阅读说明：本技术 一种两片式法兰球阀 (Two-piece type flange ball valve ) 是由 常逸申 于 2020-07-10 设计创作，主要内容包括：本发明涉及球阀技术领域,公开了一种两片式法兰球阀,包括阀体和阀座,阀芯设置在阀座中,该法兰球阀还包括第一磁性联轴器,第一磁性联轴器包括第一内磁体和第一外磁体,第一内磁体设置在阀芯上,第一外磁体设置在阀体的外侧,该法兰球阀还包括第二磁性联轴器,第二磁性联轴器包括第二内磁体和第二外磁体,第二内磁体固定连接在阀座的一端且与阀座同轴设置,第二外磁体套设在阀体的外部且与阀体转动连接,该法兰球阀还包括清洁组件,清洁组件包括清洁杆和用于移动清洁杆的第三驱动部。本发明中的设置,保障了阀体的密封性能,同时能够进行自清洁。(The invention relates to the technical field of ball valves, and discloses a two-piece type flange ball valve which comprises a valve body and a valve seat, wherein a valve core is arranged in the valve seat, the flange ball valve further comprises a first magnetic coupling, the first magnetic coupling comprises a first inner magnet and a first outer magnet, the first inner magnet is arranged on the valve core, the first outer magnet is arranged on the outer side of the valve body, the flange ball valve further comprises a second magnetic coupling, the second magnetic coupling comprises a second inner magnet and a second outer magnet, the second inner magnet is fixedly connected to one end of the valve seat and is coaxial with the valve seat, the second outer magnet is sleeved outside the valve body and is rotatably connected with the valve body, the flange ball valve further comprises a cleaning assembly, and the cleaning assembly comprises a cleaning rod and a third driving part for moving the cleaning rod. The arrangement of the invention ensures the sealing performance of the valve body and can carry out self-cleaning.)

1. The utility model provides a two-piece formula flange ball valve, includes valve body (1) and pipy disk seat (2), offer on the inner chamber wall of valve body (1) and be used for holding first ring channel (3) of disk seat (2), be provided with case (4) that are used for fluidic regulation in disk seat (2), case (4) set up in disk seat (2), its characterized in that: the flange ball valve further comprises a first magnetic coupling (5), wherein the first magnetic coupling (5) comprises a first inner magnet (6) and a first outer magnet (7), the first inner magnet (6) is arranged on the valve core (4), the first outer magnet (7) is arranged on the outer side of the valve body (1), a first driving part (8) is arranged on the outer side wall of the valve body (1), and the first driving part (8) drives the valve core (4) to control the flange ball valve to be opened and closed through the first magnetic coupling (5);

the flange ball valve further comprises a second magnetic coupling (9), wherein the second magnetic coupling (9) comprises a second inner magnet (10) and a second outer magnet (11), the second inner magnet (10) and the second outer magnet (11) are arranged annularly, the second inner magnet (10) is fixedly connected to one end of the valve seat (2) and coaxially arranged with the valve seat (2), the second outer magnet (11) is sleeved outside the valve body (1) and rotatably connected with the valve body (1), a second driving part (12) for providing power for the second outer magnet (11) is arranged on the outer side wall of the valve body (1), and the second driving part (12) drives the second magnetic coupling (9) to enable the valve seat (2) to rotate around the axis of the valve seat (2) in the first annular groove (3);

the flange ball valve further comprises a cleaning assembly, wherein the cleaning assembly comprises a cleaning rod (14) and a third driving part (15) used for moving the cleaning rod (14); when the third driving part (15) works, the cleaning rod (14) is driven to extend into the valve core (4), so that when the valve seat (2) is driven by the first driving part (8) to rotate, the cleaning rod (14) is always in contact with the inner wall of the valve core (4).

2. A two-piece flanged ball valve according to claim 1, wherein: a positioning part (16) is arranged between the valve core (4) and the valve seat (2), the positioning part (16) is used for limiting the valve seat (2) and the valve core (4), the positioning part (16) is configured with a positioning state and a loosening state, the first driving part (8) enables the positioning part (16) to be switched in state through the first magnetic coupling (5), and the positioning part (16) blocks the relative movement of the valve seat (2) and the valve core (4) when in the positioning state; when the positioning part (16) is in a loosening state, the valve core (4) and the valve seat (2) are loosened.

3. A two-piece flanged ball valve according to claim 1, wherein: the two cleaning assemblies are arranged on the inner wall of the valve body (1) and symmetrically distributed at two ends of the valve seat (2) so that the length direction of the cleaning rod (14) is parallel to the axial direction of the valve seat (2); offer on the inner wall of valve body (1) and be used for holding cleaning assembly's holding tank (17), cleaning rod (14) includes brush (18), brush (18) set up cleaning rod (14) dorsad one side of disk seat (2) axis, when this flange ball valve is in the user state, cleaning rod (14) are accomodate in holding tank (17) and right holding tank (17) are sealed, cleaning rod (14) are right when case (4) are cleaned, cleaning rod (14) are followed stretch out in holding tank (17) so that brush (18) with the inner wall butt of case (4).

4. A two-piece flanged ball valve according to claim 3, wherein: the third driving part (15) comprises a plurality of groups of connecting units, and each connecting unit comprises a connecting rod (19), a rotating rod (20), a sleeve (21) which is sleeved on the rotating rod (20) and is in rotating connection with the rotating rod (20), a gear ring (22) which is fixedly arranged on the circumferential wall of the sleeve (21) and a rack (23) which is in gear joint with the gear ring (22); two ends of the rotating rod (20) are respectively fixedly connected with two side walls of the accommodating groove (17) parallel to the axis of the valve seat (2), and the rotating rods (20) are arranged side by side along the axis direction of the valve seat (2); one end of each connecting rod (19) is hinged with the cleaning rod (14), the other end of each connecting rod (19) is fixedly connected with each sleeve (21), and the rack (23) is connected in the accommodating groove (17) in a sliding manner; the third driving part (15) further comprises an air cylinder (24), a first magnetic block (25) and a second magnetic block (26) mutually attracted with the first magnetic block (25), the first magnetic block (25) is fixedly arranged on the rack (23), the second magnetic block (26) is fixedly arranged on a push rod of the air cylinder (24), the air cylinder (24) is fixedly arranged on the outer side wall of the valve body (1), and the air cylinder (24) drives the rack (23) to slide in the accommodating groove (17) by driving the second magnetic block (26) to move along the axis direction of the valve seat (2).

5. A two-piece flanged ball valve according to claim 2, wherein: the positioning part (16) comprises a sliding block (27), a first groove (28) formed in the outer side wall of the valve core (4) and a second groove (29) formed in the inner side wall of the valve seat (2), the second groove (29) is arranged right opposite to the first groove (28), a convex strip (30) is arranged on the side wall of the groove, the length direction of the convex strip (30) is arranged along the direction of the first groove (28) towards the second groove (29), a sliding groove (31) is formed in the side wall of the sliding block (27), and the sliding block (27) is in sliding connection with the convex strip (30) through the sliding groove (31); be provided with four locating pieces (32) on the last roof of second recess (29), four locating pieces (32) are along same circumference equipartition, sliding block (27) orientation one end of locating piece (32) seted up four with locating piece (32) complex constant head tank (33), sliding block (27) with still be provided with compression spring (34) between first recess (28), compression spring (34) are right sliding block (27) provide one orientation the thrust of locating piece (32) direction to make this flange ball valve be in open mode or when closed state each locating piece (32) stretch into each in constant head tank (33), first interior magnet (6) are the annular setting, first interior magnet (6) set up on sliding block (27).

6. A two-piece flanged ball valve according to claim 5, wherein: the first outer magnet (7) is rotatably connected to the outer side wall of the valve body (1), and the first driving portion (8) comprises a motor (35) for driving the first outer magnet (7) to rotate.

7. A two-piece flanged ball valve according to claim 1, wherein: valve body (1) with still be provided with sealing washer (36) between disk seat (2), second ring channel (37) have all been seted up on the end wall at first ring channel (3) both ends, sealing washer (36) are fixed to be set up in second ring channel (37) just sealing washer (36) orientation the one end of disk seat (2) with disk seat (2) butt.

8. A two-piece flanged ball valve according to claim 1, wherein: the utility model discloses a sealing device for the valve seat, including valve seat (2), valve seat (2) and sealing washer (36), the cover is equipped with a plurality of bearings (38) on the lateral wall of valve seat (2), valve seat (2) pass through bearing (38) with first ring channel (3) rotate to be connected, still be provided with sealing ring (39) on valve seat (2) lateral wall, sealing ring (39) set up sealing washer (36) with between bearing (38).

9. A two-piece flanged ball valve according to claim 3, wherein: a circle of sealing strip (40) is arranged on the side wall of the cleaning rod (14), and when the cleaning rod (14) is accommodated in the accommodating groove (17), the sealing strip (40) seals a gap between the cleaning rod (14) and the accommodating groove (17).

Technical Field

The invention belongs to the technical field of ball valves, and particularly relates to a two-piece type flange ball valve.

Background

Ball valve, the open-close piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The valve rod is arranged on the valve body, the valve core in the valve body is controlled by the valve rod arranged on the existing ball valve, so that the ball valve is switched between an opening state and a closing state, most of the valve rods need to penetrate through the outer wall of the ball valve to be connected with the valve core in the valve body, the whole sealing performance of the ball valve can still be affected even if the sealing ring is arranged at the rotary connection position of the valve rod and the valve body, and leakage can occur during use.

Disclosure of Invention

The first purpose of the invention is to provide a two-piece flange ball valve which has the advantages of good sealing performance and self-cleaning performance.

The technical purpose of the invention is realized by the following technical scheme: a two-piece type flange ball valve comprises a valve body and a tubular valve seat, wherein a first annular groove used for accommodating the valve seat is formed in the wall of an inner cavity of the valve body, a valve core used for adjusting fluid is arranged in the valve seat, the valve core is arranged in the valve seat, the flange ball valve further comprises a first magnetic coupling, the first magnetic coupling comprises a first inner magnet and a first outer magnet, the first inner magnet is arranged on the valve core, the first outer magnet is arranged on the outer side of the valve body, a first driving part is arranged on the outer side wall of the valve body, and the first driving part drives the valve core to control the flange ball valve to be opened and closed through the first magnetic coupling;

the flange ball valve further comprises a second magnetic coupling, the second magnetic coupling comprises a second inner magnet and a second outer magnet, the second inner magnet and the second outer magnet are annularly arranged, the second inner magnet is fixedly connected to one end of the valve seat and coaxially arranged with the valve seat, the second outer magnet is sleeved outside the valve body and rotatably connected with the valve body, a second driving part for providing power for the second outer magnet is arranged on the outer side wall of the valve body, and the second driving part drives the second magnetic coupling to enable the valve seat to rotate around the axis of the valve seat in the first annular groove;

the flange ball valve further comprises a cleaning assembly, wherein the cleaning assembly comprises a cleaning rod and a third driving part for moving the cleaning rod; the third driving part drives the cleaning rod to extend into the valve core when working, so that the cleaning rod is always contacted with the inner wall of the valve core when the valve seat rotates under the driving of the first driving part.

In the present invention, preferably, a positioning portion is disposed between the valve element and the valve seat, the positioning portion is configured to limit the valve seat and the valve element, the positioning portion is configured with a positioning state and a release state, the first driving portion switches the state of the positioning portion through the first magnetic coupling, and the positioning portion blocks relative movement between the valve seat and the valve element when in the positioning state; when the positioning part is in a loosening state, the valve core and the valve seat are loosened.

In the invention, preferably, two cleaning assemblies are arranged, and the two cleaning assemblies are arranged on the inner wall of the valve body and symmetrically distributed at two ends of the valve seat so that the length direction of the cleaning rod is parallel to the axial direction of the valve seat; offer on the inner wall of valve body and be used for holding the holding tank of clean subassembly, clean pole includes the brush, the brush sets up clean pole dorsad one side of disk seat axis, when this flange ball valve is in the user state, clean pole is accomodate in the holding tank and right the holding tank seals, clean pole is right when the case is cleaned, clean pole is followed stretch out in the holding tank so that the brush with the inner wall butt of case.

In the invention, preferably, the third driving part comprises a plurality of groups of connecting units, and each connecting unit comprises a connecting rod, a rotating rod, a sleeve which is sleeved on the rotating rod and is rotatably connected with the rotating rod, a gear ring fixedly arranged on the circumferential wall of the sleeve and a rack which is in gear joint with the gear ring; two ends of the rotating rod are respectively and fixedly connected with two side walls of the accommodating groove parallel to the axis of the valve seat, and the rotating rods are arranged side by side along the axis direction of the valve seat; one end of each connecting rod is hinged with the cleaning rod, the other end of each connecting rod is fixedly connected with each sleeve, and the rack is connected in the accommodating groove in a sliding manner; the third driving part further comprises an air cylinder, a first magnetic block and a second magnetic block mutually attracted with the first magnetic block, the first magnetic block is fixedly arranged on the rack, the second magnetic block is fixedly arranged on a push rod of the air cylinder, the air cylinder is fixedly arranged on the outer side wall of the valve body, and the air cylinder drives the second magnetic block to move along the axis direction of the valve seat so as to drive the rack to slide in the accommodating groove.

In the invention, preferably, the positioning part comprises a sliding block, a first groove formed in the outer side wall of the valve core and a second groove formed in the inner side wall of the valve seat, the second groove is arranged opposite to the first groove, a convex strip is arranged on the side wall of the groove, the length direction of the convex strip is arranged along the direction from the first groove to the second groove, a sliding groove is formed in the side wall of the sliding block, and the sliding block is in sliding connection with the convex strip through the sliding groove; the upper top wall of the second groove is provided with four positioning blocks, the four positioning blocks are uniformly distributed along the same circumference, the sliding block faces towards one end of each positioning block, four positioning grooves matched with the positioning blocks are formed in the one end of each positioning block, a compression spring is further arranged between each sliding block and the corresponding first groove, the compression springs provide one face towards the sliding blocks, thrust in the direction of the positioning blocks is provided, so that the flange ball valve is in an opening state or a closing state, the positioning blocks extend into the positioning grooves, the first inner magnets are arranged in an annular mode, and the first inner magnets are arranged on the sliding blocks.

In the present invention, it is preferable that the first outer magnet is rotatably connected to an outer sidewall of the valve body, and the first driving part includes a motor for driving the first outer magnet to rotate.

In the invention, preferably, a sealing ring is further arranged between the valve body and the valve seat, second annular grooves are formed in end walls of two ends of the first annular groove, the sealing ring is fixedly arranged in the second annular groove, and one end, facing the valve seat, of the sealing ring is abutted against the valve seat.

In the invention, preferably, a plurality of bearings are sleeved on the outer side wall of the valve seat, the valve seat is rotatably connected with the first annular groove through the bearings, and the outer side wall of the valve seat is further provided with a sealing ring which is arranged between the sealing ring and the bearings.

In the present invention, it is preferable that a circle of sealing strips is provided on the side wall of the cleaning rod, and when the cleaning rod is received in the receiving groove, the sealing strips seal a gap between the cleaning rod and the receiving groove.

Compared with the prior art, the invention has the beneficial effects that:

according to the flange ball valve, the opening and closing of the flange ball valve are controlled by the arrangement of the first magnetic coupling instead of a traditional valve rod, additional punching on the valve body is not needed, the sealing performance of the valve body is guaranteed, meanwhile, the cleaning part is arranged, the cleaning of the inner part of the valve core can be realized without detaching the valve seat, and the operation is simple.

Drawings

FIG. 1 is a schematic cross-sectional view of a two-piece flanged ball valve in a closed position;

FIG. 2 is a schematic cross-sectional view of a two-piece flanged ball valve in an open position;

FIG. 3 is a schematic cross-sectional view of a two-piece flanged ball valve in a clean state;

FIG. 4 is a partial enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic top view of the valve core, the sliding block and the first inner magnet;

fig. 6 is a schematic sectional view of the spool and the slide block.

In the drawings: 1. a valve body; 2. a valve seat; 3. a first annular groove; 4. a valve core; 5. a first magnetic coupling; 6. a first inner magnet; 7. a first outer magnet; 8. a first driving section; 9. a second magnetic coupling; 10. a second inner magnet; 11. a second outer magnet; 12. a second driving section; 13. cleaning the assembly; 14. a cleaning rod; 15. a third driving section; 16. a positioning part; 17. accommodating grooves; 18. a brush; 19. a connecting rod; 20. Rotating the rod; 21. a sleeve; 22. a ring gear; 23. a rack; 24. a cylinder; 25. a first magnetic block; 26. a second magnetic block; 27. a slider; 28. a first groove; 29. a second groove; 30. a convex strip; 31. a sliding groove; 32. positioning blocks; 33. positioning a groove; 34. a compression spring; 35. a motor; 36. a seal ring; 37. a second annular groove; 38. a bearing; 39. a seal ring; 40. a sealing strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to the drawings, a preferred embodiment of the present invention provides a two-piece flange ball valve, which includes a valve body 1 and a tubular valve seat 2, wherein a first annular groove 3 for accommodating the valve seat 2 is formed on an inner cavity wall of the valve body 1, a valve core 4 for regulating fluid is disposed in the valve seat 2, and the valve core 4 is disposed in the valve seat 2, and is characterized in that: the flange ball valve further comprises a first magnetic coupling 5, the first magnetic coupling 5 comprises a first inner magnet 6 and a first outer magnet 7, the first inner magnet 6 is arranged on the valve core 4, the first outer magnet 7 is arranged on the outer side of the valve body 1, a first driving part 8 is arranged on the outer side wall of the valve body 1, and the first driving part 8 drives the valve core 4 to control the flange ball valve to be opened and closed through the first magnetic coupling 5; the flange ball valve further comprises a second magnetic coupling 9, the second magnetic coupling 9 comprises a second inner magnet 10 and a second outer magnet 11, the second inner magnet 10 and the second outer magnet 11 are both arranged annularly, the second inner magnet 10 is fixedly connected to one end of the valve seat 2 and is arranged coaxially with the valve seat 2, the second outer magnet 11 is sleeved outside the valve body 1 and is rotatably connected with the valve body 1, a second driving part 12 for providing power for the second outer magnet 11 is arranged on the outer side wall of the valve body 1, and the second driving part 12 drives the second magnetic coupling 9 to enable the valve seat 2 to rotate around the axis of the valve seat 2 in the first annular groove 3; the flange ball valve further comprises a cleaning assembly including a cleaning rod 14 and a third driving part 15 for moving the cleaning rod 14; the third driving portion 15 drives the cleaning rod 14 to extend into the valve core 4 when operating, so that the cleaning rod 14 always contacts with the inner wall of the valve core 4 when the valve seat 2 is driven by the first driving portion 8 to rotate. Case 4 can be the spherical setting, thereby this scheme makes this flange ball valve switch between open mode and closed mode through setting up the switching that first magnetic coupling 5 controlled case 4, when the on-off state that needs rotate in order to switch this flange ball valve to case 4, drive first outer magnet 7 through motor 35 and rotate, the rotation of first outer magnet 7 can drive first interior magnet 6 and take place rotatoryly, make case 4 rotate ninety degrees in disk seat 2 in order to accomplish the switching between open mode and the closed mode. Traditional valve rod has been replaced through setting up of first magnetic coupling 5, need not to punch in addition on valve body 1, has ensured valve body 1's sealing performance, and the setting of clean portion need not to pull down disk seat 2 and just can realize 4 inside cleanness, easy operation simultaneously.

A positioning part 16 is arranged between the valve core 4 and the valve seat 2, the positioning part 16 is used for limiting the position of the valve seat 2 and the valve core 4, the positioning part 16 is configured with a positioning state and a loosening state, the first driving part 8 enables the positioning part 16 to switch states through the first magnetic coupling 5, and the positioning part 16 blocks the relative movement of the valve seat 2 and the valve core 4 when in the positioning state; when the positioning part 16 is in a loosening state, the valve core 4 and the valve seat 2 are loosened; the positioning part 16 comprises a sliding block 27, a first groove 28 formed in the outer side wall of the valve core 4 and a second groove 29 formed in the inner side wall of the valve seat 2, the second groove 29 is arranged opposite to the first groove 28, a convex strip 30 is arranged on the side wall of the groove, the length direction of the convex strip 30 is arranged along the direction of the first groove 28 towards the second groove 29, a sliding groove 31 is formed in the side wall of the sliding block 27, and the sliding block 27 is in sliding connection with the convex strip 30 through the sliding groove 31; four positioning blocks 32 are arranged on the upper top wall of the second groove 29, the four positioning blocks 32 are uniformly distributed along the same circumference, four positioning grooves 33 matched with the positioning blocks 32 are formed in one end, facing the positioning blocks 32, of the sliding block 27, a compression spring 34 is further arranged between the sliding block 27 and the first groove 28, the compression spring 34 provides thrust force, facing the direction of the positioning blocks 32, for the sliding block 27, so that each positioning block 32 extends into each positioning groove 33 when the flange ball valve is in an opening state or a closing state, the first inner magnet 6 is annularly arranged, and the first inner magnet 6 is arranged on the sliding block 27; the first outer magnets 7 are rotatably coupled to an outer sidewall of the valve body 1, and the first driving part 8 includes a motor 35 for driving the first outer magnets 7 to rotate. The positioning portion 16 is provided to fix the relative position between the valve element 4 and the valve seat 2 when the flanged ball valve is in an open state or a closed state, so as to prevent the valve element 4 from being erroneously deflected in the valve seat 2. When the valve core 4 needs to be rotated to switch the open-close state of the flange ball valve, the motor 35 drives the first outer magnet 7 to rotate, the first outer magnet 7 drives the first inner magnet 6 to rotate through magnetic force, because the first inner magnet 6 is positioned on the sliding block 27 and the sliding block 27 is clamped by the positioning block 32 in the first groove 28 at this time, when the first outer magnet 7 rotates to the point N and the point S to respectively repel with the point N and the point S on the first inner magnet 6, the sliding block 27 slides along the convex strip 30 in the direction away from the second groove 29 under the effect of the repulsion force, so that the positioning block 32 is separated from the positioning groove 33, meanwhile, the first inner magnet 6 is driven to rotate due to the rotation of the first outer magnet 7, when the first outer magnet 7 drives the first magnet 6 to rotate, so that the valve core 4 rotates ninety degrees in the valve seat 2 to complete the switching between the open state and the close state, the motor 35 stops working, and the sliding block 27 slides towards the second groove 29 under the elastic action of the compression spring 34, so that the positioning block 32 is inserted into the positioning slot 33 to complete the positioning.

The two cleaning assemblies are arranged on the inner wall of the valve body 1 and are symmetrically distributed at two ends of the valve seat 2, so that the length direction of the cleaning rod 14 is parallel to the axial direction of the valve seat 2; an accommodating groove 17 for accommodating the cleaning assembly is formed in the inner wall of the valve body 1, the cleaning rod 14 comprises a brush 18, the brush 18 is arranged on one side, opposite to the axis of the valve seat 2, of the cleaning rod 14, when the flange ball valve is in a use state, the cleaning rod 14 is accommodated in the accommodating groove 17 and seals the accommodating groove 17, and when the cleaning rod 14 cleans the valve core 4, the cleaning rod 14 extends out of the accommodating groove 17 so that the brush 18 is abutted to the inner wall of the valve core 4; the third driving part 15 comprises a plurality of groups of connecting units, and each connecting unit comprises a connecting rod 19, a rotating rod 20, a sleeve 21 which is sleeved on the rotating rod 20 and is in rotating connection with the rotating rod 20, a gear ring 22 fixedly arranged on the circumferential wall of the sleeve 21 and a rack 23 in toothed connection with the gear ring 22; two ends of the rotating rod 20 are respectively and fixedly connected with two side walls of the accommodating groove 17 parallel to the axis of the valve seat 2, and the rotating rods 20 are arranged side by side along the axis direction of the valve seat 2; one end of each connecting rod 19 is hinged with the cleaning rod 14, the other end of each connecting rod 19 is fixedly connected with each sleeve 21, and the rack 23 is connected in the accommodating groove 17 in a sliding manner; the third driving portion 15 further includes an air cylinder 24, a first magnetic block 25 and a second magnetic block 26 mutually attracted with the first magnetic block 25, the first magnetic block 25 is fixedly disposed on the rack 23, the second magnetic block 26 is fixedly disposed on a push rod of the air cylinder 24, the air cylinder 24 is fixedly disposed on an outer side wall of the valve body 1, and the air cylinder 24 drives the second magnetic block 26 to move along an axis direction of the valve seat 2 to drive the rack 23 to slide in the accommodating groove 17. In the scheme, when the flange ball valve is in a cleaning state, the flange ball valve needs to be in an opening state as necessary so as to communicate the inside of the valve core 4, the inside of the valve seat 2 and the inside of the valve body 1, and when the flange ball valve is cleaned, cleaning rods 14 symmetrically arranged at two sides of the valve core 4 respectively extend into the valve core 4 from two ends of the valve core 4 and enable the brush 18 to be abutted against the inside of the valve core 4; the air cylinder 24 drives the second magnetic block 26 to move, the rack 23 slides and drives the connecting rod 19 to rotate through the gear ring 22 under the action of magnetic attraction between the second magnetic block 26 and the first magnetic block 25, so that the cleaning rod 14 moves out of the accommodating groove 17 to a position where bristles are in contact with the inner surface of the valve element 4, then the second outer magnet 11 is driven to rotate on the outer side wall of the valve body 1 through the second driving part 12, the valve seat 2 is driven to rotate through the second inner magnet 10 when the second outer magnet 11 rotates, the valve element 4 is fixed in position through the sliding block 27 and the valve seat 2 at the moment, so the valve seat 2 can also drive the valve element 4 to rotate when rotating, and the brush 18 is driven to rotate through the valve seat 2 to generate relative displacement on the inner surface of the valve element 4 so as to clean the valve; after cleaning is completed, the air cylinder 24 drives the rack 23 to move through the second magnetic block 26 and the first magnetic block 25, so that the cleaning rod 14 is recovered into the accommodating groove 17, the sealing strip 40 on the cleaning rod 14 seals a gap between the cleaning rod 14 and the accommodating groove 17, and meanwhile, the second driving portion 12 drives the valve seat 2 to rotate and reset through the second magnetic coupling 9, so that the first inner magnet 6 and the first outer magnet 7 relatively recover to the relative position. In the present scheme, the second driving portion 12 is a mechanism capable of driving the annular second outer magnet 11 to rotate on the outer side wall of the valve body 1, for example, an electric motor, and the electric motor and the second outer magnet 11 can be driven by a gear or a belt.

A sealing ring 36 is further arranged between the valve body 1 and the valve seat 2, second annular grooves 37 are formed in end walls of two ends of the first annular groove 3, the sealing ring 36 is fixedly arranged in the second annular grooves 37, and one end, facing the valve seat 2, of the sealing ring 36 is abutted to the valve seat 2; the outer side wall of the valve seat 2 is sleeved with a plurality of bearings 38, the valve seat 2 is rotatably connected with the first annular groove 3 through the bearings 38, the outer side wall of the valve seat 2 is further provided with a sealing ring 39, and the sealing ring 39 is arranged between the sealing ring 36 and the bearings 38. A ring of sealing strips 40 are provided on the side walls of the cleaning bar 14, the sealing strips 40 sealing the gap between the cleaning bar 14 and the receiving groove 17 when the cleaning bar 14 is received in the receiving groove 17. The sealing rings 36 and 39 can improve the sealing performance of the joint between the valve seat 2 and the valve body 1, and the sealing strips 40 can improve the sealing performance of the cleaning part and prevent the fluid in the valve body 1 from entering the accommodating groove 17. The provision of the bearing 38 reduces the friction between the valve seat 2 and the valve body 1 when the valve seat 2 rotates.

The working principle is as follows:

in the scheme, the first magnetic coupling 5 is arranged to control the opening and closing of the valve core 4 so as to switch the flange ball valve between the opening state and the closing state, when the flange ball valve is in the opening state or the closing state, the first driving part 8 does not work, at the moment, the mutual repulsive force is not generated between the first outer magnet 7 and the second outer magnet 11, the sliding block 27 is connected with the positioning block 32 through the positioning groove 33 under the elastic force action of the compression spring 34, because the convex strip 30 in the first groove 28 on the valve core 4 extends into the sliding groove 31 of the sliding block 27, the relative rotation between the valve core 4 and the sliding block 27 can not occur, therefore, the valve core 4 can be fixed at the relative position with the valve seat 2 through the sliding block 27, when the valve core 4 needs to be rotated to switch the opening and closing state of the flange ball valve, the first outer magnet 7 is driven to rotate, the first outer magnet 7 drives the first inner magnet 6 to rotate by magnetic force, because the first inner magnet 6 is on the sliding block 27 and the sliding block 27 is clamped by the positioning block 32 in the first groove 28 at this time, when the first outer magnet 7 rotates to the N pole and the S pole which are respectively repelled with the N pole and the S pole on the first inner magnet 6, the sliding block 27 slides along the convex strip 30 to the direction far away from the second groove 29 under the action of the repelling force, so that the positioning block 32 is separated from the positioning groove 33, meanwhile, the first inner magnet 6 is driven to rotate by the rotation of the first outer magnet 7, when the first outer magnet 7 drives the first inner magnet 6 to rotate, so that the valve core 4 rotates ninety degrees in the valve seat 2 to complete the switching between the open state and the closed state, the motor 35 stops working, at this time, the sliding block 27 slides to the direction of the second groove 29 under the elastic action of the compression spring 34, and make locating piece 32 insert and accomplish the location in the constant head tank 33, such setting can prevent that this flange ball valve from causing the case 4 to take place the mistake to deflect in valve seat 2 because of the influence of factors such as the impact of rivers when using, influences this flange ball valve's normal use. When the valve core 4 of the flange ball valve is required to be cleaned, the first magnetic coupling 5 is driven by the first driving part 8 to enable the valve core 4 to rotate to a state that the flange ball valve is opened, at the moment, the interior of the valve core 4 is communicated with the valve seat 2 and the interior of the valve body 1, then the cylinder 24 drives the second magnetic block 26 to move, the rack 23 slides under the action of magnetic attraction between the second magnetic block 26 and the first magnetic block 25 and drives the connecting rod 19 to rotate through the gear ring 22, so that the cleaning rod 14 moves out of the accommodating groove 17 to a position where bristles are in contact with the inner surface of the valve core 4, then the second external magnet 11 is driven by the second driving part 12 to rotate on the outer side wall of the valve body 1, the valve seat 2 is driven to rotate by the second internal magnet 10 when the second external magnet 11 rotates, and the valve core 4 is fixed in position between the sliding block 27 and the, therefore, the valve seat 2 can drive the valve core 4 to rotate when rotating, and the valve core 4 is driven to rotate by the valve seat 2, so that the brush 18 generates relative displacement on the inner surface of the valve core 4 to clean the valve core 4; after the cleaning is completed, the motor 35 drives the rack 23 to move through the second magnetic block 26 and the first magnetic block 25, so that the cleaning rod 14 is recovered into the accommodating groove 17, and the sealing strip 40 on the cleaning rod 14 seals the gap between the cleaning rod 14 and the accommodating groove 17.