Rotary ball valve

Abstract

The invention relates to the technical field of rotary ball valves, and provides a rotary ball valve which comprises a valve body, a top cover is fixedly connected to the top of the valve body, a valve rod penetrating through the top cover is rotatably connected to the inner side of the top cover, a valve plate is arranged at the bottom end of the valve rod and comprises a valve plate, the top end of the valve plate is fixedly connected with the bottom end of the valve rod, and the valve plate is slidably connected with the inner wall of the valve body. A bearing plate is slidably connected to one side of the valve plate, a mounting plate is fixedly connected to one side of the bearing plate, a first spring is welded to one side of the mounting plate, the end, away from the mounting plate, of the first spring is welded to the inner wall of the valve plate, a spherical plate is fixedly connected to the other end of the valve plate, and a valve seat part abutting against the spherical plate is arranged at one end of the inner side of the valve body. An operating mechanism for driving the valve rod to rotate is arranged at the top end of the valve rod. Under the elastic force action of the second spring, the valve seat is tightly attached to the spherical plate all the time when the valve body is in the closed state, and the problem of fluid leakage caused by a gap between the valve seat and the spherical plate when the valve body is in the closed state is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary ball valves, and in particular to a rotary ball valve. Background Art

[0002] The rotary ball valve has the functions and advantages of butterfly valve, hemispheric valve, gate valve and stop valve, and has its own unique powerful functions and advantages. It is small in size, light in weight, easy to transport, install, maintain and overhaul, and reliable in operation. The main characteristics of the rotary ball valve are that it can not only reliably shut off in positive pressure, but also in reverse pressure or reverse pressure much greater than the positive pressure. It can automatically align the center and automatically compensate for wear over travel. When closing, it fully utilizes the energy of the medium in the rotary ball valve and automatically applies extremely high sealing pressure ratio, so that the high-hardness sealing pair can achieve reliable zero leakage.

[0003] After searching, the Chinese patent publication number CN209925637U discloses "a rotary ball valve, including a rotary ball valve body, a flange welded to the front surface of the rotary ball valve body, and a first fixing rod welded to the bottom of the rotary ball valve body, a rear cover is fixedly installed on the bottom of the first fixing rod by bolts, a second fixing rod is welded to the top of the rotary ball valve body, and a flow indicator is embedded and installed on one side of the rotary ball valve body, a bracket is fixedly installed on the top of the second fixing rod by bolts, a flow meter is embedded and installed on the inner wall of the rotary ball valve body, and a valve stem is provided through the interior of the rotary ball valve body, a valve core is fixedly installed on the outer wall of the valve stem, and a valve seat cover is embedded and installed in the interior of the flange".

[0004] This type of patent mainly monitors the liquid flow in the rotary ball valve body by setting a flow meter, and can timely discover when the flow is abnormal, and stop using the rotary ball valve body for immediate maintenance, but this type of patent has certain technical defects; 1. In normal use, the valve plate is opened and closed by rotating, and friction occurs between the valve plate and the valve seat, causing wear at the contact position between the valve plate and the valve seat, which leads to a reduction in the space between the valve plate and the valve seat when the valve plate is closed, causing fluid leakage and greatly reducing the service life of the valve body; 2. Factories use rotary ball valves to control the smooth flow of transportation pipelines. Some factories' rotary ball valves are installed outside the factory and do not have any safety protection structure. If outsiders intentionally close the rotary ball valve, the factory's work will stop, causing certain losses. Summary of the invention

[0005] The present invention provides a rotary ball valve, which solves the problem in the prior art that the rotary ball valve has no safety protection structure, so that an outsider can intentionally close the rotary ball valve to cause economic losses to the factory.

[0006] The technical solution of the present invention is as follows: a rotary ball valve comprises a valve body, a top cover is fixedly connected to the top of the valve body, a valve stem that penetrates the top cover is rotatably connected to the inner side of the top cover, a valve plate component is arranged at the bottom end of the valve stem, the valve plate component comprises a valve plate, the top end of the valve plate is fixedly connected to the bottom end of the valve stem, the valve plate is slidably connected to the inner wall of the valve body, a pressure-bearing plate is slidably connected to one side of the valve plate, a mounting plate is fixedly connected to one side of the pressure-bearing plate, a spring 1 is welded to one side of the mounting plate, an end of the spring 1 away from the mounting plate is welded to the inner wall of the valve plate, the other end of the valve plate is fixedly connected to a ball panel, a valve seat component that abuts against the ball panel is arranged at one end of the inner side of the valve body, and an operating mechanism for driving the valve stem to rotate is arranged at the top end of the valve stem.

[0007] Preferably, a discharge pipe communicating with the interior of the valve body is fixedly connected to the bottom of the valve body, and a sealing cover is fixedly connected to the bottom end of the discharge pipe.

[0008] Preferably, the valve seat member includes a valve seat, which is slidably connected to the inner side of the valve body, one end of the valve seat is fixedly connected to a sealing ring, the sealing ring is in contact with a ball panel, and the other end of the valve seat is provided with an annular mounting groove on the outside, and a plurality of springs 2 are welded to the inner side of the mounting groove, and a plurality of the springs 2 are distributed at equal angles around the valve seat, and the ends of a plurality of the springs 2 away from the inner wall of the mounting groove are welded to the inner wall of the valve body.

[0009] Preferably, the operating mechanism includes an installation box, a mounting sleeve is fixedly connected to the bottom of the installation box, the bottom end of the mounting sleeve is fixedly connected to the top cover, the top end of the valve stem passes through the mounting sleeve and extends to the inner side of the installation box, the valve stem is rotatably connected to the inner wall of the mounting sleeve, the top end of the valve stem is fixedly connected to a worm gear, the outer side of the installation box is rotatably connected to a worm, the worm is meshed with the worm gear, one end of the worm is fixedly connected to a handwheel, and a locking assembly for limiting the rotation of the valve stem is provided on the top of the installation box.

[0010] Preferably, the locking assembly includes a fixed box, which is fixedly connected to the top of the installation box, the valve stem passes through the bottom wall of the installation box and is rotatably connected to the bottom wall of the installation box, the top of the valve stem is movably connected with an elastic member, the top of the elastic member is fixedly connected with a clamping seat, the top of the fixed box is hinged with a cover plate, a pressure rod passing through the cover plate is provided at the center position of the cover plate, the top of the pressure rod is fixedly connected with a fixing frame, the fixing frame is fixedly connected to the top of the cover plate, the bottom of the pressure rod is fixedly connected with a clamping block, the clamping block is slidably matched with the clamping seat, and a locking member for limiting the opening of the cover plate is provided on the cover plate.

[0011] Preferably, the vertical cross-section of the card seat is a "concave" structure, and the vertical cross-section of the card block is a rectangular structure.

[0012] Preferably, the elastic member includes an insert rod, a guide groove is formed on the top wall of the valve stem, the bottom end of the insert rod is inserted into the inner side of the guide groove, the top end of the insert rod is fixedly connected to the socket, the outer side of the insert rod is fixedly connected to a limit strip, the limit strip is slidably connected to the inner wall of the guide groove, a spring three is welded to the bottom end of the inner side of the guide groove, and the top end of the spring three is welded to the bottom of the insert rod.

[0013] Preferably, the locking member includes a rotating sleeve 1, which is arranged on the outer side of the pressure rod and is rotatably connected to the pressure rod, the outer side of the rotating sleeve 1 is rotatably connected to the rotating sleeve 2, the outer side of the rotating sleeve 2 is rotatably connected to the rotating sleeve 3, the bottom ends of the rotating sleeve 1, the rotating sleeve 2 and the rotating sleeve 3 are all fixedly connected with baffles, the three baffles are staggered in the horizontal direction, the top ends of the rotating sleeve 1, the rotating sleeve 2 and the rotating sleeve 3 are all fixedly connected with rotating caps, and the top end of the inner side of the fixed box is provided with a limiting member for limiting the baffle and the translation in the vertical direction.

[0014] Preferably, the outer edges of the three rotating caps are fixedly connected with indicator needles, and the top of the cover plate is fixedly connected with an annular angle disc, and the annular angle disc is concentrically arranged with the rotating cap.

[0015] Preferably, the limiting member comprises three limiting ring plates arranged in parallel, the top surfaces of the three baffles respectively contact with the bottom surfaces of the three limiting ring plates, and one end of the three limiting ring plates is provided with an opening groove corresponding to the baffle.

[0016] The working principle and beneficial effects of the present invention are: 1. The worm is rotated by turning the hand wheel. Since the worm is meshed with the worm wheel, the worm wheel will drive the valve stem to rotate synchronously, which makes the valve plate rotate inside the valve body, thereby realizing the opening and closing of the valve body. When the valve body is working normally and the valve plate does not need to be operated, the locking assembly is used to limit the rotation of the valve stem, so as to avoid the staff or external personnel from misoperating and causing the working state of the ball valve to change and affect the normal production work; 2. During use, the fluid impacts the valve plate, and the pressure plate on one side of the valve plate will resist the impact of the fluid. At the same time, the spring will buffer the pressure plate to reduce the impact force on the valve plate. This can reduce the impact wear of the valve plate and extend the service life of the valve plate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a structural schematic diagram of a rotary ball valve of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the valve plate of the present invention; Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part A; Figure 5 It is a structural schematic diagram of the operating mechanism of the present invention; Figure 6 It is a structural schematic diagram of the locking assembly of the present invention; Figure 7 It is a schematic structural diagram of the elastic member of the present invention; Figure 8 It is a structural schematic diagram of the locking member of the present invention; Fig. 9 It is a schematic structural diagram of the position limiting member of the present invention.

[0019] In the figure: 1, valve body; 2, top cover; 3, valve stem; 4, valve plate; 41, valve plate; 42, ball plate; 43, pressure plate; 44, mounting plate; 45, spring 1; 5, valve seat; 51, valve seat; 52, sealing ring; 53, mounting groove; 54, spring 2; 6, discharge pipe; 7, operating mechanism; 71, mounting box; 72, mounting sleeve; 73, worm gear; 74, worm; 75, hand wheel; 76, locking assembly; 761, fixing box; 762, elastic member; 7621, plug rod ; 7622, ​​limit strip; 7623, guide groove; 7624, spring three; 763, holder; 764, cover plate; 765, pressure rod; 766, block; 767, locking piece; 7671, rotating sleeve one; 7672, rotating sleeve two; 7673, rotating sleeve three; 7674, baffle; 7675, rotating cap; 7676, indicator needle; 7677, annular angle engraved plate; 768, fixing frame; 769, limit piece; 7691, limit ring plate; 7692, opening groove. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1 to Figure 9As shown, this embodiment proposes a rotary ball valve, including a valve body 1, a top cover 2 is fixedly connected to the top of the valve body 1, a valve stem 3 that penetrates the top cover 2 is rotatably connected to the inner side of the top cover 2, a discharge pipe 6 that communicates with the inside of the valve body 1 is fixedly connected to the bottom of the valve body 1, a sealing cover is fixedly connected to the bottom end of the discharge pipe 6, a valve plate member 4 is provided at the bottom end of the valve stem 3, the valve plate member 4 includes a valve plate 41, the top end of the valve plate 41 is fixedly connected to the bottom end of the valve stem 3, the valve plate 41 is slidably connected to the inner wall of the valve body 1, a pressure plate 43 is slidably connected to one side of the valve plate 41, a mounting plate 44 is fixedly connected to one side of the pressure plate 43, a spring 45 is welded to one side of the mounting plate 44, and one end of the spring 45 is away from the mounting plate 44 The valve body 1 is welded to the inner wall of the valve plate 41, and the other end of the valve plate 41 is fixedly connected with the ball panel 42. One end of the inner side of the valve body 1 is provided with a valve seat member 5 that contacts the ball panel 42. The valve seat member 5 includes a valve seat 51. The valve seat 51 is slidably connected to the inner side of the valve body 1. One end of the valve seat 51 is fixedly connected with a sealing ring 52. The sealing ring 52 contacts the ball panel 42. An annular mounting groove 53 is provided on the outer side of the other end of the valve seat 51. A plurality of springs 54 are welded to the inner side of the mounting groove 53. The plurality of springs 54 are distributed at equal angles around the valve seat 51. The ends of the plurality of springs 54 away from the inner wall of the mounting groove 53 are all welded to the inner wall of the valve body 1. The top end of the valve stem 3 is provided with an operating mechanism 7 that drives the valve stem 3 to rotate. The operating mechanism 7 includes a mounting box 71, a mounting sleeve 72 is fixedly connected to the bottom of the mounting box 71, the bottom end of the mounting sleeve 72 is fixedly connected to the top cover 2, the top end of the valve stem 3 passes through the mounting sleeve 72 and extends to the inner side of the mounting box 71, the valve stem 3 is rotatably connected to the inner wall of the mounting sleeve 72, the top end of the valve stem 3 is fixedly connected to a worm gear 73, the outer side of the mounting box 71 is rotatably connected to a worm 74, the worm 74 is meshed with the worm gear 73, one end of the worm 74 is fixedly connected to a handwheel 75, and a locking assembly 76 for limiting the rotation of the valve stem 3 is provided at the top of the mounting box 71.

[0022] When in use, the worm 74 is rotated by turning the hand wheel 75. Since the worm 74 is meshed with the worm wheel 73, the worm wheel 73 drives the valve stem 3 to rotate synchronously, which makes the valve plate 41 rotate inside the valve body 1, thereby realizing the opening and closing of the valve body 1. When the valve body 1 is working normally and the valve plate 41 does not need to be operated, the valve stem 3 is restricted from rotating by the locking assembly 76, so as to avoid the working state of the rotary ball valve being changed due to misoperation by staff or external personnel, thereby affecting normal production work. When the valve stem 3 rotates, the valve plate 41 rotates inside the valve body 1. When the ball panel 42 on the valve plate 41 contacts the valve seat 51, the valve body 1 is in a closed state. When the ball panel 42 on the valve plate 41 is separated from the valve seat 51, the valve body 1 is in an open state. When the ball panel 42 and the valve seat 51 are worn during the opening and closing process, the valve seat 51 is always closely fitted with the ball panel 42 under the elastic force of the spring 2 54, thereby avoiding the problem of fluid leakage caused by a gap between the valve seat 51 and the ball panel 42 when the valve body 1 is closed. In addition, during use, the fluid impacts the valve plate 41, and the pressure plate 43 on one side of the valve plate 41 will resist the impact of the fluid. At the same time, the spring 45 will buffer the pressure plate 43 to reduce the impact force on the valve plate 41. This can reduce the impact wear of the valve plate 41 and extend the service life of the valve plate 41 to a certain extent.

[0023] Furthermore, the locking assembly 76 includes a fixed box 761, which is fixedly connected to the top of the installation box 71, the valve stem 3 passes through the bottom wall of the installation box 71, and the valve stem 3 is rotatably connected to the bottom wall of the installation box 71, the top of the valve stem 3 is movably connected with an elastic member 762, the top of the elastic member 762 is fixedly connected with a clamping seat 763, the top of the fixed box 761 is hinged with a cover plate 764, a pressure rod 765 passing through the cover plate 764 is provided at the center position of the cover plate 764, the top of the pressure rod 765 is fixedly connected with a fixing frame 768, the fixing frame 768 is fixedly connected to the top of the cover plate 764, the bottom of the pressure rod 765 is fixedly connected with a clamping block 766, the clamping block 766 is slidably matched with the clamping seat 763, and a locking member 767 for limiting the opening of the cover plate 764 is provided on the cover plate 764, the vertical cross-section of the clamping seat 763 is a "concave" structure, and the vertical cross-section of the clamping block 766 is a rectangular structure.

[0024] When the valve stem 3 needs to be locked, the cover 764 is closed so that the block 766 at the bottom of the pressure rod 765 slides with the seat 763, and the lock piece 767 is used to limit the opening of the cover 764 to fix the cover 764. At this time, the valve stem 3 is restricted by the block 766 and cannot rotate, so the hand wheel 75 cannot rotate, thereby preventing outsiders from maliciously operating the hand wheel 75 to change the working state of the rotary ball valve and affect normal production work.

[0025] Furthermore, the elastic member 762 includes an insert rod 7621, a guide groove 7623 is provided on the top wall of the valve stem 3, the bottom end of the insert rod 7621 is inserted into the inner side of the guide groove 7623, the top end of the insert rod 7621 is fixedly connected to the holder 763, the outer side of the insert rod 7621 is fixedly connected to a limit strip 7622, ​​the limit strip 7622 is slidably connected to the inner wall of the guide groove 7623, a spring three 7624 is welded to the bottom end of the inner side of the guide groove 7623, and the top end of the spring three 7624 is welded to the bottom of the insert rod 7621. During the sliding cooperation between the block 766 and the seat 763, the seat 763 is squeezed by the block 766 and moves downward, so that the spring three 7624 is compressed to generate elastic force, which makes the seat 763 and the block 766 in elastic contact, thereby ensuring that the block 766 and the seat 763 can cooperate smoothly, and the limit strip 7622 can limit the relative rotation between the insert rod 7621 and the valve stem 3.

[0026] Furthermore, the locking member 767 includes a rotating sleeve 1 7671, which is sleeved on the outer side of the pressure rod 765 and is rotatably connected to the pressure rod 765. The outer side of the rotating sleeve 1 7671 is rotatably connected to the rotating sleeve 2 7672, and the outer side of the rotating sleeve 2 7672 is rotatably connected to the rotating sleeve 3 7673. The bottom ends of the rotating sleeve 1 7671, the rotating sleeve 2 7672 and the rotating sleeve 3 7673 are all fixedly connected to baffle plates 7674. The three baffle plates 7674 are staggered in the horizontal direction. The top ends of the rotating sleeve 1 7671, the rotating sleeve 2 7672 and the rotating sleeve 3 7673 are all fixedly connected to the rotating sleeve 3 Rotating cap 7675, the outer edges of the three rotating caps 7675 are fixedly connected with indicator needles 7676, the top of the cover plate 764 is fixedly connected with an annular angle dial 7677, the annular angle dial 7677 is arranged concentrically with the rotating cap 7675, and the top end of the inner side of the fixed box 761 is provided with a limiting member 769 for limiting the baffle 7674 and the translation in the vertical direction. The limiting member 769 includes three parallel limiting ring plates 7691, the top surfaces of the three baffles 7674 respectively contact with the bottom surfaces of the three limiting ring plates 7691, and one end of the three limiting ring plates 7691 is provided with an opening groove 7692 corresponding to the baffle 7674.

[0027] Working principle: The worm 74 is rotated by turning the hand wheel 75. Since the worm 74 is meshed with the worm wheel 73, the worm wheel 73 drives the valve stem 3 to rotate synchronously, which makes the valve plate 41 rotate inside the valve body 1. When the ball panel 42 on the valve plate 41 contacts the valve seat 51, the valve body 1 is in a closed state. When the ball panel 42 on the valve plate 41 is separated from the valve seat 51, the valve body 1 is in an open state. When it is necessary to lock the valve stem 3, the cover plate 764 is closed so that the block 766 at the bottom of the pressure rod 765 slides with the seat 763. During this process, the three baffles 7674 will all cooperate with the opening groove 7692 and be fixed to the position of the corresponding limiting ring plate 7691. Then the staff will rotate the three rotating caps 7675 to the preset angle respectively, so that the rotating sleeve 1 7671, the rotating sleeve 2 7672 and the rotating sleeve 3 7673 drive the corresponding baffles 7674 to rotate and contact the bottom surface of the corresponding limiting ring plate 7691. At this time, the cover plate 764 is restricted by the baffle plate 7674 and cannot be opened. At the same time, external personnel do not know the rotation angle value of the rotating cap 7675 and cannot open the cover plate 764, which greatly improves the safety of the rotary valve.

[0028] 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 rotary ball valve, comprising a valve body (1), the top of the valve body (1) being fixedly connected to a top cover (2), the inner side of the top cover (2) being rotatably connected to a valve stem (3) penetrating the top cover (2), characterized in that: A valve plate member (4) is provided at the bottom end of the valve stem (3), and the valve plate member (4) includes a valve plate (41). The top end of the valve plate (41) is fixedly connected to the bottom end of the valve stem (3), and the valve plate (41) is slidably connected to the inner wall of the valve body (1). A pressure plate (43) is slidably connected to one side of the valve plate (41), and a mounting plate (44) is fixedly connected to one side of the pressure plate (43). A spring (45) is welded to one side of the mounting plate (44), and one end of the spring (45) away from the mounting plate (44) is welded to the inner wall of the valve plate (41). The other end of the valve plate (41) is fixedly connected to a ball plate (42). A valve seat member (5) abutting against the ball plate (42) is provided at one end of the inner side of the valve body (1), and an operating mechanism (7) for driving the valve stem (3) to rotate is provided at the top end of the valve stem (3); The operating mechanism (7) comprises a mounting box (71), the bottom of the mounting box (71) is fixedly connected to a mounting sleeve (72), the bottom end of the mounting sleeve (72) is fixedly connected to the top cover (2), the top end of the valve stem (3) passes through the mounting sleeve (72) and extends to the inner side of the mounting box (71), the valve stem (3) is rotatably connected to the inner wall of the mounting sleeve (72), the top end of the valve stem (3) is fixedly connected to a worm gear (73), the outer side of the mounting box (71) is rotatably connected to a worm (74), the worm (74) is meshed with the worm gear (73), one end of the worm (74) is fixedly connected to a hand wheel (75), and a locking assembly (76) for limiting the rotation of the valve stem (3) is provided at the top of the mounting box (71).

2. A ball valve according to claim 1, characterized in that: The bottom of the valve body (1) is fixedly connected to a discharge pipe (6) which communicates with the interior of the valve body (1), and the bottom end of the discharge pipe (6) is fixedly connected to a sealing cover.

3. A ball valve according to claim 1, characterized in that: The valve seat member (5) comprises a valve seat (51), the valve seat (51) being slidably connected to the inner side of the valve body (1), one end of the valve seat (51) being fixedly connected to a sealing ring (52), the sealing ring (52) being in contact with the ball panel (42), the other end of the valve seat (51) being provided with an annular mounting groove (53) on the outer side, a plurality of springs (54) being welded to the inner side of the mounting groove (53), the plurality of springs (54) being distributed at equal angles around the valve seat (51), and the ends of the plurality of springs (54) away from the inner wall of the mounting groove (53) being welded to the inner wall of the valve body (1).

4. A ball valve according to claim 1, characterized in that: The locking assembly (76) comprises a fixed box (761), the fixed box (761) is fixedly connected to the top of the installation box (71), the valve stem (3) passes through the bottom wall of the installation box (71), and the valve stem (3) is rotatably connected to the bottom wall of the installation box (71), the top of the valve stem (3) is movably connected to an elastic member (762), the top of the elastic member (762) is fixedly connected to a clamping seat (763), the top of the fixed box (761) is hingedly connected to a cover plate (764), and the cover A pressure rod (765) penetrating the cover plate (764) is provided at the center of the plate (764); a fixing frame (768) is fixedly connected to the top of the pressure rod (765); the fixing frame (768) is fixedly connected to the top of the cover plate (764); a clamping block (766) is fixedly connected to the bottom of the pressure rod (765); the clamping block (766) is slidably matched with the clamping seat (763); and a locking member (767) for limiting the opening of the cover plate (764) is provided on the cover plate (764).

5. A ball valve according to claim 4, characterized in that: The vertical cross-section of the card seat (763) is a "concave" structure, and the vertical cross-section of the card block (766) is a rectangular structure.

6. A ball valve according to claim 4, characterized in that: The elastic member (762) comprises an insert rod (7621), a guide groove (7623) is formed on the top wall of the valve stem (3), the bottom end of the insert rod (7621) is inserted into the inner side of the guide groove (7623), the top end of the insert rod (7621) is fixedly connected to the holder (763), the outer side of the insert rod (7621) is fixedly connected to a limit strip (7622), the limit strip (7622) is slidably connected to the inner wall of the guide groove (7623), a spring three (7624) is welded to the bottom end of the inner side of the guide groove (7623), and the top end of the spring three (7624) is welded to the bottom of the insert rod (7621).

7. A ball valve according to claim 6, characterized in that: The locking member (767) comprises a rotating sleeve (7671), wherein the rotating sleeve (7671) is sleeved on the outside of the pressure rod (765), and the rotating sleeve (7671) is rotatably connected to the pressure rod (765), the outer side of the rotating sleeve (7671) is rotatably connected to a rotating sleeve (7672), and the outer side of the rotating sleeve (7672) is rotatably connected to a rotating sleeve (7673), and the rotating sleeve (7671) and the rotating sleeve (7673) are rotatably connected to each other. The bottom ends of the rotating sleeve (72) and the rotating sleeve (7673) are fixedly connected with a baffle (7674), and the three baffles (7674) are staggered in the horizontal direction. The top ends of the rotating sleeve (7671), the rotating sleeve (7672) and the rotating sleeve (7673) are fixedly connected with a rotating cap (7675), and the top end of the inner side of the fixed box (761) is provided with a limit member (769) for limiting the baffle (7674) and the translation in the vertical direction.

8. A ball valve according to claim 7, characterized in that: The outer edges of the three rotating caps (7675) are all fixedly connected with indicator needles (7676), and the top of the cover plate (764) is fixedly connected with an annular angle disc (7677), and the annular angle disc (7677) is concentrically arranged with the rotating caps (7675).

9. A rotary ball valve according to claim 8, characterized in that: The limiting member (769) comprises three limiting ring plates (7691) arranged in parallel, the top surfaces of the three baffle plates (7674) respectively contact the bottom surfaces of the three limiting ring plates (7691), and one end of the three limiting ring plates (7691) is provided with an opening groove (7692) corresponding to the baffle plate (7674).

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