A double-layer explosion-proof box

Abstract

The utility model relates to a double -deck explosion -proof box. Including the outer box of open mouth in front portion and being equipped with the door frame, the main box door is hingedly installed with main door hinge on the door frame, a plurality of top threading ports are established at the top of outer box body, a plurality of bottom threading ports are established at the bottom, the inside of outer box body is equipped with the support inner plate, and the rear wall fixed connection of support inner plate and outer box, a plurality of windows are established in the lower part of support inner plate, and the detachable inner box is installed in each window, and the inner box includes the inner box body of open mouth in front portion, and the battery assembly is arranged in the inside of inner box body, and the inner box cover with a plurality of inner box threading ports is installed at the front end of inner box body, and the mounting base is established in the upper part of support inner plate, and a plurality of circuit breakers are installed on the mounting base. The utility model provides a double -deck explosion -proof box, and further explosion -proof isolation treatment is provided for the battery assembly in the box, and the overall explosion -proof characteristic of explosion -proof box equipment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof equipment technology, and in particular relates to a double-layer explosion-proof box. Background Technology

[0002] Explosion-proof enclosures refer to enclosures used in explosion-proof scenarios, such as explosion-proof power supply boxes and explosion-proof control boxes. They are safety protection devices used in Zone 20, Zone 21, and Zone 22 environments with flammable dust and Zone 1 and Zone 2 environments with explosive gases. Explosion-proof means using explosion-proof enclosures to isolate important components / connection nodes in flammable and explosive locations from the external environment. The aforementioned explosion-proof enclosure equipment is of great significance to the safety of the system.

[0003] For explosion-proof power supply boxes, when batteries are installed inside, it is necessary to consider not only the explosion-proof nature of the battery on / off control circuit but also the explosion-proof nature of the batteries themselves. Existing explosion-proof boxes do not provide additional explosion-proof measures for the battery components inside, making it difficult for the overall explosion-proof performance of the box to meet the stringent requirements of specific explosion-proof scenarios. Therefore, it is necessary to develop and design a new explosion-proof box structure. Summary of the Invention

[0004] The purpose of this invention is to provide a double-layer explosion-proof box that provides further explosion-proof isolation for the battery components inside the box, thereby improving the overall explosion-proof characteristics of the explosion-proof box equipment.

[0005] The technical solution adopted by this utility model is as follows: a double-layer explosion-proof box, including an outer box body with an open front and a door frame, a main box door is hinged to the door frame by a main door hinge, multiple top wiring ports are provided on the top of the outer box body and multiple bottom wiring ports are provided on the bottom; a supporting inner plate is provided inside the outer box body, the supporting inner plate is fixedly connected to the rear wall of the outer box body, multiple windows are provided at the lower part of the supporting inner plate, and a detachable inner box is installed in each window, the inner box includes an open front inner box body, the battery assembly is set inside the inner box body, an inner box cover with multiple inner box wiring ports is installed at the front end of the inner box body, a mounting base is provided on the upper part of the supporting inner plate, and multiple circuit breakers are installed on the mounting base.

[0006] Preferably, U-shaped retaining rings are provided inside the inner casing and on the upper and lower sides of the battery assembly, and the battery assembly is fixed in the middle of the inner cavity of the inner casing by two U-shaped retaining rings.

[0007] Preferably, an annular wing plate with multiple connecting holes is provided on the outer side of the front opening of the inner box, multiple connecting holes are provided at corresponding positions on the edge of the inner box cover, and multiple threaded holes are provided at corresponding positions on the inner support plate and around the window. The annular wing plate, the inner box cover, and the inner support plate of the inner box are fixedly connected by multiple screws.

[0008] Preferably, multiple threaded rods are installed on the rear wall of the outer casing, and connecting holes are provided at corresponding positions on the inner support plate. Each threaded rod is located in its respective connecting hole, and each threaded rod is provided with two lock nuts, one in front and one in back, located in front of and behind the inner support plate, respectively.

[0009] Preferably, the door frame is provided with multiple threaded holes, and the corresponding positions of the main door edge are provided with multiple connecting holes. After the main door is closed, it is fixedly connected to the door frame by multiple screws located in each set of threaded holes and connecting holes. A sealing gasket is provided between the door frame and the main door. A main door handle is also installed at the bottom of the main door.

[0010] Preferably, a doorway is provided at the top of the main door, and a secondary door is installed by a secondary door hinge. A transparent window is provided in the middle of the secondary door and is located in front of the circuit breaker. A secondary door lock is installed on the side of the secondary door. Multiple threaded holes are provided around the doorway, and multiple connecting holes are provided at corresponding positions on the edge of the secondary door. After the secondary door is closed, it is fixedly connected to the main door by multiple screws located in each set of threaded holes and connecting holes. A sealing gasket is provided between the secondary door and the main door.

[0011] Preferably, mounting plates are provided at the four corners of the back of the outer casing, and each mounting plate has a slot for bolt insertion.

[0012] The advantages and positive effects of this utility model are: This invention provides a double-layer explosion-proof enclosure. Compared with existing explosion-proof enclosures, the double-layer enclosure of this invention has an inner enclosure inside the outer enclosure, and the battery assembly is placed in the inner enclosure. This provides a double-layer explosion-proof effect for the battery assembly, improving the overall explosion-proof characteristics of the enclosure and meeting the stringent requirements of specific explosion-proof scenarios. By setting a supporting inner plate inside the outer enclosure and fixing the inner enclosure, its battery assembly, mounting base, and circuit breaker to the supporting inner plate, the stability of the components inside the enclosure is ensured, making it easy to install the inner enclosure, its battery assembly, and the circuit breaker inside the enclosure.

[0013] The inner casing wiring port on the inner casing improves the convenience of battery assembly wiring and ensures the inner casing is explosion-proof. The top and bottom wiring ports on the outer casing improve the convenience of wiring in this double-layer explosion-proof box and ensure the outer casing is explosion-proof. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 yes Figure 2 Schematic diagram of the AA section structure; Figure 4 yes Figure 2 A three-dimensional structural diagram of the inner box.

[0015] In the picture: 1. Mounting plate; 2. Outer casing; 3. Top wiring port; 4. Main door hinge; 5. Door frame; 6. Secondary casing door; 7. Secondary door lock; 8. Transparent window; 9. Main door handle; 10. Main casing door; 11. Secondary door hinge; 12. Circuit breaker; 13. Mounting base; 14. Inner casing; 14-1. Inner casing; 14-2. U-shaped spring clip; 14-3. Inner casing wiring port; 14-4. Inner casing cover; 15. Support inner plate; 16. Bottom wiring port; 17. Threaded rod; 18. Battery assembly. Detailed Implementation

[0016] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0017] Please see Figure 1 , Figure 2 and Figure 3 This utility model discloses a double-layer explosion-proof box, comprising an outer box body 2 with an open front and a door frame 5, and a main box door 10 hinged to the door frame 5 using a main door hinge 4. The main box door 10 can be opened and closed. In this embodiment, the door frame 5 has multiple threaded holes, and the corresponding positions on the edge of the main box door 10 have multiple connecting holes. After the main box door 10 is closed, it is fixedly connected to the door frame 5 using multiple screws located in the threaded holes and connecting holes. A sealing gasket is provided between the door frame 5 and the main box door 10. A main door handle 9 is also installed at the lower part of the main box door 10.

[0018] The purpose of setting a sealing gasket between the door frame 5 and the main box door 10 is to ensure the sealing characteristics of the main box door 10 after it is closed, and to ensure the explosion-proof effect of the outer box. The purpose of setting the main door handle 9 is to improve the ease of operation of opening and closing the door. After the main box door 10 is closed, screws are screwed into each set of threaded holes and connecting holes to fix the main box door 10 to the door frame 5. The sealing gasket is compressed to seal the gap between the main box door 10 and the door frame 5. When opening the door, the aforementioned screws need to be removed, and then the main box door 10 is opened by using the main door handle 9. The main box door 10 rotates to the other side around the main door hinge 4.

[0019] In this embodiment, mounting plates 1 are provided at the four corners of the back of the outer casing 2, and each mounting plate 1 has a slot for bolt insertion. When it is necessary to install and fix this double-layer explosion-proof box on a wall or bracket, the outer casing 2 is fixedly connected to the wall or bracket using bolts located in the slots of each mounting plate 1.

[0020] The outer casing 2 has multiple top cable entry ports 3 on the top and multiple bottom cable entry ports 16 on the bottom, each used for cable routing. Specifically, the top cable entry ports 3 and bottom cable entry ports 16 have the same structure, both including a threaded sleeve fixed to the outer casing 2 and a locking nut installed inside the sleeve port. A sealing filler is provided inside the sleeve, and a pressure ring is provided on the outside of the sealing filler. The pressure ring contacts the locking nut. The cable passes through the sleeve, the locking nut, the sealing filler, and the pressure ring. Then, the locking nut is rotated from the outside, which pushes the pressure ring. The pressure ring compresses the sealing filler, causing it to deform and seal the cable passage, ensuring an explosion-proof effect.

[0021] An inner support plate 15 is provided inside the outer casing 2, and the inner support plate 15 is fixedly connected to the rear wall of the outer casing 2. For example... Figure 2 and Figure 3 As shown, the outline shape of the inner support plate 15 is the same as the outline shape of the longitudinal section of the inner cavity of the outer housing 2. In this embodiment, a plurality of threaded rods 17 are installed on the rear wall of the outer housing 2, and connecting holes are provided at corresponding positions on the inner support plate 15. Each threaded rod 17 is located in its respective connecting hole, and each threaded rod 17 is provided with two locking nuts, one in front and one behind, respectively.

[0022] When installing and fixing the inner support plate 15, first install a lock nut on each threaded rod 17, then install the inner support plate 15, so that the ends of each threaded rod 17 pass through the corresponding connecting holes on the inner support plate 15. Then install another lock nut on each threaded rod 17, and each set of lock nuts clamps and fixes the inner support plate 15. By adjusting the position of each set of lock nuts on each threaded rod 17, the front and rear position of the inner support plate 15 within the inner cavity of the outer casing 2 can be set.

[0023] Multiple windows are provided at the lower part of the supporting inner plate 15, and a detachable inner box 14 is installed in each window. In the specific application shown in the figure, two windows are provided at the lower part of the supporting inner plate 15, and two inner boxes 14 are provided accordingly.

[0024] Please see Figure 3 and Figure 4 It can be seen that: The inner box 14 includes an inner box body 14-1 with an open front, the battery assembly 18 is disposed inside the inner box body 14-1, and an inner box cover 14-4 with multiple inner box wiring ports 14-3 is installed at the front end of the inner box body 14-1.

[0025] In this embodiment, U-shaped retaining rings 14-2 are provided inside the inner casing 14-1 and on the upper and lower sides of the battery assembly 18. The battery assembly 18 is fixed to the middle of the inner cavity of the inner casing 14-1 by two U-shaped retaining rings 14-2. Figure 3 As shown, when the battery assembly 18 is placed inside the inner housing 14-1, its rear end abuts against the rear wall of the inner housing 14-1. The upper and lower U-shaped retaining springs 14-2 clamp and fix the battery assembly 18 in the middle. The U-shaped retaining springs 14-2 not only play a fixing role, but also provide a certain shock absorption effect for the battery assembly.

[0026] The inner casing cable entry port 14-3 is used to pass cables connected to the battery assembly 18. Specifically, the inner casing cable entry port 14-3 includes a threaded sleeve fixed to the inner casing cover 14-4 and a locking nut installed in the sleeve port. A sealing filler is provided inside the sleeve, and a pressure ring is provided on the outside of the sealing filler. The pressure ring contacts the locking nut. The cable passes through the sleeve, the locking nut, the sealing filler, and the pressure ring. Then, the locking nut is rotated from the outside, which pushes the pressure ring. The pressure ring compresses the sealing filler, causing the sealing filler to deform and seal the cable passage, ensuring an explosion-proof effect.

[0027] In this embodiment, an annular wing plate with multiple connecting holes is provided on the outer side of the front opening of the inner box 14-1, multiple connecting holes are provided at corresponding positions on the edge of the inner box cover 14-4, and multiple threaded holes are provided at corresponding positions on the supporting inner plate 15 and around the window. The annular wing plate of the inner box 14-1, the inner box cover 14-4, and the supporting inner plate 15 are fixedly connected by multiple screws.

[0028] A mounting base 13 is provided on the upper part of the supporting inner plate 15, and multiple circuit breakers 12 are mounted on the mounting base 13. For example... Figure 2 As shown, the inner box 14 has two units on the left and right, and correspondingly, two circuit breakers 12 are also provided on the left and right. The mounting base 13 and the installation and fixing method of the circuit breakers 12 are the same as the existing installation structure in the electrical box, and will not be described in detail.

[0029] In this embodiment, a doorway is provided at the upper part of the main door 10, and a secondary door 6 is hinged to it using a secondary door hinge 11. A transparent window 8 is provided in the middle of the secondary door 6, and the transparent window 8 is located in front of the circuit breaker 12. The on / off status of the internal circuit breaker 12 can be observed through the transparent window 8. A secondary door lock 7 is installed on the side of the secondary door 6. Multiple threaded holes are provided around the doorway, and multiple connecting holes are provided at corresponding positions on the edge of the secondary door 6. After the secondary door 6 is closed, it is fixedly connected to the main door 10 using multiple screws located in each set of threaded holes and connecting holes. A sealing gasket is provided between the secondary door 6 and the main door 10.

[0030] The purpose of the sealing gasket is to ensure the sealing performance of the auxiliary door 6 after it is closed, thus ensuring the explosion-proof effect of the outer casing. After the auxiliary door 6 is closed, first operate the auxiliary door lock 7 to lock it. Screws are screwed into each set of threaded holes and connecting holes to fix the auxiliary door 6 to the main door 10. The sealing gasket is compressed to seal the gap between the main door 10 and the auxiliary door 6. To open the door, the aforementioned screws need to be removed. Then, operate the auxiliary door lock 7 to unlock and open the auxiliary door 6. The auxiliary door 6 rotates to the other side around the auxiliary door hinge 11.

Claims

1. A double-layer explosion-proof box, characterized in that: The outer casing (2) includes an open front section with a door frame (5). A main door (10) is hinged to the door frame (5) using a main door hinge (4). The outer casing (2) has multiple top wiring ports (3) at the top and multiple bottom wiring ports (16) at the bottom. Inside the outer casing (2) is a supporting inner plate (15), which is fixedly connected to the rear wall of the outer casing (2). Multiple windows are located at the bottom of the supporting inner plate (15). A removable inner box (14) is installed in each window. The inner box (14) includes an inner box body (14-1) with an open front. The battery assembly (18) is located inside the inner box body (14-1). An inner box cover (14-4) with multiple inner box wiring ports (14-3) is installed at the front end of the inner box body (14-1). A mounting base (13) is provided on the upper part of the supporting inner plate (15). Multiple circuit breakers (12) are installed on the mounting base (13).

2. The double-layer explosion-proof box as described in claim 1, characterized in that: Inside the inner box (14-1), U-shaped retaining rings (14-2) are provided on the upper and lower sides of the battery assembly (18). The battery assembly (18) is fixed in the middle of the inner cavity of the inner box (14-1) by two U-shaped retaining rings (14-2).

3. The double-layer explosion-proof box as described in claim 2, characterized in that: An annular wing plate with multiple connecting holes is provided on the outer side of the front opening of the inner box (14-1). Multiple connecting holes are provided at corresponding positions on the edge of the inner box cover (14-4). Multiple threaded holes are provided at corresponding positions on the supporting inner plate (15) and around the window. The annular wing plate, the inner box cover (14-4), and the supporting inner plate (15) of the inner box (14-1) are fixedly connected by multiple screws.

4. The double-layer explosion-proof box as described in claim 3, characterized in that: Multiple threaded rods (17) are installed on the rear wall of the outer casing (2). Connection holes are provided at corresponding positions on the inner support plate (15). Each threaded rod (17) is located in its respective connection hole. Each threaded rod (17) is provided with two lock nuts, one in front and one in back, and the two lock nuts are located in front of and behind the inner support plate (15) respectively.

5. The double-layer explosion-proof box as described in claim 4, characterized in that: Multiple threaded holes are provided on the door frame (5), and multiple connecting holes are provided at the corresponding positions on the edge of the main box door (10). After the main box door (10) is closed, multiple screws located in each set of threaded holes and connecting holes are used to fix it to the door frame (5). A sealing gasket is provided between the door frame (5) and the main box door (10). A main door handle (9) is also installed at the bottom of the main box door (10).

6. The double-layer explosion-proof box as described in claim 5, characterized in that: A doorway is provided at the top of the main door (10) and a secondary door (6) is installed by hinge (11). A transparent window (8) is provided in the middle of the secondary door (6) and the transparent window (8) is located in front of the circuit breaker (12). A secondary door lock (7) is installed on the side of the secondary door (6). Multiple threaded holes are provided around the doorway and multiple connecting holes are provided at the corresponding positions on the edge of the secondary door (6). After the secondary door (6) is closed, it is fixedly connected to the main door (10) by multiple screws located in each set of threaded holes and connecting holes. A sealing gasket is provided between the secondary door (6) and the main door (10).

7. The double-layer explosion-proof box as described in claim 6, characterized in that: Mounting plates (1) are provided at the four corners of the back of the outer casing (2), and each mounting plate (1) has a slot for bolts to be inserted.

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