Fireproof and dustproof cable branch box

Abstract

The utility model relates to electrical equipment technical field discloses a fire -prevention dustproof cable branch box, including branch box, the branch box front side is hinged with the protective door, is established with a plurality of line holes in branch box bottom, is fixedly connected with the mounting support in branch box, is fixedly connected with the top cover in branch box top, the top cover bottom is fixedly connected with the suspension fire extinguisher, and branch box one side is provided with air intake mechanism, and air intake mechanism includes the protective cover fixedly connected in branch box one side, the connecting plate is fixedly connected in the protective cover bottom, and the high -speed fan is fixedly connected in the protective cover. The suspension fire extinguisher of top cover bottom can cope with the fire in the box in time, reduces the fire risk, and the air intake mechanism is primarily filtered air through the dust screen of movable inner cover, and the high -speed fan drives movable inner cover to go up and down when operating, and the brush in fixed outer cover is cleaned automatically dust screen, need not manual frequent dismounting and cleaning, improve maintenance convenient degree, guarantee branch box equipment operation in safe temperature interval.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a fireproof and dustproof cable branch box. Background Technology

[0002] Cable distribution boxes are outdoor or indoor power distribution equipment used in power distribution systems for branching, connecting and distributing cable lines. They can solve problems related to cable T-connections, branching and fault isolation, and are widely used in urban power grids, industrial parks, residential communities and other scenarios. When a cable branch box is in operation, the internal busbars, branch joints, and other current-carrying components generate heat due to the flow of current. Therefore, an air outlet channel is installed inside the cable branch box to create air convection, naturally dissipating the heat and maintaining the equipment within a safe temperature range. For example, the existing Chinese utility model patent with publication number CN222868525U discloses a dustproof structure for a cable branch box, including a cable branch box and detachable dustproof plates on both sides of the cable branch box. The cable branch box includes an upper box and a lower box. The upper box has rotating doors at the front and rear, and the lower box has embedding grooves on both side walls. The surface of each embedding groove is decorated with several... The device features a heat dissipation hole and a mounting block on both sides of the embedded groove. Each mounting block has several snap-fit ​​holes on its surface. Several guide rods are provided at the top and bottom of the embedded groove. The dustproof plate has an opening in the middle, and a dustproof net is installed inside the opening. This application uses a dustproof net to prevent dust from the external environment from entering the cable branch box. However, after a period of use, dust will accumulate on the dustproof net, affecting air circulation inside the branch box. Although this application improves the efficiency of dustproof plate disassembly and assembly when cleaning the dustproof net, it still requires regular manual disassembly and cleaning, which makes it difficult to further improve the convenience of dustproof net maintenance. Utility Model Content

[0003] The purpose of this utility model is to provide a fireproof and dustproof cable branch box. The movable inner cover that can be raised and lowered by itself, together with the dustproof net and brush, can realize automatic dust removal and accelerate air convection heat dissipation. It does not require frequent manual maintenance and can effectively solve the problems in the background art by ensuring the safe operation of the equipment.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fireproof and dustproof cable distribution box includes a distribution box with a protective door hinged to the front side, multiple cable holes at the bottom of the distribution box, a mounting bracket fixedly connected inside the distribution box, a top cover fixedly connected to the top of the distribution box, a suspended fire extinguisher fixedly connected to the bottom of the top cover, an air intake mechanism on one side of the distribution box, the air intake mechanism including a protective cover fixedly connected to one side of the distribution box, a connecting plate fixedly connected to the bottom of the protective cover, a high-speed fan fixedly connected inside the protective cover, a fixed outer cover fixedly connected to the bottom of the connecting plate, and a movable inner cover interlocking between the connecting plate and the fixed outer cover.

[0005] As a further preferred embodiment of this utility model, the branch box is provided with a first air inlet on the side near the protective cover, and the first air inlet is connected to the inner cavity of the protective cover, so that the high-speed fan draws external air into the branch box through the first air inlet.

[0006] As a further preferred embodiment of this utility model, the top cover is provided with multiple exhaust vents on the front and rear sides of the branch box. The exhaust vents with lower openings allow hot air inside the branch box to be discharged, while reducing the possibility of external dust entering the branch box through the exhaust vents.

[0007] As a further preferred embodiment of this utility model, the high-speed fan is electrically connected to the control switch inside the branch box via a cable.

[0008] As a further preferred embodiment of this utility model, the fixed outer cover has multiple second air inlets circumferentially opened on the inner side. The fixed outer cover located above the second air inlets is fixedly connected to a limiting protrusion to limit the maximum upward movement of the movable inner cover. A fixing rod is fixedly connected to the bottom of the second air inlet, and multiple brush bristles are fixedly connected to one side of the fixing rod, which can provide a cleaning function for the dustproof net when the movable inner cover moves up and down inside the fixed outer cover.

[0009] As a further preferred embodiment of this utility model, the inner side of the movable inner cover is provided with a plurality of third air inlets, and a dustproof net is fixedly connected inside the third air inlet. When external air enters the movable inner cover through the second air inlet and the third air inlet, the dust in the air can be filtered.

[0010] As a further preferred embodiment of this utility model, the top of the movable inner cover is fixedly connected to an attraction top plate, and a fourth air inlet is provided at the center of the attraction top plate. When the high-speed fan is running, the negative pressure suction generated by the high-speed fan can work with the attraction top plate to lift the movable inner cover inside the fixed outer cover, thereby aligning the third air inlet with the corresponding second air inlet.

[0011] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the suspended fire extinguisher at the bottom of the top cover can respond to fires inside the box in a timely manner and reduce the risk of fire. The air intake mechanism filters the air through the dustproof net of the movable inner cover, and the high-speed fan drives the movable inner cover to rise and fall. Together with the brush bristles inside the fixed outer cover, the dustproof net is automatically cleaned without the need for frequent manual disassembly and cleaning, which improves the convenience of maintenance and ensures that the equipment inside the branch box operates within a safe temperature range. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a bottom view of the main structure of this utility model; Figure 3 This is a schematic diagram of the air intake mechanism installation structure of this utility model; Figure 4 This is a cross-sectional view of the connecting plate, fixed outer cover, and movable inner cover of this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0013] In the diagram: 1. Branch box; 2. Protective door; 3. Cable hole; 4. Mounting bracket; 5. Top cover; 6. Suspended fire extinguisher; 7. Air intake mechanism; 8. Protective cover; 9. High-speed fan; 10. Connecting plate; 11. Fixed outer cover; 12. Movable inner cover; 13. First air inlet; 14. Exhaust outlet; 15. Second air inlet; 16. Fixing rod; 17. Brush bristles; 18. Third air inlet; 19. Dustproof net; 20. Limiting protrusion; 21. Suction top plate; 22. Fourth air inlet. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figures 1-5 As shown, the present invention provides a fireproof and dustproof cable branch box, including a branch box 1, a protective door 2 hinged to the front of the branch box 1, multiple wire holes 3 opened at the bottom of the branch box 1, a mounting bracket 4 fixedly connected inside the branch box 1, a top cover 5 fixedly connected to the top of the branch box 1, a suspended fire extinguisher 6 fixedly connected to the bottom of the top cover 5, an air intake mechanism 7 provided on one side of the branch box 1, the air intake mechanism 7 including a protective cover 8 fixedly connected to one side of the branch box 1, a connecting plate 10 fixedly connected to the bottom of the protective cover 8, a high-speed fan 9 fixedly connected inside the protective cover 8, a fixed outer cover 11 fixedly connected to the bottom of the connecting plate 10, and a movable inner cover 12 inserted between the connecting plate 10 and the fixed outer cover 11.

[0016] like Figures 1-2As shown, a first air inlet 13 is provided on the side of the branch box 1 near the protective cover 8, and the first air inlet 13 is connected to the inner cavity of the protective cover 8, so that the high-speed fan 9 can draw external air into the branch box 1 through the first air inlet 13. The top cover 5 is provided with multiple exhaust ports 14 on the front and rear sides of the branch box 1, respectively. The exhaust ports 14 with the lower opening can discharge hot air in the branch box 1, and at the same time reduce the situation of external dust entering the branch box 1 through the exhaust ports 14. The high-speed fan 9 is electrically connected to the control switch inside the branch box 1 through a cable.

[0017] like Figures 3-5 As shown, the fixed outer cover 11 has multiple second air inlets 15 circumferentially opened on its inner side. A limiting protrusion 20 is fixedly connected to the fixed outer cover 11 above the second air inlets 15 to limit the maximum upward movement of the movable inner cover 12. A fixing rod 16 is fixedly connected to the bottom of each second air inlet 15. Multiple brush bristles 17 are fixedly connected to one side of the fixing rod 16, enabling the movable inner cover 12 to clean the dust filter 19 when it moves up and down within the fixed outer cover 11. The movable inner cover 12 has multiple third air inlets 18 circumferentially opened on its inner side. A dustproof net 19 is fixedly connected inside the air vent 18. When external air enters the movable inner cover 12 through the second air inlet 15 and the third air inlet 18, it can filter the dust in the air. A suction top plate 21 is fixedly connected to the top of the movable inner cover 12. A fourth air inlet 22 is opened at the center of the suction top plate 21. When the high-speed fan 9 is running, the negative pressure suction generated by the high-speed fan 9 can work with the suction top plate 21 to lift the movable inner cover 12 inside the fixed outer cover 11, so that the third air inlet 18 is aligned with the corresponding second air inlet 15.

[0018] It should be noted that this utility model is a fireproof and dustproof cable branch box. First, the external cable needs to be connected into the box through the wire hole 3 at the bottom of the branch box 1 and fixed on the mounting bracket 4 to complete the cable branching, connection and distribution. Then, the cable is wrapped by installing a sealing sleeve in the wire hole 3. After that, the protective door 2 is closed to form basic protection for the internal components of the box. When branch box 1 starts running, its internal busbars, branch connectors, and other current-carrying components generate heat due to the current flow. A pre-installed temperature monitoring component inside branch box 1 monitors the internal temperature in real time. When the temperature monitoring component detects that the internal temperature of branch box 1 reaches a preset threshold, it sends an electrical signal to the control switch of the high-speed fan 9 inside branch box 1. Upon receiving the signal, the control switch of the high-speed fan 9 connects to the power supply of the high-speed fan 9 via a cable, starting the high-speed fan 9. After the high-speed fan 9 starts, under the action of negative pressure suction, external air first enters the fixed outer cover 11 and initially enters the airflow channel through the second circumferential air inlet 15 inside the fixed outer cover 11. Simultaneously, the negative pressure suction acts on the suction top plate 21 at the top of the movable inner cover 12, lifting the movable inner cover 12 upwards within the fixed outer cover 11. At the same time, air from the third air inlet 18... The dustproof net 19 will rub against the bristles 17 on one side of the fixed rod 16 inside the second air inlet 15. The bristles 17 will sweep off the dust adhering to the surface of the dustproof net 19, realizing the automatic cleaning of the dustproof net 19 until the third air inlet 18 on the inner circumferential side of the movable inner cover 12 is aligned with the second air inlet 15 of the fixed outer cover 11. At this time, the outside air enters the movable inner cover 12 through the aligned second air inlet 15 and third air inlet 18. When flowing through the third air inlet 18, the dust in the air will be filtered by the dustproof net 19 inside the third air inlet 18 to achieve the dustproof effect. The filtered clean air continues to flow upward and enters the interior of the protective cover 8 through the fourth air inlet 22 in the center of the top plate 21. Then, it enters the interior of the branch box 1 through the first air inlet 13 on the side of the branch box 1 near the protective cover 8 and mixes with the hot air in the branch box 1. As clean air continuously enters, the air pressure inside the branch box 1 increases. Hot air is discharged from the exhaust vents 14 on the front and rear sides of the top cover 5, forming a complete air convection and rapidly reducing the temperature inside the branch box 1. When the temperature monitoring component detects that the temperature inside the branch box 1 has dropped below the safety threshold, it will send a signal to the control switch again. The control switch cuts off the power to the high-speed fan 9, and the high-speed fan 9 stops running. The movable inner cover 12 loses its negative pressure suction support and falls down along the inner wall of the fixed outer cover 11 under its own gravity. During the fall, the dustproof net 19 inside the third air inlet 18 will rub against the brush bristles 17 on one side of the fixed rod 16 inside the second air inlet 15 again. The brush bristles 17 will sweep the dust adhering to the surface of the dustproof net 19. In addition, if a fire occurs inside the branch box 1, the suspended fire extinguisher 6 at the bottom of the top cover 5 can be automatically activated to release extinguishing medium, quickly extinguish the initial fire, and reduce the risk of fire damage to the branch box 1 and its internal equipment.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fireproof and dustproof cable branch box, characterized in that: The device includes a branch box (1), a protective door (2) hinged to the front of the branch box (1), multiple wire holes (3) at the bottom of the branch box (1), a mounting bracket (4) fixedly connected inside the branch box (1), a top cover (5) fixedly connected to the top of the branch box (1), a suspended fire extinguisher (6) fixedly connected to the bottom of the top cover (5), an air intake mechanism (7) provided on one side of the branch box (1), the air intake mechanism (7) including a protective cover (8) fixedly connected to one side of the branch box (1), a connecting plate (10) fixedly connected to the bottom of the protective cover (8), a high-speed fan (9) fixedly connected inside the protective cover (8), a fixed outer cover (11) fixedly connected to the bottom of the connecting plate (10), and a movable inner cover (12) interlaced between the connecting plate (10) and the fixed outer cover (11).

2. The fireproof and dustproof cable branch box according to claim 1, characterized in that: The branch box (1) has a first air inlet (13) on the side near the protective cover (8), and the first air inlet (13) is connected to the inner cavity of the protective cover (8).

3. A fireproof and dustproof cable branch box according to claim 1, characterized in that: The top cover (5) is provided with multiple exhaust vents (14) on the front and rear sides of the branch box (1).

4. A fireproof and dustproof cable branch box according to claim 1, characterized in that: The high-speed fan (9) is electrically connected to the control switch inside the branch box (1) via a cable.

5. A fireproof and dustproof cable branch box according to claim 1, characterized in that: The fixed outer cover (11) has multiple second air inlets (15) circumferentially opened on the inner side. The fixed outer cover (11) located above the second air inlets (15) is fixedly connected to a limiting protrusion (20). A fixing rod (16) is fixedly connected to the bottom of the second air inlet (15). Multiple bristles (17) are fixedly connected to one side of the fixing rod (16).

6. A fireproof and dustproof cable branch box according to claim 1, characterized in that: The inner side of the movable inner cover (12) is provided with multiple third air inlets (18), and a dustproof net (19) is fixedly connected inside the third air inlet (18).

7. A fireproof and dustproof cable branch box according to claim 6, characterized in that: The top of the movable inner cover (12) is fixedly connected to an attraction top plate (21), and a fourth air inlet (22) is provided at the center of the attraction top plate (21).

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