Anti-explosion electric actuator

Abstract

The utility model relates to the technical field of electric actuators, and discloses an anti-explosion electric actuator which comprises an electric actuator body, anti-explosion assemblies are arranged on the top face and the bottom face of the electric actuator body, fixing assemblies are arranged on the left side and the right side of the electric actuator body, and a positioning assembly is arranged on the left side of the electric actuator body. And a pressure relief assembly is arranged on the top surface of the explosion-proof assembly. The fixed connection between the upper explosion-proof cover and the lower explosion-proof cover is completed through the design of the fixing assembly, the tedious disassembly process caused by fixing through bolts and nuts is avoided, the installation and fixing process is more convenient, meanwhile, through the design of the pressure relief assembly, pressure relief can be conducted at any time according to the change of internal air pressure, and the safety of the explosion-proof cover is improved. And meanwhile, it is guaranteed that the internal air pressure belongs to the normal range during disassembly and maintenance, and safety accidents cannot be caused.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator technology, specifically an explosion-proof electric actuator. Background Technology

[0002] Electric actuators are widely used actuators, typically used to control the opening and closing or regulation of valves, gates, plug valves, regulating valves, and other equipment. They can work safely and reliably in environments with flammable gases, steam, and liquids, effectively protecting life and property. Electric actuators usually adopt special materials and structural designs, featuring corrosion resistance and dust resistance, as well as high reliability, low noise, energy saving, and environmental protection. They are widely used in industries such as petroleum, chemical, pharmaceutical, natural gas, and metallurgy.

[0003] Traditional electric actuators are used in diverse environments. To prevent external impacts and the possibility of explosive components flying out under high loads, explosion-proof boxes are generally installed on the actuator to improve the overall safety factor. For convenient maintenance and repair, the explosion-proof box usually consists of a detachable upper and lower cover, each with bolts and nuts. The bolts and nuts are connected by personnel using tools, avoiding the inconvenience of subsequent maintenance in a one-piece design. However, connecting and disassembling the bolts and nuts requires personnel to use two appropriate wrenches, which is not very convenient. At the same time, the explosion-proof box is in a sealed environment, which cannot release the internal high pressure, thus leading to high-pressure explosions or safety hazards during disassembly and repair due to the high internal pressure. Improvements are needed. Therefore, we propose an explosion-proof electric actuator. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an explosion-proof electric actuator that solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] An explosion-proof electric actuator includes an electric actuator body, with explosion-proof components on the top and bottom surfaces of the electric actuator body, fixing components on the left and right sides of the electric actuator body, a positioning component on the left side of the electric actuator body, and a pressure relief component on the top surface of the explosion-proof components. The electric actuator body and the explosion-proof components, the electric actuator body and the fixing components, the electric actuator body and the positioning components, and the explosion-proof components and the pressure relief components are fixedly connected.

[0009] Preferably, the explosion-proof assembly includes an explosion-proof lower cover and an explosion-proof upper cover. The top surface of the electric actuator body is provided with an explosion-proof upper cover, and the bottom surface of the electric actuator body is provided with an explosion-proof lower cover. Threaded bosses are provided on the left and right sides of the explosion-proof lower cover and the explosion-proof upper cover. A pressure relief groove penetrating the interior is opened on the top surface of the explosion-proof upper cover, and an explosion-proof lower cover is provided on the bottom surface of the explosion-proof upper cover. The electric actuator body and the explosion-proof upper cover, the electric actuator body and the explosion-proof lower cover, and the explosion-proof lower cover and the explosion-proof upper cover are fixedly connected.

[0010] Preferably, the fixing assembly includes an explosion-proof fixing left cover, a sealing ring, and an explosion-proof fixing right cover. A sealing ring is provided on the left side of the explosion-proof lower cover and the explosion-proof upper cover. An explosion-proof fixing left cover is provided on the left side of the sealing ring. A thread is provided inside the right side of the explosion-proof fixing left cover. An explosion-proof fixing left cover is connected to the outer side of the threaded boss. A sealing ring is provided on the right side of the explosion-proof lower cover and the explosion-proof upper cover. An explosion-proof fixing right cover is provided to the right side of the sealing ring. A thread is provided inside the left side of the explosion-proof fixing right cover. An explosion-proof fixing right cover is connected to the outer side of the threaded boss. The explosion-proof lower cover and the explosion-proof upper cover are fixedly connected to the sealing ring, the sealing ring is fixedly connected to the explosion-proof left cover, and the sealing ring is fixedly connected to the explosion-proof right cover. The explosion-proof lower cover and the explosion-proof upper cover are threadedly connected to the explosion-proof left cover, and the explosion-proof lower cover and the explosion-proof upper cover are threadedly connected to the explosion-proof right cover.

[0011] Preferably, the explosion-proof fixed left cover and the explosion-proof fixed right cover have a through-hole in the middle, and the explosion-proof fixed left cover has a threaded hole on the left side that passes through the right side. An electric actuator body is provided inside the through-hole, and the electric actuator body is fixedly connected to the explosion-proof fixed left cover and to the explosion-proof fixed right cover.

[0012] Preferably, the positioning assembly includes a fixing screw and a positioning ring. The positioning ring is provided on the outer left side of the electric actuator body. Positioning rings are provided at the bottom of the explosion-proof upper cover and the top of the explosion-proof lower cover. A threaded hole penetrating through the interior is opened on the side of the positioning ring. An explosion-proof fixed left cover is provided on the left side of the positioning ring. A fixing screw is connected to the inner side of the threaded hole. The electric actuator body and the positioning ring, the explosion-proof lower cover and the positioning ring, the explosion-proof upper cover and the positioning ring, and the explosion-proof fixed left cover and the positioning ring are fixedly connected. The explosion-proof fixed left cover and the fixing screw, and the fixing screw and the positioning ring are threadedly connected.

[0013] Preferably, the pressure relief assembly includes a pressure relief support sleeve, pressure relief holes, a pressure relief cover, a pressure relief spring, and a pressure relief sealing plate. The pressure relief support sleeve is provided inside the pressure relief connecting groove, and a pressure relief cover is provided on the top surface of the pressure relief support sleeve. The pressure relief cover has pressure relief holes that are evenly distributed and penetrate the interior on its outer side. A pressure relief spring is provided on the top surface of the inner side of the pressure relief cover, and a pressure relief sealing plate is provided on the bottom surface of the pressure relief spring. The pressure relief spring and the pressure relief sealing plate are connected inside the pressure relief support sleeve. The explosion-proof top cover is fixedly connected to the pressure relief support sleeve, the pressure relief support sleeve and the pressure relief cover, the pressure relief cover and the pressure relief spring, and the pressure relief spring and the pressure relief sealing plate. The pressure relief support sleeve and the pressure relief spring, and the pressure relief support sleeve and the pressure relief sealing plate are slidably connected.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] An explosion-proof electric actuator is provided, which has the following advantages:

[0017] This utility model achieves a fixed connection between the upper and lower explosion-proof covers through the design of the fixing components, avoiding the cumbersome disassembly process caused by using bolts and nuts, making the installation and fixing process more convenient. At the same time, the design of the pressure relief component allows for pressure relief at any time according to changes in internal air pressure, preventing explosions caused by excessive air pressure, and ensuring that the internal air pressure remains within the normal range during disassembly and maintenance to avoid safety accidents. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0020] Figure 3 This is a front sectional view of the overall structure of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model from the left side.

[0022] In the diagram: 1. Electric actuator body; 2. Explosion-proof fixed left cover; 3. Fixing screw; 4. Sealing ring; 5. Explosion-proof lower cover; 6. Explosion-proof fixed right cover; 7. Explosion-proof lower cover; 8. Pressure relief support sleeve; 9. Pressure relief hole; 10. Pressure relief cover; 11. Threaded hole; 12. Positioning ring; 13. Threaded boss; 14. Pressure relief connecting groove; 15. Pressure relief spring; 16. Pressure relief sealing plate; 17. Connecting hole. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution;

[0025] An explosion-proof electric actuator includes an electric actuator body 1, with explosion-proof components on the top and bottom surfaces of the electric actuator body 1, fixing components on the left and right sides of the electric actuator body 1, a positioning component on the left side of the electric actuator body 1, and a pressure relief component on the top surface of the explosion-proof components. The electric actuator body 1 is fixedly connected to the explosion-proof components, to the fixing components, to the positioning components, and to the pressure relief components.

[0026] The explosion-proof assembly includes an explosion-proof lower cover 5 and an explosion-proof upper cover 7. The top surface of the electric actuator body 1 is provided with the explosion-proof upper cover 7, and the bottom surface of the electric actuator body 1 is provided with the explosion-proof lower cover 5. The left and right sides of the explosion-proof lower cover 5 and the explosion-proof upper cover 7 are provided with threaded bosses 13. The top surface of the explosion-proof upper cover 7 is provided with a pressure relief groove 14 that penetrates the interior, and the bottom surface of the explosion-proof upper cover 7 is provided with the explosion-proof lower cover 5. The electric actuator body 1 and the explosion-proof upper cover 7, the electric actuator body 1 and the explosion-proof lower cover 5, and the explosion-proof lower cover 5 and the explosion-proof upper cover 7 are fixedly connected.

[0027] The fixing assembly includes an explosion-proof fixing left cover 2, a sealing ring 4, and an explosion-proof fixing right cover 6. The explosion-proof lower cover 5 and the explosion-proof upper cover 7 have a sealing ring 4 on their left sides. The explosion-proof fixing left cover 2 is located to the left of the sealing ring 4. A thread is formed inside the right side of the explosion-proof fixing left cover 2. The outer side of the threaded boss 13 is connected to the explosion-proof fixing left cover 2. The explosion-proof lower cover 5 and the explosion-proof upper cover 7 have a sealing ring 4 on their right sides. The explosion-proof fixing right cover 6 is located to the right of the sealing ring 4. A thread is formed inside the left side of the explosion-proof fixing right cover 6. The outer side of the threaded boss 13 is connected to the explosion-proof fixed right cover 6. The explosion-proof lower cover 5 and explosion-proof upper cover 7 are fixedly connected to the sealing ring 4, the sealing ring 4 is fixedly connected to the explosion-proof fixed left cover 2, and the sealing ring 4 is fixedly connected to the explosion-proof fixed right cover 6. The explosion-proof lower cover 5 and explosion-proof upper cover 7 are threadedly connected to the explosion-proof fixed left cover 2, and the explosion-proof lower cover 5 and explosion-proof upper cover 7 are threadedly connected to the explosion-proof fixed right cover 6. The fixed installation of the explosion-proof box is completed by the cooperation between the explosion-proof fixed left cover 2 and the explosion-proof fixed right cover 6.

[0028] The explosion-proof fixed left cover 2 and the explosion-proof fixed right cover 6 have a through-hole 17 in the middle. The explosion-proof fixed left cover 2 has a through-hole 11 on the left side. The electric actuator body 1 is located inside the through-hole 17. The electric actuator body 1 is fixedly connected to the explosion-proof fixed left cover 2 and to the explosion-proof fixed right cover 6.

[0029] The positioning assembly includes a fixing screw 3 and a positioning ring 12. The positioning ring 12 is located on the outer left side of the electric actuator body 1. The bottom of the explosion-proof upper cover 7 and the top of the explosion-proof lower cover 5 are also equipped with positioning rings 12. The side of the positioning ring 12 has a threaded hole 11 that penetrates the interior. The left side of the positioning ring 12 is equipped with an explosion-proof fixed left cover 2. The fixing screw 3 is connected to the inner side of the threaded hole 11. The electric actuator body 1 and the positioning ring 12, the explosion-proof lower cover 5 and the positioning ring 12, the explosion-proof upper cover 7 and the positioning ring 12, and the explosion-proof fixed left cover 2 and the positioning ring 12 are fixedly connected. The explosion-proof fixed left cover 2 and the fixing screw 3, and the fixing screw 3 and the positioning ring 12 are threadedly connected.

[0030] The pressure relief assembly includes a pressure relief support sleeve 8, pressure relief holes 9, a pressure relief cover 10, a pressure relief spring 15, and a pressure relief sealing plate 16. The pressure relief support sleeve 8 is located inside the pressure relief connecting groove 14. The pressure relief cover 10 is located on the top surface of the pressure relief support sleeve 8. The pressure relief cover 10 has evenly distributed pressure relief holes 9 penetrating its interior on its outer side. The pressure relief spring 15 is located on the top surface inside the pressure relief cover 10, and the pressure relief sealing plate 16 is located on the bottom surface of the pressure relief spring 15. The pressure relief spring 15 is connected to the pressure relief sealing plate 16 on the inner side of the pressure relief support sleeve 8. The sealing plate 16, the explosion-proof top cover 7 and the pressure relief support sleeve 8, the pressure relief support sleeve 8 and the pressure relief cover 10, the pressure relief cover 10 and the pressure relief spring 15, and the pressure relief spring 15 and the pressure relief sealing plate 16 are fixedly connected. The pressure relief support sleeve 8 and the pressure relief spring 15, and the pressure relief support sleeve 8 and the pressure relief sealing plate 16 are slidably connected. The internal pressure is relieved by the pressure relief components, which prevents the internal pressure from being too high and causing an explosion, while avoiding the safety hazards caused by the internal high pressure during disassembly and maintenance.

[0031] Working principle: When this utility model is needed, the explosion-proof lower cover 5 and the explosion-proof upper cover 7 are fixed on the outside of the electric actuator body 1. Sealing rings 4 are installed on the left and right sides of the explosion-proof lower cover 5 and the explosion-proof upper cover 7. The explosion-proof lower cover 5 and the explosion-proof upper cover 7 are fixed to the electric actuator body 1 by threaded engagement between the threaded boss 13 and the explosion-proof fixed left cover 2 and the explosion-proof fixed right cover 6. The positioning ring 12 is tightly attached to the outside of the electric actuator body 1, and the fixing screws 3 fix the explosion-proof fixed left cover 2 and the positioning ring 12, so that the electric actuator body 1 is positioned and fixed inside the explosion-proof lower cover 5 and the explosion-proof upper cover 7. The internal pressure is relieved by the pressure relief component connected to the top of the pressure relief connecting groove 14. When the internal pressure increases, the pressure relief spring 15 is compressed, causing the pressure relief sealing plate 16 to move upward and relieve pressure through the pressure relief hole 9. After the pressure relief is completed, the pressure relief spring 15 returns the pressure relief sealing plate 16 to its original position.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof electric actuator, comprising an electric actuator body (1), characterized in that: The top and bottom surfaces of the electric actuator body (1) are provided with explosion-proof components. The left and right sides of the electric actuator body (1) are provided with fixing components. The left side of the electric actuator body (1) is provided with a positioning component. The top surface of the explosion-proof component is provided with a pressure relief component. The electric actuator body (1) and the explosion-proof component, the electric actuator body (1) and the fixing component, the electric actuator body (1) and the positioning component, and the explosion-proof component and the pressure relief component are fixedly connected.

2. The explosion-proof electric actuator according to claim 1, characterized in that: The explosion-proof assembly includes an explosion-proof lower cover (5) and an explosion-proof upper cover (7). The top surface of the electric actuator body (1) is provided with the explosion-proof upper cover (7), and the bottom surface of the electric actuator body (1) is provided with the explosion-proof lower cover (5). The left and right sides of the explosion-proof lower cover (5) and the explosion-proof upper cover (7) are provided with threaded bosses (13). The top surface of the explosion-proof upper cover (7) is provided with a pressure relief groove (14) that penetrates the interior. The bottom surface of the explosion-proof upper cover (7) is provided with the explosion-proof lower cover (5). The electric actuator body (1) and the explosion-proof upper cover (7), the electric actuator body (1) and the explosion-proof lower cover (5), and the explosion-proof lower cover (5) and the explosion-proof upper cover (7) are fixedly connected.

3. The explosion-proof electric actuator according to claim 2, characterized in that: The fixing assembly includes an explosion-proof fixing left cover (2), a sealing ring (4), and an explosion-proof fixing right cover (6). The explosion-proof lower cover (5) and the explosion-proof upper cover (7) are provided with a sealing ring (4) on their left sides. The explosion-proof fixing left cover (2) is provided on the left side of the sealing ring (4). The explosion-proof fixing left cover (2) has a thread inside on its right side. The explosion-proof fixing left cover (2) is connected to the outside of the threaded boss (13). The explosion-proof lower cover (5) and the explosion-proof upper cover (7) are provided with a sealing ring (4) on their right sides. The explosion-proof fixing right cover is provided on the right side of the sealing ring (4). (6) The explosion-proof fixed right cover (6) has a threaded opening on the left side of the inside. The explosion-proof fixed right cover (6) is connected to the outside of the threaded boss (13). The explosion-proof lower cover (5) and explosion-proof upper cover (7) are fixedly connected to the sealing ring (4), the sealing ring (4) is fixedly connected to the explosion-proof fixed left cover (2), and the sealing ring (4) is fixedly connected to the explosion-proof right cover (6). The explosion-proof lower cover (5) and explosion-proof upper cover (7) are fixedly connected to the explosion-proof fixed left cover (2), and the explosion-proof lower cover (5) and explosion-proof upper cover (7) are fixedly connected to the explosion-proof right cover (6).

4. The explosion-proof electric actuator according to claim 3, characterized in that: The explosion-proof fixed left cover (2) and the explosion-proof fixed right cover (6) are provided with a through-hole (17) in the middle. The explosion-proof fixed left cover (2) is provided with a through-hole (11) on the left side. The electric actuator body (1) is provided inside the through-hole (17). The electric actuator body (1) is fixedly connected to the explosion-proof fixed left cover (2) and to the explosion-proof fixed right cover (6).

5. The explosion-proof electric actuator according to claim 4, characterized in that: The positioning assembly includes a fixing screw (3) and a positioning ring (12). The positioning ring (12) is provided on the left side of the electric actuator body (1). The bottom of the explosion-proof upper cover (7) and the top of the explosion-proof lower cover (5) are provided with positioning rings (12). The side of the positioning ring (12) is provided with a threaded hole (11) that penetrates the interior. The left side of the positioning ring (12) is provided with an explosion-proof fixed left cover (2). The inner side of the threaded hole (11) is connected to the fixing screw (3). The electric actuator body (1) and the positioning ring (12), the explosion-proof lower cover (5) and the positioning ring (12), the explosion-proof upper cover (7) and the positioning ring (12), and the explosion-proof fixed left cover (2) and the positioning ring (12) are fixedly connected. The explosion-proof fixed left cover (2) and the fixing screw (3) are threadedly connected, and the fixing screw (3) and the positioning ring (12) are threadedly connected.

6. The explosion-proof electric actuator according to claim 2, characterized in that: The pressure relief assembly includes a pressure relief support sleeve (8), pressure relief holes (9), a pressure relief cover (10), a pressure relief spring (15), and a pressure relief sealing plate (16). The pressure relief support sleeve (8) is provided inside the pressure relief connecting groove (14). The pressure relief cover (10) is provided on the top surface of the pressure relief support sleeve (8). The pressure relief cover (10) has pressure relief holes (9) evenly distributed and penetrating inside on the outer side of the pressure relief cover (10). The pressure relief spring (15) is provided on the top surface inside the pressure relief cover (10). The pressure relief spring (15) is provided on the bottom surface of the pressure relief spring (15). The sealing plate (16) has a pressure relief spring (15) and a pressure relief sealing plate (16) connected to the inner side of the pressure relief support sleeve (8). The explosion-proof cover (7) is fixedly connected to the pressure relief support sleeve (8), the pressure relief support sleeve (8) is fixedly connected to the pressure relief cover (10), the pressure relief cover (10) is fixedly connected to the pressure relief spring (15), and the pressure relief spring (15) is fixedly connected to the pressure relief sealing plate (16). The pressure relief support sleeve (8) is fixedly connected to the pressure relief spring (15), and the pressure relief support sleeve (8) is fixedly connected to the pressure relief sealing plate (16).

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