Petrochemical engineering valve with multiple connectors

Abstract

The utility model discloses a petrochemical engineering valve with a plurality of joints, which comprises a valve body and a liquid inlet joint arranged at the left end of the valve body, a liquid outlet joint A is arranged at the bottom of the valve body, and a liquid outlet joint B is arranged at the right end of the valve body. The inside of the disassembly-free self-sealing device is in an open state when the disassembly-free self-sealing device is in a normal state, in this way, it can be guaranteed that petrochemical raw materials normally enter the valve body through the disassembly-free sealing device and the liquid inlet connector, and when the petrochemical valve is damaged and needs to be disassembled, maintained or replaced, the oil supply pipeline main valve does not need to be closed at the moment; when the petrochemical engineering valve needs to be dismounted, the dismounting-free sealing device is only required to be in a sealed state, so that petrochemical engineering raw materials can be prevented from entering the petrochemical engineering valve, and the petrochemical engineering valve can be directly dismounted for maintenance and replacement.

Description

Technical Field

[0001] The utility model belongs to the technical field related to valves, and in particular relates to a petrochemical valve with multiple joints. Background Art

[0002] Petrochemical valves typically feature multiple connections to accommodate complex process pipeline connections. These connections can be flanged, threaded, or welded, and are designed to ensure the valve's efficient connection and operation within the pipeline system. Three-way valves are a common petrochemical valve, featuring multiple connections to accommodate flow diversion, merging, or flow regulation within the pipeline system. Regardless of the connection method, three-way valves can flexibly divert, merge, or regulate flow according to the needs of the pipeline system, ensuring normal operation and control of the pipeline system.

[0003] However, petrochemical valves with multiple joints are mainly used to connect pipelines for transporting and outputting petrochemical raw materials, so it is necessary to ensure that the petrochemical raw materials can pass through the valve normally and be transported out. However, because the valve is used in the petrochemical industry, it is subject to severe corrosion. After the valve has been used for a period of time, it is easy to be damaged, causing the internal valve core to loosen, etc. Therefore, the valve needs to be disassembled and repaired or replaced regularly. However, when disassembling the valve, it is also necessary to separately cut off the main valve of the petrochemical supply pipeline. In this way, the steps of disassembling and repairing the petrochemical valve are relatively cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a petrochemical valve with multiple joints to solve the problem proposed in the above-mentioned background art that the valve is easily damaged after being used for a period of time, causing the internal valve core to loosen, so the valve needs to be disassembled and repaired or replaced regularly. However, when disassembling the valve, it is also necessary to separately cut off the main valve of the petrochemical supply pipeline, so the steps for disassembling and repairing the petrochemical valve are relatively cumbersome.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a petrochemical valve with multiple joints, comprising a valve body and a liquid inlet joint provided at the left end of the valve body, a liquid outlet joint A provided at the bottom of the valve body, and a liquid outlet joint B provided at the right end of the valve body, wherein the liquid inlet joint, liquid outlet joint A, and liquid outlet joint B are all in communication with the interior of the valve body, a valve seat is provided at the top of the valve body, and a disassembly-free sealing device is provided at the left end of the liquid inlet joint;

[0006] The disassembly-free sealing device includes an external flange, a square self-sealing tube, a fixed flange, a metal sealing strip, a rubber sealing strip and a plug-in slot. The left and right ends of the square self-sealing tube are respectively welded with an external flange and a fixed flange. The fixed flange is fixedly connected to the flange at the left end of the liquid inlet joint by multiple screws. A plug-in slot is provided inside the top of the square self-sealing tube, a metal sealing strip is provided outside the top of the plug-in slot, and a rubber sealing strip is provided at the bottom end of the metal sealing strip. The outer wall of the bottom end of the rubber sealing strip can be fully fitted with the outer wall of the top end of the square self-sealing tube.

[0007] Preferably, the disassembly-free closing device also includes a vertical closing plate and a horizontal closing plate. The vertical closing plate is welded to the bottom end of the metal sealing strip, and the vertical closing plate is inserted into the plug-in slot. The vertical closing plate can move up and down in the plug-in slot, and a horizontal closing plate is provided at the bottom end of the vertical closing plate.

[0008] Preferably, the lengths of the horizontal closing plate and the vertical closing plate are equal, the longitudinal thickness of the horizontal closing plate is greater than the longitudinal thickness of the vertical closing plate, the top outer wall of the horizontal closing plate can be completely fitted with the top inner wall of the square self-sealing tube, and the left and right outer walls of the vertical closing plate and the left and right inner walls of the plug-in slot are interference fit.

[0009] Preferably, the disassembly-free sealing device also includes a knob stopper, an internally threaded lifting cylinder, an adjusting screw, a movable ring and a limiting stopper ring. Two internally threaded lifting cylinders are provided, and the two internally threaded lifting cylinders are respectively welded on the outer walls at the front and rear ends of the bottom of the cubic self-sealing cylinder. Adjusting screws are threadedly inserted in the two internally threaded lifting cylinders, and the top ends of the two adjusting screws pass through metal sealing strips. A knob stopper is provided at the bottom end of the adjusting screw, and the knob stopper is located outside the bottom end of the internally threaded lifting cylinder.

[0010] Preferably, a movable ring is provided on the outer side of the lower side at the center of the adjusting screw, and the movable ring is attached to the outer wall of the top end of the internal thread lifting cylinder. Two limiting rings are provided on the outer side of the top end of the adjusting screw, and the two limiting rings are respectively attached to the outer wall of the top end of the metal sealing strip and the outer wall of the bottom end of the rubber sealing strip.

[0011] Preferably, a sealing seat is provided at the top of the valve seat, a valve stem is threadedly inserted in the sealing seat, a valve core is provided inside the valve body, the bottom end of the valve stem is rotatably connected to the valve core, and a valve handwheel is provided at the top of the valve stem.

[0012] Compared with the prior art, the present invention provides a petrochemical valve with multiple joints, which has the following beneficial effects:

[0013] The utility model adds a novel disassembly-free sealing device to the liquid inlet joint of the petrochemical valve, and the liquid inlet joint is connected to the external oil supply pipeline through the disassembly-free sealing device. The internal part of the disassembly-free self-sealing device is in an open state under normal conditions, thereby ensuring that petrochemical raw materials can normally enter the valve body through the disassembly-free sealing device and the liquid inlet joint. When the petrochemical valve is damaged and needs to be disassembled for maintenance or replacement, there is no need to close the main valve of the oil supply pipeline. It is only necessary to use the disassembly-free sealing device so that the disassembly-free sealing device is in a sealed state, thereby preventing petrochemical raw materials from entering the petrochemical valve, so that the petrochemical valve can be directly disassembled for maintenance and replacement. After the maintenance and replacement is completed, it is only necessary to reinstall the petrochemical valve on the disassembly-free sealing device, and then reopen the disassembly-free sealing device to ensure that the petrochemical raw materials can normally enter the petrochemical valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the external planar structure of a petrochemical valve with multiple joints according to the utility model.

[0015] Figure 2 This is a schematic diagram of the internal planar structure of a petrochemical valve with multiple joints according to the utility model.

[0016] Figure 3 It is a schematic side plan view of the structure of the disassembly-free sealing device of the present invention.

[0017] Figure 4 This is a schematic diagram of the front planar structure of the disassembly-free sealing device of the present invention.

[0018] Figure 5 It is a schematic side plan view of the vertical closing plate and the horizontal closing plate of the utility model.

[0019] In the figure: 1. Disassembly-free closing device; 2. Liquid inlet connector; 3. Liquid outlet connector A; 4. Valve body; 5. Liquid outlet connector B; 6. Valve handwheel; 7. Valve stem; 8. Sealing seat; 9. Valve seat; 10. Valve core; 11. External flange; 12. Knob stopper; 13. Internal thread lifting cylinder; 14. Adjusting screw; 15. Square self-sealing cylinder; 16. Fixed flange; 17. Movable ring; 18. Limiting retaining ring; 19. Metal sealing strip; 20. Rubber sealing strip; 21. Insertion slot; 22. Vertical closing plate; 23. Horizontal closing plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides Figure 1-5 A petrochemical valve with multiple joints shown in FIG. 1 includes a valve body 4 and a liquid inlet joint 2 arranged at the left end of the valve body 4, a liquid outlet joint A3 arranged at the bottom of the valve body 4, and a liquid outlet joint B5 arranged at the right end of the valve body 4. The liquid inlet joint 2, the liquid outlet joint A3 and the liquid outlet joint B5 are all connected to the interior of the valve body 4. A valve seat 9 is provided on the top of the valve body 4, and a sealing seat 8 is provided on the top of the valve seat 9. A valve stem 7 is threadedly inserted into the sealing seat 8. A valve core 10 is provided inside the valve body 4, and the bottom end of the valve stem 7 is rotatably connected to the valve core 10. A valve handwheel 6 is provided on the top of the valve stem 7. When installing and using the petrochemical valve with multiple joints, it is first necessary to connect the liquid inlet joint 2 of the petrochemical valve with multiple joints to the external petrochemical raw material supply pipeline through flanges and screws, so that the external petrochemical raw material pipeline can normally transport the petrochemical raw materials to the valve body 4, and then It is necessary to connect the liquid outlet joint A3 at the bottom of the valve body 4 and the liquid outlet joint B5 at the right end to the external liquid outlet pipe through flanges and screws, and then the petrochemical valve with multiple joints can be used normally. When the petrochemical valve needs to be opened, it is only necessary to rotate the valve stem 7 through the valve handwheel 6. The valve stem 7 will drive the valve core 10 up and down through the pushing action of the thread. When the valve core 10 moves downward, it will slowly close the channels of the liquid outlet joint A3 and the liquid outlet joint B5 until the two liquid outlet joint channels are blocked by the valve core 10, which will put the valve in a closed state. When the valve core 10 moves upward, it will slowly expose the two blocked liquid outlet channels, so that the channel of the liquid inlet joint 2 is connected with the channels of the two liquid outlet joints. In this way, the valve can be opened, so that the petrochemical raw materials can be discharged normally through the liquid outlet joint A3 and the liquid outlet joint B5.

[0022] like Figure 1 、 Figure 3 、 Figure 4 and Figure 5As shown, the left end of the liquid inlet joint 2 is provided with a disassembly-free sealing device 1, which includes an external flange 11, a square self-sealing cylinder 15, a fixed flange 16, a metal sealing strip 19, a rubber sealing strip 20 and a plug-in slot 21. The left and right ends of the square self-sealing cylinder 15 are respectively welded with an external flange 11 and a fixed flange 16. The fixed flange 16 is fixedly connected to the flange at the left end of the liquid inlet joint 2 by a plurality of screws. A plug-in slot 21 is provided inside the top of the square self-sealing cylinder 15. The top of the plug-in slot 21 is provided outside. A metal sealing strip 19 is provided at the top, and a rubber sealing strip 20 is provided at the bottom end of the metal sealing strip 19. The outer wall of the bottom end of the rubber sealing strip 20 can be completely fitted with the outer wall of the top end of the cubic self-sealing tube 15. The disassembly-free sealing device 1 also includes a vertical sealing plate 22 and a horizontal sealing plate 23. The vertical sealing plate 22 is welded to the bottom end of the metal sealing strip 19, and the vertical sealing plate 22 is inserted into the plug-in slot 21. The vertical sealing plate 22 can move up and down in the plug-in slot 21, and a horizontal sealing plate 23 is provided at the bottom end of the vertical sealing plate 22.

[0023] like Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, the length of the horizontal sealing plate 23 is equal to that of the vertical sealing plate 22, and the longitudinal thickness of the horizontal sealing plate 23 is greater than that of the vertical sealing plate 22. The outer wall of the top of the horizontal sealing plate 23 can be completely fitted with the inner wall of the top of the square self-sealing tube 15, and the outer walls of the left and right ends of the vertical sealing plate 22 and the inner walls of the left and right ends of the plug-in slot 21 are interference fit. The sealing principle of the non-disassembly sealing device 1 is as follows. When the non-disassembly sealing device 1 is used normally, the interior of the square sealing tube is in an unobstructed state, ensuring that the petrochemical raw materials can normally pass through the square sealing tube into the liquid inlet joint 2 and finally be transported out through the valve. At this time, the top of the horizontal sealing plate 23 is pressed tightly against the inner wall of the top of the square sealing tube, which will make the horizontal sealing plate 23 Firmly close the plug-in slot 21 to prevent petrochemical raw materials from leaking out through the plug-in slot 21. At this time, the interior of the cubic sealing cylinder is in an open state, ensuring that petrochemical raw materials can pass through normally. When the valve is damaged and needs to be disassembled and repaired, it is only necessary to close the disassembly-free sealing device 1 to prevent petrochemical raw materials from entering the valve through the cubic sealing cylinder, so that the valve can be directly disassembled and replaced. At this time, the vertical sealing plate 22 is completely lowered, so that the vertical sealing plate 22 and the horizontal sealing plate 23 are completely blocked in the cubic sealing cylinder and produce a blocking effect in the cubic sealing cylinder, thereby preventing petrochemical raw materials from entering the valve through the cubic sealing cylinder, thereby achieving the purpose of disassembly-free replacement.

[0024] like Figure 1 、 Figure 3 、 Figure 4 and Figure 5The cam 17 is actuated by a spring 18 which is adapted to engage the cam 19 and to engage the cam 19. The cam 17 is actuated by a spring 19 which is adapted to engage the cam 19 and to engage the cam 19. The cam 17 is actuated by a spring 18 which is adapted to engage the cam 19 and to engage the cam 19. When the lever 14 is fully lowered and the bottom end of the horizontal sealing plate 23 is attached to the inner wall of the bottom end of the lifting cylinder 13, the lifting cylinder 13 will be completely blocked, thereby preventing the liquid from passing through the lifting cylinder 13, thereby achieving flexible control of the opening and closing state of the lifting cylinder 13.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A petrochemical valve with multiple joints, comprising a valve body (4) and a liquid inlet joint (2) arranged at the left end of the valve body (4), a liquid outlet joint A (3) arranged at the bottom of the valve body (4), and a liquid outlet joint B (5) arranged at the right end of the valve body (4), wherein the liquid inlet joint (2), the liquid outlet joint A (3) and the liquid outlet joint B (5) are all communicated with the interior of the valve body (4), and a valve seat (9) is arranged at the top of the valve body (4), characterized in that: The left end of the liquid inlet joint (2) is provided with a disassembly-free sealing device (1); The disassembly-free sealing device (1) comprises an external flange (11), a square self-sealing tube (15), a fixed flange (16), a metal sealing strip (19), a rubber sealing strip (20) and a plug-in slot (21). The left and right ends of the square self-sealing tube (15) are respectively welded with an external flange (11) and a fixed flange (16). The fixed flange (16) is fixedly connected to the flange at the left end of the liquid inlet joint (2) by a plurality of screws. The top of the square self-sealing tube (15) is provided with a plug-in slot (21). The top of the plug-in slot (21) is provided with a metal sealing strip (19). The bottom of the metal sealing strip (19) is provided with a rubber sealing strip (20). The outer wall of the bottom end of the rubber sealing strip (20) can be completely fitted with the outer wall of the top end of the square self-sealing tube (15).

2. A petrochemical valve with multiple joints according to claim 1, characterized in that: The disassembly-free sealing device (1) further comprises a vertical sealing plate (22) and a horizontal sealing plate (23), wherein the vertical sealing plate (22) is welded to the bottom end of the metal sealing strip (19), and the vertical sealing plate (22) is plugged into the plug-in slot (21), and the vertical sealing plate (22) can move up and down in the plug-in slot (21), and the bottom end of the vertical sealing plate (22) is provided with a horizontal sealing plate (23).

3. The petrochemical valve with multiple joints according to claim 2, characterized in that: The horizontal closing plate (23) and the vertical closing plate (22) are of equal length, the longitudinal thickness of the horizontal closing plate (23) is greater than the longitudinal thickness of the vertical closing plate (22), the top outer wall of the horizontal closing plate (23) can be completely fitted with the top inner wall of the square self-sealing tube (15), and the left and right outer walls of the vertical closing plate (22) and the left and right inner walls of the insertion slot (21) are both interference fit.

4. A petrochemical valve with multiple joints according to claim 3, characterized in that: The disassembly-free sealing device (1) further comprises a knob stopper (12), an internally threaded lifting cylinder (13), an adjusting screw (14), a movable ring (17) and a limiting stopper ring (18). Two internally threaded lifting cylinders (13) are provided, and the two internally threaded lifting cylinders (13) are respectively welded to the outer walls at the front and rear ends of the bottom of the cubic self-sealing cylinder (15). The adjusting screws (14) are threadedly inserted into the two internally threaded lifting cylinders (13), and the top ends of the two adjusting screws (14) pass through the metal sealing strip (19). The bottom end of the adjusting screw (14) is provided with a knob stopper (12), and the knob stopper (12) is located outside the bottom end of the internally threaded lifting cylinder (13).

5. The petrochemical valve with multiple joints according to claim 4, characterized in that: A movable ring (17) is provided on the outer side of the lower side of the center of the adjusting screw (14), and the movable ring (17) is attached to the outer wall of the top end of the internal thread lifting cylinder (13). Two limiting rings (18) are provided on the outer side of the top end of the adjusting screw (14), and the two limiting rings (18) are attached to the outer wall of the top end of the metal sealing strip (19) and the outer wall of the bottom end of the rubber sealing strip (20) respectively.

6. The petrochemical valve with multiple joints according to claim 1, characterized in that: A sealing seat (8) is provided at the top of the valve seat (9), a valve stem (7) is threadedly inserted into the sealing seat (8), a valve core (10) is provided inside the valve body (4), the bottom end of the valve stem (7) is rotatably connected to the valve core (10), and a valve handwheel (6) is provided at the top of the valve stem (7).

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