A modular control box based on explosion-proof and increased safety dual explosion-proof technologies

Abstract

This utility model relates to the technical field of modular control boxes, and in particular to a modular control box based on explosion-proof and enhanced safety dual explosion-proof technology. It improves the convenience of inspection and maintenance of the circuit board and PLC module, enhances the safety of the circuit board and PLC module, and improves the explosion-proof and enhanced safety effect. It includes an explosion-proof housing, a circuit board, and a PLC module. The PLC module is mounted on the circuit board, which is installed inside the explosion-proof housing. It also includes a locking mechanism, an explosion-proof door, a support shaft, and a connector. The explosion-proof housing has an opening at its front end, and the explosion-proof door is installed at the opening. The support shaft is installed on the outer wall of the explosion-proof housing, and the connector is rotatably mounted on the support shaft. The side of the explosion-proof door is connected to the connector. A locking mechanism is provided between the explosion-proof housing and the explosion-proof door to lock the rotation of the explosion-proof door.

Description

Technical Field

[0001] This utility model relates to the technical field of modular control boxes, and in particular to a modular control box based on explosion-proof and increased safety dual explosion-proof technology. Background Technology

[0002] In many industrial sectors such as petroleum, chemical, coal mining, and natural gas extraction, flammable and explosive gases, vapors, or dust are commonly present in the production environment. Once these flammable and explosive substances mix with air and reach a certain concentration range, they can cause an explosion when exposed to an ignition source, posing a significant threat to personnel safety, equipment, and the entire production process.

[0003] Currently, among existing explosion-proof control boxes, such as the patent with publication number CN215898321U, this utility model discloses an explosion-proof heat dissipation control box, belonging to the field of control box technology. This explosion-proof heat dissipation control box includes an explosion-proof housing and control elements. The inner wall of the explosion-proof housing is flat, and the heating surface of the control elements is tightly fitted to the inner wall of the explosion-proof housing. Multiple heat dissipation fins are provided on the outer side of the explosion-proof housing, and multiple inlet device connecting joints are provided at the bottom of the explosion-proof housing.

[0004] However, the opening and closing of the control box is inconvenient, which increases the complexity of personnel inspection and maintenance of the internal electrical equipment. In addition, the control box has poor safety performance, which reduces the safety of use. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a modular control box based on dual explosion-proof technology that improves the convenience of inspection and maintenance of circuit boards and PLC modules, enhances the safety of use of circuit boards and PLC modules, and improves the explosion-proof and enhanced safety effects.

[0006] This utility model discloses a modular control box based on explosion-proof and increased safety dual explosion-proof technology, including an explosion-proof housing, a circuit board, and a PLC module. The PLC module is mounted on the circuit board, which is installed inside the explosion-proof housing. It also includes a locking mechanism, an explosion-proof door, a support shaft, and a connector. The explosion-proof housing has an opening at its front end, and the explosion-proof door is installed at the opening. The support shaft is installed on the outer wall of the explosion-proof housing, and the connector is rotatably mounted on the support shaft. The side of the explosion-proof door is connected to the connector. A locking mechanism is provided between the explosion-proof housing and the explosion-proof door to lock the rotation of the explosion-proof door. By rotating the explosion-proof door, it is opened or closed via the guide support of the connector and the support shaft, improving the convenience of maintenance and repair of the circuit board and PLC module. By closing the explosion-proof door, the explosion-proof housing and the explosion-proof door cooperate to provide explosion protection, improving the safety of the circuit board and PLC module. By using the locking mechanism to lock the rotation of the explosion-proof door, the closing reliability of the explosion-proof door is improved, thus enhancing the explosion-proof and increased safety effect.

[0007] Preferably, the locking mechanism includes a pushing mechanism, slots, kits, pins, telescopic rods, and springs. Multiple sets of slots are installed on the inner wall of the explosion-proof enclosure, and multiple sets of kits are installed on the outer wall of the explosion-proof door. Multiple sets of pins slide through the multiple sets of kits, and the front ends of the multiple sets of pins are inserted into the multiple sets of slots. Multiple sets of telescopic rods are respectively disposed between the multiple sets of kits and pins. Multiple sets of springs are respectively fitted onto the multiple sets of telescopic rods. The pushing mechanism is disposed on the explosion-proof door and is used to push the multiple sets of pins. When the explosion-proof door is closed at the opening of the explosion-proof enclosure, the pushing mechanism pushes the multiple sets of pins, causing the multiple sets of pins to be inserted into the multiple sets of slots through the sliding guides of the multiple sets of kits. Thus, the multiple sets of pins and the multiple sets of slots cooperate to lock the explosion-proof door from all sides, improving the safety and reliability of the explosion-proof door in use.

[0008] Preferably, the pushing mechanism includes a disc, inclined blocks, a motor, and support wheels. Multiple sets of support wheels are respectively installed at the rear ends of multiple sets of pins. The disc is rotatably mounted on the outer wall of the explosion-proof door. Multiple sets of inclined blocks are circumferentially mounted on the outer wall of the disc, and the multiple sets of inclined blocks are in contact with the multiple sets of support wheels. The motor is mounted on the outer wall of the explosion-proof door, and the output end of the motor is concentrically connected to the disc. The motor drives the disc to rotate, causing the disc to move the multiple sets of inclined blocks circumferentially. After the multiple sets of inclined blocks move circumferentially, they push the multiple sets of support wheels to move through the inclined blocks, causing the multiple sets of support wheels to drive the multiple sets of pins to slide into the multiple sets of slots. When it is necessary to open the explosion-proof door, the motor drives the disc to rotate in the opposite direction, so that the multiple sets of pins slide in the opposite direction and separate from the multiple sets of slots through the elastic support of multiple sets of springs.

[0009] Preferably, it also includes a cover, which is installed on the outer wall of the explosion-proof door and is equipped with an operating switch; this improves the protection effect of the motor and enhances the ease of installation of the operating switch.

[0010] Preferably, it also includes a high-temperature resistant silicone sealing strip, which is installed on the outer wall of the explosion-proof door to improve the sealing performance between the explosion-proof door and the explosion-proof shell after the explosion-proof door is closed.

[0011] Preferably, the explosion-proof enclosure adopts a cast iron explosion-proof cavity conforming to GB3836.2 standard to ensure the explosion-proof safety of the control box.

[0012] Preferably, the circuit board and PLC module adopt an increased safety design with an insulation class ≥ IP65; the increased safety design avoids internal fault ignition and improves the dual protection effect of explosion-proof and increased safety.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by rotating the explosion-proof door, the explosion-proof door can be opened or closed through the guide support of the connecting parts and the support shaft, which improves the convenience of inspection and maintenance of the circuit board and PLC module; by closing the explosion-proof door, the explosion-proof shell and the explosion-proof door cooperate to perform explosion-proof, which improves the safety of the circuit board and PLC module; by using a locking mechanism to lock the rotation of the explosion-proof door, the closing reliability of the explosion-proof door is improved, and the explosion-proof safety effect is enhanced. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a partial isometric structural diagram of the connection between the circuit board and the PLC module, etc.

[0016] Figure 3 This is a partial isometric structural diagram of the connection between the explosion-proof enclosure and the slot, etc.

[0017] Figure 4 This is a partial isometric structural diagram of the connection between the disk and the inclined block, etc.

[0018] Figure 5 This is an isometric structural diagram of the connection between the explosion-proof door and the motor, etc.

[0019] Figure 6 This is a partial isometric structural diagram of the connection between the explosion-proof door and the high-temperature resistant silicone sealing strip.

[0020] The following are labeled in the attached diagram: 1. Explosion-proof enclosure; 2. Explosion-proof door; 3. Support shaft; 4. Connector; 5. Circuit board; 6. PLC module; 7. Slot; 8. Kit; 9. Pin; 10. Telescopic rod; 11. Spring; 12. Disc; 13. Inclined block; 14. Motor; 15. Support wheel; 16. Cover; 17. High-temperature resistant silicone sealing strip. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0022] Example 1

[0023] like Figures 1 to 6As shown, this utility model discloses a modular control box based on explosion-proof and increased safety dual explosion-proof technology, including an explosion-proof housing 1, a circuit board 5, and a PLC module 6. The PLC module 6 is mounted on the circuit board 5, and the circuit board 5 is installed inside the explosion-proof housing 1. It also includes a locking mechanism, an explosion-proof door 2, a support shaft 3, and a connector 4. The explosion-proof housing 1 has an opening at its front end, and the explosion-proof door 2 is installed at the opening of the explosion-proof housing 1. The support shaft 3 is installed on the outer wall of the explosion-proof housing 1, and the connector 4 is rotatably mounted on the support shaft 3. The side of the explosion-proof door 2 is connected to the connector 4. A locking mechanism is provided between the explosion-proof housing 1 and the explosion-proof door 2 to lock the rotation of the explosion-proof door 2.

[0024] like Figure 4 As shown, the locking mechanism includes a pushing mechanism, slots 7, kits 8, pins 9, telescopic rods 10, and springs 11. Multiple sets of slots 7 are installed on the inner side wall of the explosion-proof housing 1, multiple sets of kits 8 are installed on the outer side wall of the explosion-proof door 2, multiple sets of pins 9 slide through the multiple sets of kits 8, and the front ends of the multiple sets of pins 9 are inserted into the multiple sets of slots 7. Multiple sets of telescopic rods 10 are respectively arranged between the multiple sets of kits 8 and pins 9, and multiple sets of springs 11 are respectively fitted onto the multiple sets of telescopic rods 10. The pushing mechanism is arranged on the explosion-proof door 2 and is used to push the multiple sets of pins 9.

[0025] In this embodiment, by rotating the explosion-proof door 2, the explosion-proof door 2 is opened or closed via the guide support of the connecting piece 4 and the support shaft 3, which improves the convenience of inspection and maintenance of the circuit board 5 and the PLC module 6. By closing the explosion-proof door 2, the explosion-proof housing 1 and the explosion-proof door 2 cooperate to perform explosion-proof, which improves the safety of the circuit board 5 and the PLC module 6. By using a locking mechanism to lock the rotation of the explosion-proof door 2, the closing reliability of the explosion-proof door 2 is improved, and the explosion-proof safety effect is enhanced.

[0026] Example 2

[0027] Based on Example 1, such as Figure 4 and Figure 5 As shown, this utility model discloses a modular control box based on explosion-proof and increased safety dual explosion-proof technology. The pushing mechanism includes a disc 12, inclined blocks 13, a motor 14, and support wheels 15. Multiple sets of support wheels 15 are respectively installed at the rear ends of multiple sets of pins 9. The disc 12 is rotatably installed on the outer wall of the explosion-proof door 2. Multiple sets of inclined blocks 13 are circumferentially installed on the outer wall of the disc 12, and the multiple sets of inclined blocks 13 are in contact with the multiple sets of support wheels 15. The motor 14 is installed on the outer wall of the explosion-proof door 2, and the output end of the motor 14 is concentrically connected to the disc 12.

[0028] like Figure 1 As shown, it also includes a cover 16, which is installed on the outer wall of the explosion-proof door 2, and an operating switch is provided on the cover 16.

[0029] like Figure 6 As shown, it also includes a high-temperature resistant silicone sealing strip 17, which is installed on the outer wall of the explosion-proof door 2;

[0030] like Figure 1 As shown, the explosion-proof enclosure 1 adopts a cast iron explosion-proof cavity conforming to GB3836.2 standard;

[0031] like Figure 2 As shown, the circuit board 5 and PLC module 6 adopt an increased safety design with an insulation class ≥ IP65;

[0032] In this embodiment, when the explosion-proof door 2 is closed at the opening of the explosion-proof housing 1, the pushing mechanism pushes multiple sets of pins 9, causing them to slide into multiple sets of slots 7 through the sliding guides of multiple sets of kits 8. This allows the multiple sets of pins 9 and slots 7 to lock the explosion-proof door 2 from all sides, improving the safety and reliability of the explosion-proof door 2. The motor 14 drives the disc 12 to rotate, causing the disc 12 to move multiple sets of inclined blocks 13 circumferentially. After the inclined blocks 13 move circumferentially, they push multiple sets of support wheels 15 to move, causing the multiple sets of support wheels 15 to slide the multiple sets of pins 9 into the multiple sets of slots 7. When it is necessary to open the explosion-proof door 2, the motor 14 drives the disc 12 to rotate in the opposite direction, causing the multiple sets of pins 9 to slide in the opposite direction and separate from the multiple sets of slots 7 through the elastic support of multiple sets of springs 11.

[0033] This utility model discloses a modular control box based on explosion-proof and increased safety dual explosion-proof technology. When in operation, the explosion-proof door 2 is rotated to open or close via the guide support of the connecting piece 4 and the support shaft 3. When the explosion-proof door 2 is closed, the explosion-proof housing 1 and the explosion-proof door 2 cooperate to provide explosion protection. The rotation of the explosion-proof door 2 is locked by a locking mechanism, thereby improving the closing reliability of the explosion-proof door 2.

[0034] This utility model discloses a modular control box based on explosion-proof and increased safety dual explosion-proof technology. The control switch is connected to the motor 14 through the controller, which facilitates the control of the motor 14's operation. The PLC module 6 adopts a modular design. The circuit board 5, PLC module 6, and motor 14 of this utility model's modular control box based on explosion-proof and increased safety dual explosion-proof technology are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A modular control box based on explosion-proof and increased safety dual explosion-proof technology, comprising an explosion-proof housing (1), a circuit board (5), and a PLC module (6), wherein the PLC module (6) is mounted on the circuit board (5), and the circuit board (5) is installed inside the explosion-proof housing (1); characterized in that, It also includes a locking mechanism, an explosion-proof door (2), a support shaft (3), and a connector (4). The explosion-proof housing (1) has an opening at its front end. The explosion-proof door (2) is installed at the opening of the explosion-proof housing (1). The support shaft (3) is installed on the outer wall of the explosion-proof housing (1). The connector (4) is rotatably installed on the support shaft (3). The side of the explosion-proof door (2) is connected to the connector (4). A locking mechanism is provided between the explosion-proof housing (1) and the explosion-proof door (2). The locking mechanism is used to lock the rotation of the explosion-proof door (2).

2. The modular control box based on explosion-proof and increased safety dual explosion-proof technology as described in claim 1, characterized in that, The locking mechanism includes a pushing mechanism, slots (7), kits (8), pins (9), telescopic rods (10), and springs (11). Multiple slots (7) are installed on the inner side wall of the explosion-proof enclosure (1), multiple kits (8) are installed on the outer side wall of the explosion-proof door (2), multiple pins (9) slide through the multiple kits (8), and the front ends of the multiple pins (9) are inserted into the multiple slots (7). Multiple telescopic rods (10) are respectively set between the multiple kits (8) and the pins (9). Multiple springs (11) are respectively fitted on the multiple telescopic rods (10). The pushing mechanism is set on the explosion-proof door (2) and is used to push the multiple pins (9).

3. A modular control box based on explosion-proof and increased safety dual explosion-proof technology as described in claim 2, characterized in that, The driving mechanism includes a disc (12), inclined blocks (13), a motor (14), and support wheels (15). Multiple sets of support wheels (15) are respectively installed at the rear ends of multiple sets of pins (9). The disc (12) is rotatably installed on the outer wall of the explosion-proof door (2). Multiple sets of inclined blocks (13) are circumferentially installed on the outer wall of the disc (12), and multiple sets of inclined blocks (13) are in contact with multiple sets of support wheels (15). The motor (14) is installed on the outer wall of the explosion-proof door (2), and the output end of the motor (14) is concentrically connected to the disc (12).

4. A modular control box based on explosion-proof and increased safety dual explosion-proof technology as described in claim 1, characterized in that, It also includes a cover (16), which is installed on the outer wall of the explosion-proof door (2), and an operating switch is provided on the cover (16).

5. A modular control box based on explosion-proof and increased safety dual explosion-proof technology as described in claim 1, characterized in that, It also includes a high-temperature resistant silicone sealing strip (17), which is installed on the outer wall of the explosion-proof door (2).

6. A modular control box based on explosion-proof and increased safety dual explosion-proof technology as described in claim 1, characterized in that, The explosion-proof enclosure (1) adopts a cast iron explosion-proof cavity in accordance with GB3836.2 standard.

7. A modular control box based on explosion-proof and increased safety dual explosion-proof technology as described in claim 1, characterized in that, The circuit board (5) and PLC module (6) adopt an increased safety design with an insulation level ≥ IP65.

Images