Explosion-proof junction box with high sealing performance

Abstract

The utility model discloses an explosion-proof junction box with high sealing performance. The explosion-proof junction box comprises a junction box body and a box cover, a plurality of junction boxes are arranged at the bottom end of the inner side of the junction box body side by side, wire passing holes are correspondingly formed in the side walls, corresponding to the two ends of each junction box, of the junction box body, a sliding groove is formed in the side wall of the lower side of each wire passing hole, and the upper end of each sliding groove is communicated with the wire passing holes in the corresponding side; each sliding groove is internally provided with a movable installation plate arranged in the length direction of the sliding groove, and the upper end of each movable installation plate is provided with a plurality of sealing blocks which are used in cooperation with the wire passing holes and can seal the wire passing holes. When no wire is connected in the wire passing hole, the sealing block moves into the wire passing hole to seal the wire passing hole, and external dust cannot enter the interior of the wiring box body. When a wire is connected in the wire passing hole, the sealing block can be pushed into the wire passing hole and can be compressed due to the fact that the soft material block has elasticity, and other positions of the wire passing hole can be still blocked by the sealing block.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof junction box structures, in particular to a highly sealed explosion-proof junction box. Background Art

[0002] Explosion-proof junction boxes are specialized power distribution equipment used in various high-risk locations. Compared to civilian junction boxes, they undergo various explosion-proof modifications to create explosion-proof distribution boxes. They must be fully exposed to the elements during use. If the box's seal is poor, dust can enter the air when used in dusty environments, potentially posing an explosion hazard.

[0003] For example, Chinese patent CN215772401U discloses an explosion-proof junction box, whose switch assembly can isolate the incoming or outgoing conduits that do not require wiring from the external flammable and explosive environment, avoiding fire or explosion caused by the wiring terminals inside the junction box contacting flammable and explosive materials, protecting the circuit, and effectively reducing the probability of accidents. It is suitable for use in chemical and other places with fire and explosion hazards.

[0004] However, while this junction box can seal unconnected inlet pipes, it cannot seal the pipes that have connected wires. This creates a gap between the inner wall of the pipe and the wires inside. Dust from the outside air can still enter the junction box through this gap, posing a safety hazard. Therefore, it is necessary to improve the structure of the current junction box. Utility Model Content

[0005] The purpose of the present utility model is to provide a highly sealed explosion-proof junction box to solve the technical problem proposed in the above-mentioned background technology that there is a gap between the inner wall of the incoming pipe through which the wires are connected and the wires inside it, and dust in the external air can still enter the junction box through the gap, thus still posing a safety hazard.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A highly sealed explosion-proof junction box comprises a junction box body and a box cover, wherein the box cover is mounted on the upper end of the junction box body;

[0008] A plurality of junction boxes are arranged side by side at the bottom inner end of the junction box body, and a wire-passing hole is correspondingly provided on the side wall of the junction box body corresponding to the two ends of each junction box, and a sliding groove is respectively provided on the side wall on the lower side of the wire-passing hole, and the upper end of each sliding groove is communicated with the plurality of wire-passing holes on the corresponding side, and a movable mounting plate arranged along the length direction of the sliding groove is provided in each sliding groove, and a plurality of sealing blocks that are used in conjunction with the wire-passing holes and can close the wire-passing holes are provided on the upper end of the movable mounting plate, and a soft material block is provided on the upper part of the sealing block, and a longitudinal sliding rod is respectively connected to both sides of the lower end of the movable mounting plate, and the part of the longitudinal sliding rod located in the sliding groove is sleeved with a spring, and the lower end of the longitudinal sliding rod passes through the junction box body;

[0009] Two support frames are symmetrically fixedly connected to the left and right ends of the lower side of the junction box; each support frame is a square cavity structure, and a transverse long hole is provided on the upper side. The lower end of the longitudinal sliding rod on the corresponding side is inserted into the square cavity structure of the support frame through the transverse long hole and connected to the bottom pulling block provided along the length direction of the square cavity structure;

[0010] Each of the support frames is an openable and closable structure.

[0011] Among them, each of the support frames includes a fixing part fixedly connected to the lower end of the junction box body and an openable and closable door body, the upper end of the fixing part is provided with the transverse long hole, the outer opening of which is hingedly connected to the openable and closable door body, and the fixing part and the openable and closable door body are respectively provided with a first magnetic block and a second magnetic block for use in conjunction with each other.

[0012] Wherein, a handle is provided on the openable and closable door body on the same side as the second magnetic block.

[0013] The sealing block is a square block, the size and shape of which are consistent with the wire hole, and comprises a rubber block and the soft material block. A square groove is provided on the upper part of the rubber block, and the soft material block is provided in the square groove.

[0014] Wherein, the soft material block is a sponge block.

[0015] Wherein, the sealing block is bonded to the movable mounting plate.

[0016] Wherein, the upper end surface of the junction box body and the lower end surface of the box cover are respectively provided with a lower sealing groove and an upper sealing groove in corresponding positions, and the lower sealing groove and the upper sealing groove are connected by a sealing strip for sealing.

[0017] Wherein, the sealing strip is made of rubber.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In this technical solution, the sealing block can move up and down in the sliding groove and the wire hole. When no wires are connected in the wire hole, the elastic force of the spring pushes the movable mounting plate to move the sealing block into the wire hole, sealing the wire hole so that external dust cannot enter the interior of the wiring box through the wire hole. When wires are connected in the wire hole, the sealing block will also be pushed into the wire hole. Since the soft material block is elastic and can be compressed, the sealing block will be compressed and depressed at the position where the wires are in contact, while the other positions of the wire hole are still blocked by the sealing block, so that external dust still cannot enter the interior of the wiring box, thereby ensuring that dust will not enter the wiring box after wiring, and there is no safety hazard.

[0020] In addition, when the box cover is installed to the upper end of the junction box, the gap between the junction box and the box cover can be sealed by placing the sealing strip in the upper sealing groove and the lower sealing groove, preventing dust in the external air from entering the junction box through the gap between the junction box and the box cover, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the explosion-proof junction box provided by the utility model;

[0022] Figure 2 A schematic diagram of the internal structure of the explosion-proof junction box provided by the utility model;

[0023] Figure 3 A schematic diagram of the box cover structure provided by the utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the explosion-proof junction box provided by the present invention;

[0025] Figure 5 This is a structural diagram of the support frame of the present utility model;

[0026] Figure 6 for Figure 4 A magnified view of point A;

[0027] Figure 7 This is a structural schematic diagram of the sealing block provided by the utility model.

[0028] In the figure: 1. Junction box body; 2. Box cover; 3. Support frame; 401. Junction box; 402. Movable mounting plate; 403. Sealing block; 4031. Rubber block; 4032. Sponge block; 404. Longitudinal sliding rod; 405. Spring; 406. Openable and closable door body; 407. First magnetic block; 408. Second magnetic block; 409. Handle; 410. Bottom pull block; 411. Horizontal long hole; 5. Sealing strip. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood broadly. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set, and can refer to direct connection or indirect connection. Those skilled in the art can understand the specific meanings of the above terms in this patent based on specific circumstances.

[0032] See also Figure 1-Figure 7 The figure shows an embodiment structure provided by the present utility model.

[0033] This embodiment provides a highly sealed explosion-proof junction box, comprising a junction box body 1 and a box cover 2, wherein the box cover 2 is mounted on the upper end of the junction box body 1;

[0034] A plurality of junction boxes 401 are arranged side by side at the bottom inner end of the junction box 1, and a wire-passing hole is correspondingly provided on the side wall of the junction box 1 corresponding to the two ends of each junction box 401, and a sliding groove is respectively provided on the side wall on the lower side of the wire-passing hole, and the upper end of each sliding groove is communicated with the plurality of wire-passing holes on the corresponding side, and a movable mounting plate 402 is provided in each sliding groove along the length direction of the sliding groove, and a plurality of sealing blocks 403 are provided on the upper end of the movable mounting plate 402 for use in conjunction with the wire-passing hole and capable of closing the wire-passing hole, and a soft material block is provided on the upper part of the sealing block 403, and a longitudinal sliding rod 404 is respectively connected to both sides of the lower end of the movable mounting plate 402, and the part of the longitudinal sliding rod 404 located in the sliding groove is sleeved with a spring 405, and the lower end thereof passes through the junction box 1;

[0035] Two support frames 3 are symmetrically fixedly connected to the left and right ends of the lower side of the junction box 1; each support frame 3 is a square cavity structure, and a transverse long hole 411 is provided on its upper side. The lower end of the longitudinal sliding rod 404 on the corresponding side is inserted into the square cavity structure of the support frame 3 through the transverse long hole 411 and connected to the bottom pulling block 410 provided along the length direction of the square cavity structure;

[0036] Each of the support frames 3 is an openable and closable structure.

[0037] Working principle: When wiring the junction box 401 inside the junction box 1, first pull the handle 409 at the outer end of the openable and closable door 406 to open the openable and closable door 406, and then pull down the bottom pulling block 410 inside the support frame 3, thereby driving the longitudinal sliding rod 404, the movable mounting plate 402, and the sealing block 403 to move downward, so that the wire hole is opened, and the wire is passed through the wire hole to the junction box 401 for wiring. Afterwards, release the bottom pulling block 410, and under the action of the spring, the longitudinal sliding rod 404, the movable mounting plate 402, and the sealing block 403 move upward, and the sealing block 403 moves back into the wire hole. The position where the sealing block 403 contacts the wiring is compressed to produce a depression, and the wire hole is re-closed. After the wiring of the junction box 401 is completed, place the sealing strip 5 in the lower sealing groove at the upper end of the junction box 1, and then use bolts to fix the box cover 2 to the upper end of the junction box 1. The upper sealing groove corresponds to the lower sealing groove, and the upper part of the sealing strip 5 enters the upper sealing groove to completely seal the interior of the junction box 1.

[0038] Preferably, each of the support frames 3 includes a fixed portion fixedly connected to the lower end of the junction box body 1 and an openable and closable door body 406, the upper end of the fixed portion is provided with the transverse long hole 411, the outer opening of which is hingedly connected to the openable and closable door body 406, and the fixed portion and the openable and closable door body 406 are respectively provided with a first magnetic block 407 and a second magnetic block 408 for use in conjunction with each other.

[0039] When in use, the openable and closable door 406 can be opened. After use, the fixing portion and the openable and closable door 406 can be closed by the first magnetic block 407 and the second magnetic block 408.

[0040] Preferably, a handle 409 is provided on the openable and closable door body 406 on the same side as the second magnetic block 408 , and the openable and closable door body 406 can be opened conveniently by using the handle.

[0041] Preferably, the sealing block 403 is a square block, the size and shape of which are consistent with the wire hole, and includes a rubber block 4031 and the soft material block. The rubber block 4031 is provided with a square groove on its upper portion, and the soft material block is provided in the square groove. The soft material block is a sponge block 4032.

[0042] Preferably, the sealing block 403 is bonded to the movable mounting plate 402 .

[0043] Preferably, the upper end surface of the junction box 1 and the lower end surface of the box cover 2 are respectively provided with a lower sealing groove and an upper sealing groove in corresponding positions, and the lower sealing groove and the upper sealing groove are connected by a sealing strip 5 for sealing. The sealing strip 5 is made of rubber.

[0044] It should be noted that the sealing strip 5 is used to seal the gap between the junction box 1 and the box cover 2 to prevent dust in the external air from entering the junction box 1 through the gap between the junction box 1 and the box cover 2 .

[0045] In addition, the junction box body 1 is connected to the box cover 2 by bolts.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly sealed explosion-proof junction box, characterized in that: It comprises a junction box body (1) and a box cover (2), wherein the box cover (2) is mounted on the upper end of the junction box body (1); A plurality of junction boxes (401) are arranged side by side at the bottom inner end of the junction box (1), and a wire-passing hole is correspondingly provided on the side wall of the junction box (1) at both ends of each junction box (401), and a sliding groove is respectively provided on the side wall below the wire-passing hole, and the upper end of each sliding groove is communicated with the plurality of wire-passing holes on the corresponding side, and a movable mounting plate (402) is provided in each sliding groove along the length direction of the sliding groove, and a plurality of sealing blocks (403) are provided on the upper end of the movable mounting plate (402) for use in conjunction with the wire-passing holes and capable of closing the wire-passing holes, and a soft material block is provided on the upper part of the sealing block (403), and a longitudinal sliding rod (404) is respectively connected to both sides of the lower end of the movable mounting plate (402), and the portion of the longitudinal sliding rod (404) located in the sliding groove is sleeved with a spring (405), and the lower end thereof passes through the junction box (1); Two support frames (3) are symmetrically fixedly connected to the left and right ends of the lower side of the junction box (1); each support frame (3) is a square cavity structure, and a transverse long hole (411) is provided on the upper side thereof, and the lower end of the longitudinal sliding rod (404) on the corresponding side is inserted into the square cavity structure of the support frame (3) through the transverse long hole (411) and connected to the bottom pulling block (410) provided along the length direction of the square cavity structure; Each of the support frames (3) is an openable and closable structure.

2. The highly sealed explosion-proof junction box according to claim 1, characterized in that: Each of the support frames (3) comprises a fixing portion fixedly connected to the lower end of the junction box body (1) and an openable and closable door body (406); the upper end of the fixing portion is provided with the transverse long hole (411), the outer opening of which is hingedly connected to the openable and closable door body (406); and the fixing portion and the openable and closable door body (406) are respectively provided with a first magnetic block (407) and a second magnetic block (408) for use in conjunction with each other.

3. The highly sealed explosion-proof junction box according to claim 2, characterized in that: A handle (409) is provided on the openable and closable door body (406) on the same side as the second magnetic block (408).

4. The highly sealed explosion-proof junction box according to claim 3, characterized in that: The sealing block (403) is a square block, and its size and shape are consistent with the wire hole. It includes a rubber block (4031) and the soft material block. The rubber block (4031) is provided with a square groove on its upper part, and the soft material block is provided in the square groove.

5. The highly sealed explosion-proof junction box according to claim 4, characterized in that: The soft material block is a sponge block (4032).

6. The highly sealed explosion-proof junction box according to claim 5, characterized in that: The sealing block (403) is bonded to the movable mounting plate (402).

7. The highly sealed explosion-proof junction box according to claim 6, characterized in that: The upper end surface of the junction box body (1) and the lower end surface of the box cover (2) are respectively provided with a lower sealing groove and an upper sealing groove at corresponding positions, and the lower sealing groove and the upper sealing groove are connected by a sealing strip (5) for sealing.

8. The highly sealed explosion-proof junction box according to claim 7, characterized in that: The sealing strip (5) is made of rubber.

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