Explosion-proof junction box

Abstract

The utility model relates to the field of explosion-proof junction boxes, in particular to an explosion-proof junction box, which comprises a junction box, a sealing cover part is arranged at the top of the junction box, a protection part is arranged at the top of the sealing cover part, the sealing cover part comprises a cover plate, a jack and a rubber pad, the jack is arranged in the middle of the top surface of the cover plate, and the protection part is arranged at the top of the cover plate. The protection part comprises a protection plate and an insertion rod, the insertion rod is fixedly installed at the bottom of the protection plate, the end, away from the protection plate, of the insertion rod is inserted into an inner cavity of the insertion hole, the junction box comprises an installation plate, and the rubber pad is embedded into the installation plate; the protection plate is arranged outside the cover plate, a protection layer is provided through the protection plate, external sand is blocked, the installation plate arranged on the box body is embedded into the rubber pad at the bottom of the cover plate, and the sealing performance between the installation plate and the rubber pad can be further enhanced.

Description

Technical Field

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

[0002] An explosion-proof junction box is an electrical connection device designed specifically for hazardous environments. It can effectively prevent explosions caused by electrical sparks or heat in flammable and explosive environments, such as hazardous areas or dusty places in mining, petroleum, chemical, pharmaceutical and other industries.

[0003] However, in existing junction boxes, bolts are generally used to connect the cover plate and the box body. There is a lack of a sealing mechanism between the cover plate and the box body, resulting in an insufficient seal between the two, which in turn causes the problem of dust entering the inner cavity of the box body. Utility Model Content

[0004] Based on the above description, the present invention provides an explosion-proof junction box to solve the problem of insufficient sealing of existing junction boxes.

[0005] The utility model solves the above technical problems with the following technical solutions: an explosion-proof junction box, comprising a junction box;

[0006] A sealing portion is provided on the top of the junction box, and a protective portion is provided on the top of the sealing portion;

[0007] The sealing portion includes a cover plate, a socket and a rubber pad, wherein the socket is provided in the middle of the top surface of the cover plate;

[0008] The protection part includes a protection plate and an insertion rod, wherein the insertion rod is fixedly mounted on the bottom of the protection plate, and an end of the insertion rod away from the protection plate is inserted into the inner cavity of the insertion hole;

[0009] The junction box includes a mounting plate, and the rubber pad is embedded in the mounting plate.

[0010] Furthermore, the junction box includes a box body and threaded holes, the threaded holes are opened on four sides of the top surface of the box body, and the mounting plate is fixedly connected to the inner wall of the box body.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the top view of the mounting plate is designed to be annular, and the cross section of the mounting plate is designed to be L-shaped.

[0013] Furthermore, the sealing portion also includes a receiving plate, an air guide tube and an airbag. The receiving plate is fixedly installed at the center of the bottom of the cover plate, and a groove is opened inside the receiving plate. The airbag is installed in the groove inside the receiving plate.

[0014] Further, the rubber pad is installed around the bottom of the cover plate. The air duct is installed at the bottom of the cover plate, and both ends of the air duct are respectively connected to the airbag and the rubber pad. The gas inside the airbag enters the inner cavity of the rubber pad through the air duct.

[0015] Further, the protection part further includes a stop block, which is fixedly installed on the side wall of the protection plate, and the stop block is integrally designed in a ring shape.

[0016] Further, the protection part further includes a rubber block, which is fixedly installed on the side wall of the insertion rod, and the side surface of the rubber block is designed as a convex arc.

[0017] Further, a clamping groove is formed on the inner wall of the insertion hole, and the inner cavity of the clamping groove is adapted to the arc of the rubber block. The rubber block is inserted into the insertion hole along with the insertion rod and then engaged with the clamping groove.

[0018] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0019] 1. By arranging a protection plate outside the cover plate in the present utility model, the protection plate is used to provide a protection layer to block the sand from the outside. The installation plate provided on the box body is fitted with the rubber pad at the bottom of the cover plate, which can further enhance the sealing performance between the two.

[0020] 2. By cooperating the insertion rod on the protection plate with the airbag on the cover plate, the rubber pad is inflated and expanded. The expanded rubber pad is used to fit the gap between the installation plate and the inner wall of the box body, further enhancing the sealing performance between the two and strengthening the protection effect against external dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an explosion-proof junction box provided by an embodiment of the present utility model; [[ID=X]] [[ID=Y]]

[0022] [[ID=Z]] Figure 2 is a schematic three-dimensional structure diagram of the whole in the present utility model;

[0023] Figure 3 is a schematic three-dimensional structure diagram of the box body in the present utility model;

[0024] Figure 4 is a schematic three-dimensional structure diagram of the sealing cover part in the present utility model;

[0025] Figure 5 is a schematic three-dimensional sectional structure diagram of the junction box in the present utility model.

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Junction box; 101. Box body; 102. Threaded hole; 103. Mounting plate; 2. Covering part; 201. Cover plate; 202. Jack; 203. Socket plate; 204. Air duct; 205. Rubber pad; 206. Airbag; 3. Protective part; 301. Protective plate; 302. Stopper; 303. Insert rod; 304. Rubber block. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0030] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0031] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the technical product is usually placed during use. It is only for the convenience of describing the present technology and simplifying the description, rather than indicating or implying 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 construed as a limitation on the present technology. In addition, "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Therefore, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0035] In the description of the present technology, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present technology can be understood according to specific circumstances.

[0036] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 , an explosion-proof junction box 1, including a junction box 1;

[0037] A cover part 2 is arranged on the top of the junction box 1, and a protection part 3 is arranged on the top of the cover part 2;

[0038] The cover part 2 includes a cover plate 201, a jack 202 and a rubber pad 205, and the jack 202 is opened in the middle of the top surface of the cover plate 201;

[0039] The protection part 3 includes a protection plate 301 and a plug rod 303. The plug rod 303 is fixedly installed at the bottom of the protection plate 301, and one end of the plug rod 303 away from the protection plate 301 is inserted into the inner cavity of the jack 202;

[0040] The junction box 1 includes a mounting plate 103, and a rubber gasket 205 is embedded in the mounting plate 103.

[0041] By embedding the rubber gasket 205 into the mounting plate 103, the sealing performance between the cover plate 201 and the box body 101 can be enhanced, preventing external dust from entering the inner cavity of the box body 101. At the same time, a protective plate 301 is added outside the cover plate 201 to further improve the protection performance and prevent external sand from entering the inner cavity of the box body 101.

[0042] Please refer to Figure 3 , the junction box 1 of this embodiment includes a box body 101 and threaded holes 102. The threaded holes 102 are opened around the top surface of the box body 101, and the mounting plate 103 is fixedly connected to the inner wall of the box body 101.

[0043] Threaded holes 102 are opened on the box body 101 to facilitate the cooperation with bolts to fixedly install the cover plate 201 onto the box body 101.

[0044] Please refer to Figure 1 , the top view surface of the mounting plate 103 of this embodiment is designed to be annular, and the cross-section of the mounting plate 103 is designed to be L-shaped.

[0045] The annular mounting plate 103 facilitates the embedding of the rubber gasket 205 to enhance the sealing performance between the box body 101 and the cover plate 201.

[0046] Please refer to Figure 2 , Figure 4 and Figure 5 , the sealing part 2 of this embodiment further includes a receiving plate 203, an air duct 204, and an airbag 206. The receiving plate 203 is fixedly installed at the center of the bottom of the cover plate 201, and a groove is opened inside the receiving plate 203. The airbag 206 is installed in the groove inside the receiving plate 203.

[0047] Please refer to Figure 2 , Figure 4 and Figure 5 , the rubber gasket 205 of this embodiment is installed around the bottom of the cover plate 201. The air duct 204 is installed at the bottom of the cover plate 201, and both ends of the air duct 204 are respectively connected to the airbag 206 and the rubber gasket 205. The gas inside the airbag 206 enters the inner cavity of the rubber gasket 205 through the air duct 204.

[0048] The air duct 204 connects the airbag 206 and the rubber gasket 205, allowing the gas inside the airbag 206 to enter the rubber gasket 205 through the air duct 204, so that the rubber gasket 205 bulges and fits more tightly with the mounting plate 103, increasing the sealing performance between the cover plate 201 and the box body 101.

[0049] Please refer to Figure 5 In this embodiment, the protection part 3 further includes a stopper 302. The stopper 302 is fixedly installed on the side wall of the protection plate 301, and the stopper 302 is integrally designed in a ring shape.

[0050] The stopper 302 is arranged on the side wall of the protection plate 301, and the stopper 302 provides a grip, so that it is convenient for the user to hold the stopper 302 to disassemble and install the protection plate 301.

[0051] Please refer to Figure 5 In this embodiment, the protection part 3 further includes a rubber block 304. The rubber block 304 is fixedly installed on the side wall of the insertion rod 303, and the side surface of the rubber block 304 is designed as a convex arc.

[0052] Please refer to Figure 5 In this embodiment, a clamping groove is formed in the inner wall of the jack 202, and the inner cavity of the clamping groove is adapted to the arc of the rubber block 304. The rubber block 304 is inserted into the jack 202 along with the insertion rod 303 and then engaged with the clamping groove.

[0053] The rubber block 304 is arranged on the insertion rod 303. The insertion rod 303 is inserted into the jack 202, so that the rubber block 304 is embedded into the clamping groove to fix the insertion rod 303 in the jack 202, completing the installation of the protection plate 301.

[0054] When installing the protection plate 301, the insertion rod 303 enters the jack 202. One end of the insertion rod 303 will pass through the jack 202 to squeeze the airbag 206, so that the gas inside the airbag 206 enters the rubber pad 205 through the air duct 204. At this time, the rubber pad 205 will expand to fit onto the mounting plate 103 and the inner wall of the box body 101, filling the gap between the two, thereby enhancing the sealing performance between the cover plate 201 and the box body 101.

[0055] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An explosion-proof junction box, comprising a junction box (1), characterized in that: A cover part (2) is arranged at the top of the junction box (1), and a protection part (3) is arranged at the top of the cover part (2); The cover part (2) includes a cover plate (201), a jack (202) and a rubber pad (205), and the jack (202) is opened in the middle of the top surface of the cover plate (201); The protection part (3) includes a protection plate (301) and a plug rod (303), the plug rod (303) is fixedly installed at the bottom of the protection plate (301), and one end of the plug rod (303) away from the protection plate (301) is inserted into the inner cavity of the jack (202); The junction box (1) includes a mounting plate (103), and the rubber pad (205) is embedded in the mounting plate (103).

2. An explosion-proof junction box according to claim 1, characterized in that, The junction box (1) includes a box body (101) and a threaded hole (102), the threaded hole (102) is opened around the top surface of the box body (101), and the mounting plate (103) is fixedly connected to the inner wall of the box body (101).

3. An explosion-proof junction box according to claim 2, characterized in that, The top view of the mounting plate (103) is designed to be annular, and the cross section of the mounting plate (103) is designed to be L-shaped.

4. An explosion-proof junction box according to claim 1, characterized in that, The cover part (2) further includes a receiving plate (203), a gas guide pipe (204) and an air bag (206), the receiving plate (203) is fixedly installed at the center of the bottom of the cover plate (201), and a groove is opened inside the receiving plate (203), and the air bag (206) is installed in the groove inside the receiving plate (203).

5. An explosion-proof junction box according to claim 4, characterized in that, The rubber pad (205) is installed around the bottom of the cover plate (201), the gas guide pipe (204) is installed at the bottom of the cover plate (201), and both ends of the gas guide pipe (204) are connected to the air bag (206) and the rubber pad (205) respectively, and the gas inside the air bag (206) enters the inner cavity of the rubber pad (205) through the gas guide pipe (204).

6. An explosion-proof junction box according to claim 1, characterized in that, The protection part (3) further includes a stopper (302), the stopper (302) is fixedly installed on the side wall of the protection plate (301), and the stopper (302) is designed to be annular as a whole.

7. An explosion-proof junction box according to claim 1, characterized in that, The protection part (3) further includes a rubber block (304), the rubber block (304) is fixedly installed on the side wall of the plug rod (303), and the side surface of the rubber block (304) is designed to be a convex arc.

8. An explosion-proof junction box according to claim 1, characterized in that, A clamping groove is opened on the inner wall of the jack (202), and the inner cavity of the clamping groove is adapted to the arc of the rubber block (304), and the rubber block (304) is inserted into the jack (202) along with the plug rod (303) and then clamped with the clamping groove.

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