CN213929511U - Sanitary ball valve - Google Patents

Abstract

The utility model discloses a sanitary-grade ball valve, including the ball valve casing, its characterized in that: the utility model discloses a ball valve casing, including ball valve casing, motor, screw shaft, fixed axle, screw shaft one end bearing, screw shaft, valve barrel, fixed axle, ball valve casing inboard is equipped with the clear jam device, the inside of ball valve casing is equipped with automatic opening and closing valve device, the inside device that ends that is equipped with of ball valve casing, the inside valve body that is provided with of ball valve casing, the inside valve barrel that is provided with of ball valve casing, clear jam device includes motor, screw shaft, fixed axle, motor fixed mounting is on the valve barrel, the inboard at the ball valve casing is connected to screw shaft one end bearing, the screw shaft runs through the valve barrel, screw shaft and valve barrel threaded connection, fixed axle bearing connects inside the ball valve casing, fixed mounting has long gear on the screw shaft, fixed.

Description

Sanitary ball valve

Technical Field

The utility model relates to a ball valve technical field specifically is a sanitary-grade ball valve.

Background

The ball valve, the opening and closing piece (spheroid) is driven by the valve stem, and round the valve that the ball valve axis makes rotary motion, also can be used to fluidic regulation and control, wherein have very strong shearing force between its V type ball core of the hard seal V-type ball valve and the metal valve seat of the build-up welding carbide, the medium that is particularly useful for containing fibre, tiny solid particle etc., and the multiple-way ball valve not only can control the confluence of medium, reposition of redundant personnel, and the switching of flow direction in a flexible way on the pipeline, also can close arbitrary passageway and make two other passageways link to each other simultaneously.

The existing ball valve has poor practicability; meanwhile, when the existing ball valve is installed in a pipeline with more impurities in circulating sewage or fluid, the blockage situation is easily caused, and the ball valve is blocked. Therefore, it is necessary to design a sanitary ball valve which has strong practicability, prevents blockage and can be automatically opened and closed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sanitary-grade ball valve to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: a sanitary grade ball valve, includes the ball valve casing, its characterized in that: a blockage clearing device is arranged on the inner side of the ball valve shell, an automatic opening and closing valve device is arranged inside the ball valve shell, a stopping device is arranged inside the ball valve shell, a valve body is arranged inside the ball valve shell, and a valve sleeve is arranged inside the ball valve shell; the liquid flows in, the automatic opening and closing device is started by hydraulic pressure, the ball valve is opened, if the ball valve is blocked after being opened, the blockage clearing device is started by hydraulic pressure change, and meanwhile, the knob on the shell of the ball valve is rotated, so that the ball valve can be stopped and the internal device of the ball valve can be stopped.

According to the technical scheme, the blockage removing device comprises a motor, a spiral shaft and a fixed shaft, the motor is fixedly installed on a valve sleeve, a bearing at one end of the spiral shaft is connected to the inner side of a ball valve shell, the spiral shaft penetrates through the valve sleeve, the spiral shaft is in threaded connection with the valve sleeve, the fixed shaft bearing is connected to the inside of the ball valve shell, a long gear is fixedly installed on the spiral shaft, a first transmission gear and a helical gear are fixedly installed on the fixed shaft, the helical gear is located below the first transmission gear, an output shaft is sleeved on the motor, a driving gear is fixedly installed on the output shaft and is in meshed connection with the helical gear, the first transmission gear is in meshed connection with the long gear, the motor is started to drive the output shaft of the motor to rotate, the driving gear fixedly installed on the output shaft is driven to rotate, and the helical gear meshed with the driving gear is driven to rotate, the fixed shaft is driven to rotate, the first transmission gear fixedly installed on the fixed shaft is driven to rotate, the long gear meshed with the first transmission gear is driven to rotate, the screw shaft is driven to rotate, and the screw shaft rotates and moves downwards in a linear mode under the action of the screw mechanism.

According to the technical scheme, a first hydraulic cylinder and a second hydraulic cylinder are arranged inside the valve sleeve, the first hydraulic cylinder is fixedly arranged on the inner side of the valve sleeve, a first piston is sleeved on the inner side of the first hydraulic cylinder and is in sliding connection with the first piston, a first connecting rod is fixedly arranged on the first piston, a first connecting plate is fixedly arranged at the other end of the first connecting rod, the second hydraulic cylinder is fixedly arranged inside the valve sleeve, a second piston is sleeved on the inner side of the second hydraulic cylinder and is in sliding connection with the second piston, a second connecting rod is fixedly arranged on the second piston, a second connecting plate is fixedly arranged at the other end of the second connecting rod, a push rod is fixedly arranged above the second connecting plate, and first reset springs are welded at two ends below the second connecting plate, the other end of the first return spring is welded on the inner side of the ball valve shell, and the ejector rod is positioned below the first piston; after the ball valve is opened, the pressure in the second hydraulic cylinder is increased, the second piston is made to move downwards, the second connecting rod is driven to move downwards, the second connecting plate fixedly installed below the second connecting plate is driven, the ejector rod fixedly installed on the second connecting plate is driven to move downwards, the ejector rod does not interfere with the movement of the first piston any more, after the ball valve is blocked, the temporary pressure in the second hydraulic cylinder is unchanged, the hydraulic pressure in the first hydraulic cylinder is reduced, the first piston moves downwards, the first connecting rod is driven to move downwards, the first connecting plate moves downwards, the starting button of the trigger motor is driven, the first reset spring drives the second connecting plate to move upwards when the ball valve is closed, the ejector rod moves upwards, the first piston is jacked, and the motor cannot be started.

According to the technical scheme, a limiting block is fixedly mounted on the valve sleeve and positioned below the long gear, a starting button of a motor is arranged below the first connecting plate, and a cleaning knife is fixedly mounted at the lower end of the spiral shaft; the screw shaft drives the cleaning knife to do downward screw feeding motion, and when the long gear on the screw shaft contacts the limiting block, the motor is powered off after reversing for a period of time.

According to the technical scheme, the automatic valve opening and closing device comprises a third hydraulic cylinder and a lever shaft, the third hydraulic cylinder is fixedly installed on the inner side of the valve sleeve, the lever shaft is fixedly installed inside the valve sleeve, a third piston is sleeved on the inner side of the third hydraulic cylinder, the third hydraulic cylinder is connected with the third piston in a sliding mode, a third connecting rod is fixedly installed on the third piston, a second reset spring is fixedly installed at two ends of the third piston, the other end of the second reset spring is welded on the inner side of the third hydraulic cylinder, a bearing at the other end of the third connecting rod is connected with a fourth connecting rod, a bearing at the other end of the fourth connecting rod is connected with a fifth connecting rod, the other end of the fifth connecting rod is fixedly installed on the valve body, and the lever shaft penetrates through the third connecting rod; when liquid flows into the front end of the ball valve, hydraulic pressure in the third hydraulic cylinder is increased to drive the third piston to move rightwards, the third connecting rod is driven to move rightwards, the fourth connecting rod is driven to rotate rightwards, the third connecting rod is amplified through the lever shaft and is converted into rotation leftwards, the fifth connecting rod is driven to rotate leftwards, the valve body is driven to rotate leftwards, the ball valve is opened, after the liquid in the third hydraulic cylinder disappears, the second reset spring drives the third piston to reset, the valve body is driven to rotate leftwards, and the ball valve is closed.

According to the technical scheme, the cut-off device comprises a penetrating shaft, a first transmission shaft and a second transmission shaft, wherein the penetrating shaft, the first transmission shaft and the second transmission shaft are all in bearing connection inside a ball valve shell, the penetrating shaft penetrates through a valve sleeve, a second transmission gear is fixedly mounted on the penetrating shaft, a knob is fixedly mounted above the penetrating shaft, a third transmission gear and a fourth transmission gear are fixedly mounted on the first transmission shaft, the fourth transmission gear is located on the right side of the third transmission gear, a fifth transmission gear is fixedly mounted on the second transmission shaft, the second transmission gear is in meshed connection with the third transmission gear, the fourth transmission gear is in meshed connection with the fifth transmission gear, a rack rod is connected inside the valve sleeve in a penetrating manner and is in sliding connection with the valve sleeve, and a rack on the rack rod is in meshed connection with the fifth transmission gear, a stop plate is fixedly arranged at the lower end of the rack rod; the knob is manually screwed, the knob drives the through shaft to rotate, the second transmission gear fixedly installed on the through shaft is driven to rotate, the third transmission gear meshed and connected with the second transmission gear is driven to rotate, the first transmission shaft is driven to rotate, the fourth transmission gear fixedly installed on the first transmission shaft is driven to rotate, the fifth transmission gear meshed and connected with the fourth transmission gear is driven to rotate, the fifth transmission gear drives the rack rod to move downwards through meshing of the gear and the rack, the two stop plates are attached, and the ball valve is stopped.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the utility model is characterized in that the utility model,

(1) the blockage cleaning device is arranged, the hydraulic cylinder is used for driving the connecting rod to change the liquid flow in the pipeline before and after blockage, the connecting rod triggers the motor to drive the cleaning knife to rotate and rotate downwards at the same time, and the ball valve can automatically clean the blockage after blockage;

(2) by arranging the automatic opening and closing valve device, liquid flows in through the hydraulic cylinder, the connecting rod and the lever mechanism, so that the piston moves to drive the connecting rod to move, the lever amplifies the liquid, the liquid flows in through the mechanism to drive the valve body to rotate, the ball valve is opened, and after the liquid disappears, the device can reset the connecting rod through the spring to close the ball valve, so that the ball valve can be automatically opened and closed;

(3) by arranging the stop device and mechanisms such as a shaft, a gear, a rack and the like, the upper stop plate and the lower stop plate can be attached by twisting the external knob, so that the valve passage is stopped, and the purpose of stopping the whole ball valve is achieved;

(4) by arranging the stop device and the automatic opening and closing valve device, only the inner side flow passage surface of the valve body is contacted with fluid when the valve body is circulated, and the whole valve body can not be contacted with the fluid when the valve body is stopped, so that the valve body is effectively prevented from being corroded.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall front structure of the present invention;

fig. 2 is a schematic view of the overall side structure of the present invention;

fig. 3 is a schematic three-dimensional structure diagram of the knob transmission of the present invention;

FIG. 4 is an enlarged partial schematic view of portion A of FIG. 1;

in the figure: 1. a knob; 2. penetrating the shaft; 3. a ball valve housing; 4. a limiting block; 5. a screw shaft; 6. a long gear; 7. a first drive gear; 8. a fixed shaft; 9. a helical gear; 10. a driving gear; 11. a first connecting plate; 12. a first connecting rod; 13. a motor; 14. a valve housing; 15. a first hydraulic cylinder; 16. a first piston; 17. a top rod; 18. a second hydraulic cylinder; 19. a second piston; 20. a second connecting rod; 21. a second connecting plate; 22. a first return spring; 23. a valve body; 24. a fifth connecting rod; 25. a lever shaft; 26. a fourth connecting rod; 27. a second return spring; 28. a third connecting rod; 29. a third piston; 30. a third hydraulic cylinder; 31. cleaning a knife; 32. a second transmission gear; 33. a fifth transmission gear; 34. a second drive shaft; 35. a rack bar; 36. a cut-off plate; 37. a fourth transmission gear; 38. a first drive shaft; 39. a third drive gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a sanitary grade ball valve, includes ball valve casing 3, its characterized in that: a blockage clearing device is arranged on the inner side of the ball valve shell 3, an automatic opening and closing valve device is arranged inside the ball valve shell 3, a stopping device is arranged inside the ball valve shell 3, a valve body 23 is arranged inside the ball valve shell 3, and a valve sleeve 14 is arranged inside the ball valve shell 3; the liquid flows in, the automatic opening and closing device is started by hydraulic pressure, the ball valve is opened, if the ball valve is blocked after being opened, the blockage clearing device is started by hydraulic pressure change, and meanwhile, the knob 1 on the ball valve shell 3 is rotated, so that the ball valve can be stopped and the internal device of the ball valve can be stopped.

The blockage clearing device comprises a motor 13, a spiral shaft 5 and a fixed shaft 8, wherein the motor 13 is fixedly arranged on a valve sleeve 14, one end of the spiral shaft 5 is connected to the inner side of a ball valve shell 3 through a bearing, the spiral shaft 5 penetrates through the valve sleeve 14, the spiral shaft 5 is in threaded connection with the valve sleeve 14, the fixed shaft 8 is connected to the inside of the ball valve shell 3 through a bearing, a long gear 6 is fixedly arranged on the spiral shaft 5, a first transmission gear 7 and a helical gear 9 are fixedly arranged on the fixed shaft 8, the helical gear 9 is positioned below the first transmission gear 7, an output shaft is sleeved on the motor 13, a driving gear 10 is fixedly arranged on the output shaft, the driving gear 10 is meshed with the helical gear 9, and the first transmission gear 7 is meshed with the long gear 6; the motor 13 is started to drive the output shaft of the motor 13 to rotate, so as to drive the driving gear 10 fixedly arranged on the output shaft to rotate, drive the bevel gear 9 meshed with the driving gear 10 to rotate, drive the fixed shaft 8 to rotate, drive the first transmission gear 7 fixedly arranged on the fixed shaft to rotate, drive the long gear 6 meshed with the first transmission gear 7 to rotate, drive the screw shaft 5 to rotate, and enable the screw shaft 5 to rotate while rotating and do linear motion downwards under the action of the screw mechanism.

A first hydraulic cylinder 15 and a second hydraulic cylinder 18 are arranged inside the valve housing 14, the first hydraulic cylinder 15 is fixedly installed on the inner side of the valve housing 14, a first piston 16 is sleeved on the inner side of the first hydraulic cylinder 15, the first hydraulic cylinder 15 is slidably connected with the first piston 16, a first connecting rod 12 is fixedly installed on the first piston 16, a first connecting plate 11 is fixedly installed at the other end of the first connecting rod 12, the second hydraulic cylinder 18 is fixedly installed inside the valve housing 14, a second piston 19 is sleeved on the inner side of the second hydraulic cylinder 18, the second hydraulic cylinder 18 is slidably connected with the second piston 19, a second connecting rod 20 is fixedly installed on the second piston 19, a second connecting plate 21 is fixedly installed at the other end of the second connecting rod 20, a push rod 17 is fixedly installed above the second connecting plate 21, first return springs 22 are welded at both ends below the second connecting plate 21, and the other end of the first return spring 22 is welded on the inner side of the ball valve housing 3, the ejector rod 17 is positioned below the first piston 16; after the ball valve is opened, the pressure in the second hydraulic cylinder 18 is increased, so that the second piston 19 moves downwards to drive the second connecting rod 20 to move downwards, the second connecting plate 21 fixedly installed below the second connecting plate is driven, the ejector rod 17 fixedly installed on the second connecting plate 21 is driven to move downwards, the ejector rod 17 does not interfere with the movement of the first piston 16 any more, after the ball valve is blocked, the temporary pressure in the second hydraulic cylinder 18 is unchanged, the hydraulic pressure in the first hydraulic cylinder 15 is reduced, the first piston 16 moves downwards to drive the first connecting rod 12 to move downwards to drive the first connecting plate 11 to move downwards, the starting button of the motor 13 is triggered, when the ball valve is closed, the first reset spring 22 drives the second connecting plate 21 to move upwards to drive the ejector rod 17 to move upwards to prop against the first piston 16, and the motor 13 cannot be started.

A limiting block 4 is fixedly installed on the valve sleeve 14, the limiting block 4 is located below the long gear 6, a starting button of the motor 13 is arranged below the first connecting plate 11, a cleaning knife 31 is fixedly installed at the lower end of the screw shaft 5, the screw shaft 5 drives the cleaning knife 31 to perform downward screw feeding motion, and when the long gear 6 on the screw shaft 5 contacts the limiting block 4, the motor 13 is powered off after reversing for one end.

The automatic valve opening and closing device comprises a third hydraulic cylinder 30 and a lever shaft 25, wherein the third hydraulic cylinder 30 is fixedly installed on the inner side of the valve sleeve 14, the lever shaft 25 is fixedly installed inside the valve sleeve 14, a third piston 29 is sleeved on the inner side of the third hydraulic cylinder 30, the third hydraulic cylinder 30 is in sliding connection with the third piston 29, a third connecting rod 28 is fixedly installed on the third piston 29, two ends of the third piston 29 are fixedly provided with second return springs 27, the other ends of the second return springs 27 are welded on the inner side of the third hydraulic cylinder 30, the other end of the third connecting rod 28 is in bearing connection with a fourth connecting rod 26, the other end of the fourth connecting rod 26 is in bearing connection with a fifth connecting rod 24, the other end of the fifth connecting rod 24 is fixedly installed on the valve body 23, and the lever shaft 25 penetrates through the third connecting rod 28; when liquid flows into the front end of the ball valve, the hydraulic pressure in the third hydraulic cylinder 30 is increased to drive the third piston 29 to move rightwards, drive the third connecting rod 28 to move rightwards, drive the fourth connecting rod 26 to rotate rightwards, be amplified and converted into rotation leftwards through the lever shaft 25, drive the fifth connecting rod 24 to rotate leftwards, drive the valve body 23 to rotate leftwards, so that the ball valve is opened, and when the liquid in the third hydraulic cylinder 30 disappears, the second return spring 27 drives the third piston 29 to return, so that the valve body 23 is driven to rotate leftwards, and the ball valve is closed.

The cut-off device comprises a through shaft 2, a first transmission shaft 38 and a second transmission shaft 34, wherein the through shaft 2, the first transmission shaft 38 and the second transmission shaft 34 are all in bearing connection with the inside of a ball valve shell 3, the through shaft 2 penetrates through a valve sleeve 14, a second transmission gear 32 is fixedly arranged on the through shaft 2, a knob 1 is fixedly arranged above the through shaft 2, a third transmission gear 39 and a fourth transmission gear 37 are fixedly arranged on the first transmission shaft 38, the fourth transmission gear 37 is positioned at the right side of the third transmission gear 39, a fifth transmission gear 33 is fixedly arranged on the second transmission shaft 34, the second transmission gear 32 is in meshing connection with the third transmission gear 39, the fourth transmission gear 37 is in meshing connection with the fifth transmission gear 33, a rack rod 35 is connected inside the valve sleeve 14 in a penetrating manner, the rack rod 35 is in sliding connection with the valve sleeve 14, a rack on the rack rod 35 is in meshing connection with the fifth transmission gear 33, a stop plate 36 is fixedly arranged at the lower end of the rack bar 35; the knob 1 is manually screwed, the knob 1 drives the through shaft 2 to rotate, the second transmission gear 32 fixedly installed on the through shaft 2 is driven to rotate, the third transmission gear 39 meshed and connected with the second transmission gear 32 is driven to rotate, the first transmission shaft 38 is driven to rotate, the fourth transmission gear 37 fixedly installed on the first transmission shaft 38 is driven to rotate, the fifth transmission gear 33 meshed and connected with the fourth transmission gear 37 is driven to rotate, the fifth transmission gear 33 drives the rack rod 35 to move downwards through meshing of the gear and the rack, the two stop plates 36 are attached, and the ball valve is stopped.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A sanitary grade ball valve comprising a ball valve housing (3), characterized in that: the ball valve is characterized in that a blockage clearing device is arranged on the inner side of the ball valve shell (3), an automatic opening and closing valve device is arranged inside the ball valve shell (3), a stopping device is arranged inside the ball valve shell (3), a valve body (23) is arranged inside the ball valve shell (3), and a valve sleeve (14) is arranged inside the ball valve shell (3).

2. A sanitary grade ball valve as claimed in claim 1, wherein: the blockage clearing device comprises a motor (13), a screw shaft (5) and a fixed shaft (8), wherein the motor (13) is fixedly installed on a valve sleeve (14), one end of the screw shaft (5) is connected to the inner side of a ball valve shell (3) in a bearing mode, the screw shaft (5) penetrates through the valve sleeve (14), the screw shaft (5) is in threaded connection with the valve sleeve (14), the fixed shaft (8) is connected to the inner portion of the ball valve shell (3) in a bearing mode, a long gear (6) is fixedly installed on the screw shaft (5), a first transmission gear (7) and a helical gear (9) are fixedly installed on the fixed shaft (8), the helical gear (9) is located below the first transmission gear (7), an output shaft is sleeved on the motor (13), and a driving gear (10) is fixedly installed on the output shaft; the driving gear (10) is meshed with the helical gear (9), and the first transmission gear (7) is meshed with the long gear (6).

3. A sanitary grade ball valve as claimed in claim 2, wherein: the valve sleeve is characterized in that a first hydraulic cylinder (15) and a second hydraulic cylinder (18) are arranged inside the valve sleeve (14), the first hydraulic cylinder (15) is fixedly installed on the inner side of the valve sleeve (14), a first piston (16) is sleeved on the inner side of the first hydraulic cylinder (15), the first hydraulic cylinder (15) is in sliding connection with the first piston (16), a first connecting rod (12) is fixedly installed on the first piston (16), a first connecting plate (11) is fixedly installed at the other end of the first connecting rod (12), the second hydraulic cylinder (18) is fixedly installed inside the valve sleeve (14), a second piston (19) is sleeved on the inner side of the second hydraulic cylinder (18), the second hydraulic cylinder (18) is in sliding connection with the second piston (19), a second connecting rod (20) is fixedly installed on the second piston (19), a second connecting plate (21) is fixedly installed at the other end of the second connecting rod (20), the ball valve is characterized in that an ejector rod (17) is fixedly mounted above the second connecting plate (21), first return springs (22) are welded at two ends of the lower portion of the second connecting plate (21), the other ends of the first return springs (22) are welded on the inner side of the ball valve shell (3), and the ejector rod (17) is located below the first piston (16).

4. A sanitary grade ball valve as claimed in claim 3, wherein: the valve sleeve (14) is fixedly provided with a limiting block (4), the limiting block (4) is located below the long gear (6), a starting button of the motor (13) is arranged below the first connecting plate (11), and the lower end of the spiral shaft (5) is fixedly provided with a cleaning knife (31).

5. The sanitary ball valve as claimed in claim 4, wherein: the automatic valve opening and closing device comprises a third hydraulic cylinder (30) and a lever shaft (25), the third hydraulic cylinder (30) is fixedly installed on the inner side of a valve sleeve (14), the lever shaft (25) is fixedly installed inside the valve sleeve (14), a third piston (29) is sleeved on the inner side of the third hydraulic cylinder (30), the third hydraulic cylinder (30) is in sliding connection with the third piston (29), a third connecting rod (28) is fixedly installed on the third piston (29), second reset springs (27) are fixedly installed at two ends of the third piston (29), the other ends of the second reset springs (27) are welded on the inner side of the third hydraulic cylinder (30), a fourth connecting rod (26) is connected to a bearing at the other end of the third connecting rod (28), and a fifth connecting rod (24) is connected to a bearing at the other end of the fourth connecting rod (26), the other end of the fifth connecting rod (24) is fixedly arranged on the valve body (23), and the lever shaft (25) penetrates through the third connecting rod (28).

6. The sanitary ball valve as claimed in claim 5, wherein: the cut-off device comprises a through shaft (2), a first transmission shaft (38) and a second transmission shaft (34), wherein the through shaft (2), the first transmission shaft (38) and the second transmission shaft (34) are all in bearing connection inside a ball valve shell (3), the through shaft (2) penetrates through a valve sleeve (14), a second transmission gear (32) is fixedly installed on the through shaft (2), a knob (1) is fixedly installed above the through shaft (2), a third transmission gear (39) and a fourth transmission gear (37) are fixedly installed on the first transmission shaft (38), the fourth transmission gear (37) is located on the right side of the third transmission gear (39), a fifth transmission gear (33) is fixedly installed on the second transmission shaft (34), the second transmission gear (32) is in meshed connection with the third transmission gear (39), and the fourth transmission gear (37) is in meshed connection with the fifth transmission gear (33), the inside through connection of valve barrel (14) has rack bar (35), rack bar (35) and valve barrel (14) sliding connection, the rack on rack bar (35) is connected with fifth drive gear (33) meshing, the lower extreme fixed mounting of rack bar (35) has and cuts off board (36).

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