Anti-abrasion semi-ball valve

Abstract

The invention relates to the technical field of wire machining, in particular to an anti-abrasion semi-ball valve which comprises a valve body, a valve cover, a valve element, an adjusting mechanism, a control mechanism and a limiting mechanism, three water outlet pipes and a mounting pipe are arranged on the valve body, a sliding groove is formed in the inner surface of the valve body, and a valve seat and a transmission plate are slidably connected into the sliding groove; a plurality of springs are arranged between the valve seat and the transmission plate, a plurality of first spring columns are fixedly arranged on the face, close to the valve seat, of the transmission plate, and a second spring column is fixedly arranged at the end, close to the transmission plate, of the valve seat. The valve cover is in bolted connection with the top of the mounting pipe, the valve element is rotationally arranged in the valve body, and the outer surface of the valve element abuts against one end of a valve seat. When the valve element rotates to control opening and closing of the valve, the valve seat can slide in the sliding groove and keep being tightly attached to the valve element under the action of the spring, the sealing effect of the valve is guaranteed, and meanwhile large abrasion caused by hard sealing of the valve element and the valve seat is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hemispherical valves, and in particular to an anti-wear hemispherical valve. Background Art

[0002] The semi-ball valve is a relatively new type of ball valve. It is generally composed of a valve body, an upper cover, a valve seat, a valve stem, a semi-valve ball and a handle. The semi-valve ball is controlled by rotating the handle to rotate around the center line of the valve body to open and close the valve. The valve core of the semi-ball valve is light in weight and has the characteristics of small opening and closing torque, making the overall light, so it can be designed with a larger diameter.

[0003] At present, the Chinese utility model patent application with the publication date of August 2, 2022 and the publication number of CN217108301U proposes a double eccentric hemispherical valve, including a valve body, a through hole is provided at the bottom of the valve body, a blocking device is arranged in the through hole, the blocking device includes a connecting plate and a blocking block, a sealing gasket is installed at the upper end of the connecting plate, a blocking block is installed at the upper end of the connecting plate, bolts are symmetrically installed in the connecting plate, a threaded groove is provided at the position corresponding to the bolt at the bottom of the valve body, a bottom block is installed at the bottom of the valve body, a sphere is arranged in the valve body, a rotating shaft is installed at the upper and lower ends of the sphere, the upper rotating shaft passes through the valve body to connect the control mechanism, the lower rotating shaft is rotatably connected to the bottom block, a circular ring frame is sleeved on the outer surface of the lower rotating shaft, and the circular ring frame is rotatably connected to the lower rotating shaft, and an annular rack is installed on the inner wall of the circular ring frame. The utility model drives the cleaning device to rotate by the rotating block to clean up the residual sediment at the bottom of the valve body. When the cleaning layer is full of residual sediment, the blocking block is removed, the cleaning layer is torn off by Velcro, and a new cleaning layer is installed to facilitate the next cleaning and extend the service life of the valve body.

[0004] A double eccentric hemispheric valve in the related technology adopts a hard seal between the ball and the valve body. When the valve is in a closed state, it is necessary to ensure that a large pressure is generated between the contact surfaces of the ball and the valve body to ensure the sealing effect. When closing and opening the valve, the ball and the valve body will produce a large mutual wear, which reduces the sealing of the valve and is not conducive to the long-term use of the valve. Summary of the invention

[0005] In order to reduce the wear rate of the sealing surface of a hemispherical valve, the present invention provides an anti-wear hemispherical valve.

[0006] The present invention provides an anti-wear hemispherical valve, which comprises a valve body, a valve cover, a valve core, an adjusting mechanism, a control mechanism and a limiting mechanism, wherein three water outlet pipes are arranged on the valve body, a mounting pipe is also arranged on the top of the valve body, the water outlet pipes and the mounting pipe are integrally formed with the valve body, a slide groove is provided on the inner surface of the valve body corresponding to each water outlet pipe, a valve seat and a transmission plate are slidably connected inside the slide groove, one side of the transmission plate abuts against the valve body, a plurality of springs are arranged between the valve seat and the transmission plate, a plurality of first spring columns are fixedly arranged on a side of the transmission plate close to the valve seat, a second spring column is fixedly arranged on an end of the valve seat close to the transmission plate, one end of the spring is sleeved on the first spring column and abuts against the transmission plate, and the other end of the spring is sleeved on the second spring column and abuts against the valve seat;

[0007] The valve cover bolts are connected to the top of the mounting tube, the valve core is rotatably arranged inside the valve body, the outer surface of the valve core abuts against an end of a valve seat away from the transmission plate, the adjusting mechanism is used to adjust the position of the transmission plate inside the slide groove, the control mechanism is used to install the valve core and control the rotation of the valve core, and the limiting mechanism is used to prevent the valve seat that is not in contact with the valve core from sliding out of the slide groove.

[0008] When the valve needs to be opened and closed, the rotation of the valve core can be controlled by the control mechanism. When one water outlet pipe is closed, the valve core rotates and contacts the corresponding valve seat. The valve core will apply a horizontal component force to the valve seat to make the valve seat slide toward the transmission plate inside the slide groove. The valve seat and the transmission plate compress the spring. When the valve core rotates to face the valve seat, each spring applies pressure to the valve seat to make the valve seat and the outer surface of the valve core tightly fit to form a seal. This water outlet pipe is completely closed, and the other two water outlet pipes are connected to each other. When the closed water outlet pipe needs to be opened, the valve core is controlled to rotate, and the valve core is gradually separated from the valve seat until the water outlet pipe is fully opened. In the process of opening and closing the valve, the greater wear caused by the hard seal between the valve core and the valve seat is avoided. After the contact surface between the valve core and the valve seat is worn, the spring can keep the valve seat in contact with the valve core to form an effective seal, which can extend the service life of the valve.

[0009] The above-mentioned technical scheme in the embodiment of the present application has at least the following technical effects: when the valve core rotates to control the opening and closing of the valve, the valve seat can slide inside the slide groove and remain in close contact with the valve core under the action of the spring, thereby ensuring the sealing effect of the valve while avoiding the greater wear caused by the hard seal between the valve core and the valve seat.

[0010] In some embodiments, a first sealing groove is formed on the outer circumferential surface of the valve seat, a second sealing groove is formed on the inner circumferential surface of the valve seat, and first sealing rings are disposed inside the first sealing groove and the second sealing groove.

[0011] In some embodiments, the adjustment mechanism includes an adjusting ring and a transmission shaft, the inner circumference of the adjusting ring is provided with a thread, the adjusting ring is sleeved on the water outlet pipe and is threadedly connected to the outer circumference of the water outlet pipe, a contact groove is provided on the side of the adjusting ring close to the transmission plate, one end of the transmission shaft is hemispherical and abuts against the adjusting ring through the abutment groove, the other end of the transmission shaft passes through the valve body and is fixedly connected to the transmission plate, the transmission shaft is slidably connected to the valve body, and a plurality of handles are fixedly provided on the outer circumference of the adjusting ring.

[0012] In some embodiments, an abutment ring is provided on the outer circumferential surface of the valve seat, and the abutment ring is integrally formed with the valve seat. The limiting mechanism includes a limiting ring, and the limiting ring is bolted to the inner circumferential surface of the valve body, and the abutment ring abuts against one side of the limiting ring.

[0013] In some embodiments, the control mechanism includes a valve stem, an upper connecting ring and a support assembly. A mounting hole is opened on the valve cover, and a second sealing ring and a positioning ring are arranged inside the mounting hole. The valve stem passes through the mounting hole and is rotatably connected to the valve cover, the second sealing ring and the positioning ring. The bottom of the positioning ring abuts against the valve stem, and the upper connecting ring is bolted to the top of the valve core. The bottom of the valve stem is passed through the upper connecting ring and is keyed to the upper connecting ring. The support assembly is used to install and support the bottom of the valve core.

[0014] In some embodiments, the support assembly includes a lower connecting ring, a support column, a sewage pipe and a sealing cover. The bottom of the support column is rotatably connected to the inside of the sewage pipe, the lower connecting ring is sleeved on the top of the support column and is keyed to the support column, the bottom of the valve core is bolted to the lower connecting ring, and the sealing cover is used to seal the sewage pipe.

[0015] In some embodiments, the blocking cover is bolted to the bottom of the sewage pipe, the bottom of the support column and the top of the blocking cover are both provided with arc surfaces, and the bottom of the support column abuts against the top of the blocking cover.

[0016] In some embodiments, a plurality of scrapers are fixedly disposed on the bottom of the lower connecting ring.

[0017] In some embodiments, a reinforcing rib is provided on the inner surface of the valve core, and the reinforcing rib is integrally formed with the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 The overall structure of an anti-wear hemispherical valve provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0020] Figure 2 The overall structure of an anti-wear hemispherical valve provided in the embodiment of the present application is schematically shown. Figure 2 ;

[0021] Figure 3 A cross-sectional view of an anti-wear hemispherical valve provided in an embodiment of the present application;

[0022] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0023] Figure 5 for Figure 3 Enlarged view of part B;

[0024] Figure 6 for Figure 3 Enlarged view of part C in the middle;

[0025] Figure 7 Schematic diagram of the overall structure of the adjustment ring;

[0026] Figure 8 The overall structure of the valve core is shown in Figure 1. Figure 1 ;

[0027] Fig. 9 The overall structure of the valve core is shown in Figure 1. Figure 2 .

[0028] Among them, the reference numerals in the figure are:

[0029] 1. Valve body; 11. Water outlet pipe; 12. Mounting pipe; 13. Slide groove; 131. Valve seat; 1311. First sealing groove; 1312. Second sealing groove; 1313. First sealing ring; 1314. Abutment ring; 132. Transmission plate; 133. Spring; 134. First spring column; 135. Second spring column; 2. Valve cover; 21. Mounting hole; 211. Second sealing ring; 212. Positioning ring; 3. Valve core; 31. Reinforcement rib; 41. Adjustment ring; 411. Abutment groove; 412. Handle; 42. Transmission shaft; 51. Valve stem; 52. Upper connecting ring; 531. Lower connecting ring; 532. Support column; 533. Drain pipe; 534. Blocking cover; 61. Limiting ring; 7. Scraper. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0032] With regard to the prior art, since a hard seal is adopted between the ball and the valve body, when the valve is in a closed state, a large pressure needs to be generated between the contact surfaces of the ball and the valve body to ensure the sealing effect. When closing and opening the valve, the ball and the valve body will produce a large mutual wear, which reduces the sealing performance of the valve and is not conducive to the long-term use of the valve.

[0033] Based on this, in order to reduce the wear rate of the sealing surface of the hemispherical valve, the embodiment of the present application provides the following solution.

[0034] Please also read Figures 1 to 9 , the embodiment of the present application provides an anti-wear hemispherical valve, the anti-wear hemispherical valve comprises a valve body 1, a valve cover 2, a valve core 3, an adjustment mechanism, a control mechanism and a limit mechanism;

[0035] Please also read Figures 1 to 7 , three water outlet pipes 11 are arranged on the valve body 1, and a mounting pipe 12 is also arranged on the top of the valve body 1. The water outlet pipes 11 and the mounting pipe 12 are integrally formed with the valve body 1. A slide groove 13 is opened on the inner surface of the valve body 1 corresponding to each water outlet pipe 11. A valve seat 131 and a transmission plate 132 are slidably connected inside the slide groove 13. One side of the transmission plate 132 abuts against the valve body 1, and a plurality of springs 133 are arranged between the valve seat 131 and the transmission plate 132. A plurality of first spring columns 134 are fixedly arranged on a side of the transmission plate 132 close to the valve seat 131, and a second spring column 135 is fixedly arranged on one end of the valve seat 131 close to the transmission plate 132. One end of the spring 133 is sleeved on the first spring column 134 and abuts against the transmission plate 132, and the other end of the spring 133 is sleeved on the second spring column 135 and abuts against the valve seat 131;

[0036] The valve cover 2 is bolted to the top of the mounting tube 12, the valve core 3 is rotatably arranged inside the valve body 1, the outer surface of the valve core 3 abuts against an end of a valve seat 131 away from the transmission plate 132, the adjustment mechanism is used to adjust the position of the transmission plate 132 inside the slide groove 13, the control mechanism is used to install the valve core 3 and control the rotation of the valve core 3, and the limit mechanism is used to prevent the valve seat 131 that is not in contact with the valve core 3 from sliding out of the slide groove 13;

[0037] A first sealing groove 1311 is formed on the outer circumference of the valve seat 131, a second sealing groove 1312 is formed on the inner circumference of the valve seat 131, and a first sealing ring 1313 is disposed inside the first sealing groove 1311 and the second sealing groove 1312;

[0038] The adjusting mechanism includes an adjusting ring 41 and a transmission shaft 42. A thread is provided on the inner circumference of the adjusting ring 41. The adjusting ring 41 is sleeved on the water outlet pipe 11 and is threadedly connected to the outer circumference of the water outlet pipe 11. An abutting groove 411 is provided on the side of the adjusting ring 41 close to the transmission plate 132. One end of the transmission shaft 42 is hemispherical and abuts against the adjusting ring 41 through the abutting groove 411. The other end of the transmission shaft 42 passes through the valve body 1 and is fixedly connected to the transmission plate 132. The transmission shaft 42 is slidably connected to the valve body 1. A plurality of handles 412 are also fixedly provided on the outer circumference of the adjusting ring 41.

[0039] An abutment ring 1314 is provided on the outer circumference of the valve seat 131 , and the abutment ring 1314 is integrally formed with the valve seat 131 . The limiting mechanism includes a limiting ring 61 , and the limiting ring 61 is bolted to the inner circumference of the valve body 1 . The abutment ring 1314 abuts against one side of the limiting ring 61 .

[0040] As can be seen from the above, when producing the valve, the radius of the valve core 3 can be made slightly larger than the distance from its center to the sealing surface of the valve seat 131 to ensure that the valve seat 131 can be closely abutted against the valve core 3; when the valve needs to be opened and closed, the rotation of the valve core 3 can be controlled by the control mechanism. When one water outlet pipe 11 is closed, the valve core 3 rotates and contacts the corresponding valve seat 131. The valve core 3 will apply a horizontal component force to the valve seat 131 to make the valve seat 131 slide inside the slide groove 13 toward the transmission plate 132, and the valve seat 131 and the transmission plate 132 compress the spring 133. When the valve core 3 rotates to face the valve seat 131, each spring 133 applies pressure to the valve seat 131 so that the valve seat 131 and the outer surface of the valve core 3 are tightly attached to form a seal. The outlet pipe 11 is completely closed, and the other two outlet pipes 11 are connected to each other. When the closed outlet pipe 11 needs to be opened, the valve core 3 is controlled to rotate, and the valve core 3 is gradually separated from the valve seat 131 until the outlet pipe 11 is fully opened. At this time, the valve seat 131 is pressed by the spring 133. 3 is pushed down to slide to the initial position until the abutment ring 1314 abuts against the fixed ring and the valve seat 131 stops moving; the two first sealing rings 1313 can improve the sealing between the valve seat 131 and the valve body 1, and reduce the possibility of leakage of the internal fluid of the valve body 1 from the slide groove 13 during the sliding of the valve seat 131 in the slide groove 13; the staff can follow the above steps to make the valve core 3 block any one of the water outlet pipes 11 and connect the other two water outlet pipes 11, or rotate the valve core 3 to a position facing away from the water outlet pipe 11 in the middle through the control mechanism. At this time, the three water outlet pipes 11 are connected to each other. The staff can select the connection mode of the three water outlet pipes 11 according to the actual situation; in the process of opening and closing the valve, the greater wear caused by the hard seal of the valve core 3 and the valve seat 131 is avoided. After the contact surface of the valve core 3 and the valve seat 131 is worn, the spring 133 can keep the valve seat 131 in contact with the valve core 3 to form an effective seal, which can extend the service life of the valve;

[0041] After the valve has been used for a long time, the elastic force of the spring 133 may decrease, and the sealing surface of the valve core 3 and the valve seat 131 may also be excessively worn, resulting in a large gap between the two. The elastic force of the spring 133 can no longer maintain the close fit between the valve core 3 and the valve seat 131, and the valve may leak. At this time, the staff can adjust the elastic force of the spring 133 on the valve seat 131 through the adjustment mechanism; the staff can turn the adjustment ring 41 through the handle 412, and the adjustment ring 41 rotates and approaches the valve seat 131, and one end of the hemispherical shape of each transmission shaft 42 slides relative to the adjustment ring 41 in the abutment groove 411. As the adjustment ring 41 approaches the transmission plate 132, the adjustment ring 41 pushes each transmission shaft 42 to The transmission plate 132 moves in the direction close to the valve seat 131, and the transmission shaft 42 pushes the transmission plate 132 to move in the direction close to the valve seat 131 inside the slide groove 13. The valve seat 131 abuts against the valve core 3 and remains stationary. The transmission plate 132 and the valve seat 131 compress the spring 133, and the elastic force of the spring 133 on the valve seat 131 increases, and the pressure applied by the valve seat 131 on the valve core 3 increases, thereby improving the sealing between the valve seat 131 and the valve core 3 and re-forming an effective seal. In this process, there is no need to disassemble and open the valve, nor to stop the flow of the fluid in the pipeline, which can make it more convenient for the staff to inspect and repair the valve. The adjustment mechanism can enable the valve to continue to maintain its sealing after long-term work, further improving the service life of the valve.

[0042] In some embodiments, please refer to Figures 1 to 9 The control mechanism includes a valve stem 51, an upper connecting ring 52 and a supporting assembly. The valve cover 2 is provided with a mounting hole 21. A second sealing ring 211 and a positioning ring 212 are arranged inside the mounting hole 21. The valve stem 51 passes through the mounting hole 21 and is rotatably connected with the valve cover 2, the second sealing ring 211 and the positioning ring 212. The bottom of the positioning ring 212 abuts against the valve stem 51. The upper connecting ring 52 is bolted to the top of the valve core 3. The bottom of the valve stem 51 is passed through the upper connecting ring 52 and is keyed to the upper connecting ring 52. The supporting assembly is used to install and support the bottom of the valve core 3.

[0043] The support assembly includes a lower connecting ring 531, a supporting column 532, a sewage pipe 533 and a sealing cover 534. The bottom of the supporting column 532 is rotatably connected to the inside of the sewage pipe 533. The lower connecting ring 531 is sleeved on the top of the supporting column 532 and is keyed to the supporting column 532. The bottom of the valve core 3 is bolted to the lower connecting ring 531. The sealing cover 534 is used to seal the sewage pipe 533. The sealing cover 534 is bolted to the bottom of the sewage pipe 533. The bottom of the supporting column 532 and the top of the sealing cover 534 are both provided with arc surfaces, and the bottom of the supporting column 532 abuts against the top of the sealing cover 534.

[0044] With such arrangement, when installing the valve core 3 and the valve stem 51, first remove the valve cover 2 from the mounting tube 12, then sleeve and connect the lower connecting ring 531 to the top of the support column 532, put the valve core 3 into the valve body 1 through the mounting tube 12, place the bottom of the valve core 3 on the lower connecting ring 531, then connect the valve core 3 and the lower connecting ring 531 by bolts, then clamp the upper connecting ring 52 on the top of the valve core 3 and connect the valve core 3 and the upper connecting ring 52 by bolts, then insert the bottom of the valve stem 51 into the upper connecting ring 52 and connect, then bolt the valve cover 2 to the top of the mounting tube 12 and let the valve core 3 pass through the mounting hole 2 1; when the valve core 3 needs to be rotated, the top of the valve stem 51 is rotated, and the valve stem 51 drives the valve core 3 to rotate through the upper connecting ring 52, and the valve core 3 drives the support column 532 to rotate through the lower connecting ring 531. The bottom of the support column 532 and the top of the blocking cover 534 are mutually matched arc surfaces, which can make the rotation of the support column 532 smoother; the positioning ring 212 can limit the valve stem 51 when the valve stem 51 rotates, so as to prevent the position of the valve stem 51 from being offset and causing the valve stem 51 to rotate poorly, and the second sealing ring 211 can improve the sealing between the valve stem 51 and the valve cover 2, and prevent the fluid inside the valve body 1 from leaking from the mounting hole 21;

[0045] When the valve seat 131 cannot be used anymore due to excessive wear, the staff can replace the valve seat 131. First, the staff can rotate the adjusting ring 41 by the handle 412 to return the adjusting ring 41 to the initial position, and then disassemble the valve stem 51 and the valve core 3 and remove them from the valve body 1 according to the above installation steps. Then, use a tool to remove the bolts connecting the limit ring 61 and the valve body 1, remove the limit ring 61, and then remove the valve seat 131 from the slide groove 13. The staff can also remove the spring 133 that has lost its elasticity inside the slide groove 13, and then put the new spring 133 into the slide groove 13 and set the spring 133 on the first spring groove 13. The valve core 3 can be replaced at the same time, and then the valve core 3 and the valve stem 51 can be installed according to the above steps; the limiting ring 61 can prevent the valve seat 131 from sliding out of the slide groove 13 when it is not in contact with the valve core 3, and at the same time it brings convenience to the staff to replace the valve seat 131 and the valve core 3; the replacement of the valve seat 131 and the valve core 3 can keep the valve working effectively for a long time and increase the service life of the valve as a whole.

[0046] Optionally, in some embodiments, referring to Fig. 9 A plurality of scrapers 7 are fixedly arranged at the bottom of the lower connecting ring 531 .

[0047] With such arrangement, when the fluid circulating inside the valve contains more impurities, the impurities inside the fluid will gradually accumulate at the bottom of the valve cavity and condense and solidify, which may cause the valve to be blocked and the support column 532 to rotate poorly; the valve core 3 will drive the lower connecting ring 531 to rotate during the rotation process, and the lower connecting ring 531 will drive each scraper 7 to rotate. The scrapers 7 have different lengths and are at different distances from the axis of the support column 532. The solidified impurities in each part of the bottom of the valve cavity can be broken during the rotation process, and a part of the broken impurities can be flushed out of the valve cavity by the fluid, thereby reducing the blockage of the valve by impurities. The plugging speed; when a large amount of impurities accumulate inside the valve cavity and need to be cleaned, the staff can remove the valve cover 2, then disassemble the valve core 3 and the valve stem 51, take out the support column 532 from the drain pipe 533 and remove the blocking cover 534, then discharge the impurities accumulated at the bottom of the valve cavity from the drain pipe 533, and then clean the inner wall of the drain pipe 533; after completing the cleaning work, bolt the blocking cover 534 to the bottom of the drain pipe 533, then insert and connect the bottom of the support column 532 into the drain pipe 533, and then install the valve core 3, the valve stem 51 and the valve cover 2.

[0048] Optionally, in some embodiments, referring to Figure 8 A reinforcing rib 31 is provided on the inner surface of the valve core 3 .

[0049] In such a configuration, since the shape of the valve core 3 is a spherical crown, the back side of the valve core 3 may cause the valve core 3 to deform after being subjected to a large fluid pressure for a long time, so that the valve core 3 and the valve seat 131 cannot form an effective seal. The reinforcing rib 31 can increase the mechanical strength of the valve core 3 and reduce the possibility of deformation of the valve core 3.

[0050] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wear-resistant hemispherical valve, characterized in that: The invention comprises a valve body (1), a valve cover (2), a valve core (3), an adjusting mechanism, a control mechanism and a limiting mechanism. The valve body (1) is provided with three water outlet pipes (11). The top of the valve body (1) is also provided with a mounting pipe (12). The water outlet pipes (11) and the mounting pipe (12) are integrally formed with the valve body (1). A slide groove (13) is provided on the inner surface of the valve body (1) corresponding to each water outlet pipe (11). A valve seat (131) and a transmission plate (132) are slidably connected inside the slide groove (13). One side of the transmission plate (132) is in contact with the valve body (1). ), a plurality of springs (133) are arranged between the valve seat (131) and the transmission plate (132), a plurality of first spring columns (134) are fixedly arranged on a surface of the transmission plate (132) close to the valve seat (131), a second spring column (135) is fixedly arranged on one end of the valve seat (131) close to the transmission plate (132), one end of the spring (133) is sleeved on the first spring column (134) and is in contact with the transmission plate (132), and the other end of the spring (133) is sleeved on the second spring column (135) and is in contact with the valve seat (131); The valve cover (2) is bolted to the top of the mounting tube (12); the valve core (3) is rotatably arranged inside the valve body (1); the outer surface of the valve core (3) abuts against an end of a valve seat (131) away from the transmission plate (132); the adjusting mechanism is used to adjust the position of the transmission plate (132) inside the slide groove (13); the control mechanism is used to install the valve core (3) and control the rotation of the valve core (3); and the limiting mechanism is used to prevent the valve seat (131) that is not in contact with the valve core (3) from sliding out of the slide groove (13).

2. The wear-resistant hemispherical valve according to claim 1, characterized in that: A first sealing groove (1311) is provided on the outer circumferential surface of the valve seat (131), a second sealing groove (1312) is provided on the inner circumferential surface of the valve seat (131), and a first sealing ring (1313) is provided inside the first sealing groove (1311) and the second sealing groove (1312).

3. The wear-resistant hemispherical valve according to claim 2, characterized in that: The adjusting mechanism comprises an adjusting ring (41) and a transmission shaft (42); a thread is provided on the inner circumference of the adjusting ring (41); the adjusting ring (41) is sleeved on the water outlet pipe (11) and is threadedly connected to the outer circumference of the water outlet pipe (11); a contact groove (411) is provided on a surface of the adjusting ring (41) close to the transmission plate (132); one end of the transmission shaft (42) is hemispherical and contacts the adjusting ring (41) through the contact groove (411); the other end of the transmission shaft (42) passes through the valve body (1) and is fixedly connected to the transmission plate (132); the transmission shaft (42) is slidably connected to the valve body (1); and a plurality of handles (412) are fixedly provided on the outer circumference of the adjusting ring (41).

4. An anti-wear hemispherical valve according to any one of claims 1 to 3, characterized in that: An abutment ring (1314) is provided on the outer peripheral surface of the valve seat (131), and the abutment ring (1314) is integrally formed with the valve seat (131). The limiting mechanism comprises a limiting ring (61), and the limiting ring (61) is bolted to the inner peripheral surface of the valve body (1), and the abutment ring (1314) abuts against one side of the limiting ring (61).

5. The wear-resistant hemispherical valve according to claim 1, characterized in that: The control mechanism comprises a valve stem (51), an upper connecting ring (52) and a supporting assembly. The valve cover (2) is provided with a mounting hole (21). A second sealing ring (211) and a positioning ring (212) are arranged inside the mounting hole (21). The valve stem (51) passes through the mounting hole (21) and is rotatably connected to the valve cover (2), the second sealing ring (211) and the positioning ring (212). The bottom of the positioning ring (212) abuts against the valve stem (51). The upper connecting ring (52) is bolted to the top of the valve core (3). The bottom of the valve stem (51) is passed through the inside of the upper connecting ring (52) and is key-connected to the upper connecting ring (52). The supporting assembly is used to install and support the bottom of the valve core (3).

6. The wear-resistant hemispherical valve according to claim 5, characterized in that: The support assembly comprises a lower connecting ring (531), a supporting column (532), a sewage pipe (533) and a sealing cover (534); the bottom of the supporting column (532) is rotatably connected to the sewage pipe (533); the lower connecting ring (531) is sleeved on the top of the supporting column (532) and is key-connected to the supporting column (532); the bottom of the valve core (3) is bolted to the lower connecting ring (531); and the sealing cover (534) is used to seal the sewage pipe (533).

7. The wear-resistant hemispherical valve according to claim 6, characterized in that: The blocking cover (534) is bolted to the bottom of the sewage pipe (533), and the bottom of the support column (532) and the top of the blocking cover (534) are both provided with arc surfaces, and the bottom of the support column (532) abuts against the top of the blocking cover (534).

8. The wear-resistant hemispherical valve according to claim 7, characterized in that: A plurality of scrapers (7) are fixedly arranged on the bottom of the lower connecting ring (531).

9. The wear-resistant hemispherical valve according to claim 8, characterized in that: A reinforcing rib (31) is provided on the inner surface of the valve core (3), and the reinforcing rib (31) is integrally formed with the valve core (3).

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