Driving mechanism of double-channel valve

Abstract

The invention discloses a driving mechanism of a double-channel valve, and relates to the technical field of driving mechanisms of double-channel valves, the driving mechanism comprises a transmission shaft, a support, a middle nut and a lower nut, a stroke gap along the axis of the transmission shaft is formed between the middle nut and the transmission shaft, and the middle nut and the lower nut are connected through threads. A first limiting component is arranged between the middle nut and the transmission shaft, a second limiting component is arranged between the middle nut and the lower nut, the second limiting component is lower than the first limiting component, a control piece for controlling the second limiting component to rotate is further installed on the lower nut, and the middle nut is sleeved with a protective sleeve. The protective sleeve and the support are connected through a limiting piece, and a V-shaped groove is formed in the outer wall of the protective sleeve. The control valve has the advantages that the interior of the valve body is controlled, control complexity and complexity are reduced, cost is reduced, and meanwhile the occupancy rate of external space is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of driving mechanisms of dual-channel valves, and in particular to a driving mechanism of a dual-channel valve. Background Art

[0002] It is known that a valve is produced in the prior art, which needs to be moved vertically upward in advance, then the valve disc is rotated 90 degrees, and finally moved vertically downward to realize the opening or closing operation of the valve.

[0003] like Figure 1 As shown, the existing driving mechanism usually has a cylinder bracket installed on the outside of the bracket, and a lifting cylinder and a rotating cylinder are installed on the bracket. The valve core needs to be lifted as a whole by the lifting cylinder, and then the valve core is driven to rotate ninety degrees by the rotating cylinder to achieve the overall state switching. This method requires at least two cylinders, and a complex driving linkage mechanism is set between the cylinders. Both in terms of volume and control, the complexity and cost are increased compared with the control of a single mechanism. Summary of the invention

[0004] In order to improve the problems of complex control structure and high cost, the present application provides a driving mechanism for a dual-channel valve.

[0005] The driving mechanism of a dual-channel valve provided in the present application adopts the following technical solution: A driving mechanism for a dual-channel valve includes a transmission shaft, a bracket, a middle nut and a lower nut, a travel gap along the axis of the transmission shaft is formed between the middle nut and the transmission shaft, the middle nut and the lower nut are connected by threads, a first limiting component is arranged between the middle nut and the transmission shaft, a second limiting component is arranged between the middle nut and the lower nut, and the second limiting component is lower than the first limiting component, and a control component for controlling the rotation of the second limiting component is also installed on the lower nut, a protective sleeve is provided on the middle nut, the protective sleeve and the bracket are connected by a limiting component, and a V-shaped groove is opened on the outer wall of the protective sleeve.

[0006] By adopting the above technical solution, in the initial state, the action that the drive mechanism can perform is that when the drive motor rotates counterclockwise all the time, the drive mechanism can realize the action process of driving the transmission shaft to first lift and open the flow channel, then rotate 90° counterclockwise after lifting, and then drop back to close the flow channel. The drive motor drives the transmission shaft to rotate counterclockwise through the spline connection. Since the axial displacement of the transmission shaft itself is limited by the protective sleeve and the fixed nut, when the transmission shaft rotates counterclockwise, the other end of the transmission shaft drives the middle nut to lift through the thread, and the ball socket groove opened on the transmission shaft is aligned with the ball hole of the middle nut through rotation. The steel ball is squeezed by the V-groove wall of the protective sleeve and enters the ball socket groove of the transmission shaft through the ball hole of the middle nut. The transmission shaft and the middle nut are locked by the steel ball at this time. At this time, the lifting stroke between the transmission shaft and the middle nut has been completed, and the valve lifting is completed; because the transmission shaft and the middle nut are locked by the steel ball at this time, when When the driving motor continues to rotate counterclockwise, it will drive the middle nut to rotate counterclockwise; the lower ball socket groove of the middle nut and the ball hole of the lower nut are locked by the steel ball, and the lower nut and the transmission shaft are connected by threads; therefore, the transmission shaft can rotate counterclockwise at this time, and after the middle nut and the lower nut rotate 90°, the ball hole of the lower nut and the V-groove of the protective sleeve can be aligned and overlapped, and the indicator and the limit block connected to the bracket are engaged with each other to complete the limit, and the steel ball in the ball socket of the middle nut is forcibly sheared from the ball socket through the ball hole of the lower nut into the V-groove of the protective sleeve; the lower nut and the middle nut are disengaged, and the lower nut and the protective sleeve are locked by the steel ball. At this time, the driving motor continues to rotate counterclockwise, driving the transmission shaft and the middle nut to rotate counterclockwise, and the lower nut and the middle nut can be disengaged through the thread, so as to achieve the purpose of lowering the transmission shaft. In the closed valve state, the action that the driving mechanism can perform is that when the driving motor rotates clockwise all the time, the driving mechanism can realize the action process of driving the transmission shaft to first lift and disengage from the sealing surface, and then rotate clockwise 90° after lifting, and then drop back to fit the sealing surface. The driving motor drives the transmission shaft to rotate clockwise through the spline connection. Since the axial displacement of the transmission shaft itself is limited by the protective sleeve and the fixed nut, when the transmission shaft rotates clockwise, the other end of the transmission shaft drives the middle nut to lift through the thread, and the middle nut and the lower nut are locked by a steel ball. Therefore, the ball socket groove opened on the lower nut is aligned with the V-groove of the protective sleeve through rotation and lifting, and the steel ball is squeezed by the groove wall of the V-groove of the protective sleeve and enters the ball socket groove of the middle nut through the ball hole of the lower nut. At this time, the lower nut and the middle nut are locked by the steel ball.At this time, the lifting stroke between the middle nut and the lower nut has been completed, and the valve lifting is completed; because the transmission shaft and the middle nut are locked by the steel ball at this time, when the drive motor continues to rotate clockwise, it will drive the middle nut to rotate clockwise; and the upper ball hole of the middle nut and the ball socket groove of the transmission shaft are locked by the steel ball, the lower ball socket groove of the middle nut and the ball hole of the lower nut are locked by the steel ball, and the lower nut is connected to the transmission shaft through a thread; therefore, the transmission shaft can rotate clockwise at this time, and after the middle nut and the lower nut are rotated 90°, the ball hole of the middle nut and the V-groove of the protective sleeve can be aligned and overlapped, and at this time the indicator and the limit block connected to the bracket engage with each other to complete the limit, and forcibly shear the steel ball in the ball socket of the transmission shaft from the ball socket through the ball hole of the middle nut into the V-groove of the protective sleeve; the middle nut is disengaged from the transmission shaft, and the middle nut and the protective sleeve are locked by the steel ball. At this time, the driving motor continues to rotate clockwise, driving the transmission shaft to rotate clockwise, and the middle nut and the transmission shaft can be disengaged through the thread, thereby achieving the purpose of lowering the transmission shaft and realizing the on-off effect of the valve, simplifying the complexity and cumbersomeness of the control structure set outside the valve, and greatly controlling the cost.

[0007] Optionally, the first limiting component includes a first steel ball, a first slot is formed on the middle nut, a first ball socket is formed on the transmission shaft, the first steel ball is arranged in a rolling manner in the first slot, and the first ball socket and the first steel ball slot are in contact.

[0008] By adopting the above technical solution, during the rotation of the transmission shaft, the transmission shaft drives the middle nut to lift through the thread, and the first ball socket and the first clamping groove on the transmission shaft are aligned to facilitate the first steel ball to be squeezed from the first clamping groove into the first ball socket, thereby locking the transmission shaft and the middle nut.

[0009] Optionally, the second limiting component includes a second steel ball, a second clamping groove is provided on the lower nut, a second ball socket groove is also provided on the lower nut, the second steel ball is rotatably arranged in the second ball socket groove, and the second clamping groove and the second steel ball are in contact.

[0010] By adopting the above technical solution, in the valve closing state, the transmission shaft rotates clockwise, and under the action of the first steel ball, the middle nut is driven to rotate clockwise at the same time. The second steel ball enters between the middle nut and the lower nut, and the lower nut rotates clockwise under the action of the second steel ball.

[0011] Optionally, the axis of the first slot and the center line of the first ball socket form a 90 degree angle.

[0012] By adopting the above technical solution, after the first ball socket is rotated ninety degrees clockwise, the first steel ball in the first clamping groove overlaps with the first ball socket.

[0013] Optionally, the limiting member includes a limiting screw and a locking nut, the limiting screw passes through the bracket and the protective sleeve and is threadedly connected, and the locking nut and the limiting screw are threadedly matched.

[0014] By adopting the above technical solution, the limit screw penetrates the bracket and cooperates with the protective sleeve, and the limit screw exposed outside the bracket is locked with a lock nut, so that the protective sleeve is fastened in a fixed position inside the bracket.

[0015] Optionally, the control component includes a limit seat and a cylindrical pin, the limit seat and the lower nut are connected by the cylindrical pin, and the cylindrical pin passes through the limit seat and the limit grooves opened on the lower nut to tighten.

[0016] By adopting the above technical solution, the cylindrical pin realizes integrated rotation of the valve sleeve and the fixed fit.

[0017] Optionally, the stroke distance is 12 mm and the stroke gap is 0.1-0.3 mm.

[0018] By adopting the above technical solution, the distance of the travel gap is equal to the height difference between the first ball socket groove and the first clamping groove.

[0019] Optionally, the rotation angle range of the limit seat is 0~90°.

[0020] By adopting the above technical solution, the maximum range of the limit seat to rotate clockwise or counterclockwise is 90°, and the limit positions on both sides abut against the bracket.

[0021] Optionally, an oil hole is provided on the bracket, and the oil hole is connected to a channel through which the first limiting component and the second limiting component move.

[0022] Through the above technical solution, lubricating oil is injected into the oil hole to lubricate the first steel ball and the second steel ball inside the bracket, reduce internal friction, achieve lubrication effect, and also lubricate the bearing.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: The action that the drive mechanism can perform is that when the drive motor rotates counterclockwise all the time, the drive mechanism can drive the transmission shaft to first lift and open the flow channel, then rotate 90° counterclockwise after lifting, and then fall back to close the flow channel, thus realizing the overall valve opening action process; The action that can be performed by the drive mechanism is that when the drive motor rotates clockwise all the time, the drive mechanism can drive the transmission shaft to first lift up and separate from the sealing surface, then rotate 90° clockwise after lifting, and then drop back to fit the sealing surface, thereby realizing the overall valve closing action process; thereby realizing the valve control effect of the overall drive mechanism, improving the complexity and cumbersomeness of the traditional control structure, and greatly reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of the present application showing the prior art.

[0026] Figure 2 It is a cross-sectional view showing the driving mechanism of the dual-channel valve of the present application.

[0027] Figure 3 This application shows a cross-sectional view of the first limiting component and the second limiting component in the initial state.

[0028] Figure 4 This application shows a cross-sectional view of the first limiting component and the second limiting component when the first steel ball is located in the first slot.

[0029] Figure 5 This application shows a cross-sectional view of the first limit component and the second limit component, showing the first steel ball rolling into the first ball socket.

[0030] Figure 6 This application shows that the second steel ball is located in the second ball socket, and a cross-sectional view of the first limiting component and the second limiting component.

[0031] Figure 7 This application shows a cross-sectional view of the first limiting component and the second limiting component where the second steel ball is located in the second slot.

[0032] Figure 8 This application shows a cross-sectional view of the first limiting component and the second limiting component.

[0033] 1. Lifting cylinder; 2. Cylinder bracket; 3. Rotating cylinder; 4. Valve cover; 5. Bracket support body; 6. Main valve body; 100. Transmission shaft; 101. Bracket; 102. Middle nut; 103. Lower nut; 104. First limiting component; 105. Second limiting component; 106. Control component; 1041. First steel ball; 1042. First slot; 1043. First ball socket; 1051. Second steel ball; 1052. Second slot; 1053. Second ball socket; 1061. Limit seat; 1062. Cylindrical pin; 107. Oil hole; 1070. Protective cover; 1071. V-groove; 108. Limit component; 1081. Limit screw; 1082. Anti-loosening nut. DETAILED DESCRIPTION

[0034] The following is combined with Figure 2 To Attachment Figure 8 This application is described in further detail.

[0035] The embodiment of the present application discloses a driving mechanism for a dual-channel valve.

[0036] Reference Figure 2 As shown, it includes a transmission shaft 100, a bracket 101, a middle nut 102 and a lower nut 103. A travel gap along the axis of the transmission shaft 100 is formed between the middle nut 102 and the transmission shaft 100, the travel distance is 12 mm, and the travel gap is 0.1-0.3 mm. The middle nut 102 and the lower nut 103 are connected by threads. A first limiting component 104 is arranged between the middle nut 102 and the transmission shaft 100, and a second limiting component 105 is arranged between the middle nut 102 and the lower nut 103. The transmission shaft 100 itself makes a rotational motion, the first limiting component 104 and the second limiting component 105 are stationary, and the second limiting component 105 is lower than the first limiting component 104.

[0037] A control member 106 for controlling the rotation of the second limiting member 105 is also installed on the lower nut 103. The control member 106 consists of a limiting seat 1061 and a cylindrical pin 1062. The limiting seat 1061 and the lower nut 103 are connected by the cylindrical pin 1062. The limiting seat 1061 has a rotation angle range of 0 to 90°. The cylindrical pin 1062 passes through the limiting seat 1061 and the limiting groove opened on the lower nut 103 to tighten.

[0038] A protective sleeve 1070 is sleeved on the middle nut 102, and the protective sleeve 1070 is connected to the bracket 101 through a stopper 108, and a V-shaped groove 1071 is provided on the outer wall of the protective sleeve 1070. The stopper 108 includes a stop screw 1081 and a lock nut 1082, the stop screw 1081 passes through the bracket 101 and is connected to the protective sleeve 1070 by threads, and the lock nut 1082 is threadedly matched with the stop screw 1081, and the bracket 101 and the protective sleeve 1070 are locked together by the stop screw 1081 and the lock nut 1082, and the protective sleeve 1070 located in the bracket 101 remains in place.

[0039] The first limiting component 104 includes a first steel ball 1041, a first slot 1042 is provided on the middle nut 102, and a first ball socket 1043 is provided on the transmission shaft 100. The axis of the first slot 1042 and the center line of the first ball socket 1043 form a 90 degree angle. After the first ball socket 1043 rotates 90 degrees clockwise, the first steel ball 1041 in the first slot 1042 coincides with the first ball socket 1043. The first steel ball 1041 is arranged in a rolling manner in the first slot 1042. The first ball socket 1043 is in contact with the slot of the first steel ball 1041. The first ball socket 1043 is hemispherical, and the first slot 1042 is a V-shaped groove ball hole. The shape and specification of the first steel ball 1041 are the same as those of the first ball socket 1043, and the shape and specification of the first ball socket 1043 are the same as those of the first steel ball 1041.

[0040] The second limiting component 105 includes a second steel ball 1051, a second slot 1052 is provided on the lower nut 103, and a second ball socket 1053 is also provided on the lower nut 103. The second steel ball 1051 is rotatably arranged in the second ball socket 1053, and the second slot 1052 and the second steel ball 1051 are in contact with each other. In the valve closing state, the valve stem rotates clockwise, and under the action of the first steel ball 1041, the middle nut 102 is driven to rotate clockwise at the same time. The second steel ball 1051 enters between the middle nut 102 and the lower nut 103, and the lower nut 103 rotates clockwise under the action of the second steel ball 1051.

[0041] The valve opening process is as follows: Initial state: The action that can be performed by the drive mechanism is that when the drive motor rotates counterclockwise all the time, the drive mechanism can drive the transmission shaft 100 to first lift up to open the flow channel, then rotate counterclockwise 90° after lifting, and then drop back to close the flow channel.

[0042] The overall initial state of the drive device is as follows Figure 3 As shown; The driving motor drives the transmission shaft 100 to rotate counterclockwise through the spline connection. Since the axial displacement of the transmission shaft 100 itself is limited by the protective sleeve 1070 and the fixing nut, when the transmission shaft 100 rotates counterclockwise, the other end of the transmission shaft 100 drives the middle nut 102 to rise through the thread, and the ball socket groove on the transmission shaft 100 is aligned with the ball hole of the middle nut 102 through rotation. Figure 4 As shown; The steel ball is squeezed by the protective sleeve 1070 and the wall of the V-shaped groove 1071, and enters the ball socket groove of the transmission shaft 100 through the ball hole of the middle nut 102. The transmission shaft 100 and the middle nut 102 are locked by the steel ball at this time. Figure 5 As shown; At this time, the lifting stroke between the transmission shaft 100 and the middle nut 102 has been completed, and the valve lifting is completed; because the transmission shaft 100 and the middle nut 102 are locked by the steel ball at this time, when the drive motor continues to rotate counterclockwise, it will drive the middle nut 102 to rotate counterclockwise; and the ball socket groove under the middle nut 102 and the ball hole of the lower nut 103 are locked by the steel ball, and the lower nut 103 is connected to the transmission shaft 100 through a thread; therefore, at this time, the transmission shaft 100 can rotate counterclockwise, such as Figure 6 As shown; After the middle nut 102 and the lower nut 103 are rotated 90°, the ball hole of the lower nut 103 can be aligned with the protective sleeve 1070 and the V-shaped groove 1071. At this time, the indicator and the limit block connected to the bracket 101 engage with each other to complete the limit, and the steel ball in the ball socket of the middle nut 102 is forcibly sheared from the ball socket through the ball hole of the lower nut 103 into the protective sleeve 1070 and the V-shaped groove 1071; the lower nut 103 is disengaged from the middle nut 102, and the lower nut 103 and the protective sleeve 1070 are locked by the steel ball. Figure 7 As shown; At this time, the driving motor continues to rotate counterclockwise, driving the transmission shaft 100 and the middle nut 102 to rotate counterclockwise, and the lower nut 103 and the middle nut 102 can be disengaged through the thread, so that the transmission shaft 100 is lowered. Figure 8 As shown; The valve closing process is as follows: Initial state: The action that can be performed by the driving mechanism is that when the driving motor rotates clockwise all the time, the driving mechanism can drive the transmission shaft 100 to first lift up and separate from the sealing surface, then rotate clockwise 90° after lifting, and then drop back to fit the sealing surface.

[0043] The overall initial state of the drive device is as follows Figure 8 As shown; The driving motor drives the transmission shaft 100 to rotate clockwise through the spline connection. Since the axial displacement of the transmission shaft 100 itself is limited by the protective sleeve 1070 and the fixing nut, when the transmission shaft 100 rotates clockwise, the other end of the transmission shaft 100 drives the middle nut 102 to be lifted through the thread. The middle nut 102 and the lower nut 103 are locked by a steel ball. Therefore, the ball socket groove on the lower nut 103 is aligned with the protective sleeve 1070 and the V-shaped groove 1071 through rotation and lifting. Figure 7 As shown; The steel ball is squeezed by the protective sleeve 1070 and the groove wall of the V-shaped groove 1071, and enters the ball socket groove of the middle nut 102 through the ball hole of the lower nut 103. At this time, the lower nut 103 and the middle nut 102 are locked by the steel ball. Figure 6 As shown; At this time, the lifting stroke between the middle nut 102 and the lower nut 103 has been completed, and the valve lifting is completed; because the transmission shaft 100 and the middle nut 102 are locked by the steel ball at this time, when the drive motor continues to rotate clockwise, it will drive the middle nut 102 to rotate clockwise; and the ball hole on the middle nut 102 and the ball socket groove of the transmission shaft 100 are locked by the steel ball, and the ball socket groove under the middle nut 102 and the ball hole of the lower nut 103 are locked by the steel ball, and the lower nut 103 is connected to the transmission shaft 100 through a thread; therefore, the transmission shaft 100 can rotate clockwise at this time, such as Figure 5 As shown; After the middle nut 102 and the lower nut 103 are rotated 90°, the ball hole of the middle nut 102 can be aligned with the protective sleeve 1070 and the V-shaped groove 1071. At this time, the indicator and the limit block connected to the bracket 101 are engaged with each other to complete the limit, and the steel ball in the ball socket of the transmission shaft 100 is forcibly sheared from the ball socket through the ball hole of the middle nut 102 into the protective sleeve 1070 and the V-shaped groove 1071; the middle nut 102 is disengaged from the transmission shaft 100, and the middle nut 102 and the protective sleeve 1070 are locked by the steel ball. Figure 4 As shown; At this time, the driving motor continues to rotate clockwise, driving the transmission shaft 100 to rotate clockwise, and the middle nut 102 and the transmission shaft 100 can be disengaged through the thread, so that the transmission shaft 100 can be lowered. Figure 3 shown.

[0044] An oil hole is provided on the bracket, and the oil hole is connected to the movable channels of the first limiting component and the second limiting component. Lubricating oil is poured into the oil hole to lubricate the first steel ball and the second steel ball inside the bracket, reduce friction during rotation, improve the lubrication effect, and also lubricate the bearing.

[0045] The implementation principle of the driving mechanism of a dual-channel valve in the embodiment of the present application is as follows: a driving motor is connected to the end of the transmission shaft 100, and the driving motor drives the transmission shaft 100 to rotate, and the lower nut 103 and the middle nut 102 rotate together. After the transmission shaft 100 rotates, the middle nut 102 is driven to rotate counterclockwise, and the middle nut 102 rotates upward to reduce the stroke gap formed between the middle nut 102 and the transmission shaft 100, and the first steel ball 1041 located in the first clamping groove 1042 rotates counterclockwise by ninety degrees to the first ball socket groove 1043, the first limiting mechanism does not move, the transmission shaft makes a rotary motion, and the ball socket groove is aligned with the ball hole of the middle nut, thereby realizing the upward movement of the overall driving mechanism; the driving motor continues to drive the transmission shaft 100 to rotate, and after the stroke gap is eliminated, the second The limiting component 105 rotates ninety degrees along the axis of the transmission shaft 100, and the limiting seat 1061 rotates ninety degrees counterclockwise and presses against the bracket 101 to limit the position, so that the second steel ball 1051 is squeezed from the position between the middle nut 102 and the lower nut 103 to the position of the lower nut 103, and the steel ball is squeezed into the V-groove of the protective sleeve. The thread between the middle nut 102 and the transmission shaft 100 and the thread between the middle nut 102 and the lower nut 103 are opposite in direction. When the driving motor continues to rotate counterclockwise, the lower nut 103, the middle nut 102 and the second steel ball 1051 move downward together. After the thread is disengaged, only the lower nut moves downward, thereby realizing the controlled opening and closing of the valve, simplifying the complexity and cumbersomeness of the control structure set outside the valve, reducing the occupied space and volume, and greatly controlling the cost requirements.

[0046] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A driving mechanism for a dual-channel valve, characterized in that: The invention comprises a transmission shaft (100), a bracket (101), a middle nut (102) and a lower nut (103); a travel gap along the axis of the transmission shaft (100) is formed between the middle nut (102) and the transmission shaft (100); the middle nut (102) and the lower nut (103) are connected by threads; a first limiting component (104) is arranged between the middle nut (102) and the transmission shaft (100); and a second limiting component (104) is arranged between the middle nut (102) and the lower nut (103). The second limiting component (105) is lower than the first limiting component (104); the lower nut (103) is also provided with a control component (106) for controlling the rotation of the second limiting component (105); a protective sleeve (1070) is sleeved on the middle nut (102); the protective sleeve (1070) and the bracket (101) are connected via a limiting component (108); and a V-shaped groove (1071) is provided on the outer wall of the protective sleeve (1070).

2. A driving mechanism for a dual-channel valve according to claim 1, characterized in that: The first limiting component (104) comprises a first steel ball (1041), the middle nut (102) is provided with a first slot (1042), the transmission shaft (100) is provided with a first ball socket slot (1043), and the first steel ball (1041) is rollingly arranged in the first slot (1042).

3. A driving mechanism for a dual-channel valve according to claim 1, characterized in that: The second limiting component (105) includes a second steel ball (1051), a second clamping groove (1052) is provided on the lower nut (103), and a second ball socket groove (1053) is also provided on the lower nut (103). The second steel ball (1051) is rotatably arranged in the second ball socket groove (1053), and the second clamping groove (1052) and the second steel ball (1051) are in contact.

4. A driving mechanism for a dual-channel valve according to claim 2, characterized in that: The axis of the first clamping groove (1042) and the center line of the first ball socket groove (1043) form a 90-degree angle.

5. The driving mechanism of a dual-channel valve according to claim 1, characterized in that: The limiting member (108) comprises a limiting screw (1081) and a locking nut (1082); the limiting screw (1081) passes through the bracket (101) and the protective sleeve (1070) and is connected by threads; the locking nut (1082) and the limiting screw (1081) are threadedly matched.

6. A driving mechanism for a dual-channel valve according to claim 1, characterized in that: The control member (106) comprises a limiting seat (1061) and a cylindrical pin (1062); the limiting seat (1061) and the lower nut (103) are connected via the cylindrical pin (1062); the cylindrical pin (1062) passes through limiting grooves provided on the limiting seat (1061) and the lower nut (103) and is pressed against them.

7. A driving mechanism for a dual-channel valve according to claim 1, characterized in that: The stroke distance is 12 mm, and the stroke gap is 0.1-0.3 mm.

8. The driving mechanism of a dual-channel valve according to claim 6, characterized in that: The rotation angle range of the limiting seat (1061) is 0 to 90 degrees.

9. The driving mechanism of a dual-channel valve according to claim 1, characterized in that: The bracket (101) is provided with an oil hole (107), and the oil hole (107) is connected to a channel through which the first limiting component (104) and the second limiting component (105) move.

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