An explosion-proof terminal box of a biomass fuel production device
By introducing limit slots, plug-in posts, and spring mechanisms into the explosion-proof junction box, the problem of inconvenient operation of the explosion-proof junction box is solved, achieving rapid sealing and stability, and improving operational efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAIERBEISI (JIANGSU) ENERGY CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-14
AI Technical Summary
The explosion-proof junction boxes of existing biomass fuel production equipment are inconvenient to operate, resulting in low work efficiency and increased labor intensity for operators.
A box cover structure with limit slots, plug-in posts and spring mechanism was designed. The plug-in posts and springs work together to enable quick closing and opening of the explosion-proof junction box. The design of the sealing cover and rubber gasket ensures that the box cover is stable.
It enables rapid opening and closing of the explosion-proof junction box, reduces the labor intensity of operators, improves work efficiency, and enhances the stability and anti-loosening performance of the box cover.
Smart Images

Figure CN224502842U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of explosion-proof junction boxes for biomass fuel production equipment, specifically an explosion-proof junction box for biomass fuel production equipment. Background Technology
[0002] Biomass fuel production equipment is used to convert biomass raw materials (such as crop straw, wood chips, sawdust, etc.) into biomass fuel. In biomass fuel production equipment, explosion-proof junction boxes are important safety devices used to prevent explosions caused by electrical sparks or high temperatures, especially in environments where dust or flammable gases may be generated during the processing of biomass fuel.
[0003] However, most explosion-proof junction boxes on the market are not easy for operators to open and close, which means that operators need to spend a long time opening and closing the junction box when wiring, which not only reduces the operator's work efficiency but also increases the operator's labor intensity. Utility Model Content
[0004] The purpose of this utility model is to provide an explosion-proof junction box for biomass fuel production equipment to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a box body, with a limiting slot provided on the inner side of the top of the box body, and limiting slots provided on both sides of the two ends of the limiting slot; a box cover, with slots provided on both sides of the top of the box cover, and telescopic grooves provided on both sides of the bottom of the slots of the box cover, with a spring elastically connecting the insertion post; and a closing cover, with limiting slots provided on both ends of the bottom of the closing cover.
[0006] Preferably, the enclosure has multiple sets of wiring ports around its perimeter, which penetrate the enclosure, allowing cables to pass through the ports into the enclosure.
[0007] Preferably, the bottom of the lid is adapted to the receiving interface opened on the inner side of the top of the box, and the bottom of the lid can be held in the receiving interface on the inner side of the top of the box.
[0008] Preferably, a spring is provided in the telescopic groove, one end of the spring is connected to the inner wall of the telescopic groove, and the other end is connected to the plug-in post. The two sets of plug-in posts are parallel to the limiting slots opened at both ends of the top receiving interface of the box.
[0009] Preferably, a toggle plate is fixedly connected to the inner end of the plug-in post. The toggle plate extends into the telescopic groove, and moving the toggle plate allows the plug-in post to extend and retract within the telescopic groove.
[0010] Preferably, the limiting slots at both ends of the bottom of the sealing cover are parallel to the actuating plate connected to the rear end of the insertion post in the extended state, and a layer of rubber pads is pasted on both sides of the bottom of the sealing cover.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This invention discloses an explosion-proof junction box for biomass fuel production equipment. When sealing the junction box, first, a lever is activated, causing the plug-in pins to compress against a spring, resulting in synchronous retraction of the pins. The outer ends of the plugs are then retracted into the telescopic grooves. Next, the bottom of the box cover is aligned with the receiving interface on the inner side of the top of the box, and the cover is placed into the receiving interface. Then, the lever is released, and the spring, under tension, ejects the front ends of the plug-in pins from the telescopic grooves, inserting them into the limiting slots on both sides of the receiving interface, parallel to the plug-in pins, thus securing the box cover in the receiving interface. After sealing the enclosure, insert the sealing cover into the slot at the top of the telescopic groove to seal the slot and prevent accidental activation of the actuating plate, which could cause the cover to loosen. At the same time, the actuating plate at the inner end of the insertion post is inserted into the limiting slots at both ends of the bottom of the cover, which are perpendicular to the actuating plate, to fix the actuating plate and prevent the enclosure from shaking, which could cause the spring to drive the insertion post to extend and retract, thus detaching it from the cover. Rubber pads are provided on both sides of the bottom of the sealing cover. Due to their flexibility, the rubber pads ensure that both sides of the sealing cover are fully in contact with the inner wall of the slot, preventing the sealing cover from easily detaching from the slot. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a schematic cross-sectional view of the present invention.
[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the box body of this utility model;
[0016] Figure 4 This is a three-dimensional structural diagram of the box lid of this utility model;
[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the closed cover of this utility model.
[0018] In the diagram: 1. Box body; 2. Box cover; 3. Sealing cover; 4. Connection port; 5. Socket; 6. Telescopic groove; 7. Spring; 8. Plug-in post; 9. Actuating plate; 10. Limiting slot; 11. Limiting groove; 12. Rubber pad; 13. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] Please see Figures 1 to 5 This utility model provides a technical solution: a box body 1, with a limiting slot 11 on the inner side of the top of the box body 1, and limiting slots 11 on both sides of the two ends of the limiting slot 11; a box cover 2, with slots 6 on both sides of the top of the box cover 2, and telescopic grooves 7 on both sides of the bottom of the box cover 2 with springs 8 elastically connecting the plug post 9; a closing cover 3, with limiting slots 12 on both ends of the bottom of the closing cover 3; multiple sets of wiring ports 4 are provided around the box body 1, the wiring ports 4 pass through the box body 1, and the cable can pass through the wiring ports 4 to the inside of the box body 1; the bottom of the box cover 2 is adapted to the receiving interface 5 provided on the inner side of the top of the box body 1, and the box cover 2... The bottom of the device can be held in the receiving interface 5 on the inner side of the top of the box 1; a spring 8 is provided in the telescopic groove 7, one end of the spring 8 is connected to the inner wall of the telescopic groove 7, and the other end is connected to the plug post 9. The two sets of plug posts 9 are parallel to the limiting slots 11 opened at both ends of the receiving interface 5 on the top of the box 1; the inner end of the plug post 9 is fixedly connected to the actuating plate 10, which extends into the telescopic groove 7. By actuating the actuating plate 10, the plug post 9 can be extended and retracted in the telescopic groove 7; the limiting slots 12 opened at both ends of the bottom of the sealing cover 3 are parallel to the actuating plate 10 connected to the rear end of the plug post 9 in the extended state; a layer of rubber pads 13 are pasted on both sides of the bottom of the sealing cover 3.
[0021] In actual use, when sealing the explosion-proof junction box, first move the actuating plate 10, causing the actuating plate 10 to drive the plug post 9 to compress the spring 8, causing the plug post 9 to retract synchronously, retracting the outer end of the plug post 9 into the telescopic groove 7. Then, align the bottom of the box cover 2 with the receiving interface 5 opened on the inner side of the top of the box body 1, and place the box cover 2 into the receiving interface 5. Then release the actuating plate 10. At this time, the spring 8, through tension, pops the front end of the plug post 9 out of the telescopic groove 7 and inserts it into the limiting slots 11 on both sides of the receiving interface 5, which are parallel to the plug post 9, thus securing the box cover 2 in the receiving interface 5, completing the sealing of the box body 1. Next, insert the sealing cover 3 into the slot 6 opened at the top of the telescopic groove 7 to close the slot 6 and prevent accidental contact with the toggle plate 10, which would cause the sealing of the cover 2 to loosen. At the same time, the toggle plate 10 at the inner end of the insertion post 9 is inserted into the limiting slots 12 at both ends of the bottom of the cover 2, which are perpendicular to the toggle plate 10, to fix the toggle plate 10 and prevent the box body 1 from shaking, which would cause the spring 8 to drive the insertion post 9 to extend and retract, thus detaching from the fixing of the cover 2. Rubber pads 13 are provided on both sides of the bottom of the sealing cover 3. Based on the flexibility of the rubber pads 13, the two sides of the sealing cover 3 are fully pressed against the inner wall of the slot 6 to prevent the sealing cover 3 from easily detaching from the slot 6.
[0022] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.
Claims
1. An explosion-proof junction box for a biomass fuel production equipment, characterized in that: include: Box (1), with a limit slot (11) opened on the inner side of the top of the box (1), and limit slots (11) opened on both sides of the limit slot (11); The lid (2) has slots (6) on both sides of the top of the lid (2), and telescopic grooves (7) on both sides of the bottom of the slots (6). The spring (8) is elastically connected to the plug (9). The sealing cover (3) has limit slots (12) at both ends of its bottom.
2. The explosion-proof junction box for a biomass fuel production equipment according to claim 1, characterized in that: The enclosure (1) has multiple sets of wiring ports (4) around its perimeter. The wiring ports (4) penetrate the enclosure (1), and cables can pass through the wiring ports (4) to the interior of the enclosure (1).
3. The explosion-proof junction box for a biomass fuel production equipment according to claim 2, characterized in that: The bottom of the lid (2) is adapted to the receiving interface (5) opened on the inner side of the top of the box body (1), and the bottom of the lid (2) can be held in the receiving interface (5) on the inner side of the top of the box body (1).
4. The explosion-proof junction box for a biomass fuel production equipment according to claim 3, characterized in that: A spring (8) is provided in the telescopic groove (7). One end of the spring (8) is connected to the inner wall of the telescopic groove (7), and the other end is connected to the plug-in post (9). The two sets of plug-in posts (9) are parallel to the limiting slots (11) opened at both ends of the top receiving interface (5) of the box body (1).
5. The explosion-proof junction box for a biomass fuel production equipment according to claim 4, characterized in that: The inner end of the plug (9) is fixedly connected to a toggle plate (10), which extends into the telescopic groove (7). By moving the toggle plate (10), the plug (9) can extend and retract in the telescopic groove (7).
6. The explosion-proof junction box for a biomass fuel production equipment according to claim 5, characterized in that: The limiting slots (12) at both ends of the bottom of the closed cover (3) are parallel to the actuating plate (10) connected to the rear end of the insertion post (9) in the extended state, and a layer of rubber pads (13) are pasted on both sides of the bottom of the closed cover (3).