阅读说明：本技术 防爆防腐蚀接线盒 (Explosion-proof and corrosion-proof junction box ) 是由 陈华方 谢耀辉 李正雄 李羊羊 于 2021-09-24 设计创作，主要内容包括：本发明公开了一种防爆防腐蚀接线盒,包括盒体和设置在其内的接线排；盒体包括矩形盒框,设置在矩形盒框前、后框口的前盖板、后盖板,矩形盒框的上横板、下横板上分别设置有用于电线穿入的空心圆柱形上进线柱、下进线柱,的后盖板、上进线柱、下进线柱与矩形盒框为一体结构；上横板上设置有用于检修的检修部,所述下横板的上板面上设置有用于固定电线的固定部。本发明实现了接线盒的整体密封,使得本申请的接线盒密封性好,尤其是适用于丙类以上等级库房,达到了防爆防腐蚀的目的。在两上接线柱之间设有检修口,便于接线盒的检修和维护,增加了接线盒的使用寿命。同时,本发明结构设计合理,操作简便,实用性强。(The invention discloses an explosion-proof and corrosion-proof junction box, which comprises a box body and a wiring bar arranged in the box body; the box body comprises a rectangular box frame, a front cover plate and a rear cover plate which are arranged at the front and rear frame openings of the rectangular box frame, wherein a hollow cylindrical upper wire inlet column and a hollow cylindrical lower wire inlet column which are used for wires to penetrate are respectively arranged on an upper transverse plate and a lower transverse plate of the rectangular box frame, and the rear cover plate, the upper wire inlet column and the lower wire inlet column are integrated with the rectangular box frame; the upper transverse plate is provided with an overhauling part for overhauling, and the upper plate surface of the lower transverse plate is provided with a fixing part for fixing the electric wire. The invention realizes the integral sealing of the junction box, so that the junction box has good sealing performance, is particularly suitable for storehouses of more than class C, and achieves the purposes of explosion prevention and corrosion prevention. An access hole is formed between the two binding posts, so that the junction box is convenient to overhaul and maintain, and the service life of the junction box is prolonged. Meanwhile, the invention has reasonable structural design, simple and convenient operation and strong practicability.)

1. An explosion-proof and corrosion-proof junction box comprises a box body and a junction bar arranged in the box body; the method is characterized in that: the box body comprises a rectangular box frame, a front cover plate and a rear cover plate which are arranged at the front frame opening and the rear frame opening of the rectangular box frame, wherein a hollow cylindrical upper wire inlet column and a hollow cylindrical lower wire inlet column which are used for wires to penetrate are respectively arranged on an upper transverse plate and a lower transverse plate of the rectangular box frame, and the rear cover plate, the upper wire inlet column and the lower wire inlet column are integrated with the rectangular box frame; the upper transverse plate is provided with an overhauling part for overhauling, and the upper plate surface of the lower transverse plate is provided with a fixing part for fixing the electric wire.

2. The explosion-proof and corrosion-proof junction box of claim 1, wherein the two upper wiring posts are arranged on the upper cross plate at intervals; the maintenance portion includes:

the access opening is formed in the upper cross plate between the two upper wire inlet posts and is a step opening with a large upper part and a small lower part;

the movable sealing plate is matched with the step opening and used for closing or opening the access opening;

the pressing mechanism is arranged on the upper plate surface of the movable sealing plate and used for pressing the movable sealing plate in the step opening.

3. The explosion proof and corrosion resistant junction box of claim 2, wherein the compression mechanism comprises: horizontal slip sets up briquetting on the activity shrouding is symmetrical to briquetting perpendicular central line sets up the flexible positioning mechanism of level in the briquetting left and right sides, the left and right sides flexible positioning mechanism of level structure is the same, includes:

and one end of the horizontal screw rod is fixedly connected with the push plate, the other end of the horizontal screw rod extends into the pressing block and is vertically and downwards screwed with a threaded knob arranged on the pressing block, and the threaded knob drives the horizontal screw rod to move left and right in a reciprocating manner by rotating.

4. The explosion proof and corrosion resistant junction box of claim 3, wherein the side of the push plate relative to the upper terminal post is a curved surface conforming to the curvature of the outer surface of the upper terminal post.

5. The explosion-proof and corrosion-proof junction box according to claim 1 or 2, wherein: the fixed part is for setting up the positioning mechanism of inlet wire post left and right sides down, the left and right sides the positioning mechanism structure is the same, including the fixed block, the fixed block is fixed with pressure spring towards inlet wire post one side down, pressure spring is provided with the roof towards the tip of inlet wire post down, the roof is the arc unanimous with inlet wire post surface radian down.

6. The explosion-proof and corrosion-proof junction box according to claim 1 or 2, wherein: and the rear cover plate is provided with a screw hole for fixing and disassembling the explosion-proof and anti-corrosion junction box.

Technical Field

The invention relates to an electrical accessory junction box in the field of electric appliances, in particular to an explosion-proof and corrosion-proof junction box.

Background

The traditional electric wire consists of a conducting wire and an insulating sheath; when the electric wire is arranged, when the circuit is longer or the corner is needed, the junction box is often needed to be used for transition, namely: the insulating sheath is fixed with the junction box, and the lead is connected with the wiring terminal in the junction box, so that the effects of protecting the electric wire and preventing the human body from electric shock are achieved.

Aiming at the problems of corrosion of toxic gases such as pesticides in storehouses of more than class C and the like to electric circuits, particularly copper; therefore, when the electric wires are arranged in the storehouse of class C or above, and the insecticidal gas needs to be sprayed, the used junction box has the functions of corrosion prevention and explosion prevention so as to prevent the corrosion of toxic gas. At present, the arrangement of wires in a storehouse of more than class C adopts an open laying mode matched with a common junction box or a commercially available explosion-proof junction box. The common junction box has general sealing performance, particularly for corrosive gas or dust environments, the common junction box is easy to be invaded into a junction box gap by gas, so that the insulation of a lead is reduced or a box body is corroded, the common junction box needs to be frequently overhauled, and a circuit needs to be replaced when the common junction box is serious. Most of the commercially available explosion-proof junction boxes are metal shells, the tolerance to toxic gas is limited, and the shells of the explosion-proof junction boxes are easy to permeate gas and are not easy to overhaul and maintain under the toxic gas environment for a long time.

Disclosure of Invention

The invention aims to provide an explosion-proof and corrosion-proof junction box suitable for storehouses of more than class C.

In order to achieve the purpose, the invention can adopt the following technical scheme:

the explosion-proof and corrosion-proof junction box comprises a box body and a junction bar arranged in the box body; the box body comprises a rectangular box frame, a front cover plate and a rear cover plate which are arranged at the front frame opening and the rear frame opening of the rectangular box frame, wherein a hollow cylindrical upper wire inlet column and a hollow cylindrical lower wire inlet column which are used for wires to penetrate are respectively arranged on an upper transverse plate and a lower transverse plate of the rectangular box frame, and the rear cover plate, the upper wire inlet column and the lower wire inlet column are integrated with the rectangular box frame; the upper transverse plate is provided with an overhauling part for overhauling, and the upper plate surface of the lower transverse plate is provided with a fixing part for fixing the electric wire.

Preferably, the number of the upper wire feeding columns is two, and the two upper wire feeding columns are arranged on the upper transverse plate at intervals; the maintenance portion includes:

the access opening is formed in the upper cross plate between the two upper wire inlet posts and is a step opening with a large upper part and a small lower part;

the movable sealing plate is matched with the step opening and used for closing or opening the access opening;

the pressing mechanism is arranged on the upper plate surface of the movable sealing plate and used for pressing the movable sealing plate in the step opening.

Further, the pressing mechanism includes: horizontal slip sets up briquetting on the activity shrouding is symmetrical to briquetting perpendicular central line sets up the flexible positioning mechanism of level in the briquetting left and right sides, the left and right sides flexible positioning mechanism of level structure is the same, includes:

and one end of the horizontal screw rod is fixedly connected with the push plate, the other end of the horizontal screw rod extends into the pressing block and is vertically and downwards screwed with a threaded knob arranged on the pressing block, and the threaded knob drives the horizontal screw rod to move left and right in a reciprocating manner by rotating.

Preferably, the side face of the push plate relative to the upper wire inlet column is an arc face which is consistent with the radian of the outer surface of the upper wire inlet column.

Preferably, the fixed part is for setting up the positioning mechanism of inlet wire post left and right sides down, the left and right sides the positioning mechanism structure is the same, including the fixed block, the fixed block is fixed with pressure spring towards inlet wire post one side down, pressure spring is provided with the roof towards the tip of lower inlet wire post, the roof is the arc unanimous with inlet wire post surface radian down.

Furthermore, the rear cover plate is provided with a screw hole for fixing and disassembling the explosion-proof and corrosion-proof junction box.

The advantages of the invention are embodied in the following aspects:

the rear cover plate, the upper wire inlet column, the lower wire inlet column and the rectangular box frame are of an integrated structure, asphalt anti-corrosion paint or vacuum sealing mud is filled between the insulating sheath of the wire and the upper wire inlet column and between the insulating sheath of the wire and the lower wire inlet column when the terminal box is used, the integral sealing of the terminal box is achieved, the terminal box is good in sealing performance, and the purposes of explosion prevention and corrosion prevention are achieved.

And 2, an access hole is formed between the two binding posts, so that the junction box is convenient to overhaul and maintain, and the service life of the junction box is prolonged.

3, the invention has reasonable structural design, simple and convenient operation and strong practicability, and is particularly suitable for storehouses with more than class C grades and application scenes needing frequent spraying of pesticide and other medicaments.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the present invention showing a use state of the front cover plate.

Fig. 3 is a schematic structural diagram of the pressing mechanism of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. As shown in fig. 1-3, the explosion-proof and corrosion-proof junction box of the invention comprises a box body and a wiring row 1 arranged in the box body, wherein the wiring row 1 can be arranged in two or more rows and is separated by an insulating strip 2; the box body comprises a rectangular box frame 3, a front cover plate 4 and a rear cover plate 5 which are arranged at the front and rear frame openings of the rectangular box frame 3, two hollow cylindrical upper wire inlet columns 7.1 and 7.2 and a hollow cylindrical lower wire inlet column 8 which are used for an electric wire 6 to penetrate through are respectively arranged on an upper transverse plate and a lower transverse plate of the rectangular box frame 3, and the rear cover plate 5, the upper wire inlet columns 7.1 and 7.2, the lower wire inlet column 8 and the rectangular box frame 3 are of an integral structure; and a screw hole is formed in the rear cover plate 5 and used for fixing and disassembling the explosion-proof and anti-corrosion junction box.

The outer surface of the box body is coated with a Linear Low Density Polyethylene (LLDPE) outer layer, so that the box body has excellent environmental stress cracking resistance and electrical insulation, and higher heat resistance, impact resistance, puncture resistance and the like.

The maintenance portion that is used for overhauing is provided with on the last diaphragm of rectangle box frame 3, and maintenance portion is including seting up the access hole that is located between two last terminal posts 7.1, 7.2, and the access hole is big-end-up's step mouth, is equipped with the sealing washer of being made by low density polyethylene material in the step mouth, and step mouth assorted activity shrouding 9 lock is on the step mouth, and activity shrouding 9 is used for sealing or opening the access hole, and activity shrouding 9 adopts the low density polyethylene material to make.

The upper plate surface of the movable sealing plate 9 is provided with a pressing mechanism for pressing the movable sealing plate 9 in the step opening; as shown in fig. 3, the pressing mechanism includes:

horizontal slip sets up briquetting 10 on movable seal board 9, is symmetrical to the horizontal telescopic positioning mechanism of 10 left and right sides settings of briquetting 10 perpendicular central lines 11 settings of briquetting, and two horizontal telescopic positioning mechanism structures about, are the same, include:

a push plate 13 is fixed at one end of the horizontal screw 12, the other end of the horizontal screw 12 extends into the pressing block 10 and is vertically screwed with a threaded knob 14 vertically and downwards arranged on the pressing block 10, and the horizontal screw 12 is driven to reciprocate left and right by rotating the threaded knob 14, so that the structure is stable and reliable, and the operability is strong; the side of the push plate 13 relative to the upper wire inlet column is an arc surface consistent with the radian of the outer surface of the upper wire inlet column so as to improve the contact area with the upper wire inlet column.

Be provided with the fixed part of fixed electric wire 6 on the lower diaphragm of rectangle box frame 3 for fixed electric wire 6 that gets into in the terminal box avoids the electric wire to make a round trip to rock in the box body, reduces rocking of electric wire on wiring row 1, guarantees the stability that electric wire 6 connects.

As shown in fig. 2, the fixing portion is a positioning mechanism disposed on the left side and the right side of the lower wire inlet post 8, the positioning mechanism on the left side and the right side has the same structure, and includes a fixing block 15, the fixing block 15 is fixed with a pressure spring 16 toward one side of the lower wire inlet post 8, the end portion of the pressure spring 16 toward the lower wire inlet post 8 is provided with a top plate 17, and the top plate 17 is an arc plate consistent with the outer surface radian of the lower wire inlet post 8, so as to improve the contact area with the electric wire 6 entering the box body.

In practical use, asphalt anti-corrosion paint 18 or vacuum sealing mud is poured between the insulating sheath of the lead 6 and the upper and lower incoming line columns 7.1, 7.2 and 8, so that the integral sealing of the junction box is realized.