A safety aerosol container for storing fuel and a method of using the same

Abstract

The application belongs to the technical field of aerosol cans, and particularly relates to a fuel storage safety aerosol can and a use method thereof. The aerosol can comprises a can body, the inside of the can body is filled with effective components and boost gas, a pressure buffer device is arranged at the top of the inside space of the can body, the pressure buffer device is provided with a gas temporary storage bin, the bottom of the pressure buffer device is provided with a gas inlet communicated with the gas temporary storage bin, the gas temporary storage bin is also provided with a gas outlet at the bottom of the pressure buffer device, the pressure buffer device further comprises a one-way conduction assembly for controlling one-way conduction of the gas inlet and the gas outlet, and the pressure buffer device further comprises a backfill assembly for filling the boost gas entering the gas temporary storage bin through the gas inlet into the can body through the gas outlet. The application can not only release pressure under the high pressure state of the aerosol can, but also send the released boost gas back into the aerosol can under the stable state, and has the functions of instantaneous pressure protection and instantaneous pressure release of the aerosol can.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol cans, in particular to a fuel storage safety aerosol can and a use method thereof. BACKGROUND

[0002] The fuel aerosol can is a can capable of storing fuel, which generally refers to a complete pressure packaging container composed of a spray head, a valve, a can body and an inner content (including a product, a propellant and the like); in the prior art, the content in the can body usually includes an effective component and a propellant or a propellant gas generated by the effective component under shaking; the propellant is a gas used to push the effective component out; the aerosol can pushed by the propellant is filled with a certain amount of propellant (compressed gas) in the production process to realize the pushing out of the effective component, such as a lantern pot; in order to ensure that the effective component in the aerosol can can be completely pushed out before leaving the factory, the aerosol can is in a high pressure state; during transportation and use, due to various objective unpredictable reasons, such as high temperature, collision and the like, the internal pressure of the can body is often too large, causing the top cover and the bottom cover to fall off from the can body, and even causing accidents such as explosion of the can, resulting in personnel injury and death, which has a great risk and a low safety technical problem.

[0003] As disclosed in the publication No. CN114811403A, a fuel gas aerosol can with high safety, when the internal pressure of the aerosol can is increased due to external factors, the high pressure generated in the can pushes the piston plate to move upward, and part of the boost gas is introduced into the annular cavity through the first channel, thereby achieving the effect of active pressure relief of the aerosol can, so as to ensure that the internal pressure of the aerosol can returns to a stable state; finally, the boost gas stored in the annular cavity is sprayed out of the can together with the active ingredients when the aerosol can is used. However, in the actual use process of the above-mentioned patent, in order to avoid the active pressure relief of the aerosol can due to the excessive internal pressure caused by external factors during transportation and use, such as pressure relief of the torch pot type aerosol can, although the technical problem of can explosion and rupture caused by excessive internal pressure can be effectively avoided, during the active pressure relief process, the internal pressure of the aerosol can body is separated from external factors such as high temperature, which causes the problem of internal pressure rise. When the high-temperature aerosol can returns to the normal state, the boost gas content in the aerosol can at this time is far less than the gas content when it leaves the factory, which means that the gas in the can at this time cannot support all the active ingredients in the can to be pushed out, which will cause a large amount of waste, and the active ingredients not completely discharged from the can body will also cause safety hazards during subsequent recycling of the can body. Furthermore, if the can body is subjected to severe extrusion due to external factors, this is the main reason for the explosion of the can body. The above-mentioned patent cannot withstand the instantaneous pressure generated in the can body at the moment (i.e. the can body is greatly deformed), and does not have the ability to instantaneously relieve pressure, and can only relieve the pressure of the can body caused by factors such as high temperature or violent shaking, which has a design defect. SUMMARY

[0004] To solve the above-mentioned problems, the present application provides a device and a method for using the device, which can not only relieve the pressure of the can body when the internal pressure of the aerosol can is too high due to external factors, but also can send the boost gas back into the aerosol can when the aerosol can is in a static state or a safe environment, thereby solving the technical problems of waste caused by insufficient internal pressure of the aerosol can and inability to instantaneously relieve the pressure of the aerosol can during pressure relief of the aerosol can in the prior art.

[0005] To solve the above-mentioned problems, the present application provides a device and a method for using the device, which can not only relieve the pressure of the can body when the internal pressure of the aerosol can is too high due to external factors, but also can send the boost gas back into the aerosol can when the aerosol can is in a static state or a safe environment, thereby solving the technical problems of waste caused by insufficient internal pressure of the aerosol can and inability to instantaneously relieve the pressure of the aerosol can during pressure relief of the aerosol can in the prior art.

[0006] The pressure buffering device further comprises a one-way valve assembly for controlling the one-way conduction of the air inlet and the air outlet.

[0007] The pressure buffering device further comprises a back-filling assembly for filling the boost gas in the gas temporary storage chamber into the tank through the air outlet.

[0008] Preferably, the back-filling assembly comprises a piston arranged in the gas temporary storage chamber and capable of moving in the vertical direction, the top of the piston is provided with a control rod which extends upwardly to the outside of the tank, the piston divides the internal space of the gas temporary storage chamber into an upper chamber and a lower chamber, the upper chamber is provided with a pressure spring sleeved on the control rod;

[0009] The control rod is a hollow rod, the lower end side wall of the control rod is provided with a lower exhaust hole, and the top of the control rod is provided with an upper exhaust hole.

[0010] The air inlet and the air outlet are both communicated with the lower chamber, and the one-way valve assembly for controlling the one-way conduction of the air inlet and the air outlet is a one-way valve.

[0011] Preferably, the back-filling assembly further comprises a valve plate arranged in the bottom of the internal space of the gas temporary storage chamber and capable of rotating around the axis of the control rod, the control rod is provided with an inner rod fixedly connected with the valve plate and penetrating through the piston, the top of the inner rod protrudes from the top of the control rod, and the valve plate is provided with a control hole.

[0012] Preferably, the air inlet is arranged at the bottom of the lower chamber.

[0013] Preferably, the bottom edge of the lower chamber is provided with a limiting edge, and the edge of the valve plate is embedded below the limiting edge.

[0014] Preferably, the outer wall of the inner rod is sealingly connected with the piston through a sealing shaft sleeve.

[0015] Preferably, the tank is provided with a first circular table, the top of the control rod penetrates through the first circular table and is exposed above the first circular table, and the back-filling assembly further comprises a gland screw-connected on the first circular table, when the gland is threadedly matched with the first circular table, the top of the control rod is arranged in the gland.

[0016] Preferably, the gland is provided with a through hole for the inner rod to penetrate.

[0017] Preferably, the tank is provided with a second circular table, the top of the inner rod is provided with a pointer, the second circular table is provided with a first mark and a second mark,

[0018] When the inner rod is rotated to align the pointer with the position of the first mark, the control hole is communicated with the air inlet;

[0019] When the inner rod is rotated to align the pointer with the position of the second mark, the control hole is communicated with the air outlet.

[0020] The method for using the safe aerosol can for storing fuel comprises the following steps: pressure relief: when the aerosol can is loaded into a vehicle after leaving the factory, the piston 41 moves to the lowest position in the temporary gas storage chamber 21 under the action of the pressure spring 43, the control hole 441 is communicated with the gas inlet 22 by rotating the inner rod 45;

[0021] Pressure relief gas recharging: when the pressure in the can body 1 increases during transportation, the boost gas enters the lower chamber and overcomes the compression force of the compression spring to lift the piston 41, the control hole 441 is communicated with the gas outlet 23 by rotating the inner rod 45, and then the piston 41 is compressed by driving the control rod 42 downward under the action of external pressure, so that the boost gas in the lower chamber returns to the can body 1 through the gas outlet 23.

[0022] The beneficial effects of the present application compared with the prior art are:

[0023] The present application realizes how to actively relieve the pressure in the can body when the pressure is high, and temporarily stores the boost gas after pressure relief by cooperating with the temporary gas storage chamber, realizes how to actively protect the can body from overload, realizes how to re-push the boost gas stored in the temporary gas storage chamber back into the can under stable state of the can body through the recharging assembly, and realizes the re-pressurization of the can body after pressure loss. The technical problem of waste of effective components caused by the fact that the effective components cannot be completely pushed out due to low pressure in the can. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a top view of a safe aerosol can for storing fuel.

[0025] Figure 2 It is Figure 1 A-A sectional perspective view of the present application.

[0026] Figure 3 It is a partial structure side view of a safe aerosol can for storing fuel Figure 1 .

[0027] Figure 4 It is Figure 3 B-B sectional view of the present application.

[0028] Figure 5 It is a partial structure side view of a safe aerosol can for storing fuel Figure 2 .

[0029] Figure 6 It is Figure 5 D-D sectional perspective view of the present application.

[0030] Figure 7 It is a partial structure exploded perspective view of a safe aerosol can for storing fuel.

[0031] Figure 8 is a part structure side view of a gas aerosol can with high safety for storing fuel Figure 3 .

[0032] Figure 9 is Figure 8 a cross-sectional view at C-C of

[0033] Figure 10 is a part structure perspective view of a gas aerosol can with high safety for storing fuel

[0034] Reference numerals in the drawings are:

[0035] 1, can body; 11, first circular platform; 111, gland; 112, perforation; 12, second circular platform; 121, first mark; 122, second mark;

[0036] 2, pressure buffering device; 21, gas temporary storage bin; 211, limiting edge; 22, gas inlet; 23, gas outlet; 24, mounting seat; 241, pressure relief port; 242, sealing element; 25, pressure relief assembly; 251, buffering bin; 252, floating sealing ring; 253, reset spring; 254, gas guiding channel; 255, leading hole; 26, transmission pipeline;

[0037] 3, one-way conducting assembly; 31, hinged piece; 32, flexible patch;

[0038] 4, recharging assembly; 41, piston; 42, control rod; 421, lower exhaust hole; 422, upper exhaust hole; 43, pressure spring; 44, valve piece; 441, control hole; 45, inner rod; 451, pointer; 46, sealing sleeve. DETAILED DESCRIPTION

[0039] In order to further understand the features, technical means and achieved specific purposes and functions of the present application, the present application is described in further detail below in combination with the drawings and specific embodiments.

[0040] Reference is made to Figures 1 to 10The application discloses a safe aerosol can for storing fuel, which comprises a can body 1, the inside of the can body 1 is filled with an effective component and a propellant gas, a pressure buffer device 2 is installed at the top of the inside space of the can body 1, the pressure buffer device 2 is provided with a gas temporary storage bin 21, the bottom of the pressure buffer device 2 is provided with an air inlet 22 which is communicated with the gas temporary storage bin 21, characterized in that the gas temporary storage bin 21 is further provided with an air outlet 23 which is located at the bottom of the pressure buffer device 2; the pressure buffer device 2 further comprises a one-way conducting assembly 3 which is used for controlling the one-way conduction of the air inlet 22 and the air outlet 23; the pressure buffer device 2 further comprises a back-filling assembly 4 which is used for filling the propellant gas which enters into the gas temporary storage bin 21 through the air inlet 22 into the can body 1 through the air outlet 23.

[0041] The pressure buffer device 2 further comprises a mounting seat 24, a pressure relief assembly 25 embeddedly mounted in the mounting seat 24, and the pressure relief assembly 25 is arranged in communication with the gas inlet 22 of the gas temporary storage bin 21 through a transmission pipeline 26; the one-way communication assembly 3 for controlling the one-way communication of the gas inlet 22 and the gas outlet 23 is preferably a one-way valve; the pressure relief assembly 25 comprises a buffer bin 251, a gas guide nozzle, a floating sealing ring 252, a reset spring 253, a gas guide channel 254, and an import hole 255, wherein the buffer bin 251 is a hollow shell with an open bottom, the buffer bin 251 is arranged with the opening facing the inside of the tank, the gas guide nozzle is coaxially arranged in the buffer bin 251 and is in communication with the inside of the tank, and the floating sealing ring 252 is coaxially and slidably arranged outside the gas guide nozzle; the sidewall of the floating sealing ring 252 is further provided with a sealing ring, and the sealing ring is in abutment with the inner wall of the buffer bin 251; the reset spring 253 is coaxially arranged in the buffer bin 251, one end of the reset spring 253 is in abutment with the inside of the buffer bin 251, and the other end is in abutment with the upper surface of the floating sealing ring 252; so as to realize the elastic reset of the floating sealing ring 252; the sidewall of the gas guide nozzle is further provided with the import hole 255 which is higher than the lower surface of the floating sealing ring 252, the gas inlet 22 is arranged in communication with the gas guide channel 254 which is axially and throughly arranged from the gas inlet 22 to the top of the gas guide nozzle; the mounting seat 24 is a hollow shell which is in shape fit with the top of the tank, and the inside of the mounting seat 24 forms a cavity for mounting the pressure buffer device 2; the bottom of the mounting seat 24 is further provided with a pressure relief port 241 and a sealing element 242 embeddedly mounted at the pressure relief port 241; the area of the pressure relief port 241 is as large as possible without affecting the pressure buffer device 2, and the sealing element 242 embeddedly mounted at the pressure relief port 241 is preferably a sealing plug, and can also be other elastic films; the pressure that can be borne by the sealing plug or the elastic film is far greater than the trigger pressure of the pressure relief assembly 25 and the pressure of the propellant gas in the pipeline; only in the case of instantaneous high pressure, that is, when the tank body 1 is subjected to strong extrusion, the instantaneous high pressure generated in the state of rapid volume contraction in the tank body 1 can make the sealing plug separate from the pressure relief port 241 or make the elastic film break; at this time, the propellant gas can quickly flow into the mounting seat 24 through the pressure relief port 241, and the rapid pressure relief work of the instantaneous pressure is realized by changing the volume of the tank, and the technical problem of tank explosion caused by excessive internal pressure of the tank body 1 is completely avoided; at this time, the tank body 1 can be directly treated as scrap due to the large deformation caused by extrusion, without using;

[0042] In the working state, when the pressure in the tank increases due to external factors, there is a safety hazard, and the tank needs to be slowed down and released. When the gradually increasing pressure in the tank reaches the critical value, the floating sealing ring 252 will move upwards and expose the air inlet 22. Because the floating sealing ring 252 is pressed by the return spring 253, the boost gas in the tank cannot lift the floating sealing ring 252 under normal pressure. At this time, the boost gas entering the air inlet 22 will pass through the transmission pipeline 26 to pour the released gas into the gas temporary storage bin 21, thereby achieving the purpose of releasing the pressure in the tank. When the tank body 1 is transported to the destination or away from the source of the internal pressure increase of the tank body 1, the staff can operate the backfill assembly 4 to re-direct the released gas, i.e. boost gas, back into the tank body 1, so that the internal pressure returns to the initial state for the user to use. Under the action of the backfill assembly 4, the technical problem of the effective components being unable to be completely pushed out by the boost gas due to insufficient pressure in the tank body 1 does not occur.

[0043] Referring to Figure 9 As shown: the backfill assembly 4 includes a piston 41 arranged in the gas temporary storage bin 21, which can move in the vertical direction. The top of the piston 41 is provided with a control rod 42 which extends upwardly outside the tank body 1. The piston 41 divides the internal space of the gas temporary storage bin 21 into an upper chamber and a lower chamber. The upper chamber is provided with a pressure spring 43 which is sleeved on the control rod 42. The control rod 42 is a hollow rod. The lower end side wall of the control rod 42 is provided with a lower exhaust hole 421. The top of the control rod 42 is provided with an upper exhaust hole 422. The air inlet 22 and the air outlet 23 are both in communication with the lower chamber. The one-way valve is used as the one-way communication assembly 3 which controls the one-way communication of the air inlet 22 and the air outlet 23.

[0044] When the aerosol can is shipped out of the factory, the piston 41 is moved to the lowest position in the gas temporary storage bin 21 under the action of the pressure spring 43. During transportation, the gas pressure in the can body 1 increases due to shaking of the can body 1. When the gas pressure increases, the one-way conducting assembly 3 of the gas inlet 22 is opened, the boost gas enters the lower chamber and overcomes the compression force of the compression spring to make the piston 41 lift. When the aerosol can is transported to the destination and is stationary for a period of time, the piston 41 is compressed by the external pressure driving control rod 42 moving downward, thereby opening the one-way conducting assembly 3 of the gas outlet 23, so that the boost gas in the lower chamber returns to the can body 1. The gas temporary storage bin 21 is preferably a hollow cylindrical shell, and can also be other shapes. The larger the volume of the gas temporary storage bin 21, the more pressure relief gas it can store, and the better the protection effect. The one-way conducting assembly 3 arranged at the gas inlet 22 is a conventional one-way valve arranged outside the transmission channel, while the one-way valve at the gas outlet 23 is composed of a hinged part 31, a flexible patch 32 hingedly arranged on one side of the hinged part 31, and a torsional spring arranged at the hinge of the hinged part 31 and the flexible patch 32. The flexible patch 32 is always arranged in close contact with the gas outlet 23 under the action of the torsional spring, thereby achieving the purpose of one-way plugging of the gas outlet 23. Since the can body 1 already has a relatively large pressure, the flexible patch 32 can be tightly attached to the gas outlet 23 without the action of the torsional spring. Since the gas temporary storage bin 21 is an attached pressure relief bin, its internal pressure is much lower than that of the can body 1. When the aerosol can is transported to the destination and is stationary for a period of time, the piston 41 is compressed by the external pressure driving control rod 42 moving downward, thereby opening the one-way conducting assembly 3 of the gas outlet 23, so that the boost gas in the lower chamber returns to the can body 1. When the internal pressure of the gas temporary storage bin 21 is greater than the pressure in the can body 1 due to external intervention, the one-way conducting assembly 3 at the gas outlet 23 can be opened, thereby achieving the function of re-introducing the boost gas temporarily stored in the gas temporary storage bin 21 into the can body 1.

[0045] Referring to Figure 4 , Figure 6 , Figure 7 and Figure 9As shown: the backfill assembly 4 includes a piston 41 arranged in the gas temporary storage bin 21 and capable of moving in the vertical direction, the top of the piston 41 is provided with a control rod 42 which extends upwardly outside the tank body 1, the piston 41 divides the internal space of the gas temporary storage bin 21 into an upper chamber and a lower chamber, a pressure spring 43 is arranged in the upper chamber and sleeved on the control rod 42; the control rod 42 is a hollow rod, the lower end side wall of the control rod 42 is provided with a lower exhaust hole 421, and the top of the control rod 42 is provided with an upper exhaust hole 422; the backfill assembly 4 further includes a valve piece 44 arranged at the bottom of the internal space of the gas temporary storage bin 21 and capable of rotating around the axis of the control rod 42, an inner rod 45 is arranged in the control rod 42 and fixedly connected with the valve piece 44 through the piston 41, the top of the inner rod 45 protrudes from the top of the control rod 42, and the valve piece 44 is provided with a control hole 441.

[0046] When the aerosol can is loaded into the vehicle after leaving the factory, the piston 41 moves to the lowest position in the gas temporary storage bin 21 under the action of the pressure spring 43, the control hole 441 is communicated with the gas inlet 22 by rotating the inner rod 45, and the gas pressure in the tank body 1 is increased due to shaking of the tank body 1 or external factors during transportation, so that the piston 41 is lifted when the boost gas enters the lower chamber and overcomes the compression force of the compression spring; after the aerosol can is transported to the destination and is stationary for a period of time, the control hole 441 is communicated with the gas outlet 23 by rotating the inner rod 45, and then the piston 41 is compressed by driving the control rod 42 downwardly through external pressure, so that the boost gas in the lower chamber returns to the tank body 1 through the gas outlet 23; the edge of the valve piece 44 is further nested with a sealing ring, so as to ensure the sealing effect and avoid the problem that the control hole 441 deviates due to self-rotation of the valve piece 44 by utilizing the damping generated when the sealing ring abuts against the inner wall of the gas temporary storage bin 21.

[0047] Referring to Figure 6 As shown: the gas inlet 22 is arranged at the bottom of the lower chamber.

[0048] By arranging the gas inlet 22 at the bottom of the lower chamber, the internal space of the gas temporary storage bin 21 can be utilized to the maximum extent; the boost gas discharged through the pressure relief assembly 25 under the high-pressure state enters the lower chamber of the gas temporary storage bin 21 along the gas inlet 22 under the guidance of the transmission pipeline 26, and the gas inlet 22 is circularly arranged and smaller than the inner diameter of the pipeline of the transmission pipeline 26;

[0049] Referring to Figures 4-6 As shown: the bottom edge of the lower chamber is provided with a limiting edge 211, and the edge of the valve piece 44 is embedded below the limiting edge 211.

[0050] The limiting edge 211 is used to limit the end of the valve plate 44 to abut the bottom of the inner wall of the gas temporary storage bin 21, so as to avoid the valve plate 44 from rising due to artificial factors or external air pressure when the inner rod 45 drives the valve plate 44 to rotate, so that the gas inlet 22 and the gas outlet 23 are exposed in series at the same time, so that the boost gas after pressure relief cannot normally flow into the lower cavity, thereby affecting the normal back-pushing during the subsequent back-pushing of the boost gas and causing a part of the gas to flow back from the gas inlet 22 into the pressure relief assembly 25.

[0051] Referring to Figure 6 It is shown that the inner rod 45 is sealed and connected between the outer wall of the inner rod 45 and the piston 41 through the sealing sleeve 46.

[0052] The sealing sleeve 46 is used to seal and connect between the outer wall of the inner rod 45 and the piston 41, so as to avoid the boost gas in the lower cavity from leaking to the outside of the tank through the gap between the outer wall of the inner rod 45 and the piston 41, thereby preventing the boost gas from leaking outside.

[0053] Referring to Figure 9 It is shown that the tank body 1 is provided with a first circular table 11, and the top of the control rod 42 is exposed above the first circular table 11 by penetrating the first circular table 11; the back-charging assembly 4 further includes a gland 111 which is screwed on the first circular table 11, and when the gland 111 is screwed on the first circular table 11, the top of the control rod 42 is located inside the gland 111.

[0054] In the pressure relief state, when the lower cavity is filled with boost gas, the boost gas enters the lower cavity and overcomes the compression force of the compression spring to make the piston 41 lift and extend to the outside of the tank body 1, and the control rod 42 lifts synchronously, when the aerosol tank is transported to the destination and is stationary for a period of time, and the gas pressure in the pipe returns to a stable state and needs to be re-sent to the pipe, the control rod 42 is only needed to be driven to move axially downward by screwing the gland 111, so as to achieve the purpose of re-sending the boost gas after pressure relief into the tank; the gland 111 is screwed to the top of the first circular table 11 in the initial state, thereby forming an active gap inside for the control rod 42 to float axially.

[0055] Referring to Figure 6 and Figure 7 It is shown that the tank body 1 is provided with a first circular table 11, and the top of the control rod 42 is exposed above the first circular table 11 by penetrating the first circular table 11; the back-charging assembly 4 further includes a gland 111 which is screwed on the first circular table 11, and when the gland 111 is screwed on the first circular table 11, the top of the control rod 42 is located inside the gland 111; the gland 111 is provided with a perforation 112 for the inner rod 45 to penetrate.

[0056] The gland 111 is screwed to the top of the first circular platform 11 in the initial state, thereby forming an active gap inside for the control rod 42 to axially float freely; and the perforation on the top of the gland 111 is used for the inner rod 45 to pass through, thereby facilitating the staff to adjust the valve disc 44 by operating the inner rod 45, and the axial height of the inner rod 45 is greater than the maximum height that the control rod 42 can float.

[0057] Referring to Figures 6-7 As shown, the tank body 1 is provided with a second circular platform 12, the top of the inner rod 45 is provided with a pointer 451, the second circular platform 12 is provided with a first mark 121 and a second mark 122, and when the pointer 451 is aligned with the position of the first mark 121 by rotating the inner rod 45, the control hole 441 is communicated with the air inlet 22; and when the pointer 451 is aligned with the position of the second mark 122 by rotating the inner rod 45, the control hole 441 is communicated with the air outlet 23.

[0058] The diameter of the control hole 441 is much greater than the conducting diameter of the air inlet 22 and the air outlet 23, so that when the valve disc 44 is operated to rotate and connect with the air inlet 22 or the air outlet 23, even if there is a slight deviation, the control hole 441 can also be normally connected with the air outlet hole or the air inlet hole; the control hole 441 is provided with at least one and preferably a waist-shaped hole, and through the above-mentioned arrangement, the operation difficulty of the control hole 441 and the air outlet hole or the air inlet hole can be greatly reduced.

[0059] The present application can not only release pressure in the high-pressure state of the aerosol tank, but also can send the released boost gas back into the aerosol tank in the stable state, and has instantaneous pressure protection and can release pressure of the aerosol tank instantaneously.

[0060] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A highly safe aerosol can for storing fuel, characterized in that, The can body (1) is filled with active ingredients and boost gas, a pressure buffer device (2) is installed at the top of the internal space of the can body (1), the pressure buffer device (2) is provided with a gas temporary storage bin (21), the bottom of the pressure buffer device (2) is provided with an air inlet (22) communicated with the gas temporary storage bin (21), characterized in that the gas temporary storage bin (21) is further provided with an air outlet (23) at the bottom of the pressure buffer device (2); The pressure buffer device (2) further comprises a one-way valve assembly (3) for controlling the one-way conduction of the air inlet (22) and the air outlet (23); The pressure buffer device (2) further comprises a recharge assembly (4) for charging the boost gas entering the gas temporary storage bin (21) through the air inlet (22) into the can body (1) through the air outlet (23); The recharge assembly (4) comprises a piston (41) capable of moving vertically arranged in the gas temporary storage bin (21), the top of the piston (41) is provided with a control rod (42) extending upwardly out of the can body (1), the piston (41) divides the internal space of the gas temporary storage bin (21) into an upper chamber and a lower chamber, the upper chamber is provided with a pressure spring (43) sleeved on the control rod (42); The control rod (42) is a hollow rod, the lower end side wall of the control rod (42) is provided with a lower exhaust hole (421), and the top of the control rod (42) is provided with an upper exhaust hole (422); The air inlet (22) and the air outlet are both communicated with the lower chamber; the one-way valve assembly (3) for controlling the one-way conduction of the air inlet (22) and the air outlet (23) is a one-way valve.

2. The aerosol can of claim 1, wherein The recharge assembly (4) further comprises a valve plate (44) capable of rotating around the axis of the control rod (42) arranged at the bottom of the internal space of the gas temporary storage bin (21), the control rod (42) is provided with an inner rod (45) fixedly connected with the valve plate (44) penetrating the piston (41), the top of the inner rod (45) protrudes from the top of the control rod (42), and the valve plate (44) is provided with a control hole (441).

3. The aerosol container according to any one of claims 1 or 2, wherein The air inlet (22) is arranged at the bottom of the lower chamber.

4. The aerosol container according to claim 2, wherein The bottom edge of the lower chamber is provided with a limiting edge (211), the edge of the valve plate (44) is embedded below the limiting edge (211), and the edge of the valve plate (44) is further nested with a sealing ring.

5. The aerosol container according to claim 2, wherein The outer wall of the inner rod (45) is sealingly connected with the piston (41) through a sealing shaft sleeve (46).

6. The aerosol container according to any one of claims 1 or 2, wherein The can body (1) is provided with a first circular table (11), the top of the control rod (42) is exposed above the first circular table (11) through the first circular table (11); The recharge assembly (4) further comprises a gland (111) screwed on the first circular table (11), when the gland (111) is screwed with the first circular table (11), the top of the control rod (42) is arranged in the gland (111).

7. The aerosol can of claim 6, wherein The pressure cover (111) is screwed to the top of the first circular platform (11) in the initial state, thereby forming an active gap inside for the control rod (42) to float axially by itself; the pressure cover (111) is provided with a perforation (112) for the inner rod (45) to pass through, and the inner rod (45) is operated to adjust and convert the valve piece (44), and the axial height of the inner rod (45) is greater than the maximum height that the control rod (42) can float.

8. The aerosol container according to claim 7, wherein The inner rod (45) is provided with a pointer (451) at the top, and the second circular platform (12) is provided with a first mark (121) and a second mark (122), When the inner rod (45) is rotated to align the pointer (451) with the position of the first mark (121), the control hole (441) is in communication with the air inlet (22); When the inner rod (45) is rotated to align the pointer (451) with the position of the second mark (122), the control hole (441) is in communication with the air outlet (23).

9. The method of using a safe aerosol container for storing fuel according to claim 8, wherein: The pressure relief step includes: when the aerosol can is loaded into the vehicle after leaving the factory, the piston (41) moves to the lowest position in the gas temporary storage chamber (21) under the action of the pressure spring (43), the control hole (441) is communicated with the air inlet (22) by rotating the inner rod (45); The pressure relief gas backfilling step: when the pressure in the can body (1) increases during transportation, the boost gas enters the lower chamber and overcomes the compression force of the compression spring to lift the piston (41), the control hole (441) is communicated with the air outlet (23) by rotating the inner rod (45), and then the control rod (42) is driven downward by external pressure to compress the lower chamber, so that the boost gas in the lower chamber returns to the can body (1) through the air outlet (23).

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