Intelligent explosion-proof control box

Abstract

An intelligent explosion-proof control box comprises a box shell, a box cover installed on the box shell, an electrical element, a plurality of explosion-proof cable introducing devices, and a display screen packaged on a window of the box cover. The explosion-proof tempered glass is fixed in a step groove of a window of the box cover in a pouring and sealing mode, the liquid crystal display screen is fixed to the rear side of the explosion-proof tempered glass, the positioning buckling and pressing steel plate covers the rear side of the liquid crystal display screen, and the positioning buckling and pressing steel plate comprises a positioning edge pressing part formed by outwards folding the peripheral part of a cover shell; the positioning edge pressing part is pressed on the explosion-proof toughened glass and the inner wall of the box cover in a surface contact manner at the same time, and the positioning edge pressing part and the inner wall of the box cover are fixed through screws. The explosion-proof toughened glass at the front part of the display screen is directly encapsulated at the window part of the box cover, and is pressed by the positioning buckling steel plate fixedly connected with the box cover through screws, so that an explosion-proof cavity is formed between the box shell and the box cover, the explosion-proof requirement is met, the informatization operation requirement is also met, the use is safe, and the manufacturing cost is relatively low.

Description

Technical Field

[0001] The utility model relates to an intelligent explosion-proof control box. Background Art

[0002] The explosion-proof control box in the prior art usually includes an explosion-proof box composed of a box shell and a box cover, electrical components arranged in the explosion-proof box, and multiple explosion-proof cable lead-in devices arranged on the box shell. Most of the explosion-proof control boxes currently used in the market have various control buttons installed on the box cover to indirectly operate the electrical components in the explosion-proof box. However, with the advent of the information age, this traditional explosion-proof control box is increasingly unable to meet the needs of modern industrial use. There are also explosion-proof boxes with display screens on the market, but they all directly install the explosion-proof display screen on the box shell or the box cover. The display screen and the explosion-proof box must be certified by explosion-proof testing. The certification procedures are cumbersome and the production cost is high.

[0003] Therefore, it is necessary to design an intelligent explosion-proof control box that is in line with the information age, safe to use, and has low production costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an intelligent explosion-proof control box.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an intelligent explosion-proof control box, including a box cover installed on the box shell, electrical components arranged in the box shell, and a plurality of explosion-proof cable introduction devices, the box shell and the box cover are sealed and installed to form a flameproof box, and also include a display screen encapsulated on the box cover window, the display screen includes explosion-proof tempered glass cast and fixed in the step groove of the box cover window, a liquid crystal display screen fixed to the rear side of the explosion-proof tempered glass, and a positioning buckling steel plate covered on the rear side of the liquid crystal display screen, the positioning buckling steel plate includes a cover shell body, a positioning pressing edge portion formed by folding outwardly the peripheral portion of the cover shell body, the positioning pressing edge portion is simultaneously pressed on the explosion-proof tempered glass and the inner wall of the box cover in surface contact, and the positioning pressing edge portion is fixed to the inner wall of the box cover by screws.

[0006] In some embodiments, the display screen also includes a resistive touch screen located in front of the explosion-proof tempered glass, the front side of the resistive touch screen is covered with an anti-static film, the rear side of the resistive touch screen is bonded to the explosion-proof tempered glass, and the overall edge portion and the window portion of the box cover are cast and bonded after bonding; a grounded explosion-proof safety grid is fixedly installed on the rear side of the positioning and buckling steel plate, and the explosion-proof safety grid and the resistive touch screen are connected by wires.

[0007] In certain embodiments, a transverse notch is provided in the step groove of the box cover window, and the wire portion is located in the transverse notch and is cast and sealed.

[0008] In some embodiments, the display screen is cast and sealed with adhesive using - glue, and the lateral length of the bond between the display screen and the window portion of the box cover is greater than or equal to.

[0009] In certain embodiments, a display screen mainboard is fixed to the rear side of the positioning and buckling steel plate via a plurality of brass columns, and the display screen mainboard is covered in a galvanized sheet cover, and the peripheral fold of the galvanized sheet cover is fixedly connected to the positioning and buckling steel plate.

[0010] In some embodiments, the box shell and the box cover are both made of high thermal conductivity materials that can meet the product heat dissipation requirements and product explosion-proof requirements. The end face of the box shell and the box cover are sealed by at least one full circle of sealing rings embedded therein, and then fixedly connected by multiple screws.

[0011] In some embodiments, the edge of the box cover has an outer cover edge that is covered on the side wall of the box shell, the outer cover edge has an arc-shaped cross-section, and the outer cover edge is sealed with the outer surface of the box shell by at least one full circle of embedded sealing ring.

[0012] In certain embodiments, the threaded flameproof seal on the box cover is equipped with operating components and / or explosion-proof indicator lights.

[0013] In certain embodiments, the electrical component is mounted and fixed on the inner bottom plate of the box shell, a component mounting steel frame is fixedly mounted on the inner bottom plate of the box shell, and the electrical component is fixedly mounted on the component mounting steel frame.

[0014] In certain embodiments, a plurality of said explosion-proof cable entry devices are fixedly mounted on the side wall of the box shell.

[0015] The scope of the utility model is not limited to the technical solutions formed by the specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0016] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: in the utility model, the explosion-proof tempered glass of the display screen is directly cast and sealed on the window part of the box cover, and then pressed together with the positioning buckle steel plate fixedly connected with the box cover screws, so that a flameproof cavity is formed between the box shell and the box cover, which meets the explosion-proof requirements while also meeting the information operation requirements, is safe to use, and has a relatively low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is the front view of the intelligent explosion-proof control box;

[0018] Attached Figure 2 This is a top view of the intelligent explosion-proof control box;

[0019] Attached Figure 3 For attachment Figure 1 AA section view;

[0020] Attached Figure 4 For attachment Figure 3 The enlarged view of point B;

[0021] Among them: 1. Explosion-proof box; 11. Box shell; 12. Box cover; 12a. Outer cover edge; 12b. Step groove; 2. Display screen; 21. Antistatic film; 22. Resistive touch screen; 23. Explosion-proof tempered glass; 24. Liquid crystal display screen; 25. Display screen motherboard; 3. Explosion-proof safety grid; 4. Electrical components; 5. Explosion-proof cable entry device; 61. Positioning buckling steel plate; 61a. Positioning pressing edge; 62. Component mounting steel frame; 63. Brass column; 64. Galvanized sheet cover; 65. Steel pillar; 71. Explosion-proof display light; 72. Universal switch for explosion-proof chamber; 73. Explosion-proof button; 74. Potentiometer for explosion-proof chamber. DETAILED DESCRIPTION

[0022] As attached Figure 1 , 2 As shown, an intelligent explosion-proof control box includes a flameproof box 1 composed of an aluminum alloy box shell 11 and an aluminum alloy box cover 12, electrical components 4 arranged in the flameproof box 1, a display screen 2 encapsulated on the window of the box cover 12, and multiple explosion-proof cable entry devices 5.

[0023] There are many kinds of electrical components 4, such as terminal blocks 2, fuses, intermediate relays, ammeters, electric operating mechanisms, etc., which can be selected and installed according to customer needs. A component mounting steel frame 62 is installed on the bottom plate of the box shell 11 through multiple pairs of steel pillars 65 and screws, and the electrical components 4 are fixedly installed on the component mounting steel frame 62. After various electrical components 4 are installed on the component mounting steel frame 62, the component mounting steel frame 62 is installed and fixed. The cooperation of the steel pillars 65, screws and the component mounting steel frame 62 can transfer the heat generated during the operation of the electrical components 4 to the flameproof box 1, which is convenient for heat dissipation.

[0024] The display screen includes an explosion-proof tempered glass 23 cast and fixed in the step groove 12b of the window of the box cover 12, a liquid crystal display screen 24 fixed to the rear side of the explosion-proof tempered glass 23, and a positioning and pressing steel plate 61 covering the rear side of the liquid crystal display screen 24. The positioning and pressing steel plate 61 includes a cover body, a positioning pressing edge portion 61a formed by folding outwardly from the peripheral portion of the cover body, and the positioning pressing edge portion 61a is simultaneously pressed and contacted on the explosion-proof tempered glass 23 and the inner wall of the box cover 12, and the positioning pressing edge portion 61a is fixed to the inner wall of the box cover 12 by screws.

[0025] The display screen mainboard 25 is supported and fixed on the rear side of the positioning and buckling steel plate 61 by multiple brass columns 63. During operation, the display screen mainboard 25 will generate a lot of heat, which is effectively transferred to the positioning and buckling steel plate 61 through the brass columns 63, thereby effectively dissipating the heat through the aluminum alloy box cover 12.

[0026] The display screen mainboard 25 is covered in the galvanized sheet cover 64, and the peripheral fold of the galvanized sheet cover 64 is fixedly connected to the positioning buckle steel plate 61. The galvanized sheet cover 64 effectively prevents the heat of the display screen mainboard 25 from being transferred to the rear side electrical components 4, and protects the display screen mainboard 25 from being damaged by the electrical components 4 falling off.

[0027] If the display screen needs to have a touch function, a resistive touch screen 22 is bonded to the front side of the explosion-proof tempered glass 23, and the front side of the resistive touch screen 22 is covered with an antistatic film 21. After the three form a whole, the edge of the whole and the window of the box cover 12 are bonded by SY-6002 glue casting and sealing, and the lateral length of the bonding between the display screen 2 and the window of the box cover 12 is greater than or equal to 10mm.

[0028] A grounded explosion-proof safety barrier 3 is fixedly installed between the rear side of the positioning buckling steel plate 61 and the display screen mainboard 25, and an FPC line is used to connect the explosion-proof safety barrier 3 and the resistive touch screen 22. A transverse notch is provided in the step groove 12b of the window of the box cover 12, and the FPC line is partially located in the transverse notch and cast.

[0029] The edge of the box cover 12 has an outer cover edge 12a which is covered on the side wall of the box shell. The outer contour of the cross section of the outer cover edge 12a is in an arc shape, and the outer cover edge 12a is sealed with the outer surface of the box shell through at least one full circle of embedded sealing rings. The end surface of the box shell 11 and the box cover 12 are sealed with at least one full circle of embedded sealing rings, and the flameproof joint surface L≥12.5mm, l≥8mm, and the gap ic≤0.15mm of the joint surface.

[0030] The arc-shaped outer cover edge 12a is more convenient for liquid containing chemicals in explosion-proof places outside the box cover 12 to drip down along the arc surface, and will not enter the joint between the box shell 11 and the box cover 12 to corrode, making the explosion-proof box safer.

[0031] The touch screen 2 can communicate and control the internal electrical components 4. However, the box cover 12 can also be threaded with explosion-proof seals to install explosion-proof indicator lights 71 and / or operating components according to customer needs, such as a universal switch 72 for the explosion-proof chamber, an explosion-proof button 73, a potentiometer 74 for the explosion-proof chamber, etc.

[0032] A plurality of explosion-proof cable lead-in devices 5 are fixedly mounted on the side wall of the box shell 11 , and various cables, signal lines, and power lines are introduced into the flameproof cavity through the explosion-proof cable lead-in devices 5 for connection.

[0033] After the antistatic film 21, the resistive touch screen 22, and the explosion-proof tempered glass 23 are formed into a whole, they are bonded to the window of the box cover 12 by SY-6002 glue pouring and sealing, and then the steel plate 61, the component mounting steel frame 62, the brass column 63, and the galvanized sheet cover 64 are positioned and pressed to effectively and stably install them, and effective heat dissipation in a closed environment is guaranteed. Combined with the sealing treatment between the box shell 11 and the box cover 12, an intelligent explosion-proof control box with a simple structure, in compliance with the regulations of the explosion-proof control box, low production cost, and in compliance with the operation requirements of the information age is obtained, and it is suitable for an ambient temperature range of -40℃≤Ta≤+55℃, and the protection level reaches IP66.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An intelligent explosion-proof control box, comprising a box shell (11), a box cover (12) mounted on the box shell (11), an electrical component (4) arranged in the box shell (11), and a plurality of explosion-proof cable entry devices (5), characterized in that: The box shell (11) and the box cover (12) are sealed and installed to form a flameproof box (1), and further comprising a display screen (2) encapsulated on the window of the box cover (12), wherein the display screen (2) comprises an explosion-proof tempered glass (23) cast and fixed in a step groove (12b) of the window of the box cover (12), a liquid crystal display screen (24) fixed to the rear side of the explosion-proof tempered glass (23), and a positioning buckling steel plate (61) covering the rear side of the liquid crystal display screen (24), wherein the positioning buckling steel plate (61) comprises a cover shell, and a positioning pressing edge portion (61a) formed by folding outwardly the peripheral portion of the cover shell, wherein the positioning pressing edge portion (61a) is simultaneously pressed and arranged on the explosion-proof tempered glass (23) and the inner wall of the box cover (12) in surface contact, and the positioning pressing edge portion (61a) is fixed to the inner wall of the box cover (12) by screws.

2. The intelligent explosion-proof control box according to claim 1 is characterized in that: The display screen (2) further comprises a resistive touch screen (22) located in front of the explosion-proof tempered glass (23); the front side of the resistive touch screen (22) is covered with an antistatic film (21); the rear side of the resistive touch screen (22) is bonded to the explosion-proof tempered glass (23); the integral edge portion and the window portion of the box cover (12) are sealed and bonded after bonding; a grounded explosion-proof safety grid (3) is fixedly mounted on the rear side of the positioning buckling steel plate (61); the explosion-proof safety grid (3) and the resistive touch screen (22) are connected by an FPC line.

3. The intelligent explosion-proof control box according to claim 2 is characterized in that: A transverse notch is provided in the step groove (12b) of the window of the box cover (12), and the FPC line portion is located in the transverse notch and is cast-sealed.

4. The intelligent explosion-proof control box according to claim 1 is characterized in that: The display screen (2) is cast and bonded with SY-6002 glue, and the lateral length of the bond between the display screen (2) and the window portion of the box cover (12) is greater than or equal to 10 mm.

5. The intelligent explosion-proof control box according to claim 1 is characterized in that: A display screen mainboard (25) is supported and fixed on the rear side of the positioning and buckling steel plate (61) via a plurality of brass columns (63); the display screen mainboard (25) is covered in a galvanized sheet cover (64); and the peripheral folded edge of the galvanized sheet cover (64) is fixedly connected to the positioning and buckling steel plate (61).

6. The intelligent explosion-proof control box according to claim 1 is characterized in that: The box shell (11) and the box cover (12) are both made of high thermal conductivity materials that can meet product heat dissipation requirements and product explosion-proof requirements. The end surface of the box shell (11) and the box cover (12) are sealed by at least one full circle of sealing rings embedded therein, and then fixedly connected by a plurality of screws.

7. The intelligent explosion-proof control box according to claim 6 is characterized in that: The edge of the box cover (12) comprises an outer cover edge (12a) which is covered on the side wall of the box shell, the outer contour of the cross section of the outer cover edge (12a) is in the shape of an arc, and the outer cover edge (12a) is sealed with the outer surface of the box shell by at least one full circle of embedded sealing ring.

8. The intelligent explosion-proof control box according to claim 1 is characterized in that: An operating component and / or an explosion-proof display light (71) is installed on the threaded flameproof seal on the box cover (12).

9. The intelligent explosion-proof control box according to claim 1 is characterized in that: The electrical component (4) is mounted and fixed on the inner bottom plate of the box shell (11); a component mounting steel frame (62) is fixedly mounted on the inner bottom plate of the box shell (11); and the electrical component (4) is fixedly mounted on the component mounting steel frame (62).

10. The intelligent explosion-proof control box according to claim 1, characterized in that: A plurality of the explosion-proof cable entry devices (5) are fixedly mounted on the side wall of the box shell (11).

Images