Explosion-proof safe power supply box

Abstract

The invention provides an explosion-proof safe power supply box, and relates to the field of power supply boxes. The explosion-proof safe power supply box comprises a power supply box body and an explosion-proof box body, a power supply box edge is fixed on the power supply box body, an explosion-proof box edge is fixed on the explosion-proof box body, the power supply box edge and the explosion-proof box edge are fixedly connected with each other through bolts and nuts, a sealing structure is arranged between the power supply box edge and the explosion-proof box edge, and the explosion-proof box edge is fixed on the explosion-proof box body. An explosion-proof structure capable of extinguishing fire is arranged in the explosion-proof box body, and a cutting structure capable of cutting off a wire is arranged in the power supply box body. According to the anti-explosion safe power supply box, the power supply box body is electrically connected with the external wire, when the interior of the power supply box body is on fire, fire can be extinguished rapidly through the anti-explosion structure, the power supply box body is prevented from exploding, meanwhile, the wire can be cut off rapidly through the cut-off structure, fire spreading is avoided, and the use safety of the power supply box is improved.

Description

Technical Field

[0001] The invention relates to the field of power supply boxes, in particular to an explosion-proof safety power supply box. Background Art

[0002] A power box is a box that contains power management components and is used to provide a stable and reliable power supply for electronic devices. Depending on different application scenarios and technical characteristics, the power box can have a variety of functions and features. When the inside of the power box is damp, the wiring terminals may short-circuit and cause fire and explosion, so the safety of the power box is also crucial;

[0003] Application No. CN202322122873.7 discloses an explosion-proof power adapter box, including a box body, a cavity is formed inside the box body, a detachable box cover is installed on the box body, and the characteristics are that a transfer circuit board is installed in the cavity, a gap is left between the transfer circuit board and the bottom surface of the cavity, a heat conduction component is installed in the gap, a cooling element used in conjunction with the heat conduction component is installed at the bottom of the box body, a hollow rubber tube is embedded on the top surface of the box body, and the rubber tube is located between the box cover and the box body;

[0004] The above-mentioned power box structure only uses a rubber tube to achieve the sealing between the box body and the box cover. This sealing effect is not good enough. At the same time, the explosion-proof effect is achieved by only using a heat spreader, heat exchange fins and cooling water pipes to dissipate heat inside the power box. However, when a fire occurs inside the power box, there are no corresponding fire extinguishing measures. When the power box catches fire, the fire will spread outward along the wires, so that the possibility of the power box exploding due to fire still exists, resulting in the power box The safety is not high enough. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides an explosion-proof safety power supply box, which solves the problem that the power supply box is inconvenient to extinguish fire and explosion inside and has low safety when in use.

[0007] (II) Technical solution

[0008] In order to achieve the purpose that the above power box is easy to extinguish fire and explosion-proof inside and has high safety when in use, the present invention is implemented through the following technical solutions: an explosion-proof safety power box, including a power box body and an explosion-proof box body, a power box edge is fixed on the power box body, an explosion-proof box edge is fixed on the explosion-proof box body, the power box edge and the explosion-proof box edge are fixedly connected to each other by bolts and nuts, a sealing structure is provided between the power box edge and the explosion-proof box edge, an explosion-proof structure capable of extinguishing fire is provided inside the explosion-proof box body, and a cutting structure capable of cutting off wires is provided inside the power box body;

[0009] The explosion-proof structure includes a pressure relief valve, which is installed on the explosion-proof box body. A condensation plate is installed on the inner top surface of the explosion-proof box body. A discharging electric rod is installed in the middle of the inner top surface of the explosion-proof box body. A conical net is fixed to the bottom end of the discharging electric rod. A sand storage frustum is fixed to the inner bottom surface of the explosion-proof box body. A sand storage frustum cavity is formed inside the sand storage frustum. A discharging through hole is formed at the bottom end of the sand storage frustum cavity.

[0010] The cutting-off structure includes a wedge-shaped limiting block, which is fixed to the inner top surface and bottom surface of the power supply box body. A cutting-off electric rod is installed on the inner side wall of the power supply box body. A moving platform is fixed to the inner end of the cutting-off electric rod. A cutting groove is horizontally formed inside the moving platform. Sliding grooves are formed inside the moving platform on the upper and lower sides of the cutting groove. Sliding plates are slidably arranged inside the sliding grooves. Springs are arranged on the sliding plates. An upper cutting knife is fixed between the upper sliding plates. A lower cutting knife is fixed between the lower sliding plates. Pressing inclined blocks are fixed to the top end of the upper cutting knife and the bottom end of the lower cutting knife.

[0011] Preferably, the power supply box body is communicated with the explosion-proof box body through the discharging through hole. The bottom surface of the condensation plate is an inclined surface. A gap is left between the sand storage frustum and the inner wall of the explosion-proof box body.

[0012] Preferably, the conical net is adapted to the bottom end of the discharging through hole. The conical net is in the shape of a frustum of a cone, and ventilation holes are arranged on the surface of the conical net.

[0013] Preferably, the sand storage frustum cavity is in the shape of a frustum of a quadrangular pyramid. A dust-free sand pile after water washing is arranged inside the sand storage frustum cavity, and the sand pile is located above the conical net. The aperture size of the ventilation holes on the conical net is smaller than the size of the sand grains.

[0014] Preferably, the inclined surface of the moving platform is adapted to the inclined surfaces of the wedge-shaped limiting blocks on its upper and lower sides. The discharging through hole is located between the left and right groups of moving platforms. The pressing inclined blocks are adapted to the inclined surfaces of the moving platform and the wedge-shaped limiting blocks.

[0015] Preferably, the sliding groove is in the shape of a Chinese character 'Zhong'. One end of the spring is fixedly connected to the sliding plate, and the other end is fixedly connected to the inner wall of the sliding groove. The bottom end of the upper cutting knife and the top end of the lower cutting knife extend into the cutting groove.

[0016] Preferably, the power box body includes wiring terminals, which are installed at the left and right ends of the power box body, an outer end of the left wiring terminal is movably connected with a heating tape line, and an outer end of the right wiring terminal is movably connected with an electric cable, a sand discharge valve pipe is installed on the outer bottom surface of the power box body, a circuit board is installed on the inner bottom surface of the power box body, and a wiring post is installed on the circuit board, the inner wiring of the heating tape is electrically connected between the left wiring terminal and the wiring post, and the inner wiring of the cable is electrically connected between the right wiring terminal and the wiring post.

[0017] Preferably, the wiring inside the heating belt passes through the cutting groove on the left side, and the wiring inside the cable passes through the cutting groove on the right side.

[0018] Preferably, the sealing structure includes a lower serrated plate and an upper serrated plate, the lower serrated plate is fixed to the inner side of the top end of the power box edge, the upper serrated plate is fixed to the inner side of the bottom end of the explosion-proof box edge, slots are provided on the outer side of the top end of the power box edge and the outer side of the bottom end of the explosion-proof box edge, a dustproof mesh plate is installed in the slot on the outer side of the explosion-proof box edge, and a drying filter plate is installed in the slot on the inner side of the power box edge.

[0019] Preferably, the lower serrated plate and the upper serrated plate are both serrated and matched, the dust screen plate is movably connected to the slot on the outer side of the power box edge, and the drying filter plate is movably connected to the slot on the inner side of the explosion-proof box edge.

[0020] (III) Beneficial effects

[0021] The present invention provides an explosion-proof safety power supply box, which has the following beneficial effects:

[0022] 1. After the power box body and the explosion-proof box body are fixedly connected to each other, the lower serrated plate and the upper serrated plate are tightly attached to each other, which can improve the sealing performance when the power box body and the explosion-proof box body are connected. At the same time, the dustproof mesh plate is inserted into the slot on the outside of the power box side. Therefore, the dustproof mesh plate can prevent external dust from entering the power box body from the gap between the power box side and the explosion-proof box side. The drying filter plate is inserted into the slot on the inside of the explosion-proof box side. Therefore, the drying filter plate can dry the moisture in the air between the power box side and the explosion-proof box side to prevent moisture from entering the power box body, thereby improving the safety of the power box body when it is sealed.

[0023] 2. A pile of dust-free sand after washing is piled up inside the sand storage cavity. When a fire occurs between the terminal posts on the circuit board and the wiring inside the heating tape and the wiring inside the cable, the cutting electric rod drives the two sets of moving platforms to move inward and close to each other. The moving platform can push the upper cutting knife and the lower cutting knife to move inward, and make the upper cutting knife move obliquely downward, and the lower cutting knife move obliquely upward. Therefore, by bringing the two sets of upper cutting knives and lower cutting knives close to each other, the wiring inside the heating tape and the wiring inside the cable inside the cutting groove on the left and right sides can be cut off, preventing the fire from spreading outward along the wiring inside the heating tape and the wiring inside the cable.

[0024] 3. The unloading electric rod can drive the cone net to move downward, so that the cone net moves out to the bottom of the unloading port. At this time, the sand piled inside the sand storage cavity can be sprinkled downward onto the circuit board through the unloading port, so that the sand pile fills the cavity between the wedge-shaped limit blocks and the moving platform on the left and right sides, thereby quickly extinguishing the fire in the power box and preventing the power box from exploding due to fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a closed diagram of the conical net structure and the discharge port of the present invention;

[0027] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of the structure at center A;

[0028] Figure 4 This is an open view of the conical net structure and the discharge port of the present invention;

[0029] Figure 5 This is a schematic diagram of the explosion-proof box structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the power box body of the present invention;

[0031] Figure 7 It is a schematic diagram of the mobile station structure of the present invention.

[0032] Among them, 1. power box body; 101. terminal block; 102. heating cable; 103. cable; 104. sand valve pipe; 105. circuit board; 106. terminal block; 107. heating cable internal wiring; 108. cable internal wiring; 2. explosion-proof box body; 3. power box edge; 4. explosion-proof box edge; 5. sealing structure; 501. lower serrated plate; 502. upper serrated plate; 503. slot; 504. dust screen plate; 505. drying filter plate; 6. explosion-proof Explosion structure; 601, pressure relief valve; 602, condensation plate; 603, discharge electric rod; 604, cone net; 605, sand storage prism; 606, sand storage prism cavity; 607, discharge port; 7, cutting structure; 701, wedge-shaped limit block; 702, cutting electric rod; 703, moving platform; 704, cutting groove; 705, slide groove; 706, slide plate; 707, spring; 708, upper cutting knife; 709, lower cutting knife; 710, extrusion inclined block. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figure 1-Figure 7 The present invention provides a technical solution: an explosion-proof safety power supply box, comprising a power supply box body 1 and an explosion-proof box body 2, a power supply box edge 3 is fixed on the power supply box body 1, an explosion-proof box edge 4 is fixed on the explosion-proof box body 2, the power supply box edge 3 and the explosion-proof box edge 4 are fixedly connected to each other by bolts and nuts, a sealing structure 5 is arranged between the power supply box edge 3 and the explosion-proof box edge 4, an explosion-proof structure 6 capable of extinguishing fire is arranged inside the explosion-proof box body 2, and a cutting structure 7 capable of cutting off the wire is arranged inside the power supply box body 1;

[0035] The explosion-proof structure 6 includes a pressure relief valve 601, which is installed on the explosion-proof box body 2. A condensation plate 602 is installed on the inner top surface of the explosion-proof box body 2. A discharge electric rod 603 is installed in the middle of the inner top surface of the explosion-proof box body 2. A conical net 604 is fixed to the bottom end of the discharge electric rod 603. A sand storage prism 605 is fixed to the inner bottom surface of the explosion-proof box body 2. A sand storage prism cavity 606 is opened inside the sand storage prism cavity 606. A discharge port 607 is opened at the inner bottom end of the sand storage prism cavity 606.

[0036] The cutting structure 7 includes a wedge-shaped limit block 701, which is fixed to the inner top and bottom surfaces of the power box body 1. A cutting electric rod 702 is installed on the inner wall of the power box body 1. A moving platform 703 is fixed to the inner end of the cutting electric rod 702. A cutting groove 704 is horizontally opened inside the moving platform 703. Slide grooves 705 are opened inside the moving platform 703 and on the upper and lower sides of the cutting groove 704. A slide plate 706 slides inside the slide groove 705. A spring 707 is arranged on the slide plate 706. An upper cutting knife 708 is fixed between the upper slide plates 706. A lower cutting knife 709 is fixed between the lower slide plates 706. The top of the upper cutting knife 708 and An extrusion bevel 710 is fixed to the bottom end of the lower cutting knife 709. By electrically connecting the outer ends of the heating tape 102 and the cable 103 to external equipment, and a small fire alarm is arranged inside the power box body 1, and the small fire alarm is electrically connected to the unloading electric rod 603 and the cutting electric rod 702 through an external controller, when the small fire alarm detects a fire inside the power box body 1, it can transmit the information to the controller, and the controller processes the information and then transmits it to the unloading electric rod 603 and the cutting electric rod 702, so that the unloading electric rod 603 and the cutting electric rod 702 can work normally, thereby ensuring the safety of the power box body 1 when in use.

[0037] In this embodiment, the power box body 1 and the explosion-proof box body 2 are connected through the discharge port 607, the bottom surface of the condensation plate 602 is an inclined surface, and a gap is left between the sand storage prism 605 and the inner wall of the explosion-proof box body 2;

[0038] For details, please refer to the attached manual. Figure 4 As shown, the hot air generated by the electrical components on the circuit board 105 floats upward, and can float upward through the discharge port 607 and the gap between the sand piles, and liquefy into liquid water droplets with the condensation plate 602, and the water droplets can drip downward along the condensation plate 602 into the gap between the sand storage platform 605 and the explosion-proof box body 2, thereby cooling the power supply box body 1.

[0039] In this embodiment, the conical net 604 is matched with the bottom end of the discharge port 607, the conical net 604 is in the shape of a truncated cone, and a vent hole is provided on the surface of the conical net 604;

[0040] Specifically, when the conical net 604 blocks the bottom end of the discharge opening 607, the hot air generated by the operation of the electrical components on the circuit board 105 can continue to float upward through the ventilation holes on the surface of the conical net 604, preventing the internal pressure of the power supply box body 1 from increasing due to the increase in the generated hot air. Therefore, the heat dissipation and pressure relief inside the power supply box body 1 can be timely carried out.

[0041] In this embodiment, the sand storage prism cavity 606 is in the shape of a frustum of a pyramid. The inside of the sand storage prism cavity 606 is provided with a pile of dust-free sand after water washing, and the sand pile is located above the conical net 604. The size of the ventilation hole diameter on the conical net 604 is smaller than the size of the sand grains.

[0042] Specifically, as shown in the attached Figure 2 As shown in the figure, when the conical net 604 blocks the bottom end of the discharge opening 607, since the size of the ventilation hole diameter on the conical net 604 is smaller than the size of the sand grains, the sand grains inside the sand storage prism cavity 606 can be prevented from falling downward after passing through the conical net 604.

[0043] In this embodiment, the inclined surface of the moving platform 703 is adapted to the inclined surfaces of the wedge-shaped limiting blocks 701 on its upper and lower sides. The discharge opening 607 is located between the left and right groups of moving platforms 703. The pressing inclined block 710 is adapted to the inclined surfaces of the moving platform 703 and the wedge-shaped limiting blocks 701.

[0044] Specifically, as shown in the attached Figure 2 As shown in the figure, when the moving platform 703 comes into contact with the inclined surfaces of the wedge-shaped limiting blocks 701 on its upper and lower sides, at this time, the upper cutting knife 708 and the lower cutting knife 709 move into the inside of the cutting groove 704 and cut off the internal wiring 107 of the heating tape and the internal wiring 108 of the cable inside the cutting groove 704, preventing the fire from spreading outward along the internal wiring 107 of the heating tape and the internal wiring 108 of the cable.

[0045] In this embodiment, the sliding groove 705 is in the shape of a Chinese character 'zhong'. One end of the spring 707 is fixedly connected to the sliding plate 706, and the other end is fixedly connected to the inner wall of the sliding groove 705. The bottom end of the upper cutting knife 708 and the top end of the lower cutting knife 709 extend into the inside of the cutting groove 704.

[0046] Specifically, when the moving platform 703 moves inward, at this time, the pressing inclined block 710 slides obliquely on the inclined surface of the wedge-shaped limiting block 701 and drives the upper cutting knife 708 to move downward and the lower cutting knife 709 to move upward. At this time, the upper cutting knife 708 and the lower cutting knife 709 can drive the sliding plate 706 to move up and down, and then the sliding plate 706 can drive the spring 707 to stretch or contract. Therefore, when the moving platform 703 moves outward, through the deformation of the spring 707, the upper cutting knife 708 can move upward and the lower cutting knife 709 can move downward to return to the original state.

[0047] In this embodiment, the power box body 1 includes a wiring terminal 101, which is installed at the left and right ends of the power box body 1. The outer end of the left wiring terminal 101 is movably connected with a heating tape line 102, and the outer end of the right wiring terminal 101 is movably connected with a cable line 103. A sand discharge valve pipe 104 is installed on the outer bottom surface of the power box body 1, and a circuit board 105 is installed on the inner bottom surface of the power box body 1. A terminal 106 is installed on the circuit board 105. An internal wiring 107 of the heating tape is electrically connected between the left wiring terminal 101 and the terminal 106, and an internal wiring 108 of the cable is electrically connected between the right wiring terminal 101 and the terminal 106.

[0048] For details, please refer to the attached manual. Figure 4 As shown, the heating tape line 102 is connected to the outer end of the left terminal 101, and the inner end of the terminal 101 is connected to the terminal post 106 on the circuit board 105 through the heating tape internal wire 107, the cable line 103 is connected to the outer end of the right terminal 101, and the inner end of the terminal 101 is connected to the terminal post 106 on the circuit board 105 through the cable internal wire 108, so that each wire can be connected to the circuit board 105 inside the power box body 1.

[0049] In this embodiment, the heating tape inner wiring 107 passes through the cut-off groove 704 on the left, and the cable inner wiring 108 passes through the cut-off groove 704 on the right;

[0050] For details, please refer to the attached manual. Figure 4 As shown, at this time, the top of the upper cutting knife 708 and the top of the lower cutting knife 709 move to the inside of the cutting groove 704, so that the heating tape internal wiring 107 and the cable internal wiring 108 inside the cutting grooves 704 on the left and right sides can be cut off by the upper cutting knife 708 and the lower cutting knife 709 on the left and right sides.

[0051] In this embodiment, the sealing structure 5 includes a lower serrated plate 501 and an upper serrated plate 502, the lower serrated plate 501 is fixed to the inner side of the top end of the power box edge 3, the upper serrated plate 502 is fixed to the inner side of the bottom end of the explosion-proof box edge 4, a slot 503 is provided on the outer side of the top end of the power box edge 3 and the outer side of the bottom end of the explosion-proof box edge 4, a dustproof screen plate 504 is installed in the slot 503 on the outer side of the explosion-proof box edge 4, and a drying filter plate 505 is installed in the slot 503 on the inner side of the power box edge 3;

[0052] For details, please refer to the attached manual. Figure 3 As shown, by the lower serrated plate 501 and the upper serrated plate 502 being in close contact with each other, the sealing performance when the power box body 1 and the explosion-proof box body 2 are connected can be improved, and the dustproof mesh plate 504 can prevent external dust from entering the power box body 1 through the gap between the power box edge 3 and the explosion-proof box edge 4, and the drying filter plate 505 can dry out the moisture in the air between the power box edge 3 and the explosion-proof box edge 4.

[0053] In this embodiment, the lower serrated plate 501 and the upper serrated plate 502 are both serrated and matched, the dust screen plate 504 is movably connected to the slot 503 on the outer side of the power box edge 3, and the drying filter plate 505 is movably connected to the slot 503 on the inner side of the explosion-proof box edge 4;

[0054] For details, please refer to the attached manual. Figure 5 And the instruction manual Figure 6 As shown, two groups of slots 503 are opened on the inner and outer sides of the upper surface of the power box side 3 and the bottom surface of the explosion-proof box side 4, and when the bolts and nuts fasten the power box side 3 and the explosion-proof box side 4 to each other, the dustproof mesh plate 504 is inserted into the slot 503 on the outside of the power box side 3, and the drying filter plate 505 is inserted into the slot 503 on the inside of the explosion-proof box side 4, so as to filter the dust and moisture in the gap between the power box side 3 and the explosion-proof box side 4.

[0055] The working principle and use process of the present invention are as follows: the power box edge 3 and the explosion-proof box edge 4 can be fixedly connected to each other by bolts and nuts, and then the power box body 1 and the explosion-proof box body 2 can be fixedly connected to each other. At this time, the lower serrated plate 501 and the upper serrated plate 502 are in close contact with each other, which can improve the sealing performance of the power box body 1 and the explosion-proof box body 2 when they are connected, and when the power box body 1 and the explosion-proof box body 2 are fastened, the power box body 1 and the explosion-proof box body 2 can also be prevented from being misaligned with each other. At the same time, the dustproof mesh plate 504 is inserted into the slot 503 on the outside of the power box edge 3. Therefore, the dustproof mesh plate 504 can prevent external dust from entering the power box body 1 through the gap between the power box edge 3 and the explosion-proof box edge 4, and the drying filter plate 505 is inserted into the slot 503 on the inside of the explosion-proof box edge 4. The drying filter plate 505 can dry out the moisture in the air between the power box edge 3 and the explosion-proof box edge 4 to prevent moisture from entering the power box body 1, thereby improving the safety of the power box body 1 when it is sealed. A dust-free sand pile after washing is piled inside the sand storage prism chamber 606, and the hot air generated by the electrical components on the circuit board 105 floats upward, and can float upward into the explosion-proof box body 2 through the unloading port 607 and the gap between the sand piles, and liquefy into liquid water droplets with the condensation plate 602, and the water droplets can drip downward along the condensation plate 602 into the gap between the sand storage prism 605 and the explosion-proof box body 2, thereby cooling the power box body 1, and at the same time, the heat generated by the circuit board 105 can also heat the explosion-proof box body 2 The inner bottom surface is heated. When the explosion-proof box body 2 is heated, the water droplets dripping between the sand storage platform 605 and the explosion-proof box body 2 can be evaporated, and the evaporated gas can be discharged by the pressure relief valve 601, thereby realizing heat dissipation and pressure relief of the power supply box body 1 and the explosion-proof box body 2. In addition, a small fire alarm arranged inside the power supply box body 1 can detect a fire inside the power supply box body 1. When a fire occurs between the terminal 106 on the circuit board 105, the wiring 107 inside the heating belt, and the wiring 108 inside the cable, the electric rod 702 is first started to extend, and the electric rod 702 drives the two sets of moving platforms 703 to move inwards and approach each other. In the process of the moving platform 703 moving inwards, the upper cutting knife 708 and the lower cutting knife 709 can be pushed to move inwards as well. , and through the oblique guidance of the extrusion oblique block 710 by the oblique surface of the wedge-shaped limit block 701, the upper cutting knife 708 and the lower cutting knife 709 can be moved downward and the lower cutting knife 709 can be moved upward during the inward movement, that is, the upper cutting knife 708 can be moved obliquely downward and the lower cutting knife 709 can be moved obliquely upward. Therefore, by the two groups of upper cutting knives 708 and lower cutting knives 709 approaching each other, the heating tape internal wiring 107 and the cable internal wiring 108 inside the cutting grooves 704 on the left and right sides can be cut off to prevent the fire from spreading outward along the heating tape internal wiring 107 and the cable internal wiring 108. At this time, a cavity is formed between the wedge-shaped limit blocks 701 on the left and right sides and the moving platform 703, and then the unloading electric rod 603 is started to extend.The discharge electric rod 603 can drive the cone net 604 to move downward, so that the cone net 604 moves out to the bottom of the discharge port 607, and the bottom end of the discharge port 607 is opened. At this time, the sand piled inside the sand storage prism chamber 606 can be sprinkled downward onto the circuit board 105 through the discharge port 607, so that the sand pile buries the circuit board 105, the terminal 106, the internal wiring 107 of the heating belt, and the internal wiring 108 of the cable, so that the sand pile fills the wedge-shaped limit blocks 701 on the left and right sides and the movable platform 703. The cavity between the power box body 1 and the explosion-proof box body 2 is formed, so that the power box body 1 can be quickly extinguished to avoid the explosion of the power box body 1 due to the fire, and the safety of the power box body 1 during use is ensured. After the power box body 1 is extinguished, the sand pile can be discharged by opening the sand discharge valve pipe 104. After the power box body 1 and the explosion-proof box body 2 are disassembled, the sand pile inside is cleaned up, and the sand pile is refilled into the sand storage prism cavity 606, and the conical net 604 is used to block it, and then the mobile platform 703 is reset, and the power box body 1 and the explosion-proof box body 2 can be put into use again.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof safety power supply box, comprising a power supply box body (1) and an explosion-proof box body (2), characterized in that: A power box edge (3) is fixed on the power box body (1), and an explosion-proof box edge (4) is fixed on the explosion-proof box body (2); the power box edge (3) and the explosion-proof box edge (4) are fixedly connected to each other by bolts and nuts; a sealing structure (5) is provided between the power box edge (3) and the explosion-proof box edge (4); an explosion-proof structure (6) capable of extinguishing fire is provided inside the explosion-proof box body (2); and a cutting structure (7) capable of cutting off a wire is provided inside the power box body (1); The explosion-proof structure (6) comprises a pressure relief valve (601), the pressure relief valve (601) being mounted on the explosion-proof box body (2), a condensation plate (602) being mounted on the inner top surface of the explosion-proof box body (2), a discharge electric rod (603) being mounted in the middle of the inner top surface of the explosion-proof box body (2), a conical net (604) being fixed at the bottom end of the discharge electric rod (603), a sand storage prism (605) being fixed at the inner bottom surface of the explosion-proof box body (2), a sand storage prism cavity (606) being provided inside the sand storage prism cavity (606), and a discharge opening (607) being provided at the inner bottom end of the sand storage prism cavity (606); The cutting structure (7) comprises a wedge-shaped limit block (701), the wedge-shaped limit block (701) is fixed on the inner top surface and the bottom surface of the power box body (1), a cutting electric rod (702) is installed on the inner side wall of the power box body (1), a moving platform (703) is fixed to the inner end of the cutting electric rod (702), a cutting groove (704) is horizontally opened inside the moving platform (703), and the cutting groove (704) is located inside the moving platform (703). A slide groove (705) is provided on the upper and lower sides of the slide groove (705), a slide plate (706) is slidably arranged inside the slide groove (705), a spring (707) is arranged on the slide plate (706), an upper cutting knife (708) is fixed between the upper slide plates (706), a lower cutting knife (709) is fixed between the lower slide plates (706), and an extrusion inclined block (710) is fixed at the top end of the upper cutting knife (708) and the bottom end of the lower cutting knife (709).

2. The explosion-proof safety power supply box according to claim 1, characterized in that: The power supply box body (1) and the explosion-proof box body (2) are connected via a discharge port (607); the bottom surface of the condensation plate (602) is an inclined surface; and a gap is left between the sand storage prism (605) and the inner wall of the explosion-proof box body (2).

3. The explosion-proof safety power supply box according to claim 1, characterized in that: The conical net (604) is matched with the bottom end of the discharge port (607), the conical net (604) is in the shape of a truncated cone, and a vent hole is provided on the surface of the conical net (604).

4. The explosion-proof safety power supply box according to claim 1, characterized in that: The sand storage cavity (606) is in the shape of a quadrangular pyramid. A dust-free sand pile after washing is arranged inside the sand storage cavity (606). The sand pile is located above the conical net (604). The ventilation aperture size on the conical net (604) is smaller than the size of the sand particles.

5. The explosion-proof safety power supply box according to claim 1, characterized in that: The inclined surface of the mobile station (703) is adapted to the inclined surfaces of the wedge-shaped limit blocks (701) on its upper and lower sides. The discharge opening (607) is located between the left and right groups of mobile stations (703). The extrusion inclined block (710) is adapted to the inclined surfaces of the mobile station (703) and the wedge-shaped limit block (701).

6. The explosion-proof safety power supply box according to claim 1, characterized in that: The chute (705) is in the shape of the Chinese character '中'. One end of the spring (707) is fixedly connected to the slide plate (706), and the other end is fixedly connected to the inner wall of the chute (705). The bottom end of the upper cutting knife (708) and the top end of the lower cutting knife (709) extend into the cutting groove (704).

7. The explosion-proof safety power supply box according to claim 1, characterized in that: The power supply box body (1) includes wiring terminals (101). The wiring terminals (101) are installed at the left and right ends of the power supply box body (1). One outer end of the left wiring terminal (101) is movably inserted with a tracing wire (102), and one outer end of the right wiring terminal (101) is movably inserted with a cable wire (103). A sand discharge valve pipe (104) is installed on the outer bottom surface of the power supply box body (1). A circuit board (105) is installed on the inner bottom surface of the power supply box body (1). A terminal post (106) is installed on the circuit board (105). A tracing wire internal wiring (107) is electrically connected between the left wiring terminal (101) and the terminal post (106), and a cable internal wiring (108) is electrically connected between the right wiring terminal (101) and the terminal post (106).

8. The explosion-proof safety power supply box according to claim 7, characterized in that: The tracing wire internal wiring (107) penetrates through the cutting groove (704) on the left side, and the cable internal wiring (108) penetrates through the cutting groove (704) on the right side.

9. The explosion-proof safety power supply box according to claim 1, characterized in that: The sealing structure (5) includes a lower serrated plate (501) and an upper serrated plate (502). The lower serrated plate (501) is fixed to the inner side of the top end of the power supply box edge (3), and the upper serrated plate (502) is fixed to the inner side of the bottom end of the explosion-proof box edge (4). Slots (503) are provided on the outer side of the top end of the power supply box edge (3) and the outer side of the bottom end of the explosion-proof box edge (4). A dust-proof net plate (504) is installed in the slot (503) on the outer side of the explosion-proof box edge (4), and a drying filter plate (505) is installed in the slot (503) on the inner side of the power supply box edge (3).

10. The explosion-proof safety power supply box according to claim 9, characterized in that: Both the lower serrated plate (501) and the upper serrated plate (502) are serrated and are adapted to each other. The dust-proof net plate (504) is movably inserted into the slot (503) on the outer side of the power supply box edge (3), and the drying filter plate (505) is movably inserted into the slot (503) on the inner side of the explosion-proof box edge (4).

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