An actuator with automatic temperature and pressure control
The actuator, with its four-stage spur gear transmission and limit design, solves the problems of low power transmission efficiency and poor adjustment accuracy of traditional actuators under high load scenarios, achieving efficient and stable temperature and pressure control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEST-JIANGSU FLOW DEVICE TECH LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional actuators have low power transmission efficiency under high load conditions, gears are prone to wobbling, adjustment components are prone to misalignment, and adjustment accuracy is poor, making them unsuitable for scenarios with high parameter control requirements.
It adopts a four-stage spur gear transmission structure, combined with a stepper motor and limit design. Power transmission and angle adjustment are achieved through multi-stage gear meshing. The axial movement of the adjustment rod is limited by the snap ring and the limit groove, ensuring stable rotation and precise adjustment.
It improves power transmission efficiency, avoids gear wobble and adjustment misalignment, ensures adjustment accuracy and stability, and reduces the risk of failure and cost.
Smart Images
Figure CN224592788U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of actuator technology, and in particular to an actuator with automatic temperature and pressure control. Background Technology
[0002] Actuators belong to the field of valve and automation control technology. They are primarily used in scenarios that require precise control of temperature and pressure parameters, such as air valve control in HVAC systems, fluid valve regulation in industrial pipelines, and process parameter stabilization in small chemical equipment. They are key execution units that connect sensor signals with controlled components such as air valves and valves. To achieve automatic control of temperature and pressure, traditional solutions typically use a combination of actuators, PLCs, sensors, and signal transmitters.
[0003] Traditional actuators in existing technologies mostly employ single-stage transmission or simple reduction structures, resulting in generally low power transmission efficiency and difficulty in meeting the demands of high-load scenarios. Furthermore, their gears often lack stable support, making them prone to wobbling during operation and potentially leading to transmission failure. In addition, traditional actuators lack precise limit designs, causing adjustment components to easily shift during operation, significantly reducing adjustment accuracy and making them unsuitable for scenarios with high parameter control requirements. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an actuator with automatic temperature and pressure control.
[0005] This utility model is achieved using the following technical solution: an actuator with automatic temperature and pressure control, comprising an actuator lower housing, a base plate fixedly connected to the bottom of the actuator lower housing, a stepper motor fixedly connected to the surface of the actuator lower housing, a drive gear fixedly connected to the output end of the stepper motor, a spur gear one meshing with the outer wall of the drive gear, a spur gear two meshing with the outer wall of the spur gear one, a spur gear three meshing with the outer wall of the spur gear two, a spur gear four meshing with the outer wall of the spur gear three, a half gear meshing with the outer wall of the spur gear four, a bottom limiting seat fixedly connected to the top of the base plate, an adjusting rod fixedly connected to the outer wall of the half gear, the outer wall of the adjusting rod rotatably connected to the inner wall of the bottom limiting seat, and a top limiting seat rotatably connected to the outer wall of the adjusting rod.
[0006] As a further improvement to the above solution, the top of the spur gear is rotatably connected to the inner wall of the lower housing of the actuator, the bottom of the spur gear is rotatably connected to the inner wall of the base plate, and the top limiting seat is fixedly connected to the surface of the lower housing of the actuator.
[0007] Through the above technical solution, the base plate fixed at the bottom of the actuator lower shell provides stable support for the overall structure. The stepper motor fixed on the surface of the actuator lower shell serves as the core power source. When the external temperature and pressure signals trigger the control command, the stepper motor starts, and the drive gear fixed at its output end rotates synchronously with the motor output shaft, transmitting power to the subsequent gear transmission components to provide initial power for the actuator's adjustment action. The outer wall of the drive gear meshes with the spur gear, driving the spur gear to rotate.
[0008] As a further improvement to the above solution, a retaining ring groove is provided on the outer wall of the adjusting rod, a retaining ring is provided in contact with the inner wall of the retaining ring groove, and a limit groove is provided on the top of the adjusting rod.
[0009] As a further improvement to the above solution, the outer wall of the adjusting rod is slidably connected to an actuator limiting seat, the bottom of the snap ring is in contact with the surface of the actuator limiting seat, and the outer wall of the actuator limiting seat is slidably connected to the inner wall of the limiting groove.
[0010] As a further improvement to the above solution, an actuator clamping rod is slidably connected to the inner wall of the actuator limiting seat, and a limiting nut is threadedly connected to the outer wall of the actuator clamping rod, with two limiting nuts provided.
[0011] As a further improvement to the above solution, a circuit board is fixedly connected to the inner wall of the lower housing of the actuator, and a monitoring gear is rotatably connected to the inner wall of the lower housing of the actuator.
[0012] As a further improvement to the above solution, the outer wall of the monitoring gear is meshed with the four surfaces of the spur gear, and the top of the actuator housing is fixedly connected to the actuator cover.
[0013] Through the above technical solution, the retaining ring groove on the outer wall of the adjusting rod provides installation and positioning space for the retaining ring. The inner wall of the retaining ring contacts and fits into the retaining ring groove, while its bottom contacts and is positioned on the surface of the actuator limit seat. The engagement of the retaining ring and the retaining ring groove restricts the vertical displacement of the adjusting rod, preventing axial movement due to vibration or load impact during rotation. This ensures that the adjusting action always revolves around a fixed axis. This actuator incorporates the speed reduction and torque increase functions and angle feedback functions of traditional actuators, while also processing external temperature and pressure data and controlling the actuator's operation. It boasts advantages such as low cost, compact structure, and powerful functionality.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This invention utilizes a base plate fixed to the bottom of the actuator's lower housing to provide stable support for the overall structure. A stepper motor fixed to the surface of the actuator's lower housing serves as the core power source. When external temperature or pressure signals trigger control commands, the stepper motor starts, and the drive gear fixed to its output end rotates synchronously with the motor's output shaft, transmitting power to subsequent gear transmission components. This provides initial power for the actuator's adjustment actions. The outer wall of the drive gear meshes with a spur gear, causing it to rotate. The top of the spur gear is rotatably connected to the inner wall of the actuator's lower housing, and the bottom is rotatably connected to the inner wall of the base plate. This double support ensures stable rotation without deviation, preventing transmission failure due to gear wobbling. The rotation structure of the remaining spur gears is identical. Then, the outer wall of spur gear one meshes with spur gear two, which in turn meshes with spur gear three, and so on, until power is transmitted step-by-step through the continuous meshing of four spur gears. Simultaneously, by utilizing the difference in the number of teeth between each gear, the rotational speed is reduced and the torque is increased, meeting the torque requirements of the subsequent adjustment rod and ensuring stable driving of controlled components such as air valves and valves. Then, the outer wall of the spur gear meshes with the half gear, transmitting the power after multi-stage adjustment to the half gear. The adjustment rod, fixed to the outer wall of the half gear, rotates synchronously with the half gear, directly driving the controlled components such as the air valve disc and valve core. The outer wall of the adjustment rod is simultaneously rotatably connected to the inner wall of the bottom limit seat fixed at the top of the base plate and the inner wall of the top limit seat fixed on the surface of the actuator's lower housing. Through the double limit at the top and bottom, it is ensured that the adjustment rod rotates only axially without radial offset, ensuring the accuracy of the adjustment angle. The integrated design reduces the connection of independent components, reducing the risk of failure due to loose wiring or signal interference, while saving on parts and installation costs and providing wider adaptability.
[0016] This invention provides installation and positioning space for the retaining ring through a retaining ring groove on the outer wall of the adjusting rod. The inner wall of the retaining ring contacts and fits into the retaining ring groove, while its bottom contacts and is positioned on the surface of the actuator limit seat. The engagement of the retaining ring with the retaining ring groove restricts the vertical displacement of the adjusting rod, preventing axial movement due to vibration or load impact during rotation and ensuring that the adjustment action always revolves around a fixed axis. A second limiting groove at the top of the adjusting rod slides into the outer wall of the actuator limit seat. The actuator limit seat is fitted over the adjusting rod, and together with the bottom and top limit seats, further constrains the radial offset of the adjusting rod, ensuring that the adjusting rod can only rotate stably along the axial direction, thus improving the angle adjustment accuracy. An actuator clamping rod, slidably connected to the inner wall of the actuator limit seat, passes through the limit seat, and its outer wall is threaded with two limit nuts, located on both sides of the actuator limit seat. By rotating the two limit nuts and tightening them toward the actuator limit seat, the threaded locking action of the nuts is used to clamp and fix the valve and other components through the actuator clamping rod, preventing the limit components from loosening due to long-term vibration and ensuring the continuous effectiveness of the limit function. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the lower shell of the actuator of this utility model;
[0019] Figure 3 This is a schematic diagram of the drive gear structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the spur gear of this utility model;
[0021] Figure 5 This is a schematic diagram of the four structures of the spur gear of this utility model;
[0022] Figure 6 This is a schematic diagram of the circuit board structure of this utility model;
[0023] Figure 7 This is a schematic diagram of the exploded structure of the snap ring of this utility model;
[0024] Figure 8 This is a schematic cross-sectional view of the actuator limit seat of this utility model.
[0025] Explanation of key symbols:
[0026] 1. Actuator lower housing; 2. Base plate; 3. Stepper motor; 4. Drive gear; 5. Spur gear one; 6. Spur gear two; 7. Spur gear three; 8. Spur gear four; 9. Half gear; 10. Bottom limit seat; 11. Adjusting rod; 12. Top limit seat; 13. Snap ring groove; 14. Snap ring; 15. Limit groove two; 16. Actuator limit seat; 17. Actuator clamping rod; 18. Limit nut; 19. Circuit board; 20. Monitoring gear; 21. Actuator top cover. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example
[0028] Please combine Figure 1-8 An actuator with automatic temperature and pressure control according to this embodiment includes an actuator lower housing 1. A base plate 2 is fixedly connected to the bottom of the actuator lower housing 1. A stepper motor 3 is fixedly connected to the surface of the actuator lower housing 1. A drive gear 4 is fixedly connected to the output end of the stepper motor 3. A spur gear 5 is meshed with the outer wall of the drive gear 4. A spur gear 6 is meshed with the outer wall of the spur gear 5. A spur gear 7 is meshed with the outer wall of the spur gear 6. A spur gear 8 is meshed with the outer wall of the spur gear 7. A half gear 9 is meshed with the outer wall of the spur gear 8. A bottom limiting seat 10 is fixedly connected to the top of the base plate 2. An adjusting rod 11 is fixedly connected to the outer wall of the half gear 9. The outer wall of the adjusting rod 11 is rotatably connected to the inner wall of the bottom limiting seat 10. A top limiting seat 12 is rotatably connected to the outer wall of the adjusting rod 11.
[0029] The top of the spur gear 5 is rotatably connected to the inner wall of the lower housing 1 of the actuator, the bottom of the spur gear 5 is rotatably connected to the inner wall of the base plate 2, and the top limiting seat 12 is fixedly connected to the surface of the lower housing 1 of the actuator.
[0030] The outer wall of the adjusting rod 11 is provided with a retaining spring groove 13, and a retaining spring 14 is provided in contact with the inner wall of the retaining spring groove 13. A limit groove 15 is provided at the top of the adjusting rod 11.
[0031] The outer wall of the adjusting rod 11 is slidably connected to the actuator limit seat 16. The bottom of the snap ring 14 is in contact with the surface of the actuator limit seat 16. The outer wall of the actuator limit seat 16 is slidably connected to the inner wall of the limit groove 15.
[0032] The actuator clamping rod 17 is slidably connected to the inner wall of the actuator limit seat 16, and the limit nut 18 is threadedly connected to the outer wall of the actuator clamping rod 17. There are two limit nuts 18.
[0033] A circuit board 19 is fixedly connected to the inner wall of the lower housing 1 of the actuator, and a monitoring gear 20 is rotatably connected to the inner wall of the lower housing 1 of the actuator. The circuit board 19 contains an STM32 microcontroller, a torque signal processing circuit, a resistance, 0-10V, 4-20mA signal processing circuit, and an angle sensor. When the circuit board collects the resistance signal fed back by the external PT or NTC temperature sensor, or the analog signal (such as 0-10V, 4-20mA) transmitted by the pressure sensor or temperature sensor through the transmitter, it will compare it with the control target value set in the MCU. After calculation by the MCU, it controls the stepper motor to run and drive the gear set to rotate forward and reverse, so as to realize the automatic angle control of the actuator.
[0034] The outer wall of the monitoring gear 20 is meshed with the surface of the spur gear 8, and the top of the actuator housing 1 is fixedly connected to the actuator cover 21.
[0035] The implementation principle of an actuator with automatic temperature and pressure control in this embodiment is as follows: The bottom plate 2, fixed to the bottom of the actuator's lower housing 1, provides stable support for the overall structure, and the stepper motor 3, fixed to its surface, is the core power source. When external temperature and pressure signals trigger control commands, the stepper motor 3 starts, and the drive gear 4, fixed at its output end, rotates synchronously with the motor shaft, transmitting power to the subsequent gear assembly. Then, the drive gear 4 meshes with the spur gear 5, driving it to rotate. The top of the spur gear 5 is connected to the inner wall of the actuator's lower housing 1, and the bottom is connected to the inner wall of the bottom plate 2. The double support from the top and bottom ensures stable rotation without deviation. The rotation structure of the other spur gears 6, 7, and 8 is the same. Spur gear 5 meshes sequentially with spur gear 6, spur gear 7, and spur gear 8, achieving power transmission through four stages of continuous transmission. By utilizing the difference in the number of teeth, speed reduction and torque increase are achieved to meet the torque requirements of the adjusting rod 11. Spur gear 8 meshes with half gear 9, transmitting power to half gear 9. The adjusting rod 11, which is fixed on its outer wall, rotates synchronously, directly driving the controlled components such as the air valve disc and valve core. The outer wall of the adjusting rod 11 is connected to the inner wall of the bottom limiting seat 10 at the top of the base plate 2, and also to the inner wall of the top limiting seat 12 on the surface of the actuator lower shell 1. The double limiting ensures that it rotates only along the axial direction without radial displacement, thus guaranteeing adjustment accuracy. At the same time, the retaining spring groove 13 on the outer wall of the adjusting rod 11 allows the retaining spring 14 to be installed and fitted. The bottom of the retaining spring 14 contacts the actuator limiting seat 16 to prevent axial movement. The second limiting groove 15 at the top of the adjusting rod 11 is slidably connected to the outer wall of the actuator limiting seat 16, which, together with the bottom and top limiting seats, further constrains radial displacement. The actuator clamping rod 17 on the inner wall of the actuator limit seat 16 passes through the limit seat, and two limit nuts 18 on the outer wall are located on both sides of the limit seat. Tightening the nuts can clamp and fix the valve, etc. through the clamping rod to prevent the limit components from loosening. At the same time, the monitoring gear 20 on the inner wall of the lower shell 1 of the actuator meshes with the spur gear 4 8. When the spur gear 4 8 rotates, it drives the monitoring gear 20 to rotate synchronously. The monitoring gear 20 transmits information such as speed and direction to the circuit board 19 fixed on the inner wall of the lower shell 1 of the actuator. The angle sensor or signal processing circuit on the circuit board 19 collects data and combines it with external temperature and pressure signals to judge the actual rotation state of the regulating rod 11 in real time, so as to realize automatic temperature and pressure control. The overall integrated design is simple to install and low in cost.
[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. An actuator with automatic temperature and pressure control, characterized in that, The actuator includes a lower housing (1), a base plate (2) is fixedly connected to the bottom of the lower housing (1), a stepper motor (3) is fixedly connected to the surface of the lower housing (1), a drive gear (4) is fixedly connected to the output end of the stepper motor (3), a spur gear (5) is meshed with the outer wall of the drive gear (4), a spur gear (6) is meshed with the outer wall of the spur gear (5), and a spur gear (6) is meshed with the outer wall of the spur gear (6). Wheel 3 (7), the outer wall of the spur gear 3 (7) is meshed with a spur gear 4 (8), the outer wall of the spur gear 4 (8) is meshed with a half gear (9), the top of the base plate (2) is fixedly connected with a bottom limiting seat (10), the outer wall of the half gear (9) is fixedly connected with an adjusting rod (11), the outer wall of the adjusting rod (11) is rotatably connected to the inner wall of the bottom limiting seat (10), and the outer wall of the adjusting rod (11) is rotatably connected to a top limiting seat (12).
2. An actuator with automatic temperature and pressure control as described in claim 1, characterized in that: The top of the spur gear (5) is rotatably connected to the inner wall of the lower shell (1) of the actuator, the bottom of the spur gear (5) is rotatably connected to the inner wall of the base plate (2), and the top limiting seat (12) is fixedly connected to the surface of the lower shell (1) of the actuator.
3. An actuator with automatic temperature and pressure control as described in claim 1, characterized in that: The outer wall of the adjusting rod (11) is provided with a retaining spring groove (13), the inner wall of the retaining spring groove (13) is provided with a retaining spring (14), and the top of the adjusting rod (11) is provided with a limit groove (15).
4. An actuator with automatic temperature and pressure control as described in claim 3, characterized in that: The outer wall of the adjusting rod (11) is slidably connected to the actuator limiting seat (16), the bottom of the snap ring (14) is in contact with the surface of the actuator limiting seat (16), and the outer wall of the actuator limiting seat (16) is slidably connected to the inner wall of the limiting groove (15).
5. An actuator with automatic temperature and pressure control as described in claim 4, characterized in that: The actuator clamping rod (17) is slidably connected to the inner wall of the actuator limiting seat (16), and the limiting nut (18) is threadedly connected to the outer wall of the actuator clamping rod (17). There are two limiting nuts (18).
6. An actuator with automatic temperature and pressure control as described in claim 5, characterized in that: A circuit board (19) is fixedly connected to the inner wall of the lower housing (1) of the actuator, and a monitoring gear (20) is rotatably connected to the inner wall of the lower housing (1) of the actuator.
7. An actuator with automatic temperature and pressure control as described in claim 6, characterized in that: The outer wall of the monitoring gear (20) is meshed with the surface of the spur gear four (8), and the top of the actuator lower shell (1) is fixedly connected with the actuator upper cover (21).