A top entry ball valve

Abstract

The present invention relates to the technical field of ball valves, and discloses a top-mounted ball valve, including a valve body and a ball body, the left and right sides of the valve body are both provided with connecting tubes, the bottom outer surface of the connecting tube on the left side is fixedly connected with a water inlet pipe, a floating plate is provided inside the water accumulation pipe, a push rod is fixedly connected to the top outer surface of the floating plate, an inverted U-shaped rod is fixedly connected to the top outer surface of the push rod, a steel rope is provided inside the hidden groove, a first block is movably connected to the inner wall of the water inlet pipe, and a first spring is fixedly connected to the bottom outer surface of the first block. When the valve body leaks, the fluid enters the water inlet pipe and the water accumulation pipe, cooperates with the floating plate and the push rod, drives the inverted U-shaped rod to move upward, cooperates with the second spring, the second block, the third spring and the third block, blocks the water inlet channel and the drainage channel, so that when the valve body is blocked, the fluid can be blocked in time without affecting its normal use and performance.

Description

Technical Field

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

[0002] A ball valve is a mechanical device used to control the flow of fluid. It is used to cut off or connect the medium in the pipeline. It is usually used in hydraulic pipelines or fluid delivery pipelines. It is widely used in petroleum, chemical, metallurgy and other industries because of its quick and easy opening and closing and strong flexibility. A general ball valve has a valve body, a ball, a valve stem and a handle. The ball is driven by the handle to drive the valve stem and then rotatably set in the valve cavity of the valve body to open and close the valve.

[0003] However, during long-term use, the existing ball valves may have reduced sealing due to aging of the internal parts of the ball valves, which may cause fluid leakage. When leakage occurs, the fluid cannot be blocked in time, affecting the normal use and performance of the ball valve. The valve cannot meet the use requirements and cannot promptly remind the staff to perform maintenance when leakage occurs. Therefore, a top-mounted ball valve is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a top-entry ball valve to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a top-mounted ball valve, comprising a valve body and a ball body, connecting cylinders are arranged on the left and right sides of the valve body, a fluid channel is opened on the outer surface of the connecting cylinder, the right side of the valve body is a water inlet channel, the left side of the valve body is a drainage channel, the bottom outer surface of the left connecting cylinder is fixedly connected with a water inlet pipe, the other end of the water inlet pipe is fixedly connected with a connecting pipe, the end of the connecting pipe away from the water inlet pipe is fixedly connected with a water accumulation pipe, the interior of the water accumulation pipe is fixedly connected with a drainage pipe, a sealing cover is arranged on the outside of the drainage pipe, the rear outer surfaces of the two connecting cylinders are fixedly connected with a transverse pipe, the other end of the transverse pipe is fixedly connected with a regulating box, the water accumulation pipe is fixedly penetrated through the bottom outer surface of the regulating box, a floating plate is arranged inside the water accumulation pipe, the top outer surface of the floating plate is fixedly connected with a push rod, and the top outer surface of the push rod is fixedly connected with an inverted U-shaped rod;

[0006] A hidden groove is provided on the outer surface of the sphere, and a steel rope is arranged inside the hidden groove. A first blocking block is movably connected to the inner wall of the water inlet pipe, and the other end of the steel rope is fixedly connected to the first blocking block. A first spring is fixedly connected to the bottom outer surface of the first blocking block, and a connecting disk is fixedly connected to the inside of the water inlet pipe, and the bottom outer surface of the first spring is fixedly connected to the connecting disk. A vertical rod is movably inserted on the outer surface of the connecting disk, and the top outer surface of the vertical rod is fixedly connected to the first blocking block, and the first spring is sleeved on the outer surface of the vertical rod.

[0007] As a further explanation of the present invention, the interior of the cross tube is movably connected with a second blocking block, the rear outer surface of the adjusting box is fixedly connected with two third springs, the two second blocking blocks are respectively fixedly connected with a connecting column at one end away from the two connecting plates, the other ends of the two third springs are respectively fixedly connected to the two connecting columns, a limiting groove is provided on the top outer surface of the connecting column, and the two ends of the inverted U-shaped rod are respectively movably inserted into the inside of the two limiting grooves.

[0008] As a further explanation of the present invention, the second blocking block is fixedly connected to a connecting plate at one end facing the interior of the connecting tube, a movable rod is movably inserted into the outer surface of the connecting plate, a third blocking block is fixedly connected to the end of the movable rod facing the outside of the valve body, a second spring is fixedly connected between the third blocking block and the connecting plate, the second spring is sleeved on the outer surface of the movable rod, and an inspection cover is provided on the rear outer surface of the regulating box.

[0009] As a further explanation of the present invention, a through hole is opened at the center of the sphere, and a valve stem is rotatably penetrated through the outer surface of the valve body. The valve stem is located outside the valve body and is fixedly connected to a handle.

[0010] As a further explanation of the present invention, the inner surface of the sphere is provided with a receiving groove, the interior of the sphere is rotatably connected with a toothed disc, the outer surface of the toothed disc is provided with a plurality of arc grooves arranged in a circular array, the outer surface of the toothed disc is provided with a plurality of water-permeable holes, the interior of the receiving groove is provided with a plurality of fan-shaped plates, the outer surfaces of the plurality of fan-shaped plates are fixedly connected with sliding columns, and the plurality of sliding columns are respectively slidably connected to the interior of a plurality of arc grooves.

[0011] As a further explanation of the present invention, the interior of the sphere is rotatably connected to a rotating shaft, the outer surface of the rotating shaft is fixedly sleeved with a gear and a worm wheel, the outer surface of the valve stem is rotatably connected to a transmission shaft, the top outer surface of the transmission shaft is fixedly connected to a knob, and the bottom outer surface of the transmission shaft is fixedly connected to a worm, the worm is movably engaged with the worm wheel, and the gear is movably engaged with the gear disk.

[0012] As a further explanation of the present invention, a plurality of sliding rods are fixedly connected to the interior of the accommodating groove, and a plurality of the fan-shaped plates are movably sleeved on the outer surfaces of the plurality of sliding rods respectively.

[0013] As a further explanation of the present invention, a pressure sensor is fixedly installed on the top inner surface of the regulating box above the inverted U-shaped rod, and a sound and light alarm is fixedly installed on the top outer surface of the regulating box. A controller is installed inside the regulating box, and the pressure sensor and the sound and light alarm are electrically connected to the controller.

[0014] As a further explanation of the present invention, guide wheels are provided inside the connecting tube and the valve body, and the steel rope is laid on the outer surface of the guide wheel.

[0015] As a further illustration of the present invention, the first blocking block and the second blocking block are both truncated cone-shaped, the third blocking block is semi-spherical, and the outer surfaces of the first blocking block, the second blocking block and the third blocking block are all fixedly connected with sealing gaskets.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In a top-mounted ball valve provided by the present invention, the steel rope is driven by the rotation of the ball, so that the steel rope drives the first blocking block. When the valve body leaks, the fluid enters the water inlet pipe and the water accumulation pipe, and cooperates with the floating plate and the push rod to drive the inverted U-shaped rod to move upward, and cooperates with the second spring, the second blocking block, the third spring and the third blocking block to block the water inlet channel and the drainage channel, so that when the valve body is blocked, the fluid can be blocked in time without affecting its normal use and performance until the subsequent maintenance personnel inspect the valve body.

[0018] 2. In a top-mounted ball valve provided by the present invention, the worm is rotated by driving the transmission shaft through a knob, and the worm drives the worm wheel to rotate, so that the gear rotates, thereby rotating the toothed disc, and the arc groove and the sliding column are cooperated to adjust the contact area of ​​the sector plate in the through hole, and the fluid is blocked by the sector plate, thereby controlling the flow area of ​​the through hole, and then indirectly controlling the amount of fluid passing through, so that the flow rate of the fluid can be controlled within a certain range according to actual needs.

[0019] 3. In a top-mounted ball valve provided by the present invention, the push rod drives the inverted U-shaped rod to move upward, so that the inverted U-shaped rod squeezes the pressure sensor, so that the pressure sensor senses a value and sends a signal to the controller. The controller causes the sound and light alarm to sound an alarm, thereby being able to promptly remind the staff to inspect the valve body when a leak occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention;

[0021] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0022] Figure 3 It is a front view cross-sectional structural schematic diagram of the present invention;

[0023] Figure 4 It is a schematic diagram of the water inlet pipe and its related structures of the present invention;

[0024] Figure 5 This is a schematic diagram of the rear cross-sectional structure of the regulating box of the present invention;

[0025] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0026] Figure 7 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the regulating box of the present invention viewed from above;

[0028] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0029] Fig.10 It is a schematic diagram of the spherical structure of the present invention;

[0030] Fig.11 It is a schematic diagram of the front cross-sectional structure of the sphere of the present invention;

[0031] Fig.12 It is a schematic diagram of the rear cross-sectional structure of the sphere of the present invention;

[0032] Fig.13 For the present invention Fig.12 Zoom in on D in the middle.

[0033] In the figure: 1. valve body; 2. ball; 3. connecting tube; 4. steel rope; 5. water inlet pipe; 6. first block; 7. first spring; 8. connecting pipe; 9. cross pipe; 10. regulating box; 11. water accumulation pipe; 12. floating plate; 13. push rod; 14. inverted U-shaped rod; 15. connecting column; 16. second block; 17. connecting plate; 18. second spring; 19. third block; 20. third spring; 21. through hole; 22. valve stem; 23. handle; 24. toothed disc; 25. arc groove; 26. sliding column; 27. fan-shaped plate; 28. rotating shaft; 29. ​​gear; 30. worm wheel; 31. knob; 32. worm; 33. sound and light alarm; 34. pressure sensor. DETAILED DESCRIPTION

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

[0035] Embodiment 1:

[0036] Please refer to Figure 1-Figure 9The present invention provides a technical solution: a top-mounted ball valve, comprising a valve body 1 and a ball body 2, a connecting tube 3 is provided on both the left and right sides of the valve body 1, a fluid channel is provided on the outer surface of the connecting tube 3, the right side of the valve body 1 is a water inlet channel, the left side of the valve body 1 is a drainage channel, the bottom outer surface of the left connecting tube 3 is fixedly connected with a water inlet pipe 5, the other end of the water inlet pipe 5 is fixedly connected with a connecting tube 8, the end of the connecting tube 8 away from the water inlet pipe 5 is fixedly connected with a water accumulation pipe 11, and the rear outer surfaces of the two connecting tubes 3 are fixedly connected There is a transverse pipe 9, the other end of which is fixedly connected to a regulating box 10, a water accumulation pipe 11 is fixedly passed through the bottom outer surface of the regulating box 10, a floating plate 12 is arranged inside the water accumulation pipe 11, a push rod 13 is fixedly connected to the top outer surface of the floating plate 12, an inverted U-shaped rod 14 is fixedly connected to the top outer surface of the push rod 13, a hidden groove is opened on the outer surface of the sphere 2, a steel rope 4 is arranged inside the hidden groove, a first blocking block 6 is movably connected to the inner wall of the water inlet pipe 5, the other end of the steel rope 4 is fixedly connected to the first blocking block 6, and the first blocking block The bottom outer surface of valve body 1 is fixedly connected with a first spring 7, the inside of water inlet pipe 5 is fixedly connected with a connecting plate, the bottom outer surface of the first spring 7 is fixedly connected with the connecting plate, the outer surface of the connecting plate is movably inserted with a vertical rod, the top outer surface of the vertical rod is fixedly connected with the first blocking block 6, the first spring 7 is sleeved on the outer surface of the vertical rod, specifically, when valve body 1 is closed, ball body 2 drives steel rope 4, winds steel rope 4 with a certain length, so that steel rope 4 lifts the first blocking block 6, so that water inlet pipe 5 is conductive, when valve body 1 is opened, ball body 2 is reversed The steel rope 4 is spit out by the first spring 7, and the first blocking block 6 seals the water inlet pipe 5 under the elastic force of the first spring 7. When leakage occurs after the valve body 1 is closed, the first blocking block 6 is in a lifted state. At this time, the water inlet pipe 5 and the connecting cylinder 3 at the drainage channel are in a connected state, and the leaked fluid enters the water inlet pipe 5, and the fluid enters the connecting pipe 8 and the water accumulation pipe 11 through the water inlet pipe 5. As the fluid leaks, the fluid causes the float 12 to rise, and the float 12 drives the push rod 13 to move the inverted U-shaped rod 14 upward.

[0037] In this embodiment, the interior of the cross tube 9 is movably connected with a second block 16, and the rear outer surface of the regulating box 10 is fixedly connected with two third springs 20. The two second block 16 is respectively fixedly connected with a connecting column 15 at one end away from the two connecting plates 17. The other ends of the two third springs 20 are respectively fixedly connected with the two connecting columns 15. The top outer surface of the connecting column 15 is provided with a limiting groove, and the two ends of the inverted U-shaped rod 14 are respectively movably inserted into the two limiting grooves. The second block 16 is fixed at one end toward the inside of the connecting tube 3. A connecting plate 17 is connected, and a movable rod is movably inserted into the outer surface of the connecting plate 17. A third blocking block 19 is fixedly connected to one end of the movable rod facing the outside of the valve body 1. A second spring 18 is fixedly connected between the third blocking block 19 and the connecting plate 17. The second spring 18 is sleeved on the outer surface of the movable rod. Specifically, the inverted U-shaped rod 14 moves upward, so that the two ends of the inverted U-shaped rod 14 are disengaged from the limiting groove. At this time, the second blocking block 16 is popped out under the elastic force of the third spring 20. When the second blocking block 16 is popped out, it drives the third blocking block 19 to move.

[0038] In this embodiment, the second blocking block 16 is fixedly connected to a connecting plate 17 at one end facing the inside of the connecting tube 3, a movable rod is movably inserted into the outer surface of the connecting plate 17, and a third blocking block 19 is fixedly connected to the end of the movable rod facing the outside of the valve body 1, and a second spring 18 is fixedly connected between the third blocking block 19 and the connecting plate 17, and the second spring 18 is sleeved on the outer surface of the movable rod. Specifically, when the third blocking block 19 contacts the water inlet channel and the drainage channel, the second spring 18 resets, and the second spring 18 drives the third blocking block 19 to block the water inlet channel and the drainage channel, thereby cutting off the fluid and preventing the fluid from passing through.

[0039] In this embodiment, an inspection cover is provided on the rear outer surface of the regulating box 10, the interior of the water collection pipe 11 is fixedly connected to a drain pipe, and a sealing cover is provided on the outside of the drain pipe. Specifically, after the inspection of the valve body 1 is completed, the inspection cover is opened, the sealing cover is opened to discharge the water in the water collection pipe 11, and the connecting column 15 is pulled so that the two ends of the inverted U-shaped rod 14 continue to be inserted into the limit groove to limit the two connecting columns 15.

[0040] In this embodiment, a through hole 21 is opened at the center of the sphere 2, and a valve stem 22 is rotatably penetrated through the outer surface of the valve body 1. The valve stem 22 is located on the outside of the valve body 1 and is fixedly connected with a handle 23. Specifically, when the valve body 1 needs to be opened, the handle 23 is rotated, and the handle 23 drives the valve stem 22 to rotate the sphere 2 so that the through hole 21 of the sphere 2 is aligned with the water inlet channel and the drainage channel, thereby opening the valve body 1. When closing, the handle 23 is rotated in the opposite direction. It is to be noted that bearings, sealing rings, compression springs and other components are also provided inside the valve body 1, which are existing known technologies and are not improved by the present invention. Therefore, the detailed structure thereof is not specifically elaborated in the present invention.

[0041] In this embodiment, guide wheels are provided inside the connecting tube 3 and the valve body 1, and the steel rope 4 is laid on the outer surface of the guide wheel. Specifically, the steel rope 4 is guided by the guide wheel, so that the first blocking block 6 can be stably lifted upward when the steel rope 4 is wound.

[0042] In this embodiment, the first blocking block 6 and the second blocking block 16 are both truncated cone-shaped, and the third blocking block 19 is semi-spherical. The outer surfaces of the first blocking block 6, the second blocking block 16 and the third blocking block 19 are fixedly connected with sealing gaskets. Specifically, the truncated cone-shaped first blocking block 6 and the second blocking block 16 make the first blocking block 6 completely block the water inlet pipe 5 when in contact with the water inlet pipe 5, and the second blocking block 16 completely blocks the cross pipe 9 when in contact with the cross pipe 9. By setting the semi-spherical third blocking block 19, the third blocking block 19 blocks the fluid channel when in contact with the fluid channel, and when the connecting column 15 is pulled, the third blocking block 19 can be squeezed to compress the second spring 18, and the sealing performance of each block is increased by the sealing gasket.

[0043] In the specific implementation process, the valve body 1 is installed on two pipes. When the valve body 1 needs to be opened, the handle 23 is rotated, and the handle 23 drives the valve stem 22 to rotate the ball 2 so that the through hole 21 of the ball 2 is aligned with the water inlet channel and the drainage channel, thereby opening the valve body 1. When closing, the handle 23 is rotated in the opposite direction. When the valve body 1 is closed, the ball 2 drives the steel rope 4, and the steel rope 4 is wound for a certain length so that the steel rope 4 lifts the first blocking block 6 to make the water inlet pipe 5 conductive. When the valve body 1 is opened, the ball 2 is reversed to spit out the steel rope 4. Under the elastic force of the first spring 7, the first blocking block 6 seals the water inlet pipe 5. When leakage occurs after the valve body 1 is closed, because the first blocking block 6 is in a lifted state, the water inlet pipe 5 is in a connected state with the connecting cylinder 3 at the drainage channel, and the leaked fluid enters The valve body 1 is then closed by the second spring 18. The second spring 18 then moves the third spring 18 to the drain pipe 11. The valve body 1 is then closed by the second spring 18. The valve body 1 is then closed by the second spring 18. The valve body 1 is then closed by the second spring 18. The valve body 1 is then closed by the second spring 18.

[0044] Embodiment 2:

[0045] Please refer to Figure 10-13The present invention provides a technical solution: a receiving groove is provided on the inner surface of the sphere 2, a toothed disc 24 is rotatably connected inside the sphere 2, a plurality of arc grooves 25 arranged in a circumferential array are provided on the outer surface of the toothed disc 24, a plurality of water-permeable holes are provided on the outer surface of the toothed disc 24, a plurality of sector plates 27 are provided inside the receiving groove, a plurality of slide posts 26 are fixedly connected to the outer surfaces of the plurality of sector plates 27, and a plurality of slide posts 26 are respectively slidably connected to the interior of the plurality of arc grooves 25, and specifically, the water-permeable holes are used to increase the fluid passing through the toothed disc 2. 4, when the toothed disc 24 rotates, the slide post 26 rotates from the end of the arc groove 25 away from the center of the toothed disc 24 to the end close to the center of the arc groove 25. The arc groove 25 guides and limits the slide post 26, so that the sector plate 27 is retracted from the accommodating groove to the through hole 21 of the sphere 2, thereby increasing the contact area between the sector plate 27 and the through hole 21, thereby reducing the flow area of ​​the through hole 21, and indirectly reducing the amount of fluid passing through, so that the flow rate of the fluid can be controlled within a certain range according to actual needs.

[0046] In this embodiment, the interior of the sphere 2 is rotatably connected to a rotating shaft 28, and a gear 29 and a worm wheel 30 are fixedly sleeved on the outer surface of the rotating shaft 28. The outer surface of the valve stem 22 is rotatably connected to a transmission shaft, and a knob 31 is fixedly connected to the top outer surface of the transmission shaft, and a worm 32 is fixedly connected to the bottom outer surface of the transmission shaft. The worm 32 is movably engaged with the worm wheel 30, and the gear 29 is movably engaged with the toothed disk 24. Specifically, by rotating the knob 31, the knob 31 drives the transmission shaft to rotate the worm 32, and when the worm 32 rotates, it drives the worm wheel 30 to rotate, so that the rotating shaft 28 rotates. The rotation of the rotating shaft 28 drives the gear 29 thereon to rotate, and the gear 29 is engaged with the toothed disk 24, driving the toothed disk 24 to rotate.

[0047] In this embodiment, a plurality of sliding rods are fixedly connected to the interior of the accommodating groove, and a plurality of fan-shaped plates 27 are movably mounted on the outer surfaces of the plurality of sliding rods. Specifically, when the fan-shaped plates 27 move, they slide on the outer surfaces of the sliding rods, and the fan-shaped plates 27 are limited by the sliding rods, so that the fan-shaped plates 27 can move stably.

[0048] In the specific implementation process, when the valve body 1 needs to be opened to adjust the flow, the knob 31 is rotated, and the knob 31 drives the transmission shaft to rotate the worm 32. When the worm 32 rotates, it drives the worm wheel 30 to rotate, so that the rotating shaft 28 rotates. The rotation of the rotating shaft 28 drives the gear 29 thereon to rotate, and the gear 29 engages with the toothed disc 24 to drive the toothed disc 24 to rotate. When the slide post 26 rotates from the end of the arc groove 25 away from the center of the toothed disc 24 to the end close to the center of the arc groove 25, the arc groove 25 guides and limits the slide post 26, so that the sector plate 27 is retracted from the accommodating groove to the through hole 21 of the sphere 2, thereby increasing the contact area between the sector plate 27 and the through hole 21, thereby reducing the flow area of ​​the through hole 21, and then indirectly reducing the amount of fluid passing through, so that the flow of the fluid can be controlled within a certain range according to actual needs.

[0049] Embodiment 3:

[0050] Please refer to Figure 5 The present invention provides a technical solution: a pressure sensor 34 is fixedly installed on the top inner surface of the regulating box 10 above the inverted U-shaped rod 14, and an audible and visual alarm 33 is fixedly installed on the top outer surface of the regulating box 10. A controller is installed inside the regulating box 10, and the pressure sensor 34 and the audible and visual alarm 33 are both electrically connected to the controller.

[0051] During the specific implementation process, when the push rod 13 drives the inverted U-shaped rod 14 to move upward, the inverted U-shaped rod 14 contacts the pressure sensor 34. The pressure sensor 34 senses the pressure value and sends a signal to the controller. The controller receives the signal and causes the sound and light alarm 33 to sound an alarm, thereby promptly reminding the staff to inspect the valve body 1 when a leak occurs.

[0052] Working principle: During use, the valve body 1 of the present invention is installed on two pipes. When the valve body 1 needs to be opened, the handle 23 is rotated, and the handle 23 drives the valve stem 22 to rotate the ball 2 so that the through hole 21 of the ball 2 is aligned with the water inlet channel and the drainage channel, thereby opening the valve body 1. When closing, the handle 23 is rotated in the opposite direction. When the valve body 1 is closed, the ball 2 drives the steel rope 4, and the steel rope 4 is wound for a certain length so that the steel rope 4 lifts the first blocking block 6, so that the water inlet pipe 5 is conductive. When the valve body 1 is opened, the ball 2 is reversed to spit out the steel rope 4. Under the elastic force of the first spring 7, the first blocking block 6 seals the water inlet pipe 5. When leakage occurs after the valve body 1 is closed, because the first blocking block 6 is in a lifted state, the water inlet pipe 5 is in a connected state with the connecting cylinder 3 at the drainage channel, and the leaked The fluid enters the water inlet pipe 5, and the fluid enters the connecting pipe 8 and the water accumulation pipe 11 through the water inlet pipe 5. As the fluid leaks out, the fluid causes the float plate 12 to rise, and the float plate 12 drives the push rod 13 to move the inverted U-shaped rod 14 upward, so that the two ends of the inverted U-shaped rod 14 are disengaged from the limit groove. At this time, the second blocking block 16 is popped out under the elastic force of the third spring 20. When the second blocking block 16 pops out, it drives the third blocking block 19 to move. When the third blocking block 19 contacts the water inlet channel and the drainage channel, the second spring 18 is reset, and the second spring 18 drives the third blocking block 19 to block the water inlet channel and the drainage channel to cut off the fluid and prevent the fluid from passing through. Therefore, when the valve body 1 is blocked, the fluid can be blocked in time without affecting its normal use and performance until the subsequent maintenance personnel inspect the valve body 1.

[0053] When the valve body 1 is opened and the flow rate needs to be adjusted, the knob 31 is turned, and the knob 31 drives the transmission shaft to rotate the worm 32. When the worm 32 rotates, it drives the worm wheel 30 to rotate, so that the rotating shaft 28 rotates. The rotation of the rotating shaft 28 drives the gear 29 thereon to rotate, and the gear 29 engages with the toothed disc 24 to drive the toothed disc 24 to rotate. When the slide post 26 rotates from the end of the arc groove 25 away from the center of the toothed disc 24 to the end close to the center of the arc groove 25, the arc groove 25 guides and limits the slide post 26, so that the sector plate 27 is retracted from the accommodating groove to the through hole 21 of the sphere 2, thereby increasing the contact area between the sector plate 27 and the through hole 21, thereby reducing the flow area of ​​the through hole 21, and then indirectly reducing the amount of fluid passing through, so that the flow of the fluid can be controlled within a certain range according to actual needs.

[0054] When the push rod 13 drives the inverted U-shaped rod 14 to move upward, the inverted U-shaped rod 14 contacts the pressure sensor 34. The pressure sensor 34 senses the pressure value and sends a signal to the controller. The controller receives the signal and causes the sound and light alarm 33 to sound an alarm, thereby promptly reminding the staff to inspect the valve body 1 when a leak occurs.

[0055] The controller is an existing structure, and the control circuit can be implemented through simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A top-entry ball valve, comprising a valve body (1) and a ball (2), characterized in that: The valve body (1) is provided with a connecting tube (3) on both the left and right sides. The outer surface of the connecting tube (3) is provided with a fluid channel. The right side of the valve body (1) is a water inlet channel, and the left side of the valve body (1) is a drainage channel. The outer surface of the bottom of the connecting tube (3) on the left side is fixedly connected to a water inlet pipe (5). The other end of the water inlet pipe (5) is fixedly connected to a connecting tube (8). The end of the connecting tube (8) away from the water inlet pipe (5) is fixedly connected to a water accumulation pipe (11). The interior of the water accumulation pipe (11) is fixedly connected to a A drainage pipe is provided, the outside of the drainage pipe is provided with a sealing cover, the rear outer surfaces of the two connecting tubes (3) are fixedly connected to a transverse pipe (9), the other end of the transverse pipe (9) is fixedly connected to a regulating box (10), the water accumulation pipe (11) is fixedly passed through the bottom outer surface of the regulating box (10), a floating plate (12) is provided inside the water accumulation pipe (11), the top outer surface of the floating plate (12) is fixedly connected to a push rod (13), and the top outer surface of the push rod (13) is fixedly connected to an inverted U-shaped rod (14); The outer surface of the sphere (2) is provided with a hidden groove, a steel rope (4) is arranged inside the hidden groove, the inner wall of the water inlet pipe (5) is movably connected with a first block (6), the other end of the steel rope (4) is fixedly connected to the first block (6), the bottom outer surface of the first block (6) is fixedly connected with a first spring (7), the inside of the water inlet pipe (5) is fixedly connected with a connecting plate, the bottom outer surface of the first spring (7) is fixedly connected to the connecting plate, a vertical rod is movably inserted into the outer surface of the connecting plate, the top outer surface of the vertical rod is fixedly connected to the first block (6), and the first spring (7) is sleeved on the outer surface of the vertical rod; A second blocking block (16) is movably connected inside the transverse tube (9); two third springs (20) are fixedly connected to the rear outer surface of the regulating box (10); one end of each of the two second blocking blocks (16) away from the two connecting plates (17) is fixedly connected to a connecting column (15); the other ends of the two third springs (20) are respectively fixedly connected to the two connecting columns (15); a limiting groove is provided on the top outer surface of the connecting column (15); and the two ends of the inverted U-shaped rod (14) are respectively movably inserted into the inside of the two limiting grooves; The end of the second blocking block (16) facing the inside of the connecting tube (3) is fixedly connected to a connecting plate (17); a movable rod is movably inserted into the outer surface of the connecting plate (17); the end of the movable rod facing the outside of the valve body (1) is fixedly connected to a third blocking block (19); a second spring (18) is fixedly connected between the third blocking block (19) and the connecting plate (17); the second spring (18) is sleeved on the outer surface of the movable rod; and an inspection cover is provided on the rear outer surface of the regulating box (10); When the valve body (1) is closed, the ball (2) drives the steel rope (4) to wind the steel rope (4) to a certain length, so that the steel rope (4) lifts the first block (6) to make the water inlet pipe (5) conductive. When the valve body (1) is opened, the ball (2) reverses to spit out the steel rope (4). Under the elastic force of the first spring (7), the first block (6) seals the water inlet pipe (5). When leakage occurs after the valve body (1) is closed, the first block (6) is in a lifted state. At this time, the water inlet pipe (5) and the connecting tube (3) at the drainage channel are in a connected state. The leaked fluid enters the water inlet pipe (5), and the fluid enters the connecting pipe (8) and the water accumulation pipe (11) through the water inlet pipe (5). As the fluid leaks, the fluid causes the floating plate (12) to rise. The floating plate (12) drives the push rod (13) to move the inverted U-shaped rod (14) upward. The inverted U-shaped rod (14) moves upward, so that the two ends of the inverted U-shaped rod (14) are disengaged from the limiting grooves. At this time, the second blocking block (16) pops out under the elastic force of the third spring (20). When the second blocking block (16) pops out, it drives the third blocking block (19) to move; When the third blocking block (19) contacts the water inlet channel and the drainage channel, the second spring (18) is reset, and the second spring (18) drives the third blocking block (19) to block the water inlet channel and the drainage channel, thereby cutting off the fluid and preventing the fluid from passing through.

2. A top entry ball valve according to claim 1, characterized in that: A through hole (21) is provided at the center of the sphere (2), a valve stem (22) is rotatably penetrated through the outer surface of the valve body (1), and the valve stem (22) is located outside the valve body (1) and is fixedly connected to a handle (23).

3. A top entry ball valve according to claim 2, characterized in that: The inner surface of the sphere (2) is provided with a receiving groove, the interior of the sphere (2) is rotatably connected with a toothed disc (24), the outer surface of the toothed disc (24) is provided with a plurality of arc-shaped grooves (25) arranged in a circumferential array, the outer surface of the toothed disc (24) is provided with a plurality of water-permeable holes, a plurality of sector plates (27) are arranged inside the receiving groove, the outer surfaces of the plurality of sector plates (27) are fixedly connected with sliding columns (26), and the plurality of sliding columns (26) are respectively slidably connected to the interior of the plurality of arc-shaped grooves (25).

4. A top entry ball valve according to claim 3, characterized in that: The interior of the sphere (2) is rotatably connected to a rotating shaft (28); the outer surface of the rotating shaft (28) is fixedly sleeved with a gear (29) and a worm wheel (30); the outer surface of the valve stem (22) is rotatably connected to a transmission shaft; the top outer surface of the transmission shaft is fixedly connected to a knob (31); the bottom outer surface of the transmission shaft is fixedly connected to a worm (32); the worm (32) is movably meshed with the worm wheel (30); and the gear (29) is movably meshed with the toothed disc (24).

5. A top entry ball valve according to claim 4, characterized in that: A plurality of sliding rods are fixedly connected to the interior of the accommodating groove, and a plurality of the sector plates (27) are movably sleeved on the outer surfaces of the plurality of sliding rods.

6. A top entry ball valve according to claim 5, characterized in that: A pressure sensor (34) is fixedly mounted on the top inner surface of the regulating box (10) above the inverted U-shaped rod (14), and an audible and visual alarm (33) is fixedly mounted on the top outer surface of the regulating box (10). A controller is mounted inside the regulating box (10), and both the pressure sensor (34) and the audible and visual alarm (33) are electrically connected to the controller.

7. A top entry ball valve according to claim 6, characterized in that: The connecting tube (3) and the valve body (1) are both provided with guide wheels inside, and the steel rope (4) is laid on the outer surface of the guide wheel.

8. A top entry ball valve according to claim 7, characterized in that: The first blocking block (6) and the second blocking block (16) are both truncated cone-shaped, the third blocking block (19) is semi-spherical, and the outer surfaces of the first blocking block (6), the second blocking block (16) and the third blocking block (19) are all fixedly connected with sealing gaskets.

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