Explosion-proof electric actuator

Abstract

The application discloses an explosion-proof electric actuator, which comprises an electric actuator body, a pressure relief device and a protection device, a detection assembly is arranged in the protection device, bolts for assembling the electric actuator body and the protection device are arranged in the detection assembly, and a light plate and a laser radio frequency device for monitoring the movement of the bolts are arranged on one side of the bolts, and particularly relates to the technical field of electric actuators. The explosion-proof electric actuator is provided with an inductor ring matched with the bolts, if the bolts of the actuator are loose, the displacement of the offset bolts is transmitted to the contact block through the inductor ring, the contact block contacts the transmission rod, the transmission rod rotates around the hinge and drives the contact plate to swing, the contact plate swings downward and presses the flat plate, the flat plate moves downward, the flat plate drives the light plate to move, the distance between the light plate and the laser radio frequency device is changed, the fastening condition of the bolts can be monitored, and the personnel are reminded to pay attention to the use safety of the actuator.

Description

Technical Field

[0001] This invention belongs to the technical field of electric actuators, and specifically relates to an explosion-proof electric actuator. Background Technology

[0002] An electric actuator is a drive device that provides linear or rotary motion. It utilizes some kind of driving energy and operates under the action of a control signal. Actuators use liquid, gas, electricity, or other energy sources and convert them into driving force through a motor, cylinder, or other device. There are three basic types: partial-turn, multi-turn, and linear-stroke. Basic actuators are used to drive valves to the fully open or fully closed position. Actuators used to control valves can precisely move the valve to any position.

[0003] Electric actuators contain position sensors, torque sensors, electrode protection devices, logic control devices, digital communication modules, and PID control modules, all enclosed in a compact housing. Since electrically powered devices and modules generate heat during operation, and non-electrical devices also generate heat during transmission, and the transmission process itself causes vibration, the actuators require high-quality housings. Furthermore, existing actuators lack detection and protection components for bolt movement during explosion-proofing, and bolts are crucial for maintaining the integrity of the actuator; therefore, there is room for improvement. Summary of the Invention

[0004] The purpose of this invention is to provide an explosion-proof electric actuator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an explosion-proof electric actuator, comprising an electric actuator body, a pressure relief device, and a protective device. The protective device is provided with a detection component, and the detection component is provided with a bolt for assembling the electric actuator body and the protective device. A light plate and a laser radio frequency device for monitoring the movement of the bolt are provided on one side of the bolt. The pressure relief device is provided with a pressure relief box controlled by a solenoid valve, and the solenoid valve is electrically connected to the laser radio frequency device.

[0006] Preferably, the detection assembly further includes a sensing device and a transmission assembly. The sensing device includes a sensing cover disposed on one side of the bolt, a sliding sleeve disposed on one side of the sensing cover, a sensing head disposed inside the sensing cover, and a sliding rod adapted to the sliding sleeve. The transmission assembly includes a contact plate and a transmission plate. The transmission assembly is hinged to the housing via a hinge. The end of the sliding rod away from the sensing head is movably connected to the transmission plate via a contact block. The housing is provided with a flat plate fixed to the light plate inside, and the contact plate is movably connected to the flat plate.

[0007] Preferably, the pressure relief box is fixedly connected to the electric actuator body via a connecting pipe, and the solenoid valve is connected to the connecting pipe.

[0008] Preferably, the interior of the box body is provided with a hinge hole for accommodating the hinge and a light plate groove for accommodating the light plate. The flat plate is fixed to the bottom plate by a spring. The box body and the cover body form a container for accommodating the flat plate, the contact plate, the light plate and the spring.

[0009] Preferably, a pressure relief hole is provided on one side of the pressure relief box, and a venturi tube is provided inside the pressure relief hole.

[0010] Preferably, a fixing sleeve is fitted on the outer side of the sensing cover, and the fixing sleeve is bonded to the bolt.

[0011] Preferably, a stabilizing ring is fixedly connected to the outer side of the sliding sleeve, and the stabilizing ring is adapted to the sliding rod.

[0012] Preferably, the protective device is provided with a support, and the box body is connected to the electric actuator body through the support.

[0013] Preferably, an induction coil is provided on the side of the induction cover near the bolt, and the induction coil is made of elastic rubber and fits in contact with the bolt.

[0014] Preferably, a valve is connected to one side of the electric actuator body, and the valve is fixedly connected to the electric actuator body by a reinforcing rib.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] (1) The explosion-proof electric actuator is equipped with an induction coil that fits with the bolt. If the bolt of the actuator is loose, the displacement generated by the offset bolt is transmitted to the contact block through the induction coil. After the contact block contacts the transmission rod, the transmission rod rotates around the hinge and drives the contact plate to swing. After the contact plate swings down, it presses the plate and causes the plate to move down. After the plate moves, it drives the light plate to move, which changes the distance between the light plate and the laser radio frequency device. This can monitor the tightness of the bolt and remind personnel to pay attention to the safety of using the actuator.

[0017] (2) The explosion-proof electric actuator is equipped with a pressure relief device and the laser radio frequency device is electrically connected to the solenoid valve. When the laser radio frequency device detects that the bolt is loose, since the bolt is loose, it is often caused by excessive pressure inside the actuator. The laser radio frequency device drives the solenoid valve to open the connecting pipe so that the air pressure inside the actuator is guided to the pressure relief box along the connecting pipe, thereby reducing the pressure inside the actuator and avoiding the risk of explosion.

[0018] (3) The explosion-proof electric actuator is equipped with a venturi tube. When gas is introduced into the pressure relief box, the speed at which the pressure relief box exhausts gas to the outside can be increased through the venturi tube, which effectively improves the pressure reduction efficiency of the actuator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the protective device of the present invention;

[0021] Figure 3 This is a schematic diagram of the disassembled structure of the detection component of the present invention;

[0022] Figure 4 This is a schematic diagram of the sensing device of the present invention;

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the pressure relief device of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the laser radio frequency device of the present invention;

[0025] In the diagram: 1. Electric actuator body; 11. Reinforcing rib; 2. Valve; 3. Pressure relief device; 31. Pressure relief box; 32. Solenoid valve; 33. Connecting pipe; 34. Pressure relief hole; 35. Venturi tube; 4. Protective device; 41. Support; 42. Flat plate; 43. Smooth plate; 44. Cover; 45. Spring; 5. Laser radio frequency device; 6. Detection component; 61. Bolt; 62. Fixing sleeve; 63. Stabilizing ring; 7. Sensing device; 71. Sliding sleeve; 72. Sensing cover; 73. Sensing ring; 74. Sliding rod; 75. Sensing head; 76. Contact block; 8. Conducting component; 81. Contact plate; 82. Hinge; 83. Conducting plate; 9. Box body; 91. Hinge hole; 92. Base plate; 93. Smooth plate groove. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-6As shown, the present invention provides the following technical solution: an explosion-proof electric actuator, comprising an electric actuator body 1, a pressure relief device 3, and a protective device 4. The protective device 4 is provided with a detection component 6, and the detection component 6 is provided with a bolt 61 for assembling the electric actuator body 1 and the protective device 4. A light plate 43 and a laser radio frequency device 5 are provided on one side of the bolt 61 to monitor its movement. The pressure relief device 3 is provided with a pressure relief box 31 controlled by a solenoid valve 32. The solenoid valve 32 is electrically connected to the laser radio frequency device 5. When the bolt 61 is loosened, the distance that the bolt 61 moves will be reflected on the light plate 43. After the light plate 43 moves, it changes its distance from the laser radio frequency device 5. The laser radio frequency device 5 issues an alarm on the one hand, and controls the solenoid valve 32 to work to discharge the gas inside the electric actuator body 1, thereby reducing the risk of explosion of the electric actuator body 1.

[0028] Furthermore, the detection component 6 also includes a sensing device 7 and a transmission component 8. The sensing device 7 includes a sensing cover 72 disposed on one side of the bolt 61, a sliding sleeve 71 disposed on one side of the sensing cover 72, a sensing head 75 disposed inside the sensing cover 72, and a sliding rod 74 adapted to the sliding sleeve 71. The transmission component 8 includes a contact plate 81 and a transmission plate 83. The transmission component 8 is hinged to the housing 9 via a hinge 82. The end of the sliding rod 74 away from the sensing head 75 is movably connected to the transmission plate 83 via a contact block 76. The housing 9 has a flat plate 42 fixedly connected to the light plate 43 inside, and the contact plate 81 is movably connected to the flat plate 42.

[0029] Example 1:

[0030] When bolt 61 loosens, the displacement of bolt 61 is sensed by the rubber induction coil 73. After sensing, the induction coil 73 increases the elastic potential energy through the rubber, increasing the amplitude and transferring the energy to the induction head 75. The induction head 75 then moves, driving the slide rod 74 and the contact block 76 to move. After the contact block 76 moves, it contacts the conduction plate 83, causing the conduction rod 83 to tilt and swing around the hinge 82. After swinging, it drives the contact plate 76 to swing. The contact plate 76 then swings downward and presses the plate 42, causing the plate 42 to move downward. Since the plate 42 is fixed to the box body by the spring 45, the spring 45 will further increase the swing energy, allowing the spring 45 to bounce the plate 42 up and drive the light plate 43 to move. After the light plate 43 moves, the distance between the light plate 43 and the laser radio frequency device 5 changes, which can monitor the tightness of bolt 61 and remind personnel to pay attention to the safety of using the actuator.

[0031] Furthermore, the pressure relief box 31 is fixedly connected to the electric actuator body 1 through the connecting pipe 33, and the solenoid valve 32 is connected to the connecting pipe 33. The solenoid valve 32 can open and close the passage of the connecting pipe 33.

[0032] Furthermore, the interior of the box body 9 is provided with a hinge hole 91 for accommodating the hinge 82 and a light plate groove 93 for accommodating the light plate 43. The flat plate 42 is fixedly connected to the bottom plate 92 by a spring 45. The box body 9 and the cover body 44 form a container for accommodating the flat plate 42, the contact plate 81, the light plate 43 and the spring 45.

[0033] Furthermore, a pressure relief hole 34 is provided on one side of the pressure relief box 31, and a venturi tube 35 is provided inside the pressure relief hole 34. The venturi tube 35 has the function of increasing the air flow rate.

[0034] Furthermore, a fixing sleeve 62 is fitted on the outer side of the sensor cover 72. The fixing sleeve 62 is bonded to the bolt 61. The fixing sleeve 62 can prevent the sensor device 7 from falling off, and the bonding also facilitates disassembly.

[0035] Furthermore, a stabilizing ring 63 is fixedly connected to the outer side of the sliding sleeve 71. The stabilizing ring 63 is adapted to the sliding rod 74. The stabilizing ring 63 can stabilize the movement of the sliding rod 74 and the contact block 76, and prevent the sliding sleeve 71 from being scratched or the conductive plate 83 from failing to sense the contact block 76 due to tilting of its movement.

[0036] Furthermore, the protective device 4 is provided with a support 41, and the box 9 is connected to the electric actuator body 1 through the support 41.

[0037] Furthermore, an induction coil 73 is provided on the side of the induction cover 72 near the bolt 61. The induction coil 73 is made of elastic rubber and fits into the bolt 61. The elastic rubber can increase the elastic potential energy when the bolt 61 moves after it is loosened.

[0038] Furthermore, a valve 2 is connected to one side of the electric actuator body 1, and the valve 2 is fixedly connected to the electric actuator body 1 by a reinforcing rib 11.

[0039] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof electric actuator, characterized in that: The device includes an electric actuator body (1), a pressure relief device (3), and a protective device (4). The protective device (4) is equipped with a detection component (6). The detection component (6) is equipped with a bolt (61) for assembling the electric actuator body (1) and the protective device (4). A light plate (43) and a laser radio frequency device (5) for monitoring the activity of the bolt (61) are provided on one side. The pressure relief device (3) is equipped with a pressure relief box (31) controlled by a solenoid valve (32). The solenoid valve (32) is electrically connected to the laser radio frequency device (5). The detection assembly (6) further includes a sensing device (7) and a transmission assembly (8). The sensing device (7) includes a sensing cover (72) disposed on one side of the bolt (61), a sliding sleeve (71) disposed on one side of the sensing cover (72), a sensing head (75) disposed inside the sensing cover (72), and a sliding rod (74) adapted to the sliding sleeve (71). The transmission assembly (8) includes a contact plate (81) and a transmission plate (83). The transmission assembly (8) is hinged to the box body (9) via a hinge (82). The end of the sliding rod (74) away from the sensing head (75) is movably connected to the transmission plate (83) via a contact block (76). The box body (9) is provided with a flat plate (42) fixedly connected to the light plate (43). The contact plate (81) is movably connected to the flat plate (42). The sensing cover (72) is provided with a sensing coil (73) on the side near the bolt (61). The sensing coil (73) is made of elastic rubber and fits into the bolt (61).

2. The explosion-proof electric actuator according to claim 1, characterized in that: The pressure relief box (31) is fixedly connected to the electric actuator body (1) through the connecting pipe (33), and the solenoid valve (32) is connected to the connecting pipe (33).

3. The explosion-proof electric actuator according to claim 2, characterized in that: The box body (9) has a hinge hole (91) for accommodating the hinge (82) and a light plate groove (93) for accommodating the light plate (43). The flat plate (42) is fixedly connected to the bottom plate (92) by a spring (45). The box body (9) and the cover body (44) form a container for accommodating the flat plate (42), the contact plate (81), the light plate (43) and the spring (45).

4. The explosion-proof electric actuator according to claim 3, characterized in that: The pressure relief box (31) is provided with a pressure relief hole (34) on one side, and a venturi tube (35) is provided inside the pressure relief hole (34).

5. The explosion-proof electric actuator according to claim 4, characterized in that: The outer side of the sensor cover (72) is fitted with a fixing sleeve (62), which is bonded to the bolt (61).

6. The explosion-proof electric actuator according to claim 5, characterized in that: A stabilizing ring (63) is fixedly connected to the outside of the sliding sleeve (71), and the stabilizing ring (63) is adapted to the sliding rod (74).

7. The explosion-proof electric actuator according to claim 6, characterized in that: The protective device (4) is provided with a support (41), and the box (9) is connected to the electric actuator body (1) through the support (41).

8. The explosion-proof electric actuator according to claim 7, characterized in that: A valve (2) is connected to one side of the electric actuator body (1), and the valve (2) is fixed to the electric actuator body (1) by a reinforcing rib (11).

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