A separable valve body structure and its usage method

Abstract

The present invention discloses a separable valve body structure and its usage method, relating to the technical field of valve body structures. A separable valve body structure includes a fixing frame, and further includes: two symmetrically arranged connecting pipes, which are respectively fixedly connected to both sides of the fixing frame. Among them, inner pipes are slidably installed on the inner walls of the two fixing frames, an annular boss is fixedly connected to the inner wall of the inner pipe, and an opening and closing part for driving the inner pipe to slide along the axis is provided on the fixing frame; a rubber hose, which is clamped and installed between two annular bosses on the inner walls of the two inner pipes. Among them, grooves are provided at the tops of the two inner pipes, and a valve core is rotatably installed in the rubber hose through a rotating shaft, and the rotating shaft is located in a circular hole formed by the two grooves; the present invention can quickly complete the replacement work of the rubber hose and the valve core, thereby facilitating the maintenance work of the valve body and being able to reduce the maintenance cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of valve body structures, and specifically, relates to a split valve body structure. Background Art

[0002] A butterfly valve, also called a flap valve, is a simple-structured regulating valve. A butterfly valve that can be used for the on-off control of a medium in a low-pressure pipeline refers to a valve in which the closing member (valve flap or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. It mainly functions as a cut-off and throttling in a pipeline. The opening and closing member of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis inside the valve body to achieve opening, closing, or regulation.

[0003] It is found that when the existing butterfly valve is in use, once the valve core inside it, that is, the butterfly plate, is worn or damaged and cannot meet the sealing requirements, the entire valve body needs to be disassembled to complete replacement or repair work, which will result in a relatively high maintenance cost of the butterfly valve. Especially for a butterfly valve with a high usage frequency, the probability of damage to its valve core is also relatively high. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a split valve body structure that can overcome or at least partially solve the above problems.

[0005] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A split valve body structure includes a fixed frame, and further includes: two symmetrically arranged connecting pipes, respectively fixedly connected to both sides of the fixed frame. Among them, inner pipes are slidably installed on the inner walls of both fixed frames. An annular boss is fixedly connected to the inner wall of the inner pipe. An opening and closing part for driving the inner pipe to slide along the axis is provided on the fixed frame; a rubber tube is clamped and installed between two annular bosses on the inner walls of the two inner pipes. Among them, grooves are provided at the tops of both inner pipes. A valve core is rotatably installed in the rubber tube through a rotating shaft, and the rotating shaft is located in a circular hole formed by the two grooves.

[0007] Preferably, the opening and closing part includes a plurality of first threaded rods rotatably connected to the inner wall of the connecting pipe. An internal threaded hole is provided at the axial end of the inner pipe. One end of the first threaded rod is threadedly connected to the internal threaded hole. The other ends of the plurality of first threaded rods extend to the outer wall of the connecting pipe and are fixedly installed with driven gears. A first annular gear for driving the synchronous rotation of the plurality of driven gears is rotatably installed on the outer wall of the connecting pipe.

[0008] Preferably, a cross frame is fixedly connected between the tops of the two fixing frames. A vertical shaft is rotatably installed on the cross frame. A jack is provided at the lower end of the vertical shaft. An inner rod inserted into the jack is fixedly connected to the top of the rotating shaft. A driving part for driving the vertical shaft to rotate is provided on the fixing frame.

[0009] Further, the driving part includes a driving motor fixedly installed on the fixing frame. The output shaft of the driving motor is connected with a driving block. The driving block is connected with the vertical shaft through a connecting part.

[0010] Furthermore, the connecting part includes an upper disc fixedly connected to the top of the vertical shaft. A middle disc fixedly connected to the lower end of the upper disc through a connecting rod is provided on the driving block.

[0011] Furthermore, a transmission gear meshed with one of the driven gears is rotatably installed on the connecting pipe. A lower disc is rotatably installed on the cross frame through a rotating seat. A second annular gear meshed with the driven gear is fixedly installed on the lower disc. The lower disc is located below the middle disc. A replacement part for driving the driving block to lift and lower is provided at the output end of the driving motor.

[0012] Furthermore, the replacement part includes a sleeve fixedly connected to the output end of the driving motor. A lifting column is also installed longitudinally inside the sleeve. A second threaded rod rotatably connected to the sleeve is rotatably connected inside the lifting column. A handle is fixedly installed at the bottom of the second threaded rod.

[0013] Further, an elastic tube is fixedly connected between the inner wall of the inner tube and the connecting pipe. The first threaded rod is located in the cavity formed between the elastic tube and the connecting pipe.

[0014] Furthermore, the fixing frame is in the shape of a protective cover. The upper disc, the middle disc, the lower disc and the handle are all located inside the fixing frame. An operation hole facing the handle is provided on the outer wall of the fixing frame.

[0015] A using method of a separable valve body includes the following steps:

[0016] S1. Rotate the first annular gear to move the inner tubes on both sides away from each other until the rubber tube between the two inner tubes is completely exposed.

[0017] S2. Pull the rubber tube downward from the bottom of the whole device until the inner rod on the rotating shaft is pulled out of the jack.

[0018] S3. Reset the brand-new rubber tube.

[0019] S4. And reverse the first annular gear to move the inner tubes on both sides closer to each other for resetting.

[0020] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0021] 1. By rotating the first annular gear of the present invention until the rubber hose between the two inner tubes is completely exposed, the rubber hose can be pulled downward from the bottom of the entire device at this time until the inner rod on the rotating shaft is pulled out of the jack, and the quick disassembly of the rubber hose and the valve core can be completed. Then, the new rubber hose is reset, and the first annular gear is reversed to complete the replacement of the rubber hose and the valve core, thus facilitating the maintenance work of the valve body and reducing the maintenance cost.

[0022] 2. When the two inner tubes of the present invention are reset by approaching each other, the two inner tubes will cause the two groups of annular bosses to clamp the two ends of the rubber hose respectively, which can effectively ensure that the detachable rubber hose has good sealing performance.

[0023] 3. By driving the second threaded rod to rotate with the handle of the present invention, the lifting column will drive the middle disc away from the upper disc and press against the lower disc through the connecting rod. At this time, the drive motor is started, and all the driven gears can be automatically driven to rotate, thus facilitating the opening and closing actions of the two connecting pipes and also facilitating the replacement work of the rubber hose and the valve core. When the replacement is completed, reverse the handle so that the middle disc presses against the upper disc again.

[0024] 4. With the liftable middle disc of the present invention, the drive motor can respectively realize the adjustment work and replacement work of the valve core, making the entire valve body more flexible in use and the structure more compact and innovative. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the drawings:

[0026] Figure 1 is an isometric structural view of a split valve body structure proposed by the present invention;

[0027] Figure 2 is a structural view of a split valve body structure proposed by the present invention in a separated state of two inner tubes;

[0028] Figure 3 is a partial isometric structural view of a split valve body structure proposed by the present invention;

[0029] Figure 4 is a partial front view sectional structural view of a split valve body structure proposed by the present invention;

[0030] Figure 5 is a partial isometric sectional structural view of a split valve body structure proposed by the present invention;

[0031] Figure 6 is a split valve body structure proposed by the present invention Figure 4Schematic diagram of part A structure

[0032] Figure 7 First - perspective isometric structural schematic diagram of the connecting pipe of a split valve body structure proposed by the present invention

[0033] Figure 8 Second - perspective isometric structural schematic diagram of the connecting pipe of a split valve body structure proposed by the present invention

[0034] Figure 9 Isometric structural schematic diagram of the valve core of a split valve body structure proposed by the present invention

[0035] In the figure: 1, fixed frame; 2, connecting pipe; 3, inner pipe; 4, annular boss; 5, rubber hose; 6, rotating shaft; 7, valve core; 8, first threaded rod; 9, internal threaded hole; 10, driven gear; 11, first annular gear; 12, transmission gear; 13, cross - frame; 14, driving motor; 15, jack; 16, inner rod; 17, vertical shaft; 18, driving block; 19, intermediate disc; 20, upper disc; 21, lower disc; 22, rotating seat; 23, sleeve; 24, lifting column; 25, second threaded rod; 26, handle; 27, connecting rod; 28, sealing ring; 29, groove; 30, elastic tube; 31, flange; 32, operation hole; 33, second annular gear Detailed implementation method

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention

[0037] Embodiment 1: Refer to Figures 1 - 9 , a split valve body structure includes a fixed frame 1 for supporting the entire valve body, and further includes: two symmetrically arranged connecting pipes 2, respectively fixedly connected to both sides of the fixed frame 1, and a flange 31 is fixedly arranged on the connecting pipe 2. Among them, inner pipes 3 are slidably installed on the inner walls of both fixed frames 1, an annular boss 4 is fixedly connected to the inner wall of the inner pipe 3, and an opening - and - closing part for driving the inner pipe 3 to slide along the axis is provided on the fixed frame 1; a rubber hose 5 for ensuring the sealing of the valve core 7 is clamped and installed between two annular bosses 4 on the inner walls of the two inner pipes 3. Among them, grooves 29 are provided at the tops of the two inner pipes 3, the rubber hose 5 is rotatably installed on the valve core 7 through a rotating shaft 6, the rotating shaft 6 is located in a circular hole formed by the two grooves 29, and sealing rings 28 are installed on the opposite surfaces of the two inner pipes 3, in the grooves 29, and on the inner walls where the connecting pipe 2 contacts the inner pipe 3

[0038] During installation, the connecting pipes 2 on both sides are respectively connected to the pipes for transporting liquid medium. When in use, rotate the rotating shaft 6, and the rotating shaft 6 can drive the valve core 7 to rotate, thus completing the opening and closing actions of the valve. When the rubber hose 5 for ensuring sealing and the valve core 7 are damaged and need to be replaced, the inner pipes 3 on both sides are driven by the opening and closing part to move away from each other until the rubber hose 5 between the two inner pipes 3 is completely exposed. At this time, the rubber hose 5 can be pulled downward from the bottom of the whole device until the inner rod 16 on the rotating shaft 6 is pulled out of the jack 15, thus completing the quick disassembly of the rubber hose 5 and the valve core 7. Then, reset the new rubber hose 5, and drive the inner pipes 3 on both sides to move closer and reset by the opening and closing part. The two inner pipes 3 will make the two groups of annular bosses 4 respectively clamp at both ends of the rubber hose 5, which can effectively ensure that the detachable rubber hose 5 has good sealing performance, thus completing the replacement of the rubber hose 5 and the valve core 7, facilitating the maintenance of the valve body and reducing the maintenance cost.

[0039] Embodiment 2: Refer to Figures 4 - 6 and Figure 8 , a split valve body structure, which is basically the same as Embodiment 1. Further:

[0040] The above-mentioned opening and closing part includes a plurality of first threaded rods 8 rotatably connected to the inner wall of the connecting pipe 2. The number of the first threaded rods 8 is 3 - 12, and preferably 6 in this application. The shaft end of the inner pipe 3 is provided with an internal thread hole 9. One end of the first threaded rod 8 is threadedly connected to the internal thread hole 9. The other ends of the plurality of first threaded rods 8 extend to the outer wall of the connecting pipe 2 and are fixedly installed with driven gears 10. A first annular gear 11 for driving the driven gears 10 to rotate synchronously is rotatably installed on the outer wall of the connecting pipe 2.

[0041] Specifically, when the rubber hose 5 for ensuring sealing and the valve core 7 are damaged and need to be replaced, rotate the first annular gear 11. When the first annular gear 11 rotates, it will drive the driven gear 10 to rotate. The driven gear 10 will drive the first threaded rod 8 to rotate. The first threaded rods 8 on both sides will drive the inner pipes 3 on both sides to move away from each other under the action of the internal thread hole 9 until the rubber hose 5 between the two inner pipes 3 is completely exposed. At this time, the rubber hose 5 can be pulled downward from the bottom of the whole device until the inner rod 16 on the rotating shaft 6 is pulled out of the jack 15, thus completing the quick disassembly of the rubber hose 5 and the valve core 7. Then, reset the new rubber hose 5 and reverse the first annular gear 11, thus completing the replacement of the rubber hose 5 and the valve core 7, facilitating the maintenance of the valve body and reducing the maintenance cost.

[0042] An elastic tube 30 is fixedly connected between the inner wall of the inner tube 3 and the connecting tube 2. The first threaded rod 8 is located in the cavity formed between the elastic tube 30 and the connecting tube 2. The elastic tube 30 can isolate the first threaded rod 8 from the liquid in the connecting tube 2, preventing the liquid from affecting the use of the first threaded rod 8.

[0043] Embodiment 3: Refer to Figures 1 - 6 and Figure 9 , a split valve body structure, which is basically the same as Embodiment 2. Further:

[0044] A cross frame 13 is fixedly connected between the tops of the two fixing frames 1. A vertical shaft 17 is rotatably installed on the cross frame 13. A jack 15 is provided at the lower end of the vertical shaft 17. An inner rod 16 inserted into the jack 15 is fixedly connected to the top of the rotating shaft 6. A driving part for driving the vertical shaft 17 to rotate is provided on the fixing frame 1. The driving part includes a driving motor 14 fixedly installed on the fixing frame 1. The output shaft of the driving motor 14 is connected to a driving block 18. The outer shape of the driving block 18 is disk-shaped. The driving block 18 is connected to the vertical shaft 17 through a connecting part. The connecting part includes an upper disk 20 fixedly connected to the top of the vertical shaft 17. An intermediate disk 19 that abuts against the lower end of the upper disk 20 is fixedly connected to the driving block 18 through a connecting rod 27.

[0045] Specifically, when it is necessary to rotate the valve core 7, the driving motor 14 is started. The driving motor 14 will drive the sleeve 23 to rotate. The sleeve 23 will drive the lifting column 24 to rotate. The lifting column 24 will drive the intermediate disk 19 to rotate through the connecting rod 27. The intermediate disk 19 will drive the upper disk 20 that fits with it to rotate. The upper disk 20 will drive the vertical shaft 17 to rotate. The vertical shaft 17 will drive the rotating shaft 6 to rotate through the inner rod 16. The rotating shaft 6 can drive the valve core 7 to rotate, thus quickly completing the opening and closing and angle adjustment of the valve core 7.

[0046] Embodiment 4: Refer to Figures 3 - 6 , a split valve body structure, which is basically the same as Embodiment 3. Further:

[0047] A transmission gear 12 meshingly connected with one of the driven gears 10 is rotatably installed on the connecting tube 2. A lower disk 21 is rotatably installed on the cross frame 13 through a rotating seat 22. A second annular gear 33 meshingly connected with the driven gear 10 is fixedly installed on the lower disk 21. The lower disk 21 is located below the intermediate disk 19. An exchanging part for driving the driving block 18 to move up and down is provided at the output end of the driving motor 14; the exchanging part includes a sleeve 23 fixedly connected to the output end of the driving motor 14. A lifting column 24 is longitudinally installed inside the sleeve 23. A second threaded rod 25 rotatably connected to the sleeve 23 is rotatably connected inside the lifting column 24. A handle 26 is fixedly installed at the bottom of the second threaded rod 25. Anti-slip patterns are provided on the surfaces of the upper disk 20, the intermediate disk 19, and the lower disk 21. The functions of the three are similar to those of a clutch.

[0048] When it is necessary to replace the rubber hose 5 and the valve core 7, turn the handle 26. The handle 26 will drive the second threaded rod 25 to rotate. The second threaded rod 25 will cause the lifting column 24 to move downward. The lifting column 24 will drive the middle disc 19 away from the upper disc 20 through the connecting rod 27 and press tightly against the lower disc 21. At this time, start the driving motor 14, and the middle disc 19 will drive the lower disc 21 to rotate. The lower disc 21 drives the transmission gear 12 to rotate through the second annular gear 33. The transmission gear 12 will rotate with the engaged driven gear 10 and drive all the driven gears 10 to rotate under the action of the first annular gear 11, so as to facilitate the opening and closing actions of the two connecting pipes 2, and thus facilitate the replacement of the rubber hose 5 and the valve core 7. When the replacement is completed, reverse the handle 26 so that the middle disc 19 presses tightly against the upper disc 20 again.

[0049] The outer shape of the above-mentioned fixing frame 1 is in the shape of a protective cover, and the upper disc 20, the middle disc 19, the lower disc 21 and the handle 26 are all located inside the fixing frame 1. An operation hole 32 facing the handle 26 is provided on the outer wall of the fixing frame 1.

[0050] The protective cover can effectively protect most of the transmission structures on the valve body, that is, the upper disc 20, the middle disc 19, the lower disc 21 and the handle 26. The operation hole 32 is provided to facilitate the maintenance personnel to turn the handle 26.

[0051] Example 5: Refer to Figures 1 - 9 , A method for using a split valve body, including the following steps:

[0052] S1. Rotate the first annular gear 11 to move the inner pipes 3 on both sides away from each other until the rubber hose 5 between the two inner pipes 3 is completely exposed;

[0053] S2. Pull the rubber hose 5 downward from the bottom of the whole device until the inner rod 16 on the rotating shaft 6 is pulled out of the jack 15;

[0054] S3. Reset the brand-new rubber hose 5;

[0055] S4. Reverse the first annular gear 11 to move the inner pipes 3 on both sides closer to each other for reset.

[0056] During the installation of the present invention, the connecting pipes 2 on both sides are respectively connected to the pipelines for transporting liquid media. When in use, rotate the rotating shaft 6, and the rotating shaft 6 can drive the valve core 7 to rotate, thus completing the opening and closing actions of the valve. When the rubber tube 5 for ensuring the sealing performance and the valve core 7 are damaged and need to be replaced, rotate the first annular gear 11. When the first annular gear 11 rotates, it will drive the driven gear 10 to rotate. The driven gear 10 will drive the first threaded rod 8 to rotate. The first threaded rods 8 on both sides will drive the inner tubes 3 on both sides to move away from each other under the action of the internal thread holes 9 until the rubber tube 5 between the two inner tubes 3 is completely exposed. At this time, the rubber tube 5 can be pulled downward from the bottom of the entire device until the inner rod 16 on the rotating shaft 6 is pulled out of the jack 15, thus completing the quick disassembly of the rubber tube 5 and the valve core 7. Then, reset the new rubber tube 5 and reverse the first annular gear 11 to complete the replacement of the rubber tube 5 and the valve core 7, which facilitates the maintenance work of the valve body and can reduce the maintenance cost.

[0057] When the two inner tubes 3 approach each other and reset, the two inner tubes 3 will cause the two groups of annular bosses 4 to respectively clamp both ends of the rubber tube 5, which can effectively ensure that the detachable rubber tube 5 has good sealing performance.

[0058] When it is necessary to rotate the valve core 7, start the driving motor 14. The driving motor 14 will drive the sleeve 23 to rotate. The sleeve 23 will drive the lifting column 24 to rotate. The lifting column 24 will drive the middle disk 19 to rotate through the connecting rod 27. The middle disk 19 will drive the upper disk 20 that fits with it to rotate. The upper disk 20 will drive the vertical shaft 17 to rotate. The vertical shaft 17 will drive the rotating shaft 6 to rotate through the inner rod 16, and the rotating shaft 6 can drive the valve core 7 to rotate, thus quickly completing the opening and closing and angle adjustment of the valve core 7.

[0059] When it is necessary to replace the rubber tube 5 and the valve core 7, rotate the handle 26. The handle 26 will drive the second threaded rod 25 to rotate. The second threaded rod 25 will cause the lifting column 24 to move downward. The lifting column 24 will drive the middle disk 19 to move away from the upper disk 20 through the connecting rod 27 and press against the lower disk 21. At this time, start the driving motor 14. The middle disk 19 will drive the lower disk 21 to rotate. The lower disk 21 drives the transmission gear 12 to rotate through the second annular gear 33. The transmission gear 12 will drive the driven gear 10 that meshes with it to rotate, and drive all the driven gears 10 to rotate under the action of the first annular gear 11, thus facilitating the opening and closing actions of the two connecting pipes 2 and also facilitating the replacement of the rubber tube 5 and the valve core 7. When the replacement is completed, reverse the handle 26 so that the middle disk 19 presses against the upper disk 20 again.

[0060] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A separable valve body structure, comprising a fixing frame (1), characterized in that, It further includes: Two symmetrically arranged connecting pipes (2), which are respectively fixedly connected to both sides of the fixing frame (1), wherein, inner pipes (3) are slidably installed on the inner walls of the two fixing frames (1), an annular boss (4) is fixedly connected to the inner wall of the inner pipe (3), and an opening and closing part for driving the inner pipe (3) to slide along the axis is provided on the fixing frame (1); a rubber hose (5), which is clamped and installed between two annular bosses (4) on the inner walls of the two inner pipes (3), wherein, grooves (29) are provided at the tops of the two inner pipes (3), a valve core (7) is rotatably installed in the rubber hose (5) through a rotating shaft (6), and the rotating shaft (6) is located in a circular hole formed by the two grooves (29); The opening and closing part includes a plurality of first threaded rods (8) rotatably connected to the inner wall of the connecting pipe (2), an internal threaded hole (9) is provided at the axial end of the inner pipe (3), one end of the first threaded rod (8) is threadedly connected to the internal threaded hole (9), the other ends of the plurality of first threaded rods (8) extend to the outer wall of the connecting pipe (2), and a driven gear (10) is fixedly installed, and a first annular gear (11) for driving a plurality of driven gears (10) to rotate synchronously is rotatably installed on the outer wall of the connecting pipe (2); A cross frame (13) is fixedly connected between the tops of the two fixing frames (1), a vertical shaft (17) is rotatably installed on the cross frame (13), a jack (15) is provided at the lower end of the vertical shaft (17), a inner rod (16) inserted into the jack (15) is fixedly connected to the top of the rotating shaft (6), and a driving part for driving the vertical shaft (17) to rotate is provided on the fixing frame (1); The driving part includes a driving motor (14) fixedly installed on the fixing frame (1), an output shaft of the driving motor (14) is connected to a driving block (18), and the driving block (18) is connected to the vertical shaft (17) through a connecting part; The connecting part includes an upper disc (20) fixedly connected to the top of the vertical shaft (17), and an intermediate disc (19) fixedly connected to and abutted against the lower end of the upper disc (20) through a connecting rod (27) on the driving block (18); A transmission gear (12) meshed with one of the driven gears (10) is rotatably installed on the connecting pipe (2), a lower disc (21) is rotatably installed on the cross frame (13) through a rotating seat (22), a second annular gear (33) meshed with the driven gear (10) is fixedly installed on the lower disc (21), the lower disc (21) is located below the intermediate disc (19), and a swapping part for driving the driving block (18) to lift is provided at the output end of the driving motor (14).

2. The separable valve body structure according to claim 1, wherein, The swapping part includes a sleeve (23) fixedly connected to the output end of the driving motor (14), a lifting column (24) is longitudinally installed inside the sleeve (23), a second threaded rod (25) rotatably connected to the sleeve (23) is rotatably connected inside the lifting column (24), and a handle (26) is fixedly installed at the bottom of the second threaded rod (25).

3. A separable valve body structure according to claim 1, characterized in that, An elastic tube (30) is fixedly connected between the inner tube (3) and the inner wall of the connecting tube (2), and the first threaded rod (8) is located in the cavity formed between the elastic tube (30) and the connecting tube (2).

4. A separable valve body structure according to claim 2, characterized in that, The shape of the fixing frame (1) is like a protective cover, and the upper disc (20), the middle disc (19), the lower disc (21) and the handle (26) are all located inside the fixing frame (1). An operation hole (32) facing the handle (26) is provided on the outer wall of the fixing frame (1).

5. A method for using a split valve body, characterized in that Adopt a split valve body structure as described in claim 1, including the following steps: S1. Rotate the first annular gear (11) to move the inner tubes (3) on both sides away from each other until the rubber tube (5) between the two inner tubes (3) is completely exposed. S2. Pull the rubber tube (5) downward from the bottom of the whole device until the inner rod (16) on the rotating shaft (6) is pulled out of the jack (15). S3. Reset the brand-new rubber tube (5). S4. Reverse the first annular gear (11) to move the inner tubes (3) on both sides closer to each other for resetting.

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