Ball valve and ball valve opening and closing control system

Abstract

The present invention discloses a ball valve and a ball valve opening and closing control system, belonging to the field of valve intelligent control technology. When the ball valve is opened or closed, the control unit first drives a transmission rod to drive a rotating sleeve and an elliptical disk to rotate 90 degrees, so that the distance between two valve seats is increased, so that the valve seat does not contact the ball valve core, and then the first switch controls the motor to rotate forward or reverse, so that the opening and closing state of the ball valve is switched, and then the second switch or the third switch controls the rotating sleeve and the elliptical disk to rotate 90 degrees again, so that the two valve seats can contact the ball valve core, so that the wear between the ball valve core and the valve seat during rotation can be reduced, so as to extend the service life of the ball valve, and also can reduce the resistance of the ball valve when it is opened.

Description

Technical Field

[0001] The invention discloses a ball valve and a ball valve opening and closing control system, belonging to the technical field of valve intelligent control. Background Art

[0002] Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The hard-sealed V-type ball valve has a strong shear force between its V-shaped ball core and the metal valve seat welded with hard alloy, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction of the medium on the pipeline, but also close any channel and connect the other two channels. There are two types of ball valve sealing structures, including fixed and floating types. The fixed ball valve is a valve seat on one side of the ball that cannot be moved, so that the ball and the valve seat are hard-sealed, while the floating ball valve is a valve seat that can slide, so that the friction between the ball and the valve seat is small, thereby reducing the wear between the ball and the valve seat when rotating, so as to extend the service life of the ball valve. However, because the valve seat always keeps in contact with the ball under the action of the spring, especially when the edge of the ball channel rubs against the valve seat, it will cause the ball or the valve seat to wear too fast and affect its sealing. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a ball valve and a ball valve opening and closing control system.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions, a ball valve and a ball valve opening and closing control system, comprising:

[0005] A valve assembly, comprising a valve body, a ball valve core, a first spring, a valve seat and a power member, wherein the ball valve core is located in the valve seat, two valve seats are provided, the first spring exerts a force on the valve seat to resist the ball valve core, and the power member is installed on the valve body and is used to drive the ball valve core to rotate;

[0006] The actuator assembly is provided in two groups and is rotatably mounted on the upper and lower sides of the valve body corresponding to the ball valve core. The two groups of the actuator assembly are located between the two valve seats and adjust the distance between the two valve seats during the rotation of the actuator assembly.

[0007] A hydraulic transmission assembly, comprising a first oil supply assembly, a second oil supply assembly and a transmission rod, wherein the transmission rod is provided in two groups and is horizontally slidably arranged in the valve body, the first oil supply assembly and the second oil supply assembly are respectively located on both sides of the two groups of transmission rods, and the two use hydraulic oil to apply two thrusts in opposite directions to the same group of transmission rods in succession during operation, so that the transmission rod drives the actuator assembly to rotate forward or reverse;

[0008] A control unit includes a first switch, a second switch and a third switch, wherein the first oil supply component starts to work after receiving an opening or closing signal of the ball valve, the execution component controls the closing of the first switch, and the first switch sends an electrical signal to control the operation of the power component after closing, the power component controls the closing of the second switch or the third switch, and sends an electrical signal to control the operation of the second oil supply component after the second switch or the third switch is closed.

[0009] Preferably, the actuator comprises a rotating sleeve and an elliptical disk, wherein the elliptical disk is disposed on the rotating sleeve and located between two valve seats, wherein the major axis length of the elliptical disk is greater than the distance between the two valve seats, and the minor axis length is less than the distance between the two valve seats.

[0010] Preferably, the rotating sleeve and the elliptical disk are integrally formed, positioning surfaces are provided on the upper and lower sides of the ball valve core, a limiting portion is provided at the end of the rotating sleeve away from the elliptical disk, a gear is installed on the limiting portion, and a pressure plate is fixed to the limiting portion by bolts, the first conductive sheet is fixed to the pressure plate, a horizontal tube for installing a transmission rod is provided on the valve body, a plurality of annular grooves meshing with the gears are provided on the transmission rod, and first sealing plugs for slidingly sealing with the first oil supply channel and the second oil supply channel are also provided at both ends of the transmission rod.

[0011] Preferably, the power component includes a valve stem, a worm gear, a worm and a motor. The valve body is provided with a mounting seat for installing the worm gear and the worm. One end of the valve stem is connected to the ball valve core, and the other end is connected to the worm gear. One end of the worm is fixedly connected to the motor output shaft, and the worm and the worm gear are meshingly transmitted.

[0012] Preferably, the first oil supply assembly includes a first oil pump and a first oil supply channel, the second oil supply assembly includes a second oil pump and a second oil supply channel, the two ends of the transmission rod are respectively located in the first oil supply channel and the second oil supply channel, the first oil pump is used to supply oil to the first oil supply channel so that the two transmission rods slide toward the second oil supply channel and drive the two rotating sleeves to rotate 90° clockwise synchronously, and the second oil pump is used to supply oil to the second oil supply channel so that the two transmission rods slide toward the first oil supply channel and drive the two rotating sleeves to rotate 90° counterclockwise synchronously.

[0013] Preferably, the rotating sleeve and the worm gear are respectively provided with a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet rotate synchronously with the rotating sleeve and the worm gear respectively, the first switch is mounted on the valve body, and the first conductive sheet is electrically connected to the first switch, the second switch and the third switch are mounted on the mounting seat, and the second conductive sheet is electrically connected to the second switch or the third switch, the first switch is coupled to the motor to send a signal to control the forward or reverse rotation of the motor, and the second switch and the third switch are coupled to the second oil pump to respectively send a signal to control the second oil pump to supply oil to the second oil supply channel.

[0014] Preferably, the first oil supply channel and the second oil supply channel have the same structure, both of which include an oil supply pipe, a second spring, a second sealing plug and a plug, the oil supply pipe is provided with an oil inlet pipe, an oil outlet pipe and an oil guide pipe, and two of the oil outlet pipe and the oil guide pipe are provided, the oil inlet pipe is located in the middle of the oil supply pipe, the two oil outlet pipes are located at both ends of the oil supply pipe, the oil guide pipe is located between the oil outlet pipe and the oil inlet pipe, and the oil guide pipe is fixedly connected to the horizontal pipe, an oil inlet hole is provided in the middle of the oil supply pipe, and active cavities are provided at both ends of the oil supply pipe, the second spring and the second sealing plug are located in the active cavity, and the second spring applies a force to the second sealing plug to block the oil guide pipe and the oil inlet hole, and allows the oil guide pipe and the oil outlet pipe to be in a connected state under normal conditions.

[0015] Preferably, the first switch, the second switch and the third switch all include a trigger, a movable connecting rod and a third spring, and the movable connecting rod and the third spring of the same switch are provided in two groups, and the third spring applies a force on the movable connecting rod to approach the first conductive sheet or the second conductive sheet.

[0016] Preferably, the valve body has a positioning rod coaxially arranged with the valve stem, and one end of the positioning rod and the valve stem has a protrusion connected to the valve stem, and the cross-section of the protrusion is a non-circular structure.

[0017] A ball valve comprises an opening and closing control system.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By setting an actuator, a hydraulic transmission assembly and a control unit, the first oil pump and the second oil pump are used to supply oil to the first oil supply channel and the second oil supply channel respectively, so that before the ball valve is opened or closed, the transmission rod drives the rotating sleeve and the elliptical disk to rotate, so that the two valve seats are first separated from the interference with the ball valve core. In this way, the ball valve core will not contact the valve seat when rotating, so that the two can reach a zero wear state, thereby greatly extending the service life of the ball valve.

[0020] 2. Before the ball valve is opened, the elliptical disk drives the two valve seats to slide away from each other, so that there is a gap between the valve seats and the ball valve core for fluid to pass through. The size of the gap is determined by the distance between the two valve seats and the size of the long axis of the elliptical disk. This can achieve pressure relief before the ball valve is opened, thereby reducing the resistance during opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a control principle diagram of a ball valve opening and closing control system of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a ball valve opening and closing control system of the present invention Figure 1 ;

[0023] Figure 3 A schematic diagram of the structure of a ball valve opening and closing control system of the present invention Figure 2 ;

[0024] Figure 4 It is a structural schematic diagram of the execution component and the hydraulic transmission component in the present invention;

[0025] Figure 5 for Figure 2 Sectional view in the AA direction;

[0026] Figure 6 for Figure 2 Cross-sectional view in the BB direction;

[0027] Figure 7 An exploded view of the positioning rod and the actuator assembly in the present invention;

[0028] Figure numerals: 1, first oil pump; 2, first switch; 3, motor; 4, second switch; 5, third switch; 6, second oil pump; 7, hydraulic transmission assembly; 8, first oil supply channel; 9, valve body; 10, second oil supply channel; 11, protrusion; 12, power piece; 13, oil supply pipe; 14, oil inlet pipe; 15, oil outlet pipe; 16, gear; 17, positioning rod; 18, horizontal pipe; 19, actuator; 20, mounting seat; 21, valve stem; 22, valve Seat; 23, ball valve core; 24, first conductive sheet; 25, elliptical disk; 26, first spring; 27, rotating sleeve; 28, second conductive sheet; 29, transmission rod; 30, worm gear; 31, worm; 32, annular groove; 33, first sealing plug; 34, second sealing plug; 35, second spring; 36, plug; 37, oil guide pipe; 38, movable cavity; 39, oil inlet hole; 40, movable connecting rod; 41, pressure plate; 42, limit part; 43, third spring. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figure 1-Figure 7 As shown, a ball valve opening and closing control system comprises:

[0031] The valve assembly includes a valve body 9, a ball valve core 23, a first spring 26, a valve seat 22 and a power member 12. The ball valve core 23 is located in the valve seat 22. Two valve seats 22 are provided. The first spring 26 exerts a force on the valve seat 22 to resist the ball valve core 23. The power member 12 is installed on the valve body 9 and is used to drive the ball valve core 23 to rotate.

[0032] The actuator 19 is provided with two groups and is rotatably mounted on the upper and lower sides of the valve body 9 corresponding to the ball valve core 23. The two groups of actuators 19 are located between the two valve seats 22, and the distance between the two valve seats 22 is adjusted during the rotation of the actuator 19;

[0033] The hydraulic transmission assembly 7 includes a first oil supply assembly, a second oil supply assembly and a transmission rod 29. The transmission rod 29 is provided with two groups and is horizontally slidably arranged in the valve body 9. The first oil supply assembly and the second oil supply assembly are respectively located on both sides of the two groups of transmission rods 29. When working, the two use hydraulic oil to apply two thrusts in opposite directions to the same group of transmission rods 29 in turn, so that the transmission rod 29 drives the actuator 19 to rotate forward or reverse;

[0034] A control unit includes a first switch 2, a second switch 4 and a third switch 5. The first oil supply component starts working after receiving an opening or closing signal of the ball valve. The execution component 19 controls the closing of the first switch 2, and the first switch 2 sends an electrical signal to control the operation of the power member 12 after closing. The power member 12 controls the closing of the second switch 4 or the third switch 5, and sends an electrical signal to control the operation of the second oil supply component after the second switch 4 or the third switch 5 is closed.

[0035] The actuator 19 includes a rotating sleeve 27 and an elliptical disk 25. The elliptical disk 25 is arranged on the rotating sleeve 27 and is located between the two valve seats 22. The length of the major axis of the elliptical disk 25 is greater than the distance between the two valve seats 22, and the length of the minor axis is less than the distance between the two valve seats 22. The rotating sleeve 27 and the elliptical disk 25 are integrally formed. Positioning surfaces are arranged on the upper and lower sides of the ball valve core 23. A limiting portion 42 is arranged at one end of the rotating sleeve 27 away from the elliptical disk 25. A gear 16 is installed on the limiting portion 42, and a pressure plate 41 is fixed to the limiting portion 42 by bolts. The first conductive sheet 24 is fixed to the pressure plate 41. A horizontal tube 18 for installing a transmission rod 29 is arranged on the valve body 9, and a plurality of rings meshing with the gear 16 are arranged on the transmission rod 29. shaped groove 32, and both ends of the transmission rod 29 are also provided with a first sealing plug 33 that is slidably sealed with the first oil supply channel 8 and the second oil supply channel 10. The ball valve core 23 can be supported by the two elliptical disks 25 by the positioning surface. When one end of the transmission rod 29 is pushed by the hydraulic oil, it can rely on the annular groove 32 to drive the gear 16 on the rotating sleeve 27 to rotate, so that the elliptical disk 25 can keep rotating synchronously, so that the distance between the two valve seats 22 can be adjusted by the elliptical disk 25. When the ball valve is closed or opened, the elliptical disk 25 can allow the two valve seats 22 to slide away from each other first, and then when the ball valve switches the open and closed state, the elliptical disk 25 rotates 90° to reset, and allows the valve seat 22 to contact the ball valve core 23 again.

[0036] The first oil supply assembly includes a first oil pump 1 and a first oil supply passage 8, and the second oil supply assembly includes a second oil pump 6 and a second oil supply passage 10. The two ends of the transmission rod 29 are respectively located in the first oil supply passage 8 and the second oil supply passage 10. The first oil pump 1 is used to supply oil to the first oil supply passage 8, so that the two transmission rods 29 slide toward the second oil supply passage 10 and drive the two rotating sleeves 27 to rotate 90° clockwise synchronously. The second oil pump 6 is used to supply oil to the second oil supply passage 10, so that the two transmission rods 29 slide toward the first oil supply passage 8 and drive the two rotating sleeves 27 to rotate 90° clockwise synchronously. The rotating sleeve 27 rotates 90° counterclockwise synchronously. The first oil supply channel 8 and the second oil supply channel 10 have the same structure. Both include an oil supply pipe 13, a second spring 35, a second sealing plug 34 and a plug 36. The oil supply pipe 13 is provided with an oil inlet pipe 14, an oil outlet pipe 15 and an oil guide pipe 37. The oil outlet pipe 15 and the oil guide pipe 37 are both provided with two. The oil inlet pipe 14 is located in the middle of the oil supply pipe 13, and the two oil outlet pipes 15 are located at both ends of the oil supply pipe 13. The oil guide pipe 37 is located between the oil outlet pipe 15 and the oil inlet pipe 14, and the oil guide pipe 37 is connected to the water pipe 13. The horizontal pipe 18 is fixedly connected, an oil inlet hole 39 is provided in the middle of the oil supply pipe 13, and an active cavity 38 is provided at both ends of the oil supply pipe 13. The second spring 35 and the second sealing plug 34 are located in the active cavity 38, and the second spring 35 exerts a force on the second sealing plug 34 to block the oil guide pipe 37 and the oil inlet hole 39, and allows the oil guide pipe 37 and the oil outlet pipe 15 to be in a connected state under normal conditions. One end of the oil inlet pipe 14 is connected to the first oil pump 1 or the second oil pump 6. When the first oil pump 1 or the second oil pump 6 supplies oil to the oil inlet pipe 14, the hydraulic oil first enters the The oil inlet hole 39 can push the two second sealing plugs 34 in the same oil inlet pipe 14 to move at the same time, so that the second spring 35 is compressed, so that the oil inlet hole 39, the oil guide pipe 37 and the horizontal pipe 18 are connected, and at the same time, the hydraulic oil in the guide pipe on the other oil supply pipe 13 can flow out from the oil outlet pipe 15, so that the hydraulic oil can be used to push the two transmission rods 29 to slide back and forth at the same time, and the gear 16 can be used to drive the rotating sleeve 27 and the elliptical disk 25 to rotate 90°, so that the two valve seats 22 move before the ball valve is opened or closed.

[0037] The power member 12 includes a valve stem 21, a worm wheel 30, a worm 31 and a motor 3. A mounting seat 20 for mounting the worm wheel 30 and the worm 31 is provided on the valve body 9. One end of the valve stem 21 is connected to the ball valve core 23, and the other end is connected to the worm wheel 30. One end of the worm 31 is fixedly connected to the output shaft of the motor 3, and the worm 31 is meshed with the worm wheel 30 for transmission. The first conductive sheet 24 and the second conductive sheet 28 are respectively provided on the rotating sleeve 27 and the worm wheel 30. The first conductive sheet 24 and the second conductive sheet 28 are respectively As the rotating sleeve 27 and the worm gear 30 rotate synchronously, the first switch 2 is mounted on the valve body 9, and the first conductive sheet 24 is electrically connected to the first switch 2, the second switch 4 and the third switch 5 are mounted on the mounting seat 20, and the second conductive sheet 28 is electrically connected to the second switch 4 or the third switch 5, the first switch 2 is coupled to the motor 3 to send a signal to control the motor 3 to rotate forward or reverse, and the second switch 4 and the third switch 5 are coupled to the second oil pump 6 to respectively send a signal to control the second oil pump 6 to supply oil to the second The channel 10 supplies oil to the signal, the first switch 2, the second switch 4 and the third switch 5 all include a trigger, a movable connecting rod 40 and a third spring 43. Two groups of movable connecting rods 40 and third springs 43 of the same switch are provided, and the third spring 43 applies a force on the movable connecting rod 40 close to the first conductive sheet 24 or the second conductive sheet 28, and drives the rotating sleeve 27 to rotate through the transmission rod 29. When the motor 3 drives the worm gear 30 to rotate, the first conductive sheet 24 and the second conductive sheet 28 respectively rotate synchronously with the rotating sleeve 27 and the worm gear 30, so that the first switch 2, the second switch 4 or the third switch 5 is turned on. The three switches are connected to the external power supply circuit, and the wires are connected to two groups of movable connecting rods 40 symmetrically distributed at 180 degrees. There are two conductive rods on the first conductive sheet 24 and the second conductive sheet 28, and the two can change the power-on state with the movable connecting rod 40 when rotating, so as to achieve the effect of controlling the power-on of different switches, and thereby controlling the motor 3 and the second oil pump 6 to work. Figure 2 and Figure 3 The wiring positions of the two contacts of the first switch 2 , the second switch 4 and the third switch 5 are shown, and they can be smoothly coupled with different movable wiring rods 40 .

[0038] The valve body 9 is provided with a positioning rod 17 coaxially arranged with the valve stem 21. The positioning rod 17 and one end of the valve stem 21 are provided with a protrusion 11 connected to the valve stem 21. The cross-section of the protrusion 11 is a non-circular structure. By adding the positioning rod 17, it and the valve stem 21 jointly support the ball valve core 23, which can increase the pressure on the ball valve core 23 when the ball valve is in the closed state, thereby ensuring the force stability of the connection structure between the ball valve core 23 and the valve stem 21.

[0039] A ball valve includes an opening and closing control system, and the specific working principle is as follows:

[0040] S1: After receiving the valve opening signal, the first oil pump 1 supplies oil to the first oil supply channel 8 to make the two rotating sleeves 27 rotate 90° clockwise synchronously, and the two valve seats 22 are driven by the elliptical disk 25 to move away from each other, and at the same time, the first conductive sheet 24 changes from the disconnected state to the connected state with the first switch 2;

[0041] S2: After the first switch 2 is turned on, a signal is sent to control the operation of the first motor 3. When the first switch 2 is powered on an odd number of times, the first motor 3 drives the worm gear 30 to rotate 90°, so that the ball valve is opened. At the same time, the second conductive sheet 28 changes from the state of being connected to the second switch 4 to the state of being connected to the third switch 5.

[0042] S3: After the third switch 5 is turned on, it sends a signal to control the operation of the second oil pump 6, and the second oil pump 6 supplies oil to the second oil supply channel 10 to make the two rotating sleeves 27 rotate 90° counterclockwise synchronously, and make the two valve seats 22 contact the ball valve core 23, and at the same time, the first conductive sheet 24 and the first switch 2 are changed from the connected state to the disconnected state;

[0043] S4: After receiving the valve closing signal, the first oil pump 1 supplies oil to the first oil supply channel 8 to make the two rotating sleeves 27 synchronously rotate 90° clockwise, and the two valve seats 22 are driven by the elliptical disk 25 to move away from each other, and at the same time, the first conductive sheet 24 changes from the disconnected state to the connected state with the first switch 2;

[0044] S5: After the first switch 2 is turned on, a signal for controlling the operation of the first motor 3 is sent out, and when the first switch 2 is powered on an even number of times, the first motor 3 drives the worm gear 30 to rotate 90° again, so that the ball valve is closed, and at the same time, the second conductive sheet 28 changes from the state of being connected to the third switch 5 to the state of being connected to the second switch 4;

[0045] S6: After the second switch 4 is turned on, it sends out a signal to control the operation of the second oil pump 6. The second oil pump 6 supplies oil to the second oil supply channel 10 to make the two rotating sleeves 27 rotate 90° counterclockwise synchronously, and make the two valve seats 22 contact the ball valve core 23. At the same time, the first conductive sheet 24 and the first switch 2 are changed from the connected state to the disconnected state.

[0046] In this embodiment, when the first switch 2 is powered on, a trigger generates an electrical signal for controlling the operation of the motor 3, and the electrical signal is counted in a cumulative form. A counter can be used. When the power-on count is an odd number, the first switch 2 controls the motor 3 to rotate forward, thereby enabling the ball valve to be opened. When the power-on count is an even number, the first switch 2 controls the motor 3 to reverse, so that the motor 3 drives the ball valve core 23 to rotate forward and backward once to close the ball valve. This control principle is simple, so it will not be described in detail.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A ball valve opening and closing control system, characterized in that: include: A valve assembly, comprising a valve body (9), a ball valve core (23), a first spring (26), a valve seat (22) and a power member (12), wherein the ball valve core (23) is located in the valve seat (22), two valve seats (22) are provided, the first spring (26) applies a force to the valve seat (22) to resist the ball valve core (23), and the power member (12) is mounted on the valve body (9) and is used to drive the ball valve core (23) to rotate; An actuator (19) is provided in two groups and is rotatably mounted on the upper and lower sides of the valve body (9) corresponding to the ball valve core (23), the two groups of the actuator (19) being located between the two valve seats (22) and adjusting the distance between the two valve seats (22) during the rotation of the actuator (19); A hydraulic transmission assembly (7), comprising a first oil supply assembly, a second oil supply assembly and a transmission rod (29), wherein the transmission rod (29) is provided in two groups and is horizontally slidably arranged in the valve body (9), the first oil supply assembly and the second oil supply assembly are respectively located on both sides of the two groups of transmission rods (29), and when working, the two use hydraulic oil to apply two thrusts in opposite directions to the same group of transmission rods (29) in turn, so that the transmission rod (29) drives the actuator (19) to rotate forward or reverse; A control unit, comprising a first switch (2), a second switch (4) and a third switch (5); the first oil supply component starts to work after receiving a ball valve opening or closing signal; the actuator component (19) controls the closing of the first switch (2); and the first switch (2) sends an electrical signal to control the operation of a power component (12) after closing; the power component (12) controls the closing of the second switch (4) or the third switch (5); and the second switch (4) or the third switch (5) sends an electrical signal to control the operation of the second oil supply component after closing; the actuator component (19) comprises a rotating sleeve (27) and an elliptical disk (25); the elliptical disk (25) is arranged on the rotating sleeve (27) and is located between two valve seats (22); the major axis length of the elliptical disk (25) is greater than the major axis length of the two valve seats (22). The distance between the two valve seats (22) is smaller than the distance between the two valve seats (22), the rotating sleeve (27) and the elliptical disc (25) are integrally formed, the upper and lower sides of the ball valve core (23) are provided with positioning surfaces, the end of the rotating sleeve (27) away from the elliptical disc (25) is provided with a limiting portion (42), a gear (16) is mounted on the limiting portion (42), and a pressure plate (41) is fixed to the limiting portion (42) by bolts, the valve body (9) is provided with a horizontal tube (18) for mounting a transmission rod (29), the transmission rod (29) is provided with a plurality of annular grooves (32) meshing with the gear (16), and first sealing plugs (33) for slidingly sealing with the first oil supply channel (8) and the second oil supply channel (10) are also provided at both ends of the transmission rod (29).

2. A ball valve opening and closing control system according to claim 1, characterized in that: The power member (12) comprises a valve stem (21), a worm wheel (30), a worm (31) and a motor (3); a mounting seat (20) for mounting the worm wheel (30) and the worm (31) is provided on the valve body (9); one end of the valve stem (21) is connected to the ball valve core (23), and the other end is connected to the worm wheel (30); one end of the worm (31) is fixedly connected to the output shaft of the motor (3), and the worm (31) and the worm wheel (30) are meshed for transmission.

3. A ball valve opening and closing control system according to claim 2, characterized in that: The first oil supply assembly comprises a first oil pump (1) and a first oil supply passage (8); the second oil supply assembly comprises a second oil pump (6) and a second oil supply passage (10); two ends of the transmission rod (29) are respectively located in the first oil supply passage (8) and the second oil supply passage (10); the first oil pump (1) is used to supply oil to the first oil supply passage (8), so that the two transmission rods (29) slide toward the second oil supply passage (10) and drive the two rotating sleeves (27) to synchronously rotate 90° clockwise; the second oil pump (6) is used to supply oil to the second oil supply passage (10), so that the two transmission rods (29) slide toward the first oil supply passage (8) and drive the two rotating sleeves (27) to synchronously rotate 90° counterclockwise.

4. A ball valve opening and closing control system according to claim 3, characterized in that: The rotating sleeve (27) and the worm gear (30) are respectively provided with a first conductive sheet (24) and a second conductive sheet (28), the first conductive sheet (24) and the second conductive sheet (28) rotate synchronously with the rotating sleeve (27) and the worm gear (30), the first switch (2) is mounted on the valve body (9), and the first conductive sheet (24) is electrically connected to the first switch (2), the second switch (4) and the third switch (5) are mounted on the mounting seat (20), and the second conductive sheet (28) is electrically connected to the second switch (4) or the third switch (5), the first switch (2) is coupled to the motor (3) to send a signal for controlling the motor (3) to rotate forward or reverse, and the second switch (4) and the third switch (5) are coupled to the second oil pump (6) to send a signal for controlling the second oil pump (6) to supply oil to the second oil supply channel (10).

5. A ball valve opening and closing control system according to claim 4, characterized in that: The first oil supply passage (8) and the second oil supply passage (10) have the same structure, and both comprise an oil supply pipe (13), a second spring (35), a second sealing plug (34) and a plug (36). The oil supply pipe (13) is provided with an oil inlet pipe (14), an oil outlet pipe (15) and an oil guide pipe (37). Two of the oil outlet pipes (15) and the oil guide pipe (37) are provided. The oil inlet pipe (14) is located in the middle of the oil supply pipe (13), the two oil outlet pipes (15) are located at both ends of the oil supply pipe (13), and the oil guide pipe (37) is located at the An oil outlet pipe (15) and an oil inlet pipe (14) are connected between the oil guide pipe (37) and the horizontal pipe (18). An oil inlet hole (39) is provided in the middle of the oil supply pipe (13), and movable chambers (38) are provided at both ends of the oil supply pipe (13). The second spring (35) and the second sealing plug (34) are located in the movable chamber (38), and the second spring (35) exerts a force on the second sealing plug (34) to block the oil guide pipe (37) and the oil inlet hole (39), and the oil guide pipe (37) and the oil outlet pipe (15) are in a connected state under normal conditions.

6. A ball valve opening and closing control system according to claim 4, characterized in that: The first switch (2), the second switch (4) and the third switch (5) all comprise a trigger, a movable connecting rod (40) and a third spring (43); two sets of the movable connecting rod (40) and the third spring (43) are provided in the same switch, and the third spring (43) applies a force to the movable connecting rod (40) to approach the first conductive sheet (24) or the second conductive sheet (28).

7. A ball valve opening and closing control system according to claim 2, characterized in that: The valve body (9) is provided with a positioning rod (17) coaxially arranged with the valve stem (21); one end of the positioning rod (17) and the valve stem (21) is provided with a protrusion (11) connected to the valve stem (21); and the cross section of the protrusion (11) is a non-circular structure.

8. A ball valve, characterized in that: Comprising an opening and closing control system as described in any one of claims 1-7.

Images