CN201910986U - Explosion-proof case for central control device used in environment with explosive gas - Google Patents

Abstract

The utility model discloses an explosion-proof case for a central control device used in an environment with explosive gas, which comprises an explosion-proof front cover. A sealing ring is arranged on a combined surface of the explosion-proof front cover with the peripheral wall of a case body, the case body consists of a main case body and an interface case body by means of combination, the interface case body is disposed on the rear of the main case body, inserting slots are fixed to the left lateral wall, the right lateral wall and the bottom wall of the main case body, a horizontal supporting plate and a longitudinal partition plate which are inserted in the inserting slots in a sliding manner divide the main case body into a plurality of chambers which are communicated with each other, and connecting terminal plates, input and output terminals of electric appliances and grounding indicating panels are disposed in the interface case body. The explosion-proof case has the advantages that the explosion-proof case provides a small underground environment for safe operation of the central control device in a coal mine, namely, the operating environment of the central control device is separated from an underground severe external environment, and the explosion-proof case is explosion-preventive, waterproof and dustproof, is reasonable in internal layout and meets the requirement of underground operational safety.

Description

Flameproof enclosures for central control units used in explosive atmospheres

technical field

The utility model relates to a protective box body, in particular to a flameproof box body used for a central control device used in an explosive gas environment.

Background technique

With the improvement of the country's requirements for coal mine safety production and high-efficiency automation, the demand for central control devices for underground equipment is also increasing. Due to the special explosive gas environment underground, the industrial control devices with conventional structures cannot be used safely in this environment.

Contents of the invention

The purpose of this utility model is to provide an explosion-proof box for the central control device used in the explosive gas environment. The explosion-proof box can isolate the working environment of the central control device from the harsh underground environment and ensure its safety. running.

In order to achieve the above object, the utility model can take the following technical solutions:

The explosion-proof box of the central control device used in the explosive gas environment described in the utility model includes an explosion-proof front cover, and a sealing ring is arranged on the joint surface of the explosion-proof front cover and the four walls of the box body, so that The box body is composed of a main box body and an interface box body arranged at the rear of the main box body; slots are fixed on the left and right side walls and the bottom wall of the main box body, and are slidably inserted into the slots The main box body is divided into a plurality of interconnected chambers by the horizontal support plate and the longitudinal isolation plate; the connection terminal board, the input and output interface of the electrical device and the grounding indicator board are arranged in the interface box.

Both the horizontal support plate and the longitudinal isolation plate are provided with fish-eye holes; while supporting and isolating electrical components, they can dissipate heat well without overlapping pressure.

Two cooling fans with opposite rotation directions are arranged on the longitudinal separation plate; it is ensured that local overheating will not occur in the entire main box cavity.

The main box is provided with a power supply chamber, a mainboard chamber, a component chamber and a display driver board chamber; it can effectively save space and the wiring is relatively neat; the mainboard in the mainboard chamber is fixed in a drawer type, which is convenient for installing and maintaining the mainboard; The circuit fixing device is arranged in the cavity of the main board, which can neatly fix the circuit in the cavity of the main board, and reduce the friction of the circuit and the damage of the connector part.

The upper top of the main box is provided with a suspension ring, and the lower bottom is provided with a support.

The utility model has the advantage that the central control device used in the underground explosive gas environment adopts the explosion-proof structure composed of the main box body and the interface box body, and the sealing ring set on the joint surface of the front cover and the box body is at the same time of explosion-proof It can also prevent water and moist air from entering the box and causing damage to electrical components; the horizontal support plate and longitudinal isolation plate in the main box divide the main box into multiple interconnected chambers (such as power supply cavity, main board cavity, component cavity, etc.) Device cavity and display drive board cavity, etc.), can effectively use the space, do not produce pressure overlap, and at the same time the wiring is relatively neat; the interface box set at the rear of the main box can make all the lines come in and out, which is convenient for wiring and inspection, ensuring Safe to run. The utility model will provide a small environment for the central control device to operate safely in the underground of the coal mine, that is, to isolate the working environment of the central control device from the harsh external environment of the underground, and it is also waterproof and dustproof while being explosion-proof, and the appearance is small and compact. The internal layout is reasonable, which meets the safety requirements of underground operation.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic cross-sectional structural view of the main box in Fig. 1 .

FIG. 3 is a schematic view of the right view of FIG. 1 .

Detailed ways

As shown in Figures 1, 2, and 3, the flameproof box for the central control device used in the explosive gas environment described in the utility model includes a flameproof front cover 1, and the flameproof front cover 1 and the box body The joint surface of the four walls is provided with a sealing ring, which can prevent water and moist air from entering the inside of the box and causing damage to the electrical components while being flameproof; the box is composed of the main box 2 and the rear of the main box 2 The interface box 3 at the top of the main box 2 is combined, the upper top of the main box 2 is provided with a suspension ring 13, and the lower bottom is provided with a support 14; the left and right side walls and the bottom wall of the main box 2 are fixed with slots 4a, 4b, 5, the horizontal support plate 6 and the longitudinal isolation plate 7 slidably inserted in the slot divide the main box body 2 into a plurality of interconnected chambers, the horizontal support plate 6 and the longitudinal isolation plate Fish-eye holes are evenly distributed on the top 7, and two cooling fans 12 with opposite rotation directions are arranged on the longitudinal separation plate 7, which can support and isolate the electrical components and at the same time can dissipate heat well without overlapping pressure; The interface box 3 is provided with a terminal board 8, an input and output interface 9 of an electrical device, and grounding indicator boards 10, 11, so that all lines can be accessed from here, which is convenient for wiring and inspection, and ensures safe operation.

The main box is provided with a power supply chamber, a mainboard chamber, a component chamber and a display driver board chamber; it can effectively save space and the wiring is relatively neat; the mainboard in the mainboard chamber is fixed in a drawer type, which is convenient for installing and maintaining the mainboard; The main board cavity is provided with a circuit fixing plate, which can neatly fix the circuit in the main board cavity, and reduce the friction of the circuit and the damage of the connector part.

Claims (5)

1. A flameproof box for a central control device used in an explosive gas environment, including a flameproof front cover (1), and the joint surface of the flameproof front cover (1) and the four walls of the box is provided with The sealing ring is characterized in that: the box is composed of the main box (2) and the interface box (3) arranged at the rear of the main box (2); the left and right sides of the main box (2) Slots (4a, 4b, 5) are fixed on the side wall and the bottom wall, and the horizontal support plate (6) and the longitudinal isolation plate (7) slidingly inserted in the slot divide the main box body (2) into A plurality of interconnected chambers; the interface box (3) is provided with terminal boards (8), input and output interfaces (9) of electrical devices, and grounding indicator boards (10, 11). 2. The flameproof box for the central control device used in the explosive gas environment according to claim 1, characterized in that: the horizontal support plate (6) and the longitudinal isolation plate (7) are evenly distributed with Fisheye hole. 3. The explosion-proof box for the central control device used in the explosive gas environment according to claim 1, characterized in that: the longitudinal isolation plate (7) is provided with two cooling fans (12 in opposite directions of rotation) ). 4. The explosion-proof box for the central control device used in the explosive gas environment according to claim 1, characterized in that: the main box (2) is provided with a power supply cavity, a main board cavity, and a component cavity and a display driver board cavity; a circuit fixing device is arranged in the main board cavity. 5. The flameproof box for the central control device used in the explosive gas environment according to claim 1, characterized in that: the upper top of the main box (2) is provided with a lifting ring (13), and the lower bottom is A support (14) is provided.

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