A three-way plug valve

Abstract

The present invention relates to the technical field of three-way plug valves, and specifically, to a three-way plug valve, comprising a plug valve body, a bushing embedded in the plug valve body, a plug block slidably connected in the bushing, the plug block tightly abutting against the inner wall of the plug valve body, the plug block is used to open and close the plug valve body, a positioning plate is detachably fixedly connected to the plug valve body, a positioning hoop is connected to the upper side of the positioning plate, the positioning hoop is used to limit the upper end of the plug block, a handle is connected to the upper side of the positioning hoop, the handle is fixedly connected to the upper end of the plug block, a lifting assembly for facilitating the separation of the plug valve body and the plug block is connected to the lower side of the plug valve body, and an adjusting assembly for relative rotational drive with the plug block is connected to one side of the lifting assembly. The above technical solution improves the maintenance efficiency and operation convenience of the equipment, and reduces the maintenance cost of the equipment and the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to the technical field of three-way plug valves, and in particular to a three-way plug valve. Background Art

[0002] As an important form of valve technology, the three-way plug valve originated in the late 19th century. With the advancement of industrialization, especially the rapid development of industries such as oil and natural gas, the demand for fluid control equipment has increased dramatically. The original plug valve was mainly used for fluid switch control of a single pipeline. With the advancement of technology and the diversification of production needs, the three-way plug valve came into being. It can realize the fluid switching and regulation of multiple pipelines in one valve body, significantly improving the flexibility and operation efficiency of the pipeline system. With the continuous development of industrial technology, the design of the three-way plug valve has gradually developed towards higher sealing, corrosion resistance, high temperature resistance and other directions to adapt to more complex and harsh working environments. Modern three-way plug valves are not only manually operated, but can also be equipped with electric or pneumatic actuators to achieve remote automatic control, providing reliable guarantee for automated production. In addition, the appearance of the plug valve is mostly a conical structure, which improves its sealing effect. In short, as an important fluid control device, the three-way plug valve has become an indispensable part of the industrial fluid control system with its unique structure and operation advantages.

[0003] In the prior art, there is a Chinese invention with the publication number "CN118482198A", a plug valve core assembly, some of whose features include a valve assembly and a valve core assembly, the valve assembly: a valve body, two sides of the valve body are symmetrically connected with docking tubes, a valve cover is installed above the valve body, a plug block is arranged in the valve body, the plug block is used to open and close the valve body, a movable part arranged in the valve body, which is used to move the position of the plug block when it rotates, and a locking part arranged in the valve body, which is used to lock and limit the plug block.

[0004] In the above technical design, the instructions are attached Figure 1It can be seen that the rotation of the plug block depends on the driving of the movable parts. The plug block adjusts the valve core assembly by moving up and down, thereby preventing the valve from getting stuck during use. However, this design exposes some technical problems in practical applications: First, the cooperation between the tooth plate 1 and the tooth plate 2 in the movable parts limits the rotation direction of the plug block during operation due to the design of the appearance characteristics. Due to the existence of this limit, the plug block can only rotate in a single direction, which makes the opening and closing adjustment of the valve body slow and inflexible in actual use, especially in the application of the plug valve body, the flow rate or flow direction cannot be adjusted quickly and effectively, affecting the operating efficiency of the system; secondly, one of the core functions of the plug valve is its sealing. However, due to the above-mentioned technology, the plug block will increase the contact with the inner wall of the valve body when rotating, which leads to greater friction. This friction not only increases the wear between the plug block and the valve body, but also gradually creates a gap between the two. As the gap increases, the sealing effect of the valve is no longer perfect, which in turn affects the normal control of the fluid. At the same time, the accumulation of wear and tear has led to a significant shortening of the equipment's maintenance cycle, and the maintenance cost has also increased accordingly, bringing more maintenance burdens and economic pressure to the company. Summary of the invention

[0005] The invention provides a three-way plug valve, which improves the maintenance efficiency and operation convenience of equipment and reduces the maintenance cost of equipment and the labor intensity of workers.

[0006] The technical solution of the present invention is as follows:

[0007] A three-way plug valve comprises a plug valve body;

[0008] The plug valve body is embedded with a bushing, and a plug block is slidably connected in the bushing. The plug block is tightly abutted against the inner wall of the plug valve body. The plug block is used to open and close the plug valve body. A positioning plate is detachably fixedly connected to the plug valve body. A positioning hoop is connected to the upper side of the positioning plate. The positioning hoop is used to limit the upper end of the plug block. A handle is connected to the upper side of the positioning hoop, and the handle is fixedly connected to the upper end of the plug block.

[0009] A lifting assembly for facilitating the separation of the plug valve body and the plug block is connected to the lower side of the plug valve body;

[0010] One side of the jacking component is connected with an adjusting component which is driven to rotate relative to the cock block.

[0011] The lifting assembly includes a clamping sleeve, which is embedded in the inner wall of the lower side of the plug valve body, a bearing seat is slidably connected in the clamping sleeve, a transmission plate is fixedly connected in the bearing seat, a first embedding block and a second embedding block that engage with each other are fixedly connected to the lower side of the plug block and the upper side of the transmission plate respectively, an adjusting bolt is detachably rotatably connected to the lower side of the transmission plate, and the adjusting bolt is threadedly connected to the lower side of the plug valve body.

[0012] Furthermore, an oil pipe is fixedly connected to the outside of the plug valve body, and the oil pipe is used to lubricate the transmission between the plug valve body and the plug block.

[0013] Furthermore, a clamping sleeve is fixedly connected to the outer side wall of the plug valve body, and the clamping sleeve is used to limit the position of the adjusting bolt.

[0014] Further, the adjustment assembly includes a first gear and a second gear, the first gear is fixedly connected to the transmission plate, the second gear is rotatably connected to the clamping sleeve, and the first gear meshes with the second gear when moving in the direction of the second gear;

[0015] A linkage column is fixedly connected to the second gear, and the linkage column is rotatably connected to the inner wall of the plug valve body. One end of the linkage column facing the outer side of the plug valve body is connected to a driving component for driving the second gear to rotate.

[0016] Further, the driving assembly includes a driving gear, the driving gear is rotatably connected to the outer wall of the plug valve body, the driving gear is coaxially fixedly connected to a first synchronous wheel on the side facing the plug valve body, the lower side of the first synchronous wheel is connected to a second synchronous wheel, the second synchronous wheel is fixedly connected to an end of a linkage column facing the outer side of the plug valve body, and a synchronous belt is meshed on the first synchronous wheel and the second synchronous wheel;

[0017] A linkage rack is meshed on one side of the driving gear, and a limit plate is fixedly connected to the upper side of the linkage rack. Two limit columns are fixedly connected to the limit plate, and each of the limit columns is slidably connected to a limit block, and each of the limit blocks is fixedly connected to the outer side wall of the plug valve body;

[0018] A bearing plate is hinged on the limiting plate, and a force block is hinged on one end of the bearing plate away from the limiting plate. The force block is fixedly connected to the outer side wall of the plug valve body.

[0019] Furthermore, both upper and lower ends of the force block are threadedly connected with force rods.

[0020] Furthermore, the upper and lower outer side walls of the plug valve body are respectively detachably fixedly connected with a first protective sleeve and a second protective sleeve.

[0021] The beneficial effects of the present invention are:

[0022] The design of the adjustment component and the lifting component in the equipment plays an important role, significantly improving the maintenance efficiency and operational convenience of the equipment. The adjustment component optimizes the matching state of the plug valve body and the plug block by accurately adjusting the relative position between the first fitting block and the second fitting block, avoiding jamming or other fault problems between the two. When a problem occurs, the adjustment component can quickly improve the matching of the two through fine-tuning, facilitate the separation of the plug valve body and the plug block, and thus greatly simplify the troubleshooting process. This not only reduces the time required for maintenance, but also reduces the physical exertion of workers during operation;

[0023] The lifting assembly precisely adjusts the relative position between the plug block and the plug valve body by moving the transmission plate up and down. This process ensures that the plug block can be separated from the plug valve body more smoothly, providing greater convenience for maintenance work. The design of the lifting assembly is not limited by the direction of rotation. Whether it is forward or reverse, it can accurately adjust the gap and position between the two, making equipment maintenance more efficient and reducing the difficulties that workers may encounter during operation;

[0024] In addition, the independent working state of the adjustment component and the lifting component further enhances the safety and stability of the equipment. Under normal working conditions, the adjustment component will not interfere with the normal operation of the plug block, thus avoiding problems such as water leakage or shutdown caused by misoperation or inadvertent touching of the adjustment component. The design of the lifting component also ensures that the matching state of the equipment can be accurately adjusted in any operating direction, reducing failures caused by improper operating direction;

[0025] Precise adjustment of the adjustment components not only improves the working efficiency of the equipment, but also increases its service life and reduces maintenance costs. The optimization of the lifting components makes the equipment run more smoothly and reduces the frequency of maintenance. Ultimately, these design improvements significantly improve the operating efficiency and work experience of workers, make equipment maintenance work more efficient and safe, and provide a solid guarantee for the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Figure 1 It is an enlarged schematic diagram of the prior art;

[0028] Figure 2 It is a schematic diagram of the present invention;

[0029] Figure 3 It is a partial cross-sectional enlarged schematic diagram of the present invention;

[0030] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0031] Figure 5 for Figure 3 A magnified schematic diagram of B;

[0032] Figure 6 It is a partial enlarged schematic diagram of the present invention.

[0033] In the figure: 11, plug valve body; 12, bushing; 13, plug block; 14, positioning plate; 15, positioning hoop; 16, handle; 21, clamping sleeve; 22, bearing seat; 23, transmission plate; 24, first interlocking block; 25, second interlocking block; 26, adjusting bolt; 27, oil pipe; 28, ferrule; 31, first gear; 32, second gear; 33, linkage column; 41, driving gear; 42, first synchronous wheel; 421, synchronous belt; 43, second synchronous wheel; 44, linkage rack; 45, limit plate; 46, limit column; 47, limit block; 48, bearing plate; 49, force block; 410, force rod; 51, first protective sleeve; 52, second protective sleeve. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example

[0036] like Figure 2~Figure 6 As shown, this embodiment provides a three-way plug valve, including a plug valve body 11;

[0037] The bushing 12 is embedded in the plug valve body 11, the plug block 13 is slidably connected in the bushing 12, the plug block 13 is tightly abutted against the inner wall of the plug valve body 11, the plug block 13 is used to open and close the plug valve body 11, the positioning plate 14 is detachably fixedly connected to the plug valve body 11, the positioning hoop 15 is connected to the upper side of the positioning plate 14, the positioning hoop 15 is used to limit the upper end of the plug block 13, the handle 16 is connected to the upper side of the positioning hoop 15, and the handle 16 is fixedly connected to the upper end of the plug block 13;

[0038] A lifting assembly for facilitating the separation of the plug valve body 11 from the plug block 13 is connected to the lower side of the plug valve body 11;

[0039] An adjusting assembly that is driven to rotate relative to the cock block 13 is connected to one side of the lifting assembly;

[0040] The design of the adjustment component and the lifting component in the equipment plays an important role, significantly improving the maintenance efficiency and operational convenience of the equipment. The adjustment component optimizes the matching state of the plug valve body 11 and the plug block 13 by accurately adjusting the relative position between the first interlocking block 24 and the second interlocking block 25, avoiding jamming or other fault problems between the two. When a problem occurs, the adjustment component can quickly improve the matching between the two through fine-tuning, facilitate the separation of the plug valve body 11 and the plug block 13, and thus greatly simplify the troubleshooting process. This not only reduces the time required for maintenance, but also reduces the physical exertion of workers during operation;

[0041] The lifting assembly precisely adjusts the relative position between the plug block 13 and the plug valve body 11 by moving the transmission plate 23 up and down. This process ensures that the plug block 13 can be separated from the plug valve body 11 more smoothly, providing greater convenience for maintenance work. The design of the lifting assembly is not limited by the direction of rotation. Whether it is forward or reverse, it can accurately adjust the gap and position between the two, making equipment maintenance more efficient and reducing the difficulties that workers may encounter during operation;

[0042] In addition, the independent working state of the adjustment component and the lifting component further enhances the safety and stability of the equipment. Under normal working conditions, the adjustment component will not interfere with the normal operation of the plug block 13, thereby avoiding problems such as water leakage or shutdown caused by misoperation or inadvertent touching of the adjustment component. The design of the lifting component also ensures that the matching state of the equipment can be accurately adjusted in any operating direction, reducing failures caused by improper operating direction;

[0043] Precise adjustment of the adjustment components not only improves the working efficiency of the equipment, but also increases its service life and reduces maintenance costs. The optimization of the lifting components makes the equipment run more smoothly and reduces the frequency of maintenance. Ultimately, these design improvements significantly improve the operating efficiency and work experience of workers, make equipment maintenance work more efficient and safe, and provide a solid guarantee for the reliability of the equipment.

[0044] like Figure 3~Figure 5 As shown, the lifting assembly includes a clamping sleeve 21, which is embedded on the inner wall of the lower side of the plug valve body 11, a bearing seat 22 is slidably connected in the clamping sleeve 21, a transmission plate 23 is fixedly connected in the bearing seat 22, a first embedding block 24 and a second embedding block 25 that engage with each other are respectively fixedly connected to the lower side of the plug block 13 and the upper side of the transmission plate 23, an adjusting bolt 26 is detachably fixedly connected to the lower side of the transmission plate 23, and the adjusting bolt 26 is threadedly connected to the lower side of the plug valve body 11;

[0045] The function of the adjusting bolt 26 is to change the relative position between the plug block 13 and the plug valve body 11 by moving the transmission plate 23 up and down. In this process, the relative rotation between the first engaging block 24 and the second engaging block 25 enables the plug block 13 to be precisely adjusted up and down according to the movement of the transmission plate 23. This adjustment makes it easier to separate the plug block 13 from the plug valve body 11, thereby providing greater convenience for maintenance and repair work;

[0046] Through this precise adjustment method, the lifting assembly can effectively improve the matching state between the plug valve body 11 and the plug block 13. When the matching state between the plug block 13 and the plug valve body 11 is optimized, the separation of the plug valve body and the plug block becomes smoother and more convenient. For workers, the separation process becomes easier, reducing the need to apply excessive force, greatly reducing the difficulty of equipment maintenance;

[0047] In addition, the design advantage of this lifting assembly is that it is not limited by the direction of rotation, and the matching state of the plug valve body 11 and the plug block 13 can be adjusted in any direction. Whether in the forward or reverse direction, the lifting assembly can accurately adjust the gap and position between the two, making the maintenance of the equipment more efficient and reliable. Through this design, the operability and practicality of the equipment have been significantly improved, and it also provides a guarantee for the long-term stable operation of the equipment.

[0048] like Figure 3 As shown, the oil pipe 27 is fixedly connected to the outside of the plug valve body 11, and the oil pipe 27 is used to lubricate the transmission of the plug valve body 11 and the plug block 13;

[0049] When the plug block 13 moves upward, resulting in a gap between the plug valve body 11 and the plug block 13, the worker can inject oil into the gap through the oil pipe 27 to reduce friction and make the transmission between the plug valve body 11 and the plug block 13 smoother. This can reduce wear and prevent jamming or excessive friction, thereby improving the efficiency of the equipment and extending its service life. In addition, the worker does not need to completely remove the plug block 13, which reduces the labor of the worker.

[0050] like Figure 6 As shown, the sleeve 28 is fixedly connected to the outer wall of the plug valve body 11, and the sleeve 28 is used to limit the adjusting bolt 26;

[0051] When the plug valve body 11 and the plug block 13 are working normally, the adjusting bolt 26 does not need to be used. In order to prevent the adjusting bolt 26 from being lost, it is designed to be clamped in the clamping sleeve 28, thereby ensuring that the adjusting bolt 26 will not fall off and always remain in a safe position. In this way, when the equipment needs to be repaired, the worker can quickly find and use the adjusting bolt 26 for troubleshooting, avoiding maintenance delays caused by lost parts. This design not only improves the maintenance efficiency of the equipment, but also reduces the risk of lost parts, helping to ensure that the maintenance work is carried out efficiently and smoothly.

[0052] like Figure 3~Figure 6 As shown, the adjustment assembly includes a first gear 31 and a second gear 32. The first gear 31 is fixedly connected to the transmission plate 23, and the second gear 32 is rotatably connected to the clamping sleeve 21. When the first gear 31 moves toward the second gear 32, it meshes with the second gear 32.

[0053] The linkage column 33 is fixedly connected to the second gear 32, the linkage column 33 is rotatably connected to the inner wall of the plug valve body 11, and one end of the linkage column 33 facing the outer side of the plug valve body 11 is connected to a driving component for driving the second gear 32 to rotate;

[0054] The adjustment component plays a vital role in the equipment. It precisely adjusts the relative positions of the first fitting block 24 and the second fitting block 25 to ensure that the plug valve body 11 and the plug block 13 can cooperate stably and effectively under normal working conditions. When the plug valve body 11 and the plug block 13 become stuck or have other faults, the adjustment component can improve the cooperation between the two through precise adjustment, thereby conveniently separating the plug valve body 11 and the plug block 13. This convenient separation method greatly reduces the difficulty of maintenance, not only reducing the time for workers to troubleshoot, but also effectively reducing the labor intensity of workers;

[0055] In addition, when the plug valve body 11 and the plug block 13 are in normal working state, the adjustment component and the plug block 13 are in independent working state. This means that the adjustment component will not interfere with the normal operation of the plug block 13, and the equipment will not leak or stop working due to misoperation or accidental contact of the adjustment component. This design makes the operation of the equipment more stable and safe, and workers can concentrate on other work, reducing unnecessary operation risks, thereby improving work efficiency;

[0056] Through this design, the use of adjustment components not only simplifies the maintenance process, but also effectively improves the reliability of the equipment and the stability of long-term operation. Whether it is equipment troubleshooting or daily operation, it can be completed more efficiently and conveniently, greatly improving the workers' work experience and operating safety.

[0057] like Figure 3~Figure 6 As shown, the driving assembly includes a driving gear 41, which is rotatably connected to the outer wall of the plug valve body 11, and the driving gear 41 is coaxially fixedly connected to the first synchronous wheel 42 on the side facing the plug valve body 11, and the second synchronous wheel 43 is connected to the lower side of the first synchronous wheel 42, and the second synchronous wheel 43 is fixedly connected to the end of the linkage column 33 facing the outer side of the plug valve body 11, and the synchronous belt 421 is meshed with the first synchronous wheel 42 and the second synchronous wheel 43;

[0058] One side of the driving gear 41 is meshed with the linkage rack 44, the limit plate 45 is fixedly connected to the upper side of the linkage rack 44, two limit posts 46 are fixedly connected to the limit plate 45, each limit block 47 is slidably connected to each limit post 46, and each limit block 47 is fixedly connected to the outer wall of the plug valve body 11;

[0059] The limiting plate 45 is hinged to the bearing plate 48, and one end of the bearing plate 48 away from the limiting plate 45 is hinged to the force block 49, and the force block 49 is fixedly connected to the outer wall of the plug valve body 11;

[0060] In some cases, the plug valve body 11 and the plug block 13 may be stuck and the plug block 13 cannot be driven to rotate by the conventional handle 16. In order to deal with this situation, the worker can use the force block 49 to indirectly drive the rotation of the linkage column 33, thereby driving the first gear 31 to engage with the second gear 32 and promote the rotation of the first gear 31. The rotation of the first gear 31 will cause the first interlocking block 24 and the second interlocking block 25 that are interlocked with each other to move relative to each other, thereby realizing the rotation of the plug block 13. At this time, the second interlocking block 25 drives the plug block 13 and the plug valve body 11 to rotate relative to each other through the interlocking connection with the first interlocking block 24;

[0061] However, when the blocking resistance between the plug valve body 11 and the plug block 13 is too large, the rotation of the second engaging block 25 will push one side of the first engaging block 24, causing it to generate an upward force, which causes the plug block 13 to rise in a spiral manner. Since the outer side of the plug block 13 is a conical structure, when the plug block 13 moves upward, a gap will be formed between it and the inner wall of the plug valve body 11. At this time, the plug block 13 can be more easily separated from the plug valve body 11, thereby providing workers with a more convenient maintenance space and facilitating the inspection and replacement of the plug block 13;

[0062] In addition, workers can also adjust the operating sequence of the lifting assembly and the adjusting assembly according to actual work needs, and flexibly adjust the direction of the force application. In this way, workers can optimize the angle and direction of force application according to specific circumstances, further improve work efficiency, and reduce operational difficulty and potential risks. In this way, workers can control the force block 49 more efficiently, thereby improving the efficiency and accuracy of the entire maintenance process.

[0063] like Figure 3~Figure 6 As shown, the force rod 410 can be threadedly connected to the upper and lower ends of the force block 49 respectively;

[0064] The force adding rod 410 can be connected to the force adding block 49 at both ends, so that the worker can apply force to the force adding block 49 at different angles. This design improves the worker's operational flexibility, allowing them to adjust the force adding direction according to actual needs, thereby optimizing the work effect. In this way, the worker can more easily control the force adding block 49, thereby improving work efficiency and reducing operational difficulty.

[0065] like Figure 2~Figure 6 As shown, the first protective sleeve 51 and the second protective sleeve 52 are respectively detachably fixedly connected to the outer side wall of the plug valve body 11;

[0066] Workers can conveniently inspect and maintain the parts by removing the first protective cover 51 and the second protective cover 52. The protective cover is used to protect the parts between the plug valve body 11 and the protective cover from external factors, and when maintenance is required, removing the protective cover makes the operation easier and more efficient. This design improves the convenience and safety of maintenance.

[0067] Working principle:

[0068] During normal operation, the plug block 13 performs opening and closing operations by closely contacting the inner wall of the plug valve body 11. The regulating components maintain independent operation to ensure that the two are not interfered with in normal working conditions;

[0069] When a fault occurs, if the plug block 13 and the plug valve body 11 are stuck or improperly matched, the adjustment component can quickly solve the problem of sticking by fine-tuning the relative position between the first interlocking block 24 and the second interlocking block 25, ensuring that the plug block 13 can be smoothly separated from the plug valve body 11. The up and down adjustment of the lifting component further optimizes the separation of the two;

[0070] The lubrication system provides lubrication between the plug block 13 and the plug valve body 11 through the oil pipe, which reduces friction, prolongs the life of the equipment, avoids disassembly of the plug block 13 for lubrication, and thus reduces the difficulty of maintenance;

[0071] The force block 49 and the driving assembly play an important role when the cock block 13 is stuck. The worker can adjust the direction of the force through the force block 49 to indirectly drive the movement of the cock block 13. This can effectively solve the problem of sticking and provide more maintenance space;

[0072] The first protective cover 51 and the second protective cover 52 are detachable to facilitate maintenance of the equipment, protect the equipment from external pollution, and improve work efficiency and safety;

[0073] The overall design enables the equipment to be maintained and repaired quickly and smoothly in normal operation and when a fault occurs, through the complementary effects of the adjustment components, jacking components, lubrication system, and force blocks 49. This not only improves the working efficiency of the equipment, but also reduces maintenance costs and ensures the long-term stable operation of the equipment.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-way plug valve, comprising a plug valve body (11), characterized in that; The plug valve body (11) is embedded with a bushing (12), a plug block (13) is slidably connected in the bushing (12), the plug block (13) is tightly abutted against the inner wall of the plug valve body (11), the plug block (13) is used to open and close the plug valve body (11), a retaining plate (14) is detachably fixedly connected to the plug valve body (11), a retaining hoop (15) is connected to the upper side of the retaining plate (14), the retaining hoop (15) is used to limit the upper end of the plug block (13), a handle (16) is connected to the upper side of the retaining hoop (15), and the handle (16) is fixedly connected to the upper end of the plug block (13); A lifting assembly for facilitating separation of the plug valve body (11) and the plug block (13) is connected to the lower side of the plug valve body (11); One side of the lifting assembly is connected to an adjusting assembly that is driven to rotate relative to the cock block (13); The lifting assembly comprises a clamping sleeve (21), the clamping sleeve (21) being engaged with the inner wall of the lower side of the plug valve body (11), a bearing seat (22) being slidably connected inside the clamping sleeve (21), a transmission plate (23) being fixedly connected inside the bearing seat (22), a first engaging block (24) and a second engaging block (25) being fixedly connected to each other on the lower side of the plug block (13) and the upper side of the transmission plate (23), respectively, an adjusting bolt (26) being detachably rotatably connected to the lower side of the transmission plate (23), and the adjusting bolt (26) being threadedly connected to the lower side of the plug valve body (11).

2. The three-way plug valve according to claim 1, characterized in that: An oil pipe (27) is fixedly connected to the outside of the plug valve body (11), and the oil pipe (27) is used to lubricate the transmission between the plug valve body (11) and the plug block (13).

3. The three-way plug valve according to claim 1, characterized in that: A clamping sleeve (28) is fixedly connected to the outer wall of the plug valve body (11), and the clamping sleeve (28) is used to limit the position of the adjusting bolt (26).

4. The three-way plug valve according to claim 1, characterized in that: The adjustment assembly comprises a first gear (31) and a second gear (32), the first gear (31) being fixedly connected to the transmission plate (23), the second gear (32) being rotatably connected to the clamping sleeve (21), and the first gear (31) being meshed with the second gear (32) when moving in the direction of the second gear (32); A linkage column (33) is fixedly connected to the second gear (32), and the linkage column (33) is rotatably connected to the inner wall of the plug valve body (11). One end of the linkage column (33) facing the outside of the plug valve body (11) is connected to a drive assembly for driving the second gear (32) to rotate.

5. The three-way plug valve according to claim 4, characterized in that: The driving assembly comprises a driving gear (41), the driving gear (41) being rotatably connected to the outer wall of the plug valve body (11), a first synchronous wheel (42) being coaxially fixedly connected to the driving gear (41) on the side facing the plug valve body (11), a second synchronous wheel (43) being connected to the lower side of the first synchronous wheel (42), the second synchronous wheel (43) being fixedly connected to an end of the linkage column (33) facing the outer side of the plug valve body (11), and a synchronous belt (421) being meshed on the first synchronous wheel (42) and the second synchronous wheel (43); A linkage rack (44) is meshed with one side of the driving gear (41); a limit plate (45) is fixedly connected to the upper side of the linkage rack (44); two limit columns (46) are fixedly connected to the limit plate (45); each of the limit columns (46) is slidably connected to a limit block (47); each of the limit blocks (47) is fixedly connected to the outer wall of the plug valve body (11); A bearing plate (48) is hingedly connected to the limit plate (45), and a force block (49) is hingedly connected to one end of the bearing plate (48) away from the limit plate (45), and the force block (49) is fixedly connected to the outer side wall of the plug valve body (11).

6. The three-way plug valve according to claim 5, characterized in that: The upper and lower ends of the force adding block (49) are both threadedly connected with force adding rods (410).

7. The three-way plug valve according to claim 1, characterized in that: The upper and lower outer walls of the plug valve body (11) are respectively detachably fixedly connected with a first protective sleeve (51) and a second protective sleeve (52).

Images