Explosion-proof junction box

Abstract

The utility model discloses an explosion-proof junction box, which relates to the technical field of explosion-proof junction boxes and comprises a junction box body, the top end of the junction box body is hinged with a top cover through a hinge, and an anti-impact part is arranged in the junction box body. According to the explosion-proof junction box provided by the utility model, the explosion-proof blocking net is fixed through the frame, then the mounting plate is in butt joint with the mounting groove above the junction box body, the frame is fixed in the junction box body by means of the locking bolt, and after the top cover covers the junction box body, the junction box body and the top cover are locked by the locking component, so that the junction box body is fixed to the junction box body. When the interior of the junction box body explodes to cause chippings to impact the top cover, the chippings are intercepted by the anti-explosion blocking net below the top cover, so that the anti-explosion blocking net can be conveniently and quickly installed, the anti-explosion blocking net can be conveniently replaced or maintained at any time, and meanwhile, the chippings generated by explosion can be conveniently intercepted.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof junction boxes, in particular to an explosion-proof junction box. Background Art

[0002] The explosion-proof junction box is a key component used in power distribution systems in explosive environments. It can prevent overload and arcing of electrical equipment, thereby preventing explosion accidents caused by electrical breakdown, electric sparks, static electricity, etc. It is widely used in dangerous environments in industrial fields such as chemical, petroleum, natural gas, and medicine.

[0003] For example, the explosion-proof junction box with publication number CN219181118U includes a main body, an inner cavity is provided inside the main body, a temperature and humidity sensor is arranged at the top of the side wall on one side of the inner cavity, a data processing terminal is arranged on the side of the first mounting bar away from the cabinet door, a second connection port is evenly arranged at the bottom of the side wall on the side of the data processing terminal away from the first mounting bar, and a control panel is fixedly connected to the middle of the side wall on the end of the cabinet door away from the inner cavity. Using this device, the temperature and humidity inside the explosion-proof junction box can be monitored in real time, and reflected and prompted from the outside, so as to protect the electronic components inside the explosion-proof junction box.

[0004] In the prior art, when an explosion occurs due to combustion inside the explosion-proof junction box, debris will directly impact the box cover, causing the connection between the box cover and the box body to loosen, resulting in reduced sealing. Utility Model Content

[0005] In view of the problem that when an explosion occurs due to combustion inside the above-mentioned existing explosion-proof junction box, debris will directly impact the box cover, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide an explosion-proof junction box, the purpose of which is to intercept the debris generated by the explosion through the explosion-proof barrier to prevent it from directly impacting the top cover.

[0007] To solve the above technical problems, the utility model provides the following technical solutions: an explosion-proof junction box, comprising a junction box body, a top cover is hinged at the top of the junction box body by a hinge, an impact-proof component is arranged inside the junction box body, the impact-proof component comprises a frame clamped inside the junction box body, the frame is sleeved on the outer wall of the explosion-proof barrier, an installation groove is arranged at the top of the junction box body, a plurality of installation plates are fixedly connected on both sides of the frame, the installation plates are clamped inside the installation grooves, a locking bolt is threadedly connected at the top of the installation plate, the locking bolt passes through the installation plate and is threadedly connected to the inner bottom end of the installation groove, a handle is fixedly connected to the top of the top cover, and a locking assembly is arranged inside the junction box body.

[0008] As a preferred solution of the explosion-proof junction box described in the utility model, the locking assembly includes two positioning seats clamped on the inner top of the junction box body, the outer walls of the two positioning seats are fixedly connected with positioning rings, and the positioning seats are clamped on the inner top of the junction box body through the positioning rings to limit the positioning seats.

[0009] As a preferred solution of the explosion-proof junction box of the utility model, the top end of the positioning seat is provided with two locking grooves, the bottom end of the top cover is provided with two movable grooves, and the two movable grooves are respectively connected with the two locking grooves to ensure smooth movement of the movable block.

[0010] As a preferred solution of the explosion-proof junction box described in the utility model, a movable block is slidably connected in the movable groove, and locking blocks are fixedly connected to the sides of the two movable blocks that are away from each other. The two movable blocks are respectively clamped in the two locking grooves by two locking blocks to lock the movable blocks.

[0011] As a preferred solution of the explosion-proof junction box of the utility model, the shape of the locking groove is adapted to the shape of the locking block, the shape of the movable groove is adapted to the shape of the movable block, and the opposite surfaces of the two movable blocks are respectively fixedly connected to the two ends of the two springs to support the two movable blocks.

[0012] As a preferred solution of the explosion-proof junction box of the utility model, four slide grooves are opened on the top of the top cover, two slide grooves are connected to the same movable groove, and the tops of the two movable blocks are fixedly connected with push plates, and the two push plates are respectively slidably connected in the two slide grooves to push the movable blocks.

[0013] As a preferred solution of the explosion-proof junction box of the utility model, two mounting ears are fixedly connected to both sides of the junction box body, and the shape of the junction box body is matched with the shape of the top cover to position the junction box body.

[0014] Beneficial effects of the utility model:

[0015] 1. The explosion-proof screen is fixed by a frame, and then connected to the mounting groove on the top of the junction box body through the mounting plate, and the frame is fixed to the inside of the junction box body with the help of locking bolts. After the top cover covers the top of the junction box body, the locking component will lock the junction box body and the top cover. When debris caused by the explosion inside the junction box body impacts the top cover, it will be intercepted by the explosion-proof screen under the top cover, which facilitates the rapid installation of the explosion-proof screen, so that the explosion-proof screen can be replaced or maintained at any time. It also facilitates the interception of debris generated by the explosion to prevent the top cover from bending due to impact and affecting the sealing effect between the junction box body and the junction box body.

[0016] 2. By releasing the two push plates, the two springs between the push plates push the two movable blocks. As the two movable blocks slide inside the movable groove, because the movable groove is connected with the locking groove, one end of the movable block will also enter the locking groove, and then the locking block on one side of the movable block will also completely enter the locking groove, and finally the top cover will be locked, which facilitates the locking of the junction box body and the top cover, so that the junction box body and the top cover can be quickly connected, and the use rate of bolts is reduced, thereby improving the maintenance efficiency of the junction box body and the top cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 The figure is a schematic diagram of the overall structure of the explosion-proof junction box of the utility model.

[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the explosion-proof junction box of the utility model.

[0020] Figure 3 The utility model explosion-proof junction box Figure 2 Enlarged schematic diagram of the structure.

[0021] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the positioning plate of the explosion-proof junction box of the utility model.

[0022] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the movable slot of the explosion-proof junction box of the utility model.

[0023] Description of reference numerals:

[0024] 1. Junction box body; 2. Top cover; 3. Anti-impact component; 31. Frame; 32. Explosion-proof screen; 33. Mounting slot; 34. Mounting plate; 35. Locking bolt; 36. Handle; 37. Locking assembly; 371. Positioning seat; 372. Positioning ring; 373. Locking slot; 374. Movable slot; 375. Movable block; 376. Locking block; 377. Spring; 378. Slide slot; 379. Push plate; 4. Mounting ear. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1-2 , which is the first embodiment of the utility model, provides an explosion-proof junction box, the explosion-proof junction box comprises a junction box body 1, the top of the junction box body 1 is hinged with a top cover 2 through a hinge, an impact-proof component 3 is arranged inside the junction box body 1, the impact-proof component 3 comprises a frame 31 clamped inside the junction box body 1, the frame 31 is sleeved on the outer wall of the explosion-proof barrier 32, a mounting groove 33 is opened at the top of the junction box body 1, a plurality of mounting plates 34 are fixedly connected on both sides of the frame 31, the mounting plates 34 are clamped inside the mounting grooves 33, a locking bolt 35 is threadedly connected at the top of the mounting plate 34, the locking bolt 35 passes through the mounting plate 34 and is threadedly connected to the inner bottom end of the mounting groove 33, a handle 36 is fixedly connected to the top of the top cover 2, and a locking assembly 37 is arranged inside the junction box body 1.

[0028] Two mounting ears 4 are fixedly connected to both sides of the junction box body 1 , and the shape of the junction box body 1 is adapted to the shape of the top cover 2 .

[0029] During use, the explosion-proof screen 32 is installed inside the frame 31, and then the mounting plates 34 on both sides of the frame 31 are connected to the mounting grooves 33 above the junction box body 1. Then, the locking bolts 35 are inserted above the mounting plates 34. When the locking bolts 35 are turned, the locking bolts 35 gradually enter the mounting grooves 33. After the frame 31 and the explosion-proof screen 32 inside it are installed inside the junction box body 1, the top cover 2 can be covered on the top of the junction box body 1 so that the top cover 2 completely seals the junction box body 1. Then, the junction box body 1 and the top cover 2 are locked by the locking component. When debris from the explosion inside the junction box body 1 impacts the top cover 2, it will be intercepted by the explosion-proof screen 32 under the top cover 2, which facilitates the rapid installation of the explosion-proof screen 32, so that the explosion-proof screen 32 can be replaced or maintained at any time. At the same time, it also facilitates the interception of debris generated by the explosion, thereby preventing the top cover 2 from bending due to the impact and affecting the sealing effect between the top cover 2 and the junction box body 1.

[0030] Example 2

[0031] Reference Figure 1-5 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0032] The locking assembly 37 includes two positioning seats 371 that are clamped at the top of the inner part of the junction box body 1. The outer walls of the two positioning seats 371 are fixedly connected with positioning rings 372. The positioning seats 371 are clamped at the top of the inner part of the junction box body 1 through the positioning rings 372. The top of the positioning seat 371 is provided with two locking grooves 373. The bottom end of the top cover 2 is provided with two movable grooves 374. The two movable grooves 374 are respectively connected with the two locking grooves 373. A movable block 375 is slidably connected in the movable groove 374. The two movable blocks 375 are fixedly connected with a locking block 376 on the side away from each other. The movable block 375 is respectively connected to the inside of the two locking grooves 373 through two locking blocks 376. The shape of the locking groove 373 is adapted to the shape of the locking block 376. The shape of the movable groove 374 is adapted to the shape of the movable block 375. The opposite surfaces of the two movable blocks 375 are respectively fixedly connected to the two ends of the two springs 377. Four sliding grooves 378 are opened at the top of the top cover 2. Two sliding grooves 378 are connected to the same movable groove 374. The tops of the two movable blocks 375 are fixedly connected with push plates 379. The two push plates 379 are respectively slidably connected in the two sliding grooves 378.

[0033] During use, after the junction box body 1 and the top cover 2 are overlapped, the push plates 379 squeezed to the two sides of the handle 36 are released at the same time. After the two push plates 379 lose their restrictions, the two springs 377 between the two push plates 379 will push the two movable blocks 375. As the two movable blocks 375 slide inside the movable grooves 374, the two push plates 379 will also move in the two slide grooves 378. After the top cover 2 is overlapped with the junction box body 1, the movable groove 374 below the top cover 2 will align with the positioning seat 378 inside the junction box body 1. 1, and one end of the movable block 375 will also enter the locking groove 373. After the two movable blocks 375 are pushed by the spring 377, the locking block 376 on one side of the movable block 375 will also completely enter the locking groove 373, so that the top cover 2 is locked above the junction box body 1, which is convenient for locking the junction box body 1 and the top cover 2, so that the junction box body 1 and the top cover 2 can be quickly connected, and the use rate of bolts is reduced, thereby improving the maintenance efficiency of the junction box body 1 and the top cover 2.

[0034] The remaining structures are the same as those of Example 1.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An explosion-proof junction box, comprising a junction box body (1), characterized in that: The top of the junction box body (1) is hingedly connected to a top cover (2) via a hinge. An impact-proof component (3) is provided inside the junction box body (1). The impact-proof component (3) includes a frame (31) clamped inside the junction box body (1). The frame (31) is sleeved on the outer wall of the explosion-proof barrier (32). A mounting groove (33) is provided at the top of the junction box body (1). A plurality of mounting plates (34) are fixedly connected to both sides of the frame (31). The mounting plates (34) are clamped inside the mounting grooves (33). A locking bolt (35) is threadedly connected to the top of the mounting plate (34). The locking bolt (35) passes through the mounting plate (34) and is threadedly connected to the bottom end of the mounting groove (33). A handle (36) is fixedly connected to the top of the top cover (2). A locking assembly (37) is provided inside the junction box body (1).

2. The explosion-proof junction box according to claim 1, characterized in that: The locking assembly (37) comprises two positioning seats (371) clamped on the inner top of the junction box body (1), the outer walls of the two positioning seats (371) are fixedly connected with positioning rings (372), and the positioning seats (371) are clamped on the inner top of the junction box body (1) through the positioning rings (372).

3. The explosion-proof junction box according to claim 2, characterized in that: The top end of the positioning seat (371) is provided with two locking grooves (373), and the bottom end of the top cover (2) is provided with two movable grooves (374), and the two movable grooves (374) are respectively connected to the two locking grooves (373).

4. The explosion-proof junction box according to claim 3, characterized in that: A movable block (375) is slidably connected in the movable groove (374), and locking blocks (376) are fixedly connected to the two movable blocks (375) on the sides away from each other. The two movable blocks (375) are respectively clamped in the two locking grooves (373) through the two locking blocks (376).

5. The explosion-proof junction box according to claim 4, characterized in that: The shape of the locking groove (373) matches the shape of the locking block (376), the shape of the movable groove (374) matches the shape of the movable block (375), and the opposite surfaces of the two movable blocks (375) are fixedly connected to the two ends of the two springs (377) respectively.

6. The explosion-proof junction box according to claim 5, characterized in that: The top of the top cover (2) is provided with four slide grooves (378), two of which are connected to the same movable groove (374), and the tops of the two movable blocks (375) are fixedly connected with push plates (379), which are respectively slidably connected in the two slide grooves (378).

7. The explosion-proof junction box according to claim 1, characterized in that: Two mounting ears (4) are fixedly connected to both sides of the junction box body (1), and the shape of the junction box body (1) is compatible with the shape of the top cover (2).

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