A mine explosion-proof permanent magnet vacuum feeder switch

Abstract

This utility model discloses a mine-use explosion-proof permanent magnet vacuum feeder switch, relating to the technical field of mine-use explosion-proof permanent magnet vacuum feeder switches. It includes a main body shell and an explosion-proof door. The main body shell is hinged to one side of the explosion-proof door. An operating structure is bolted to the inside of the explosion-proof door. A connecting frame is fixedly connected to the outside of the explosion-proof door, and a fixing frame is provided on the outside of the connecting frame. Explosion-proof glass is provided between the fixing frame and the connecting frame. A movable groove is provided at the lower part of the connecting frame. This utility model, through the arrangement of the connecting frame, fixing frame, explosion-proof glass, and protective plate, achieves the effect of isolating and protecting the display screen and control buttons of the operating structure. The coordinated arrangement of the fixing rod, movable rod, and movable groove allows for convenient pressing of the control buttons during use, thus achieving the purpose of isolating the control buttons and protecting them.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof permanent magnet vacuum feeder switch for mining, specifically an explosion-proof permanent magnet vacuum feeder switch for mining. Background Technology

[0002] Mining explosion-proof vacuum feeder switches are suitable for use in coal mines and other environments where the surrounding medium contains explosive gases (methane mixtures). In AC 50Hz lines with voltages up to 1140V, they can be used as main switches, branch switches, or feeder switches for mining explosion-proof mobile substations. They can also be used for infrequent starting of large-capacity motors and have overload, short-circuit, undervoltage, and leakage protection functions.

[0003] Currently, existing explosion-proof permanent magnet vacuum feeder switches for mining are typically used for controlling circuits within mines. During use, the control buttons of these switches are often exposed, making them susceptible to corrosion from coal dust and moisture, leading to contact oxidation. Furthermore, they lack anti-accidental activation mechanisms, making them prone to accidental triggering during underground vibrations or impacts. This results in insufficient protection for the control buttons. Additionally, the casing of these switches is constantly exposed to the humid and corrosive underground environment, making them susceptible to damage from chemical corrosion or mechanical impacts. The internal electrical components use fixed connections, requiring the complete disassembly of all components and wiring when replacing the casing. This is not only cumbersome but also prone to loosening of terminals and damage to insulation during disassembly and reassembly, severely impacting the reliability of equipment reuse and making replacement of damaged casings inconvenient. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a mine explosion-proof permanent magnet vacuum power supply switch, which solves the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: It includes a main shell and an explosion-proof door. The main shell is hinged to one side of the explosion-proof door. An operating structure is bolted to the inside of the explosion-proof door. A connecting frame is fixedly connected to the outside of the explosion-proof door. A fixed frame is provided on the outside of the connecting frame. Explosion-proof glass is provided between the fixed frame and the connecting frame. A movable groove is opened at the lower part of the connecting frame. A protective plate is slidably connected to one side of the movable groove. A control and protection structure is provided inside the main shell. A movable plate is provided at the upper part of the main shell. A movable shell is fixedly connected to the upper part of the movable plate. A cover plate is provided at the upper part of the movable shell. A limit rod is fixedly connected to one side of the cover plate. The inner side of the limit rod is tightly fitted with the movable shell.

[0008] Optionally, the operating structure consists of an operating structure body, a display screen, and control buttons, with the explosion-proof glass corresponding to the position of the display screen and the control buttons corresponding to the position of the protective plate.

[0009] Optionally, the connecting frame is connected to the fixed frame by connecting bolts, and a movable rod is fixedly connected to the lower part of the protective plate, with one side of the movable rod connected to the pull rod of the fixed rod.

[0010] Optionally, the upper part of the fixing rod is inserted into the protective plate, the fixing rod passes through the fixing frame, and a supporting spring is provided between the pull rod and the movable rod of the fixing rod.

[0011] Optionally, half of a horn tube is provided on each side of the cover plate and the movable housing, and a permanent magnet vacuum circuit breaker is provided inside the movable housing and the cover plate.

[0012] Optionally, a slider is provided on the upper part of the main housing, and a movable plate is slidably connected to the upper part of the slider. The movable housing is connected to the cover plate by bolts.

[0013] This utility model provides a mine explosion-proof permanent magnet vacuum power supply switch, which has the following advantages:

[0014] 1. This mine-use explosion-proof permanent magnet vacuum feeder switch, through the setting of a connecting frame, a fixed frame, explosion-proof glass, and a protective plate, has the effect of isolating and protecting the display screen and control buttons of the operating structure. Through the cooperation of the fixed rod, the movable rod, and the movable groove, the control buttons can be easily pressed during use, thereby facilitating the isolation of the control buttons and achieving the purpose of protecting the control buttons.

[0015] 2. This mine-use explosion-proof permanent magnet vacuum feeder switch, through the setting of a cover plate, movable outer shell, movable plate and horn tube, has the effect of easily separating the electrical equipment inside the shell. Through the cooperation of limit rod and slider, the upper part of the shell can be easily opened and closed during use, thereby achieving the function of separating the electrical equipment from the shell and making it easy to replace the damaged shell. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the protective structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-section of the protective structure of this utility model;

[0019] Figure 4 This utility model Figure 4 A magnified structural diagram of part A in the middle;

[0020] Figure 5 This is a schematic diagram of the upper part of the outer shell structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the outer shell structure of this utility model.

[0022] In the diagram: 1. Main casing; 2. Control and protection structure; 3. Movable plate; 4. Slider; 5. Horn tube; 6. Cover plate; 7. Limiting rod; 8. Movable casing; 9. Explosion-proof glass; 10. Fixed frame; 11. Explosion-proof door; 12. Protective plate; 13. Movable rod; 14. Fixed rod; 15. Movable groove; 16. Control button; 17. Main body of operating structure; 18. Display screen; 19. Connecting frame; 20. Permanent magnet vacuum circuit breaker. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example

[0025] Please see Figures 1 to 6 The present invention provides a technical solution including a main shell 1 and an explosion-proof door 11. The main shell 1 is hinged to one side of the explosion-proof door 11. An operating structure is bolted to the inside of the explosion-proof door 11. A connecting frame 19 is fixedly connected to the outside of the explosion-proof door 11. A fixing frame 10 is provided on the outside of the connecting frame 19. An explosion-proof glass 9 is provided between the fixing frame 10 and the connecting frame 19. A movable groove 15 is opened at the lower part of the connecting frame 19. A protective plate 12 is slidably connected to one side of the movable groove 15. A control and protection structure 2 is provided inside the main shell 1. A movable plate 3 is provided at the upper part of the main shell 1. A movable shell 8 is fixedly connected to the upper part of the movable plate 3. A cover plate 6 is provided at the upper part of the movable shell 8. A limit rod 7 is fixedly connected to one side of the cover plate 6. The inner side of the limit rod 7 is tightly fitted with the movable shell 8.

[0026] Specifically, the main body shell 1, explosion-proof door 11, movable plate 3, movable shell 8 and cover plate 6 are all made of explosion-proof material. A rubber sealing ring is set between the explosion-proof door 11 and the main body shell 1, and the edge of the explosion-proof glass 9 is filled with silicone rubber sealant.

[0027] Please see Figures 2 to 4 The operating structure consists of the main body 17, the display screen 18, and the control buttons 16. The explosion-proof glass 9 corresponds to the position of the display screen 18, and the control buttons 16 correspond to the position of the protective plate 12.

[0028] Specifically, the display screen 18 and control buttons 16 are located inside the explosion-proof door 11. The display screen 18 and control buttons 16 are respectively connected to the main body of the operating structure 17, and the main body of the operating structure 17 is connected to the control protection structure 2 through wires.

[0029] Please see Figures 1 to 4 The connecting frame 19 is connected to the fixed frame 10 by connecting bolts. The lower part of the protective plate 12 is fixedly connected to the movable rod 13, and one side of the movable rod 13 is connected to the pull rod of the fixed rod 14.

[0030] Specifically, the connecting frame 19 is connected to the explosion-proof door 11 by welding, and the movable groove 15 extends to the inside of the fixed frame 10.

[0031] Please see Figures 1 to 4 The upper part of the fixing rod 14 is inserted into the protective plate 12. The fixing rod 14 passes through the fixing frame 10. A spring with a reset function is provided between the pull rod of the fixing rod 14 and the movable rod 13.

[0032] Specifically, the inner side of the movable rod 13 is fitted with the explosion-proof door 11, and the upper part of the movable rod 13 is fitted with the connecting frame 19 and the fixed frame 10.

[0033] Please see Figure 1 , Figures 5 to 6 Half of a horn tube 5 is provided on both sides of the cover plate 6 and the movable outer shell 8, and a permanent magnet vacuum circuit breaker 20 is provided inside the movable outer shell 8 and the cover plate 6.

[0034] Specifically, the lower part of the permanent magnet vacuum circuit breaker 20 is connected to the control and protection structure 2 via a wire, and wires are provided on both sides of the permanent magnet vacuum circuit breaker 20 to connect to the mine circuit. The wires of the permanent magnet vacuum circuit breaker 20 pass through the horn tube 5.

[0035] Please see Figure 1 , Figures 5 to 6 A slider 4 is provided on the upper part of the main shell 1, and a movable plate 3 is slidably connected to the upper part of the slider 4. The movable shell 8 is connected to the cover plate 6 by bolts.

[0036] Specifically, the limiting rod 7 is L-shaped and is located at the edge of the cover plate 6 and the movable outer shell 8.

[0037] During use, the status of the mine explosion-proof permanent magnet vacuum feeder switch is viewed through the explosion-proof glass 9 on the display screen 18. The explosion-proof glass 9 protects the display screen 18, and the protective plate 12 shields the control buttons 16 to prevent accidental touches and impacts. Through the arrangement of the connecting frame 19, the fixing frame 10, the explosion-proof glass 9, and the protective plate 12, the display screen 18 and control buttons 16 of the operating structure are isolated and protected. When operation is required, the fixing rod 14 is pulled outward to separate the upper insert of the fixing rod 14 from the fixing frame 10, and then pulled downward to allow the movable... Rod 13 moves the protective plate 12 downward within the movable slot 15, exposing the control button 16 for control circuit operation. The trigger signal of the control button 16 is transmitted to the main body 17 of the operating structure and then through wires to the control protection structure 2, enabling the permanent magnet vacuum circuit breaker 20 to connect and disconnect the circuit. Through the coordinated arrangement of the fixed rod 14, the movable rod 13, and the movable slot 15, the control button 16 can be easily pressed during use, thus facilitating the isolation of the control button 16 and achieving the purpose of protecting the control button 16.

[0038] When the outer casing structure needs to be replaced, remove the bolts connecting the cover plate 6 and the movable outer casing 8, separating the cover plate 6 from the movable outer casing 8. This causes half of the horn tube 5 to rise, allowing the wires connecting the permanent magnet vacuum circuit breaker 20 to the mine circuit to be directly separated from the outer casing structure upwards. Then, move the movable plate 3 to both sides, causing the movable outer casing 8 to move accordingly, exposing the permanent magnet vacuum circuit breaker 20. Remove its fixing bolts, and the permanent magnet vacuum circuit breaker 20 can be taken out through the space created in the upper part of the outer casing structure. Before removal, remove the bolts connecting the control and protection structure 2 and the operating structure, and then proceed through the upper part of the outer casing structure one by one. The device can be moved out of the outer casing for replacement. The arrangement of the cover plate 6, movable outer casing 8, movable plate 3, and horn tube 5 allows for easy separation of the electrical equipment inside the casing. After replacement, the electrical components are reinstalled, and the movable outer casing 8 is pushed back into place. The cover plate 6 connects to the movable outer casing 8, and the limiting rod 7 limits and fixes the two movable outer casings 8. The combination of the limiting rod 7 and the slider 4 facilitates the opening and closing of the upper part of the casing during use, thus separating the electrical equipment from the casing and enabling easy replacement of damaged casings.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mine explosion-proof permanent magnet vacuum feeder switch, comprising a main body shell (1) and an explosion-proof door (11), characterized in that: The explosion-proof door (11) is hinged to one side with a main shell (1). The explosion-proof door (11) is connected to an operating structure by bolts. A connecting frame (19) is fixedly connected to the outside of the explosion-proof door (11). A fixed frame (10) is provided on the outside of the connecting frame (19). An explosion-proof glass (9) is provided between the fixed frame (10) and the connecting frame (19). A movable groove (15) is provided at the bottom of the connecting frame (19). A protective plate (12) is slidably connected to one side of the movable groove (15). A control and protection structure (2) is provided inside the main shell (1). A movable plate (3) is provided on the upper part of the main shell (1). A movable shell (8) is fixedly connected to the upper part of the movable plate (3). A cover plate (6) is provided on the upper part of the movable shell (8). A limit rod (7) is fixedly connected to one side of the cover plate (6). The inner side of the limit rod (7) is tightly fitted with the movable shell (8).

2. The mine-used explosion-proof permanent-magnet vacuum feeder switch according to claim 1, characterized in that: The operating structure consists of an operating structure body (17), a display screen (18), and control buttons (16). The explosion-proof glass (9) corresponds to the position of the display screen (18), and the control buttons (16) correspond to the position of the protective plate (12).

3. The explosion-proof permanent-magnet vacuum feeder switch for mine according to claim 1, characterized in that: The connecting frame (19) is connected to the fixed frame (10) by connecting bolts. The lower part of the protective plate (12) is fixedly connected to a movable rod (13), and one side of the movable rod (13) is connected to the pull rod of the fixed rod (14).

4. The explosion-proof permanent-magnet vacuum feeder switch for mine according to claim 3, characterized in that: The upper part of the fixed rod (14) is inserted into the protective plate (12), the fixed rod (14) passes through the fixed frame (10), and a supporting spring is provided between the pull rod of the fixed rod (14) and the movable rod (13).

5. The explosion-proof permanent-magnet vacuum feeder switch for mine according to claim 1, characterized in that: Half of a horn tube (5) is provided on both sides of the cover plate (6) and the movable outer shell (8), and a permanent magnet vacuum circuit breaker (20) is provided inside the movable outer shell (8) and the cover plate (6).

6. The explosion-proof permanent-magnet vacuum feeder switch for mine according to claim 1, characterized in that: The upper part of the main shell (1) is provided with a slider (4), and the upper part of the slider (4) is slidably connected with a movable plate (3). The movable shell (8) is connected to the cover plate (6) by bolts.

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