Electric actuator for fluid control
Through the direct connection between the transmission gear and the drive mechanism and the sensor sensing system, the problems of poor adjustment accuracy and high cost of existing electric actuators are solved, and precise flow control and cost reduction are achieved.
Patent Information
- Application Number
- CN202422959164.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing electric actuators have problems with poor adjustment accuracy and high cost when controlling fluid flow, especially due to deviations in the connection between the motor and the transmission mechanism of the valve.
The transmission gear is directly connected to the drive mechanism, and the positions of the strip groove and the signal member are sensed by the first and second sensors. The rotation angle of the motor is precisely controlled in combination with the control module, which reduces the dependence on expensive motors and improves the accuracy by using light emitting devices and sensors.
This enables more precise fluid flow control, reduces costs and simplifies maintenance.
Smart Images
Figure CN223411597U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric actuators, in particular to an electric actuator for fluid control. Background Art
[0002] An electric actuator is a drive device that provides linear or rotational motion. It utilizes electrical control and operates in response to a specific control signal. Electric actuators typically control fluid flow by controlling valve opening. Existing electric actuators typically control fluid flow by controlling the rotation of a motor to adjust the valve's opening. However, because the motor is typically connected to the valve's drive mechanism via a transmission mechanism, deviations can occur during the transmission process, resulting in poor adjustment accuracy. Furthermore, these motors are expensive and difficult to maintain. Utility Model Content
[0003] In order to solve the problems of the prior art, the utility model provides an electric actuator for fluid control with more precise control and lower use cost.
[0004] The specific technical solution is as follows: An electric actuator for fluid control, comprising a motor, a transmission mechanism, a drive mechanism and a control module, the control module being connected to the motor, and the motor being connected to the drive mechanism through the transmission mechanism, the transmission mechanism comprising a transmission gear, the transmission gear being connected to the drive mechanism, a first side surface of the transmission gear being provided with a strip groove, a plurality of strip grooves being radially arranged along the radial direction of the transmission gear, and a plurality of strip grooves forming a fan-shaped area, a first sensor being provided above the first side surface, the first sensor being arranged corresponding to the strip groove, a signal component being provided on the second side surface of the transmission gear, a second sensor being provided below the transmission gear, the second sensor being arranged corresponding to the signal component, the strip groove and the signal component rotating with the transmission gear, the first sensor and the second sensor being electrically connected to the control module respectively.
[0005] In some embodiments, the transmission mechanism includes a driving gear and an intermediate gear meshing with each other, the driving gear and the transmission gear are respectively meshed with the intermediate gear, and the driving gear is connected to the motor.
[0006] In some embodiments, a light emitting device is provided below the transmission gear, and the light emitting device is provided corresponding to the first sensor.
[0007] In some embodiments, the control module is disposed in the housing, and a battery compartment is provided above the control module.
[0008] In some embodiments, a sleeve is provided on the transmission gear, and the driving mechanism includes a connecting rod, which is inserted into the sleeve.
[0009] In some embodiments, the driving mechanism includes a cylindrical portion having a side opening and a bottom opening communicating with the side opening, and an upper end of the cylindrical portion is connected to a connecting rod.
[0010] In some embodiments, the cylindrical portion is disposed in a fluid channel, and two ends of the fluid channel respectively have an inlet portion and an outlet portion.
[0011] The technical effect of the utility model: The electric actuator for fluid control of the utility model can easily control the rotation angle range of the driving mechanism without the need for expensive motors, thereby reducing costs and facilitating maintenance; in addition, the transmission gear is directly connected to the driving mechanism, which can make the control more precise. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of an electric actuator for fluid control according to an embodiment of the present utility model.
[0013] Figure 2 It is a schematic diagram of the transmission mechanism of an embodiment of the present utility model.
[0014] Figure 3 Schematic diagram of the driving mechanism of the embodiment of the present utility model.
[0015] Figure 4 It is a cross-sectional view of the driving mechanism of an embodiment of the present utility model.
[0016] Figure 5 It is a three-dimensional diagram of an electric actuator for fluid control according to an embodiment of the present utility model. DETAILED DESCRIPTION
[0017] The essential features and advantages of the present invention are further described below with reference to examples, but the present invention is not limited to the examples listed.
[0018] like Figures 1 to 5As shown, an electric actuator for fluid control in this embodiment includes a motor 1, a transmission mechanism 2, a drive mechanism 3, and a control module 4. The control module 4 is connected to the motor 1, which is connected to the drive mechanism 3 via the transmission mechanism 2. The motor 1 drives the drive mechanism 3 to rotate through the transmission mechanism 2. The control module 4 controls the motor 1 and is a circuit board. The transmission mechanism 2 includes a transmission gear 21, which is connected to the drive mechanism 3. The first side 211 of the transmission gear 21 is provided with a strip groove 5. Several strip grooves 5 are arranged radially along the radial direction of the transmission gear 21, and the strip grooves 5 form a fan-shaped area. A first sensor 6 is provided above the first side 211. The first sensor 6 is arranged corresponding to the strip groove 5, so that the first sensor 6 can sense light passing through the light-transmitting strip groove 5. A signal element 7 is provided on the second side 212 of the transmission gear 21. A second sensor 8 is provided below the transmission gear 21. The second sensor 8 is arranged corresponding to the signal element 7. The signal element 7 rotates with the transmission gear 21. When the signal element 7 rotates to the position corresponding to the second sensor 8, the second sensor 8 receives a signal. The strip groove 5 and signal element 7 rotate with the transmission gear. The first sensor 6 and the second sensor 8 are electrically connected to the control module 4, respectively. Thus, after receiving signals from the first and second sensors, the control module 4 outputs a control signal to the motor. In the above technical solution, the control module 4 pre-sets the rotation angle of the drive mechanism 3. After the motor 1 is started, light passes through the strip groove 5 and past the first sensor 6, causing the first sensor 6 to sense light, thereby outputting a signal to the control module 4. The rotation angle is calculated based on the number of strip grooves 5 that pass through. When the rotation angle is reached, the control module 4 controls the motor to stop, thereby controlling the rotation angle of the drive mechanism 3. The first sensor 6 can be a photoelectric sensor. By providing the signal element 7, the control module 4 controls the motor to stop when the second sensor 8 senses the signal element 7. When the drive mechanism 3 is connected to the valve, the valve closes when the signal element 7 corresponds to the second sensor 8. In one embodiment, the second sensor 8 can be a proximity sensor, and the signal element 7 can be made of metal. Through the above technical solution, the rotation angle range of the drive mechanism can be easily controlled without the need for expensive motors, which reduces costs and facilitates maintenance; in addition, the transmission gear is directly connected to the drive mechanism, which can make the control more precise.
[0019] In this embodiment, the transmission mechanism 2 includes a drive gear 22 and several intermeshing intermediate gears 23. The drive gear 22 and the transmission gear 21 respectively mesh with the intermediate gears 23. The drive gear 22 is connected to the motor 1. The drive gear 22 is mounted on the motor shaft of the motor 1. The drive gear 22 drives the transmission gear 21 through two intermediate gears 23. This transmission mechanism reduces the rotational speed. A light emitting device 9 is provided below the transmission gear 21. The light emitting device 9 is arranged corresponding to the first sensor 6. The light emitting device 9 emits light so that when the strip groove passes through the light emitting device 9, the light is sensed by the first sensor 6. The first sensor 6 can be an infrared sensor.
[0020] In this embodiment, the control module 4 is disposed in the housing 10. A battery compartment 101 is provided above the control module 4. The battery compartment is used to accommodate batteries to power the control module 4. A sleeve 24 is provided on the transmission gear 21. The drive mechanism 3 includes a connecting rod 31. The connecting rod 31 is inserted into the sleeve 24, so that the sleeve 24 rotates synchronously with the transmission gear, driving the connecting rod 31 to rotate. The drive mechanism 3 includes a cylindrical portion 32. The cylindrical portion 32 has a side opening 321 and a bottom opening 322 connected to the side opening 321. The upper end of the cylindrical portion 32 is connected to the connecting rod 31. Through the above technical solution, the connecting rod 31 drives the cylindrical portion 32 to rotate, thereby adjusting the position of the side opening 321. The cylindrical portion 32 is disposed within the fluid channel 20, which has an inlet 201 and an outlet 202 at either end. As fluid passes through the fluid channel 20, the position of the side opening 321 is controlled by the rotation of the drive mechanism 3. When the side opening 321 is connected to the inlet 201, the fluid can pass through the side opening 321 and into the outlet 202 via the bottom opening 322. The side opening 321 is curved, and the amount of fluid flowing through it can be controlled by rotating it at different angles. When the side opening 321 is misaligned with the inlet 201, the fluid cannot pass through the cylindrical portion 32, and the flow is blocked.
[0021] The electric actuator for fluid control of this embodiment can easily control the rotation angle range of the drive mechanism without using an expensive motor, thereby reducing costs and facilitating maintenance; in addition, the transmission gear is directly connected to the drive mechanism, which can make the control more precise.
[0022] It should be noted that the above preferred embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to fall within the scope of protection of the present invention.
Claims
1. An electric actuator for fluid control, comprising a motor, a transmission mechanism, a drive mechanism and a control module, wherein the control module is connected to the motor, and the motor is connected to the drive mechanism via the transmission mechanism, characterized in that: The transmission mechanism includes a transmission gear, which is connected to the driving mechanism. A strip groove is provided on the first side of the transmission gear, and a plurality of strip grooves are radially arranged along the radial direction of the transmission gear. The plurality of strip grooves form a fan-shaped area. A first sensor is provided above the first side, and the first sensor is arranged corresponding to the strip groove. A signal component is provided on the second side of the transmission gear, and a second sensor is provided below the transmission gear, and the second sensor is arranged corresponding to the signal component. The strip groove and the signal component rotate with the transmission gear, and the first sensor and the second sensor are electrically connected to the control module respectively.
2. The electric actuator for fluid control according to claim 1, characterized in that: The transmission mechanism includes a driving gear and a plurality of mutually meshing intermediate gears. The driving gear and the transmission gear are respectively meshed with the intermediate gears, and the driving gear is connected to the motor.
3. The electric actuator for fluid control according to claim 2, characterized in that: A light emitting device is provided below the transmission gear, and the light emitting device is provided corresponding to the first sensor.
4. The electric actuator for fluid control according to claim 3, characterized in that: The control module is arranged in the shell, and a battery compartment is provided above the control module.
5. The electric actuator for fluid control according to claim 1, characterized in that: The transmission gear is provided with a sleeve, and the driving mechanism includes a connecting rod, which is inserted into the sleeve.
6. The electric actuator for fluid control according to claim 5, characterized in that: The driving mechanism includes a columnar portion, the columnar portion is provided with a side opening and a bottom opening communicated with the side opening, and the upper end of the columnar portion is connected to the connecting rod.
7. The electric actuator for fluid control according to claim 6, characterized in that: The columnar portion is arranged in a fluid channel, and both ends of the fluid channel are respectively provided with an inlet portion and an outlet portion.