Driving mechanism for opening and closing valve body

Abstract

The utility model relates to a driving mechanism for opening and closing a valve body, which comprises a shell, a driving motor, a main transmission assembly, a secondary transmission gear and a power output assembly, the driving motor drives the main transmission assembly, the secondary transmission gear and the power output assembly to rotate, and the driving mechanism further comprises an auxiliary detection assembly and a control assembly, the auxiliary detection assembly comprises a synchromesh gear and a magnetic bead, the synchromesh gear is rotationally borne on the shell, the synchromesh gear is meshed with the secondary transmission gear, the synchromesh gear synchronously rotates along with the secondary transmission gear, the magnetic bead and the synchromesh gear are coaxially fixed, the control assembly comprises an encoder and a controller, and the encoder and the controller are arranged on the shell. The encoder is used for detecting rotation information of the magnetic beads, the controller is used for adjusting the working state of the driving motor, and the controller, the encoder and the driving motor are electrically connected.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a drive mechanism for opening and closing a valve body. Background Art

[0002] The valve body is a device used to control the flow of fluids (liquids, gases, steam, etc.). It can control the flow rate and pressure of the fluid. It has the advantages of convenient operation and high reliability. It is widely used in industrial production, natural gas transportation, water supply systems and other fields.

[0003] For example, in a water supply system, the valve body can play the role of pressure regulation, flow control and emergency cut-off. When the flow or pressure in the water supply pipeline is too large, or the water supply system needs to be urgently cut off, the above functions can be achieved by controlling the opening and closing of the valve of the valve body.

[0004] In actual applications of the valve body, when the valve needs to be closed for some emergencies or when the fluid flow needs to be urgently controlled, the above purpose can be achieved by controlling the rotation of the valve shaft through the cooperation of the existing valve body with the controller (for example: micro switch) and the control terminal.

[0005] However, in actual applications, the controller may have errors in judging the current position of the valve, which may cause the controller to control the valve incorrectly, resulting in the valve not being able to close completely or poor flow control effect.

[0006] In order to improve the accuracy of valve body flow control, further improvement is needed. Utility Model Content

[0007] In order to improve the accuracy of flow control of the valve body, the present application provides a driving mechanism for opening and closing the valve body.

[0008] The present application provides a driving mechanism for opening and closing a valve body, which adopts the following technical solution:

[0009] A driving mechanism for opening and closing a valve body comprises a housing and a driving motor rotatably carried on the housing, a main transmission assembly, a secondary transmission gear and a power output assembly, wherein the driving motor drives the main transmission assembly, the secondary transmission gear and the power output assembly to rotate, and further comprises an auxiliary detection assembly and a control assembly, wherein the auxiliary detection assembly comprises a synchronous gear and a magnetic bead, wherein the synchronous gear is rotatably carried on the housing, the synchronous gear is meshed with the secondary transmission gear, the synchronous gear rotates synchronously with the secondary transmission gear, the magnetic bead is coaxially fixed with the synchronous gear, and the control assembly comprises an encoder and a controller, wherein the encoder and the controller are arranged on the housing, the encoder is used to detect the rotation information of the magnetic bead, and the controller is used to adjust the working state of the driving motor, and the controller, the encoder and the driving motor are electrically connected.

[0010] By adopting the above technical solution, the driving motor drives the main transmission assembly, the secondary transmission gear and the power output assembly, and the power output assembly is provided with suitable speed and torque through the step-by-step speed reduction of the main transmission assembly and the secondary transmission gear, thereby providing power for the opening and closing of the valve; at the same time, the synchronous gear is engaged with the secondary transmission gear, the magnetic bead is coaxially fixed with the synchronous gear, and the secondary transmission gear cooperates with the power output assembly to realize power output, and the synchronous gear and the power output assembly rotate at the same speed, thereby realizing the rotation of the magnetic bead and the power output assembly at the same speed, and the encoder detects the rotation information of the magnetic bead to monitor the movement state of the valve body in real time, and at the same time, the encoder sends the detection information to the controller, and the controller controls the rotation direction and rotation angle of the driving motor, thereby improving the accuracy of the valve body flow control.

[0011] Preferably, the shell includes a mounting seat and a covering seat, the covering seat is detachably connected to the mounting seat, an isolation cover is provided on the covering seat, the isolation cover is provided above the magnetic bead, and the isolation cover is fixedly connected to the covering seat.

[0012] By adopting the above technical solution, the mounting seat and the cover seat can be detachably connected, which is convenient for installing components such as the main transmission assembly and the secondary transmission gear, and also convenient for maintaining the internal structure of the mounting seat and the cover seat; the isolation cover is arranged above the magnetic beads, which reduces the influence of other substances such as metal powder and liquid on the normal operation of the magnetic beads.

[0013] Preferably, a U-shaped groove is provided on the mounting seat, and the output shaft of the driving motor movably passes through the U-shaped groove and extends into the interior of the mounting seat.

[0014] By adopting the above technical solution, the drive motor is installed on the mounting seat along the U-shaped groove. The U-shaped groove plays a limiting role, which makes it easy to install the drive motor through the U-shaped groove. To a certain extent, the shaking of the drive motor during operation is reduced, thereby improving the stability of the drive motor operation.

[0015] Preferably, an isolation sleeve is provided on the driving motor, and the isolation sleeve is detachably provided on the driving motor.

[0016] By adopting the above technical solution, the isolation cover is arranged on the drive motor to provide an additional protection layer for the drive motor, reducing the entry of particles, liquids and other substances into the drive motor and affecting the normal operation of the drive motor, and also enabling the drive motor to operate normally in different working environments; on the other hand, the isolation cover sets the power cord cover of the drive motor inside the isolation cover, reducing the risk of operators or other conductive objects accidentally touching the power interface, thereby improving the overall safety performance.

[0017] Preferably, a groove is provided on the mounting seat, and a flange is provided on the covering seat, and the flange abuts against the groove.

[0018] By adopting the above technical solution, the cooperation of the flange and the groove increases the stability of the connection between the mounting seat and the cover seat, while also improving the sealing of the connection between the mounting seat and the cover seat, reducing the occurrence of substances such as particles and liquids entering the cover seat and the mounting seat, thereby reducing the influence of substances such as particles and liquids on the normal operation of components such as magnetic beads and main transmission components.

[0019] Preferably, the power output assembly includes an output gear and a drive shaft, the output gear is coaxially fixed to the drive shaft, and the output gear is meshed with the secondary transmission gear.

[0020] By adopting the above technical solution, the secondary transmission gear is respectively meshed with the output gear and the synchronous gear, so that the output gear and the synchronous gear rotate at the same speed. Since the drive shaft is coaxially fixed with the output gear, and the magnetic bead is coaxially fixed with the synchronous gear, the magnetic bead and the drive shaft rotate at the same speed, and the encoder can detect the rotation direction and rotation angle of the drive shaft in real time.

[0021] Preferably, the driving shaft movably passes through the mounting seat and extends to the outside of the mounting seat, and the driving shaft is detachably arranged on the mounting seat.

[0022] By adopting the above technical solution, the drive shaft is rotatably supported on the mounting seat, which improves the stability of the drive shaft during rotation and reduces the deflection of the drive shaft during rotation; at the same time, the drive shaft can be disassembled along the mounting seat, which is convenient for maintenance of the drive shaft by disassembling the mounting seat and the covering seat.

[0023] Preferably, a clamping groove is provided on the driving shaft, and the clamping groove is used for externally connecting the valve shaft.

[0024] By adopting the above technical solution and connecting the valve shaft to the outside through the clamping groove, the problem of the deviation of the rotation angle of the valve shaft and the drive shaft due to the gap between the valve shaft and the drive shaft is solved to a certain extent, and the stability of the drive shaft controlling the rotation of the valve shaft is improved.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The magnetic bead rotates at the same speed as the power output component. The encoder detects the rotation information of the magnetic bead, which plays the role of real-time monitoring of the movement state of the valve body. At the same time, the encoder sends the detection information to the controller, and the controller controls the rotation direction and rotation angle of the drive motor, thereby improving the accuracy of the valve body flow control;

[0027] 2. The cooperation between the flange and the groove increases the stability of the connection between the mounting seat and the cover seat, and also improves the sealing of the connection between the mounting seat and the cover seat, reducing the occurrence of particles and liquids entering the cover seat and the mounting seat, thereby reducing the influence of particles and liquids on the normal operation of components such as magnetic beads and main transmission components;

[0028] 3. By connecting the valve shaft to the outside through the clamping groove, the problem of the deviation of the rotation angle of the valve shaft and the drive shaft due to the gap between the valve shaft and the drive shaft is solved to a certain extent, and the stability of the drive shaft controlling the rotation of the valve shaft is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of a driving mechanism for opening and closing a valve body in an embodiment of the present application.

[0030] Figure 2 It is an exploded schematic diagram of the overall structure of a driving mechanism for opening and closing a valve body in an embodiment of the present application along the direction of the axis shown.

[0031] Figure 3 yes Figure 2 Enlarged schematic diagram of part A.

[0032] Figure 4 It is a schematic diagram of the structure of the cover seat in the embodiment of the present application.

[0033] Figure 5 It is a system principle block diagram among the control terminal, controller, encoder, magnetic beads and drive motor in the embodiment of the present application.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. driving motor; 11. isolating sleeve; 111. wire accommodating groove; 2. housing; 21. mounting seat; 211. groove; 212. U-shaped groove; 22. cover seat; 221. flange; 222. isolating cover; 23. load-bearing shaft; 3. main transmission assembly; 31. driving gear; 32. primary transmission gear; 4. secondary transmission gear; 5. power output assembly; 51. output gear; 52. driving shaft; 521. snap-in groove; 6. auxiliary detection assembly; 61. synchronous gear; 62. magnetic bead; 7. control assembly; 71. encoder; 72. controller. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The embodiment of the present application discloses a driving mechanism for opening and closing a valve body. Figure 1 and Figure 2 A driving mechanism for opening and closing a valve body includes a housing 2 and a driving motor 1, a main transmission assembly 3, a secondary transmission gear 4 and a power output assembly 5 rotatably carried on the housing 2. The driving motor 1 drives the main transmission assembly 3, the secondary transmission gear 4 and the power output assembly 5 to rotate. The driving mechanism also includes an auxiliary detection assembly 6 and a control assembly 7. The auxiliary detection assembly 6 and the control assembly 7 are respectively arranged on the housing 2.

[0037] Reference Figure 2 and Figure 4 The shell 2 includes a mounting seat 21 and a cover seat 22, the cover seat 22 is detachably connected to the mounting seat 21, a groove 211 is provided on the mounting seat 21, a flange 221 is provided on the cover seat 22, the flange 221 abuts against the groove 211, a U-shaped groove 212 is provided on the mounting seat 21, the output shaft of the drive motor 1 movably passes through the U-shaped groove 212 and extends to the inside of the mounting seat 21, and an isolation sleeve 11 is provided on the drive motor 1, and the isolation sleeve 11 is detachably arranged on the drive motor 1.

[0038] Specifically, the outer contours of the mounting seat 21 and the cover seat 22 are both set in the shape of a rectangular parallelepiped, and the mounting seat 21 and the cover seat 22 are respectively provided with hollow areas (not shown in the figure) on the upper surface along the thickness direction for the installation of the main transmission component 3, the secondary transmission component and the power output component 5, and the corners of the mounting seat 21 and the cover seat 22 are respectively chamfered, and the mounting seat 21 and the cover seat 22 are fixedly connected by bolts, which is convenient for installing components such as the main transmission component 3 and the secondary transmission gear 4, and also convenient for maintaining the internal structure of the mounting seat 21 and the cover seat 22.

[0039] At the same time, the flange 221 is annularly arranged on the cover seat 22, and the flange 221 is formed by the upward protrusion of the upper surface of the cover seat 22; the groove 211 is annularly arranged on the mounting seat 21, and the groove 211 is formed by the downward depression of the upper surface of the mounting seat 21 along its thickness direction. When the cover seat 22 is covered on the mounting seat 21, the flange 221 abuts against the groove 211, which increases the stability of the connection between the mounting seat 21 and the cover seat 22, and also improves the sealing of the connection between the mounting seat 21 and the cover seat 22, reducing the occurrence of particles, liquids and other substances entering the cover seat 22 and the mounting seat 21, thereby reducing the influence of particles, liquids and other substances on the normal operation of components such as the magnetic beads 62 and the main transmission assembly 3.

[0040] On the other hand, the U-shaped groove 212 is formed downwardly concave along the lower surface of the mounting seat 21, and the width of the U-shaped groove 212 is greater than the diameter of the drive motor 1. A through hole (not shown in the figure) is opened on the U-shaped groove 212 for the output shaft of the drive motor 1 to pass through. The drive motor 1 is installed in the U-shaped groove 212 along the vertical direction, and the output shaft of the drive motor 1 is movable through the through hole and extends to the inside of the mounting seat 21. The drive motor 1 is installed in the U-shaped groove 212 from the inside of the mounting seat 21 to the outside of the mounting seat 21 using bolts. The U-shaped groove 212 plays a limiting role, which makes it easy to install the drive motor 1 through the U-shaped groove 212, thereby reducing the shaking of the drive motor 1 during operation to a certain extent, thereby improving the stability of the operation of the drive motor 1.

[0041] Correspondingly, the outer contour of the isolation sleeve 11 is set in a cylindrical shape, and the isolation sleeve 11 is recessed inward along its geometric center to form a cavity for the drive motor 1 to be mounted (not shown in the figure), and the diameter of the cavity is larger than the diameter of the drive motor 1. At the same time, the isolation sleeve 11 is provided with a wire groove 111 protruding outward from the inner wall along the vertical direction. The wire groove 111 and the isolation sleeve 11 are integrally formed vertically, and the wire groove 111 is used for the passage of the drive power supply. The isolation sleeve 11 is covered on the drive motor 1 to provide an additional protective layer for the drive motor 1, reducing the intrusion of particles and liquids into the drive motor 1 and affecting the normal operation of the drive motor 1, and also enabling the drive motor 1 to operate normally under different working environments; on the other hand, the isolation sleeve 11 sets the power cord cover of the drive motor 1 inside the isolation sleeve 11, reducing the risk of operators or other conductive objects accidentally touching the power interface, thereby improving the overall safety performance.

[0042] Reference Figure 3The main transmission assembly 3 includes a driving gear 31 and a plurality of primary transmission gears 32. The plurality of primary transmission gears 32 are rotatably carried on the mounting seat 21. The plurality of primary transmission gears 32 are meshed with each other. The driving gear 31 is coaxially connected to the output shaft of the driving motor 1. The driving gear 31 is meshed with one of the primary transmission gears 32, and the primary transmission gear 32 is meshed with the secondary transmission gear 4. The output shaft of the driving motor 1 drives the driving gear 31 to rotate, and the driving gear 31 drives the plurality of primary transmission gears 32 and the secondary transmission gear 4 to rotate.

[0043] Specifically, in the present embodiment, four groups of primary transmission gears 32 are provided. The four groups of primary transmission gears 32 are all composed of conventional double gears and are conventional power transmission components. Their specific composition and working principle will not be described in detail herein.

[0044] At the same time, a bearing shaft 23 is arranged between the mounting seat 21 and the covering seat 22. The bearing shaft 23 is rotatably carried between the mounting seat 21 and the covering seat 22. The four groups of primary transmission gears 32, the secondary transmission gears 4 and the auxiliary detection assembly 6 are coaxially connected to the bearing shaft 23 respectively. It should be noted that the bearing shaft 23 is a conventional rotating body supporting component. In this embodiment, the bearing shaft 23 is used to support the four groups of primary transmission gears 32, the secondary transmission gears 4 and the auxiliary detection assembly 6. The specific diameter and length are set according to actual needs and are not distinguished in this embodiment.

[0045] Therefore, the four groups of primary transmission gears 32 are installed in an array between the cover seat 22 and the mounting seat 21, and the four groups of primary transmission gears 32 are meshed with each other. At the same time, the driving gear 31 is meshed with the primary transmission gear 32 located at the front end of the four groups of primary transmission gears 32. The output shaft of the driving motor 1 drives the driving gear 31, and the driving gear 31 drives the four groups of primary transmission gears 32 to rotate. Through the step-by-step speed reduction and torque increase of the four groups of primary transmission gears 32, a suitable speed and torque are provided for the secondary transmission gear 4.

[0046] It should be noted that in this embodiment, four sets of primary transmission gears 32 are used to output the secondary transmission gear 4 to meet the required speed and torque requirements. In other embodiments, the number of primary transmission gears 32 can be increased or reduced according to actual speed and torque requirements.

[0047] Reference Figure 3The power output assembly 5 includes an output gear 51 and a drive shaft 52. The output gear 51 is coaxially fixed with the drive shaft 52. The output gear 51 is meshed with the secondary transmission gear 4. The auxiliary detection assembly 6 includes a synchronous gear 61 and a magnetic bead 62. The synchronous gear 61 is rotatably carried on the housing 2. The synchronous gear 61 is meshed with the secondary transmission gear 4. The synchronous gear 61 rotates synchronously with the secondary transmission gear 4. The magnetic bead 62 is coaxially fixed with the synchronous gear 61. A clamping groove 521 is provided on the drive shaft 52. The clamping groove 521 is used for externally connecting the valve shaft.

[0048] Specifically, the mounting seat 21 is provided with a through hole (not shown in the figure) along its thickness direction for the driving shaft 52 to pass through, and the driving shaft 52 is rotatably supported in the through hole. At the same time, the clamping groove 521 is formed by the front end of the driving shaft 52 being recessed inward along its length direction. The cross-sectional shape of the clamping groove 521 is set in a rectangular shape, and the valve shaft is clamped with the clamping groove 521. The valve shaft is externally connected to the clamping groove 521, which solves the problem of deviation in the rotation angle of the valve shaft and the driving shaft 52 due to the gap between the valve shaft and the driving shaft 52 to a certain extent, thereby improving the stability of the driving shaft 52 in controlling the rotation of the valve shaft.

[0049] On the other hand, an isolation cover 222 is provided on the upper surface of the cover seat 22. The external contour of the isolation cover 222 is cylindrical. The isolation cover 222 is formed by the lower surface of the cover seat 22 being recessed inward along its thickness direction. The isolation cover 222 and the cover seat 22 are integrally formed. The spatial position of the isolation cover 222 is located above the magnetic beads 62, thereby reducing the influence of other substances such as metal powder and liquid on the normal operation of the magnetic beads 62.

[0050] Therefore, the secondary transmission gear 4 is respectively meshed with the synchronous gear 61 and the output gear 51, so that the synchronous gear 61 and the output gear 51 rotate in the same direction and at the same speed. Since the drive shaft 52 is coaxially fixed with the output gear 51, and the synchronous gear 61 is coaxially fixed with the magnetic bead 62, the magnetic bead 62 rotates in the same direction and at the same speed as the drive shaft 52.

[0051] Reference Figure 2 and Figure 3 The control component 7 also includes a controller 72 and an encoder 71, which are respectively arranged on the housing 2, the encoder 71 is used to detect the rotation information of the magnetic bead 62, and the controller 72 is used to adjust the working state of the drive motor 1, and the controller 72 is electrically connected to the drive motor 1.

[0052] Specifically, the encoder 71 is installed on the upper surface of the isolation cover 222 , and the controller 72 is installed on the upper surface of the cover seat 22 located on one side of the encoder 71 .

[0053] Therefore, refer to Figure 5When the driving gear 31 and the output gear 51 rotate synchronously with the secondary transmission gear 4, the magnetic bead 62 rotates synchronously with the driving shaft 52, and the encoder 71 detects the working state of the magnetic bead 62. When the magnetic bead 62 rotates, the encoder 71 detects the change of the magnetic field of the magnetic bead 62, and processes the rotation information of the magnetic bead 62 and sends it to the controller 72. The controller 72 adjusts the rotation angle and rotation direction of the drive motor 1 through the built-in program.

[0054] It should be noted that the controller 72 used in this embodiment is a conventional electrical control component and has a wireless local area network connection function, and its specific composition and working principle will not be described in detail here.

[0055] The implementation principle of a driving mechanism for opening and closing a valve body in an embodiment of the present application is as follows: when it is necessary to control the flow of the valve body or control the opening and closing of the valve, the operator sets the opening and closing angle of the valve or the working state of the valve through the control terminal. After the controller 72 receives the instruction sent by the control terminal, the encoder 71 detects the rotation information of the magnetic bead 62 and sends the detection information to the controller 72. The controller 72 processes the detection information through a built-in program to obtain the opening and closing angle information of the valve, and compares it with the instruction sent by the control terminal. After obtaining the deviation value, the controller 72 adjusts the driving motor 1 through the built-in program. The output shaft of the driving motor 1 drives the driving gear 31 to rotate according to the rotation direction or rotation angle. At the same time, the driving gear 31 drives the four sets of primary transmission gears 32 to rotate, providing a suitable rotation angle and torque for the secondary transmission gear 4. The secondary transmission gear 4 drives the output gear 51 to rotate, thereby rotating the valve shaft connected to the drive shaft 52 clamping groove 521. At the same time, the encoder 71 continuously detects the rotation information of the magnetic bead 62 and sends it to the controller 72. When the rotation of the magnetic bead 62 is consistent with the set value, the controller 72 controls the driving motor 1 to stop rotating, thereby improving the accuracy of the valve body flow control.

[0056] 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 opening and closing a valve body, comprising a housing (2) and a driving motor (1) rotatably supported on the housing (2), a main transmission assembly (3), a secondary transmission gear (4) and a power output assembly (5), wherein the driving motor (1) drives the main transmission assembly (3), the secondary transmission gear (4) and the power output assembly (5) to rotate, and is characterized in that: The invention also comprises an auxiliary detection component (6) and a control component (7). The auxiliary detection component (6) comprises a synchronous gear (61) and a magnetic bead (62). The synchronous gear (61) is rotatably carried on the housing (2). The synchronous gear (61) is meshed with the secondary transmission gear (4). The synchronous gear (61) rotates synchronously with the secondary transmission gear (4). The magnetic bead (62) is coaxially fixed with the synchronous gear (61). The control component (7) comprises an encoder (71) and a controller (72). The encoder (71) and the controller (72) are arranged on the housing (2). The encoder (71) is used to detect the rotation information of the magnetic bead (62). The controller (72) is used to adjust the working state of the drive motor (1). The controller (72), the encoder (71) and the drive motor (1) are electrically connected.

2. A driving mechanism for opening and closing a valve body according to claim 1, characterized in that: The housing (2) comprises a mounting seat (21) and a cover seat (22); the cover seat (22) is detachably connected to the mounting seat (21); an isolation cover (222) is provided on the cover seat (22); the isolation cover (222) is provided above the magnetic bead (62); and the isolation cover (222) is fixedly connected to the cover seat (22).

3. A driving mechanism for opening and closing a valve body according to claim 2, characterized in that: A U-shaped groove (212) is provided on the mounting seat (21), and the output shaft of the drive motor (1) movably passes through the U-shaped groove (212) and extends into the interior of the mounting seat (21).

4. A driving mechanism for opening and closing a valve body according to claim 3, characterized in that: The drive motor (1) is provided with an isolation sleeve (11), and the isolation sleeve (11) is detachably arranged on the drive motor (1).

5. A driving mechanism for opening and closing a valve body according to claim 2, characterized in that: The mounting seat (21) is provided with a groove (211), and the covering seat (22) is provided with a flange (221), and the flange (221) abuts against the groove (211).

6. A driving mechanism for opening and closing a valve body according to claim 5, characterized in that: The power output assembly (5) comprises an output gear (51) and a drive shaft (52); the output gear (51) is coaxially fixed with the drive shaft (52); and the output gear (51) is meshed with the secondary transmission gear (4).

7. A driving mechanism for opening and closing a valve body according to claim 6, characterized in that: The driving shaft (52) movably passes through the mounting seat (21) and extends to the outside of the mounting seat (21); the driving shaft (52) is detachably arranged on the mounting seat (21).

8. A driving mechanism for opening and closing a valve body according to claim 7, characterized in that: The drive shaft (52) is provided with a clamping groove (521), and the clamping groove (521) is used for externally connecting to a valve rotating shaft.

Images