A compressed air quick release assembly

Abstract

The utility model discloses a compressed air quick release assembly, and the assembly comprises a tank body, a spray pipe, a piston assembly, an air inlet pipeline and a guide pipe. The spray pipe adopts a structure that a large-end pipe and a small-end pipe are communicated, and the piston assembly is arranged in the large-end pipe. The piston assembly is composed of a piston gland and a metal piston, and sealing is realized by pressing the metal piston and the sealing end face of the spray pipe. The side wall of the large-end pipe is provided with a pressure relief hole, which communicates the inner cavity of the tank body and the area in front of the sealing end face of the piston. When triggered, the air inlet pipeline is slightly relieved, the high pressure in the tank acts on the end face of the piston through the pressure relief hole to form a pressure difference, and the piston is pushed to quickly retreat to realize the instantaneous release of compressed air. The utility model replaces the traditional diaphragm or rubber piston with the metal piston structure, has the advantages of long service life, low maintenance cost, fast release speed, strong environmental adaptability, simple and reliable structure and high automation degree, and is especially suitable for high-frequency and high-pressure clearing and impact application scenarios.

Description

Technical Field

[0001] This utility model relates to the field of compressed air energy storage and release technology, specifically a compressed air rapid release assembly. Background Technology

[0002] In industrial production, such as clearing blockages in material conveying pipelines, purging equipment surfaces, or applications requiring the generation of shock waves, compressed air rapid release devices are often needed. The existing mainstream technologies mainly include diaphragm type and rubber piston type.

[0003] The diaphragm-type release assembly seals high-pressure gas with a high-strength diaphragm, which ruptures instantaneously upon triggering to release the gas. The disadvantages of this method are: the diaphragm is a disposable consumable and needs to be replaced after each operation, resulting in high maintenance costs and frequency; the diaphragm lifespan is greatly affected by gas cleanliness (oil, water, impurities), making it prone to premature damage; it is not suitable for applications requiring frequent triggering; and it has poor automated continuous operation capabilities.

[0004] Rubber piston-type release assemblies typically use a spring-compressed rubber piston for sealing. Although reusable, they have inherent drawbacks: the rubber material has poor temperature resistance, softening easily at high temperatures and becoming brittle at low temperatures, leading to seal failure or malfunction; it has poor resistance to oil, chemical corrosion, and wear, making it prone to leakage and jamming due to corrosion or wear; it requires high cleanliness of compressed air, as impurities can easily cause piston wear or jamming; its performance deteriorates in low-temperature environments, especially in cold regions where it is prone to failure; its overall lifespan is relatively short, aging rapidly with frequent use, resulting in high replacement costs and maintenance workload.

[0005] Therefore, there is an urgent need in the field for a compressed air rapid release assembly that can guarantee rapid release performance, as well as have a long life, high reliability, low maintenance cost, and strong environmental adaptability. Utility Model Content

[0006] The purpose of this invention is to overcome the aforementioned deficiencies of the prior art and provide a compressed air rapid release assembly. This assembly employs a metal piston structure and achieves rapid triggering and resetting through a clever pressure-guided design, combining the advantages of diaphragm-type rapid release and piston-type reusability, while overcoming the material limitations of rubber pistons.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a compressed air rapid release assembly, comprising: a tank body having a chamber for storing compressed air inside; a nozzle including a large-end pipe and a small-end pipe, the large-end pipe and the small-end pipe being interconnected, and the large-end pipe being connected to the tank body for releasing compressed air; a piston assembly disposed inside the large-end pipe for sealing or opening the inlet of the large-end pipe; an air intake pipe for introducing driving compressed air; and a conduit, one end of which is connected to the air intake pipe, and the other end of which is connected to the chamber of the tank body via a check valve; wherein, the piston assembly includes a piston cap and a metal piston that can slide inside the large-end pipe; when the metal piston is in the sealed position, its end is pressed against the nozzle sealing end face of the large-end pipe to close the chamber; at least one pressure relief hole is provided on the side wall of the large-end pipe or near the nozzle sealing end face, the pressure relief hole connecting the chamber of the tank body to the area acting between the metal piston and the nozzle sealing end face.

[0008] Preferably, the large-end pipe and the small-end pipe are fixedly connected by welding, and both the large-end pipe and the small-end pipe are fixedly connected to the tank body by welding, with the upper end of the large-end pipe and the lower end of the small-end pipe extending to the outside of the tank body.

[0009] Preferably, the metal piston is made of one of stainless steel, aluminum alloy or copper alloy.

[0010] Preferably, the check valve is configured to allow compressed air to flow unidirectionally from the conduit into the chamber of the tank.

[0011] Preferably, the piston gland is fixedly connected to the large end tube by threads, flanges or fasteners.

[0012] Preferably, the number of pressure relief holes is multiple, and they are arranged in a uniform ring array.

[0013] Preferably, the small end tube further includes a connecting flange, which is located at the lower end of the small end tube and integrally formed with the small end tube.

[0014] Beneficial effects This utility model provides a compressed air rapid release assembly, which has the following beneficial effects: 1. Long lifespan and low maintenance: The metal piston replaces the disposable diaphragm or the easily aging rubber piston, which is wear-resistant and corrosion-resistant, and can be reused hundreds of thousands of times, greatly reducing the replacement frequency and maintenance costs.

[0015] 2. Fast release speed: The pressure inside the tank is directly guided through the pressure relief hole to act on the piston end face to generate pressure difference drive, which overcomes the structural defects of traditional rubber pistons that need to overcome spring preload. It has a rapid response and fast release speed.

[0016] 3. Strong environmental adaptability: The metallic material exhibits excellent resistance to high and low temperatures, unaffected by drastic changes in ambient temperature, and can operate stably in cold regions or high-temperature conditions. It also has higher tolerance for oil, water, and impurities in compressed air, resulting in high reliability.

[0017] 4. Simple and reliable structure: It eliminates the easily damaged diaphragm or rubber piston and the matching spring clamping mechanism, making the overall structure simpler and more compact, with a low failure rate, and suitable for high-frequency and high-intensity working scenarios.

[0018] 5. High degree of automation: The entire work cycle (inflation-sealing-trigger release) does not require the replacement of any parts, making it easy to achieve automated control and ensuring stable operation of continuous production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a compressed air rapid release assembly proposed in this utility model; Figure 2 This is a cross-sectional view of the nozzle structure of a compressed air rapid release assembly proposed in this utility model.

[0020] In the diagram: 1. Intake pipe; 2. Metal piston; 3. Piston gland; 4. Guide tube; 5. Check valve; 6. Tank body; 7. Nozzle sealing end face; 8. Pressure relief hole; 9. Nozzle; 10. Large end pipe; 11. Small end pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Please see Figure 1-2 This utility model provides a technical solution: a compressed air rapid release assembly, comprising: a tank 6, the interior of which forms a chamber for storing compressed air; a nozzle 9, the nozzle 9 including a large-end pipe 10 and a small-end pipe 11, the large-end pipe 10 and the small-end pipe 11 being interconnected, and the large-end pipe 10 being connected to the tank 6 for releasing compressed air; a piston assembly, disposed within the large-end pipe 10, for sealing or opening the inlet of the large-end pipe 10; an air intake pipe 1 for introducing driving compressed air; and a conduit 4, one end of which is connected to the air intake pipe 1, and the other end passing through a stop The reverse valve 5 is connected to the chamber of the tank body 6; wherein, the piston assembly includes a piston cap 3 and a metal piston 2 that can slide inside the large end tube 10. The large end tube 10 has a precisely machined guide hole, and the metal piston 2 can slide axially within the guide hole. When the metal piston 2 is in the sealed position, its end is pressed against the nozzle sealing end face 7 of the large end tube 10 to seal the chamber; at least one pressure relief hole 8 is provided on the side wall of the large end tube 10 or near the nozzle sealing end face 7. The pressure relief hole 8 connects the chamber of the tank body 6 with the area acting between the metal piston 2 and the nozzle sealing end face 7.

[0026] The large end pipe 10 and the small end pipe 11 are fixedly connected by welding. Both the large end pipe 10 and the small end pipe 11 are fixedly connected to the tank body 6 by welding. The upper end of the large end pipe 10 and the lower end of the small end pipe 11 extend to the outside of the tank body 6. The small end pipe 11 is the final release channel for compressed air.

[0027] The metal piston 2 is made of stainless steel, aluminum alloy or copper alloy to ensure strength, hardness and corrosion resistance.

[0028] In the initial sealed state, externally controlled compressed air enters through the air intake pipe 1, pushing the metal piston 2 so that its front end presses tightly against the nozzle sealing end face 7, thereby isolating the chamber of the tank 6 from the outside world and achieving a seal.

[0029] The check valve 5 is configured to allow compressed air to flow unidirectionally from the conduit 4 into the chamber of the tank 6.

[0030] The check valve 5 ensures that compressed air can only enter the tank 6 through the conduit 4 and cannot flow in the reverse direction. When compressed air is continuously supplied through the intake pipe 1, a portion of the gas enters the tank 6 through the conduit 4 and the check valve 5, thus pressurizing the tank 6.

[0031] The piston gland 3 is fixedly connected to the large end tube 10 by threads, flanges or fasteners. This design makes it easy to disassemble the piston gland 3, thus facilitating piston disassembly, maintenance or assembly.

[0032] There are multiple pressure relief holes 8, which are evenly arranged in a ring array. These pressure relief holes 8 connect the high-pressure area inside the tank 6 with the rear end of the metal piston 2, that is, the area between the metal piston 2 and the nozzle sealing end face 7, thereby facilitating the release of gas.

[0033] The small end pipe 11 also includes a connecting flange, which is located at the lower end of the small end pipe 11 and is integrally formed with the small end pipe 11. By setting the connecting flange, the small end pipe 11 can be easily connected to the external exhaust pipe.

[0034] Working principle: 1. Inflation and Sealing Stage: Compressed air enters through the intake pipe 1. One stream of gas acts directly on the rear end of the metal piston 2, pushing it forward and pressing it against the nozzle sealing end face 7 to form an initial seal. The other stream of gas passes through the conduit 4, opens the check valve 5, and enters the tank 6 for inflation until the preset pressure is reached.

[0035] 2. Trigger Release Phase: When the system issues a release command, a small, externally controlled solenoid valve (not shown in the figure) performs a momentary pressure relief (i.e., "smile relief") at the intake pipe 1. The pressure in the intake pipe 1 drops rapidly, causing a sharp drop in pressure acting on the rear end of the metal piston 2. Simultaneously, the high-pressure gas in the tank 6 acts rapidly on the front end of the metal piston 2 through the pressure relief hole 8. Due to the huge pressure difference formed instantaneously before and after the piston, the high pressure inside the tank pushes the metal piston 2 to move rapidly backward, disengaging it from the nozzle sealing end face 7. The high-pressure compressed air stored in the tank 6 then enters the large end pipe 10 of the nozzle 9 through the open channel, via the pressure relief hole 8 area, and is then ejected at high speed from the small end pipe 11 of the nozzle 9, forming a strong impact airflow. During this process, the check valve 5 prevents the gas inside the tank from flowing back out, ensuring that the pressure is effectively used to push the piston and release.

[0036] 3. Reset phase: After the release is completed, the system resumes supplying air to the intake pipe 1, the pressure is re-established, and the metal piston 2 is pushed forward again to seal the nozzle sealing end face 7. At the same time, the tank 6 is filled with air through the conduit 4 and the check valve 5 in preparation for the next cycle.

[0037] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compressed air rapid release assembly, characterized in that, include: The tank (6) has a chamber inside for storing compressed air; The nozzle (9) includes a large end pipe (10) and a small end pipe (11), which are connected to each other, and the large end pipe (10) is connected to the tank (6) for releasing compressed air; A piston assembly is disposed inside the large end tube (10) for sealing or opening the inlet of the large end tube (10); Intake pipe (1) is used to introduce driving compressed air; The conduit (4) has one end connected to the air intake pipe (1) and the other end connected to the chamber of the tank (6) via a check valve (5); The piston assembly includes a piston cap (3) and a metal piston (2) that can slide inside the large end tube (10); when the metal piston (2) is in the sealed position, its end is pressed against the nozzle sealing end face (7) of the large end tube (10) to seal the chamber; at least one pressure relief hole (8) is provided on the side wall of the large end tube (10) or near the nozzle sealing end face (7), and the pressure relief hole (8) connects the chamber of the tank (6) with the area between the metal piston (2) and the nozzle sealing end face (7).

2. The compressed air rapid release assembly according to claim 1, characterized in that: The large end pipe (10) and the small end pipe (11) are fixedly connected by welding. Both the large end pipe (10) and the small end pipe (11) are fixedly connected to the tank body (6) by welding. The upper end of the large end pipe (10) and the lower end of the small end pipe (11) extend to the outside of the tank body (6).

3. The compressed air rapid release assembly according to claim 1, characterized in that: The metal piston (2) is made of one of stainless steel, aluminum alloy or copper alloy.

4. The compressed air rapid release assembly according to claim 1, characterized in that: The check valve (5) is configured to allow compressed air to flow unidirectionally from the conduit (4) into the chamber of the tank (6).

5. The compressed air rapid release assembly according to claim 1, characterized in that: The piston cap (3) is fixedly connected to the large end tube (10) by threads, flanges or fasteners.

6. The compressed air rapid release assembly according to claim 1, characterized in that: The number of pressure relief holes (8) is multiple, and they are arranged in a uniform ring array.

7. The compressed air rapid release assembly according to claim 1, characterized in that: The small end tube (11) also includes a connecting flange, which is located at the lower end of the small end tube (11) and is integrally formed with the small end tube (11).

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