An air blast device

Abstract

This invention provides an air explosion device, comprising an explosive body, which is a hollow cylinder with an explosion port at the top. Protruding rings are fixed to the inner walls of the top and bottom of the explosive body. A sliding shaft assembly is installed inside the explosive body, and a central shaft assembly is enclosed within the sliding shaft assembly. A tail plate is fixed to the top of the central shaft assembly, and the bottom of the central shaft assembly is fixed to the bottom of the explosive body. The explosive body, central shaft assembly, tail plate, and sliding shaft assembly together form an air chamber structure. Compared to existing technologies, the explosive body can store compressed air, which can be released instantaneously through the movement of the sliding shaft, generating an explosion sound and shock wave. It can be used as a bird deterrent, a salute cannon, a seismic air gun, a blockage clearer, a blasting device, a drum, or other products that use compressed air to generate an explosion sound or impact force. It is not only safe and environmentally friendly but also more effective. Colored paper, water, or colored smoke can also be added inside the explosive cylinder to enhance the effect.

Description

Technical Field

[0001] This invention relates to the field of air gun technology, specifically to an air explosion device. Background Technology

[0002] Bird deterrents, cannons, artificial seismic sources, blockage clearers, and blasting devices are traditional products that generate explosive sounds or impacts. These are generally gunpowder-based, electronic audio-visual, or liquefied gas-based products. These types are either highly polluting, extremely dangerous, or ineffective.

[0003] Existing environmentally friendly and pollution-free air explosion devices, such as the novel air gun proposed in patent CN206281408U, involve compressed air entering the upper air chamber through an inlet on the gun head. The compressed air and a spring in the upper air chamber push a sliding sleeve downwards until the explosion port is sealed. Simultaneously, the compressed air opens a one-way valve, flowing into the storage chamber. This ultimately achieves pressure balance between the storage chamber and the upper air chamber, both filled with high-pressure air. When the solenoid valve is energized for a single activation, the valve core engages, moves upwards briefly, and then quickly returns to its original position, opening the first... After the passage and expansion chamber are connected briefly, they are quickly isolated. The high-pressure air in the upper chamber flows into the expansion chamber through the first passage, and the pressure will decrease. Meanwhile, the compressed air in the storage chamber is blocked by the one-way valve and cannot flow out. The high-pressure air in the storage chamber pushes the sliding sleeve upward. When the larger diameter part below the slope of the sliding sleeve moves above the sealing ring, the high-pressure air in the upper chamber quickly leaks out from the vent formed by the gap between the sliding sleeve and the gun head. At this time, the sliding sleeve will move upward quickly to open the explosion port. The high-pressure air in the storage chamber is instantly discharged from the explosion port, making an explosion sound and generating seismic waves.

[0004] The above-mentioned solution has a complex technical structure. The sealing ring under the sliding sleeve is easily damaged or blown off when the explosion port explodes. The explosion port spreads outwards from the center, making it impossible to concentrate the impact in one direction. Furthermore, the application effect is limited and it is inconvenient to fill with materials such as colored paper, water, or colored smoke. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an air explosion device to solve the problems mentioned in the background section. The present invention has a novel structure, and the explosive body can store compressed air. The compressed air can be released instantaneously through the movement of a sliding shaft to generate an explosion sound and shock wave. It can be used as a bird deterrent, a salute cannon, a seismic air gun, a blockage clearer, a blasting device, or other products that can use compressed air to generate an explosion sound or impact force. It can also be used to make new types of drums, which are not only safe and environmentally friendly, but also have better effects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an air explosion device, comprising an explosive body.

[0007] Preferably, the explosive body is a hollow cylinder with an explosion port at the top. A first convex ring is fixed on the inner wall of the top of the explosive body, and a second convex ring is fixed on the inner wall of the bottom of the explosive body. A sliding shaft assembly is installed inside the explosive body, and a central shaft assembly is wrapped inside the sliding shaft assembly. A tail plate is fixed on the top of the central shaft assembly, and the bottom of the central shaft assembly is fixed to the bottom of the explosive body. The explosive body, the central shaft assembly, the sliding shaft assembly, and the tail plate together form a gas chamber structure, and the gas chamber structure can generate an explosion sound and impact force through compressed air.

[0008] Preferably, the central shaft assembly is a circular shaft, with a large-diameter shaft at the bottom, a medium-diameter shaft in the middle, and a small-diameter shaft at the top. A first air hole is provided on one side of the interior of the central shaft assembly, and a second air hole is provided on the other side. The first air hole extends from the large-diameter shaft to the upper part of the small-diameter shaft, and the second air hole extends from the large-diameter shaft to the middle. The tail ends of the first air hole and the second air hole are respectively connected to a first air outlet and a second air outlet.

[0009] Preferably, the second air hole is connected to an air source, the first air hole is connected to the air outlet of a solenoid valve or a manual switch valve, and the air inlet of the solenoid valve or the manual switch valve is connected to an air source.

[0010] Preferably, the sliding shaft assembly is a hollow circular shaft, with a lower hollow shaft at the bottom and a speed-increasing boss at the bottom. Above the speed-increasing boss is a bottom sealing shaft. The middle part of the sliding shaft assembly is a hollow shaft, and the upper part of the sliding shaft assembly is an upper hollow shaft. The upper part of the sliding shaft assembly is a top sealing shaft. The hollow shaft is in sealing sliding contact with the small-diameter shaft, the inner circle of the lower hollow shaft is in sealing sliding contact with the middle-diameter shaft, the upper hollow shaft is in sliding contact with the tail disc, the top sealing shaft is in sealing sliding contact with the first convex ring at the top of the explosive body, and the bottom sealing shaft is in sealing sliding contact with the second convex ring at the bottom of the explosive body. A third vent is provided in the middle of the sliding shaft assembly.

[0011] Preferably, the explosive body has an inner hole at its bottom, and the speed-increasing boss at the bottom of the sliding shaft assembly slides along the inside of the inner hole.

[0012] Preferably, an auxiliary return spring is provided between the upper part of the intermediate diameter shaft and the lower part of the hollow shaft, or between the upper part of the large diameter shaft and the bottom of the sliding shaft assembly.

[0013] Preferably, the gas chamber structure includes a main gas chamber, a release gas chamber, a reset gas chamber, and an activation gas chamber. The central shaft assembly, tail plate, and sliding shaft assembly form the activation gas chamber. The first gas outlet communicates with the activation gas chamber. The explosive body and the sliding shaft assembly form the main gas chamber. The central shaft assembly and the sliding shaft assembly form the reset gas chamber. The second gas outlet communicates with the reset gas chamber. The reset gas chamber communicates with the main gas chamber through the third gas hole. The inner wall of the explosive body, the bottom of the central shaft assembly, and the bottom of the sliding shaft assembly form the release gas chamber.

[0014] Preferably, a one-way valve can be installed at the third air port, with the one-way valve directing the flow from the reset air chamber to the main air chamber.

[0015] Preferably, the top circumference of the explosive body can extend upward to form an explosive tube.

[0016] Preferably, the tail plate is a ring, the inner circle of the tail plate is fixed to the upper part of the central shaft assembly, and the outer circle of the tail plate slides within the hollow shaft of the sliding shaft assembly.

[0017] The beneficial effects of the present invention: An air explosion device of the present invention includes an explosive body; a first convex ring; an explosion port; an inner hole; a second convex ring; a central shaft assembly; a large-diameter shaft; a first air hole; a second air hole; a middle-diameter shaft; a small-diameter shaft; a first air outlet; a second air outlet; a sliding shaft assembly; a lower hollow shaft; a middle hollow shaft; an upper hollow shaft; a third air hole; a speed-increasing boss; a bottom sealing shaft; a top sealing shaft; a tail plate; a gas chamber structure; a main gas chamber; a release gas chamber; a reset gas chamber; and an activation gas chamber.

[0018] 1. When this air explosion device is in use, the solenoid valve or manual switch valve is initially in the closed state. The air source provides compressed air into the second air port, and through the second air port into the reset air chamber. The compressed air in the reset air chamber pushes the sliding shaft assembly to move upward, so that the main air chamber is in a sealed state, and compressed air enters the main air chamber.

[0019] 2. When the compressed air is charged to the set pressure, and the air explosion device needs to be activated, the solenoid valve or manual switch valve is opened. The compressed air from the air source enters the first air hole through the solenoid valve or manual switch valve, and then enters the activation air chamber through the first air outlet. The compressed air in the activation air chamber pushes the sliding shaft assembly to move downward. The bottom sealing shaft and the second convex ring open, causing leakage. The compressed air is applied to the cross section of the speed-increasing convex platform, accelerating the downward movement of the sliding shaft assembly. The explosion port is quickly opened, and the compressed air in the main air chamber is released instantaneously through the explosion port, generating an explosion sound and impact force.

[0020] 3. After the valve of this air explosion device is closed, the gas in the ignition chamber can leak to atmospheric pressure. The sliding shaft assembly moves upward under the pressure of compressed air in the reset chamber or the action of a reset spring, resealing the explosion port and the bottom sealing shaft with the second convex ring. The one-way valve at the third air port allows air to flow from the reset chamber to the main chamber, preventing compressed air from flowing back out of the main chamber when the valve is open. The gas in the release chamber and the ignition chamber can leak out in one direction, and the leakage rate is adjustable.

[0021] 4. Compared with existing technologies, this air explosion device can store compressed air inside the explosion body. The compressed air can be released instantly through the movement of the sliding shaft to generate an explosion sound and shock wave. It can be used as a bird deterrent, ceremonial cannon, seismic air gun, blockage clearer, blasting device, etc., which can use compressed air to generate an explosion sound or impact force. It is not only safe and environmentally friendly, but also more effective. Colored paper, water, colored smoke, etc. can be put into the explosion tube to enhance the effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an air explosion device according to the present invention;

[0023] Figure 2 This is a schematic diagram showing the separation of the explosive body, central shaft assembly, and sliding shaft assembly of an air explosion device according to the present invention;

[0024] Figure 3 This is a schematic diagram of the gas chamber structure of an air explosion device according to the present invention;

[0025] Figure 4 This is an enlarged schematic diagram of region A of an air explosion device according to the present invention;

[0026] Figure 5 This is an enlarged schematic diagram of the structure of region B of an air explosion device according to the present invention;

[0027] In the diagram: 1. Explosive body; 11. First convex ring; 12. Explosion port; 13. Inner hole; 14. Second convex ring; 2. Central shaft assembly; 21. Large diameter shaft; 211. First vent; 212. Second vent; 22. Middle diameter shaft; 23. Small diameter shaft; 24. First vent; 25. Second vent; 3. Sliding shaft assembly; 31. Lower hollow shaft; 32. Middle hollow shaft; 33. Upper hollow shaft; 34. Third vent; 35. Speed-increasing boss; 36. Bottom sealing shaft; 37. Top sealing shaft; 4. Tail disc; 5. Gas chamber structure; 51. Main gas chamber; 52. Release gas chamber; 53. Reset gas chamber; 54. Activation gas chamber. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] Please see Figures 1 to 5 This invention provides a technical solution: an air explosion device, comprising an explosive body 1, which is a hollow cylinder with an explosion port 12 at the top. A first protruding ring 11 is fixed on the inner wall of the top of the explosive body 1, and a second protruding ring 14 is fixed on the inner wall of the bottom of the explosive body 1. A sliding shaft assembly 3 is installed inside the explosive body 1, and a central shaft assembly 2 is wrapped inside the sliding shaft assembly 3. A tail plate 4 is fixed on the top of the central shaft assembly 2, and the bottom of the central shaft assembly 2 is fixed to the bottom of the explosive body 1. The explosive body 1, the central shaft assembly 2, the sliding shaft assembly 3, and the tail plate 4 together form an air chamber structure 5. The air chamber structure 5 can generate an explosion sound and impact force through compressed air. In use, the air chamber structure 5 cooperates with the explosive body 1, the central shaft assembly 2, and the sliding shaft assembly 3. Compressed air is stored inside the explosive body 1, and the compressed air can be released instantaneously through the movement of the sliding shaft, generating an explosion sound and shock wave.

[0030] In this embodiment, the central shaft assembly 2 is a circular shaft. The bottom of the central shaft assembly 2 is a large-diameter shaft 21, the middle part of the central shaft assembly 2 is a medium-diameter shaft 22, and the upper part of the central shaft assembly 2 is a small-diameter shaft 23. On one side inside the central shaft assembly 2, a first air hole 211 is opened, and on the other side of the central shaft assembly 2, a second air hole 212 is opened. The first air hole 211 extends from the large-diameter shaft 21 to the upper part of the small-diameter shaft 23, and the second air hole 212 extends from the large-diameter shaft 21 to the middle part. The ends of the first air hole 211 and the second air hole 212 are respectively connected to a first air outlet 24 and a second air outlet 25. The second air hole 212 is connected to a gas source, and the gas source supplies compressed air into the second air hole 212. The first air hole 211 is connected to the air outlet of a solenoid valve or a manual switch valve, and the inlet of the solenoid valve or the manual switch valve is connected to the gas source. The solenoid valve or the manual switch valve is initially in a closed state (the solenoid valve adopts a two-position two-way normally closed valve, and its models include RUIQIIT / Ruizhite 2V025-08, AMSI / Aima Shi Q22XD-2L, etc. The manual switch valve adopts a two-position two-way normally closed valve, including models such as MOV-03A, TAC-MVHA-3p, etc. The solenoid valve and the manual switch valve in the solution are both prior arts, and the above are only some applicable ones). The gas source supplies compressed air into the second air hole 212. The sliding shaft assembly 3 is a hollow circular shaft. Inside the bottom of the sliding shaft assembly 3 is a lower hollow shaft 31, and outside the bottom of the sliding shaft assembly 3 is an acceleration boss 35. Above the acceleration boss 35 is a bottom sealing shaft 36. The middle part of the sliding shaft assembly 3 is a middle hollow shaft 32. Inside the top of the sliding shaft assembly 3 is an upper hollow shaft 33, and outside the top of the sliding shaft assembly 3 is a top sealing shaft 37. The middle hollow shaft 32 is in sealed sliding contact with the small-diameter shaft 23. The inner circle of the lower hollow shaft 31 is in sealed sliding contact with the medium-diameter shaft 22. The upper hollow shaft 33 is in sliding contact with the tail plate 4. The top sealing shaft 37 is in sealed sliding contact with the first convex ring 11 at the top of the explosive body 1. The bottom sealing shaft 36 is in sealed sliding contact with the second convex ring 14 at the bottom of the explosive body 1. An inner hole 13 is opened at the bottom of the explosive body 1, and the acceleration boss 35 at the bottom of the sliding shaft assembly 3 slides along the inside of the inner hole 13. A third air hole 34 is opened in the middle part of the sliding shaft assembly 3, and a check valve can be installed at the third air hole 34. An auxiliary return spring is provided between the upper part of the medium-diameter shaft 22 and the lower part of the middle hollow shaft 32 or between the upper part of the large-diameter shaft 21 and the bottom of the sliding shaft assembly 3. The outer wall of the tail plate 4 slides along the inside of the upper hollow shaft 33.The gas chamber structure 5 includes a main gas chamber 51, a release gas chamber 52, a reset gas chamber 53, and an activation gas chamber 54. The central shaft assembly 2, the tail plate 4, and the sliding shaft assembly 3 form the activation gas chamber 54. The first gas outlet 24 communicates with the activation gas chamber 54. The explosive body 1 and the sliding shaft assembly 3 form the main gas chamber 51. The central shaft assembly 2 and the sliding shaft assembly 3 form the reset gas chamber 53. The second gas outlet 25 communicates with the reset gas chamber 53. The reset gas chamber 53 communicates with the main gas chamber 51 through the third gas hole 34. The inner wall of the explosive body 1, the bottom of the central shaft assembly 2, and the bottom of the sliding shaft assembly 3 form the release gas chamber 52. Compressed air enters the reset chamber 53 through the air hole. The compressed air in the reset chamber 53 pushes the slide shaft assembly 3 to move upward. When the speed-increasing boss 35 at the bottom of the slide shaft assembly 3 touches the second protruding ring 14 of the explosive body 1, it stops moving. The top sealing shaft 37 of the slide shaft assembly 3 contacts the first protruding ring 11 of the explosive body 1, sealing the explosion port 12 to prevent air leakage. The bottom sealing shaft 36 of the slide shaft assembly 3 contacts the second protruding ring 14 of the explosive body 1, sealing the two to prevent air leakage. Compressed air enters the main chamber 51 through the third air hole 34.

[0031] In use, the solenoid valve or manual switch valve is initially closed. Compressed air supplied by the air source enters the second air port 212 and enters the reset air chamber 53 through the second air port 212. The compressed air in the reset air chamber 53 pushes the slide shaft assembly 3 to move upward. The speed-increasing boss 35 at the bottom of the slide shaft assembly 3 stops moving when it touches the lower part of the second convex ring 14 of the explosive body 1. The top sealing shaft 37 above the slide shaft assembly 3 contacts the first convex ring 11 of the explosive body 1, sealing the explosion port 12 to prevent air leakage. The bottom sealing shaft 36 at the bottom of the slide shaft assembly 3 contacts the second convex ring 14 of the explosive body 1, sealing the two to prevent air leakage. Compressed air enters the main air chamber 51 through the second air hole 212, the second air outlet 25, the reset air chamber 53, and the third air hole 34. When the compressed air reaches the set pressure, and the air explosion device needs to be activated, the solenoid valve or manual switch valve is opened. The compressed air from the air source enters the first air hole 211 through the solenoid valve or manual switch valve, and then enters the activation air chamber 54 through the first air outlet 24. The compressed air in the activation air chamber 54 pushes the sliding shaft assembly 3 downward. The bottom sealing shaft 36 and the second convex ring 14 open, causing leakage. The compressed air is applied to the cross section of the speed-increasing boss 35, accelerating the sliding shaft assembly 3 downward. The explosion port 12 is quickly opened, and the compressed air in the main air chamber 51 is released instantly through the explosion port 12, generating an explosion sound and impact force.

[0032] After the valve is closed, the gas in the ignition chamber 54 can leak to normal pressure. The sliding shaft assembly 3 moves upward under the pressure of compressed air in the reset chamber 53 or the action of the reset spring, resealing the explosion port 12 and the bottom sealing shaft 36 with the second convex ring 14. The one-way valve at the third air hole 34 allows air to flow from the reset chamber 53 to the main chamber 51, preventing the compressed air in the main chamber 51 from flowing back out when the valve is open. The gas in the release chamber 52 and the ignition chamber 54 can leak out in one direction, and the leakage rate is adjustable.

[0033] Additionally, the top of the explosive device 1 can be extended appropriately along the outer wall to facilitate the placement of colored paper, water, colored smoke, colored balls, etc. inside to enhance the effect.

[0034] The circular structure of the explosive body 1, central shaft assembly 2, sliding shaft assembly 3, and tail plate 4 described above is only a preferred option; other shapes may be used for practical purposes.

[0035] The explosion sound and shock wave generated by this invention can be used to create ceremonial cannon sounds, drum sounds, artificial seismic waves, and to drive away birds, clear blockages, and split rocks. Therefore, the device of this invention can be used to make bird deterrents, ceremonial cannons, seismic air guns, blockage clearers, blasting devices, drums, and other products that require the emission of explosive sounds or the generation of impact forces.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An air explosion device, comprising an explosive body (1), the explosive body (1) being a hollow cylinder, and an explosion port (12) being provided at the top of the explosive body (1), a first protruding ring (11) being fixed on the inner wall of the top of the explosive body (1), and a second protruding ring (14) being fixed on the inner wall of the bottom of the explosive body (1), a sliding shaft assembly (3) being installed inside the explosive body (1), and a central shaft assembly (2) being wrapped inside the sliding shaft assembly (3), a tail plate (4) being fixed at the top of the central shaft assembly (2), and the bottom of the central shaft assembly (2) being fixed together with the bottom of the explosive body (1), the explosive body (1), the central shaft assembly (2), the sliding shaft assembly (3), and the tail plate (4) together forming an air chamber structure (5), and the air chamber structure (5) The explosion sound and impact force are generated by compressed air. The central shaft assembly (2) is a circular shaft. The bottom of the central shaft assembly (2) is a large-diameter shaft (21), the middle part of the central shaft assembly (2) is a medium-diameter shaft (22), and the upper part of the central shaft assembly (2) is a small-diameter shaft (23). A first air hole (211) is opened on one side of the interior of the central shaft assembly (2), and a second air hole (212) is opened on the other side of the central shaft assembly (2). The first air hole (211) extends from the large-diameter shaft (21) to the upper part of the small-diameter shaft (23), and the second air hole (212) extends from the large-diameter shaft (21) to the middle part. The tail ends of the first air hole (211) and the second air hole (212) are respectively connected to a first air outlet (24) and a second air outlet (25). The sliding shaft assembly (3) is a hollow circular shaft. The bottom of the sliding shaft assembly (3) is a lower hollow shaft (31), and the bottom of the sliding shaft assembly (3) is an acceleration boss (35). Above the acceleration boss (35) is a bottom sealing shaft (36). The middle part of the sliding shaft assembly (3) is a hollow shaft (32). The top of the sliding shaft assembly (3) is an upper hollow shaft (33), and the top of the sliding shaft assembly (3) is a top sealing shaft (37). The hollow shaft (32) is in sealed sliding contact with the small diameter shaft (23). The inner circle of the lower hollow shaft (31) is in sealed sliding contact with the middle diameter shaft (22). The upper hollow shaft (33) is in sliding contact with the tail disc (4). The top sealing shaft (37) is sealed with the first convex ring (11) at the top of the explosive body (1). The bottom sealing shaft (36) and the second convex ring (14) at the bottom of the explosive body (1) are in sliding contact. The middle part of the sliding shaft assembly (3) is provided with a third air hole (34). An auxiliary return spring is provided between the upper part of the middle diameter shaft (22) and the lower part of the hollow shaft (32) or between the upper part of the large diameter shaft (21) and the bottom of the sliding shaft assembly (3). The air chamber structure (5) includes a main air chamber (51), a release air chamber (52), a reset air chamber (53) and an activation air chamber (54). The central shaft assembly (2), the tail plate (4) and the sliding shaft assembly (3) form the activation air chamber (54). The first air outlet (24) is connected to the activation air chamber (54). The explosive body (1) and the sliding shaft assembly (3) form the main air chamber (51).The central shaft assembly (2) and the sliding shaft assembly (3) form a reset chamber (53). The second air outlet (25) communicates with the reset chamber (53). The reset chamber (53) communicates with the main chamber (51) through the third air hole (34). The inner wall of the explosive body (1), the bottom of the central shaft assembly (2), and the bottom of the sliding shaft assembly (3) form a release chamber (52).

2. The air explosion device according to claim 1, characterized in that: The second air hole (212) is connected to the air source, the first air hole (211) is connected to the air outlet of the solenoid valve or the manual switch valve, and the air inlet of the solenoid valve or the manual switch valve is connected to the air source.

3. The air explosion device according to claim 1, characterized in that: The explosive body (1) has an inner hole (13) at the bottom, and the speed-increasing boss (35) at the bottom of the sliding shaft assembly (3) slides along the inside of the inner hole (13).

4. An air explosion device according to claim 1, characterized in that: A one-way valve is installed at the third vent (34).

5. An air explosion device according to claim 1, characterized in that: The top circumference of the explosive body (1) extends upward to form an explosive tube.

6. An air explosion device according to claim 1, characterized in that: The tail plate (4) is a ring. The inner circle of the tail plate (4) is fixed together with the upper part of the central shaft assembly (2), and the outer circle of the tail plate (4) slides in the hollow shaft (33) on the sliding shaft assembly.

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