 2 is located inside the bushing 4. Multiple rings of packing 3 are placed between the plug 2 and the bushing 4 and are compressed by a pressure sleeve 5. A blowout prevention plate 7, fixed by a No. 2 screw 8, is located above the valve body 1. The blowout prevention plate 7 is a split design. A nut 9 can compress the packing 3 through the pressure sleeve 5 and is fixed by a locking nut 10. The valve stem 11 is located above the plug 2. The upper part of a transition plate 19 is connected to a bevel gear reducer 21, and the lower part of the transition plate 19 is connected to the valve body 1 through a support plate 16 and a support sleeve 13. The anti-rotation plate 18 is installed between the transition plate 19 and the support plate 16 and is fastened to the support plate 16 by bolts. The valve stem sleeve 20 is set inside the bevel gear reducer 21 and is engaged by a T-shaped thread. The lower part of the valve stem sleeve 20 is provided with four anti-rotation blocks 17, which are connected to the valve stem sleeve 20 by screws. The lower part of the valve stem sleeve 20 is provided with a bearing 15, and the lower part of the bearing 15 is provided with a correction pad 14. The lower part of the correction pad 14 is a thrust block 12. The valve stem 11 and the thrust block 12 are threadedly connected and are provided with screws to prevent loosening. The upper part of the bevel gear reducer 21 is provided with a transition sleeve 22 and a positioning plate 23. The rod of the limiting mechanism 24 is inserted into the hole of the positioning plate 23.

[0019] The anti-rotation block 17 is half installed in the groove of the valve stem sleeve 20 and fixed with screws, and half is stuck in the groove of the anti-rotation plate 18;

[0020] The valve body is a forged and welded structure. The upper part of the main valve body 31 is welded with an upper flange 30, and the lower part is welded with a second flange 28. The left and right sides are connected to the first flange 26 and the third flange 35 respectively through the side valve body 34. The main valve body 31 is provided with an upper sleeve 33. The lower part of the upper sleeve 33 is provided with an oblique sleeve 32. Small sleeves 27 are provided on the left and right sides. A temperature measuring tube 29 is provided on the back.

[0021] The top of bushing 4 is welded to valve body 1;

[0022] The pressure sleeve 5 is a split structure and is fixed by screw 6.

[0023] In this embodiment, the valve body 1 has a three-way structure. An inlet is located at the bottom of the valve body 1, and outlets are located on the left and right sides of the valve body 1. A bushing 4 is located at the center of the valve body 1, and a stopcock 2 is located inside the bushing 4. Multiple rings of packing 3 are placed between the stopcock 2 and the bushing 4 and are compressed by a pressure sleeve 5. A blowout prevention plate 7, fixed by a No. 2 screw 8, is located above the valve body 1. The blowout prevention plate 7 has a split design. A nut 9 can compress the packing 3 through the pressure sleeve 5 and is fixed by a locking nut 10. The valve stem 11 is located above the stopcock 2. The upper part of the transition plate 19 is connected to the bevel gear reducer 21, and the lower part of the transition plate 19 is connected to the valve body 1 through a support plate 16 and a support sleeve 13. An anti-rotation plate 18 is installed between the transition plate 19 and the support plate 16 and is fastened to the support plate 16 with bolts. The valve stem threaded sleeve 20 is located inside the bevel gear reducer 21 and is connected by… The valve stem sleeve 20 has a T-shaped thread fit and four anti-rotation blocks 17 at its lower part, which are connected to the valve stem sleeve 20 by screws. The valve stem sleeve 20 has a bearing 15 at its lower part to reduce friction. Below the bearing 15 is a correction pad 14 to correct accumulated errors and prevent jamming. Below the correction pad 14 is a thrust block 12, which transmits the downward operating force of the valve stem sleeve 20 to the valve stem 11. The valve stem 11 and the thrust block 12 are threaded together and are equipped with screws to prevent loosening. The upper part of the bevel gear reducer 21 has a transition sleeve 22 and a positioning plate 23. The rod of the limiting mechanism 24 is inserted into the hole of the positioning plate 23. When the load on the valve stem 11 is unloaded, the limiting mechanism 24 is released. By operating the limiting mechanism 24, the valve stem 11 can be rotated, which will drive the plug 2 to rotate. The arrangement of the anti-rotation blocks 17 improves the service life of friction. The top of the bushing 4 is welded to the valve body 1 to improve the connection sealing.

[0024] The high-pressure lift-type plug valve of this utility model comprises a pipe sleeve assembly consisting of a slanted sleeve 32, an upper sleeve 33, and a small sleeve 27. The pipe sleeve assembly is externally provided with a first sleeve flange 36, a second sleeve flange 37, and a third sleeve flange 38 for introducing hot water and insulating the valve. The valve body 1 of the high-pressure lift-type plug valve of this utility model is commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-pressure rising plug valve, the valve body (1) is a three-way structure, the bottom of the valve body (1) is provided with an inlet, and the left and right sides of the valve body (1) are respectively provided with outlets, characterized in that, The center of the valve body (1) is provided with a bushing (4), the inside of the bushing (4) is provided with a plug (2), a plurality of packing (3) is arranged between the plug (2) and the bushing (4) and is compressed by a compression sleeve (5), the upper part of the valve body (1) is provided with a blowout prevention plate (7) fixed by a No. 8 screw (8), the blowout prevention plate (7) is designed as a split, a nut (9) can compress the packing (3) by the compression sleeve (5) and is fixed by a locking nut (10), a valve stem (11) is arranged above the plug (2), a transition plate (19) is connected with a bevel gear reducer (21) at the upper part, the lower part of the transition plate (19) is connected with the valve body (1) through a support plate (16) and a support sleeve (13), an anti-rotation plate (18) is installed between the transition plate (19) and the support plate (16) and is fastened on the support plate (16) by bolts, a valve stem sleeve (20) is arranged inside the bevel gear reducer (21) and is connected by a T-shaped thread, the lower part of the valve stem sleeve (20) is provided with four anti-rotation blocks (17) and is connected with the valve stem sleeve (20) by screws, the lower part of the valve stem sleeve (20) is provided with a bearing (15), the lower part of the bearing (15) is provided with a correction pad (14), the lower part of the correction pad (14) is a thrust block (12), the valve stem (11) is threadedly connected with the thrust block (12) and is provided with a screw anti-loosening device, the upper part of the bevel gear reducer (21) is provided with a transition sleeve (22) and a positioning plate (23), a rod of a limiting mechanism (24) is inserted into a hole of the positioning plate (23).

2. The high pressure pop-up faucet valve of claim 1, wherein, The anti-rotation blocks (17) are half installed in the groove of the valve stem sleeve (20) and are fixed by screws, and the other half is clamped in the groove of the anti-rotation plate (18).

3. The high pressure pop-up faucet valve of claim 2, wherein, The valve body is a forge-weld structure, the upper part of a main valve body (31) is welded with an upper flange (30), the lower part is welded with a flange two (28), the left and right sides are connected with a flange one (26) and a flange three (35) through side valve bodies (34) respectively, the outside of the main valve body (31) is provided with an upper sleeve (33), the lower part of the upper sleeve (33) is provided with an inclined sleeve (32), the left and right sides are provided with small sleeves (27), and the back is provided with a temperature measuring pipe (29).

4. The high pressure pop-up plug valve as claimed in claim 1, wherein, The top of the bushing (4) is welded with the valve body (1).

5. The high pressure pop-up faucet valve of claim 1, wherein, The compression sleeve (5) is a split structure and is connected by a No. 1 screw (6).

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