Reusable gas storage cylinder structure and firework cylinder with gas storage cylinder structure

Abstract

The utility model discloses a reusable gas storage bottle structure which comprises a gas storage bottle, one end of the gas storage bottle is a jet orifice for jetting compressed air, the other end of the gas storage bottle is a gas storage bottle opening connected with a gas storage bottle cap, the gas storage bottle cap is provided with a gas outlet and a gas inlet, and the gas storage bottle cap is provided with a gas outlet and a gas outlet. The air outlet is connected with an exhaust valve used for releasing air through an air pipe, and the air inlet is connected with a pneumatic check valve used for being communicated with an air source to inflate air into the air storage bottle through an air pipe. The firework box is simple in structure, filler in the firework box can be sprayed outwards through the firework box, a saluting gun does not need to be used in a matched mode, taking and using are more convenient, cost is lower, the gas storage bottle is simple in structure, the gas storage bottle does not need to be returned to a manufacturer to be completely disassembled and recombined to be used again, and use is convenient. A consumer only needs to inflate air into the air storage bottle by himself.

Description

Technical Field

[0001] The utility model belongs to the field of fireworks, and in particular relates to a reusable gas storage bottle structure and a fireworks tube with the gas storage bottle structure. Background Art

[0002] Firework tubes use compressed air as a power source to rush the fillings in the firework box into the sky, forming colorful highlights to add to the atmosphere of the festive day. Figure 1 As shown, it includes a fireworks tube body 5, a gas cylinder 8 is provided below the inner cavity of the fireworks tube body 5, and a fireworks box 6 is provided above the inner cavity of the gas cylinder 8. The gas cylinder 8 serves as a power source of compressed air to push the filling 62 in the fireworks box 6 into the sky. The specific structure of the gas cylinder 8 is shown in FIG. Figure 2 and Figure 3 As shown, it includes a gas cylinder body 81 and a protective cover 82, the gas cylinder body 81 is filled with compressed air, the top of the gas cylinder body 81 is provided with an air jet 811 and a fixing frame 812, the air jet 811 is plugged with an air plug 813, and the top side of the fixing frame 812 is rotatably connected to a pressure cover 815 for pressing the air plug 813 through a rotating shaft 814, and the side of the pressure cover 815 facing away from the rotating shaft 814 is connected to the fixing frame 812 through a strap 816, and the strap 816 is provided with a resistance wire 817 that can burn the strap 816, and the resistance wire 817 is connected to the wire plug 819 through a wire 818, and the wire 818 and the wire plug 819 pass through the protective cover 82 on the top of the gas cylinder body 81 and the fireworks tube body 5 and are exposed to the outside.

[0003] When in use, the existing display tube needs to be inserted into the salute gun and the wire plug 819 is connected to the salute gun. The salute gun is powered by triggering the switch of the salute gun. Then, the current flows through the wire plug 819 and the wire 818 of the display tube through the resistor 817 to burn the binding 816. Since the gland 815 is no longer restrained by the binding 816 and the air pressure outside the gas cylinder 8 is lower than the pressure inside the gas cylinder 8, the compressed air in the gas cylinder 8 can push the air plug 813 toward the display box 6. Under the action of the compressed air, the filling 62 in the display box 6 is ejected from the display tube. However, the existing display tube has the following problems:

[0004] 1. Fireworks tubes need to be equipped with a salute gun, so they are large in size and inconvenient to use and take.

[0005] 2. Existing fireworks tubes are difficult to recycle and reuse. Ordinary consumers cannot solve the problem of re-binding the resistance wire. Recycling requires returning them to the manufacturer, who will disassemble and reassemble them before they can be used again. The recycling cost is too high, and many manufacturers are unwilling to recycle them, resulting in a waste of resources. Utility Model Content

[0006] The utility model discloses a reusable gas storage bottle structure and a firework tube with the same, which can realize the outward spraying of the filler in the firework box by itself, and does not need to be used in cooperation with a salute gun, so that the taking and using are more convenient, and the cost is lower.

[0007] In order to achieve the above object, the utility model provides a reusable gas storage bottle structure, including gas storage bottle, one end of gas storage bottle is the spout of compressed air, the other end of gas storage bottle is the gas storage bottle mouth connected with gas storage bottle cover, be equipped with gas outlet, gas inlet and pressure port on gas storage bottle cover, the gas outlet is connected with the exhaust valve for releasing gas through the gas pipe, the gas inlet is connected with the pneumatic check valve for connecting the gas source to fill the gas storage bottle through the gas pipe, the pressure port is connected with the pressure gauge for detecting the pressure in the gas storage bottle through the gas pipe.

[0008] As further optimization, the gas storage bottle is internally provided with a gas storage chamber, the gas storage chamber is internally provided with an exhaust chamber, one end of the exhaust chamber away from the gas storage bottle cover is connected with the spout, the inner cavity of the gas storage bottle cover is internally provided with a side wall extending to the gas storage chamber, the side wall divides the inner cavity of the gas storage bottle cover into a pneumatic chamber and a pressure chamber, the gas outlet and the gas inlet are arranged in the pneumatic chamber, the pressure port is arranged in the pressure chamber, the pneumatic chamber is internally provided with a piston, the diameter of the piston is greater than the diameter of the exhaust chamber, after the gas storage bottle cover is connected with the gas storage bottle, the piston is kept a distance from the end of the exhaust chamber, so that the piston moves along the axial direction in the pneumatic chamber to the end of the exhaust chamber.

[0009] As further optimization, one end of the exhaust chamber away from the spout is fixed in the gas storage chamber through a support, and a first sealing ring is sleeved on the end of the exhaust chamber.

[0010] A reusable gas storage bottle structure, including gas storage bottle, one end of gas storage bottle is the spout of compressed air, the other end of gas storage bottle is the gas storage bottle mouth connected with gas storage bottle cover, be equipped with gas outlet and gas inlet on gas storage bottle cover, the gas outlet is connected with the exhaust valve for releasing gas through the gas pipe, the gas inlet is connected with the pneumatic check valve for connecting the gas source to fill the gas storage bottle through the gas pipe.

[0011] As a further optimization, the inside of the gas cylinder is provided with a gas storage chamber, the gas storage chamber is provided with an exhaust chamber, the exhaust chamber is connected with the injection port at an end away from the gas cylinder cover, the gas cylinder cover is provided with a side wall extending to the gas storage chamber in the inner cavity, the side wall divides the inner cavity of the gas cylinder cover into a pneumatic chamber and a pressure chamber, the gas outlet and the gas inlet are arranged in the pneumatic chamber, and the pneumatic chamber is provided with a piston; after the gas cylinder cover is connected with the gas cylinder, the piston is kept a distance from the end of the exhaust chamber, so that the piston reciprocates in the axial direction between the pneumatic chamber and the end of the exhaust chamber.

[0012] As a further optimization, the end of the exhaust chamber away from the injection port is fixed in the gas storage chamber through a support.

[0013] As a further optimization, the end of the exhaust chamber away from the injection port is provided with a first sealing ring.

[0014] As a further optimization, the piston is provided with an exhaust groove on the outer wall of the side close to the pneumatic chamber, or the piston is a circular truncated cone type, and the diameter of the end close to the pneumatic chamber is smaller than the diameter of the end close to the exhaust chamber.

[0015] As a further optimization, the side of the piston opposite to the pneumatic chamber is provided with a weight-reducing cavity recessed towards the exhaust chamber.

[0016] As a further optimization, the inner wall of the pressure chamber is provided with a second sealing ring at a position opposite to the opening of the gas cylinder.

[0017] As a further optimization, the connecting end of the gas cylinder and the injection port is a cone-shaped inwardly inclined taper.

[0018] As a further optimization, the pneumatic check valve is connected with an inflation nozzle.

[0019] A firework tube with a reusable gas cylinder structure, comprising a firework tube body, a reusable gas cylinder structure as described above is arranged below the inner cavity of the firework tube body, and a firework box is arranged above the inner cavity of the firework tube body.

[0020] The advantages and beneficial effects of the present application

[0021] 1、the present application fills the gas cylinder with air through the pneumatic check valve or the inflation nozzle, drives the piston in the pneumatic chamber to close the exhaust chamber, so that the gas storage chamber is filled with gas, when the firework tube is needed, the gas in the pneumatic chamber is discharged by opening the exhaust valve, at this time, the pressure in the gas storage chamber is greater than that in the pneumatic chamber, the compressed air drives the piston to move towards the pneumatic chamber, the exhaust chamber is opened, and the compressed air sprays the filler in the firework box through the injection port, so that the firework tube does not need to be used with the saluting gun, the binding belt is melted by using the resistance wire, the structure is simpler, and the structure is simple, so that the taking and using are more convenient.

[0022] 2, the utility model discloses after using only need to fill gas and install the firework box to gas cylinder, install simple, do not need to return to factory recycling and can be used again after being all disassembled and reassembling, save the cost, avoid the resource waste.

[0023] 3, the utility model discloses simple assembly between the firework box and the firework barrel, can place the quantity and the style of filler according to one's own preference and use the sealing plate, that is, the top of the firework barrel is sealed with paper, in order to prevent the paper of top from being damaged, the protective cover can be sleeved on the top of sealing plate. DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be simply introduced below, and obviously, the drawings in the following description are only the embodiment of the utility model, and other drawings can be obtained according to the drawings provided without the creative labor for the ordinary skilled in the art.

[0025] Figure 1 It is the sectional view of the structure of the existing firework barrel;

[0026] Figure 2 It is the sectional view of the structure of the existing firework barrel;

[0027] Figure 3 It is the sectional view of the structure of the existing firework barrel;

[0028] Figure 4 It is the sectional view of the structure of the existing firework barrel;

[0029] Figure 5 It is the sectional view of the structure of the existing firework barrel;

[0030] Figure 6 It is the sectional view of the structure of the existing firework barrel;

[0031] Figure 7 It is the sectional view of the structure of the existing firework barrel;

[0032] Figure 8 It is the sectional view of the structure of the existing firework barrel;

[0033] Figure 9 It is the sectional view of the structure of the existing firework barrel;

[0034] Figure 10 It is the sectional view of the structure of the existing firework barrel;

[0035] Figure 11 is the overall structure sectional view of the fireworks tube in the embodiment 1 of the utility model.

[0036] Figure 12 is the overall structure schematic diagram of the gas storage bottle structure in the embodiment 2 of the utility model;

[0037] Figure 13 is the split diagram of the gas storage bottle structure in the embodiment 2 of the utility model;

[0038] Figure 14 is the internal structure diagram of the gas storage bottle in the embodiment 2 of the utility model;

[0039] Figure 15 is the internal structure diagram of the gas storage bottle cap in the embodiment 2 of the utility model;

[0040] Figure 16 is the sectional view when the gas storage bottle and the gas storage bottle cap are connected and inflated in the embodiment 2 of the utility model;

[0041] Figure 17 is the sectional view when the gas storage bottle and the gas storage bottle cap are connected and deflated in the embodiment 2 of the utility model;

[0042] Figure 18 is the overall structure sectional view of the fireworks tube in the embodiment 2 of the utility model.

[0043] Reference signs: gas storage bottle 1, injection port 11, gas storage bottle cap 12, gas outlet 121, air inlet 122, pressure port 123, side wall 124, pneumatic chamber 125, pressure chamber 126, piston 127, exhaust groove 1271, first sealing ring 128, second sealing ring 129, gas storage bottle port 13, gas storage chamber 14, exhaust chamber 15, clamping groove 151, support 16, exhaust valve 2, pneumatic check valve 3, pressure gauge 4, fireworks tube body 5, fireworks box 6, bottom plate 61, filler 62, cover 63, plugging 7, gas cylinder 8, gas cylinder body 81, air injection port 811, fixing frame 812, gas plug 813, rotating shaft 814, gland 815, bandage 816, resistance wire 817, wire 818, wire plug 819, protective cover 82 and inflation nozzle 9. DETAILED DESCRIPTION

[0044] The terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0045] The specific implementation of the present application is described in detail below with reference to the drawings. It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] Example 1

[0047] As shown in Figure 4 and Figure 5 , a reusable gas cylinder structure includes a gas cylinder 1, the upper part of the gas cylinder 1 is a conical shape that is inclined inward, the top end of the conical bottle body is provided with a spray port 11, the upper part of the gas cylinder 1 is a conical bottle body that can facilitate the installation of the gas cylinder structure in the shell body 5, the bottom end of the gas cylinder 1 is a gas cylinder port 13, the outer wall of the gas cylinder port 13 is provided with external threads, the gas cylinder 1 is connected to the gas cylinder cover 12 through threads, as shown in Figure 6 , Figure 7 and Figure 8 , the inside of the gas cylinder 1 is provided with a gas storage chamber 14, the gas storage chamber 14 is used to store the compressed air filled in, the middle part of the gas storage chamber 14 is provided with an exhaust chamber 15, the top end of the exhaust chamber 15 is connected to the spray port 11, when the exhaust valve 2 is pressed, the compressed air in the gas storage chamber 14 is sprayed outward from the spray port 11 through the exhaust chamber 15, the outer wall of the bottom end of the exhaust chamber 15 is provided with a clamping groove 151, a bracket 16 is sleeved on the clamping groove 151, the bracket 16 can further fix the exhaust chamber 15 in the middle part of the gas storage chamber 14, preventing cracks or fractures from occurring at the connection between the exhaust chamber 15 and the spray port 11 due to long-term use of the gas cylinder 1, the bottom part of the bracket 16 is provided with a first sealing ring 128 made of rubber, the first sealing ring 128 is sleeved on the bottom end of the exhaust chamber 15 and abuts against the bracket 16, so as to prevent the bracket 16 from moving along the axis, at the same time, since the first sealing ring 128 is made of rubber, it can cooperate with the piston 127 in the pneumatic chamber 125, so as to prevent compressed air from leaking outward from the exhaust chamber 15 and the spray port 11 when not in use.

[0048] As shown in Figure 9 and Figure 10 , the inner cavity of the gas cylinder cover 12 is provided with a side wall 124 extending towards the gas storage chamber 14, the side wall 124 divides the inner cavity of the gas cylinder cover 12 into a pneumatic chamber 125 and a pressure chamber 126, the pneumatic chamber 125 is provided with an air outlet 121 and an air inlet 122, the pressure chamber 126 is provided with a pressure port 123, as shown in Figure 4As shown, the air outlet 121 is connected to the exhaust valve 2 through the air pipe, and the exhaust valve 2 is used to discharge the compressed air in the pneumatic chamber 125. The air inlet 122 is connected to the pneumatic check valve 3 through the air pipe, and the pneumatic check valve 3 is used to connect the air source to inflate the air storage chamber 14. The pressure port 123 is connected to the pressure gauge 4 through the air pipe, and the pressure gauge 4 is used to detect the pressure in the air storage chamber 14. A piston 127 is provided in the pneumatic chamber 125, and the diameter of the piston 127 is larger than the diameter of the exhaust chamber 15. When the pressure in the air storage chamber 14 is greater than the pressure in the pneumatic chamber 125, the compressed air in the air storage chamber 14 will push the piston 127 to move into the pneumatic chamber 125 to open the exhaust chamber 15. Figure 7 As shown, after the gas cylinder cover 12 is connected to the gas cylinder 1, a distance is left between the piston 127 and the bottom end of the exhaust chamber 15 so that the piston 127 can reciprocate axially between the pneumatic chamber 125 and the bottom end of the exhaust chamber 15. The piston 127 has a weight-reducing cavity on one side relative to the pneumatic chamber 125 that is recessed toward the exhaust chamber 15, so that the piston 127 is more flexible when pushed.

[0049] As a further optimization, Figure 9 As shown, a second sealing ring 129 is provided on the inner wall of the pressure chamber 126 relative to the gas cylinder mouth 13. The second sealing ring 129 can further prevent the compressed air in the gas storage chamber 14 from leaking outward from between the gas cylinder mouth 13 and the gas cylinder cover 12.

[0050] like Figure 11 As shown, a fireworks tube with a reusable gas cylinder structure includes a fireworks tube body 5, and a reusable gas cylinder structure in Example 1 is provided below the inner cavity of the fireworks tube body 5. The exhaust valve 2 and the pneumatic check valve 3 on the reusable gas cylinder structure are provided at the bottom of the inner cavity of the fireworks tube body 5. The bottom end of the inner cavity of the fireworks tube body 5 is plugged with a plug 7, and the plug 7 is connected to the fireworks tube body 5 by a rope. The plug 7 can prevent people from accidentally touching the exhaust valve 2 and the pneumatic check valve 3. When inflating through the pneumatic check valve 3 or pressing the exhaust valve 2 to release the fireworks cannon, the plug 7 needs to be opened. At this time, in order to prevent The plug 7 is lost, so the plug 7 is connected to the fireworks tube body 5 with a rope. The pressure gauge 4 passes through the side wall of the fireworks tube body 5 and is exposed outside the fireworks tube body 5, which is convenient for observing the pressure in the air storage chamber 14 through the pressure gauge 4 during inflation. A fireworks box 6 is provided above the inner cavity of the fireworks tube body 5. The fireworks box 6 includes a bottom plate 61, a filler 62 and a cover 63. The bottom plate 61 is supported above the inner cavity of the fireworks tube body 5 by nails. The bottom plate 61 is provided with a filler 62. The top of the fireworks tube body 5 is closed with a cover (paper) 63. At the same time, a protective cover can also be provided on the top of the cover 63 to prevent people from accidentally breaking the cover 63.

[0051] Example 2

[0052] As Figure 12 and Figure 13 shown, a reusable gas cylinder structure, comprising a gas cylinder 1, the top end of the gas cylinder 1 is provided with a jet port 11, the bottom end of the gas cylinder 1 is a gas cylinder port 13, the outer wall of the gas cylinder port 13 is provided with external threads, the gas cylinder 1 is connected with the gas cylinder cover 12 through threads, as Figure 14 , Figure 16 and Figure 17 shown, the inside of the gas cylinder 1 is provided with a gas storage chamber 14, the gas storage chamber 14 is used to store the compressed air filled in, the middle part of the gas storage chamber 14 is provided with an exhaust chamber 15, the top end of the exhaust chamber 15 is connected with the jet port 11, when the exhaust valve 2 is pressed, the compressed air in the gas storage chamber 14 is sprayed out from the jet port 11 through the exhaust chamber 15, the outer wall of the lower end of the exhaust chamber 15 is provided with a clamping groove 151, the clamping groove 151 is sleeved with a bracket 16, the bracket 16 can further fix the exhaust chamber 15 in the middle part of the gas storage chamber 14, prevent the connection between the exhaust chamber 15 and the jet port 11 from being cracked or broken due to long time use of the gas cylinder 1, the bottom of the bracket 16 is provided with a first sealing ring 128 made of rubber, the first sealing ring 128 is sleeved on the bottom end of the exhaust chamber 15 and abuts against the bracket 16, to prevent the bracket 16 from moving along the axis, at the same time, since the first sealing ring 128 is made of rubber, it can cooperate with the piston 127 in the pneumatic chamber 125 to prevent the compressed air from leaking out from the exhaust chamber 15 and the jet port 11 when not in use.

[0053] As Figure 15 shown, the inner cavity of the gas cylinder cover 12 is provided with a side wall 124 extending to the gas storage chamber 14, the side wall 124 divides the inner cavity of the gas cylinder cover 12 into a pneumatic chamber 125 and a pressure chamber 126, the pneumatic chamber 125 is provided with an air outlet 121 and an air inlet 122, as Figure 16 shown, the air outlet 121 is connected with the exhaust valve 2 through an air pipe, the exhaust valve 2 is used to discharge the compressed air in the pneumatic chamber 125, the air inlet 122 is connected with the pneumatic check valve 3 through an air pipe, the pneumatic check valve 3 is used to connect the air source to fill air into the gas storage chamber 14, since there is a problem of inconvenient connection when the pneumatic check valve 3 is connected with the air pump, the embodiment 2 is connected with the air filling nozzle 9 on the pneumatic check valve 3, through the pneumatic check valve 3, it can be ensured that the compressed air will not leak out from the pneumatic check valve 3 after the gas cylinder structure is filled with air, through the air filling nozzle 9, the connection between the gas cylinder structure and the air pump can be more convenient, the pneumatic chamber 125 is provided with a piston 127, the diameter of the piston 127 is not less than the diameter of the air outlet at the bottom end of the exhaust chamber 15 or the diameter of the air exhaust hole on the first sealing ring 128, to prevent the piston 127 from entering the exhaust chamber 15 when moving along the axial direction, as Figure 17As shown, the piston 127 is kept a distance from the bottom end of the exhaust chamber 15 after the gas cylinder cap 12 is connected to the gas cylinder 1, so that the piston 127 reciprocates along the axial direction between the pneumatic chamber 125 and the bottom end of the exhaust chamber 15.

[0054] As a further optimization, as shown in Figure 13 and Figure 16 As shown, the outer wall of the bottom end of the piston 127 is provided with an exhaust groove 1271, or the piston 127 is in the shape of a circular truncated cone, i.e. the diameter of the bottom end of the piston 127 is smaller than that of the top end, as shown in Figure 17 As shown, when exhaust is performed through the exhaust valve 2, the pressure in the pneumatic chamber 125 is lower than that in the gas storage chamber 14, and the compressed air in the gas storage chamber 14 pushes the piston 127 to move into the pneumatic chamber 125, so that the exhaust chamber 15 is opened. Since the top of the piston 127 is tightly fitted with the side wall of the pneumatic chamber 125, the compressed air in the gas storage chamber 14 cannot flow out from the gap between the piston 127 and the side wall 124, thus causing the exhaust delay phenomenon, as shown in Figure 16 As shown, when the gas cylinder structure is filled with air, the compressed air enters the pneumatic chamber 125 through the air inlet 122, and the compressed air in the pneumatic chamber 125 pushes the piston 127 to abut against the bottom end of the exhaust chamber 15. At this time, the piston 127 cooperates with the first sealing ring 128 to seal the exhaust port at the bottom end of the exhaust chamber 15, so as to prevent the compressed air from leaking out from the exhaust chamber 15 and the injection port 11. Since the outer wall of the bottom end of the piston 127 is provided with an inwardly recessed exhaust groove 1271, or the diameter of the bottom end of the piston 127 is smaller than that of the top end, the compressed air in the pneumatic chamber 125 flows into the gas storage chamber 14 from the gap between the exhaust groove 1271 and the side wall 124, or from the gap between the bottom end of the piston 127 and the side wall 124. The side of the piston 127 relative to the pneumatic chamber 125 is provided with a weight-reducing cavity recessed towards the exhaust chamber 15, so that the piston 127 is more flexible when pushed.

[0055] As a further optimization, as shown in Figure 15 The inner wall of the pressure chamber 126 is provided with a second sealing ring 129 relative to the position of the gas cylinder port 13. The second sealing ring 129 can further prevent the compressed air in the gas storage chamber 14 from leaking out from between the gas cylinder port 13 and the gas cylinder cap 12.

[0056] The pressure port 123 is provided in the pressure chamber 126 of the gas cylinder cap 12 in the first embodiment 1, and the pressure gauge 4 is connected to the pressure port 123 through an air pipe, so that the first embodiment 1 is applicable to the air pump without a pressure gauge or a pressure switch, and can also be used for the air pump with a pressure gauge or a pressure switch. The pressure chamber 126 of the second embodiment 2 is not provided with the pressure port 123 and the pressure gauge 4 connected to the pressure port 123, so that the second embodiment 2 is only applicable to the air pump with a pressure gauge or a pressure switch.

[0057] As Figure 18 shown, a kind of with reusable gas cylinder structure's firework tube, including firework tube body 5, the lower portion of the inner cavity of the firework tube body 5 is equipped with the reusable gas cylinder structure in embodiment 2, the air exhaust valve 2, pneumatic check valve 3 and inflation nozzle 9 on the reusable gas cylinder structure are located in the bottom of the inner cavity of the firework tube body 5, the bottom end of the inner cavity of the firework tube body 5 is plugged with the block 7, the block 7 is connected with the firework tube body 5 by rope, the block 7 can prevent personnel accidentally bump air exhaust valve 2, pneumatic check valve 3 and inflation nozzle 9, when being inflated by pneumatic check valve 3 or inflation nozzle 9 or needing to press air exhaust valve 2 to release firecracker, need to open the block 7, at this time, in order to prevent the block 7 loss, so the block 7 is connected on the firework tube body 5 with rope, the upper portion of the inner cavity of the firework tube body 5 is equipped with firework box 6, the firework box 6 includes bottom plate 61, filler 62 and cover 63, the bottom plate 61 is supported in the upper portion of the inner cavity of the firework tube body 5 by nail, the bottom plate 61 is equipped with filler 62, the top of the firework tube body 5 is closed with cover (paper) 63, simultaneously, protection cover can also be equipped on the top of cover 63, to prevent personnel accidentally break cover 63.

[0058] The working principle of the firework tube

[0059] As Figure 6 , Figure 11 , Figure 16 shown, when being inflated to the gas cylinder 1 by pneumatic check valve 3 or inflation nozzle 9, at this time, compressed air flows to the pneumatic chamber 125 from the air inlet 122, and pushes the piston 127 in the pneumatic chamber 125 to move in the direction of the exhaust chamber 15, when the piston 127 abuts against the bottom end of the exhaust chamber 15, the exhaust chamber 15 is closed by cooperating with the first sealing ring 128, at this time, compressed air flows from the pneumatic chamber 125 to the storage chamber 14, in the process of inflation, embodiment 1 needs to check the pressure gauge 4, and embodiment 2 needs to check the pressure gauge on the air pump, when the pressure gauge reaches the specified pressure, stop inflating to the gas cylinder 1.

[0060] As Figure 7 , Figure 11 , Figure 17 and Figure 18 shown, when wanting to use the firework tube, press down the air exhaust valve 2, at this time, compressed air in the pneumatic chamber 125 is discharged from the air exhaust valve 2, the pressure in the pneumatic chamber 125 is gradually less than the pressure in the storage chamber 14, and the compressed air in the storage chamber 14 pushes the piston 127 to move in the direction of the pneumatic chamber 125 along the axial direction, at this time, the exhaust chamber 15 is opened, the top end of the piston 127 is tightly combined with the side wall of the pneumatic chamber 125, and the compressed air in the storage chamber 14 is sprayed to the firework box 6 above the firework tube body 5 through the exhaust chamber 15 and the injection port 11, finally, the bottom plate 61 and the filler 62 or the filler 62 break the cover 63 and are sprayed outward.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the foregoing embodiments of the present application have been described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the embodiments of the present application.

Claims

1. A reusable gas cylinder structure, characterized by: The utility model relates to a compressed air cylinder, which comprises a cylinder (1), one end of the cylinder (1) being a jet port (11) for jetting compressed air, the other end of the cylinder (1) being a cylinder port (13) connected with a cylinder cover (12), the cylinder cover (12) being provided with an air outlet (121), an air inlet (122) and a pressure port (123), the air outlet (121) being connected with an exhaust valve (2) for releasing gas through an air pipe, the air inlet (122) being connected with a pneumatic check valve (3) for connecting a gas source to charge the cylinder (1) with gas through an air pipe, and the pressure port (123) being connected with a pressure gauge (4) for detecting the pressure in the cylinder (1) through an air pipe.

2. A reusable gas cylinder structure as claimed in claim 1, wherein: The cylinder (1) is internally provided with a gas storage chamber (14), the gas storage chamber (14) is provided with an exhaust chamber (15), one end of the exhaust chamber (15) away from the cylinder cover (12) is connected with the jet port (11), the inner cavity of the cylinder cover (12) is provided with a side wall (124) extending to the gas storage chamber (14), the side wall (124) divides the inner cavity of the cylinder cover (12) into a pneumatic chamber (125) and a pressure chamber (126), the air outlet (121) and the air inlet (122) are arranged in the pneumatic chamber (125), the pressure port (123) is arranged in the pressure chamber (126), the pneumatic chamber (125) is provided with a piston (127), the diameter of the piston (127) is greater than the diameter of the exhaust chamber (15), and after the cylinder cover (12) is connected with the cylinder (1), the piston (127) is kept a distance from the end of the exhaust chamber (15) so as to move axially in the pneumatic chamber (125) to the end of the exhaust chamber (15).

3. A reusable gas cylinder structure as claimed in claim 2, wherein: One end of the exhaust chamber (15) away from the jet port (11) is fixed in the gas storage chamber (14) through a support (16), and the end of the exhaust chamber (15) is sleeved with a first sealing ring (128).

4. A reusable gas cylinder structure, characterized by: The utility model relates to a compressed air cylinder, which comprises a cylinder (1), one end of the cylinder (1) being a jet port (11) for jetting compressed air, the other end of the cylinder (1) being a cylinder port (13) connected with a cylinder cover (12), the cylinder cover (12) being provided with an air outlet (121) and an air inlet (122), the air outlet (121) being connected with an exhaust valve (2) for releasing gas through an air pipe, and the air inlet (122) being connected with a pneumatic check valve (3) for connecting a gas source to charge the cylinder (1) with gas through an air pipe.

5. A reusable gas cylinder structure as claimed in claim 4, wherein: The inside of the gas cylinder (1) is provided with a gas storage chamber (14), and the gas storage chamber (14) is provided with an exhaust chamber (15). The exhaust chamber (15) is connected with the injection port (11) at the end away from the gas cylinder cover (12). The inner cavity of the gas cylinder cover (12) is provided with a side wall (124) extending to the gas storage chamber (14). The side wall (124) divides the inner cavity of the gas cylinder cover (12) into a pneumatic chamber (125) and a pressure chamber (126). The gas outlet (121) and the gas inlet (122) are arranged in the pneumatic chamber (125). The pneumatic chamber (125) is provided with a piston (127). After the gas cylinder cover (12) is connected with the gas cylinder (1), the piston (127) is kept a distance from the end of the exhaust chamber (15), so that the piston (127) reciprocates in the axial direction between the pneumatic chamber (125) and the end of the exhaust chamber (15).

6. A reusable gas cylinder structure as claimed in claim 5, wherein: The end of the exhaust chamber (15) away from the injection port (11) is fixed in the gas storage chamber (14) through a support (16).

7. A reusable gas cylinder structure as claimed in claim 5 or 6, wherein: The end of the exhaust chamber (15) away from the injection port (11) is provided with a first sealing ring (128).

8. A reusable gas cylinder structure as claimed in claim 2 or 5, wherein: The piston (127) is provided with an exhaust groove (1271) on the outer wall of the side close to the pneumatic chamber (125), or the piston (127) is a circular truncated cone type, and the diameter of the end close to the pneumatic chamber (125) is smaller than the diameter of the end close to the exhaust chamber (15).

9. A reusable gas cylinder structure as claimed in claim 2 or 5, wherein: The side of the piston (127) opposite to the pneumatic chamber (125) is provided with a weight-reducing cavity recessed towards the exhaust chamber (15).

10. A reusable gas cylinder structure as claimed in claim 2 or 3 or 5, wherein: The inner wall of the pressure chamber (126) is provided with a second sealing ring (129) opposite to the position of the gas cylinder port (13).

11. A reusable gas cylinder structure as claimed in claim 1 or 2 or 4, wherein: The connection end of the gas cylinder (1) and the injection port (11) is a cone inclined inward.

12. A reusable gas cylinder structure as claimed in claim 1 or 4, wherein: The pneumatic check valve (3) is connected with a gas filling nozzle (9).

13. A firework tube with a reusable gas cylinder structure, characterized by The firework cylinder body (5) is provided with a firework box (6) in the upper cavity of the firework cylinder body (5).

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