Shell structure of explosion-proof driver

Abstract

The utility model relates to the technical field of explosion-proof equipment, in particular to an explosion-proof driver shell structure which comprises a first shell box, a second shell box is fixed to the top of the first shell box, a box door is rotatably connected to an opening of the first shell box, and connecting assemblies are arranged at the four corners of the box door. The connecting assembly comprises a rotating shaft rotationally connected with the box door, a circular plate is fixed to one end of the rotating shaft, the circular plate is movably connected with the first shell box in a clamped mode, and an anti-explosion assembly is arranged in the first shell box. According to the utility model, the rotating shafts are rotatably connected to the four corners of the traditional box door, and the circular plate is eccentrically fixed to one end of each rotating shaft, so that after the box door is closed, the rotating shafts can be rotated to enable the eccentric position of the circular plate to be rotatably clamped to the door frame of the first shell box, and the box door and the first shell box can be firmly connected together; and popping of the box door caused by explosion of the first shell box is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof equipment technology, specifically an explosion-proof driver housing structure. Background Technology

[0002] Coal mining equipment such as coal mining machines and scraper conveyors are usually equipped with drives to control the operation of the equipment. In order to prevent the harsh environment of coal dust and low humidity in underground coal mines from affecting the operation of the drives, and also to provide an installation platform for the drives, drive housings are usually provided to store the electrical equipment on the drives. Since there are flammable and explosive gases such as methane and coal dust in underground coal mines, if a fault occurs inside the drive that causes an electric spark or arc, it may cause an explosion inside the drive housing. Therefore, most drive housings also need to have explosion-proof functions to meet the requirements for drive installation and storage.

[0003] Most drive enclosures have hinged doors. When a gas explosion occurs inside the enclosure, the door, which is only secured by a lock, can easily be blown open by the blast wave, damaging surrounding facilities. Furthermore, most drive enclosures cannot prevent explosions caused by gas from occurring at the source. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof drive housing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An explosion-proof actuator housing structure includes:

[0007] The outer casing 1 can be used to install and store the driver electrical components. The top of the outer casing 1 is fixed with the outer casing 2, which can be connected to external cables to supply power to the driver and transmit signals.

[0008] The case door is installed in a rotating manner with an open opening in the outer casing.

[0009] Multiple connecting components are arranged at the four corners of the door to securely connect and fix the door to the outer casing. Each connecting component includes a rotating shaft that is rotatably connected to the door. One end of the rotating shaft is fixed with a circular plate, which is movably engaged with the outer casing.

[0010] An explosion-proof component, arranged inside the outer casing, can effectively prevent gas from exploding inside the outer casing. The explosion-proof component includes a steel cylinder fixed to the outer casing, the steel cylinder containing compressed inert gas. The explosion-proof component also includes a semiconductor sensor fixed to the outer casing, the semiconductor sensor being able to detect the gas concentration inside the outer casing.

[0011] Furthermore, multiple wiring terminals are installed and fixed at both ends of the outer casing.

[0012] Furthermore, the outer casing has a door frame fixed to its opening, and the door frame is movably engaged with the circular plate.

[0013] Furthermore, the circular plate is eccentrically fixed to the rotating shaft, and a plurality of fixing blocks are fixed on the rear side of the box door, which are respectively rotatably connected to the rotating shaft at the corresponding position.

[0014] Furthermore, a damping rubber sleeve is provided between the rotating shaft and the fixed block, and a rotating block is fixed at one end of the rotating shaft.

[0015] Furthermore, two brackets for fixing the gas cylinder are installed on the inner side of the outer casing, a connecting pipe is fixedly connected to the top of the gas cylinder, and a solenoid valve is installed on the outer side of the connecting pipe.

[0016] Furthermore, the outer casing has multiple C-shaped frames fixed inside, each C-shaped frame has a C-shaped slot inside, and the points where the multiple C-shaped frames are fixed at intersections have circular holes that communicate with the C-shaped slots.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By rotating shafts at the four corners of the door, with a circular plate fixed to one end of each shaft, and the circular plate being eccentrically fixed to the shaft, when the door is closed to the outside of the frame, the shafts can be rotated to rotate the circular plates, causing the eccentric protruding areas of the circular plates that are far from the shafts to rotate to the corners of the frame. Similarly, the four circular plates can be rotated and latched onto the four corners of the frame, thus securing the door to the frame of the outer casing. This increases the connection strength between the door and the outer casing, making it difficult for the door to be blown open even if an explosion occurs inside the outer casing.

[0019] 2. By installing multiple semiconductor sensors at different locations inside the outer casing, based on the sensitivity of semiconductor materials to gas, when gas comes into contact with the semiconductor material, it will cause a change in the material's resistance, thereby indirectly detecting whether gas is inside the outer casing. When gas is detected inside the outer casing, the external controller opens the solenoid valve on the connecting pipe of the gas cylinder, thereby transporting the compressed inert gas stored inside the gas cylinder into the outer casing to maintain a positive pressure. The inert gas can not only effectively prevent external explosive gases from entering the casing, but also dilute the gas concentration and prevent gas combustion and explosion, thus preventing the occurrence of explosion accidents from the source of gas explosion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0022] Figure 3 This is a structural schematic diagram of the middle box door and the outer box of this utility model;

[0023] Figure 4 This is a utility model Figure 3 A magnified view of the structure at point A in the middle;

[0024] Figure 5 This is a schematic diagram of multiple U-shaped frame structures in this utility model.

[0025] In the diagram: 100, outer casing 1; 110, outer casing 2; 111, terminal block; 120, door frame; 121, round hole 1; 200, door; 210, fixing block; 220, round hole 2; 300, connecting assembly; 310, rotating shaft; 320, circular plate; 400, explosion-proof assembly; 410, gas cylinder; 411, connecting pipe; 420, semiconductor sensor; 500, C-shaped frame; 510, C-shaped slot; 520, round hole 3. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1, please refer to Figure 1 - Figure 5In this embodiment of the present invention, an explosion-proof driver housing structure includes a housing box 100, a housing box 210 fixed to the top of the housing box 100, a door 200 rotatably connected to the opening of the housing box 100, and connecting components 300 provided at the four corners of the door 200. The connecting components 300 include a rotating shaft 310 rotatably connected to the door 200, a circular plate 320 fixed to one end of the rotating shaft 310, and the circular plate 320 movably engaging with the housing box 100. An explosion-proof component 400 is provided inside the housing box 100. The explosion-proof component 400 includes a steel cylinder 410 fixed to the housing box 100, the steel cylinder 410 containing compressed inert gas, and the explosion-proof component 400 also includes a semiconductor sensor 420 fixed to the housing box 100, the semiconductor sensor 420 being able to detect the gas concentration inside the housing box 100.

[0028] Specifically, by rotatably connecting rotating shafts 310 at each of the four corners of the conventional door 200, and eccentrically fixing a circular plate 320 at one end of the rotating shaft 310, after the door 200 is closed, the rotating shaft 310 can be rotated to make the eccentric position of the circular plate 320 rotate and engage with the door frame 120 of the outer casing 100, which helps to firmly connect the door 200 and the outer casing 100 together, effectively preventing the door 200 from popping out due to an explosion of the outer casing 100. By installing a semiconductor sensor 420 inside the outer casing 100 to detect gas, when gas is detected inside the outer casing 100, the gas cylinder 410 can release inert gas into the outer casing 100 to prevent gas combustion and explosion, thereby preventing the explosion of the driver's outer casing from the source of gas explosion.

[0029] like Figure 1 As shown, in this embodiment, multiple wiring terminals 111 are installed and fixed at both ends of the outer casing 2 110. The wiring terminals 111 can be directly connected to external cables, eliminating the need to open additional wiring holes on the outer casing 2 110. This can effectively prevent coal dust from entering the interior of the outer casing 2 110. The cables inside the outer casing 2 110 will be connected to the driver-related electrical equipment inside the outer casing 1 100. This part is prior art, and the specific working principle will not be described in detail.

[0030] like Figure 3 and Figure 4 As shown, in this embodiment, a door frame 120 is fixedly connected to the opening of the outer casing 100. The door frame 120 is movably engaged with the circular plate 320. After the door 200 is closed to the opening of the outer casing 100, the door lock on the door 200 is first fixed, so that the door 200 is initially fixed to the outside of the outer casing 100. Then, the rotating shaft 310 is rotated so that the eccentric protrusion of the circular plate 320 is rotated to the corner of the door frame 120, so as to facilitate the connection and fixation of the door 200 to the outer casing 100.

[0031] In this embodiment, the circular plate 320 is eccentrically fixed to the rotating shaft 310, so that the circular plate 320 can be engaged with the inside of the door frame 120 or separated from the door frame 120 after rotation. After the circular plate 320 is separated from the door frame 120, it is convenient for the box door 200 to be opened.

[0032] like Figure 4 As shown, in this embodiment, a plurality of fixed blocks 210 are fixed on the rear side of the door 200, which are respectively rotatably connected to the corresponding rotating shaft 310. A damping rubber sleeve is provided between the rotating shaft 310 and the fixed block 210, so that the rotating shaft 310 has greater resistance to rotation inside the fixed block 210, and the rotating shaft 310 can stay in the position after rotation and will not rotate on its own.

[0033] like Figure 1 As shown, in this embodiment, a rotating block is fixed at one end of the rotating shaft 310. The rotating block makes it convenient for the user to rotate the rotating shaft 310. A circular groove is provided on the outer side of the door 200 near the rotating block. The circular groove makes it convenient for the user to reach out to the outside of the rotating block and rotate it.

[0034] like Figure 2 As shown, in this embodiment, two brackets for fixing the gas cylinder 410 are installed and fixed inside the outer casing 100. A connecting pipe 411 is fixedly connected to the top of the gas cylinder 410. A solenoid valve is installed on the outside of the connecting pipe 411. When gas is detected inside the outer casing 100, the solenoid valve on the connecting pipe 411 can be opened, and then the inert gas inside the gas cylinder 410 can be discharged into the outer casing 100, which to a certain extent prevents gas explosion.

[0035] In this embodiment, when the inert gas inside the cylinder 410 is low, the pipe for pumping inert gas from the outside can be connected to the connecting pipe 411 to facilitate the replenishment of spare inert gas to the cylinder 410.

[0036] In Example 2, based on Example 1, a pressure relief channel is connected to the conventional driver housing to release the high-pressure airflow generated by an explosion inside the housing, in order to prevent flames and high-pressure airflow inside the housing from directly escaping from the pressure relief channel and causing an environmental explosion.

[0037] like Figure 1 , Figure 2 and Figure 5As shown, in this embodiment, multiple C-shaped frames 500 are fixed inside the outer casing 100. C-shaped slots 510 are opened inside the C-shaped frames 500. At the intersection of the multiple C-shaped frames 500, circular holes 3 520 communicating with the C-shaped slots 510 are opened. Multiple circular holes 121 are opened through the outer side of the door frame 120. Multiple circular holes 220 are opened through the outer side of the box door 200. After the box door 200 is closed, the circular holes 220 are connected with the corresponding circular holes 121 and C-shaped slots 510. When the explosion inside the outer casing 100 generates high-pressure air and flames, the high-pressure airflow and flames can flow along the multiple circular holes 3 520 into the C-shaped slots 510, and then be discharged to the outside from both ends of the C-shaped slots 510 along the circular holes 121 and circular holes 220.

[0038] In this embodiment, multiple small-diameter pressure relief channels replace the traditional large-sized pressure relief channel. After the high-pressure airflow and flame pass through the small-diameter pressure relief channel composed of the second circular hole 220, the first circular hole 121 and the C-shaped groove 510, the flame and airflow inside the outer casing 100 can be effectively prevented from directly escaping during the pressure relief process, thus avoiding an environmental explosion and improving the overall pressure relief safety.

[0039] In this embodiment, multiple I-shaped frames 500 are evenly fixed inside the outer casing 100, which can also improve the structural strength of the entire outer casing 100 and further improve the explosion resistance of the outer casing 100.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An explosion-proof driver housing structure, characterized in that, include: The outer casing 1 (100) is capable of housing the driver electrical components. The top of the outer casing 1 (100) is fixed with the outer casing 2 (110), which is capable of being connected to an external cable to supply power to the driver and transmit signals. The door (200) is rotatably mounted with the outer casing (100) open. Multiple connecting components (300) are arranged at the four corners of the door (200) to securely connect and fix the door to the outer casing. Each connecting component (300) includes a rotating shaft (310) rotatably connected to the door (200). A circular plate (320) is fixed at one end of the rotating shaft (310), and the circular plate (320) is movably engaged with the outer casing (100). An explosion-proof component (400) is arranged inside the outer casing (100) and can effectively prevent gas from exploding inside the outer casing (100). The explosion-proof component (400) includes a steel cylinder (410) fixed to the outer casing (100), which contains compressed inert gas. The explosion-proof component (400) also includes a semiconductor sensor (420) fixed to the outer casing (100), which can detect the gas concentration inside the outer casing (100).

2. The explosion-proof driver housing structure according to claim 1, characterized in that, Multiple wiring terminals (111) are installed and fixed at both ends of the outer casing (110).

3. The explosion-proof driver housing structure according to claim 1, characterized in that, The opening of the outer casing (100) is fixed with a door frame (120), and the door frame (120) is movably engaged with the circular plate (320).

4. The explosion-proof driver housing structure according to claim 3, characterized in that, The circular plate (320) is eccentrically fixed to the rotating shaft (310), and a plurality of fixing blocks (210) are fixed on the rear side of the box door (200) respectively rotatably connected to the rotating shaft at the corresponding position.

5. The explosion-proof driver housing structure according to claim 4, characterized in that, A damping rubber sleeve is fitted between the rotating shaft (310) and the fixed block (210), and a rotating block is fixed at one end of the rotating shaft (310).

6. The explosion-proof driver housing structure according to claim 1, characterized in that, Two brackets for fixing the steel cylinder (410) are installed on the inner side of the outer casing (100). A connecting pipe (411) is fixedly connected to the top of the steel cylinder (410), and a solenoid valve is installed on the outer side of the connecting pipe (411).

7. The explosion-proof driver housing structure according to claim 1 or 6, characterized in that, The outer casing (100) has multiple shaped brackets (500) fixed inside. Each shaped bracket (500) has an shaped slot (510) inside. At the intersection of the multiple shaped brackets (500), there is a circular hole (520) that communicates with the shaped slot (510).

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