Assembly type explosion-proof firework and cracker storage bin

Abstract

The invention provides an assembly type anti-explosion firework and cracker storage bin. The fireworks are made of polyethylene, the overall mass can be greatly reduced through the arrangement of the water cavity, so that the effects of being convenient to assemble and carry are achieved, and during day and night replacement, the polyethylene can effectively avoid the problems that hot air is pre-cooled and liquefied into water drops, and fireworks explode and are affected with damp; after assembly is completed, the inner space is pumped into the low-pressure storage space through the vacuumizer, due to the fact that air in the low-pressure storage space is thin and contains little water vapor, damp of the fireworks and crackers can be further reduced, the combustion conditions of the fireworks and crackers can also be destroyed, due to the fact that the air is thin and the oxygen content is little, the stacked fireworks and crackers are not prone to exploding, and the fireworks and crackers are not prone to exploding. And meanwhile, municipal tap water is connected to the water injection valve, tap water is injected into the water cavity, the fireworks stacked in the low-pressure storage space are made to explode in the low-temperature environment all the time, and the situation that the fireworks and crackers explode due to the too high temperature can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fireworks and firecrackers storage, and in particular to an assembled explosion-proof fireworks and firecrackers storage bin. Background Art

[0002] As various regions pay more and more attention to the safety of fireworks and firecrackers retail operations, this requires us to scientifically and rationally plan the layout of retail stores, actively promote the use of safe storage warehouses, and continuously improve the safety level and security of retail outlets; In the prior art, fireworks and firecrackers storage boxes / storage bins are made of steel structures. Due to the alternation of day and night, when hot air encounters the steel surface, it is easily liquefied into water droplets due to pre-cooling, causing the fireworks and firecrackers to become damp. Moreover, when the fireworks and firecrackers are stacked and stored, because the fireworks and firecrackers are always in a normal environment (i.e., sufficient oxygen and a relatively high temperature), the fireworks and firecrackers have good ignition conditions at this time, causing the fireworks and firecrackers to easily explode when stored. Therefore, an assembled explosion-proof fireworks and firecrackers storage bin is proposed. Summary of the invention

[0003] In order to solve at least one of the above-mentioned technical shortcomings, the present invention provides an assembled explosion-proof fireworks and firecrackers storage warehouse, including an assembled warehouse body, a temperature and humidity monitoring device for monitoring temperature and humidity is provided in the assembled warehouse body, an alarm device for alarm is provided in the assembled warehouse body, and a plurality of fireworks and firecrackers stacking places assembled by a support base, front and rear side panels, left and right side panels and a top panel are provided in the assembled warehouse body, characterized in that: the support base, front and rear side panels, left and right side panels and the top panel are all made of polyethylene, the upper surface of the support base is sealed and assembled with two front and rear side panels and two left and right side panels, the top of the front and rear side panels and the left and right side panels are sealed and assembled with a top panel, a low-pressure storage space is formed between the support base, the front and rear side panels, the left and right side panels and the top panel, water cavities are opened inside the support base, the front and rear side panels, the left and right side panels and the top panel, water injection valves connected to the water cavities are provided on the support base, the front and rear side panels, the left and right side panels and the top panel, and negative pressure valves connected to the low-pressure storage space are provided on the front and rear side panels.

[0004] Furthermore, the support base includes a bottom plate made of polyethylene, the water cavity is arranged inside the bottom plate, and the four corners of the lower surface of the bottom plate are integrally connected with clamping rods.

[0005] Furthermore, the support base also includes two cross-arranged reinforcing ribs, the lower surfaces of both ends of the reinforcing ribs are integrally connected with support feet supported on the ground, and the upper surfaces of both ends of the reinforcing ribs are provided with clamping holes that are sleeved with the clamping rods.

[0006] Furthermore, a sealing groove is opened on the edge of the upper surface of the bottom plate, and a sealing strip is provided inside the sealing groove. A splicing groove is provided at the connection between the front and rear side panels and the left and right side panels, and a sealing strip is provided inside the splicing groove. The bottoms of the front and rear side panels and the left and right side panels are provided with sealing blocks that are seal-connected to the sealing groove. Both ends of the left and right side panels are provided with sealing blocks that are seal-connected to the splicing groove. Tenon slopes are provided on the top outer edges of the front and rear side panels and the left and right side panels, and a connecting slope that matches the tenon slope is provided on the lower surface of the top plate, and a sealing strip is provided at the connection between the lower surface of the top plate and the tops of the front and rear side panels and the left and right side panels.

[0007] Furthermore, the bottom wall of the water cavity is arranged to be inclined, and the water injection valve is located at the bottom of the inclined bottom wall of the water cavity.

[0008] Preferably, the water injection valve comprises a water injection valve body and a water injection valve core, the water injection valve body comprises a support plate, the support plate is supported on the inner wall of the water chamber, an angle plate arranged at 90° is integrally connected to the surface of one side of the support plate, a sealing tube 1 is integrally connected to the top of the angle plate, a limiting ring is provided at the outer end of the inner wall of the sealing tube 1, the water injection valve core comprises a circular plate supported on the surface of the support plate, a water injection spring is integrally connected to the surface of the circular plate, a sealing cylinder is integrally connected to the other end of the water injection spring, the sealing cylinder is sealingly sleeved inside the sealing tube 1, a connecting tube for sleeved on the inner wall of the water pipe is provided on the inner side of the top of the sealing cylinder, and a plurality of penetrating water inlet gaps are provided on the outer wall of the sealing cylinder.

[0009] Preferably, the negative pressure valve includes an exhaust valve body and an exhaust valve core, the exhaust valve body includes an outer tube, the interior of the outer tube is integrally connected with an inner tube, the opening of the inner tube faces inward, the outer wall of the outer end of the inner tube is evenly provided with air intake notches, the inner wall of the outer tube is symmetrically provided with slide grooves, the exhaust valve core includes an exhaust spring sleeved on the outer wall of the inner tube, the end of the exhaust spring is provided with a sealing tube 2 which is sealingly sleeved on the outer wall of the outer end of the inner tube, the outer wall end of the sealing tube 2 is provided with a support ring, the outer wall of the support ring is provided with two symmetrical limit blocks which slide in the slide groove, and the outer end of the inner wall of the outer tube is provided with a rotating groove for the rotation of the limit block.

[0010] Furthermore, a mercury thermometer connected to the water cavity is provided on the outer walls of the front and rear side plates.

[0011] Furthermore, a metal mesh covering the fireworks is provided inside the low-pressure storage space, and the metal mesh is grounded through a wire. Beneficial Effects

[0012] Compared with the prior art, the present invention is made of polyethylene and can greatly reduce the overall mass through the setting of the water cavity, thereby achieving the effect of facilitating assembly and transportation. Compared with metal and steel, polyethylene can effectively prevent hot air from being pre-cooled and liquefied into water droplets during the alternation of day and night, causing the problem of fireworks exploding and being damp. After the assembly is completed, the internal space is evacuated into a low-pressure storage space by a vacuum machine. Since the air inside the low-pressure storage space is thin and contains less water vapor, the dampness of fireworks and firecrackers can be further reduced, and the conditions for the combustion of fireworks and firecrackers can be destroyed. Since the air is thin and contains less oxygen, the stacked fireworks and firecrackers are less likely to explode, thereby achieving the effect of preventing explosion. At the same time, municipal tap water is connected to the water injection valve, and tap water is injected into the water cavity, so that the fireworks stacked inside the low-pressure storage space are always in a low-temperature environment, thereby avoiding the explosion of fireworks and firecrackers caused by excessively high temperature.

[0013] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the whole of the present invention.

[0015] Figure 2 It is a schematic diagram of the assembly of the top plate of the present invention.

[0016] Figure 3 It is an axonometric view of the reinforcing rib of the present invention.

[0017] Figure 4 It is an axonometric view of the base plate of the present invention.

[0018] Figure 5 It is an axonometric view of the front and rear side panels of the present invention.

[0019] Figure 6 It is a cross-sectional view of the front and rear side panels of the present invention.

[0020] Figure 7 It is an axonometric view of the left and right side panels of the present invention.

[0021] Figure 8 It is an axonometric view of the top plate of the present invention.

[0022] Fig. 9 It is an axonometric view of the water injection valve of the present invention.

[0023] Fig.10 It is an axonometric view of the water injection valve core of the present invention.

[0024] Fig.11 It is an axonometric view of the water injection valve body of the present invention.

[0025] Fig.12 It is a cross-sectional view of the water injection valve of the present invention.

[0026] Fig.13 It is an axonometric view of the negative pressure valve of the present invention.

[0027] Fig.14 It is an axonometric view of the air extraction valve core of the present invention.

[0028] Fig.15 It is a cross-sectional view of the negative pressure valve of the present invention.

[0029] exist Figures 1 to 15 , the corresponding relationship between the component names or lines and the figure numbers is: support base 1, support foot 101, reinforcement rib 102, clamping hole 103, bottom plate 104, clamping rod 105, sealing groove 106, front and rear side plates 2, splicing groove 201, sealing strip 202, mortise slope 203, sealing block 204, water cavity 205, left and right side plates 3, top plate 4, connecting slope 401, sealing belt 402, water injection valve 5, water injection valve body 501, support plate 511, angle plate 512 , sealing tube 1 513, limiting ring 514, water injection valve core 502, circular plate 521, water injection spring 522, sealing tube 523, connecting pipe 524, water inlet gap 525, negative pressure valve 6, air extraction valve body 601, outer tube 611, inner tube 612, air inlet gap 613, slide groove 614, air extraction valve core 602, air extraction spring 621, sealing tube 2 622, supporting ring 623, limiting block 624, assembled warehouse body 7, temperature and humidity monitoring device 8, alarm device 9. DETAILED DESCRIPTION

[0030] Please refer to Figures 1 to 15 ; This embodiment provides an assembled explosion-proof fireworks and firecrackers storage bin, referring to Figure 1 , including an assembled warehouse body 7, a temperature and humidity monitoring device 8 for monitoring temperature and humidity is provided in the assembled warehouse body 7, an alarm device 9 for alarming is provided in the assembled warehouse body 7,, a plurality of fireworks and firecrackers stacking places assembled by a support base 1, front and rear side panels 2, left and right side panels 3 and a top panel 4 are provided in the assembled warehouse body 7, reference Figures 2 to 8 The support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4 are all made of polyethylene. The upper surface of the support base 1 is sealed and assembled with two front and rear side panels 2 and two left and right side panels 3. The top of the front and rear side panels 2 and the left and right side panels 3 is sealed and assembled with a top panel 4. A low-pressure storage space is formed between the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4. A water cavity 205 is opened inside the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4. A water injection valve 5 connected to the water cavity 205 is provided on the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4. A negative pressure valve 6 connected to the low-pressure storage space is provided on the front and rear side panels 2; In the specific implementation, the assembled warehouse body 7, the temperature and humidity monitoring device 8 and the alarm device 9 all adopt the existing technology. The support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4 are made of polyethylene, so that the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4 are light in weight, and the weight can be further reduced by setting the water cavity 205, which is convenient for assembly and transportation. At the same time, it can effectively avoid the problem of hot air being pre-cooled and liquefied into water droplets during the alternation of day and night, causing the fireworks to explode and get damp. After completing the assembly of the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4, the vacuum pump is connected to the negative pressure valve 6, and the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4 are vacuumed by the vacuum pump. The inner space of the plate 2, the left and right side plates 3 and the top plate 4 is evacuated into a low-pressure storage space. Since the air inside the low-pressure storage space is thin and contains less water vapor, the moisture of fireworks and firecrackers can be further reduced, and the conditions for the combustion of fireworks and firecrackers can be destroyed. Since the air is thin and contains less oxygen, the stacked fireworks and firecrackers are less likely to explode, thereby achieving the effect of preventing explosion. At the same time, municipal tap water is connected to the water injection valve 5, and tap water is injected into the water cavity 205 inside the supporting base 1, the front and rear side plates 2, the left and right side plates 3 and the top plate 4, so that the fireworks stacked inside the low-pressure storage space are always in a low-temperature environment, which can avoid the explosion of fireworks and firecrackers caused by excessively high temperature; Low temperature environment: compared with the ambient temperature; When the explosion occurs due to reasons other than temperature (such as artificial ignition or lightning strike, etc.), the support base 1, front and rear side panels 2, left and right side panels 3 and top panel 4 made of polyethylene are damaged by the explosion, and the tap water in the water cavity 205 flows out to wet the fireworks and firecrackers that have not exploded, thereby avoiding further explosions.

[0031] Further, referring to FIG. 4 , the support base 1 includes a bottom plate 104 made of polyethylene, a water cavity 205 is arranged inside the bottom plate 104 , and a clamping rod 105 is integrally connected to the four corners of the lower surface of the bottom plate 104 ; During specific implementation, the clamping rod 105 is placed on the ground, and fireworks and firecrackers are piled on the surface of the bottom plate 104 .

[0032] For further reference, Figure 3 The support base 1 also includes two cross-arranged reinforcing ribs 102, the lower surfaces of both ends of the reinforcing ribs 102 are integrally connected with supporting feet 101 supported on the ground, and the upper surfaces of both ends of the reinforcing ribs 102 are provided with clamping holes 103 sleeved with the clamping rods 105; In a specific implementation, by providing the reinforcing ribs 102 , the central area of ​​the bottom plate 104 is reinforced and supported by the reinforcing ribs 102 , and the bottom plate 104 can be completely clamped on the upper surface of the reinforcing ribs 102 through the clamping holes 103 .

[0033] For further reference, Figures 4 to 8 A sealing groove 106 is provided on the upper surface edge of the bottom plate 104, and a sealing strip is provided inside the sealing groove 106. A splicing groove 201 is provided at the connection between the front and rear side panels 2 and the left and right side panels 3, and a sealing strip 202 is provided inside the splicing groove 201. A sealing block 204 is provided at the bottom of the front and rear side panels 2 and the left and right side panels 3, and a sealing block 204 is provided at both ends of the left and right side panels 3, and a mortise slope 203 is provided on the top outer edges of the front and rear side panels 2 and the left and right side panels 3. A connecting slope 401 that fits the mortise slope 203 is provided on the lower surface of the top plate 4, and a sealing strip 402 is provided at the connection between the lower surface of the top plate 4 and the tops of the front and rear side panels 2 and the left and right side panels 3; In the specific implementation, after the support base 1 is assembled, the fireworks and firecrackers are stacked on the support base 1. After the fireworks and firecrackers are stacked, the front and rear side panels 2 are assembled with the left and right side panels 3. The sealing blocks 204 at both ends of the left and right side panels 3 are first sealed and connected with the splicing grooves 201. At the same time, the sealing blocks 204 at the bottom of the front and rear side panels 2 and the left and right side panels 3 are connected with the sealing grooves 106. Then, the top panel 4 is covered on the top of the front and rear side panels 2 and the left and right side panels 3, so that the connecting slope 401 is matched with the mortise slope 203. At this time, the assembly is completed, and the internal space environment is still the same as the external environment. Then, a vacuum pump is connected to the negative pressure valve 6, and the internal space of the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4 is evacuated into a low-pressure storage space by the vacuum pump, so that the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4 are more tightly connected under the action of atmospheric pressure; Then connect municipal tap water to the water injection valve 5, and inject tap water into the water cavity 205 inside the support base 1, the front and rear side panels 2, the left and right side panels 3 and the top panel 4, so that the fireworks stacked inside the low-pressure storage space are always in a low-temperature environment.

[0034] Furthermore, the bottom wall of the water chamber 205 is inclined, and the water injection valve 5 is located at the bottom of the inclined bottom wall of the water chamber 205; In specific implementation, when fireworks and firecrackers need to be taken out, the water in the water cavity 205 is first released, and the water can flow out naturally through the setting of the inclined bottom wall.

[0035] Preferably, reference Figures 9 to 12The water injection valve 5 includes a water injection valve body 501 and a water injection valve core 502. The water injection valve body 501 includes a support plate 511. The support plate 511 is supported on the inner wall of the water chamber 205. An angle plate 512 arranged at 90 degrees is integrally connected to the surface of one side of the support plate 511. A sealing tube 513 is integrally connected to the top of the angle plate 512. A limiting ring 514 is provided at the outer end of the inner wall of the sealing tube 513. The water injection valve core 502 includes a circular plate 521 supported on the surface of the support plate 511. A water injection spring 522 is integrally connected to the surface of the circular plate 521. A sealing cylinder 523 is integrally connected to the other end of the water injection spring 522. The sealing cylinder 523 is sealingly sleeved inside the sealing tube 513. A connecting pipe 524 for sleeved on the inner wall of the water pipe is provided on the inner side of the top of the sealing cylinder 523. A plurality of penetrating water inlet notches 525 are opened on the outer wall of the sealing cylinder 523. During specific implementation, when the municipal water pipe is connected to the water injection valve 5, the end of the water pipe is put on the connecting pipe 524 and pressed down with force so that the sealing cylinder 523 presses down the water injection spring 522, so that the outer wall of the sealing cylinder 523 is separated from the inner wall of the sealing tube 513, so that the tap water flowing in from the water pipe can flow in through the water inlet gap 525. After the water injection is completed, the outer wall of the sealing cylinder 523 is sealed and connected with the inner wall of the sealing tube 513 through the elastic force of the water injection spring 522.

[0036] Preferably, reference Figures 13 to 15 The negative pressure valve 6 includes an air extraction valve body 601 and an air extraction valve core 602. The air extraction valve body 601 includes an outer tube 611. The inner tube 611 is integrally connected with an inner tube 612. The opening of the inner tube 612 faces inward. The outer wall of the outer end of the inner tube 612 is evenly provided with air intake notches 613. The inner wall of the outer tube 611 is provided with symmetrically arranged slide grooves 614. The air extraction valve core 602 includes an air extraction spring 621 sleeved on the outer wall of the inner tube 612. The end of the air extraction spring 621 is provided with a sealing tube 622 which is sealingly sleeved on the outer wall of the outer end of the inner tube 612. A support ring 623 is provided at the outer wall end of the sealing tube 622. The outer wall of the support ring 623 is provided with two symmetrical limit blocks 624 sliding in the slide groove 614. The outer end of the inner wall of the outer tube 611 is provided with a rotating groove for the rotation of the limit block 624. In the specific implementation, when pumping negative pressure, the vacuum pump is connected to the negative pressure valve 6, so that the suction pipe of the vacuum pump is supported on the outer end surface of the support ring 623 and is sleeved on the outer periphery of the inner tube 612. The suction pipe is rotated, and under the action of friction, the support ring 623 is driven to rotate, so that the limit block 624 rotates inside the rotating groove until it is flush with the slide groove 614, and is pressed down to press the limit block 624 into the interior of the slide groove 614, so that the air pumping spring 621 is compressed, and the inner wall of the sealing tube 622 is separated from the air inlet notch 613 at the top of the outer wall of the inner tube 612, so that the suction pipe can suck out the air from the air inlet notch 613 through the opening of the inner tube 612.

[0037] Further, a mercury thermometer connected to the water cavity 205 is provided on the outer wall of the front and rear side plates 2; In specific implementation, the mercury thermometer adopts the existing technology and monitors the temperature through the mercury thermometer.

[0038] Furthermore, a metal mesh covering the fireworks is provided inside the low-pressure storage space, and the metal mesh is grounded via a wire; In specific implementation, the setting of metal mesh and wire grounding can effectively avoid explosion caused by static electricity generated during the transportation of fireworks and firecrackers.

Claims

1. An assembled explosion-proof fireworks and firecrackers storage warehouse, comprising an assembled warehouse body (7), a temperature and humidity monitoring device (8) for monitoring temperature and humidity is provided in the assembled warehouse body (7), an alarm device (9) for alarm is provided in the assembled warehouse body (7), and a plurality of fireworks and firecrackers stacking places assembled by a support base (1), front and rear side panels (2), left and right side panels (3) and a top panel (4) are provided in the assembled warehouse body (7), characterized in that: The support base (1), front and rear side panels (2), left and right side panels (3) and top panel (4) are all made of polyethylene; the upper surface of the support base (1) is sealed and assembled with two front and rear side panels (2) and two left and right side panels (3); the top of the front and rear side panels (2) and the left and right side panels (3) is sealed and assembled with a top panel (4); a low-pressure storage space is formed between the support base (1), the front and rear side panels (2), the left and right side panels (3) and the top panel (4); a water cavity (205) is opened inside the support base (1), the front and rear side panels (2), the left and right side panels (3) and the top panel (4); a water injection valve (5) connected to the water cavity (205) is provided on the support base (1), the front and rear side panels (2), the left and right side panels (3) and the top panel (4); and a negative pressure valve (6) connected to the low-pressure storage space is provided on the front and rear side panels (2).

2. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 1, characterized in that: The support base (1) comprises a bottom plate (104) made of polyethylene, the water cavity (205) is arranged inside the bottom plate (104), and the four corners of the lower surface of the bottom plate (104) are integrally connected with clamping rods (105).

3. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 2, characterized in that: The support base (1) further comprises two reinforcing ribs (102) arranged in a cross-like manner, the lower surfaces of both ends of the reinforcing ribs (102) being integrally connected with support feet (101) supported on the ground, and the upper surfaces of both ends of the reinforcing ribs (102) being provided with clamping holes (103) sleeved with the clamping rods (105).

4. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 3, characterized in that: The upper surface edge of the bottom plate (104) is provided with a sealing groove (106), and the sealing groove (106) is provided with a sealing strip inside. The front and rear side plates (2) and the left and right side plates (3) are connected at a joint groove (201), and the joint groove (201) is provided with a sealing strip (202). The bottoms of the front and rear side plates (2) and the left and right side plates (3) are provided with a sealing block (204) that is sealed and connected to the sealing groove (106). Both ends of the left and right side plates (3) are provided with a sealing block (204) that is sealed and connected to the joint groove (201). The top outer edges of the front and rear side plates (2) and the left and right side plates (3) are provided with a mortise slope (203). The lower surface of the top plate (4) is provided with a connecting slope (401) that matches the mortise slope (203). The lower surface of the top plate (4) and the tops of the front and rear side plates (2) and the left and right side plates (3) are connected at a sealing strip (402).

5. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 4, characterized in that: The bottom wall of the water chamber (205) is arranged to be inclined, and the water injection valve (5) is located at the bottom of the inclined bottom wall of the water chamber (205).

6. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 5, characterized in that: The water injection valve (5) comprises a water injection valve body (501) and a water injection valve core (502). The water injection valve body (501) comprises a support plate (511). The support plate (511) is supported on the inner wall of the water cavity (205). An angle plate (512) arranged at 90 degrees is integrally connected to a surface of one side of the support plate (511). A sealing tube (513) is integrally connected to the top of the angle plate (512). A limiting ring (514) is provided at the outer end of the inner wall of the sealing tube (513). The water injection valve core (502) is provided with a support plate (511). ) comprises a circular plate (521) supported on the surface of a support plate (511), a water injection spring (522) being integrally connected to the surface of the circular plate (521), a sealing cylinder (523) being integrally connected to the other end of the water injection spring (522), the sealing cylinder (523) being sealingly sleeved inside a sealing tube (513), a connecting tube (524) for sleeved on the inner wall of a water pipe being provided on the inner side of the top of the sealing cylinder (523), and a plurality of penetrating water inlet notches (525) being provided on the outer wall of the sealing cylinder (523).

7. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 5, characterized in that: The negative pressure valve (6) comprises an air extraction valve body (601) and an air extraction valve core (602). The air extraction valve body (601) comprises an outer tube (611). The inner part of the outer tube (611) is integrally connected with an inner tube (612). The opening of the inner tube (612) faces inward. The outer end outer wall of the inner tube (612) is evenly provided with air intake notches (613). The inner wall of the outer tube (611) is provided with symmetrically arranged sliding grooves (614). The air extraction valve core (602) comprises a sleeve on the inner tube (611). 2) an air extraction spring (621) on the outer wall, the end of the air extraction spring (621) is provided with a sealing tube 2 (622) which is sealingly sleeved on the outer wall of the outer end of the inner tube (612), the outer wall end of the sealing tube 2 (622) is provided with a support ring (623), the outer wall of the support ring (623) is provided with two symmetrical limit blocks (624) which slide inside the slide groove (614), and the outer end of the inner wall of the outer tube (611) is provided with a rotation groove for the limit block (624) to rotate.

8. An assembled explosion-proof fireworks and firecrackers storage warehouse according to claim 6 or 7, characterized in that: A mercury thermometer connected to the water cavity (205) is provided on the outer walls of the front and rear side plates (2).

9. The assembled explosion-proof fireworks and firecrackers storage bin according to claim 8, characterized in that: A metal mesh covering the fireworks is provided inside the low-pressure storage space, and the metal mesh is grounded through a wire.

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