Pneumatic actuator with sealing structure
By designing sealing and auxiliary mechanisms in the pneumatic actuator, the precise installation of the sealing cover and the airtightness of the pneumatic actuator are achieved, solving the problems of decreased accuracy and increased labor intensity during installation, and improving the stability and ease of operation of the device.
Patent Information
- Application Number
- CN202522585779.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-05
AI Technical Summary
During the installation of pneumatic actuators, operators need to manually perform sealing and connection. Prolonged operation may lead to decreased accuracy and increased labor intensity, affecting the reliability of the device.
A pneumatic actuator with a sealing structure was designed, including a sealing mechanism and an auxiliary mechanism. The sealing cover is accurately installed by sliding connection between the connecting block and the guide block, in conjunction with the limiting ring and the sealing gasket. The auxiliary mechanism drives the limiting plate through the sliding plate to provide accurate positioning for the sealing cover and reduce human error.
It improves the installation accuracy of the sealing cover and the airtightness of the pneumatic actuator, reduces the labor intensity of operators, enhances the stability and ease of operation of the device, and ensures reliability in harsh environments.
Smart Images

Figure CN224931967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pneumatic actuator technology, and in particular to a pneumatic actuator with a sealed structure. Background Technology
[0002] A pneumatic actuator is a device that uses compressed air as a power source to drive mechanical equipment. It is widely used in automated control systems. It converts the energy of compressed air into mechanical energy, thereby achieving precise control of mechanical parts. A pneumatic actuator is usually composed of a cylinder, piston, seals, and transmission device. When working, compressed air enters the cylinder, pushing the piston to move, which in turn drives the connected load or mechanical parts to complete the corresponding operation. It has the advantages of fast response speed, simple operation, and low cost. It is widely used in various automated production lines, valve control, robotic arms, conveying systems, etc., to realize the functions of lifting, pushing, pulling, and rotating objects. It plays a vital role in industrial automation, improving production efficiency, reducing manual operation, and ensuring high-precision and high-reliability mechanical movements.
[0003] Currently, there are various types of pneumatic actuators on the market. During installation, operators usually need to manually perform sealing and docking to ensure the accuracy of the installation. However, prolonged concentration may cause operator fatigue, which in turn affects the accuracy of the docking process. This not only increases the labor intensity of the operator but also reduces the overall reliability of the device. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a pneumatic actuator with a sealed structure.
[0005] This utility model is achieved by the following technical solution: a pneumatic actuator with a sealing structure, comprising a sealing mechanism, an auxiliary mechanism and a body, wherein the sealing mechanism is located at the upper end of the body and the auxiliary mechanism is located on the surface of the body; The sealing mechanism includes a sealing cover, a limiting ring fixedly connected to the bottom of the sealing cover, a sealing gasket fixedly connected to the bottom of the limiting ring, a connecting block fixedly connected to the bottom of the limiting ring, a base plate provided at the bottom of the limiting ring, a guide block fixedly connected to the upper end of the base plate, a connecting ring fixedly connected to the upper end of the base plate, and a connecting tube fixedly connected to the upper end of the sealing cover.
[0006] Through the above technical solution, the docking of the connecting block and the guide block can effectively ensure the accuracy of the sealing cover's position during installation, thereby reducing the labor intensity of operators.
[0007] As a further improvement to the above solution, the surface of the connecting block is slidably connected to the surface of the guide block.
[0008] As a further improvement to the above solution, the auxiliary mechanism includes a protective shell, the inner wall of which is slidably connected to a limiting plate, and a sliding plate is fixedly connected to the surface of the limiting plate.
[0009] Through the above technical solution, the sliding plate can drive the limiting plate to slide out, which can provide auxiliary limiting for the sealing cover, thereby further ensuring the accuracy of the sealing cover position and reducing the error caused by manual operation.
[0010] As a further improvement to the above solution, the sliding plate is located on the outside of the protective shell.
[0011] As a further improvement to the above solution, the machine body includes a shell, a sealing plate is slidably connected to the inner wall of the shell, a sealing ring is provided on the surface of the sealing plate, and a piston rod is fixedly connected to the bottom of the sealing plate.
[0012] Through the above technical solution, the cooperation between the sealing plate and the sealing ring can effectively ensure the airtightness of the pneumatic actuator, prevent gas leakage, and also effectively reduce friction and improve sealing performance.
[0013] As a further improvement to the above solution, the sealing cover is located at the upper end of the housing, and the surface of the bottom plate is fixedly connected to the inner wall of the housing.
[0014] As a further improvement to the above solution, the protective shell is fixedly connected to the surface of the housing.
[0015] The above technical solutions effectively enhance the stability of the protective shell and the robustness of the overall structure, thereby effectively ensuring the reliability of the device in various harsh working environments.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the setting of a sealing mechanism, allows the connecting block at the bottom of the sealing cover to slide smoothly on the base plate during installation and ultimately fit precisely with the guide block. When the connecting block and the guide block are tightly engaged, the limiting ring can also be firmly engaged with the connecting ring on the base plate. The sealing gasket on the limiting ring further ensures the sealing between the limiting ring and the connecting ring, effectively preventing gas leakage. At the same time, the protruding block on the limiting ring can smoothly slide into the groove on the base plate, effectively ensuring the stability of the limiting ring and preventing any loosening or displacement. The entire operation process effectively ensures the airtightness and stability of the device. Meanwhile, operators can easily and conveniently connect the sealing cover to the housing, effectively improving the overall ease of operation, reducing unnecessary labor intensity, and thus further improving the overall work efficiency and reliability.
[0017] This utility model incorporates an auxiliary mechanism. The operator opens the top of the protective shell and then slides the sliding plate, which in turn raises the limiting plate. At this point, the limiting plate provides accurate positioning for the sealing cover, thereby ensuring precise alignment between the sealing cover and the shell. This effectively reduces human error and further improves the actual performance. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the auxiliary mechanism of this utility model; Figure 3 This is a schematic diagram of the structure of the body of this utility model; Figure 4 This is a schematic diagram of the sealing mechanism of this utility model; Figure 5 This is a schematic diagram of the overall structure of the sealing mechanism of this utility model; Figure 6 This is a schematic diagram of the sealing mechanism of this utility model.
[0019] Explanation of key symbols: 1. Sealing mechanism; 11. Sealing cover; 12. Limiting ring; 13. Sealing gasket; 14. Connecting block; 15. Base plate; 16. Guide block; 17. Connecting ring; 18. Connecting pipe; 2. Auxiliary mechanism; 21. Protective shell; 22. Limiting plate; 23. Slide plate; 3. Body; 31. Shell; 32. Sealing plate; 33. Sealing ring; 34. Piston rod. Detailed Implementation
[0020] 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.
[0021] Example: Please combine Figure 1-6 This embodiment of a pneumatic actuator with a sealing structure includes a sealing mechanism 1, an auxiliary mechanism 2, and a body 3. The sealing mechanism 1 is located at the upper end of the body 3, and the auxiliary mechanism 2 is located on the surface of the body 3. The sealing mechanism 1 includes a sealing cover 11. A limiting ring 12 is fixedly connected to the bottom of the sealing cover 11. A sealing gasket 13 is fixedly connected to the bottom of the limiting ring 12. A connecting block 14 is fixedly connected to the bottom of the limiting ring 12. A base plate 15 is provided at the bottom of the limiting ring 12. A guide block 16 is fixedly connected to the upper end of the base plate 15. A connecting ring 17 is fixedly connected to the upper end of the base plate 15. A connecting pipe 18 is fixedly connected to the upper end of the sealing cover 11. The docking of the connecting block 14 and the guide block 16 can effectively ensure the accuracy of the position of the sealing cover 11 during installation, thereby reducing the labor intensity of the operator.
[0022] The surface of the connecting block 14 is slidably connected to the surface of the guide block 16.
[0023] The auxiliary mechanism 2 includes a protective shell 21. A limiting plate 22 is slidably connected to the inner wall of the protective shell 21. A sliding plate 23 is fixedly connected to the surface of the limiting plate 22. The sliding plate 23 drives the limiting plate 22 to slide out, which can provide auxiliary limiting for the sealing cover 11, thereby further ensuring the accuracy of the position of the sealing cover 11 and reducing the error caused by manual operation.
[0024] The skateboard 23 is located on the outside of the protective shell 21.
[0025] The body 3 includes a housing 31, a sealing plate 32 is slidably connected to the inner wall of the housing 31, a sealing ring 33 is provided on the surface of the sealing plate 32, and a piston rod 34 is fixedly connected to the bottom of the sealing plate 32. The cooperation between the sealing plate 32 and the sealing ring 33 can effectively ensure the airtightness of the pneumatic actuator, prevent gas leakage, and also effectively reduce friction and improve sealing performance.
[0026] The sealing cover 11 is located at the upper end of the housing 31, and the surface of the base plate 15 is fixedly connected to the inner wall of the housing 31.
[0027] The protective shell 21 is fixedly connected to the surface of the housing 31, which effectively enhances the stability of the protective shell 21 and the robustness of the overall structure, thereby effectively ensuring the reliability of the device in various harsh working environments.
[0028] The implementation principle of a pneumatic actuator with a sealing structure in this embodiment is as follows: When installing the sealing cover 11, the operator can open the top of the protective shell 21, and then slide the sliding plate 23 upward to drive the limiting plate 22 to rise together. The appearance of the limiting plate 22 can effectively limit the sealing cover 11, thereby ensuring the accuracy of the sealing cover 11 when docking with the shell 31, effectively reducing the labor intensity of the operator. Then, the connecting block 14 at the bottom of the sealing cover 11 can slide smoothly on the base plate 15, and finally fit tightly with the guide block 16. The sliding of the connecting block 14 can play an auxiliary calibration role, thereby effectively ensuring the accuracy of the position of the sealing cover 11 during installation. When the connecting block 14 and the guide block 16 are in close contact, the limiting ring 12 will also fit tightly with the connecting ring 17 on the base plate 15. The protrusion on the limiting ring 12 can accurately slide into the groove on the base plate 15. This ensures the overall stability of the limiting ring 12 and prevents shaking. The sealing gasket 13 installed on the limiting ring 12 further ensures the sealing between the limiting ring 12 and the connecting ring 17. At this time, the limiting ring 12 is completely in contact with the base plate 15. The operator can fix the sealing cover 11 to the housing 31 with bolts, thereby effectively ensuring the overall stability of the device. The device blows gas into the interior of the housing 31 through the connecting pipe 18, thereby pushing the sealing plate 32 to move. The sealing plate 32 can drive the piston rod 34 to move together. The sealing ring 33 can further ensure the sealing between the sealing plate 32 and the housing 31, thereby effectively ensuring the stable operation of the device. While ensuring excellent sealing, the entire device also facilitates the operator to achieve precise docking when installing the sealing cover 11 and the housing 31, further reducing the labor intensity of the operator and effectively improving the convenience of operation.
[0029] 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. A pneumatic actuator with a sealed structure, characterized in that, It includes a sealing mechanism (1), an auxiliary mechanism (2) and a body (3), wherein the sealing mechanism (1) is located at the upper end of the body (3) and the auxiliary mechanism (2) is located on the surface of the body (3); The sealing mechanism (1) includes a sealing cover (11), a limiting ring (12) is fixedly connected to the bottom of the sealing cover (11), a sealing gasket (13) is fixedly connected to the bottom of the limiting ring (12), a connecting block (14) is fixedly connected to the bottom of the limiting ring (12), a base plate (15) is provided at the bottom of the limiting ring (12), a guide block (16) is fixedly connected to the upper end of the base plate (15), a connecting ring (17) is fixedly connected to the upper end of the base plate (15), and a connecting tube (18) is fixedly connected to the upper end of the sealing cover (11).
2. A pneumatic actuator with a sealed structure as described in claim 1, characterized in that: The surface of the connecting block (14) is slidably connected to the surface of the guide block (16).
3. A pneumatic actuator with a sealed structure as described in claim 2, characterized in that: The auxiliary mechanism (2) includes a protective shell (21), the inner wall of which is slidably connected to a limiting plate (22), and the surface of the limiting plate (22) is fixedly connected to a sliding plate (23).
4. A pneumatic actuator with a sealed structure as described in claim 3, characterized in that: The skateboard (23) is located outside the protective shell (21).
5. A pneumatic actuator with a sealed structure as described in claim 4, characterized in that: The body (3) includes a shell (31), a sealing plate (32) is slidably connected to the inner wall of the shell (31), a sealing ring (33) is provided on the surface of the sealing plate (32), and a piston rod (34) is fixedly connected to the bottom of the sealing plate (32).
6. A pneumatic actuator with a sealed structure as described in claim 5, characterized in that: The sealing cap (11) is located at the upper end of the housing (31), and the surface of the bottom plate (15) is fixedly connected to the inner wall of the housing (31).
7. A pneumatic actuator with a sealed structure as described in claim 6, characterized in that: The protective shell (21) is fixedly connected to the surface of the shell (31).
