Novel anti-explosion and anti-corrosion distribution box

Abstract

The utility model belongs to the technical field of explosion-proof distribution boxes, and relates to a novel explosion-proof anticorrosion distribution box, which comprises a seat body and a cover body, the outer surface of the top of the seat body is fixedly connected with an annular lower side edge, the upper surface of the lower side edge is fixedly provided with a first explosion-proof ring, and the inner wall of the first explosion-proof ring is fixedly provided with an annular inner ring edge. The interior of the cover body is fixedly connected with an annular upper side edge, and a second explosion-proof ring is fixedly arranged on the bottom surface of the upper side edge; when the cover body covers the seat body, the upper side edge and the lower side edge are tightly attached, and the inner wall of the second explosion-proof ring and the outer wall of the first explosion-proof ring are tightly attached. The explosion-proof cover has the advantages that the first explosion-proof ring and the second explosion-proof ring are arranged, when the cover body covers the seat body, the upper side edge and the lower side edge are tightly attached, the inner wall of the second explosion-proof ring and the outer wall of the first explosion-proof ring are tightly attached, and the joint of the cover body and the seat body is clamped through the first explosion-proof ring and the second explosion-proof ring, so that the joint is tightly connected to form an explosion-proof cavity; therefore, the anti-explosion performance of the anti-explosion and anti-corrosion distribution box is

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof distribution boxes and relates to a novel explosion-proof and corrosion-resistant distribution box. Background Art

[0002] Explosion-proof distribution boxes are explosion-proof distribution boxes, mainly including explosion-proof lighting distribution boxes, explosion-proof power distribution boxes, explosion-proof and anti-corrosion distribution boxes, etc. Explosion-proof distribution boxes are suitable for power distribution in flammable and explosive places such as petrochemical plants, oil platforms, chemical industry, pharmaceutical industry, coal mining, smelting, shipbuilding, military industry, and textile industry.

[0003] The existing explosion-proof distribution box is provided with an explosion-proof box body, a cover body, a first explosion-proof ring, and a second explosion-proof ring. The explosion-proof box body, the explosion-proof cover body and the explosion-proof mechanism are all made of aluminum alloy, and the first explosion-proof ring and the second explosion-proof ring are also made of aluminum alloy.

[0004] The distribution box is made of aluminum alloy. In an environment with highly corrosive gases, the corrosion resistance of the aluminum alloy is very poor, and the explosion-proof performance cannot be guaranteed during long-term use.

[0005] In order to solve the above problems, the utility model proposes a novel explosion-proof and corrosion-resistant distribution box. Utility Model Content

[0006] In order to solve the problems existing in the background technology, the utility model proposes a novel explosion-proof and corrosion-resistant distribution box.

[0007] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: comprising a base body and a cover body both made of SMC material, the outer surface of the top of the base body being fixedly connected to a ring-shaped lower side, the upper surface of the lower side being fixedly provided with a first explosion-proof ring, and the inner wall of the first explosion-proof ring being fixedly provided with an annular inner ring edge;

[0008] The bottom of the cover body is fixedly connected to a ring-shaped upper side, and a second explosion-proof ring is fixedly provided inside the upper side; when the cover body is covered on the base body, the upper side and the lower side are tightly fitted, and the inner wall of the second explosion-proof ring is tightly fitted to the outer wall of the first explosion-proof ring.

[0009] Furthermore, ejector holes are provided at the four corners of the upper side, and ejector pins are fixedly installed at the ejector pin holes. When the cover is opened, the ejector pins are twisted to make their bottom surfaces abut against the top surface of the lower side.

[0010] Furthermore, a first outer ring edge is fixedly connected to the outer surface of the first explosion-proof ring, and the four corners of the first outer ring edge are all fixedly connected to the first outer edge.

[0011] Furthermore, a second outer ring edge is fixedly connected to the outer surface of the second explosion-proof ring, and four corners of the second outer ring edge are fixedly connected to the second outer edges.

[0012] Furthermore, a plurality of first mounting holes are provided on the lower side, a plurality of second mounting holes are provided on the upper side, a plurality of first mounting sleeves are fixedly passed through the edge of the first outer ring, a plurality of second mounting sleeves are fixedly passed through the edge of the second outer ring, and the number of the first mounting holes, the second mounting holes, the first mounting sleeves, and the second mounting sleeves are equal. When the cover body is covered on the base body, the first mounting holes, the first mounting sleeves, the second mounting sleeves, and the second mounting holes correspond to each other one by one.

[0013] Furthermore, a plurality of transverse ribs and a plurality of longitudinal ribs are fixedly connected at intervals to the top surface of the inner cavity of the cover body, and the transverse ribs are perpendicular to the longitudinal ribs.

[0014] Furthermore, a plurality of arc-shaped reinforcement blocks are fixedly connected to the outer surface of the cover body at intervals.

[0015] Furthermore, a plurality of first reinforcing ribs are vertically provided on the inner cavity of the seat body, and a plurality of second reinforcing ribs are provided on the bottom of the outer wall of the seat body.

[0016] Furthermore, the first explosion-proof ring and the second explosion-proof ring are both made of aluminum alloy or stainless steel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The new explosion-proof and corrosion-resistant distribution box is provided with a first explosion-proof ring and a second explosion-proof ring. When the cover is placed on the base, the upper side and the lower side are tightly fitted, and the inner wall of the second explosion-proof ring and the outer wall of the first explosion-proof ring are tightly fitted. The first explosion-proof ring and the second explosion-proof ring are used to clamp the connection between the cover and the base to make the connection tight.

[0019] 2. The new explosion-proof and corrosion-resistant distribution box is provided with a first outer ring edge and a second outer ring edge. The first outer ring edge and the first outer edge cooperate to increase the contact area between the first explosion-proof ring and the lower side, thereby improving the firmness of the combination between the two; the second outer ring edge and the second outer edge cooperate to increase the contact area between the second explosion-proof ring and the upper side, thereby improving the firmness of the combination between the two.

[0020] 3. The new explosion-proof and corrosion-resistant distribution box is equipped with an inner ring edge, which makes the first explosion-proof ring and the base body more fully in contact and more secure.

[0021] 4. The new explosion-proof and corrosion-resistant distribution box has several arc-shaped reinforcement blocks fixedly connected at intervals on the outer surface of the cover. The reinforcement blocks improve the strength of the cover and also improve the aesthetics of the product.

[0022] 5. The new explosion-proof and corrosion-resistant distribution box has several transverse ribs and several longitudinal ribs fixedly connected at intervals on the top surface of the inner cavity of the cover. The transverse ribs and the longitudinal ribs are perpendicular to each other, further increasing the strength of the cover.

[0023] 6. The new explosion-proof and corrosion-resistant distribution box is equipped with a first explosion-proof ring and a second explosion-proof ring. Both the first explosion-proof ring and the second explosion-proof ring are made of aluminum alloy or stainless steel. Customers can choose the material according to the use environment. The stainless steel explosion-proof ring is less likely to corrode in the case of long-term use and frequent power outages and cover openings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0025] Figure 2 It is an exploded view of the utility model;

[0026] Figure 3 This is a schematic structural diagram of the seat body of the utility model;

[0027] Figure 4 This is a schematic structural diagram of the first explosion-proof ring in the utility model;

[0028] Figure 5 This is a schematic structural diagram of the second explosion-proof ring in the present utility model;

[0029] Figure 6 This is a schematic structural diagram of the cover body of the present invention;

[0030] Figure 7 This is a schematic structural diagram of the first outer ring edge in the present utility model;

[0031] Figure 8 This is a schematic structural diagram of the connection between the seat body and the first explosion-proof ring in the utility model;

[0032] Figure 9 It is a structural schematic diagram of the connection between the second explosion-proof ring and the cover body in the utility model.

[0033] In the figure: 1. base; 101. first reinforcing rib; 102. first mounting hole; 103. lower side; 104. second reinforcing rib; 2. first explosion-proof ring; 201. first outer ring edge; 202. inner ring edge; 203. first outer edge; 204. first mounting sleeve; 3. second explosion-proof ring; 301. second outer ring edge; 302. second outer edge; 303. second mounting sleeve; 4. cover; 401. reinforcing block; 402. transverse rib column; 403. longitudinal rib column; 404. ejector pin hole; 405. second mounting hole; 406. upper side. DETAILED DESCRIPTION

[0034] 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.

[0035] like Figures 1-9 As shown, the technical solution adopted by the present invention is as follows: a novel explosion-proof and corrosion-resistant distribution box, comprising a base 1 and a cover 4, both made of SMC. An annular lower side 103 is fixedly connected to the outer surface of the top of the base 1. The top surface of the lower side 103 is spaced apart from the top surface of the base 1. A first explosion-proof ring 2 is fixedly mounted on the upper surface of the lower side 103, the top surface of the first explosion-proof ring 2 being flush with the top surface of the base 1.

[0036] The inner wall of the first explosion-proof ring 2 is fixedly provided with an annular inner ring edge 202, so that the first explosion-proof ring 2 and the base body 1 are in more complete contact and have better firmness.

[0037] A first outer rim 201 is fixedly connected to the outer surface of the first explosion-proof ring 2. First outer edges 203 are fixedly connected to the four corners of the first outer rim 201. Both the first outer rim 201 and the first outer edges 203 are embedded within the lower side 103. The cooperation between the first outer rim 201 and the first outer edges 203 increases the contact area between the first explosion-proof ring 2 and the lower side 103, improving the secure connection between the two.

[0038] The bottom of the cover body 4 is fixedly connected with an annular upper side 406 .

[0039] There are ejector holes 404 at the four corners of the upper side 406, and an ejector pin is fixedly installed at the ejector hole 404. The ejector pin and the ejector hole 404 are threadedly connected. When the cover body 4 is opened, the ejector pin is screwed so that its bottom surface rests on the top surface of the lower side 103, thereby facilitating the disassembly of the cover body 4.

[0040] A second explosion-proof ring 3 is fixedly installed inside the upper side 406 .

[0041] A second outer rim 301 is fixedly connected to the outer surface of the second explosion-proof ring 3. Second outer edges 302 are fixedly connected to the four corners of the second outer rim 301. Both the second outer rim 301 and the second outer edge 302 are embedded within the upper side 406. The cooperation between the second outer rim 301 and the second outer edge 302 increases the contact area between the second explosion-proof ring 3 and the upper side 406, improving the secure connection between the two.

[0042] When the cover 4 is placed on the base 1, the upper side 406 and the lower side 103 fit tightly together, and the inner wall of the second explosion-proof ring 3 fits tightly together with the outer wall of the first explosion-proof ring 2. The first explosion-proof ring 2 and the second explosion-proof ring 3 engage the connection between the cover 4 and the base 1, making the connection tight.

[0043] Several first mounting holes 102 are defined on the lower side 103. Several second mounting holes 405 are defined on the upper side 406. Several first mounting sleeves 204 are fixedly inserted through the first outer ring rim 201. Several second mounting sleeves 303 are fixedly inserted through the second outer ring rim 301. The number of first mounting holes 102, second mounting holes 405, first mounting sleeves 204, and second mounting sleeves 303 is equal. When the cover 4 is placed on the base 1, the first mounting holes 102, first mounting sleeves 204, second mounting sleeves 303, and second mounting holes 405 correspond one to one.

[0044] Bolts are sequentially passed through the first mounting hole 102 , the first mounting sleeve 204 , the second mounting sleeve 303 , and the second mounting hole 405 , thereby fixing the base body 1 and the cover body 4 together.

[0045] The top surface of the inner cavity of the cover body 4 is fixedly connected with a plurality of transverse ribs 402 and a plurality of longitudinal ribs 403 at intervals. The transverse ribs 402 and the longitudinal ribs 403 are perpendicular to each other. The transverse ribs 402 and the longitudinal ribs 403 penetrate each other to increase the strength of the cover body 4.

[0046] The outer surface of the cover body 4 is fixedly connected with a plurality of arc-shaped reinforcement blocks 401 at intervals. The reinforcement blocks 401 improve the strength of the cover body 4 and also improve the aesthetics of the finished product.

[0047] A signal light is built into the cover 4. The built-in signal light reduces the contact area with the air and is more stable in a corrosive environment than an external explosion-proof signal light.

[0048] The inner cavity of the base body 1 is vertically provided with a plurality of first reinforcing ribs 101. The bottom of the outer wall of the base body 1 is provided with a plurality of second reinforcing ribs 104, which increase the strength of the base body 1 and also increase the contact area between the bottom of the base body 1 and the air.

[0049] The first explosion-proof ring 2 and the second explosion-proof ring 3 are both made of aluminum alloy or stainless steel. Customers can choose the material according to the use environment. The stainless steel explosion-proof ring is less susceptible to corrosion in long-term use and frequent power outages and cover openings.

[0050] The first explosion-proof ring 2 and the second explosion-proof ring 3 shall meet the minimum width and maximum clearance of the enclosure joint surface of Class II C enclosures on page 12 of "GB3836-2021 Explosive atmospheres - Part 2: Equipment protected by flameproof enclosures 'd'". The width of the inner explosion-proof ring is changed accordingly according to the volume. When the effective volume V is 500 cm² < V ≤ 500 cm² and the inner explosion-proof ring is greater than 25 mm, the clearance between the outer wall of the first explosion-proof ring 2 and the inner wall of the second explosion-proof ring 3 shall be less than 0.15 mm. When the effective volume V is 500 cm² < V ≤ 500 cm² and the inner explosion-proof ring is greater than 40 mm, the clearance between the outer wall of the first explosion-proof ring 2 and the inner wall of the second explosion-proof ring 3 shall be less than 0.2 mm.

[0051] Working principle:

[0052] During use, the first explosion-proof ring 2 is installed on the top of the lower side 103 through SMC molding process. The first outer ring edge 201, the first outer edge 203, and the first mounting sleeve 204 are all embedded inside the lower side 103. The inner ring edge 202 is in contact with the seat body 1.

[0053] The second explosion-proof ring 3 is installed on the bottom of the upper side 406 through SMC molding process. The second outer ring edge 301, the second outer edge 302, and the second mounting sleeve 303 are all embedded inside the upper side 406.

[0054] The cover body 4 is placed on the seat body 1 until the upper side 406 and the lower side 103 are closely fitted, and the inner wall of the second explosion-proof ring 3 and the outer wall of the first explosion-proof ring 2 are closely fitted.

[0055] At this time, the first mounting hole 102, the second mounting hole 405, the first mounting sleeve 204, and the second mounting sleeve 303 correspond to each other one by one. Screws are used to pass through the first mounting hole 102, the first mounting sleeve 204, the second mounting sleeve 303, and the second mounting hole 405 in sequence, so as to fix the seat body 1 and the cover body 4 together.

[0056] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new explosion-proof and corrosion-resistant distribution box, characterized in that: The invention comprises a base body (1) and a cover body (4) both made of SMC material, wherein the outer surface of the top of the base body (1) is fixedly connected with an annular lower side (103), the upper surface of the lower side (103) is fixedly provided with a first explosion-proof ring (2), and the inner wall of the first explosion-proof ring (2) is fixedly provided with an annular inner ring edge (202); The bottom of the cover body (4) is fixedly connected to an annular upper side (406), and a second explosion-proof ring (3) is fixedly arranged inside the upper side (406); when the cover body (4) is covered on the base body (1), the upper side (406) and the lower side (103) are tightly fitted, and the inner wall of the second explosion-proof ring (3) and the outer wall of the first explosion-proof ring (2) are tightly fitted.

2. The novel explosion-proof and corrosion-resistant distribution box according to claim 1 is characterized in that: The four corners of the upper side (406) are each provided with an ejector hole (404), and an ejector pin is fixedly installed at the ejector hole (404). When the cover (4) is opened, the ejector pin is twisted so that its bottom surface abuts against the top surface of the lower side (103).

3. The novel explosion-proof and corrosion-resistant distribution box according to claim 1 is characterized in that: The outer surface of the first explosion-proof ring (2) is fixedly connected to a first outer ring edge (201), and the four corners of the first outer ring edge (201) are all fixedly connected to a first outer edge (203).

4. The novel explosion-proof and corrosion-resistant distribution box according to claim 3 is characterized by: The outer surface of the second explosion-proof ring (3) is fixedly connected to a second outer ring edge (301), and the four corners of the second outer ring edge (301) are all fixedly connected to second outer edges (302).

5. The novel explosion-proof and corrosion-resistant distribution box according to claim 4 is characterized in that: A plurality of first mounting holes (102) are provided on the lower side (103), a plurality of second mounting holes (405) are provided on the upper side (406), a plurality of first mounting sleeves (204) are fixedly passed through the first outer ring edge (201), a plurality of second mounting sleeves (303) are fixedly passed through the second outer ring edge (301), the number of the first mounting holes (102), the second mounting holes (405), the first mounting sleeves (204), and the second mounting sleeves (303) are equal, and when the cover body (4) is covered on the base body (1), the first mounting holes (102), the first mounting sleeves (204), the second mounting sleeves (303), and the second mounting holes (405) correspond to each other.

6. The novel explosion-proof and corrosion-resistant distribution box according to claim 1 is characterized in that: The top surface of the inner cavity of the cover body (4) is fixedly connected with a plurality of transverse ribs (402) and a plurality of longitudinal ribs (403) at intervals, and the transverse ribs (402) and the longitudinal ribs (403) are perpendicular.

7. The novel explosion-proof and corrosion-resistant distribution box according to claim 1 is characterized in that: The outer surface of the cover body (4) is fixedly connected with a plurality of arc-shaped reinforcement blocks (401) at intervals.

8. The novel explosion-proof and corrosion-resistant distribution box according to claim 1 is characterized in that: A plurality of first reinforcing ribs (101) are vertically provided in the inner cavity of the seat body (1), and a plurality of second reinforcing ribs (104) are provided at the bottom of the outer wall of the seat body (1).

9. The novel explosion-proof and corrosion-resistant distribution box according to claim 1 is characterized in that: The first explosion-proof ring (2) and the second explosion-proof ring (3) are both made of aluminum alloy or stainless steel.

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