A controller and electric actuator

Abstract

The utility model relates to a kind of controllers, comprising: box, box cover and control circuit board and valve position indicating circuit board installed in box, the control circuit board and valve position indicating circuit board are electrically connected, the box cover is cooperated with box, the box cover is used to seal box, wiring hole is opened in the side of the box, at least one through-hole is opened in the top of the box, light shield is installed in the through-hole, the valve position indicating circuit board is installed in the top in box, indicating lamp for indicating the valve switch state is arranged on the valve position indicating circuit board, the indicating lamp corresponds with the position of through-hole.The utility model also discloses a kind of electric controller.The utility model can be directly observed the opening and closing state of valve by the through-hole on box and indicating lamp on indicating circuit board.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator technology, and in particular to a controller and an electric actuator. Background Technology

[0002] Electric actuators are core components of automatic control systems. Their main function is to receive controller signals (such as current or voltage) and drive valves or regulating mechanisms to change the flow of media, thereby achieving precise process control. In marine systems, 90° angle stroke valves such as butterfly valves and ball valves are widely used, therefore, their matching electric actuators must have reliable and accurate valve opening and closing capabilities. However, existing electric actuators still have the following problems: 1. Lack of intuitive valve opening / closing status; 2. Lack of valve opening angle indicator; 3. Control systems typically employ complex and costly precision electric mechanisms, requiring additional feedback devices; 4. Simple operation method; 5. Large size. Summary of the Invention

[0003] The purpose of this invention is to provide a controller and an electric actuator to solve at least one of the above-mentioned problems.

[0004] To achieve the above objectives, this utility model discloses a controller, comprising: a housing, a cover, and a control circuit board and a valve position indicator circuit board installed inside the housing. The control circuit board and the valve position indicator circuit board are electrically connected. The cover cooperates with the housing and is used to seal the housing. A wiring hole is provided on the side of the housing. At least one through hole is provided on the top of the housing. A light-transmitting cover is installed in the through hole. The valve position indicator circuit board is installed on the top of the housing. An indicator light for indicating the valve opening / closing status is provided on the valve position indicator circuit board, and the position of the indicator light corresponds to the position of the through hole.

[0005] Preferably, the controller further includes a Bluetooth module, which is installed inside the housing.

[0006] Preferably, the controller further includes a circuit board potting box, which is installed inside the box. The control circuit board is installed inside the circuit board potting box, and a Bluetooth mounting bracket is provided on the top of the circuit board potting box, on which the Bluetooth module is mounted.

[0007] Preferably, the valve position indicator circuit board is a Hall valve position indicator circuit board, which includes a circular portion and two elongated portions, with the two elongated portions symmetrically arranged on the circumference of the circular portion.

[0008] Preferably, the top of the housing has a through hole and two switch control indicator holes, with the switch control indicator holes located on both sides of the through hole. The light-transmitting cover includes a first light-transmitting cover and a second light-transmitting cover. The first light-transmitting cover is installed inside the through hole, and the second light-transmitting cover is installed inside the switch control indicator holes. The first light-transmitting cover includes a top and a mounting post connected to the bottom of the top. The mounting post has a hollow structure, and its outer wall has a first annular groove. The mounting post has a mounting groove extending upwards from the bottom, passing through the first annular groove. The circular portion of the Hall valve position indicator circuit board is installed inside the mounting post, and the elongated portion passes through the mounting groove. A retaining ring for the Hall valve position indicator circuit board is installed on the first annular groove.

[0009] Preferably, the controller further includes a curved sealing ring disposed between the housing and the cover. A first waterproof connector is installed in the wiring hole.

[0010] An electric actuator includes a controller, a housing, and a motor, a reduction mechanism, and an output shaft installed sequentially from top to bottom within the housing. The controller is installed on one side of the housing. The motor is driven by the reduction mechanism, and the reduction mechanism is driven by the output shaft. The output shaft is used to drive a valve to open or close. The motor is electrically connected to a control circuit board.

[0011] Preferably, the electric actuator further includes a manual wheel and a switch indicator shaft. The motor is provided with a motor shaft, which is a hollow structure. The switch indicator shaft passes through the motor shaft. One end of the switch indicator shaft passes through the reduction mechanism and is fixedly connected to the output shaft. The other end of the switch indicator shaft is fixedly connected to the manual wheel.

[0012] Preferably, the manual wheel has a mounting hole for the switch indicator shaft to pass through, the switch indicator shaft passes through the mounting hole and is fixedly connected to the manual wheel, the top of the indicator shaft is provided with an indicator mark for indicating the valve rotation position, a protective cover is provided at one end of the outer casing near the manual wheel, the manual wheel is disposed inside the protective cover, a transparent observation window is provided on the protective cover corresponding to the position of the indicator mark, and a scale for indicating the valve opening angle is provided on the protective cover and / or the outer casing.

[0013] Preferably, the electric actuator further includes a position signal detection device, which is an encoder connected to the output shaft via a gear mechanism, and the position signal detection device is electrically connected to the control circuit board.

[0014] This utility model has the following beneficial effects: 1. The opening and closing status of the valve can be directly observed through the through hole on the box and the indicator light on the indicator circuit board.

[0015] 2. The valve's open / closed status can also be observed through the indicators on the manual wheel. Combined with the scale on the protective cover, the valve's open / closed status and opening angle can be clearly observed.

[0016] 3. The planetary reduction mechanism has a compact structure, which can reduce the size of the electric actuator.

[0017] 4. Simple to control, with multiple control methods for actuators, such as wireless Bluetooth connection control, local connection control, manual control, and magnetic Hall connection control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the controller provided in a specific embodiment of the present utility model; Figure 2 This is an exploded view of the controller provided in a specific embodiment of the present utility model; Figure 3 This is a partially enlarged schematic diagram of point A provided in a specific embodiment of this utility model; Figure 4 This is a front view schematic diagram of the controller provided in a specific embodiment of this utility model; Figure 5 This is a top view of the controller provided in a specific embodiment of the present utility model; Figure 6 This is a side view of the controller provided in a specific embodiment of the present utility model; Figure 7 This is an exploded view of the controller provided in a specific embodiment of the present utility model; Figure 8 This is a schematic diagram of the overall structure provided in a specific embodiment of the present utility model; Figure 9 This is a partially enlarged schematic diagram of point B provided in a specific embodiment of this utility model; Figure 10 This is a cross-sectional schematic diagram of the overall structure provided in a specific embodiment of the present utility model; Figure 11 This is a schematic diagram of the deceleration mechanism provided in a specific embodiment of the present utility model; Figure 12 This is a schematic diagram showing the connection between the output shaft and the position signal detection device in a specific embodiment of this utility model.

[0019] Explanation of symbols for main components: 100. Box body; 101. Curved sealing ring; 102. Square sealing ring; 103. Through hole; 110. Circuit board potting box; 111. Control circuit board; 112. Bluetooth module; 113. Bluetooth bracket; 120. Box cover; 121. First waterproof connector; 122. Second waterproof connector; 130. First light-transmitting cover; 131. Mounting groove; 132. First annular groove; 133. Sealing ring; 134. Snap ring; 135. Second annular groove; 140. Valve position indicator circuit board; 141. Circular part; 142. Long strip part; 150. Second light-transmitting cover opening control button; 20 0. Outer casing; 210. Protective cover; 211. Observation window; 212. Scale; 300. Manual wheel; 310. Switch indicator shaft; 400. Motor; 410. Motor shaft; 500. Reduction mechanism; 510. Internal gear ring; 520. First planetary support; 521. First planetary gear; 522. First sun gear; 523. Second sun gear; 530. Second planetary support; 531. Second planetary gear; 532. Third sun gear; 600. Position signal detection device; 610. Second gear; 700. Output shaft; 701. First gear; 710. Third planetary gear. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Example 1 like Figures 1-7This utility model provides a controller, including: a box body 100, a box cover 120, and a control circuit board 111 and a valve position indicator circuit board 140 installed inside the box body 100. The control circuit board 111 and the valve position indicator circuit board 140 are electrically connected. The box cover 120 cooperates with the box body 100 and is used to seal the box body 100. The box body 100 has wiring holes for wiring. The number of wiring holes can be opened according to actual needs. A first waterproof connector 121 is installed in the wiring hole. The first waterproof connector 121 allows cables to pass through, thereby preventing water from entering the box body 100. The top of the housing 100 has at least one through hole 103, and a light-transmitting cover is installed inside the through hole 103. The light-transmitting cover can be made of transparent PMMA, transparent PC, or transparent ABS material, so that the position of the indicator light can be more clearly observed. The valve position indicator circuit board 140 is installed inside the top of the housing 100. The valve position indicator circuit board 140 is equipped with an indicator light for indicating the valve's open / closed status. For example, when the indicator light is on, it means the valve is open, and when the indicator light is off, it means the valve is closed; or when the indicator light is green, it means the valve is open, and when the indicator light is red, it means the valve is closed. Of course, the color of the indicator light can be changed to other colors, which is not limited here. The position of the indicator light corresponds to the position of the through hole 103, so that the status of the indicator light can be observed through the light-transmitting cover.

[0022] In this embodiment, the top of the housing 100 has a through hole 103 and two switch control indicator holes, which are located on both sides of the through hole. The light-transmitting cover includes a first light-transmitting cover 130 and a second light-transmitting cover 150. The first light-transmitting cover 130 is installed inside the through hole 103, and the second light-transmitting cover 150 is installed inside the switch control indicator holes. One of the second light-transmitting covers 150 has text or letters indicating "on", and the other second light-transmitting cover 150 has text or letters indicating "off".

[0023] like Figure 3 The valve position indicator circuit board 140 is a Hall effect valve position indicator circuit board 140, which includes a circular portion 141 and two elongated portions 142, symmetrically arranged on the circumference of the circular portion 141. Indicator lights are provided on both the circular portion 141 and the two elongated portions 142 of the Hall effect valve position indicator circuit board 140. The positions of the indicator lights correspond to the three through holes 103 on the top of the housing 100. The valve is manually opened and closed using a magnetic pole on the outside of the two elongated portions 142. When the magnetic pole is placed on the "open" position, the valve is open; when it is placed on the "closed" position, the valve is closed. The indicator lights on the circular portion 141 indicate that the Hall effect valve position indicator circuit board 140 is functioning normally.

[0024] like Figures 2-3The first light-transmitting cover 130 includes a top and a mounting post connected to the bottom of the top. The mounting post is hollow, and a first annular groove 132 is formed on the outer wall of the mounting post. A mounting groove 131 is formed from the bottom upwards on the mounting post, and the mounting groove 131 passes through the first annular groove 132. The circular portion 141 of the Hall valve position indicator circuit board 140 is installed inside the mounting post, and the elongated portion 142 passes through the mounting groove 131. A retaining ring 134 for the Hall valve position indicator circuit board 140 is installed on the first annular groove 132. When the retaining ring 134 is engaged inside the first annular groove 132, it can prevent the Hall valve position indicator circuit board 140 from falling out of the mounting post. Meanwhile, a second annular groove 135 is also provided on the outer wall of the mounting column. The second annular groove 135 is located above the mounting groove 131. A sealing ring 133 is provided in the second annular groove 135. When the first light-transmitting cover 130 is installed in the through hole 103, the sealing ring 133 can provide a better sealing effect and prevent water from entering the box 100 from the gap between the first light-transmitting cover 130 and the through hole 103.

[0025] like Figure 2 The controller also includes a circuit board potting box 110, which is installed inside the housing 100. The control circuit board 111 is installed inside the circuit board potting box 110. The controller also includes a Bluetooth module 112, which is a circuit board integrating a Bluetooth chip. A Bluetooth mounting bracket is provided on the top of the circuit board potting box 110, and the Bluetooth module 112 is mounted on the Bluetooth bracket 113. The potting box further protects the control circuit board 111, while the Bluetooth bracket 113 provides a secure location for the Bluetooth module 112. In other embodiments, the Bluetooth module 112 can also be integrated onto the control circuit board 111. The Bluetooth module 112 enables control of the valve's opening or closing via Bluetooth connection.

[0026] The controller also includes a curved sealing ring 101, which is disposed between the box body 100 and the box cover 120. The curved sealing ring 101 has the same shape as the cross-sectional shape of the box body 100. By setting the curved sealing ring 101, the sealing effect between the box body 100 and the box cover 120 can be improved, preventing water from entering the box body 100.

[0027] like Figures 8-12This utility model also discloses an electric actuator, including a controller, a housing 200, and a motor 400, a reduction mechanism 500, and an output shaft 700, which are installed sequentially from top to bottom within the housing 200. The controller is installed on one side of the housing 200, and a square sealing ring 102 is provided at the connection between the controller and the housing 200. A wiring hole is also provided on the side of the controller facing the housing 200, and a wiring hole is also provided on the housing 200. The two wiring holes are connected by a second waterproof connector 122. The two waterproof structures, the square sealing ring 102 and the second waterproof connector 122, improve the waterproof sealing effect. The motor 400 is driven by the reduction mechanism 500, and the reduction mechanism 500 is driven by the output shaft 700. The output shaft 700 is used to drive the valve to open or close. The motor 400 is electrically connected to the control circuit board 111. In this embodiment, the reduction mechanism 500 is a three-stage planetary reduction mechanism 500, which is an NWGN type planetary reducer. The planetary reduction mechanism 500 has a compact structure, which helps to reduce the size of the actuator. Motor 400 can be a through-type hollow shaft motor.

[0028] like Figure 11 In this embodiment, the three-stage planetary reduction mechanism 500 includes an internal gear ring 510, a first sun gear 522, first planet gears 521, a first planetary carrier 520, a second sun gear 523, second planet gears 531, a second planetary carrier 530, a third sun gear 532, and a third planet gear 710. Multiple first planet gears 521 are rotatably mounted on the first planetary carrier 520, and the second sun gear 523 is fixedly mounted on the bottom of the first planetary carrier 520. Multiple second planet gears 531 are rotatably mounted on the second planetary carrier 530, and the third sun gear 532 is fixedly mounted on the bottom of the second planetary carrier 530. Multiple third planet gears 710 are rotatably mounted on the output shaft 700.

[0029] The motor 400 is provided with a motor shaft 410, which is fixedly connected to the first sun gear 522. The motor shaft 410 drives the first sun gear 522 to rotate. The first sun gear 522 meshes with a plurality of first planet gears 521, which in turn drives the plurality of first planet gears 521 to rotate. The plurality of first planet gears 521 mesh with an internal gear ring 510, and the first planet gears 521 roll along the internal gear ring 510, thereby driving the first planetary support 520 to rotate. The first planetary support 520 drives the second sun gear 523 to rotate.

[0030] The second sun gear 523 meshes with multiple second planet gears 531, driving the multiple second planet gears 531 to rotate. The multiple second planet gears 531 mesh with the internal gear ring 510, and the second planet gears 531 roll along the internal gear ring 510, thereby driving the second planetary support 530 to rotate. The second planetary support 530 drives the third sun gear 532 to rotate. The third sun gear 532 meshes with multiple third planet gears 710, driving the multiple third planet gears 710 to rotate. The multiple third planet gears 710 mesh with the internal gear ring 510, and the third planet gears 710 roll along the internal gear ring 510, thereby driving the output shaft 700 to rotate.

[0031] The number of the first planetary gear 521, the second planetary gear 531, and the third planetary gear 710 can be set to 3.

[0032] like Figure 10 The electric actuator also includes a manual wheel 300 and a switch indicator shaft 310. The motor shaft 410 is a hollow structure. The switch indicator shaft 310 passes through the motor shaft 410. One end of the switch indicator shaft 310 passes through the reduction mechanism 500 and is fixedly connected to the output shaft 700. The other end of the switch indicator shaft 310 is fixedly connected to the manual wheel 300. The manual wheel 300 has a mounting hole for the switch indicator shaft 310 to pass through. The switch indicator shaft 310 passes through the mounting hole and is fixedly connected to the manual wheel 300. The fixed connection can be achieved by threaded connection or welding. The switch indicator shaft 310 passes through the planetary carrier and is rotatably connected to the planetary carrier. The planetary carrier of the planetary reduction mechanism 500 has a through hole 103, in which a bearing is installed. The switch indicator shaft 310 passes through the inner ring of the bearing and is rotatably connected to the planetary carrier. In the event of a power outage, the rotation of the output shaft 700 can be controlled by rotating the manual wheel 300, thereby controlling the opening and closing of the valve.

[0033] A protective cover 210 is provided at one end of the outer casing 200 near the manual wheel 300. The manual wheel 300 is located inside the protective cover 210. The protective cover 210 can prevent the manual wheel 300 from causing injury to the human body or getting caught in foreign objects during rotation when there is electricity, thus preventing abnormal operation of the electric actuator.

[0034] like Figures 8-9The top of the indicator shaft 310 is provided with an indicator mark to indicate the valve rotation position. The indicator mark can be arrow-shaped and bright red. A transparent observation window 211 is provided on the protective cover 210 corresponding to the indicator mark. The observation window 211 can be made of transparent glass or acrylic. The protective cover 210 is provided with a scale 212 to indicate the valve opening angle. The indicator mark points to the corresponding scale 212, indicating that the valve is open to that angle. The scale 212 can also be in percentage form. In other embodiments, the scale 212 can also be engraved on the outer casing 200. When the protective cover 210 is disassembled, the valve opening status can be visually observed by combining the indicator mark and the scale 212 on the outer casing 200.

[0035] like Figures 11-12 The electric actuator also includes a position signal detection device 600, which is an encoder connected to the output shaft 700 via a gear mechanism. The gear mechanism includes a first gear 701 integrally formed with the output shaft 700 and a second gear 610 fixedly connected to the encoder. The first gear 701 meshes with the second gear 610, driving the second gear 610 to rotate, thus enabling the encoder to operate. The position signal detection device 600 is electrically connected to the control circuit board 111. When the output shaft 700 rotates, it drives the encoder shaft to rotate synchronously, thereby rotating the encoder and outputting corresponding electrical signals to the control circuit board 111, allowing the control circuit board 111 to adjust the operating state of the motor 400.

[0036] Example 2 The main difference between this embodiment and Embodiment 1 is that: the top of the housing 100 has only one through hole 103, and the valve position indicator circuit board 140 has only one indicator light corresponding to the position of the through hole 103. In this case, the indicator light can be configured as follows: when the indicator light is on, it indicates that the valve is open; when the indicator light is off, it indicates that the valve is closed; or when the indicator light is green, it indicates that the valve is open; when the indicator light is red, it indicates that the valve is closed. Of course, the color of the indicator light can be changed to other colors, and there are no restrictions here.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A controller, characterized in that, include: The box body (100), the box cover (120), and the control circuit board (111) and the valve position indicator circuit board (140) installed inside the box body (100) are electrically connected. The box cover (120) cooperates with the box body (100) and is used to seal the box body (100). The side of the box body (100) is provided with wiring holes. The top of the box body (100) is provided with at least one through hole (103). A light-transmitting cover is installed in the through hole (103). The valve position indicator circuit board (140) is installed on the top inside the box body (100). The valve position indicator circuit board (140) is provided with an indicator light for indicating the valve opening and closing status. The position of the indicator light corresponds to that of the through hole (103).

2. The controller according to claim 1, characterized in that: It also includes a Bluetooth module (112), which is installed inside the housing (100).

3. A controller according to claim 2, characterized in that: It also includes a circuit board potting box (110), which is installed inside the box body (100). The control circuit board (111) is installed inside the circuit board potting box (110). A Bluetooth mounting bracket is provided on the top of the circuit board potting box (110), and the Bluetooth module (112) is mounted on the Bluetooth bracket (113).

4. A controller according to claim 3, characterized in that: The valve position indicator circuit board (140) is a Hall valve position indicator circuit board (140). The Hall valve position indicator circuit board (140) includes a circular part (141) and two elongated parts (142). The two elongated parts (142) are symmetrically arranged on the circumference of the circular part (141).

5. A controller according to claim 4, characterized in that: The top of the box body (100) is provided with a through hole (103) and two switch control marking holes. The switch control marking holes are located on both sides of the through hole. The light-transmitting cover includes a first light-transmitting cover (130) and a second light-transmitting cover (150). The first light-transmitting cover (130) is installed in the through hole (103), and the second light-transmitting cover (150) is installed in the switch control marking holes. The first light-transmitting cover (130) includes a top cover and a mounting post connected to the bottom of the top cover. The mounting post is a hollow structure. A first annular groove (132) is provided on the outer wall of the mounting post. A mounting groove (131) is provided on the mounting post from bottom to top. The mounting groove (131) passes through the first annular groove (132). The circular part (141) of the Hall valve position indicator circuit board (140) is installed in the mounting post. The elongated part (142) passes through the mounting groove (131). A retaining ring (134) for the Hall valve position indicator circuit board (140) is installed on the first annular groove (132).

6. A controller according to claim 1, characterized in that: It also includes a curved sealing ring (101), which is disposed between the box body (100) and the box cover (120).

7. An electric actuator, characterized in that: The device includes a controller as described in any one of claims 1-6, a housing (200), and a motor (400), a reduction mechanism (500), and an output shaft (700) installed sequentially from top to bottom within the housing (200). The controller is installed on one side of the housing (200). The motor (400) is driven to the reduction mechanism (500). The reduction mechanism (500) is driven to the output shaft (700). The output shaft (700) is used to drive the valve to open or close. The motor (400) is electrically connected to the control circuit board (111).

8. An electric actuator according to claim 7, characterized in that: It also includes a manual wheel (300) and a switch indicator shaft (310). The motor (400) is provided with a motor shaft (410), which is a hollow structure. The switch indicator shaft (310) passes through the motor shaft (410). One end of the switch indicator shaft (310) passes through the reduction mechanism (500) and is fixedly connected to the output shaft (700). The other end of the switch indicator shaft (310) is fixedly connected to the manual wheel (300).

9. An electric actuator according to claim 8, characterized in that: The manual wheel (300) has a mounting hole through which the switch indicator shaft (310) passes. The switch indicator shaft (310) passes through the mounting hole and is fixedly connected to the manual wheel (300). The top of the indicator shaft (310) is provided with an indicator mark for indicating the valve rotation position. The outer shell (200) is provided with a protective cover (210) at one end near the manual wheel (300). The manual wheel (300) is located inside the protective cover (210). The protective cover (210) is provided with a transparent observation window (211) at the position corresponding to the indicator mark. The protective cover (210) and / or the outer shell (200) are provided with a scale (212) for indicating the valve opening angle.

10. An electric actuator according to claim 8, characterized in that: It also includes a position signal detection device (600), which is an encoder connected to the output shaft (700) via a gear mechanism, and the position signal detection device (600) is electrically connected to the control circuit board (111).

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