Opening indicator for gear type pneumatic motor actuating mechanism

Abstract

An opening indicator for a gear type pneumatic motor actuating mechanism comprises an actuator sleeve, the actuator sleeve comprises a linkage portion, one end of the linkage portion is in linkage with a valve so that the actuator sleeve can drive the valve to be opened and closed when rotating, and the actuator sleeve further comprises an indicating portion rotating along with the linkage portion. A position feedback device is arranged on the indicating part and comprises an indicating assembly which moves up and down along the indicating part along with rotation of the indicating part, and the distance of the indicating assembly moving up and down along the indicating part corresponds to the number of valve stroke turns. The opening indicator for the gear type pneumatic motor actuating mechanism has the advantages that the position feedback device is integrated on the indicating portion of the actuator sleeve, and accurate monitoring of the opening and closing degree of a valve is achieved.

Description

Technical Field

[0001] This utility model relates to an opening indicator for a motor, and more particularly to an opening indicator for a gear-type pneumatic motor actuator. Background Technology

[0002] Gear-driven pneumatic motor actuators offer a highly efficient and reliable driving method for valves. These actuators utilize compressed air as a power source, transmitting rotary motion to the valve via a built-in gear motor to achieve precise valve control. Their compact design, powerful torque output, and rapid response make them ideal for industrial valves requiring frequent operation or operating in harsh environments. Gear-driven pneumatic motor actuators ensure stable valve operation under various pressure and temperature conditions, reducing maintenance needs and improving the safety and efficiency of the overall process.

[0003] Chinese patent document CN203297729U discloses a gear-type pneumatic motor actuator, including a housing and a sleeve. The sleeve is inserted into the housing, with one end of the sleeve linked to a valve and a handwheel mounted on the other end. A pneumatic motor is housed inside the housing, and a manual pneumatic switching device is provided between the sleeve and the pneumatic motor. The manual pneumatic switching device includes an inner clutch disc, an outer clutch disc, a switching handle, a switching seat, an upper switching pin, and a lower switching pin. The lower end face of the upper switching pin and the upper end face of the lower switching pin are in inclined sliding engagement. A switching key is also provided on the lower switching pin, and the switching key, under the inclined sliding engagement between the upper and lower switching pins, can lock the inner and outer clutch discs together or keep them disengaged.

[0004] The above-described solution is a simple gear-type pneumatic motor actuator that is not limited by power supply and can achieve manual / pneumatic switching. However, the above solution has the following shortcomings: the existing technology lacks a position feedback device, making it difficult to achieve more precise position control and monitoring. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an opening indicator for a gear-type pneumatic motor actuator that can provide position feedback.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an opening indicator for a gear-type pneumatic motor actuator, comprising an actuator sleeve, wherein the actuator sleeve includes a linkage part that is linked to a valve at one end so that the valve opens and closes when the actuator sleeve rotates, and the actuator sleeve also includes an indicator part that rotates together with the linkage part, wherein the indicator part is provided with a position feedback device, the position feedback device including an indicator component that moves up and down along the indicator part as the indicator part rotates, and the distance that the indicator component moves up and down along the indicator part corresponds to the number of valve strokes.

[0007] The beneficial effects of this invention are as follows: This design of an opening indicator for a gear-type pneumatic motor actuator achieves precise monitoring of the valve's opening and closing degree by integrating a position feedback device into the indicating part of the actuator sleeve. The distance the indicating component moves up and down along the indicating part corresponds to the number of valve strokes. This feature allows operators to intuitively and accurately understand the real-time position of the valve, thereby effectively controlling fluid flow. This precise opening degree indication not only improves the reliability of process control but also enhances system safety, as it prevents damage caused by excessive valve opening or closing. Furthermore, this design facilitates fault diagnosis and periodic inspections by maintenance personnel, ensuring the accuracy and consistency of valve operation. For automated control systems, accurate opening degree feedback is crucial for achieving efficient and precise control.

[0008] Furthermore, the indicator part is detachably fixed to the linkage part, and the indicator assembly includes a threaded sleeve and an indicator element sleeved on the threaded sleeve. The inner diameter surface of the threaded sleeve and the outer diameter surface of the indicator part are provided with matching threads.

[0009] This design allows the indicator to be detachably attached to the linkage, providing great flexibility and adaptability. Through the engagement of the threaded sleeve and the indicator element fitted onto it, the indicator and threaded sleeve can be easily replaced according to the number of valve strokes to accommodate valves with different stroke lengths. This modular design simplifies and speeds up maintenance and replacement, reducing maintenance costs and downtime. It also allows users to customize the opening indicator to meet different application needs, improving system compatibility and scalability. Furthermore, the threaded fit design ensures the stability and durability of the indicator assembly, enabling the indicator to maintain accurate and reliable performance under various environmental conditions, which is crucial for ensuring the accuracy and safety of valve operation.

[0010] Furthermore, a fixing post is provided at the center of the end face corresponding to the indicating part and the linkage part, and a fixing hole is provided for the linkage part corresponding to the fixing post. The fixing post and the fixing hole are used to fix the linkage part and the indicating part.

[0011] In the design of this gear-type pneumatic motor actuator's opening indicator, the indicating part and the linkage part are precisely fixed through the cooperation of a fixing column and a fixing hole, ensuring alignment and stability between them. To enhance the stability of the fixing structure, measures to prevent circumferential displacement can be added to the fixing hole and fixing column, such as setting a slot or using a lock nut. This effectively prevents relative rotation of the linkage part and the indicating part due to vibration or external force, ensuring the accuracy and reliability of the opening indication. This enhanced fixing mechanism not only improves the structural integrity of the actuator but also reduces maintenance requirements and extends the service life of the equipment. Furthermore, precise fixing ensures the synchronization and consistency during valve operation, which is crucial for achieving precise control and improving system efficiency.

[0012] Furthermore, the actuator sleeve is symmetrically provided with two guide posts in the radial extension direction, and the indicator is respectively sleeved on the two guide posts. The two guide posts cooperate to prevent the indicator from moving circumferentially. The outer circumferential surface of the threaded sleeve is provided with a placement groove for placing the indicator. The placement groove is used to prevent the indicator from moving along the direction of the indicator part.

[0013] In the design of the opening indicator for a gear-type pneumatic motor actuator, two guide posts are symmetrically arranged in the radial extension direction of the actuator sleeve, and the indicator element is respectively fitted onto these two guide posts, effectively limiting the circumferential movement of the indicator element. This design cleverly utilizes the cooperation of the two guide posts to prevent circumferential movement of the indicator element due to friction with the threaded sleeve, enhancing the structural stability and operational accuracy of the indicator. Simultaneously, the placement groove on the outer circumference of the threaded sleeve further prevents the indicator element from moving along the indicating direction, ensuring the stability of the indicator element during use and preventing it from falling off. These characteristics work together to not only improve the reliability and accuracy of the opening indication but also reduce maintenance costs and potential safety risks, ensuring precise control of valve operation and long-term stable operation of the system.

[0014] Furthermore, one end of the indicator is provided with an indicator arrow, and the housing is provided with an observation window with scale markings on it corresponding to the indicator arrow.

[0015] One end of the indicator is equipped with an indicator arrow, and the housing has a viewing window with graduations corresponding to the indicator arrow. This design provides users with an intuitive and clear way to read the valve opening. The combination of the indicator arrow and the graduations allows operators to directly observe the position of the indicator arrow through the viewing window, thus quickly understanding the valve's opening status. This intuitive visual design improves operational convenience and accuracy, reducing the risk of misreading, especially in low-light conditions or under remote monitoring. Furthermore, the precision of the graduations facilitates precise valve control, ensuring the stability and safety of the process flow. This user-friendly design also facilitates regular inspections and calibrations by maintenance personnel, ensuring the accuracy and consistency of valve operation, which is of great significance for improving the efficiency and reliability of the entire system.

[0016] Meanwhile, as a preferred method, a slot can be provided on the housing, and correspondingly, a fastener is provided on the observation window, so that when the valve stroke changes and the indicator and threaded sleeve are replaced, they can be replaced simultaneously to provide a more accurate indication of the valve opening and closing degree. Attached Figure Description

[0017] Figure 1 This is an isometric view of an embodiment of the present utility model;

[0018] Figure 2 This is a front view of an embodiment of the present utility model;

[0019] Figure 3 This is a side view of an embodiment of the present utility model.

[0020] Figure 4 This is a cross-sectional view of an embodiment of the present utility model. Detailed Implementation

[0021] This utility model provides an opening indicator for a gear-type pneumatic motor actuator, such as... Figure 1-4 As shown: The device includes a housing 1 and an actuator sleeve 2 disposed within the housing 1. The actuator sleeve 2 includes a linkage part 21, one end of which is linked to a valve (not shown) so that rotating the actuator sleeve 2 causes the valve (not shown) to open and close. An indicator part 22 is detachably disposed on the linkage part 21. A fixing post 221 and a fixing hole 211 are respectively provided on the corresponding end faces of the indicator part 22 and the linkage part 21. In this embodiment, these are a bolt and a threaded hole, respectively. Alternatively, a snap-fit ​​post (not shown) can be symmetrically provided at the front end of the fixing post 221, and a snap-fit ​​hole (not shown) can be provided at the end of the corresponding fixing hole 211. These two components work together to prevent the indicator part 22 from detaching from the linkage part 21 and to prevent circumferential displacement.

[0022] A position feedback device 3, which can move up and down along the indicator part 22, is provided on the indicator part 22. The position feedback device 3 includes a threaded sleeve 31 sleeved on the indicator part 22, an indicator 32 provided on the threaded sleeve 31, two guide posts 33 symmetrically arranged along the radial extension direction of the actuator sleeve 2, and an observation window 34 on the extension line after the two guide posts 33 are connected. Threads (not shown in the figure) are provided on the inner diameter surface of the threaded sleeve 31 and the outer peripheral surface of the indicator part 22. The distance that the threaded sleeve 31 moves up and down along the indicator part 22 corresponds to the number of strokes of the valve (not shown in the figure). That is, the distance that the threaded sleeve 31 moves up and down along the indicator part 22 is changed by setting the pitch of the thread (not shown in the figure). A placement groove 311 is provided on the outer peripheral surface of the threaded sleeve 31. That is, two annular baffles 312 are provided on the outer peripheral surface of the threaded sleeve 31, and a placement groove 311 for placing the indicator 32 is formed between the two annular baffles 312. The indicator 32 has two guide holes 322 corresponding to the two guide posts 33, and is fitted onto the guide posts 33 through these two guide holes 322, with the indicator arrow 321 at one end pointing towards the observation window 34. The observation window 34 has a scale marking (not shown) corresponding to the pitch of the thread (not shown in the figure), which corresponds to the number of strokes of the valve (not shown in the figure). The observation window 34 is equipped with a snap-fit ​​element (not shown in the figure), and the corresponding housing has a corresponding groove (not shown in the figure), so that when the number of strokes of the valve (not shown in the figure) changes, the corresponding observation window 34, threaded sleeve 31, and indicator 22 can be replaced.

[0023] The usage process of this embodiment is as follows: Rotate the actuator sleeve 2 to drive the threaded sleeve 31 to move up and down along the indicator part 22, thereby driving the indicator arrow 321 to move at the observation window 34, so as to accurately identify the valve opening and closing degree through the scale mark (not shown in the figure) at the observation window 34.

[0024] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. An opening indicator for a gear-type pneumatic motor actuator, comprising a housing and an actuator sleeve, wherein the actuator sleeve includes a linkage part at one end that is linked to a valve so that rotating the actuator sleeve drives the valve to open or close, characterized in that: The actuator sleeve also includes an indicator part that rotates together with the linkage part. The indicator part is provided with a position feedback device. The position feedback device includes an indicator component that moves up and down along the indicator part as the indicator part rotates. The distance that the indicator component moves up and down along the indicator part corresponds to the number of valve strokes.

2. The opening indicator for a gear-type pneumatic motor actuator according to claim 1, characterized in that: The indicator part is detachably fixed to the linkage part. The indicator assembly includes a threaded sleeve and an indicator element sleeved on the threaded sleeve. The inner diameter surface of the threaded sleeve and the outer diameter surface of the indicator part are provided with matching threads.

3. The opening indicator for a gear-type pneumatic motor actuator according to claim 2, characterized in that: A fixing post is provided at the center of the end face corresponding to the indicating part and the linkage part. The linkage part is provided with a fixing hole corresponding to the fixing post. The fixing post and the fixing hole are used to fix the linkage part and the indicating part.

4. The opening indicator for a gear-type pneumatic motor actuator according to claim 2, characterized in that: The actuator sleeve has two guide posts symmetrically arranged in the radial extension direction. The indicator is respectively sleeved on the two guide posts. The two guide posts cooperate to prevent the indicator from moving circumferentially. The outer circumferential surface of the threaded sleeve is provided with a placement groove for placing the indicator. The placement groove is used to prevent the indicator from moving along the direction of the indicator part.

5. The opening indicator for a gear-type pneumatic motor actuator according to claim 4, characterized in that: One end of the indicator is provided with an indicator arrow, and the housing is provided with an observation window with scale markings on it corresponding to the indicator arrow.

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