A high-pressure pneumatic warehouse cleaning device air pressure stabilizing mechanism

Abstract

This utility model discloses a pneumatic pressure stabilizing mechanism for a high-pressure pneumatic cleaning device, including a valve cover, a diaphragm, and a valve housing. The valve housing has a pressure stabilizing chamber, an outlet chamber, and an inlet chamber arranged from top to bottom, with a conical valve port between the inlet and outlet chambers. It also includes a cylinder, a buffer piston, a seat, and a valve core. The cylinder is sealed to the upper surface of the diaphragm via a pressure regulating spring. The buffer piston is slidably disposed inside the cylinder and connected to a resistance spring. The seat is installed at the center of the diaphragm to connect the pressure stabilizing chamber and the cylinder. The valve core is disposed inside the inlet chamber and cooperates with the conical valve port; its top is kept in contact with the seat via a valve stem and a support spring. This mechanism automatically adjusts the valve core opening by sensing pressure changes through the diaphragm to maintain stable output air pressure; simultaneously, the buffer piston system effectively absorbs pressure fluctuations and prevents air hammer. It has advantages such as high pressure stabilization accuracy, good buffering effect, convenient adjustment, and reliable operation, significantly improving the working performance and service life of the cleaning device.

Description

Technical Field

[0001] This utility model relates to the field of pressure stabilizing mechanism technology, specifically a pneumatic pressure stabilizing mechanism for a high-pressure pneumatic cleaning device. Background Technology

[0002] Material silos (such as hoppers and silos) are widely used in industries such as coal, power, chemicals, and grain. During long-term operation, material accumulation, adhesion, or caking can easily occur on the silo walls, severely affecting material flow and storage efficiency, and even causing blockages. To ensure the normal operation of material silos, high-pressure pneumatic cleaning devices are often used. These devices inject high-pressure gas into the silo through air supply pipelines located on the outer wall to remove material adhering to the silo walls.

[0003] High-pressure pneumatic cleaning devices typically include components such as an air source, air supply lines, control valves, and nozzles. In practical applications, frequent start-ups and shutdowns or airflow adjustments during cleaning operations can easily lead to pressure fluctuations in the air supply lines. These pressure fluctuations not only affect the stability of the cleaning effect but can also impact components such as the air supply lines, connectors, and nozzles, causing equipment damage or shortening its lifespan. Especially when high-pressure gas is suddenly switched on or off, the sudden change in airflow momentum can trigger water hammer, generating high-pressure or negative-pressure shock waves, further exacerbating system instability.

[0004] To address these issues, traditional pneumatic systems often employ pressure regulating valves or buffer devices to smooth out pressure fluctuations. For example, some pressure regulating valves use springs and diaphragms to sense changes in outlet pressure and adjust the valve opening to maintain stable output pressure. However, these structures often exhibit delayed response or limited buffering effect when dealing with transient pressure shocks from frequent start-stop cycles, making it difficult to effectively eliminate the damage caused by pressure waves to the system. Furthermore, existing pressure regulating mechanisms are mostly designed for continuous gas supply conditions and lack dedicated buffering mechanisms for high-frequency on / off conditions, resulting in poor performance in cleaning devices.

[0005] Therefore, there is an urgent need for a pressure stabilizing mechanism specifically designed for high-pressure pneumatic cleaning devices, which can not only maintain the stability of high-pressure gas delivery, but also effectively absorb the pressure wave impact generated by frequent switching, thus protecting the safe operation of the gas supply pipeline and the entire device. Utility Model Content

[0006] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a pneumatic pressure stabilizing mechanism for a high-pressure pneumatic cleaning device, which solves the core pain point of pressure instability and system shock caused by frequent start-stop of the high-pressure pneumatic cleaning device. It realizes the dual functions of pressure stabilization and buffering, and has good adjustability and reliability, and has high practical value and market prospects.

[0007] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a pneumatic pressure stabilizing mechanism for a high-pressure pneumatic cleaning device, comprising a valve cover, a diaphragm, and a valve housing arranged sequentially from top to bottom. The valve housing has an inlet chamber, an outlet chamber, and a pressure stabilizing chamber arranged sequentially from bottom to top. A tapered valve port, narrow at the top and wide at the bottom, is provided between the inlet chamber and the outlet chamber. The outlet chamber is kept in communication with the pressure stabilizing chamber. The diaphragm is sealed and pressed between the valve cover and the valve housing.

[0008] It also includes a cylinder, a buffer piston, a seat, and a valve core. The cylinder is assembled into the valve cover and is kept in sealed contact with the upper surface of the diaphragm by a pressure regulating spring. The buffer piston is slidably assembled into the cylinder and is connected with a resistance spring. The seat is assembled to the axis of the diaphragm and is used to ensure that the pressure stabilizing chamber and the cylinder are in communication. The valve core is arranged in the inlet cavity and cooperates with the conical valve port for air pressure regulation. A valve stem is fixed to the top axis of the valve core and slidably installed in the valve housing. The valve stem is kept in contact with the seat by a support spring.

[0009] Based on the above technical solutions, when using a high-pressure pneumatic cleaning device to effectively clean the inner walls of silos and hoppers, in order to ensure that the inlet and outlet chambers of the valve shell can be effectively connected to the air supply pipe and to achieve effective communication between the outlet chamber and the pressure stabilizing chamber, the following technical solutions are provided.

[0010] The inlet and outlet chambers are respectively connected to an air inlet and an air outlet, which are respectively arranged on both sides of the valve housing. The outlet chamber and the pressure stabilizing chamber are connected through a communication port opened on the valve housing, and the communication port is distributed in a ring array.

[0011] Based on the above technical solutions, in order to ensure that the valve stem can always be driven by the diaphragm and the pad, and cooperate with the support spring to drive the valve core to run stably along the axial direction, and cooperate with the conical valve port to realize automatic regulation of air pressure, the following technical solutions are provided.

[0012] An assembly groove is provided at the center of the pressure stabilizing chamber. The valve stem slides through the assembly groove. A positioning ring is fixed to the top of the valve stem. The support spring is arranged around the valve stem and its two ends are in contact with the positioning ring and the assembly groove, respectively. The valve core is configured as a tapered structure that is narrow at the top and wide at the bottom and is nested with the tapered valve port.

[0013] Based on the above technical solutions, in order to ensure that the pad can connect the pressure regulating chamber and the cylinder inner cavity, the following technical solution is provided.

[0014] The top of the pad has an axial through hole, and the sidewall of the pad has multiple sets of radial through holes arranged in a ring array. The radial through holes are arranged below the diaphragm and are in communication with the axial through hole.

[0015] Based on the above technical solutions, in order to achieve active adjustment of the output pressure and ensure the pressure range during stable transmission of high-pressure gas, the following technical solutions are provided.

[0016] A gasket is provided on the bottom outer edge of the cylinder, and a pressure regulating cover is screwed onto the top of the valve cover. The pressure regulating spring is arranged around the cylinder, and both ends of the pressure regulating spring are in contact with the gasket and the pressure regulating cover, respectively.

[0017] Based on the above technical solution, in order to facilitate the adjustment of the tension of the resistance spring and thus adjust the jumping amplitude of the buffer piston under the impact of pressure waves, the following technical solution is provided.

[0018] A rotating seat is rotatably mounted at the center of the pressure regulating cover. A splined shaft is fixedly connected to the center of the rotating seat. An adjusting sleeve is screwed to the center of the top of the cylinder. The top of the adjusting sleeve is slidably inserted into the splined shaft. A pressure ring is provided around the bottom of the adjusting sleeve. A guide sleeve inserted into the adjusting sleeve is fixedly connected to the center of the top of the buffer piston. The resistance spring is arranged around the guide sleeve and its two ends are respectively in contact with the pressure ring and the buffer piston.

[0019] The beneficial effects of this utility model are: 1. By sensing changes in oral air pressure through a diaphragm, and utilizing the pressure difference across the diaphragm and the combined force of the pressure regulating spring, the valve stem dynamically adjusts the opening of the valve core and the conical valve orifice, forming a negative feedback closed-loop control system. This system can sensitively and automatically respond to fluctuations in outlet pressure and quickly make adjustments, ensuring that the high-pressure gas continuously delivered to the cleaning nozzle is precisely maintained within a constant preset range, thereby significantly improving the reliability and consistency of the cleaning effect.

[0020] 2. A buffer system consisting of a cylinder, a buffer piston, and a resistance spring is introduced, which is connected to the pressure stabilizing chamber through a throttling orifice (axial and radial through-holes) on the pad. When frequent on / off switching of the air supply line generates instantaneous pressure shocks, the high-pressure airflow acts on the buffer piston through the throttling orifice, causing it to compress or release the resistance spring. This converts the intense pressure wave energy into piston kinetic energy and spring potential energy, effectively absorbing and dissipating it. This greatly suppresses air hammer, prevents pressure waves from causing structural damage to the downstream air supply line, nozzles, and the entire cleaning device, and extends the equipment's service life.

[0021] 3. By turning the pressure regulating cap, the preload of the pressure regulating spring can be directly changed, thereby flexibly setting the system's output pressure value to adapt to the pressure range requirements of different cleaning conditions. By turning the rotating seat and splined shaft, the preload of the resistance spring can be adjusted, thereby changing the damping characteristics of the buffer piston movement. This allows the buffer system to be optimized for different pressure impact intensities, enhancing the applicability and adaptability of the mechanism. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 A structural schematic diagram of the valve cover and the components assembled therein; Figure 4 A schematic diagram of the structure of the matching assembly for the buffer piston and rotating seat; Figure 5 This is a schematic diagram of the pad's structure.

[0023] In the diagram: 1 Valve cover, 11 Pressure regulating cover, 12 Rotary seat, 13 Splined shaft, 2 Diaphragm, 3 Valve housing, 31 Inlet chamber, 32 Outlet chamber, 33 Pressure regulating chamber, 34 Conical valve port, 35 Air inlet interface, 36 Air outlet interface, 37 Connecting port, 38 Assembly groove, 39 Sealing sleeve, 4 Cylinder, 41 Pressure regulating spring, 42 Washer ring, 43 Adjusting sleeve, 44 Pressure ring, 5 Buffer piston, 51 Resistance spring, 52 Guide sleeve, 6 Pad, 61 Axial through hole, 62 Radial through hole, 7 Valve core, 71 Valve stem, 72 Support spring, 73 Positioning ring. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-5 A pneumatic pressure stabilizing mechanism for a high-pressure pneumatic cleaning device includes a valve cover 1, a diaphragm 2, and a valve housing 3 arranged sequentially from top to bottom. The valve housing 3 has an inlet chamber 31, an outlet chamber 32, and a pressure stabilizing chamber 33 arranged sequentially from bottom to top. A tapered valve port 34, narrow at the top and wide at the bottom, is provided between the inlet chamber 31 and the outlet chamber 32. The outlet chamber 32 and the pressure stabilizing chamber 33 are kept in communication. The diaphragm 2 is sealed and pressed between the valve cover 1 and the valve housing 3.

[0026] It also includes a cylinder 4, a buffer piston 5, a pad 6, and a valve core 7. The cylinder 4 is assembled into the valve cover 1 and is sealed against the upper surface of the diaphragm 2 by a pressure regulating spring 41. The buffer piston 5 is slidably assembled into the cylinder 4 and is connected with a resistance spring 51. The pad 6 is assembled to the axis of the diaphragm 2 and is used to ensure that the pressure stabilizing chamber 33 is in communication with the cylinder 4. The valve core 7 is arranged in the inlet 31 and cooperates with the conical valve port 34 to regulate the air pressure. A valve stem 71 is fixed to the top axis of the valve core 7 and is slidably installed in the valve housing 3. The valve stem 71 is held against the pad 6 by a support spring 72.

[0027] The pneumatic cleaning device removes material buildup adhering to the material silo walls by arranging air supply pipes on the outer wall of the silo and injecting high-pressure gas into the silo, ensuring the normal operation of the silo. When supplying high-pressure gas to nozzles located inside the silo through the air supply pipes, the pressure stabilizing mechanism provided in this application ensures the stability of the continuously supplied high-pressure gas pressure and prevents pressure wave impacts from damaging the air supply pipes or the entire pneumatic cleaning device during frequent switching.

[0028] Both valve body 3 and valve cover 1 are manufactured by casting and precision machining. The outer edge of diaphragm 2 is sealed and pressed between them by bolts. The inlet cavity 31 and outlet cavity 32 of valve body 3 are connected to the air supply pipe. High pressure gas delivered from the upstream section of the air supply pipe enters from the inlet cavity 31, passes through the fitting gap between the conical valve port 34 and the valve core 7, enters the outlet cavity 32, and re-enters the downstream section of the air supply pipe.

[0029] Since the pressure stabilizing chamber 33 is connected to the outlet chamber 32, it can reflect the air pressure state of the outlet chamber 32. The pressure difference on both sides of the diaphragm 2 and the force of the pressure regulating spring 41 are respectively applied to both sides of the diaphragm 2 to adjust the position and orientation of the diaphragm 2. The position and orientation of the diaphragm 2 can act on the valve stem 71 through the pad 6, and under the combined action of the force applied by the support spring 72, the position of the valve core 7 and the gap between the valve core 7 and the conical valve port 34 are adjusted, thereby realizing the dynamic balance of the valve core 7, so that the air pressure at the input and output chamber 32 is maintained within a constant range and continuously conveyed to the hopper.

[0030] It should be further explained that since the valve cover 1 is not necessarily designed to be sealed, the space above the diaphragm 2 is connected to the external environment and is at standard air pressure. The pressure difference between the space above the diaphragm 2 and the air pressure at the outlet end below the diaphragm 2 generates an upward force on the diaphragm 2. Under the downward force exerted on the diaphragm 2 by the pressure regulating spring 41, the diaphragm 2 is in a dynamic platform. The valve stem 71 and the valve core 7 cooperate with the pad 6 provided on the diaphragm 2 under the action of the support spring 72 (the support spring 72 also exerts an upward force on the diaphragm 2), realizing the dynamic balance of the fit clearance between the valve core 7 and the conical valve port 34, thereby ensuring that the high-pressure gas is output at a stable pressure level.

[0031] When the high-pressure gas in the gas supply pipe is frequently switched on and off, the pressure fluctuates due to the sudden change in momentum of the airflow at the moment of switching on and off. Since the pressure regulating chamber is connected to the cylinder 4 through the pad 6, the pressure fluctuation, after acting on the pressure regulating chamber, will act on the buffer piston 5 in the cylinder 4 through the connection effect of the pad 6. The buffer piston 5 slides up and down in the cylinder 4 under the combined action of the resistance spring 51 and the fluctuating pressure to eliminate the instantaneous pressure fluctuation and avoid damage to the gas supply pipe and other equipment.

[0032] Specifically, when the pressure in the outlet chamber 32 increases instantaneously due to the adjustment of the air supply pipe, high-pressure gas enters the cylinder 4 and pushes the buffer piston 5 upward against the resistance of the resistance spring 51, thereby eliminating the positive pressure wave impact. Conversely, when the pressure in the outlet chamber 32 decreases instantaneously, the force provided by the resistance spring 51 is greater than the air pressure, pushing the buffer piston 5 downward, thereby eliminating the reverse pressure wave impact. After the air pressure stabilizes, the buffer piston 5, under the action of the resistance spring 51 and the air pressure, is also in a dynamic platform posture.

[0033] When using a high-pressure pneumatic cleaning device to effectively clean the inner walls of silos and hoppers, the following technical solution is provided to ensure that the inlet chamber 31 and outlet chamber 32 of the valve shell 3 can be effectively connected to the air supply pipe and to achieve effective communication between the outlet chamber 32 and the pressure stabilizing chamber 33.

[0034] The inlet cavity 31 and the outlet cavity 32 are respectively connected to the air inlet interface 35 and the air outlet interface 36. The air inlet interface 35 and the air outlet interface 36 are respectively arranged on both sides of the valve body 3. The outlet cavity 32 and the pressure stabilizing chamber 33 are connected through the connecting port 37 opened on the valve body 3. The connecting port 37 is distributed in a ring array.

[0035] The design of the air inlet 35 and the air outlet 36 can ensure the effective connection between the valve body 3 and the upstream and downstream air supply pipes. The communication ports 37 provided on the valve body 3 are evenly distributed in a ring array, which can ensure that the air pressure in the pressure regulating chamber can always reflect the air pressure in the oral cavity 32, thereby ensuring that a stable force is applied to the diaphragm 2.

[0036] To ensure that the valve stem 71 can always be under the action of the diaphragm 2 and the pad 6, and cooperate with the support spring 72 to drive the valve core 7 to run stably along the axial direction, and cooperate with the conical valve port 34 to realize automatic regulation of air pressure, the following technical solution is provided.

[0037] The pressure stabilizing chamber 33 has an assembly groove 38 at its axial center. The valve stem 71 slides through the assembly groove 38. A positioning ring 73 is fixed to the top of the valve stem 71. A support spring 72 is arranged around the valve stem 71 and its two ends are in contact with the positioning ring 73 and the assembly groove 38, respectively. The valve core 7 is set as a tapered structure that is narrow at the top and wide at the bottom and is nested with the tapered valve port 34.

[0038] A sealing sleeve 39 is nested at the axis of the assembly groove 38 to ensure the sealing effect at the sliding combination position of the valve stem 71 and the assembly groove 38, and to prevent high pressure gas from directly entering the pressure regulating chamber at this point and causing fluctuations in the gas pressure at various points in the pressure regulating chamber, thereby affecting the pressure stabilization effect.

[0039] The valve core 7 is also designed as a conical structure that is narrow at the top and wide at the bottom, which enables the valve core 7 to be nested with the conical valve port 34, allowing for more precise adjustment of the air pressure on one side of the oral cavity 32.

[0040] To ensure that the pad 6 can connect the pressure regulating chamber with the inner cavity of the cylinder 4, the following technical solution is provided.

[0041] The top of the pad 6 has an axial through hole 61, and the side wall of the pad 6 has multiple sets of radial through holes 62 arranged in a ring array. The radial through holes 62 are arranged below the diaphragm 2 and are connected to the axial through hole 61.

[0042] The axial through hole 61 and the radial through hole 62 ensure the communication between the pressure regulating chamber and the inner cavity of the cylinder 4. The diameters of the axial through hole 61 and the radial through hole 62 are smaller than the diameter of the connecting port 37, which can act as a throttle valve so that the speed of the gas entering and exiting the cylinder 4 has a delay effect relative to the pressure regulating chamber. This allows the cylinder 4, the buffer piston 5, and the resistance spring 51 to buffer the impact of pressure waves.

[0043] To achieve active regulation of the output pressure and ensure the pressure range for stable transmission of high-pressure gas, the following technical solution is provided.

[0044] A gasket 42 is provided on the bottom outer edge of the cylinder 4, and a pressure regulating cover 11 is screwed onto the top of the valve cover 1. A pressure regulating spring 41 is arranged around the cylinder 4, and the two ends of the pressure regulating spring 41 are respectively in contact with the gasket 42 and the pressure regulating cover 11.

[0045] The bottom port of cylinder 4 is machined with an outward-curving gasket 42. The gasket 42 ensures a tight seal with diaphragm 2 and also ensures effective contact between the bottom end of pressure regulating spring 41 and cylinder 4. By rotating the pressure regulating cover 11 in both directions, the pressure regulating spring 41 can be adjusted to tighten or loosen, thereby regulating the force applied to diaphragm 2. When pressure regulating spring 41 is tightened, the pressure regulating chamber requires greater air pressure to achieve the dynamic platform of diaphragm 2, thus increasing the stability of the output air pressure.

[0046] To facilitate the adjustment of the tension of the resistance spring 51, thereby adjusting the jumping amplitude of the buffer piston 5 under the impact of pressure waves, the following technical solution is provided.

[0047] A rotating seat 12 is rotatably mounted at the center of the pressure regulating cover 11. A splined shaft 13 is fixedly connected to the center of the rotating seat 12. An adjusting sleeve 43 is screwed to the center of the top of the cylinder 4. The top of the adjusting sleeve 43 is slidably inserted into the splined shaft 13. A pressure ring 44 is provided around the bottom of the adjusting sleeve 43. A guide sleeve 52 is fixedly connected to the center of the top of the buffer piston 5 and inserted into the adjusting sleeve 43. A resistance spring 51 is arranged around the guide sleeve 52 and its two ends are respectively in contact with the pressure ring 44 and the buffer piston 5.

[0048] When the pressure regulating cover 11 is rotated and lowered, the rotating seat 12 and the splined shaft 13 move up and down together with the pressure regulating cover 11. Since the pressure regulating cover 11 and the rotating seat 12 are rotatably connected, the position and orientation of the pressure regulating cover 11 will not be interfered with when the rotating seat 12 and the splined shaft 13 are rotated. A hexagonal countersunk groove is provided at the top axis of the rotating seat 12 to facilitate the rotation of the rotating seat 12 with a hexagonal wrench.

[0049] Since the spline shaft 13 and the adjusting sleeve 43 are slidably connected, the lifting and lowering movements of the spline shaft 13 and the adjusting sleeve 43 will not interfere with each other. When the spline shaft 13 rotates, it can drive the adjusting sleeve 43 and the pressure ring 44 on it to adjust their lifting and lowering posture, thereby controlling the tension of the resistance spring 51.

[0050] The guide sleeve 52 is inserted into the adjusting sleeve 43 in a relatively sliding and rotating manner, which can ensure that the buffer piston 5 moves stably along the axis under the guiding action. The adjusting sleeve 43 is designed as a hollow structure, which can avoid spatial and motion interference between it and the spline shaft 13 that extends into the adjusting sleeve 43.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] 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. A pressure stabilizing mechanism of a high-pressure pneumatic clearing device, characterized by: The valve includes a valve cover (1), a diaphragm (2), and a valve housing (3) arranged from top to bottom. The valve housing (3) has an inlet cavity (31), an outlet cavity (32), and a pressure stabilizing cavity (33) arranged from bottom to top. A tapered valve port (34) that is narrow at the top and wide at the bottom is provided between the inlet cavity (31) and the outlet cavity (32). The outlet cavity (32) and the pressure stabilizing cavity (33) are kept in communication. The diaphragm (2) is sealed and pressed between the valve cover (1) and the valve housing (3). It also includes a cylinder (4), a buffer piston (5), a seat (6), and a valve core (7). The cylinder (4) is assembled into the valve cover (1) and is sealed against the upper surface of the diaphragm (2) by a pressure regulating spring (41). The buffer piston (5) is slidably assembled into the cylinder (4) and is connected with a resistance spring (51). The seat (6) is assembled to the axis of the diaphragm (2) and is used to realize that the pressure stabilizing chamber (33) and the cylinder (4) are in a communication state. The valve core (7) is arranged in the inlet chamber (31) and cooperates with the conical valve port (34) to regulate the air pressure. The valve core (7) is fixed to the top axis of the valve core (7) and is slidably installed in the valve housing (3). The valve core (71) is held against the seat (6) by the action of a support spring (72).

2. The air pressure stabilizing mechanism of the high-pressure pneumatic clearing device according to claim 1, characterized in that: The inlet cavity (31) and outlet cavity (32) are respectively connected to an air inlet port (35) and an air outlet port (36). The air inlet port (35) and the air outlet port (36) are respectively arranged on both sides of the valve housing (3). The outlet cavity (32) and the pressure stabilizing chamber (33) are connected through a communication port (37) opened on the valve housing (3). The communication port (37) is arranged in a ring array.

3. The air pressure stabilizing mechanism of the high-pressure pneumatic clearing device according to claim 1, characterized in that: The pressure stabilizing chamber (33) has an assembly groove (38) at its axial center. The valve stem (71) slides through the assembly groove (38) in a relatively sliding manner. A positioning ring (73) is fixed to the top of the valve stem (71). The support spring (72) is arranged around the valve stem (71) and its two ends are respectively in contact with the positioning ring (73) and the assembly groove (38). The valve core (7) is set as a tapered structure that is narrow at the top and wide at the bottom and is nested with the tapered valve port (34).

4. The air pressure stabilizing mechanism of the high-pressure pneumatic clearing device according to claim 1, characterized in that: The top of the pad (6) has an axial through hole (61), and the side wall of the pad (6) has multiple radial through holes (62) arranged in a ring array. The radial through holes (62) are arranged below the diaphragm (2) and are connected to the axial through hole (61).

5. The air pressure stabilizing mechanism of a high-pressure pneumatic clearing device according to claim 1, characterized in that: A gasket (42) is provided on the bottom outer edge of the cylinder (4), and a pressure regulating cover (11) is screwed onto the top of the valve cover (1). The pressure regulating spring (41) is arranged around the cylinder (4), and the two ends of the pressure regulating spring (41) are respectively in contact with the gasket (42) and the pressure regulating cover (11).

6. The air pressure stabilizing mechanism of a high-pressure pneumatic clearing device according to claim 5, characterized in that: A rotating seat (12) is rotatably mounted at the center of the pressure regulating cover (11). A spline shaft (13) is fixedly connected at the center of the rotating seat (12). An adjusting sleeve (43) is screwed onto the center of the top of the cylinder (4). The top of the adjusting sleeve (43) is slidably inserted into the spline shaft (13). A pressure ring (44) is provided around the bottom of the adjusting sleeve (43). A guide sleeve (52) is fixedly connected to the center of the top of the buffer piston (5) and inserted into the adjusting sleeve (43). The resistance spring (51) is arranged around the guide sleeve (52) and its two ends are respectively in contact with the pressure ring (44) and the buffer piston (5).

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