Valve actuator guard

Abstract

The utility model relates to valve actuator protection technical field, and disclose a valve actuator protection cover, including pneumatic actuator, the pneumatic actuator periphery is provided with protection mechanism, the protection mechanism periphery is provided with sealing mechanism, the pneumatic actuator bottom fixedly connected with valve seat, the protection mechanism includes fixed base, the fixed base fixedly connected in pneumatic actuator top left side, the fixed base inside is inserted with the connecting block, the connecting block front side fixedly connected with protection cover body, when using, through setting protection mechanism, when the pneumatic actuator used by valve needs to carry out protection work, connecting block is inserted in the fixed base inside, just can make protection cover body sliding connection in the pneumatic actuator periphery, and connecting block and protection cover body are provided with two groups, and are located the pneumatic actuator front and back two sides respectively, when two groups of protection cover body all are located in the pneumatic actuator periphery, just can insert the block and insert in the fixed base and connecting block inside.

Description

Technical Field

[0001] This utility model relates to the field of valve actuator protection technology, specifically a valve actuator protective cover. Background Technology

[0002] In industrial automation control systems, valve actuators are the core components connecting control signals and valve actions, undertaking the key functions of regulating pipeline medium flow, pressure, and opening / closing status. Among them, pneumatic actuators are widely used in industrial fields such as petrochemicals, power systems, municipal water treatment, and metallurgical smelting due to their advantages such as clean power source, fast response speed, and adaptability to medium and high pressure conditions. However, these application scenarios are often accompanied by harsh operating environments. The dust, high humidity and water vapor corrosion, corrosive gas volatilization, and accidental mechanical collisions during equipment operation and maintenance that are common in industrial sites can all directly threaten the structural integrity and operational stability of pneumatic actuators. Therefore, they need to be protected by special protective covers. Existing protective covers mostly adopt a single fixed point or a simple snap-on connection structure. Under the continuous vibration conditions in industrial sites, problems such as loose connection and positional displacement are prone to occur, resulting in protective gaps between the protective cover and the actuator. This not only weakens the protective effect, but may even cause equipment safety hazards due to the protective cover falling off. In order to ensure heat dissipation efficiency, some protective covers adopt an open or semi-open design, which leads to a significant reduction in dustproof, waterproof and corrosion-resistant capabilities. Moisture, dust and corrosive media can easily penetrate into the actuator, causing corrosion of internal transmission parts and aging of electrical components, directly shortening the life of the actuator. On the other hand, closed protective covers with better sealing often have unreasonable ventilation channel design, which prevents the heat generated by the actuator during operation from being effectively dissipated, thus affecting its action accuracy and response speed. Therefore, a protective cover for the valve actuator needs to be designed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a protective cover for a valve actuator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a protective cover for a valve actuator, including a pneumatic actuator, a protective mechanism is provided around the pneumatic actuator, a sealing mechanism is provided around the protective mechanism, and a valve seat is fixedly connected to the bottom of the pneumatic actuator; The protective mechanism includes a fixed base, which is fixedly connected to the top left side of the pneumatic actuator. A connecting block is inserted inside the fixed base, and a protective cover body is fixedly connected to the front side of the connecting block. The protective cover body is slidably connected to the periphery of the pneumatic actuator. An insert block is inserted inside the fixed base, penetrating the interior of the connecting block. A protective frame is fixedly connected to the top of the insert block, and a fixing pin is threaded inside the protective frame. The fixing pin is located inside the sealing mechanism. A fixing frame is fixedly connected to the right side of the front surface of the protective cover body. A filter plate is fixedly connected to the front side of the fixing frame. A connecting ring is threadedly connected to the periphery of the front surface of the fixing frame. An air inlet pipe is fixedly connected to the front side of the connecting ring, and a guide plate is fixedly connected to the inner side of the air inlet pipe.

[0005] Preferably, the fixing pin passes through the interior of the fixing seat, and the front side of the guide plate is inclined downward, which facilitates the fixing of the connecting block, the fixing seat and the protective frame by the fixing pin.

[0006] Preferably, the fixed base, insert block, protective frame and fixing pin are provided in two sets and are symmetrically distributed on the left and right sides of the top of the pneumatic actuator, so as to ensure the stability of the two sets of protective cover bodies by setting two sets.

[0007] Preferably, the connecting block, protective cover body, fixing frame, filter plate, connecting ring, air inlet pipe and guide plate are provided in two sets and symmetrically distributed on the front and rear sides of the pneumatic actuator. The two sets of protective cover bodies are slidably connected to the periphery of the pneumatic actuator and are interlocked with each other. The front set of protective cover bodies has a connecting groove inside. The connecting groove is circular, so that by setting two sets, the periphery of the pneumatic actuator can be fully protected.

[0008] Preferably, the sealing mechanism includes a first limiting frame, which is fixedly connected to the top left side of the cover. A sealing frame is slidably connected inside the first limiting frame. The sealing frame is slidably connected to the periphery of the protective cover body. A second limiting frame is slidably connected to the bottom periphery of the sealing frame. The second limiting frame is fixedly connected to the bottom left side of the protective cover body.

[0009] Preferably, two sets of the first limiting frame and the second limiting frame are provided, and are located on the top left and bottom left of the two sets of protective cover bodies, respectively. The top of the sealing frame is internally threaded to the periphery of the fixing pin, so that the sealing frame can be limited by the first limiting frame and the second limiting frame.

[0010] Preferably, the top periphery of the sealing frame is slidably connected to the inside of the protective frame, and the sealing frame is located on the periphery of the two sets of protective cover bodies, so as to facilitate sealing the connection between the two sets of protective cover bodies through the sealing frame.

[0011] Compared with the prior art, the present invention provides a protective cover for a valve actuator, which has the following advantages: 1. This valve actuator protective cover, through its designed protective mechanism, allows the protective cover body to slide onto the periphery of the pneumatic actuator when the pneumatic actuator requires protection. Two sets of connecting blocks and protective cover bodies are provided, located on the front and rear sides of the pneumatic actuator respectively. When both sets of protective cover bodies are located around the pneumatic actuator, the connecting blocks can be inserted into the fixed base and connecting blocks, placing the protective frame on top of the fixed base and sliding it to the top periphery of the sealing frame. At this point, the fixing pin can be threaded into the protective frame and fixed base to ensure fixation. The stability between the base, connecting block, protective cover body, protective frame and pneumatic actuator is ensured by two sets of protective cover bodies slidingly inserting to wrap around the pneumatic actuator. With the double symmetrical fixation of the fixed base, insert block, protective frame and fixing pin, the protective cover is not only firmly installed to prevent loosening and displacement, but also completely isolates external impact and foreign object collision. The filter plate in the fixed frame can filter dust and impurities in the airflow entering the protective cover to prevent them from adhering to the actuator body and affecting operation. The forward tilting design of the guide plate can also prevent rainwater backflow. At the same time, the air inlet pipe can be disassembled through the connecting ring to facilitate the adsorption and cleaning of dust on the filter plate.

[0012] 2. The valve actuator protective cover, through the set sealing mechanism, when the two sets of protective cover bodies are inserted into each other and located outside the pneumatic actuator, the sealing frame is slidably connected inside the first limit frame and the second limit frame, so that the sealing frame is tightly fitted to the outside of the two sets of protective cover bodies, forming a double sealing barrier, effectively preventing water vapor, corrosive gases, etc. from entering the actuator, reducing the risk of parts corrosion and aging, and extending the service life of the pneumatic actuator. At the same time, the linkage between the sealing frame, the protective frame, and the fixing pin takes into account both sealing and structural stability, improving the overall protection reliability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 A schematic diagram of the pneumatic actuator and valve seat structure; Figure 3 This is a schematic diagram of the protective mechanism structure; Figure 4 This is a schematic diagram of the top structure of the mounting base; Figure 5 This is a schematic diagram of the front structure of the protective shield body; Figure 6 This is a schematic diagram of the sectional structure of the fixed frame; Figure 7 This is a schematic diagram of the sealing mechanism.

[0014] In the diagram: 1. Pneumatic actuator; 2. Protective mechanism; 3. Sealing mechanism; 4. Valve seat; 21. Fixed seat; 22. Connecting block; 23. Protective cover body; 24. Insert block; 25. Protective frame; 26. Fixing pin; 27. Fixing frame; 28. Filter plate; 29. ​​Connecting ring; 291. Air inlet pipe; 292. Guide plate; 31. First limiting frame; 32. Sealing frame; 33. Second limiting frame. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] This utility model provides the following technical solution: Example 1 Please see Figure 1-7 This utility model provides a technical solution: a protective cover for a valve actuator, including a pneumatic actuator 1, a protective mechanism 2 arranged around the pneumatic actuator 1, a sealing mechanism 3 arranged around the protective mechanism 2, and a valve seat 4 fixedly connected to the bottom of the pneumatic actuator 1; The protective mechanism 2 includes a fixed base 21, which is fixedly connected to the top left side of the pneumatic actuator 1. A connecting block 22 is inserted into the fixed base 21. A protective cover body 23 is fixedly connected to the front side of the connecting block 22. The protective cover body 23 is slidably connected to the periphery of the pneumatic actuator 1. An insert block 24 is inserted into the fixed base 21 and passes through the interior of the connecting block 22. A protective frame 25 is fixedly connected to the top of the insert block 24. A fixing pin 26 is threadedly connected inside the protective frame 25. The fixing pin 26 is located inside the sealing mechanism 3. A fixing frame 27 is fixedly connected to the right side of the front surface of the protective cover body 23. A filter plate 28 is fixedly connected to the front side of the fixing frame 27. A connecting ring 29 is threadedly connected to the periphery of the front surface of the fixing frame 27. An air inlet pipe 291 is fixedly connected to the front side of the connecting ring 29. A guide plate 292 is fixedly connected to the inner side of the air inlet pipe 291.

[0018] The fixing pin 26 passes through the interior of the fixing seat 21, and the front side of the guide plate 292 is inclined downward, so as to facilitate the fixing of the connecting block 22, the fixing seat 21 and the protective frame 25 by means of the fixing pin 26.

[0019] The fixed base 21, the insert block 24, the protective frame 25 and the fixing pin 26 are provided in two sets and are symmetrically distributed on the left and right sides of the top of the pneumatic actuator 1, so that by setting two sets, the stability of the two sets of protective cover bodies 23 can be guaranteed.

[0020] Two sets of connecting block 22, protective cover body 23, fixing frame 27, filter plate 28, connecting ring 29, air inlet pipe 291 and guide plate 292 are provided and symmetrically distributed on the front and rear sides of the pneumatic actuator 1. The two sets of protective cover bodies 23 are slidably connected to the periphery of the pneumatic actuator 1 and are interlocked with each other. The front set of protective cover bodies 23 has a connecting groove inside. The connecting groove is circular, so that by setting two sets, the periphery of the pneumatic actuator 1 can be fully protected.

[0021] Example 2 Please see Figure 1-7 Furthermore, based on Embodiment 1, the sealing mechanism 3 further includes a first limiting frame 31, which is fixedly connected to the left side of the top of the cover. A sealing frame 32 is slidably connected inside the first limiting frame 31. The sealing frame 32 is slidably connected to the periphery of the protective cover body 23. A second limiting frame 33 is slidably connected to the periphery of the bottom of the sealing frame 32. The second limiting frame 33 is fixedly connected to the left side of the bottom of the protective cover body 23.

[0022] Two sets of first limiting frames 31 and second limiting frames 33 are provided, and are located on the top left and bottom left of the two sets of protective cover bodies 23 respectively. The top of the sealing frame 32 is internally threaded to the periphery of the fixing pin 26, so that the sealing frame 32 can be limited by the first limiting frame 31 and the second limiting frame 33.

[0023] The top periphery of the sealing frame 32 is slidably connected to the inside of the protective frame 25. The sealing frame 32 is located on the periphery of the two sets of protective cover bodies 23, so as to facilitate sealing the connection between the two sets of protective cover bodies 23 through the sealing frame 32.

[0024] In actual operation, when this device is used and the pneumatic actuator 1 used by the valve needs to be protected, first insert the connecting block 22 into the fixed base 21, so that the protective cover body 23 can be slidably connected to the periphery of the pneumatic actuator 1. There are two sets of connecting blocks 22 and protective cover bodies 23, which are located on the front and rear sides of the pneumatic actuator 1 respectively. When both sets of protective cover bodies 23 are located on the periphery of the pneumatic actuator 1, the sealing frame 32 is slidably connected to the first limit frame 31 and the second limit frame 33, so that the sealing frame 32 is tightly fitted to the periphery of the two sets of protective cover bodies 23, forming a double sealing barrier, effectively preventing water vapor, corrosive gases, etc. from entering the actuator, reducing the risk of parts corrosion and aging, and extending the service life of the pneumatic actuator 1. At this point, insert block 24 is inserted into the fixed base 21 and connecting block 22, so that the protective frame 25 is located on top of the fixed base 21 and slides to the top periphery of the sealing frame 32. Then, the fixing pin 26 can be threaded into the protective frame 25, fixed base 21 and sealing frame 32, which can ensure the stability between the fixed base 21, connecting block 22, protective cover body 23, protective frame 25 and pneumatic actuator 1. The two sets of protective cover bodies 23 slide and insert to wrap around the periphery of the pneumatic actuator 1. With the double symmetrical fixing of fixed base 21, insert block 24, protective frame 25 and fixing pin 26, the protective cover is stably installed to avoid loosening and displacement, and can completely isolate external impact and foreign object collision. At the same time, it is easy to disassemble, improves the convenience of operation, and does not require the use of other tools. When the pneumatic actuator 1 is in use, the filter plate 28 inside the fixed frame 27 can filter dust and impurities in the airflow entering the protective cover, preventing them from adhering to the actuator body and affecting operation, ensuring airflow inside the protective cover, and dissipating the heat generated by the pneumatic actuator 1 during operation. The forward-leaning design of the guide plate 292 can also prevent rainwater from flowing back in. At the same time, by removing the connecting ring 29 from the front side of the fixed frame 27, the air inlet pipe 291 can be removed, making it convenient for staff to regularly absorb and clean the dust on the filter plate 28, ensuring the air intake effect.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A protective cover for a valve actuator, comprising a pneumatic actuator (1), characterized in that: The pneumatic actuator (1) is provided with a protective mechanism (2) on its periphery, and a sealing mechanism (3) is provided on its periphery. A valve seat (4) is fixedly connected to the bottom of the pneumatic actuator (1). The protective mechanism (2) includes a fixed base (21), which is fixedly connected to the left side of the top of the pneumatic actuator (1). A connecting block (22) is inserted inside the fixed base (21). A protective cover body (23) is fixedly connected to the front side of the connecting block (22). The protective cover body (23) is slidably connected to the periphery of the pneumatic actuator (1). A plug (24) is inserted inside the fixed base (21). The plug (24) passes through the inside of the connecting block (22). A protective frame (25) is fixedly connected to the top of the plug (24). The protective frame (25) is internally threaded with a fixing pin (26), which is located inside the sealing mechanism (3). The protective cover body (23) is fixedly connected to a fixing frame (27) on the right side of the front surface. The fixing frame (27) is fixedly connected to a filter plate (28) on the front side of the inner side. The fixing frame (27) is threadedly connected to a connecting ring (29) on the outer periphery of the front surface. The connecting ring (29) is fixedly connected to an air inlet pipe (291) on the front side. The air inlet pipe (291) is fixedly connected to a guide plate (292) on the inner side.

2. The protective cover for a valve actuator according to claim 1, characterized in that: The fixing pin (26) passes through the inside of the fixing seat (21), and the front side of the guide plate (292) is inclined downward.

3. A protective cover for a valve actuator according to claim 1, characterized in that: The fixed base (21), the insert (24), the protective frame (25) and the fixing pin (26) are provided in two sets and are symmetrically distributed on the left and right sides of the top of the pneumatic actuator (1).

4. A protective cover for a valve actuator according to claim 1, characterized in that: The connecting block (22), protective cover body (23), fixing frame (27), filter plate (28), connecting ring (29), air inlet pipe (291) and guide plate (292) are provided in two sets and are symmetrically distributed on the front and rear sides of the pneumatic actuator (1). The two sets of protective cover bodies (23) are slidably connected to the periphery of the pneumatic actuator (1) and are interlocked with each other. The front set of protective cover bodies (23) has a connecting groove inside, and the connecting groove is circular.

5. A protective cover for a valve actuator according to claim 1, characterized in that: The sealing mechanism (3) includes a first limiting frame (31), which is fixedly connected to the left side of the top of the cover. A sealing frame (32) is slidably connected inside the first limiting frame (31). The sealing frame (32) is slidably connected to the periphery of the protective cover body (23). A second limiting frame (33) is slidably connected to the periphery of the bottom of the sealing frame (32). The second limiting frame (33) is fixedly connected to the left side of the bottom of the protective cover body (23).

6. A protective cover for a valve actuator according to claim 5, characterized in that: The first limiting frame (31) and the second limiting frame (33) are provided in two sets respectively, and are located on the top left and bottom left of the two sets of protective cover bodies (23) respectively. The top of the sealing frame (32) is internally threaded to the periphery of the fixing pin (26).

7. A protective cover for a valve actuator according to claim 5, characterized in that: The top periphery of the sealing frame (32) is slidably connected to the inside of the protective frame (25), and the sealing frame (32) is located on the periphery of the two sets of protective cover bodies (23).

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