A flat valve assembly for a petroleum transfer pipeline and method of use

Abstract

The present application relates to the technical field of oil transmission, in particular to a kind of oil transmission pipeline flat valve assembly and its using method, including one valve body, the side wall of one valve body two sides is respectively connected with one oil guide pipe, the outer side wall of two one oil guide pipe is respectively provided with one thread groove and straight slot, the end of two one oil guide pipe away from one valve body is respectively movably connected with two oil guide pipes, the outer side wall of the end of two oil guide pipes away from one oil guide pipe is provided with helical thread.The present application is combined between two two valve bodies and one valve body, two two valve bodies are idle in daily use, the frequency of use of two two valve bodies is reduced, and the service life of two two valve bodies is improved, when one valve body is frequently operated, the failure rate of one valve body is higher than that of two two valve bodies, when one valve body is damaged, two two valve bodies are closed, the transmission of oil is blocked, then one valve body is disassembled and installed by rotating fixed sleeve and using fixed assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to a flat valve assembly, in particular to a flat valve assembly of an oil transmission pipeline and a method for using the same, and belongs to the technical field of oil transmission. BACKGROUND

[0002] An oil transmission pipeline is composed of oil pipes and accessories, and is equipped with corresponding oil pump units according to the needs of the process flow, is designed and installed into a complete pipeline system, and is used to complete the tasks of oil loading and unloading and oil transmission. The pipe material of the oil transmission pipeline is generally steel pipe, which is connected into a long-distance pipeline by using welding and flange connecting devices, and is opened and closed controlled and flow regulated by using valves. The oil transmission pipeline mainly has isothermal conveying, heating conveying and sequential conveying conveying processes. The oil transmission pipeline has become one of the main oil conveying tools, and still has considerable development potential in the future.

[0003] In the oil transmission pipeline, the flat valve plays a crucial role in connecting and controlling the flow between the pipelines. Influenced by factors such as weather or use time, the flat valve can also be damaged. If the flat valve is frequently used to control the flow of oil in the pipeline, the impact force of the oil and the friction between the valve body and the gate plate in the flat valve itself will accelerate the reduction of the service life of the flat valve. At this time, if the flat valve needs to be repaired or replaced, the flat valves at both ends of the pipeline connected to the flat valve to be repaired need to be closed to ensure that the oil does not flow, so as to ensure that the repair or replacement of the damaged flat valve will not be affected. However, when the flat valves at both ends of the pipeline are closed, oil will remain in the pipeline between the damaged flat valve and the closed flat valve. After the damaged flat valve is removed, the oil will flow out of the pipeline. If the oil is collected, the process will be more complicated, and if it is discarded, it will cause waste of resources. Therefore, the treatment of the oil flowing out during the repair or replacement of the damaged flat valve will be more complicated, and the process of replacing the flat valve will also be more complicated.

[0004] Therefore, it is urgent to improve the flat valve assembly of the oil transmission pipeline to solve the above problems. SUMMARY

[0005] The petroleum transmission pipeline flat valve assembly and the use method thereof can reduce the use frequency of the two second valve bodies by combining the two second valve bodies with the first valve body, operating the first valve body to control the petroleum flow in daily use, and leaving the two second valve bodies, thereby improving the service life of the two second valve bodies.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present application comprises: a petroleum transmission pipeline flat valve assembly, comprising a first valve body, the two side walls of the first valve body are respectively connected with a first oil guide pipe, a first threaded groove and a straight groove are formed in the outer side wall of the two first oil guide pipes, two second oil guide pipes are movably connected to the ends of the two first oil guide pipes away from the first valve body, a spiral thread is arranged on the outer side wall of the end of the second oil guide pipe away from the first oil guide pipe, a sealing ring block is arranged at the connection between the first oil guide pipe and the second oil guide pipe, two second valve bodies are respectively connected to the ends of the two second oil guide pipes away from the two first oil guide pipes, an oil inlet pipe and an oil outlet pipe are respectively connected to the side walls of the two second valve bodies away from the two second oil guide pipes, a fixing sleeve is arranged on the outer surface of the two first oil guide pipes, and the inner side wall of the fixing sleeve is movably connected with the outer side wall of the first oil guide pipe and the outer side wall of the second oil guide pipe, a sliding protrusion is fixedly connected to the inner side wall of the end of the fixing sleeve close to the first oil guide pipe, a second threaded groove is formed in the inner side wall of the end of the fixing sleeve close to the second oil guide pipe, and the second threaded groove is screwed with the spiral thread, and a fixing assembly for fixing the fixing sleeve is fixedly connected to the side wall of the two second valve bodies close to the first valve body.

[0007] Preferably, a fixing protrusion is arranged on the outer side wall of the end of the two fixing sleeves close to the two second oil guide pipes, the sliding protrusions are movably connected with the straight grooves and the first threaded grooves, and the first threaded grooves are connected with the straight grooves, and the first threaded grooves and the second threaded grooves have the same pitch.

[0008] Preferably, the fixing assembly includes a plurality of connecting rods, a rotating ring, a plurality of triangular plates, a plurality of sliding rods, and a plurality of arc-shaped clamping blocks. One end of each of the connecting rods is fixedly connected to the side wall of the second valve body near the first valve body, and the plurality of connecting rods are equidistantly arranged around the central axis of the second oil guide pipe. The other end of each of the connecting rods is slidably connected to the sliding rods. The outer walls of each of the arc-shaped clamping blocks are fixedly connected to one end of each of the sliding rods. The triangular plates are slidably connected to the other end of each of the sliding rods. One side wall of each of the triangular plates is fixedly connected to the inner wall of the rotating ring.

[0009] Preferably, a plurality of sliding rods, a plurality of arc-shaped clamping blocks, and a plurality of triangular plates are equidistantly arranged around the central axis of the second oil guide pipe. The plurality of arc-shaped clamping blocks are interlocked with each other, and the cylindrical inner sidewall formed when the plurality of arc-shaped clamping blocks are interlocked with each other is in contact with the outer sidewall of the second oil guide pipe and the outer sidewall of one end of the fixed sleeve.

[0010] Preferably, each of the two fixed sleeves has a plurality of concave fixing blocks on its outer side wall. The plurality of concave fixing blocks are equidistantly arranged around the central axis of the fixed sleeve, and each of the plurality of concave fixing blocks is hinged with a hand handle.

[0011] Preferably, a fixing frame is fixedly connected to one side wall of each of the two valve bodies, and a threaded rod is rotatably connected to the fixing frame. One end of the threaded rod passes through the fixing frame, extends to one side of the fixing frame, and is fixedly connected to a handle.

[0012] Preferably, each of the two rotating rings has a rotating block on its outer sidewall, and a rotating rod is rotatably connected to the sidewall of each of the two rotating blocks near the second valve body. A threaded block is rotatably connected to the end of the rotating rod away from the rotating block, and the threaded block is slidably connected to the threaded block. The threaded block is threadedly connected to the threaded rod.

[0013] Preferably, a second handle is rotatably connected to the first valve body, and a lead screw is threaded onto the second handle. The lead screw is located inside the first valve body, and a sealing column is fixedly connected to one end of the lead screw. A gate plate is fixedly connected to the end of the sealing column away from the lead screw.

[0014] Preferably, a baffle plate is fixedly connected to the upper surface of the gate plate, and an air valve is provided on one side wall of the first valve body. The air valve is located in the space above the baffle plate inside the first valve body. Each of the two second valve bodies is provided with a third handle, and the third handle and the first handle are located on opposite sides of the second valve body.

[0015] A method for using a flat valve assembly for an oil transmission pipeline includes the following steps:

[0016] S1: First, when you want to disassemble valve body No. 1, turn the two No. 3 handles respectively to close the oil inlet pipe and oil outlet pipe of the two No. 2 valve bodies respectively, thereby blocking the transmission of oil in the No. 1 oil guide pipe and the No. 2 oil guide pipe.

[0017] S2: Then, rotate the two No. 1 handles respectively to make the rotating ring rotate. Then, several sliding rods slide on several connecting rods under the drive of several triangular plates. This causes several arc-shaped clamping blocks to move away from the central axis of the rotating ring, so that the inner sidewalls of several arc-shaped clamping blocks are away from the outer sidewall of one end of the fixed sleeve and the outer sidewall of the No. 2 oil guide pipe, so that they no longer contact each other.

[0018] S3: Next, rotate several hand levers on the outer walls of the two fixed sleeves so that they are perpendicular to the central axis of the fixed sleeves. Manually rotate several hand levers to drive the fixed sleeves to rotate. When the fixed sleeves rotate, the No. 2 thread groove and the spiral thread will no longer be engaged. At the same time as the engagement ends, the sliding protrusion is located at the connection between the straight groove and the No. 1 thread groove. Pull the fixed sleeve straight towards the No. 1 valve body to completely detach it from the No. 2 oil guide tube.

[0019] S4: Finally, when both fixed sleeves are fully retracted, the No. 1 valve body can be removed from the top and bottom for subsequent maintenance and replacement.

[0020] This invention has at least the following beneficial effects:

[0021] 1. By combining two No. 2 valve bodies with No. 1 valve body, the No. 1 valve body is used to control oil flow during daily use, while the two No. 2 valve bodies remain idle. This reduces the frequency of use of the two No. 2 valve bodies and thus extends their service life. Frequent operation of the No. 1 valve body leads to a higher failure rate than the two No. 2 valve bodies. When the No. 1 valve body fails, the two No. 2 valve bodies are closed to block oil transmission. Then, the No. 1 valve body is disassembled and installed by rotating the fixed sleeve and using the fixed components. The disassembly and installation process is convenient, and in emergency situations, the device requires fewer tools, facilitating quick replacement of damaged valve bodies. Furthermore, the replacement of valve bodies minimizes oil loss in the pipeline, reducing resource waste.

[0022] 2. When the No. 2 handle is turned, the lead screw moves upward, which in turn moves the gate plate upward. As the lead screw moves upward, a sealing column is fixedly connected to it and slidably connected inside the pipe where the lead screw is located. The sealing column ensures the airtightness between the cavity where the gate plate is located and the cavity where the lead screw is rotatably connected. The baffle plate further ensures the airtightness of the space above and below the baffle plate in the No. 1 cavity. When the gate plate moves up and down, causing the baffle plate to move, the compressed and absorbed air inside is guided in and out through the air valve. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a three-dimensional structural schematic diagram provided for the present invention;

[0025] Figure 2 A cross-sectional view provided for this invention;

[0026] Figure 3 This is a schematic diagram of the fixed component structure provided by the present invention;

[0027] Figure 4 This is a partial structural schematic diagram provided by the present invention;

[0028] Figure 5 This is a partial exploded view of the structure provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of the fixed sleeve provided by the present invention.

[0030] In the diagram: 1. Valve body No. 1; 2. Oil guide pipe No. 1; 3. Threaded groove No. 1; 4. Straight groove; 5. Oil guide pipe No. 2; 6. Spiral pattern; 7. Sealing ring block; 8. Valve body No. 2; 9. Fixing assembly; 901. Connecting rod; 902. Rotating ring; 903. Triangular plate; 904. Sliding rod; 905. Arc-shaped clamping block; 10. Oil inlet pipe; 11. Oil outlet pipe; 12. Fixing sleeve; 13. Sliding protrusion; 14. Threaded groove No. 2; 15. Fixing protrusion; 16. Concave fixing block; 17. Hand handle; 18. Fixing bracket; 19. Threaded rod; 20. Handle No. 1; 21. Rotating block; 22. Rotating rod; 23. Threaded block; 24. Handle No. 2; 25. Lead screw; 26. Sealing column; 27. Gate plate; 28. Barrier plate; 29. ​​Air valve; 30. Handle No. 3. Detailed Implementation

[0031] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0032] like Figures 1-6 As shown, the flat valve assembly for oil transmission pipelines provided in this embodiment includes a first valve body 1. Two first oil guide pipes 2 are connected to the side walls of the first valve body 1. Each of the two first oil guide pipes 2 has a first threaded groove 3 and a straight groove 4 on its outer side wall. A second oil guide pipe 5 is movably connected to the end of each of the two first oil guide pipes 2 away from the first valve body 1. A spiral groove 6 is provided on the outer side wall of the end of the second oil guide pipe 5 away from the first oil guide pipe 2. A sealing ring 7 is provided at the connection between the first oil guide pipe 2 and the second oil guide pipe 5. A second valve body 8 is connected to the end of each of the two second oil guide pipes 5 away from the two first oil guide pipes 2. Two valve bodies 8, located away from the two oil guide pipes 5, are respectively connected to an inlet pipe 10 and an outlet pipe 11. Fixed sleeves 12 are fitted onto the outer surfaces of the two oil guide pipes 2, with the inner walls of the fixed sleeves 12 slidably connected to the outer walls of both the oil guide pipes 2 and 5. Several concave fixing blocks 16 are provided on the outer walls of both fixed sleeves 12, equidistantly arranged around the central axis of the fixed sleeves 12. Hand levers 17 are hinged to each of the concave fixing blocks 16. The inner wall of the fixed sleeve 12 closest to the oil guide pipe 2 is fixed... A sliding protrusion 13 is connected to the inner wall of the fixed sleeve 12 near the second oil guide pipe 5, and a second threaded groove 14 is opened, which is screwed into the spiral thread 6. Fixed protrusions 15 are respectively provided on the outer walls of the two fixed sleeves 12 near the two second oil guide pipes 5. The sliding protrusion 13 is slidably connected to the straight groove 4 and the first threaded groove 3, respectively, and the first threaded groove 3 is connected to the straight groove 4. The first threaded groove 3 and the second threaded groove 14 have the same pitch. The two second valve bodies 8 are fixedly connected to the side walls near the first valve body 1, respectively, to secure the fixed sleeve 12. The fixed component 9 is used to combine two No. 2 valve bodies 8 with No. 1 valve body 1. During daily use, No. 1 valve body 1 is used to control the oil flow, while the two No. 2 valve bodies 8 are idle, thereby reducing the frequency of use of the two No. 2 valve bodies 8 and thus increasing their service life. Frequent operation of No. 1 valve body 1 leads to a higher failure rate than the two No. 2 valve bodies 8. When No. 1 valve body 1 is damaged, the two No. 2 valve bodies 8 are closed to block the transmission of oil. Then, No. 1 valve body 1 is disassembled and installed by rotating the fixed sleeve 12 and using the fixed component 9.

[0033] Among them, such as Figures 1-6As shown, the fixing assembly 9 includes several connecting rods 901, a rotating ring 902, several triangular plates 903, several sliding rods 904, and several arc-shaped clamping blocks 905. One end of each connecting rod 901 is fixedly connected to the side wall of the second valve body 8 near the first valve body 1, and the connecting rods 901 are equidistantly arranged around the central axis of the second oil guide pipe 5. The other end of each connecting rod 901 is slidably connected to the sliding rods 904. The outer walls of the arc-shaped clamping blocks 905 are fixedly connected to the sliding rods 904. 4. At one end, several triangular plates 903 are slidably connected to the other end of several sliding rods 904. One side wall of each triangular plate 903 is fixedly connected to the inner wall of the rotating ring 902. Several sliding rods 904, several arc-shaped clamping blocks 905, and several triangular plates 903 are equidistantly arranged around the central axis of the second oil guide pipe 5. Several arc-shaped clamping blocks 905 are interlocked with each other, and the cylindrical inner wall formed by the interlocking of several arc-shaped clamping blocks 905 is connected to the outer wall of the second oil guide pipe 5 and the outer side of one end of the fixed sleeve 12. The two valve bodies 8 are in wall contact. A fixed bracket 18 is fixedly connected to one side wall of each valve body 8. A threaded rod 19 is rotatably connected to the fixed bracket 18. One end of the threaded rod 19 extends through the fixed bracket 18 to one side of the fixed bracket 18 and is fixedly connected to a handle 20. Rotating blocks 21 are provided on the outer walls of both rotating rings 902. Rotating rods 22 are rotatably connected to the side wall of each rotating block 21 closest to the valve body 8. A threaded block 23 is rotatably connected to the end of the rotating rod 22 away from the rotating block 21, and the rod slides vertically with the threaded block 23. This ensures that when the threaded block 23 moves back and forth, it can drive the rotating ring 902 to rotate clockwise and counterclockwise. The threaded block 23 is threadedly connected to the threaded rod 19. The sliding trajectory of the slide rod 904 in the triangular plate 903 is such that when the rotating ring 902 rotates in the direction of the first handle 20, several slide rods 904 will drive several arc-shaped clamping blocks 905 to move towards the central axis of the rotating ring 902. When the rotating ring 902 moves in the opposite direction, it will drive several arc-shaped clamping blocks 905 to move away from the central axis of the rotating ring 902.

[0034] Furthermore, such as Figures 1-6As shown, a second handle 24 is rotatably connected to valve body 1. A screw 25 is threaded onto handle 24, and screw 25 is located inside valve body 1. A sealing post 26 is fixedly connected to one end of screw 25, and a gate 27 is fixedly connected to the end of sealing post 26 away from screw 25. A baffle plate 28 is fixedly connected to the upper surface of gate plate 27. An air valve 29 is provided on one side wall of valve body 1, located inside valve body 1 above the baffle plate 28. Two second valve bodies 8 are each provided with a third handle 30, and the third handle 30 and the first handle 20 are located on opposite sides of the second valve body 8. When the second handle 24 is turned, the lead screw 25 moves upward, which in turn moves the gate 27 upward. When the lead screw 25 moves upward, a sealing column 26 is fixedly connected to it, and the sealing column 26 is slidably connected in the pipe where the lead screw 25 is located. The sealing column 26 ensures the airtightness between the cavity where the gate 27 is located and the cavity where the lead screw 25 is rotatably connected. The baffle plate 28 further ensures the airtightness of the upper and lower spaces in the first cavity, with the baffle plate 28 as the boundary. When the gate 27 moves up and down, causing the baffle plate 28 to move, the compressed and absorbed air inside is guided in and out through the air valve 29.

[0035] like Figures 1-6 As shown in the figure, the method of using a flat valve assembly for an oil transmission pipeline provided in this embodiment includes the following steps:

[0036] S1: First, when you want to disassemble valve body 1, turn the two handles 30 respectively so that the two valve bodies 8 close the oil inlet pipe 10 and the oil outlet pipe 11 respectively, thereby blocking the transmission of oil in the oil guide pipe 2 and the oil guide pipe 5.

[0037] S2: Then, rotate the two No. 1 handles 20 respectively, so that the rotating ring 902 rotates. Then, the several sliding rods 904 slide on the several connecting rods 901 under the drive of the several triangular plates 903, thereby driving the several arc-shaped clamping blocks 905 to move away from the central axis of the rotating ring 902, so that the inner sidewall of the several arc-shaped clamping blocks 905 moves away from the outer sidewall of one end of the fixed sleeve 12 and the outer sidewall of the No. 2 oil guide pipe 5, so that they no longer contact each other.

[0038] S3: Next, rotate several hand levers 17 on the outer side wall of the two fixed sleeves 12 so that they are perpendicular to the central axis of the fixed sleeves 12. Manually rotate several hand levers 17 to drive the fixed sleeves 12 to rotate. When the fixed sleeves 12 rotate, the second thread groove 14 and the spiral 6 will no longer be engaged. At the same time as the engagement ends, the sliding protrusion 13 is located at the connection between the straight groove 4 and the first thread groove 3, and pulls the fixed sleeve 12 in a straight line towards the first valve body 1, so that it is completely separated from the second oil guide tube 5.

[0039] S4: Finally, when both fixed sleeves 12 are fully retracted, the valve body 1 can be removed from the top and bottom for subsequent maintenance and replacement.

[0040] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0041] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0042] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A flat valve assembly for an oil transmission pipeline, comprising a valve body (1), characterized in that: The first valve body (1) has first oil guide pipes (2) connected to the two side walls of each side. The outer walls of the two first oil guide pipes (2) are provided with first threaded grooves (3) and straight grooves (4). The ends of the two first oil guide pipes (2) away from the first valve body (1) are respectively movably connected to second oil guide pipes (5). The outer wall of the end of the second oil guide pipe (5) away from the first oil guide pipe (2) is provided with spiral grooves (6). Sealing rings (7) are provided at the connection between the first oil guide pipe (2) and the second oil guide pipe (5). The ends of the two second oil guide pipes (5) away from the two first oil guide pipes (2) are respectively connected to second valve bodies (8). The side walls of the two second valve bodies (8) away from the two second oil guide pipes (5) are respectively connected to inlet pipes (10) and outlet pipes (11). Fixed sleeves (12) are respectively fitted on the outer surfaces of the two first oil guide pipes (2). The inner wall of the tube (12) is slidably connected to the outer wall of the first oil guide tube (2) and the outer wall of the second oil guide tube (5). The inner wall of the fixed sleeve (12) near the first oil guide tube (2) is fixedly connected to a sliding protrusion (13). The inner wall of the fixed sleeve (12) near the second oil guide tube (5) is provided with a second thread groove (14), and the second thread groove (14) is screwed into the spiral (6). The two second valve bodies (8) are fixedly connected to the side wall of the first valve body (1) with a fixing component (9) for fixing the fixed sleeve (12). The sliding protrusion (13) can be slidably connected to the straight groove (4) and the first thread groove (3), and the first thread groove (3) is connected to the straight groove (4). The first thread groove (3) and the second thread groove (14) have the same pitch.

2. The flat plate valve assembly for an oil transmission pipeline according to claim 1, characterized in that: The fixing component (9) includes several connecting rods (901), a rotating ring (902), several triangular plates (903), several sliding rods (904), and several arc-shaped clamping blocks (905). One end of several connecting rods (901) is fixedly connected to the side wall of the second valve body (8) near the first valve body (1), and several connecting rods (901) are equidistantly arranged around the central axis of the second oil guide pipe (5). The other end of several connecting rods (901) is slidably connected to several sliding rods (904). The outer walls of several arc-shaped clamping blocks (905) are fixedly connected to one end of several sliding rods (904). Several triangular plates (903) are slidably connected to the other end of several sliding rods (904). One side wall of several triangular plates (903) is fixedly connected to the inner wall of the rotating ring (902).

3. The flat plate valve assembly for an oil transmission pipeline according to claim 2, characterized in that: Several sliding rods (904), several arc-shaped clamping blocks (905), and several triangular plates (903) are all equidistantly arranged around the central axis of the second oil guide pipe (5). Several arc-shaped clamping blocks (905) are interlocked with each other, and the cylindrical inner wall formed when several arc-shaped clamping blocks (905) are interlocked with each other is in contact with the outer wall of the second oil guide pipe (5) and the outer wall of one end of the fixed sleeve (12).

4. The flat plate valve assembly for an oil transmission pipeline according to claim 3, characterized in that: Both of the fixed sleeves (12) have a number of concave fixing blocks (16) on their outer side walls. The concave fixing blocks (16) are equidistantly arranged around the central axis of the fixed sleeve (12). Each of the concave fixing blocks (16) is hinged with a hand handle (17).

5. A flat valve assembly for an oil transmission pipeline according to claim 4, characterized in that: A fixing frame (18) is fixedly connected to one side wall of each of the two valve bodies (8). A threaded block (23) on the fixing frame (18) is rotatably connected to a threaded rod (19). One end of the threaded rod (19) passes through the threaded block (23) and extends to one side of the threaded block (23) and is fixedly connected to a handle (20). A rotating block (21) is provided on the outer side wall of each of the two rotating rings (902). A rotating rod (22) is rotatably connected to the side wall of each of the two rotating blocks (21) near the valve body (8). The end of the rotating rod (22) away from the rotating block (21) is rotatably connected to the threaded block (23) and slides up and down with the threaded block (23). The threaded block (23) is threadedly connected to the threaded rod (19).

6. A flat valve assembly for an oil transmission pipeline according to claim 5, characterized in that: A second handle (24) is rotatably connected to the first valve body (1). A screw (25) is threaded onto the second handle (24), and the screw (25) is located inside the first valve body (1). A sealing column (26) is fixedly connected to one end of the screw (25), and a gate plate (27) is fixedly connected to the end of the sealing column (26) away from the screw (25).

7. A flat valve assembly for an oil transmission pipeline according to claim 6, characterized in that: A baffle plate (28) is fixedly connected to the upper end face of the gate (27). A gas valve (29) is provided on one side wall of the first valve body (1). The gas valve (29) is located in the space above the baffle plate (28) inside the first valve body (1). A third handle (30) is provided on each of the two second valve bodies (8). The third handle (30) and the first handle (20) are located on both sides of the second valve body (8).

8. A method of using a flat valve assembly for an oil transmission pipeline according to claim 7, characterized in that: Includes the following steps: S1: First, when you want to disassemble the No. 1 valve body (1), turn the two No. 3 handles (30) respectively so that the two No. 2 valve bodies (8) close the oil inlet pipe (10) and the oil outlet pipe (11) respectively, thereby blocking the transmission of oil in the No. 1 oil guide pipe (2) and the No. 2 oil guide pipe (5); S2: Then, rotate the two No. 1 handles (20) respectively, so that the rotating ring (902) rotates. Then, several sliding rods (904) slide on several connecting rods (901) under the drive of several triangular plates (903), which in turn drives several arc-shaped clamping blocks (905) to move away from the central axis of the rotating ring (902), so that the inner sidewall of several arc-shaped clamping blocks (905) moves away from the outer sidewall of one end of the fixed sleeve (12) and the outer sidewall of the No. 2 oil guide pipe (5), so that they no longer contact each other. S3: Next, rotate several hand levers (17) on the outer side wall of the two fixed sleeves (12) respectively, so that they are perpendicular to the central axis of the fixed sleeve (12). Manually rotate several hand levers (17) to drive the fixed sleeve (12) to rotate. When the fixed sleeve (12) rotates, the second thread groove (14) and the spiral (6) will no longer be engaged. At the same time as the engagement ends, the sliding protrusion (13) is located at the connection between the straight groove (4) and the first thread groove (3), and pulls the fixed sleeve (12) in a straight line towards the first valve body (1) so that it is completely separated from the second oil guide pipe (5). S4: Finally, when the two fixed sleeves (12) are fully retracted, the valve body (1) can be removed from the top and bottom for subsequent maintenance and replacement.

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