A valve body structure facilitating disassembly of a valve core

Abstract

The application discloses a valve body structure with a valve core convenient to disassemble and assemble, which comprises a valve body assembly, a disassembling and assembling assembly and an auxiliary mounting assembly.

Description

Technical Field

[0001] This invention relates to the field of valve body technology, and in particular to a valve body structure that facilitates the disassembly and assembly of the valve core. Background Technology

[0002] Control valves are widely used industrial process control instruments in petroleum, chemical, and power industries. They consist of a positioner and an actuator forming an automatic control unit. The positioner's feedback rod is connected to the valve stem of the control valve. One end of the valve stem, extending into the valve body, is connected to the valve core, which controls the valve's opening and closing. The positioner provides feedback on the valve stem's displacement. In existing technology, installing the valve core requires first fixing it to the valve stem, then manually inserting the valve core into the valve core seat within the valve body. This process is repeated for each component above the valve core. Replacing the valve core also requires disassembling each component connected to the valve body, removing the valve stem and valve core, replacing them with a new valve core, and finally reassembling them. This process is cumbersome. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the above-mentioned and / or existing valve problems of difficult maintenance of valve cores, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the valve core replacement remains unchanged in the prior art. The present invention provides a valve body structure that facilitates the disassembly and assembly of the valve core, which can realize the disassembly and installation of the valve core without removing other components connected to the valve body, making replacement convenient.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a valve body structure that facilitates the disassembly and assembly of the valve core, comprising, The valve body assembly includes a valve body body, a main body housing with a receiving cavity is fixed to the outer side of one end of the valve body body, the main body housing has an inlet and outlet communicating with the receiving cavity, the valve body body has an inlet and outlet communicating with the receiving cavity at one end opposite to the main body housing, and a valve body seat is fixedly connected to the upper side of the valve body body. The assembly includes a rotating lifting drive shaft rotatably connected to the valve body seat. A follower is connected to the rotating lifting drive shaft and moves parallel to the central axis of the rotating lifting drive shaft as the rotating lifting drive shaft rotates. One end of the follower, which extends into the valve body, is rotatably connected to an assembly gear that can rotate with the rotating lifting drive shaft. The auxiliary installation component includes a movable bracket slidably connected within the main housing. An auxiliary lifting screw, threaded into and rotatable within the valve core, is connected to the movable bracket. An auxiliary installation transmission unit is fixed to the lower end of the valve core. A transmission groove is formed at the upward-facing end of the valve core, and a disassembly / assembly transmission unit that engages with a disassembly / assembly gear is fixed within the transmission groove. A first transmission unit capable of driving the auxiliary lifting screw to rotate and a second transmission unit capable of driving the transmission unit to rotate are respectively connected to the movable bracket. When the auxiliary lifting screw rotates, the valve core moves linearly in the height direction; when the valve core rotates and the auxiliary lifting screw is fixed, the valve core rotates.

[0007] A sealing plate that seals the inlet and outlet is fixed to one end of the movable bracket relative to the valve body. A fixed shaft is fixed on the movable bracket. An intermediate plate is connected inside the auxiliary lifting screw, which can rotate along the outer circumference of the intermediate plate. A central hole is opened on the intermediate plate. A fixed countersunk hole coaxial with the central hole is opened at the upward end of the fixed shaft. A center hole for easy operation is opened on the auxiliary lifting screw. An insertion hole for fitting onto the fixed shaft is opened at the downward end of the auxiliary lifting screw on the lower side of the intermediate plate. In the initial state, when the valve core is not installed into the valve body, the sealing plate is inside the valve body at the inlet and outlet position, with the inner side of the sealing plate flush with the inner side of the valve body, sealing the inlet and outlet. Several limit rods are arranged on the movable bracket outside the fixed shaft, with the valve core facing downward. One end has several sliding countersunk holes corresponding to the rotation limit rod; additionally, the upper side of the disassembly and assembly gear fits against the lower side of the valve body seat; when installing the valve core, first screw the auxiliary lifting screw to the lower part of the valve core, so that the lower side of the auxiliary lifting screw is flush with the lower side of the disassembly and assembly gear. The auxiliary lifting screw is sleeved onto the fixed shaft through the insertion hole. When the intermediate plate abuts against the upper side of the fixed shaft, use the fixing bolt to screw into the center hole and the fixing countersunk hole to fix the intermediate plate to the fixed shaft, restricting the axial movement of the auxiliary lifting screw. The valve core is inserted into the rotation limit rod through the sliding countersunk hole; move the moving bracket towards the center of the valve body. When the positioning step on the upper side of the moving bracket abuts against the main body housing, the valve core is aligned with the valve stem, the moving bracket stops moving, and the auxiliary lifting screw rotates. When the valve core moves upward and leaves the limit rod, the disassembly and assembly transmission unit and the disassembly and assembly gear engage. With the valve core on the lower side of the valve stem, the auxiliary lifting screw is fixed and cannot rotate. Then, the auxiliary installation transmission unit rotates, causing the valve core to rotate and move upward, eventually reaching the valve stem. At this point, the component that rotates the auxiliary installation transmission unit can be released, allowing the rotating lifting transmission shaft to rotate. This shaft drives the follower to move upward, simultaneously driving the disassembly and assembly gear to rotate. The follower drives the disassembly and assembly gear to move upward, which in turn drives the valve core to rotate. The valve core continuously rotates upward onto the valve stem. When the upper side of the valve core is flush with the lower side of the valve body seat, the rotating lifting transmission shaft is stopped. At this point, the upper side of the disassembly and assembly gear also contacts the lower side of the valve body seat, fixing the rotating lifting transmission shaft and completing the valve core installation. When the valve core needs to be replaced, first remove the valve core. The process is as follows: The auxiliary lifting screw is removed, causing the rotating lifting transmission shaft to rotate in the opposite direction. The disassembly and assembly gear drives the valve core to rotate in the opposite direction, causing the valve core to rotate and move downwards along the valve stem. The disassembly and assembly gear also moves downwards synchronously under the action of the follower, ensuring that the disassembly and assembly gear always engages with the disassembly and assembly transmission part. When the valve core rotates downwards and disengages from the valve stem, it inserts into the fixed shaft of the moving bracket, causing the moving bracket to move towards the outer end of the main body housing. When the valve core moves to the position aligned with the inlet and outlet, the moving bracket stops moving, the valve core is removed, and a new valve core is installed. The valve core installation process is as described above and will not be repeated. This achieves valve core replacement. This invention allows for valve core disassembly and installation without removing components from the valve body, making operation more convenient. It can be applied to the valve body of regulating valves.

[0008] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, a sliding shaft is slidably connected inside the rotating lifting transmission shaft, and the lower end of the sliding shaft is connected to the disassembly and assembly gear.

[0009] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, the follower component includes a follower sleeve slidably connected to a rotating lifting transmission shaft. The outer circumference of the rotating lifting transmission shaft is provided with a threaded groove. A follower column inserted into the threaded groove is connected to the follower sleeve. When the disassembly and assembly gear rotates and drives the valve core to rotate and move, the follower sleeve and the valve core move synchronously.

[0010] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, the following features: a plurality of lifting connecting rods slidably connected to the valve body seat are arranged on the lower side of the follower sleeve; a lifting and rotating transmission block is connected to the disassembly gear; the lifting and rotating transmission block includes a connecting plate fixedly connected to the lower side of the disassembly gear and the lower side of the sliding shaft; a connecting hole is opened in the center of the disassembly gear; a connecting shaft inserted into the connecting hole is fixed on the upper side of the connecting plate; an annular connecting groove is formed between the outer side of the connecting shaft and the inner edge of the disassembly gear, allowing the lifting connecting rod to be inserted; the disassembly gear rotates around the lifting connecting rod via the connecting groove; a connecting groove is opened on the inner side of the lifting connecting rod on the upper side of the connecting shaft; a plurality of connecting blocks corresponding one-to-one with the lifting connecting rod are connected to the upper side of the connecting shaft; the outer end of the connecting block is inserted into the corresponding connecting groove, thereby realizing the synchronous movement of the disassembly gear and the follower.

[0011] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, the first transmission unit includes an auxiliary lifting transmission shaft rotatably connected to a movable bracket, an auxiliary lifting transmission wheel connected to the lower part of the auxiliary lifting transmission shaft, an auxiliary lifting driven wheel fixedly connected to the lower end of the auxiliary lifting screw, and the auxiliary lifting transmission wheel being connected to the auxiliary lifting driven wheel via an auxiliary lifting transmission belt.

[0012] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, the auxiliary installation assembly further includes a lifting support bracket slidably connected to the connecting bracket, the lifting support bracket being capable of reciprocating linear movement in the height direction, the second transmission unit including an auxiliary screwing transmission sleeve sleeved on the auxiliary lifting transmission shaft and rotatably connected to the moving bracket, the lifting support bracket being rotatably connected to an auxiliary installation transmission component that cooperates with the auxiliary installation transmission part, and the auxiliary installation transmission component and the auxiliary screwing transmission sleeve being energized together.

[0013] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, wherein: an auxiliary screw-in drive wheel is slidably connected to the auxiliary screw-in drive sleeve, the auxiliary screw-in drive wheel is rotatably connected to the lifting support bracket, an auxiliary screw-in driven wheel is rotatably connected to the lifting support bracket, the auxiliary installation transmission component is fixedly connected to the lower side of the auxiliary screw-in driven wheel, and the auxiliary screw-in drive wheel is connected to the auxiliary screw-in driven wheel via an auxiliary screw-in drive belt.

[0014] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, when the auxiliary lifting screw rotates to move the valve core upward, the lifting support bracket can move upward synchronously with the valve core.

[0015] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, wherein: a vertically arranged transmission screw is rotatably connected to the movable bracket, the lifting support bracket is threadedly connected to the transmission screw, an auxiliary lifting driven gear is fixedly connected to the lower part of the transmission screw, an auxiliary lifting transmission gear is fixedly connected to the auxiliary lifting transmission wheel on the lower side of the auxiliary lifting transmission belt, and the auxiliary lifting transmission gear and the auxiliary lifting driven gear cooperate.

[0016] As a preferred embodiment of the valve body structure for easy disassembly and assembly of the valve core described in this invention, the upper end of the movable bracket has a through hole, the auxiliary screw-in transmission sleeve and the through hole are coaxial, the upper end of the auxiliary lifting transmission shaft has a non-circular first insertion groove, and the upper end of the auxiliary screw-in transmission sleeve on the outer periphery of the auxiliary lifting transmission shaft has a non-circular second insertion groove. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a partial cross-sectional three-dimensional structure of the present invention. Figure 1 .

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 for Figure 1 A magnified view of a section at point B in the middle.

[0020] Figure 4 This is a three-dimensional structural diagram of the follower connected to the lifting transmission shaft in this invention.

[0021] Figure 5This is a partial cross-sectional perspective view of the three-dimensional structure of the present invention.

[0022] Figure 6 for Figure 5 A magnified view of a section at point C.

[0023] Figure 7 This is a perspective view of the auxiliary valve core structure in this invention.

[0024] Figure 8 This is a top-view cross-sectional view of the auxiliary installation valve core structure in this invention.

[0025] Figure 9 for Figure 8 A magnified view of a section at point D.

[0026] Among them, 100 is the valve body assembly, 101 is the valve stem, 102 is the valve body seat, 103 is the valve core seat, 104 is the valve body, 104a is the main body housing, 105 is the main body plate, 105a is the limiting thread countersunk hole, 200 is the valve core, 201 is the auxiliary installation transmission part, 202 is the disassembly and assembly transmission part, 203 is the transmission countersunk groove, 301 is the disassembly and assembly drive gear, 302 is the rotating part, 302a is the anti-rotation hole, 303 is the rotation lifting transmission shaft, 304 is the disassembly and assembly driven gear, and 305 is the following... Moving parts, 305a lifting connecting rod, 305a-1 connecting countersunk groove, 305b follower sleeve, 306 connecting block, 307 disassembly and assembly gear, 308 sliding shaft, 309 lifting and rotating transmission block, 309a connecting plate, 309b connecting shaft, 310 follower column, 310a threaded groove, 400 auxiliary installation assembly, 401 moving lead screw, 401a handle, 402 moving bracket, 402a sealing plate, 402b limited rotation countersunk hole, 402c Positioning step, 402d fixed shaft, 402d-1 fixed countersunk hole, 402e rotation limit rod, 403 second transmission unit, 403a auxiliary screw-in transmission wheel, 403b auxiliary screw-in transmission belt, 403c auxiliary mounting transmission component, 403d auxiliary screw-in driven wheel, 403e auxiliary screw-in transmission sleeve, 403e-1 second insertion countersunk groove, 403f synchronous plate, 403g auxiliary screw-in rod, 404 first transmission unit, 404a transmission screw. 404b Auxiliary lifting drive shaft, 404b-1 First insertion groove, 404c Auxiliary lifting drive belt, 404d Auxiliary lifting driven wheel, 404e Auxiliary lifting drive wheel, 404f Auxiliary lifting drive gear, 404g Auxiliary lifting driven gear, 404h Auxiliary lifting rod, 405 Lifting support bracket, 406 Auxiliary lifting screw, 406a Center hole, 407 Intermediate plate, 407a Intermediate hole, 408 Support shaft. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1 Reference Figure 1 , Figure 3 and Figure 7 This is the first embodiment of the present invention. This embodiment provides a valve body structure that facilitates the disassembly and assembly of the valve core. It can achieve the disassembly and assembly of the valve core 200 without removing the components on the valve body 104, making the operation more convenient.

[0031] A valve body structure for easy disassembly and assembly of a valve core includes a valve body assembly 100, comprising a valve body 104. A main body housing 104a with a receiving cavity is fixed to the outer side of one end of the valve body 104. The main body housing 104a has an inlet and outlet communicating with the receiving cavity. The valve body 104 has an inlet and outlet communicating with the receiving cavity at one end opposite to the main body housing 104a. A valve body seat 102 is fixedly connected to the upper side of the valve body 104. A valve core seat 103 is fixedly connected inside the valve body seat 102. A disassembly and assembly assembly for disassembling and assembling the valve core 200 is connected to the valve body seat 102. An auxiliary installation assembly 400 for assisting in the installation of the valve core 200 is connected to the main body housing 104a.

[0032] Specifically, the disassembly and assembly components include a rotating lifting drive shaft 303 rotatably connected to the valve body seat 102, a follower 305 connected to the rotating lifting drive shaft 303 that moves parallel to the central axis of the rotating lifting drive shaft 303 as it rotates, and a disassembly and assembly gear 307 that can rotate with the rotating lifting drive shaft 303 at one end of the follower 305 that extends into the valve body 104; the auxiliary installation component 400 includes a movable bracket 402 slidably connected to the main housing 104a, and an auxiliary lifting mechanism that can be threaded into the valve core 200 and can rotate. The lower end of the valve core 200 is fixed with an auxiliary installation transmission part 201 and a lead screw 406. The upper end of the valve core 200 has a transmission groove 203. The transmission groove 203 of the valve core 200 is fixed with a disassembly and assembly transmission part 202 that cooperates with the disassembly and assembly gear 307. The movable bracket 402 is respectively connected to a first transmission unit 404 that can drive the auxiliary lifting screw 406 to rotate and a second transmission unit 403 that can drive the transmission part to rotate. When the auxiliary lifting screw 406 rotates, the valve core 200 moves linearly in the height direction. When the valve core 200 rotates and the auxiliary lifting screw 406 is fixed, the valve core 200 rotates and moves.

[0033] A sealing plate 402a, capable of sealing the inlet and outlet, is fixed to one end of the movable bracket 402 relative to the valve body 104. A fixed shaft 402d is fixed on the movable bracket 402. An intermediate plate 407 is connected inside the auxiliary lifting screw 406. The auxiliary lifting screw 406 can rotate along the outer circumference of the intermediate plate 407. An intermediate hole 407a is opened on the intermediate plate 407. The upward-facing end of the fixed shaft 402d has a hole coaxial with the intermediate hole 407a. The fixed countersunk hole 402d-1 and the auxiliary lifting screw 406 have a central hole 406a for easy operation. The lower end of the auxiliary lifting screw 406 on the underside of the intermediate plate 407 has a insertion hole that can be fitted onto the fixed shaft 402d. In the initial state, when the valve core 200 is not installed into the valve body 104, the sealing plate 402a is inside the valve body 104 at the inlet and outlet positions. The inner side of the sealing plate 402a and the inner side of the valve body 104 are... The sealing plate 402a seals the inlet and outlet; several rotation limit rods 402e are arranged on the movable bracket 402 outside the fixed shaft 402d, and several sliding countersunk holes corresponding to the rotation limit rods 402e are opened on the downward end of the valve core 200; in addition, the upper side of the disassembly gear 307 is attached to the lower side of the valve body seat 102; when installing the valve core 200, first screw the auxiliary lifting screw 406 to the lower part of the valve core 200, and the lower side of the auxiliary lifting screw 406 and The lower side of the disassembly gear 307 is flush with the auxiliary lifting screw 406, which is sleeved onto the fixed shaft 402d through the insertion hole. When the intermediate plate 407 abuts against the upper side of the fixed shaft 402d, the fixing bolt is screwed into the intermediate hole 407a and the fixing countersunk hole 402d-1 to fix the intermediate plate 407 onto the fixed shaft 402d, thus limiting the movement of the auxiliary lifting screw in the axial direction. The valve core 200 is inserted into the rotation limit rod 402e through the sliding countersunk hole.The movable bracket 402 is moved towards the center of the valve body 104. When the positioning step 402c on the upper side of the movable bracket 402 abuts against the main housing 104a, the valve core 200 is aligned with the valve stem 101. The movable bracket 402 stops moving, causing the auxiliary lifting screw 406 to rotate. The valve core 200 moves upward. When the valve core 200 leaves the limit rod 402e, the disassembly and assembly transmission unit 202 and the disassembly and assembly gear 307 engage. The valve core 200 is below the valve stem 101, fixing the auxiliary lifting screw 406 so it cannot rotate. Then, the auxiliary mounting transmission unit 201 is rotated. As the valve core 200 rotates upwards, it rotates onto the valve stem 101. At this point, the component that allows the auxiliary installation transmission part 201 to rotate can be released, causing the rotating lifting transmission shaft 303 to rotate. The rotating lifting transmission shaft 303 drives the follower 305 to move upwards, simultaneously driving the disassembly and assembly gear 307 to rotate. The follower 305 drives the disassembly and assembly gear 307 to move upwards, and the disassembly and assembly gear 307 drives the valve core 200 to rotate. The valve core 200 continuously rotates onto the valve stem 101 and moves upwards. When the upper side of the valve core 200 is flush with the lower side of the valve body seat 102, the rotating lifting transmission shaft 303 is stopped. At this point, the disassembly and assembly gear 307... The upper side of valve 07 also contacts the lower side of valve body seat 102, fixing the rotating lifting transmission shaft 303 and realizing the installation of valve core 200. When valve core 200 needs to be replaced, valve core 200 is first removed. The specific process is as follows: remove auxiliary lifting screw 406, causing rotating lifting transmission shaft 303 to rotate in the opposite direction. Disassembly and assembly gear 307 drives valve core 200 to rotate in the opposite direction. Valve core 200 rotates and moves downward along valve stem 101. Disassembly and assembly gear 307 also moves downward synchronously under the action of follower 305, so that disassembly and assembly gear 307 can always cooperate with disassembly and assembly transmission part 202. When valve core 200... When the valve core 200 rotates downwards and disengages from the valve stem 101, it inserts into the fixed shaft 402d of the movable bracket 402, causing the movable bracket 402 to move towards the outer end of the main body housing 104a. When the valve core 200 moves to the position aligned with the inlet and outlet, the movable bracket 402 stops moving, the valve core 200 is removed, and a new valve core 200 is installed. The process of installing the valve core 200 is as described above and will not be repeated. This allows for the replacement of the valve core 200. This invention allows for the disassembly and installation of the valve core 200 without removing components from the valve body, making operation more convenient.

[0034] Specifically, one end of the moving screw 401 is rotatably connected inside the main body housing 104a. The lower part of the moving bracket 402 is threadedly connected to the moving screw 401. A main body plate 105 is fixedly connected to the outside of the main body housing 104a. The outer end of the moving screw 401 is rotatably connected to the main body plate 105. A handle 401a is fixedly connected to the end of the moving screw 401 that extends out of the main body plate 105. A limit hole is opened on the handle 401a. Several limit thread countersunk holes 105a that are coaxial with the limit hole are opened on the main body plate 105 (the position of the limit thread countersunk holes 105a is based on the position of the valve core 200 aligned with the valve stem 101 and the fixed shaft 402d aligned with the inlet and outlet). A limit pin is connected to the handle 401a through the limit hole. When the moving bracket 402 moves to a suitable position and needs to be fixed, the limit pin is screwed into the corresponding limit thread countersunk hole 105a to fix the moving screw 401 and prevent it from rotating.

[0035] Example 2 Reference Figures 1-4 This is the second embodiment of the present invention. Based on the previous embodiment, this embodiment provides a valve body structure that facilitates the disassembly and assembly of the valve core. It can realize the synchronous downward movement of the disassembly and assembly gear 307 and follower 305, as well as the synchronous rotation of the rotation lifting transmission shaft 303.

[0036] Specifically, a sliding shaft 308 is slidably connected inside the rotating lifting transmission shaft 303. The lower end of the sliding shaft 308 is connected to the disassembly and assembly gear 307. The follower 305 includes a follower sleeve 305b slidably connected to the rotating lifting transmission shaft 303. Several threaded grooves 310a are arranged on the outer periphery of the rotating lifting transmission shaft 303. Follower pins 310 inserted into the threaded grooves 310a are connected to the follower sleeve 305b. When the disassembly and assembly gear 307 rotates and drives the valve core 200 to rotate and move, the follower sleeve 305b and the valve core 200 move synchronously. Several lifting connecting rods 305a are arranged on the lower side of the follower sleeve 305b and slidably connected to the valve body seat 102. A lifting rotating transmission block 309 is connected to the disassembly and assembly gear 307. The lifting rotating transmission block 309 includes components fixedly connected to the disassembly and assembly gear. A connecting plate 309a is located on the lower side of wheel 307 and the lower side of sliding shaft 308. A connecting hole is opened in the center of the disassembly and assembly gear 307. A connecting shaft 309b is fixed on the upper side of the connecting plate 309a and inserted into the connecting hole. An annular connecting groove is formed between the outer side of the connecting shaft 309b and the inner edge of the disassembly and assembly gear 307, which allows the lifting connecting rod 305a to be inserted. The disassembly and assembly gear 307 rotates around the lifting connecting rod 305a through the connecting groove. A connecting groove 305a-1 is opened on the inner side of the lifting connecting rod 305a on the upper side of the connecting shaft 309b. Several connecting blocks 306, which correspond one-to-one with the lifting connecting rod 305a, are connected to the upper side of the connecting shaft 309b. The outer end of the connecting block 306 is inserted into the corresponding connecting groove 305a-1, realizing the synchronous movement of the disassembly and assembly gear 307 and the follower 305.

[0037] A disassembly and assembly drive gear 301 is rotatably connected to the upper side of the valve body seat 102. A disassembly and assembly driven gear 304 is connected to one end of the rotating lifting transmission shaft 303 extending upwards beyond the valve body seat 102. The disassembly and assembly drive gear 301 and the disassembly and assembly driven gear 304 are connected in a transmission connection. A rotating component 302 for easy rotation is fixedly connected to the upper side of the disassembly and assembly drive gear 301. A support shaft is fixedly connected to the upper side of the valve body seat 102, and the disassembly and assembly drive gear 301 is rotatably connected to the support shaft. An anti-rotation hole 302a is opened on the rotating component 302. Before the valve core 200 rotates and moves upward away from the auxiliary lifting screw 406, the rotating part 302 is not fixed, and the rotating lifting transmission shaft 303 rotates freely. When the valve core 200 rotates and moves upward away from the auxiliary lifting screw 406, the rotating part 302 rotates, which drives the disassembly and assembly drive gear 301 to rotate. The disassembly and assembly drive gear 301 drives the rotating lifting transmission shaft 303 to rotate via the disassembly and assembly driven gear 304. The rotating lifting transmission shaft 303 drives the sliding shaft 308 to rotate, and at the same time... The follower column 310 drives the follower sleeve 305b to move, the lifting connecting rod 305a drives the disassembly and assembly gear 307 to move, and at the same time the sliding shaft 308 drives the disassembly and assembly gear 307 to rotate. Adjusting the rotation direction of the rotating component 302 causes the disassembly and assembly gear 307 to rotate and move in the desired direction. For example, when the follower sleeve 305b moves downward, the disassembly and assembly gear 307 rotates and moves downward. The disassembly and assembly gear 307 drives the valve core 200 to rotate via the disassembly and assembly transmission part 202, and the valve core 200 rotates and moves downward along the valve stem 101. The process is used to disassemble the valve core 200; when the follower sleeve 305b moves upward, the disassembly and assembly gear 307 rotates and moves upward. The disassembly and assembly gear 307 drives the valve core 200 to rotate via the disassembly and assembly transmission part 202. The valve core 200 rotates and moves upward along the valve stem 101. This process is used to install the valve core 200 onto the valve stem 101. When the disassembly and assembly of the valve core 200 is completed, the anti-rotation bolt is screwed into the anti-rotation hole 302a and the support shaft to fix the rotating part 302 relative to the support shaft. The rotating lifting transmission shaft 303 is fixed and cannot rotate.

[0038] Example 3 Reference Figures 5-9 This is the third embodiment of the present invention. This embodiment is based on the first two embodiments and can further realize the rotation of the auxiliary lifting screw 406 and the initial rotation and upward movement of the valve core 200 onto the valve stem 101.

[0039] Specifically, the first transmission unit 404 includes an auxiliary lifting transmission shaft 404b rotatably connected to the movable bracket 402. An auxiliary lifting transmission wheel 404e is connected to the lower part of the auxiliary lifting transmission shaft 404b. An auxiliary lifting driven wheel 404d is fixedly connected to the lower end of the auxiliary lifting screw 406. The auxiliary lifting transmission wheel 404e is connected to the auxiliary lifting driven wheel via an auxiliary lifting transmission belt 404c. The auxiliary mounting assembly 400 also includes a lifting support bracket 405 slidably connected to the connecting bracket. The lowering support bracket 405 can reciprocate linearly in the height direction. The second transmission unit 403 includes an auxiliary screw-in transmission sleeve 403e sleeved on the auxiliary lifting transmission shaft 404b and rotatably connected to the movable bracket 402. The auxiliary screw-in transmission sleeve 403e is non-circular. The upper end of the movable bracket 402 has a through hole. The auxiliary screw-in transmission sleeve 403e and the through hole are coaxial. The upward-facing end of the auxiliary lifting transmission shaft 404b has a non-circular first insertion groove 404b-1. The outer end of the auxiliary screw-in transmission sleeve 403e on the periphery of 04b has a non-circular second insertion groove 403e-1. An auxiliary installation transmission component 403c, which mates with the auxiliary installation transmission part 201, is rotatably connected to the lifting support bracket 405. Both the auxiliary installation transmission part 201 and the auxiliary installation transmission component 403c are preferably gears. The auxiliary installation transmission component 403c and the auxiliary screw-in transmission sleeve 403e are connected in a transmission manner. When the auxiliary lifting screw 406 rotates, causing the valve core 200 to move upward, the lifting support bracket… 405 can move upward synchronously with the valve core 200. The moving bracket 402 is also rotatably connected to a vertically set transmission screw 404a. The lifting support bracket 405 is threadedly connected to the transmission screw 404a. The lower part of the transmission screw 404a is fixedly connected to an auxiliary lifting driven gear 404g. The auxiliary lifting transmission wheel 404e on the lower side of the auxiliary lifting transmission belt 404c is fixedly connected to an auxiliary lifting transmission gear 404f. The auxiliary lifting transmission gear 404f and the auxiliary lifting driven gear 404g cooperate with each other.

[0040] It also includes an auxiliary lifting rod 404h and an auxiliary screw-in rod 403g. The upper end of the movable bracket 402 has a rotation-limiting countersunk hole 402b corresponding to the auxiliary lifting rod 404h. The lower part of one end of the auxiliary lifting rod 404h can be inserted into the first insertion countersunk groove 404b-1, and the lower part of one end of the auxiliary screw-in rod 403g can be inserted into the second insertion countersunk groove 403e-1. When the auxiliary lifting rod 404h is inserted into the first insertion countersunk groove 404b-1 at a suitable position, the auxiliary lifting rod 404h is held and rotated, and the auxiliary lifting rod 404h drives... The auxiliary lifting drive shaft 404b rotates, driving the auxiliary lifting drive wheel 404e to rotate. The auxiliary lifting drive wheel 404e, via the auxiliary lifting drive belt 404c, drives the auxiliary lifting driven wheel 404d to rotate. Simultaneously, the auxiliary lifting drive wheel 404e, via the auxiliary lifting drive gear 404f, drives the auxiliary lifting driven gear 404g to rotate, which in turn drives the transmission screw 404a to rotate. The transmission screw 404a and the auxiliary lifting screw 406 respectively drive the valve core 200 and the lifting... The lowering support bracket 405 moves upward synchronously, and the lifting support bracket 405 drives the auxiliary installation transmission component 403c and other components to move upward synchronously, so that the auxiliary installation transmission component 403c can always cooperate with the auxiliary installation transmission part 201 during the rise of the valve core 200. When the valve core 200 leaves the rotation limiting rod 402e, the other end of the auxiliary lifting rod 404h can be aligned with the rotation limiting countersunk hole 402b. The auxiliary lifting rod 404h is further inserted downward, so that the other end of the auxiliary lifting rod 404h is inserted into the rotation limiting countersunk hole 402b, and the auxiliary lifting screw 406 is screwed in. Fixed and unable to rotate, insert the auxiliary screw-in rod 403g into the second insertion slot 403e-1, rotate the auxiliary screw-in rod 403g, the auxiliary screw-in rod 403g drives the auxiliary screw-in transmission sleeve 403e to rotate, and through the auxiliary installation transmission component 403c drives the auxiliary installation transmission part 201 to rotate, the auxiliary installation transmission part 201 drives the valve core 200 to rotate and move upward along the auxiliary lifting screw 406, the valve core 200 leaves the auxiliary lifting screw 406, the auxiliary installation is completed, and the auxiliary lifting rod 404h and the auxiliary screw-in rod 403g are removed.

[0041] Specifically, an auxiliary rotating transmission wheel 403a is slidably connected to the auxiliary rotating transmission sleeve 403e. The auxiliary rotating transmission wheel 403a is rotatably connected to the lifting support bracket 405. A synchronous plate 403f, which is attached to the lifting support bracket 405, is fixedly connected to the lower side of the auxiliary rotating transmission wheel 403a. A support shaft 408 is also fixedly connected to the movable bracket 402. An auxiliary rotating driven wheel 403d is rotatably connected to the support shaft 408. An auxiliary installation transmission component 403c is fixedly connected to the lower side of the auxiliary rotating driven wheel 403d. The upper side of the auxiliary installation transmission component 403c is attached to the lifting support bracket 405, so as to realize the synchronous lifting and lowering of the auxiliary installation transmission component 403c, the auxiliary rotating transmission wheel 403a, and the lifting support bracket 405. The auxiliary rotating transmission wheel 403a is connected to the auxiliary rotating driven wheel 403d via the auxiliary rotating transmission belt 403b.

[0042] When the valve core 200 needs to be initially screwed onto the valve stem 101, insert the auxiliary screwing rod 403g into the second insertion groove 403e-1, hold the auxiliary screwing rod 403g and rotate it. The auxiliary screwing rod 403g drives the auxiliary screwing transmission sleeve 403e to rotate, the auxiliary screwing transmission sleeve 403e drives the auxiliary screwing transmission wheel 403a to rotate, the auxiliary screwing transmission wheel 403a drives the auxiliary screwing driven wheel 403d to rotate via the auxiliary screwing transmission belt 403b, the auxiliary screwing driven wheel 403d drives the auxiliary mounting transmission component 403c to rotate, and the auxiliary mounting transmission component 403c drives the auxiliary mounting transmission part 201 to rotate. When the valve core 200 leaves the auxiliary lifting transmission screw 404a, remove the auxiliary screwing rod 403g, move the moving bracket 402 out of the valve body 104, and the sealing plate 402a closes the inlet and outlet.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A valve body structure for easy assembly and disassembly of the valve core, characterized in that: include, The valve body assembly (100) includes a valve body body (104), a main body housing (104a) with a receiving cavity is fixed to the outer side of one end of the valve body body (104), the main body housing (104a) has an inlet and outlet communicating with the receiving cavity, the valve body body (104) has an inlet and outlet communicating with the receiving cavity at one end opposite to the main body housing (104a), and a valve body seat (102) is fixedly connected to the upper side of the valve body body (104). The assembly includes a rotating lifting drive shaft rotatably connected to the valve body seat (102). A follower (305) is connected to the rotating lifting drive shaft and moves parallel to the central axis of the rotating lifting drive shaft as the rotating lifting drive shaft rotates. One end of the follower (305) extending into the valve body (104) is rotatably connected to an assembly gear (307) that can rotate with the rotating lifting drive shaft. The follower (305) includes a follower sleeve (305b) slidably connected to the rotating lifting drive shaft. The outer circumference of the rotating lifting drive shaft is provided with a threaded groove (310a). A follower column (310) inserted into the threaded groove (310a) is connected to the follower sleeve (305b). When the assembly gear (307) rotates and drives the valve core (200) to rotate and move, the follower sleeve (305b) and the valve core (200) move synchronously. The auxiliary installation assembly (400) includes a movable bracket (402) slidably connected within the main housing (104a). An auxiliary lifting screw (406) capable of being threaded into and rotatable within a valve core (200) is connected to the movable bracket (402). An auxiliary installation transmission part (201) is fixed to the lower end of the valve core (200). A transmission groove (203) is formed at the upward-facing end of the valve core (200). A disassembly and assembly transmission part (202) cooperating with a disassembly and assembly gear (307) is fixed within the transmission groove (203) of the valve core (200). A first transmission unit (404) capable of driving the auxiliary lifting screw (406) to rotate and a transmission unit (405) capable of driving the auxiliary installation transmission part (201) to rotate are respectively connected to the movable bracket (402). The second transmission unit (403) includes an auxiliary lifting screw (406) that rotates while the valve core (200) moves linearly in the height direction; when the valve core (200) rotates and the auxiliary lifting screw (406) is fixed, the valve core (200) rotates and moves; the first transmission unit (404) includes an auxiliary lifting transmission shaft (404b) rotatably connected to a movable bracket (402), an auxiliary lifting transmission wheel (404e) connected to the lower part of the auxiliary lifting transmission shaft (404b), an auxiliary lifting driven wheel (404d) fixedly connected to the lower end of the auxiliary lifting screw (406), and the auxiliary lifting transmission wheel (404e) connected to the auxiliary lifting driven wheel (404d) via an auxiliary lifting transmission belt (404c).

2. The valve body structure with a convenient valve core for disassembly and assembly as described in claim 1, characterized in that: The rotating lifting transmission shaft is slidably connected to a sliding shaft (308), and the lower end of the sliding shaft (308) is connected to a disassembly gear (307).

3. The valve body structure with a convenient valve core for disassembly and assembly as described in claim 2, characterized in that: The lower side of the follower sleeve (305b) has several lifting connecting rods (305a) slidably connected to the valve body seat (102). The disassembly gear (307) is connected to a lifting rotation transmission block (309). The lifting rotation transmission block (309) includes a connecting plate (309a) fixedly connected to the lower side of the disassembly gear (307) and the lower side of the sliding shaft (308). The disassembly gear (307) has a connecting hole in its center. A connecting shaft (309b) is fixedly inserted into the connecting hole on the upper side of the connecting plate (309a). The outer side of the connecting shaft (309b) and the disassembly gear (307) are connected. An annular connecting groove is formed between the inner edges, which allows the lifting connecting rod (305a) to be inserted. The disassembly gear (307) rotates around the lifting connecting rod (305a) through the connecting groove. A connecting groove (305a-1) is opened on the inner side of the lifting connecting rod (305a) on the upper side of the connecting shaft (309b). Several connecting blocks (306) corresponding to the lifting connecting rod (305a) are connected to the upper side of the connecting shaft (309b). The outer end of the connecting block (306) is inserted into the corresponding connecting groove (305a-1), so as to realize the synchronous movement of the disassembly gear (307) and the follower (305).

4. The valve body structure with a convenient valve core for disassembly and assembly as described in any one of claims 1 to 3, characterized in that: The auxiliary installation assembly (400) further includes a lifting support bracket (405) slidably connected to the movable bracket (402). The lifting support bracket (405) can reciprocate linearly in the height direction. The second transmission unit (403) includes an auxiliary screwing transmission sleeve (403e) sleeved on the auxiliary lifting transmission shaft (404b) and rotatably connected to the movable bracket (402). An auxiliary installation transmission component (403c) that cooperates with the auxiliary installation transmission part (201) is rotatably connected to the lifting support bracket (405). The auxiliary installation transmission component (403c) and the auxiliary screwing transmission sleeve (403e) are connected in a transmission connection.

5. The valve body structure with a convenient valve core for disassembly and assembly as described in claim 4, characterized in that: An auxiliary screw-in drive wheel (403a) is slidably connected to the auxiliary screw-in drive sleeve (403e). The auxiliary screw-in drive wheel (403a) is rotatably connected to the lifting support bracket (405). An auxiliary screw-in driven wheel (403d) is rotatably connected to the lifting support bracket (405). The auxiliary mounting transmission component (403c) is fixedly connected to the lower side of the auxiliary screw-in driven wheel (403d). The auxiliary screw-in drive wheel (403a) is connected to the auxiliary screw-in driven wheel (403d) via an auxiliary screw-in drive belt (403b).

6. The valve body structure with a convenient valve core for disassembly and assembly as described in claim 5, characterized in that: When the auxiliary lifting screw (406) rotates to move the valve core (200) upward, the lifting support bracket (405) can move upward synchronously with the valve core (200).

7. The valve body structure with a convenient valve core for disassembly and assembly as described in claim 6, characterized in that: The movable bracket (402) is also rotatably connected to a vertically arranged transmission screw (404a). The lifting support bracket (405) is threadedly connected to the transmission screw (404a). An auxiliary lifting driven gear (404g) is fixedly connected to the lower part of the transmission screw (404a). An auxiliary lifting transmission gear (404f) is fixedly connected to the auxiliary lifting transmission wheel (404e) on the lower side of the auxiliary lifting transmission belt (404c). The auxiliary lifting transmission gear (404f) and the auxiliary lifting driven gear (404g) cooperate with each other.

8. The valve body structure with a convenient valve core for disassembly and assembly as described in claim 4, characterized in that: The upper end of the movable bracket (402) has a through hole, the auxiliary screw-in transmission sleeve (403e) is coaxial with the through hole, the upper end of the auxiliary lifting transmission shaft (404b) has a non-circular first insertion groove (404b-1), and the upper end of the auxiliary screw-in transmission sleeve (403e) on the outer periphery of the auxiliary lifting transmission shaft (404b) has a non-circular second insertion groove (403e-1).

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