Explosion-proof lighting distribution box

Abstract

An explosion-proof lighting distribution box comprises a box body, the box body is provided with a group of main cavities and two groups of auxiliary cavities symmetrically distributed on two sides of the main cavities, each group of main cavities and auxiliary cavities is provided with two main cavity covers covering the box body, and the main cavity covers are provided with control switches which are located outside the box body and used for controlling opening and closing of circuit breakers. An auxiliary cavity cover body covering the box body is arranged at the position of the auxiliary cavity, first wire inlets are formed in the upper end and the lower end of the main cavity, wire outlets are formed in the upper end or the lower end of the auxiliary cavity, a plurality of connecting wires are connected to the wiring terminal, and the connecting wires penetrate out of the auxiliary cavity through the wire outlets and penetrate into the main cavity through the first wire inlets to be connected with the circuit breaker. And the first wire inlet is filled with a filler for sealing the first wire inlet. The beneficial effects of the utility model lie in that the main cavity and the auxiliary cavity are connected in a sealed manner by using the sealing filler, so that better sealing performance and explosion-proof effect can be ensured, and meanwhile, the positions of the passing connecting wires can be fixed, so that the wires can be arranged orderly.

Description

Technical Field

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

[0002] The distribution box is an electronic device that reasonably distributes electrical energy, facilitates the opening and closing of circuits, has a high level of safety protection, and can intuitively display the conduction status of the circuit. Explosion-proof distribution box is a type of distribution box with explosion-proof performance, mainly including explosion-proof lighting distribution box, explosion-proof power distribution box, explosion-proof and anti-corrosion distribution box, etc.

[0003] Publication number CN209001409U discloses an explosion-proof power distribution box, which includes a first box body, a protective cover is provided at the upper end of the first box body, a lampshade is provided on the surface of the first box body, an indicator light is provided inside the lampshade, a connection box is provided at the lower end of the first box body, the lower end of the connection box is connected to a second box body, a safety cover is provided on the surface of the second box body, a through hole is provided on the surface of the safety cover, a switch button is provided inside the second box body, a handle is provided below the switch button, a circuit breaker is provided at the bottom end of the handle, a bus port is provided on one side of the second box body, and a mounting frame is provided on the side of the second box body away from the safety cover.

[0004] The above solution solves the problem that the existing distribution box is prone to explosion to a certain extent, but the solution still has many shortcomings. For example, the first box body and the second box body are connected by a connecting box, and the sealing of the connecting box is insufficient, and it is still easy to come into contact with explosive gas and cause explosion. Utility Model Content

[0005] The utility model aims to solve the above-mentioned shortcomings of the prior art and provides an explosion-proof lighting distribution box to solve the above-mentioned problems.

[0006] The utility model adopts a technical solution to solve the technical problem: the explosion-proof lighting distribution box comprises a box body, the box body comprises a main cavity for arranging a circuit breaker, and two groups of sub-cavities symmetrically distributed on both sides of the main cavity and for arranging wiring terminals, each group of main cavities and each group of sub-cavities have two, the main cavity and the corresponding sub-cavity are connected by bolts, a main cavity cover body covering the box body is arranged at the main cavity, a control switch located outside the box body and used for controlling the opening and closing of the circuit breaker is arranged on the main cavity cover body, a sub-cavity cover body covering the box body is arranged at the sub-cavity, first line inlets are arranged at the upper and lower ends of the main cavity, a line outlet is arranged at the upper or lower end of the sub-cavity, a plurality of connecting wires are connected to the wiring terminals, and the connecting wires pass through the sub-cavity from the line outlet and pass through the main cavity from the first line inlet to be connected with the circuit breaker, and the first line inlet is filled with a filler for sealing the first line inlet with glue.

[0007] For further improvement, a first slot is provided on the main cavity cover body, and a first sealing ring is provided in the first slot.

[0008] Further improvement, the control switch includes a panel, a handle, and a fork shaft. The panel is fixed to the outer surface of the main cavity cover body by bolts, the handle is arranged on the panel and can rotate, the fork shaft is arranged in the main cavity cover body and one end is connected to the handle and the other end is connected to a connecting arm. A swingable switch is arranged on the circuit breaker, and the opening and closing of the switch is controlled by the connecting arm.

[0009] For further improvement, a through hole for the shift fork shaft to pass through is provided on the main cavity cover body, a sealing sleeve is inserted in the through hole, and the shift fork shaft rotates in the sealing sleeve.

[0010] For further improvement, the sub-cavity is provided with a protrusion on the outer side of the box body to limit the final covering position of the sub-cavity cover body in the box body, and the sub-cavity cover body is provided with a second slot for the protrusion to be inserted therein, and the second slot is provided with a second sealing ring for covering the protrusion therein.

[0011] For further improvement, two second line inlets are provided at the bottom of the box body for the power-carrying wires to enter the corresponding sub-cavities and be connected to the wiring terminals. The second line inlets are provided with introduction units in the box body for the power-carrying wires to pass through, and the introduction units are sealed and connected to the power-carrying wires.

[0012] To be further improved, the introduction unit includes an upper column tube and a lower support column. The upper column tube is set at the bottom of the box body by bolts and has an enclosing wall inside. The enclosing wall has a step configuration and obtains a first insertion space and a second insertion space defined within the enclosing wall. The first insertion space is used to insert the sealing sleeve, and the second insertion space is used to insert the lower support column and utilizes the step configuration to prevent the lower support column from entering the first insertion space and squeezing the sealing sleeve.

[0013] The beneficial effects of the utility model are:

[0014] The utility model uses a sealing filler to seal the main cavity and the auxiliary cavity to ensure better sealing and explosion-proof effects, that is, the filler is 8501 glue, which can provide sufficient adhesion and sealing, and can also fix the position of the connecting wires passing through, so that the wiring is orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a half-section structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the partial cross-sectional structure of AA of the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged schematic diagram of part B;

[0018] Figure 4 For this utility model Figure 2 A partial enlarged schematic diagram of part C in the middle;

[0019] Figure 5 For this utility model Figure 2 A partial enlarged schematic diagram of part D in the middle. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Referring to the accompanying drawings: This explosion-proof lighting distribution box includes a box body 1, which has a main cavity 11 for arranging a circuit breaker, and two groups of secondary cavities 12 symmetrically distributed on both sides of the main cavity 11 and for arranging wiring terminals. Each group of main cavities 11 and each group of secondary cavities 12 have two, and the main cavity 11 and the corresponding secondary cavity 12 are connected by bolts. The main cavity 11 is provided with a main cavity cover 2 covering the box body 1, and the main cavity cover 2 is provided with a device located outside the box 1 and used to control the opening and closing of the circuit breaker. The control switch 3 is provided at the sub-cavity 12, and the sub-cavity cover body 4 covering the box body 1 is provided. The upper and lower ends of the main cavity 11 are provided with a first wire inlet 11-a, and the upper or lower end of the sub-cavity 2 is provided with a wire outlet 12-a. A number of connecting wires are connected to the wiring terminal, and the connecting wires pass through the sub-cavity 12 from the wire outlet 12-a and pass through the main cavity 11 from the first wire inlet 11-a to connect with the circuit breaker. The first wire inlet 11-a is filled with a filler for gluing the first wire inlet 11-a. The principle of the utility model is that a filler filled in the first wire inlet 11-a is provided between the main cavity 11 and the sub-cavity 12, and the filler is 8501 glue. The glue can provide sufficient adhesion and sealing, so as to ensure better sealing and explosion-proof effects, and at the same time, the position of the connecting wires passing through can be fixed, so that the wiring is orderly.

[0022] A first slot 21 is provided on the main cavity cover body 2, and a first sealing ring 5 is provided in the first slot 21. Because the contact surface of the main cavity cover body 2 when it is covered on the box body 1 is an explosion-proof surface, sealing measures are indispensable. Therefore, the first slot 21 is provided on the contact surface between the main cavity cover body 2 and the box body 1, and the position of the first slot 21 is located at the edge of the main cavity 11, and then the first sealing ring 5 is provided in the first slot 21, so that when the main cavity cover body 2 contacts the contacted surface of the box body 1, the first sealing ring 5 is in contact with the contacted surface at the same time, and the contact generates a force to squeeze the first sealing ring 5, thereby increasing the sealing effect of the first sealing ring 5 and avoiding leakage inside the main cavity 11.

[0023] The control switch 3 includes a panel 31, a handle 32, and a fork shaft 33. The panel 31 is fixed to the outer surface of the main cavity cover body 2 by bolts. The handle 32 is arranged on the panel 31 and can rotate. The fork shaft 33 is arranged in the main cavity cover body 2 and one end is connected to the handle 32 and the other end is connected to the connecting arm 6. A swingable switch 7 is arranged on the circuit breaker, and the opening and closing of the switch 7 is controlled by the connecting arm 6. The panel 31 not only provides a setting position for the handle 32, but also has a prompt effect, that is, an open or closed prompt mark is arranged on the panel 31. The handle 32 is not only a grasping part for the user, but also a connecting part connected to the fork shaft 33, so that when the handle 32 rotates, the fork shaft 33 also rotates synchronously. A connecting arm 6 for contacting the switch 7 on the circuit breaker is arranged on the fork shaft 33, that is, the left and right swing of the connecting arm 6 is used to drive the switch 7 to swing up and down.

[0024] A through hole 22 is provided on the main cavity cover body 2 for the fork shaft 33 to pass through, and a sealing sleeve 22-a is inserted in the through hole 22. The fork shaft 33 rotates in the sealing sleeve 22-a. Since the through hole 22 is for the fork shaft 33 to pass through, explosion-proof sealing measures between the fork shaft 33 and the through hole 22 are also indispensable. Therefore, a sealing sleeve 22-a is provided in the through hole 22, and a sealed connection with the fork shaft 33 is achieved through the sealing sleeve 22-a, thereby avoiding leakage inside the main cavity 11.

[0025] The sub-cavity 12 is provided with a protrusion 12-b on the outer surface of the box body 1 to limit the final covering position of the sub-cavity cover body 4 on the box body 1, and the sub-cavity cover body 4 is provided with a second slot 41 for the protrusion 12-b to be inserted therein, and the second slot 41 is provided with a second sealing ring 8 for covering the protrusion 12-b therein. Because the contact surface of the sub-cavity cover body 4 when covering the box body 1 is an explosion-proof surface, sealing measures are indispensable. Therefore, the protrusion 12-b is provided on the outer surface of the box body 1, and the contact surface of the sub-cavity cover body 4 in contact with the box body 1 is provided with a second sealing ring 8. A second slot 41 is provided on the upper side for the protrusion 12-b to be inserted into, and the position of the second slot 41 is located at the edge of the sub-cavity 12, and then a second sealing ring 8 is provided in the second slot 21, so that when the main cavity cover body 2 contacts the contacted surface of the box body 1, the second sealing ring 5 contacts the contacted surface at the same time, and generates a force to squeeze the first sealing ring 5 through the contact, thereby increasing the sealing effect of the first sealing ring 5, and also increasing the insertion stability of the protrusion 12-b in the second slot 41, thereby avoiding leakage inside the sub-cavity 12.

[0026] The bottom of the box body 1 is provided with two second wire inlets 13 for the powered wires to enter the corresponding sub-cavities 12 and be connected to the wiring terminals. The second wire inlets 13 are provided with introduction units 9 for the powered wires to pass through on the box body 1. The introduction unit 9 is sealed and connected to the powered wires, so that the second wire inlets 13 are sealed, thereby avoiding leakage inside the sub-cavity 12 and can also be used as a bottom support of the box body 1.

[0027] The introduction unit 9 includes an upper column barrel 91 and a lower support column 92. The upper column barrel 91 is arranged at the bottom of the box body 1 by bolts and has an enclosing wall 91-a inside. The enclosing wall 91-a is in a step configuration and obtains a first insertion space 91-a1 and a second insertion space 91-a2 defined within the enclosing wall 91-a. The first insertion space 91-a1 is used to place the sealing sleeve 10, and the second insertion space 91-a2 is used to place the lower support column 92 and use the step configuration to prevent the lower support column 92 from entering the first insertion space 91-a1 and squeezing the sealing sleeve 10. The upper column barrel 91, the lower support column 92, and the sealing sleeve 10 are all for the passage of the energized wire. The cylinder 91 provides a space for inserting the lower support column 92 and a space for the sealing sleeve 10 to be therein, namely a first insertion space 91-a1 and a second insertion space 91-a2, and the two parts of the space form a step configuration due to the difference in size. The purpose of this arrangement is that the lower support column 92 will not extend into the first insertion space 91-a1 after entering, so that it can produce good stability when serving as the bottom support of the box body 1. The sealing sleeve 10 is provided with a butt plate 101 extending to the second insertion space 91-a2, and the butt plate 101 is respectively abutted against the sealing sleeve 10 and the lower support column 92, so that the sealing sleeve 10 is squeezed and deformed, thereby improving the sealing effect.

[0028] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An explosion-proof lighting distribution box, comprising a box body (1), the box body (1) having a main cavity (11) for arranging a circuit breaker, and two groups of secondary cavities (12) symmetrically distributed on both sides of the main cavity (11) and for arranging wiring terminals, each group of main cavities (11) and each group of secondary cavities (12) having two, the main cavity (11) and the corresponding secondary cavity (12) being connected by bolts, characterized in that: The main cavity (11) is provided with a main cavity cover (2) covering the box body (1), and the main cavity cover (2) is provided with a control switch (3) located outside the box body (1) and used to control the opening and closing of the circuit breaker. The secondary cavity (12) is provided with a secondary cavity cover (4) covering the box body (1). The upper and lower ends of the main cavity (11) are both provided with a first wire inlet (11-a), and the upper or lower end of the secondary cavity (12) is both provided with a wire outlet (12-a). A plurality of connecting wires are connected to the wiring terminal, and the connecting wires pass out of the secondary cavity (12) from the wire outlet (12-a) and pass into the main cavity (11) from the first wire inlet (11-a) to be connected to the circuit breaker. The first wire inlet (11-a) is filled with a filler for sealing the first wire inlet (11-a).

2. The explosion-proof lighting distribution box according to claim 1 is characterized in that: The main cavity cover (2) is provided with a first slot (21), and a first sealing ring (5) is provided in the first slot (21).

3. The explosion-proof lighting distribution box according to claim 1 is characterized in that: The control switch (3) comprises a panel (31), a handle (32), and a fork shaft (33); the panel (31) is fixed to the outer surface of the main chamber cover (2) by bolts; the handle (32) is arranged on the panel (31) and is rotatable; the fork shaft (33) is arranged in the main chamber cover (2) and one end is connected to the handle (32) and the other end is connected to a connecting arm (6); a swingable switch (7) is arranged on the circuit breaker, and the opening and closing of the switch (7) is controlled by the connecting arm (6).

4. The explosion-proof lighting distribution box according to claim 3 is characterized in that: The main cavity cover body (2) is provided with a through hole (22) for the shift fork shaft (33) to pass through, a sealing sleeve (22-a) is inserted into the through hole (22), and the shift fork shaft (33) rotates in the sealing sleeve (22-a).

5. The explosion-proof lighting distribution box according to claim 1 is characterized in that: The auxiliary cavity (12) is provided with a protrusion (12-b) on the outer side surface of the box body (1) for limiting the final covering position of the auxiliary cavity cover body (4) on the box body (1), and the auxiliary cavity cover body (4) is provided with a second slot (41) for the protrusion (12-b) to be inserted therein, and the second slot (41) is provided with a second sealing ring (8) for covering the protrusion (12-b) therein.

6. The explosion-proof lighting distribution box according to claim 1 is characterized in that: The bottom of the box body (1) is provided with two second wire inlets (13) for the power-carrying wires to enter the corresponding sub-cavities (12) and be connected to the wiring terminals. The second wire inlets (13) are provided on the box body (1) with introduction units (9) for the power-carrying wires to pass through. The introduction units (9) are sealedly connected to the power-carrying wires.

7. The explosion-proof lighting distribution box according to claim 6 is characterized in that: The introduction unit (9) includes an upper column tube (91) and a lower support column (92). The upper column tube (91) is arranged at the bottom of the box body (1) by bolts and has an enclosing wall (91-a) inside. The enclosing wall (91-a) is in a step configuration and is defined by a first insertion space (91-a1) and a second insertion space (91-a2) within the enclosing wall (91-a). The first insertion space (91-a1) is used to insert the sealing sleeve (10), and the second insertion space (91-a2) is used to insert the lower support column (92) and utilizes the step configuration to prevent the lower support column (92) from entering the first insertion space (91-a1) and squeezing the sealing sleeve (10).

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