Double-cavity sealing explosion-proof lamp for flourmill

Abstract

The invention belongs to the technical field of lighting equipment, and discloses a double-cavity sealing explosion-proof lamp for a flourmill, which comprises a combined cavity positioned at the upper part and a light source cavity positioned at the lower part, the illumination assembly comprises a lamp bead body, a light source circuit board and a storage battery which are sequentially connected, the lamp bead body and the light source circuit board are arranged in the light source cavity, and the storage battery is arranged in the combined cavity; the protective shell is used for clamping the combined cavity and the light source cavity, the sealing assembly comprises an annular sealing structure, an annular locking piece and an abutting assembly, the annular locking piece is arranged on the protective shell to lock the bottom edge structure of the annular sealing structure, and the abutting assembly is used for abutting and sealing the annular sealing structure and the protective shell; the liquid heat dissipation structure is in a spiral shape and can transmit heat generated in the shell to the outside of the protective shell. The protection effect is good, the safety coefficient is higher, the sealing effect of the protection shell can be improved through the arrangement of the sealing assembly, and the safety and stability of the whole lamp are improved through the heat dissipation assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of lighting equipment, and relates to an explosion-proof lamp, in particular to a double-chamber sealed explosion-proof lamp for flour mills. Background Art

[0002] An explosion-proof lamp refers to a lamp used in dangerous places where flammable gases and dust exist, which can prevent electric arcs, sparks and high temperatures that may be generated inside the lamp from igniting the flammable gases and dust in the surrounding environment, thus meeting the explosion-proof requirements. Based on the application characteristics of explosion-proof lamps, they are often used in special fields. According to different usage scenarios, explosion-proof lamps are mainly classified into flameproof explosion-proof lamps, safety explosion-proof lamps, mobile explosion-proof lamps, etc. Explosion-proof platform lamps are applicable to: petrochemical plants, oil platforms, gas stations, oil pump rooms, transfer stations and other flammable and explosive places for lighting, Zone 1 and Zone 2 explosive gas environments, as well as Zone 21 and Zone 22 combustible dust environments, etc.

[0003] For places such as mines and flour mills where the working environment is relatively complex and the requirements for the dust-proof and waterproof sealing performance of explosion-proof lamps are relatively high, the existing explosion-proof lamps use traditional sealing ring processes to achieve the sealing of the product interior. Generally, after manually installing the sealing ring in the set position, subsequent finished product assembly is carried out, which is extremely vulnerable to the influence of manual operations and the product quality of the sealing ring, etc. It is difficult to ensure the quality of the finished product, difficult to meet the sealing requirements, and the yield rate is relatively low. Moreover, the lighting structure and power supply structure of a single-chamber explosion-proof lamp are not separated. When the internal lamp body burns or even explodes, the protection performance is poor. When used in a flour mill, the requirements for the sealing and stability of the explosion-proof lamp are relatively high. Poor sealing is very likely to cause safety accidents, and most explosion-proof lamps only use a solid heat dissipation structure to dissipate heat from the explosion-proof lamp, and the heat dissipation effect is average, and the safety factor of the overall structure is average. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: aiming at the above-mentioned technical defects existing in the use of existing explosion-proof lamps in mines and flour, to provide a double-chamber sealed explosion-proof lamp for flour mills.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A double-chamber sealed explosion-proof lamp for flour mills, comprising: a combined chamber located at the upper part and a light source chamber located at the lower part;

[0007] A lighting assembly, the lighting assembly includes a lamp bead body, a light source circuit board and a storage battery connected in sequence. The lamp bead body and the light source circuit board are arranged in the light source chamber, and the storage battery is arranged in the combined chamber;

[0008] A protective structure, the protective structure includes a protective housing and a sealing component that can be detachably sealed to it. The protective housing is used for clamping the combined cavity and the light source cavity. The sealing component includes an annular sealing structure, an annular locking member, and a pressing component. The annular sealing structure is used to cover the protective housing. The annular locking member is arranged on the protective housing to lock the bottom edge structure of the annular sealing structure. The pressing component is arranged on the annular sealing structure and moves towards one side of the annular locking member to push the annular sealing structure to be tightly pressed against the protective housing for sealing;

[0009] A heat dissipation component, the heat dissipation component includes a liquid heat dissipation structure and a solid heat dissipation structure. The liquid heat dissipation structure is arranged in a spiral shape outside the light source cavity and surrounds the combined cavity, and can transfer the heat generated by the light source circuit board and the storage battery to the outside of the protective housing through the solid heat dissipation structure.

[0010] Preferably, the annular sealing structure is a double-layer structure, including a coupling layer arranged on the outside and a pressing layer arranged on the inside. The coupling layer is connected to the top structure of the pressing layer, and the space formed by the distance between the two is used for clamping the structure at the opening of the protective housing. The top of the pressing layer is provided with a blind groove to connect with the pressing component.

[0011] Preferably, the pressing component includes a pressing member, a screwing rod, and an airbag sealing structure. The pressing member is arranged in the blind groove and internally provided with a threaded structure. The screwing rod is screwed to be threadedly connected with the threaded structure, so as to make the pressing member press against the inner wall of the blind groove.

[0012] Preferably, the airbag sealing structure includes a compressed air chamber and a deformable sealing ring. The compressed air chamber is arranged at the bottom of the blind groove and communicated with the deformable sealing ring. The deformable sealing ring is arranged between the blind groove and the pressing layer. During the process of the screwing rod being threadedly connected with the threaded structure, the compressed air chamber will be squeezed, and the gas will be pressed into the deformable sealing ring, so as to tightly press the protective housing against the pressing layer. The pressing member is integrally annular and composed of two arc-shaped structures, and the two ends of the two arc-shaped structures are arranged at a certain distance.

[0013] Preferably, the coupling layer and the pressing layer are provided with threaded grooves corresponding to the structure on one side of the protective housing for threaded connection with the protective housing. The bottom of the coupling layer is provided with a sealing member and a shallow groove. The sealing member is used for sealing the protective housing, and the shallow groove is for placing the annular locking member.

[0014] Preferably, the structure of the protective housing corresponding to the position of the sealing member is provided with a card slot. The card slot surrounds the protective housing, and the annular locking member is tightened to couple the sealing member with the card slot.

[0015] Preferably, the annular locking member includes an arc-shaped clamping member and an adjusting structure. The number of the arc-shaped clamping members is set to two groups. The adjusting structure is arranged between the two groups of arc-shaped clamping members. The adjusting structure adjusts the distance between the two groups of arc-shaped clamping members through expansion and contraction to tighten the coupling layer and the protective housing.

[0016] Preferably, the liquid heat dissipation structure includes a heat conduction tube and a heat dissipation liquid. The heat dissipation liquid is assembled in the heat conduction tube. The heat conduction tube is arranged in a spiral shape in the light source cavity. A clamping groove is arranged at the center position of the heat conduction tube for clamping the joint cavity.

[0017] Preferably, the solid heat dissipation structure includes a plurality of transfer tubes and heat dissipation fins. The transfer tubes are radially arranged at a certain distance to connect the structures at the bent parts of the heat conduction tube. The transfer tubes are connected to the heat dissipation fins.

[0018] Preferably, the heat dissipation fins are arranged outside the protective housing at a certain distance. An L-shaped fixing piece is arranged inside the protective housing for supporting the heat dissipation assembly. A transparent tempered glass is arranged on one side of the protective housing where the light source cavity is located.

[0019] The present invention adopts the above technical solutions. Compared with the prior art, it has the following technical effects:

[0020] The double-chamber sealed explosion-proof lamp for flour mills provided by the present invention separates the light-emitting structure and the power supply structure by setting a light source cavity and a joint cavity. The double-chamber setting has a higher safety factor and can effectively solve problems such as too high temperature in a single chamber and easy ignition caused by the explosion of the lamp bead body. On the one hand, the protective housing can protect the two chambers, and on the other hand, it can improve the strength of the overall structure, avoiding the explosion and combustion of the internal structure of the chamber from affecting the outside world, and having a higher safety factor. The setting of the sealing component can improve the sealing effect of the protective housing. The tightening component is manually driven to improve the sealing performance of the overall structure after the annular sealing structure is coupled with the protective housing. The liquid heat dissipation structure and the solid heat dissipation structure can increase the contact area with the heat source and dissipate heat by using both liquid and solid, thereby greatly improving the safety and stability of the overall lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the sealing component of a double-chamber sealed explosion-proof lamp for flour mills according to the present invention;

[0022] Figure 2 It is a schematic diagram of the annular sealing structure and the tightening structure of a double-chamber sealed explosion-proof lamp for flour mills according to the present invention;

[0023] Figure 3 It is a schematic diagram of the protective housing of a double-chamber sealed explosion-proof lamp for flour mills according to the present invention;

[0024] Figure 4 Schematic diagram of the protective housing lines of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0025] Figure 5 Three-dimensional view of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0026] Figure 6 Top view of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0027] Figure 7 Cross-sectional view of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0028] Figure 8 Schematic diagram of the combined chamber and light source chamber of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0029] Figure 9 Schematic diagram of the heat dissipation component of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0030] Figure 10 Schematic diagram of the connection between the screwing rod and the pressing member of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0031] Figure 11 Schematic diagram of the annular locking member of a double-chamber sealed explosion-proof lamp for a flour mill according to the present invention;

[0032] Among them, each reference numeral is: 1, combined chamber; 2, light source chamber; 3, lighting component; 301, lamp bead body; 302, light source circuit board; 303, storage battery; 4, protective structure; 401, protective housing; 402, sealing component; 403, annular sealing structure; 404, annular locking member; 405, pressing component; 406, coupling layer; 407, pressing layer; 408, blind groove; 409, pressing member; 410, screwing rod; 411, airbag sealing structure; 412, thread structure; 413, compressed air chamber; 414, deformed sealing ring; 415, arc structure; 416, thread groove; 417, sealing member; 418, shallow groove; 419, card slot; 420, arc clamping member; 421, adjusting structure; 422, L-shaped fixing piece; 423, transparent tempered glass; 5, heat dissipation component; 501, liquid heat dissipation structure; 502, solid heat dissipation structure; 503, heat conduction tube; 504, heat dissipation liquid; 505, clamping groove; 506, transfer tube; 507, heat dissipation fin. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] As shown in the attached Figures 1 to 11 A double-chamber sealed explosion-proof lamp for a flour mill, comprising a combined chamber 1 located in the upper part, a light source chamber 2 located in the lower part, a lighting component 3, a protection structure 4, and a heat dissipation component 5.

[0037] The lighting component 3 includes a lamp bead body 301, a light source circuit board 302, and a storage battery 303 connected in sequence. The lamp bead body 301 and the light source circuit board 302 are arranged in the light source chamber 2, and the storage battery 303 is arranged in the combined chamber 1.

[0038] The protection structure 4 includes a protection housing 401 and a sealing component 402 that can be detachably sealed. The protection housing 401 is used for clamping the combined chamber 1 and the light source chamber 2. The sealing component 402 includes an annular sealing structure 403, an annular locking member 404, and a pressing component 405. The annular sealing structure 403 is used for covering the protection housing 401. The annular locking member 404 is arranged on the protection housing 401 to lock the bottom edge structure of the annular sealing structure 403. The pressing component 405 is arranged on the annular sealing structure 403 and moves towards the side of the annular locking member 404 to push the annular sealing structure 403 to be tightly sealed with the protection housing 401.

[0039] The heat dissipation component 5 includes a liquid heat dissipation structure 501 and a solid heat dissipation structure 502. The liquid heat dissipation structure 501 is arranged in a spiral shape outside the light source chamber 2 and surrounds the combined chamber 1, and can transfer the heat generated by the light source circuit board 302 and the storage battery 303 to the outside of the protection housing 401 through the solid heat dissipation structure 502.

[0040] Among them: The combined chamber 1 and the light source chamber 2 facilitate separating the lighting structure from the structure responsible for power supply. The separated structures are in two chambers. When an explosion or combustion occurs in the structure of one of the chambers, it will not be transmitted to the two chambers or the combustion rate will be delayed. A sealing ring is provided at the coupling between the combined chamber 1 and the light source chamber 2. The sealing ring is made of a fire-separating material. The sealing ring is provided with holes for the wires between the storage battery 303 and the light source circuit board 302 to pass through. The number of holes is adapted to the number of wires. Fire-separating layers are provided on the inner walls of the combined chamber 1 and the light source chamber 2, and the material is selected from non-combustible materials.

[0041] There are multiple groups of lamp bead bodies 301, and a lamp socket structure is provided between them and the light source circuit board 302. The lamp socket structure is provided with lamp slots corresponding to the number of lamp bead bodies 301. The lamp slots can accommodate the lamp bead bodies 301, and are electrically connected to the light source circuit board 302. The light source cavity 2 is provided with a fixing groove for fixing the lamp socket structure. The lamp socket structure can be in contact with the liquid cooling structure 501 to transfer heat. The combined cavity 1 is provided with a mounting groove for fixing the battery 303. The shape of the mounting groove is adapted to that of the battery 303. The mounting groove and the combined cavity 1 are fixed by clamping or plugging. One side of the combined cavity 1 is provided with a sealed hole through which the power supply wire of the battery 303 can pass for subsequent charging of the battery 303.

[0042] The shape of the protective housing 401 is adapted to the shapes of the two cavities. The structure at the top is provided with a mounting opening for mounting the two cavities. The protective housing 401 is provided with a coupling groove adapted to the sizes of the combined cavity 1 and the light source cavity 2. The coupling groove and the protective housing 401 are of an integrally formed structure or fixed by a detachable connection. The detachable connection is clamping or screw connection. One side structure of the protective housing 401 can be opened, and the opened structure is provided with a gasket for sealing. The opened structure facilitates the maintenance and replacement of the structures inside the protective housing 401.

[0043] The sealing assembly 402 is used to cover and seal the structure at the mounting opening. The two sides of the edge structure of the mounting opening are provided with threads. The annular sealing structure 403 is a double-layer structure, including a first coupling part provided on the outside and a second coupling part provided on the inside. The shapes of the two coupling parts are adapted to the shape of the mounting opening. The tops of the two coupling parts are connected, and the bottoms are open. The distance between the two coupling parts forms a clamping space for clamping the mounting opening. The two sides of the mounting opening are provided with threads, and the structures at the corresponding thread positions of the first coupling part and the second coupling part are provided with thread grooves. The annular sealing structure 403 is screwed to make the threads at the mounting opening threadedly connected to the thread grooves. The tightening assembly 405 includes a tightening groove and a tightening structure that are not penetratingly provided at the top of the second coupling part. The tightening groove is annular, and the inner wall is provided with a plurality of protruding structures. The protruding structures and the tightening groove are of an integrally formed structure or fixed by a detachable connection. The detachable connection is screw connection or clamping.

[0044] The tightening structure includes a driving rod and a tightening ring. The tightening ring is composed of two arc-shaped structures. The two ends of the two arc-shaped structures are arranged at a certain distance. Threads are formed on the inner sides of the two arc-shaped structures. The outer structures of the two arc-shaped structures are in contact with the convex structure. An L-shaped fixing member is arranged in the tightening groove to limit the positions of the two arc-shaped structures. The driving rod includes a threaded rod and a labor-saving structure connected to the top of the threaded rod. The threaded rod is used for threaded connection with the threads in the arc-shaped structure. The labor-saving structure includes a fixing block connected to the threaded rod and extension rods arranged around the fixing block. The extension rods can be turned by personnel or machines, thereby driving the threaded rod to rotate so that the whole driving rod moves into the two arc-shaped structures. The two arc-shaped structures are subjected to a force towards the outside of the tightening groove, and then apply a force in the same direction to the convex structure, facilitating the tight sealing between the second coupling part and the protective housing 401.

[0045] The annular locking member 404 is arranged on the first coupling part to lock and seal it with the protective housing 401. An annular groove is arranged at the bottom of the first coupling part. The annular groove surrounds the first coupling part. The annular locking member 404 is arranged in the annular groove. The annular locking member 404 includes a semi-circular clamping structure and a telescopic structure. The number of the semi-circular clamping structures is set to two to clamp the first coupling part and the protective housing 401. The telescopic structure is arranged at the ends of the two semi-circular clamping structures. The telescopic structure includes a fixed rod in the middle and telescopic rods at both ends. The telescopic rods are connected to the semi-circular clamping structures. The distance between the two semi-circular clamping structures can be adjusted by the telescopic movement of the telescopic rods, thereby locking and sealing the first coupling part and the protective housing 401. A locking rod is arranged between the telescopic rod and the fixed rod, and the locking rod can lock the position of the telescopic rod relative to the fixed rod;

[0046] The heat dissipation component 5 is used to transfer the heat generated by the heat-generating structure in the protective housing 401 to the outside of the housing to achieve a heat dissipation effect. The liquid heat dissipation structure 501 includes a spiral tube body and a heat-conducting liquid filled therein. The heat-conducting liquid can be diethylene glycol or silicone oil, etc. The spiral tube body is in contact with the lamp socket structure in the light source cavity 2 to receive the heat generated by the lamp bead body 301 and the light source circuit board 302. The structure at the bending part of the spiral tube body is in close contact with the structure in contact with the light source cavity 2, which is a flat structure to increase the contact area. The structure at the central position of the spiral tube body is provided with a clamping groove to clamp the combined cavity 1, thereby transferring the heat generated by the combined cavity 1. The solid heat dissipation structure 502 includes heat transfer tubes and heat dissipation fins connected thereto. The number of the heat transfer tubes is multiple and arranged radially. The heat transfer tubes can connect the structures at adjacent bending parts of the spiral tube body, thereby improving the heat dissipation effect. At least part of the heat dissipation fins is used as the protective housing 401 to transfer the heat to the outside of the housing. A plurality of fixing clips are arranged in the protective housing 401 to support the spiral tube body and the heat transfer tubes.

[0047] Embodiment 2

[0048] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 11 As shown, see the following description for details:

[0049] As a preferred embodiment, the annular sealing structure 403 is a double-layer structure, including a coupling layer 406 arranged on the outside and a tightening layer 407 arranged on the inside, the coupling layer 406 is connected to the top structure of the tightening layer 407, and the space formed by the distance between the two is used to clamp the structure at the opening of the protective shell 401, and a blind groove 408 is provided on the top of the tightening layer 407 to connect with the tightening component 405; further, the double-layer annular sealing structure 403 is used to cover and seal the structure at the opening of the protective shell 401. The coupling layer 406 and the clamping layer 407 are both annular, the size of the annular space formed by the distance between the two is adapted to the size of the structure at the opening of the protective shell 401, the annular space is sealed, the coupling layer 406 and the clamping layer 407 are an integrally formed structure, the blind groove 408 is a circular groove body, the groove body depth is adapted to the height size of the clamping layer 407, the shape of the blind groove 408 is adapted to the shape of the clamping component 405, and the edge structure of the blind groove 408 is provided with a limiting clamp, and the number of the limiting clamps is multiple groups for limiting the position of the clamping component 405.

[0050] As a preferred embodiment, the tightening assembly 405 includes a tightening member 409, a twisting rod 410 and an airbag sealing structure 411. The tightening member 409 is arranged in the blind groove 408, and a threaded structure 412 is arranged inside. The twisting rod 410 is threadedly connected with the threaded structure 412 by twisting, so that the tightening member 409 is pressed against the inner wall of the blind groove 408; further, the twisting rod 410 is a threaded rod that can be threadedly connected with the threaded structure 412, and a convenient twisting member is arranged on the top of the twisting rod 410. The convenient twisting member includes a fixed block connected to the twisting rod 410, and a toggle rod is arranged around the fixed block. The toggle rod is convenient for personnel or tools to twist the toggle rod. The rotation of the toggle rod drives the twisting rod 410 to move toward the threaded structure 412 and screw in. A fixing part is provided on the inner wall of the blind groove 408. The fixing part can limit the position of the tightening part 409 to prevent the tightening part 409 from being separated from the blind groove 408. The structure of the tightening part 409 located at the threaded structure 412 has a certain deformation ability. When the twisting rod 410 is coupled with the threaded structure 412, a force acting outward from the center of the circle will be applied to the tightening part 409, thereby causing the tightening part 409 to apply a force in the same direction to the blind groove 408 to achieve a tightening effect. When the tightening part 409 moves downward to the bottom of the blind groove 408, it will squeeze the airbag sealing structure 411, and the airbag sealing structure 411 is used for further sealing.

[0051] As a preferred embodiment, the airbag sealing structure 411 includes a compressed air chamber 413 and a deformable sealing ring 414. The compressed air chamber 413 is arranged at the bottom of the blind groove 408 and communicates with the deformable sealing ring 414. The deformable sealing ring 414 is arranged between the blind groove 408 and the pressing layer 407. During the threaded connection between the screwing rod 410 and the threaded structure 412, the compressed air chamber 413 will be squeezed, and the gas will be pressed into the deformable sealing ring 414, thereby pressing the protective housing 401 against the pressing layer 407. The pressing member 409 is integrally annular and composed of two arc-shaped structures 415. The two ends of the two arc-shaped structures 415 are arranged at a certain distance; further, the compressed air chamber 413 is filled with gas, and the edge structure of the compressed air chamber 413 communicates with the deformable sealing ring 414. The inflatable structure of the deformable sealing ring 414 deforms. When the screwing rod 410 is screwed downward, it will gradually connect with the threaded structure 412. The bottom structure of the screwing rod 410 will contact the compressed air chamber 413. When the screwing rod 410 descends to a certain distance, it will squeeze the compressed air chamber 413, and then the gas will be flushed into the deformable sealing ring 414, and the deformable sealing ring 414 will deform, thereby tightly sealing the pressing layer 407 and the protective housing 401, and the sealing effect is stronger. The inner arc structures of the two arc-shaped structures 415 are arranged opposite to each other to share the same center of a circle, and the two enclose a circular structure. The arc-shaped structure 415 has a certain height to increase the contact area with the blind groove 408. The two arc-shaped structures 415 arranged at a certain distance. When the screwing rod 410 moves downward by screwing, it will apply a force to the arc-shaped structure 415 toward the outside of the blind groove 408, thereby pressing the arc-shaped structure 415 against the blind groove 408.

[0052] As a preferred embodiment, the coupling layer 406 and the pressing layer 407 are provided with threaded grooves 416 on the side corresponding to the protective housing 401 for threaded connection with the protective housing 401. A sealing member 417 and a shallow groove 418 are arranged at the bottom of the coupling layer 406. The sealing member 417 is used to seal the protective housing 401, and the shallow groove 418 is for placing the annular locking member 404; further, the structure on both sides of the opening of the protective housing 401 is provided with a threaded section structure that can be threadedly connected with the threaded grooves 416 on the inner sides of the coupling layer 406 and the pressing layer 407. The arrangement of the coupling layer 406 and the pressing layer 407 can clamp and seal the structure on both sides of the opening of the protective housing 401. The sealing member 417 and the coupling layer 406 are integrally formed structures. The sealing member 417 includes an extension part and a connected sealing part. The shallow groove 418 is arranged on the extension part. The size of the shallow groove 418 is adapted to the size of the annular locking member 404 for clamping it. The edge structure of the shallow groove 418 is provided with a detachable limiting block, and the limiting block is used to limit the annular locking member 404 to prevent the two from separating. The sealing part can seal the structure at the connection gap between the coupling layer 406 and the protective housing 401.

[0053] As a preferred embodiment, a clamping groove 419 is provided in the structure of the protective housing 401 corresponding to the position of the seal 417. The clamping groove 419 is arranged around the protective housing 401, and the annular locking member 404 is tightened to couple the seal 417 with the clamping groove 419. Further, the clamping groove 419 is an annular groove arranged around the protective housing 401, and is arranged close to the opening side of the protective housing 401. The groove body of the clamping groove 419 is inclined upward and has a conical shape. The shape of the seal 417 is adapted to the shape of the clamping groove 419. A plurality of small conical grooves are provided on the inner wall of the clamping groove 419, and the seal 417 is provided with protrusions adapted to the small conical grooves. The protrusions will be coupled with the small conical grooves when the seal 417 is coupled with the clamping groove 419. The annular locking member 404 can tightly press and seal the clamping groove 419 and the seal 417 by tightening, and the sealing effect is better.

[0054] As a preferred embodiment, the annular locking member 404 includes an arc-shaped clamping member 420 and an adjusting structure 421. The number of the arc-shaped clamping members 420 is set to two groups. The adjusting structure 421 is arranged between the two groups of arc-shaped clamping members 420. The adjusting structure 421 adjusts the distance between the two groups of arc-shaped clamping members 420 by telescoping to tighten the coupling layer 406 and the protective housing 401. Further, the two groups of arc-shaped clamping members 420 are combined to facilitate tightening and sealing of the coupling layer 406 and the protective housing 401. The combined structure of the two groups of arc-shaped clamping members 420 is annular for clamping and sealing the two. Connecting members are provided at the two end parts of the two groups of arc-shaped clamping members 420 for detachable connection with the adjusting structure 421. The detachable connection is a snap connection or a threaded connection. The adjusting structure 421 includes a fixed part and telescopic parts connected to both sides thereof. The telescopic parts adjust the length of the overall structure by telescoping, and further adjust the distance between the two groups of arc-shaped clamping members 420. Locking rods are provided at corresponding positions of the telescopic parts for locking the telescoped structure. The stability of the overall structure is stronger, and the locking and sealing effect on the coupling layer 406 and the protective housing 401 is better.

[0055] As a preferred embodiment, the liquid heat dissipation structure 501 includes a heat conduction tube 503 and a heat dissipation liquid 504. The heat dissipation liquid 504 is assembled in the heat conduction tube 503. The heat conduction tube 503 is spirally arranged in the light source cavity 2. A clamping groove 505 is provided at the central position of the heat conduction tube 503 for clamping the combined cavity 1. Further, the heat conduction tube 503 is an integrally formed structure. The adjacent annular tube bodies in the spiral shape are in close contact to improve the heat conduction effect. The structure of the heat conduction tube 503 in contact with the light source cavity 2 is a flat structure to increase the contact area and further improve the heat conduction and heat dissipation effect. The heat conduction tube 503 at the central position is provided with L-shaped pieces for clamping the combined cavity 1. The number of L-shaped pieces is set to be multiple groups to increase the contact area with the combined cavity 1, thereby improving the heat conduction effect. Multiple groups of L-shaped pieces form a clamping groove for clamping the combined cavity 1.

[0056] As a preferred embodiment, the solid heat dissipation structure 502 includes a plurality of transfer tubes 506 and heat dissipation fins 507. The transfer tubes 506 are radially arranged at a certain distance to connect the structures at the bent portions of the heat conduction tube 503. The transfer tubes 506 are connected to the heat dissipation fins 507. Further, multiple groups of transfer tubes 506 are arranged at a specific distance. The transfer tubes 506 are circumferentially arranged with the central position of the heat conduction tube 503 as the center of the circle. The structure at the bent portion of the heat conduction tube 503 is provided with multiple communication ports. Each group of transfer tubes 506 can connect the communication port at the central position of the heat conduction tube 503 with the communication port on the outer circumference, so that the overall structure is in a net-like distribution, further improving the heat dissipation and heat conduction effect. The transfer tubes 506 can transfer the received heat to the outside of the protective housing 401 through the heat dissipation fins 507 for heat dissipation.

[0057] As a preferred embodiment, the heat dissipation fins 507 are arranged at a certain distance outside the protective housing 401. An L-shaped fixing piece 422 is provided in the protective housing 401 for supporting the heat dissipation assembly 5. A transparent tempered glass 423 is provided on one side of the protective housing 401 where the light source cavity 2 is located. Further, the heat dissipation fins 507 are in a fish fin shape and are arranged outside the protective housing 401. The material is selected as aluminum. The aluminum heat dissipation fins 507 are used as a part of the protective housing 401. The heat dissipation fins 507 can improve the heat dissipation effect of the protective housing 401. The number of L-shaped fixing pieces 422 is multiple groups for fixing the heat dissipation assembly 5. The L-shaped fixing pieces 422 and the protective housing 401 are fixed by means of threaded connection or clamping. One side structure of the L-shaped fixing piece 422 is used for clamping the heat dissipation assembly 5, and the other side structure is used for supporting it. The transparent tempered glass 423 allows the lamp bead body 301 in the light source cavity 2 to emit light and irradiate the outside. The protective housing 401 is provided with a sealing groove for placing and fixing the transparent tempered glass 423, and the overall structure has good sealing performance.

[0058] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "linked" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0059] Second, in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0060] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-chamber sealed explosion-proof lamp for a flour mill, characterized in that: include: A combined cavity (1) located at the upper part and a light source cavity (2) located at the lower part; An illumination component (3), the illumination component (3) comprising a lamp bead body (301), a light source circuit board (302) and a storage battery (303) connected in sequence, the lamp bead body (302) and the light source circuit board (301) being arranged in the light source cavity (2), and the storage battery (303) being arranged in the combined cavity (1); A protective structure (4), the protective structure (4) comprising a protective shell (401) and a detachable sealing assembly (402) for sealing the protective shell, the protective shell (401) being used for clamping the combined cavity (1) and the light source cavity (2), the sealing assembly (402) comprising an annular sealing structure (403), an annular locking member (404) and a pressing assembly (405), the annular sealing structure (403) being used for covering the protective shell (401), the annular locking member (404) being arranged on the protective shell (401) to lock the bottom edge structure of the annular sealing structure (403), the pressing assembly (405) being arranged on the annular sealing structure (403) and moving toward one side of the annular locking member (404) to thereby push the annular sealing structure (403) and the protective shell (401) to press and seal; A heat dissipation component (5), the heat dissipation component (5) comprising a liquid heat dissipation structure (501) and a solid heat dissipation structure (502), the liquid heat dissipation structure (501) being arranged in a spiral shape outside the light source cavity (2) and surrounding the combined cavity (1), and capable of transferring heat generated by the light source circuit board (302) and the battery (303) to the outside of the protective shell (401) through the solid heat dissipation structure (502).

2. The double-cavity sealed explosion-proof lamp for flour mill according to claim 1, characterized in that: The annular sealing structure (403) is a double-layer structure, including a coupling layer (406) arranged on the outside and a clamping layer (407) arranged on the inside. The coupling layer (406) is structurally connected to the top of the clamping layer (407). The space formed by the distance between the two is used to clamp the structure at the opening of the protective shell (401). A blind groove (408) is provided on the top of the clamping layer (407) to connect with the clamping component (405).

3. The double-chamber sealed explosion-proof lamp for flour mill according to claim 2, characterized in that: The tightening assembly (405) comprises a tightening member (409), a twisting rod (410) and an airbag sealing structure (411); the tightening member (409) is arranged in the blind groove (408) and is provided with a threaded structure (412) inside; the twisting rod (410) is screwed to be threadedly connected with the threaded structure (412), thereby causing the tightening member (409) to tighten against the inner wall of the blind groove (408).

4. The double-chamber sealed explosion-proof lamp for flour mill according to claim 3 is characterized in that: The airbag sealing structure (411) includes a compressed air chamber (413) and a deformable sealing ring (414). The compressed air chamber (413) is arranged at the bottom of the blind groove (408) and is connected to the deformable sealing ring (414). The deformable sealing ring (414) is arranged between the blind groove (408) and the tightening layer (407). During the threaded connection process between the twisting rod (410) and the threaded structure (412), the compressed air chamber (413) is squeezed and the gas is pressed into the deformable sealing ring (414), thereby tightening the protective shell (401) and the tightening layer (407). The tightening member (409) is annular as a whole and consists of two groups of arc structures (415). The two end structures of the two groups of arc structures (415) are arranged at a certain distance.

5. The double-cavity sealed explosion-proof lamp for flour mill according to claim 2, characterized in that: The coupling layer (406) and the abutting layer (407) are provided with a threaded groove (416) on the structure corresponding to one side of the protective shell (401) for threaded connection with the protective shell (401), and a sealing member (417) and a shallow groove (418) are provided at the bottom of the coupling layer (406), wherein the sealing member (417) is used to seal the protective shell (401), and the shallow groove (418) is provided for accommodating the annular locking member (404).

6. The double-cavity sealed explosion-proof lamp for flour mill according to claim 5, characterized in that: The protective shell (401) is provided with a slot (419) at a structure corresponding to the position of the sealing member (417); the slot (419) is arranged around the protective shell (401); and the annular locking member (404) is tightened to couple the sealing member (417) with the slot (419).

7. The double-cavity sealed explosion-proof lamp for flour mill according to claim 1, characterized in that: The annular locking member (404) comprises an arc-shaped clamping member (420) and an adjusting structure (421); the arc-shaped clamping members (420) are provided in two groups; the adjusting structure (421) is provided between the two groups of the arc-shaped clamping members (420); the adjusting structure (421) adjusts the distance between the two groups of the arc-shaped clamping members (420) by telescoping so as to tighten the coupling layer (406) and the protective shell (401).

8. The double-cavity sealed explosion-proof lamp for flour mill according to claim 1, characterized in that: The liquid heat dissipation structure (501) comprises a heat conducting pipe (503) and a heat dissipation liquid (504); the heat dissipation liquid (504) is installed in the heat conducting pipe (503); the heat conducting pipe (503) is spirally arranged in the light source cavity (2); and a clamping groove (505) is provided at the center of the heat conducting pipe (503) for clamping the combined cavity (1).

9. The double-cavity sealed explosion-proof lamp for flour mill according to claim 1, characterized in that: The solid heat dissipation structure (502) comprises a plurality of transfer tubes (506) and heat sinks (507). The transfer tubes (506) are arranged radially at a certain distance to connect the structure at the bending part of the heat conducting tube (503). The transfer tubes (506) are connected to the heat sinks (507).

10. The double-cavity sealed explosion-proof lamp for flour mill according to claim 9, characterized in that: The heat sink (507) is arranged outside the protective shell (401) at a certain distance, an L-shaped fixing plate (422) is arranged inside the protective shell (401) for supporting the heat dissipation assembly (5), and a transparent tempered glass (423) is arranged on one side of the protective shell (401) located at the light source cavity (2).

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