Gas circuit detection device and detection method of rotating disc type automatic sand blasting machine

Abstract

The invention relates to the technical field of gas path detection, in particular to a gas path detection device and detection method of a rotating disc type automatic sand blasting machine, which comprises a test box and a bracket arranged in the test box and used for supporting a water path, and also comprises a position adjusting and fixing system comprising a moving table arranged in the test box, the clamp is arranged at the top of the moving table and is used for clamping a waterway; the high-temperature simulation system comprises an exhaust pipe arranged in the test box, a heating pipe is spirally arranged in the moving table, and a temperature rising assembly for dissipating heat generated by the heating pipe is arranged in the clamp; the dynamic vibration system comprises a movable plate arranged on one side of the clamp, a shaking hammer is arranged on one side of the movable plate, a driving assembly for driving the shaking hammer to shake up and down is arranged in the movable plate, and a swing assembly running together with the temperature rising assembly is arranged in the clamp; the swing assembly is used for driving the movable plate to swing so as to hammer the water path.

Description

Technical Field

[0001] This invention relates to the field of air path testing technology, specifically to an air path testing device and testing method for a rotary automatic sandblasting machine. Background Technology

[0002] Rotary automatic sandblasting machines, as core equipment in modern industrial surface treatment, use compressed air to drive abrasive particles into a high-speed jet, achieving cleaning, strengthening, and finishing of workpiece surfaces. Their working principle is based on the negative pressure generated by the high-speed flow of compressed air within the spray gun, drawing abrasive particles (such as brown fused alumina and silicon carbide) from the storage tank into the gun. After being accelerated by the nozzle, the abrasive impacts the workpiece surface, completing processes such as deburring, removing oxide scale, and improving coating adhesion. This equipment is widely used in industries such as automotive parts, aerospace, electronic components, and hardware products, and is particularly suitable for batch processing of round, cylindrical, and complex curved workpieces.

[0003] The air system is the power source of a rotary automatic sandblasting machine, and its stability directly affects the processing quality and equipment lifespan. A typical air system structure includes an air compressor, air tank, pressure regulating valve, solenoid valve, spray guns, and connecting pipelines. A PLC control system enables precise control of air pressure, flow rate, and spraying timing. For example, the SL-ZP-1416T-40 model uses 12 spray guns operating in tandem. The spray pressure, oscillation frequency, and abrasive flow rate of each gun can be independently adjusted, requiring a continuous and stable supply of compressed air from the air system. Leaks or pressure fluctuations in the air system can lead to uneven sandblasting intensity, abrasive clogging of the nozzles, and even equipment malfunction.

[0004] For example, patent document CN223205066U relates to the field of gas path detection technology and discloses a gas path detection device for a rotary automatic sandblasting machine with a sensor inlet pressure head. The device includes a base, a mounting plate fixedly installed on the top outer wall of the base, a water tank fixedly installed on one side of the mounting plate, a top plate bolted to the top of the water tank, a first mounting hole with a water inlet pipe fixedly installed on the inner wall of the first mounting hole, and a gas path pipe inside the water tank. In this patent document, when gas flows in the gas path pipe, the situation inside the water tank can be easily observed through a glass window. If air bubbles appear in the water in the tank, it indicates a leak in the gas path pipe; if no air bubbles appear, the gas path pipe is properly sealed, thus achieving the detection effect of the gas path pipe. During the gas path pipe sealing test, the pressure in the gas path pipe is controlled by an air gun, making it practical and suitable for widespread promotion and use.

[0005] In the actual operating environment of a rotary automatic sandblasting machine, the air system not only endures continuous compressed air pressure but also faces the combined effects of mechanical vibration and temperature changes. The periodic vibrations generated during equipment operation cause microscopic displacements in critical components such as pipe joints and seals, while the heat generated by friction during sandblasting significantly raises the system temperature, further exacerbating the elastic changes in the sealing material. Intermittent leaks formed under these dynamic conditions are insidious and time-varying, often only manifesting at specific vibration frequencies or temperature thresholds. Traditional static water immersion testing methods, conducted in an ideal environment of constant temperature and no vibration, cannot replicate the complex stress conditions of actual equipment operation. Therefore, even if the air system components perform well in water testing, unpredictable leaks may still occur after actual operation. This fundamental difference between this testing method and actual operating conditions means that many potential sealing failures cannot be detected in time during equipment commissioning, ultimately leading to sudden malfunctions during production, fluctuations in sandblasting quality, and unnecessary increases in maintenance costs.

[0006] Therefore, this application proposes an air circuit detection device and detection method for a rotary automatic sandblasting machine. Summary of the Invention

[0007] The purpose of this invention is to provide an air path detection device and detection method for a rotary automatic sandblasting machine, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an air path detection device for a rotary automatic sandblasting machine, comprising a test chamber and a bracket placed inside it for supporting the water path, and further comprising: The positioning and fixing system includes a shifting platform installed inside the test chamber and a clamp installed on the top of the shifting platform for holding the water passage. A high-temperature simulation system includes an exhaust pipe installed inside a test chamber, a heating tube spirally installed inside a moving stage, and a heating component installed inside the fixture to dissipate the heat generated by the heating tube. A dynamic vibration system includes a movable plate disposed on one side of a clamp, a shaking hammer disposed on one side of the movable plate, a drive assembly disposed inside the movable plate to drive the shaking hammer to shake up and down, and an oscillating assembly disposed inside the clamp in conjunction with a heating assembly. The oscillating assembly is used to drive the movable plate to oscillate and hammer the water passage.

[0009] Preferably, the heating component includes a fan blade disposed inside the clamp, the top of the clamp is connected to a gas sleeve that is connected to an exhaust pipe, the clamp is connected to a moving platform to allow gas to flow into the gas sleeve, a support frame for supporting the fan blade is fixedly connected inside the clamp, and a drive motor for driving the fan blade to rotate is disposed inside the clamp.

[0010] Preferably, the exhaust pipe is connected to the outer surface of the bracket, and a drain groove is provided on one side of the exhaust pipe.

[0011] Preferably, the drive assembly includes a telescopic airbag fixedly connected inside the movable plate, a connecting rod fixedly connected to the telescopic end of the telescopic airbag, the connecting rod being fixedly connected to the shaking hammer, and a spring for supporting the shaking hammer being provided on one side of the movable plate.

[0012] Preferably, the swing assembly includes a driven cavity opened inside the clamp, a piston push rod that can abut against a movable plate is slidably connected inside the driven cavity, an active cavity is opened inside the movable plate, an active piston rod is slidably connected inside the active cavity, and an extrusion blade that can abut against the active piston rod is fixedly connected to the outer surface of the output end of the drive motor, and the active cavity and the driven cavity are connected by an air chamber.

[0013] Preferably, the movable plate has an exhaust chamber inside, the exhaust chamber is connected to the telescopic airbag through a hose, and the air chamber is connected to the exhaust chamber through an air passage.

[0014] Preferably, the clamp is fixedly connected to torsion spring rods that are rotatably connected to the movable plate on both sides.

[0015] Preferably, a workbench is fixedly connected inside the test chamber, and a guide rail for driving the moving platform is fixedly connected to the top of the workbench.

[0016] Preferably, a thermometer is fixedly connected to the top of the test chamber, an observation window is provided on one side of the test chamber, and a pressure detector for detecting the internal air pressure is fixedly connected to one end of the water channel.

[0017] This invention also provides a method for detecting the air path of a rotary automatic sandblasting machine, comprising the following steps: S1. In use, the water passage is passed through the two brackets, and the two clamps are positioned on the surface of the water passage. Then, air is pumped into the water passage to make it expand. S2. Then, a high-temperature environment is created inside the test chamber by turning on the heating tube and the heating component. Under the high-temperature environment, the air pressure in the water circuit is detected by the air pressure detector. S3. Simultaneously, the swing component is operated to drive the movable plate hammer to strike the water channel surface, thereby generating vibration to achieve dynamic sealing detection.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. The sealed environment created by the test chamber, combined with the observation window, allows operators to directly monitor the entire testing process without interrupting the test. The precision moving platform, consisting of the worktable and guide rails, enables smooth movement along the length of the air path, ensuring uniform heating and effectively simulating the dynamic heat distribution during actual equipment operation. The synergistic effect of the brackets and clamps not only provides stable support for the air path but also adapts to pipes of different diameters and shapes, significantly improving the device's versatility. The high-temperature simulation system generates controllable heat through heating tubes, which, in conjunction with a drive motor, rotates the fan blades. This allows the hot airflow to be efficiently introduced into the exhaust pipe through the air casing, and then evenly distributed on the air path surface through carefully designed drainage channels, accurately replicating the high-temperature environment of the sandblasting machine. The support frame ensures stable operation of the fan blades at high temperatures, while a thermometer monitors temperature changes within the chamber in real time, providing accurate environmental parameters for the test. A pressure detector continuously monitors internal pressure changes in the air path under stable high-temperature conditions, effectively identifying intermittent thermal leaks that traditional static water testing cannot detect. The entire system overcomes the fundamental shortcomings of the water immersion method in high-temperature testing, avoiding interference from hot water steam and temperature misjudgments.

[0019] 2. Through the synergistic effect of a highly integrated dynamic vibration system and a high-temperature simulation system, comprehensive and precise testing of the air circuit sealing performance of a rotary automatic sandblasting machine is achieved. The test chamber, along with the observation window, provides a safe and visible testing environment. The precision moving platform, consisting of the worktable and guide rails, allows for accurate positioning of the stage, ensuring uniform stress on the air circuit during testing. The combination of the bracket and clamps not only provides stable support for the air circuit but also provides an ideal mechanical basis for vibration testing. The high-temperature simulation system, through the heat generated by the heating tubes and dispersed by the fan blades, combined with the airflow channels of the casing and exhaust pipe, and further evenly distributed through the venting grooves, perfectly replicates the thermal environment during equipment operation. The innovatively designed dynamic vibration system utilizes a clever pneumatic linkage mechanism. A single power source, the drive motor, simultaneously drives the fan blades to rotate and compress the blades, causing the active piston rod to reciprocate within the active chamber. Gas is transmitted through the air chamber, pushing the piston push rod to move within the driven chamber, driving the movable plate to oscillate around the torsion spring rod, applying controllable low-frequency impacts to the air path. Simultaneously, diverted gas enters the exhaust chamber through the air passage, driving the expansion and contraction of the telescopic airbag via a hose. This, in turn, drives the connecting rod, causing the vibrating hammer to generate high-frequency micro-amplitude vibrations under the elastic action of the spring. This composite vibration mode of low-frequency large amplitude and high-frequency micro-amplitude vibrations, combined with a high-temperature environment, can effectively excite and detect intermittent leaks caused by the coupling of heat and vibration, which are completely undetectable by traditional static water testing. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the workbench of the present invention; Figure 4 This is a schematic cross-sectional view of the workbench in this invention; Figure 5 This is a schematic cross-sectional view of the moving stage in this invention; Figure 6 This is a cross-sectional structural diagram of the clamp in this invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A; Figure 8 This is a schematic cross-sectional view of the air cavity in this invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the movable plate in this invention; Figure 11 This is a schematic diagram of the gas-insulated shell structure in this invention; Figure 12 For the present invention Figure 11 Enlarged schematic diagram of the structure at point C.

[0021] In the diagram: 100, Test box; 101, Observation window; 102, Workbench; 103, Water channel; 104, Air pressure detector; 105, Bracket; 200, Moving platform; 201, Fixture; 202, Guide rail; 300, Exhaust pipe; 301, Drainage channel; 302, Heating tube; 303, Drive motor; 304, Support frame; 305, Fan blade; 306, Air casing; 307, Thermometer; 400, Movable plate; 401, Torsion spring rod; 402, Extrusion blade; 403, Active piston rod; 404, Active chamber; 405, Spring; 406, Air chamber; 407, Driven chamber; 408, Piston push rod; 409, Air passage; 410, Exhaust chamber; 411, Hose; 412, Telescopic airbag; 413, Connecting rod; 414, Vibrating hammer; 415, Spring. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1 - Figure 12This invention provides a technical solution: an air path testing device for a rotary automatic sandblasting machine, including a test chamber 100 and a bracket 105 placed inside it to support the water path 103. The test chamber 100 adopts a double-layer heat insulation structure design, with the inner layer made of 304 stainless steel and the outer layer made of carbon steel with powder coating, and high-density aluminum silicate insulation cotton filled in between, effectively reducing heat loss and ensuring external operation safety. It also includes: The positioning and fixing system includes a shift stage 200 disposed inside the test chamber 100, and a clamp 201 disposed on the top of the shift stage 200 for clamping the water passage 103. A workbench 102 is fixedly connected inside the test chamber 100, and a guide rail 202 for driving the shift stage 200 to move is fixedly connected to the top of the workbench 102. The shift stage 200 can move precisely in the horizontal direction by cooperating with the guide rail 202 through a slider, ensuring that the air passage 103 is heated evenly during the test. The clamp 201 adopts a V-shaped structure design and is lined with a high-temperature resistant silicone pad, which not only ensures stable clamping but also prevents damage to the surface of the air passage 103 under high temperature.

[0024] The high temperature simulation system includes an exhaust pipe 300 installed inside the test chamber 100, a heating pipe 302 is spirally installed inside the moving stage 200, and a heating component for dissipating the heat generated by the heating pipe 302 is installed inside the clamp 201. Furthermore, the heating component includes a fan blade 305 disposed inside the clamp 201. The top of the clamp 201 is connected to a gas sleeve 306 that is connected to the exhaust pipe 300. The clamp 201 is connected to the moving platform 200 so that gas can flow into the gas sleeve 306. A support frame 304 for supporting the fan blade 305 is fixedly connected inside the clamp 201. A drive motor 303 for driving the fan blade 305 to rotate is disposed inside the clamp 201.

[0025] Furthermore, the exhaust pipe 300 is connected to the outer surface of the bracket 105, and a vent 301 is provided on one side of the exhaust pipe 300. A thermometer 307 is fixedly connected to the top of the test chamber 100, and an observation window 101 is provided on one side of the test chamber 100. A pressure detector 104 for detecting the internal air pressure is fixedly connected to one end of the water channel 103. The pressure detector 104 has a detection range of 0-1.6MPa and an accuracy of 0.25%FS. It can monitor air pressure changes in real time and record the leakage rate.

[0026] Specifically, the air passage 103 to be tested is first passed through the V-shaped support grooves of the two brackets 105, and then the two adaptive clamps 201 are precisely positioned on the surface of the key test section of the air passage 103. Next, dry compressed air is injected into the air passage 103, with the pressure adjusted to 1.2 times the working pressure, typically 0.8-1.0 MPa, to allow it to fully expand and make tight contact with the clamps 201. The temperature inside the test chamber 100 is monitored in real time by a thermometer 307. The heating element 302 is activated to generate controllable heat, and simultaneously, the drive motor 303 is turned on to drive the fan blades 305 to rotate at high speed, forming a directional airflow that efficiently transports the heat released by the heating element 302 through the air casing 306 to the interior of the exhaust pipe 300. The hot airflow is then evenly discharged through a precisely designed vent 301, creating a high-temperature environment surrounding the surface of the air passage 103.

[0027] After the target temperature, such as 80°C, is stably reached and maintained for 30 minutes, the air pressure within the air passage 103 is continuously monitored by a high-precision air pressure detector 104, recording the pressure change curve per unit time. The system is equipped with an intelligent analysis module that can distinguish between normal pressure changes caused by temperature fluctuations and abnormal pressure drops caused by actual leaks. Simultaneously, the operation control system can drive the guide rail 202 to slowly move the stage 200 along the length of the air passage, making the heating of each section of the air passage 103 more uniform. This effectively simulates the temperature distribution changes caused by rotation during actual operation of a rotary automatic sandblasting machine, thus more accurately detecting potential leak points under combined vibration and high-temperature conditions. After the test is completed, the system automatically starts a cooling program, rapidly cooling the air through reverse airflow, while simultaneously recording changes in sealing performance during the cooling process, providing complete data support for the reliability assessment of the air passage 103.

[0028] In summary, the sealed environment created by the test chamber 100, combined with the observation window 101, allows operators to directly monitor the entire testing process without interrupting the test. The precision moving platform formed by the workbench 102 and guide rail 202 enables the stage 200 to move smoothly along the length of the air passage 103, ensuring uniform heating and effectively simulating the dynamic heat distribution during actual equipment operation. The synergistic effect of the bracket 105 and clamp 201 not only provides stable support for the air passage 103 but also adapts to pipes of different diameters and shapes, significantly improving the device's versatility. The high-temperature simulation system generates controllable heat through the heating pipe 302, which, in conjunction with the drive motor 303, rotates the fan blades 305. This allows the hot airflow to be efficiently introduced into the exhaust pipe 300 through the air casing 306, and then evenly distributed on the surface of the air passage 103 through the carefully designed drainage grooves 301, accurately replicating the high-temperature environment during sandblasting machine operation. The support frame 304 ensures stable operation of the fan blades 305 at high temperatures, while the thermometer 307 monitors the temperature changes inside the chamber in real time, providing accurate environmental parameters for the test. The air pressure detector 104 continuously monitors the internal pressure changes of the air path 103 under stable high-temperature conditions, effectively identifying heat-induced intermittent leaks that cannot be detected by traditional static water testing. The entire system overcomes the fundamental shortcomings of the water immersion method in high-temperature testing, avoiding interference from hot water steam and temperature misjudgment.

[0029] Example 2: Please refer to Figure 1 - Figure 12 The present invention also provides a technical solution, which differs from the technical solution of Embodiment 1 as follows: an air path detection device for a rotary automatic sandblasting machine. It also includes a dynamic vibration system, including a movable plate 400 disposed on one side of the clamp 201, a shaking hammer 414 disposed on one side of the movable plate 400, a drive assembly for driving the shaking hammer 414 to shake up and down disposed inside the movable plate 400, and an oscillating assembly disposed inside the clamp 201 that operates together with the heating assembly. The oscillating assembly drives the movable plate 400 to oscillate regularly by pneumatic means, thereby realizing intermittent hammering of the surface of the air passage 103, perfectly replicating the vibration stress state during equipment operation.

[0030] Furthermore, the drive assembly includes a telescopic airbag 412 fixedly connected inside the movable plate 400. A connecting rod 413 is fixedly connected to the telescopic end of the airbag 412, and the connecting rod 413 is fixedly connected to the shaking hammer 414. A spring 415, made of high-elasticity beryllium copper alloy, is provided on one side of the movable plate 400 to support the shaking hammer 414. One end of the spring 415 is fixed to the movable plate 400, and the other end supports the bottom of the shaking hammer 414, providing both support and shock absorption, thus extending the system's service life. By adjusting the air pressure inside the telescopic airbag 412, the impact amplitude and frequency of the shaking hammer 414 can be precisely controlled to adapt to the testing requirements of different specifications of the air circuit 103. The swing assembly includes a driven cavity 407 located inside the clamp 201. A piston rod 408, capable of abutting against a movable plate 400, is slidably connected inside the driven cavity 407. An active cavity 404 is located inside the movable plate 400, and an active piston rod 403 is slidably connected inside the active cavity 404. A pressing blade 402, capable of abutting against the active piston rod 403, is fixedly connected to the outer surface of the output end of the drive motor 303. The active cavity 404 and the driven cavity 407 are connected via an air chamber 406. When the drive motor 303 operates, the fan blade 305 and the pressing blade 402 rotate synchronously. The pressing blade 402 periodically presses the active piston rod 403, causing it to move into the active cavity 404. The active cavity 404 and the driven cavity 407 are connected via the precision-machined air chamber 406, forming a complete pneumatic circuit to ensure efficient gas transmission and fast response. A spring 405 is also provided to provide power for the reset of the active piston rod 403.

[0031] Furthermore, the movable plate 400 has an exhaust chamber 410 inside, which is connected to the telescopic airbag 412 via a hose 411, and the air chamber 406 is connected to the exhaust chamber 410 via an air passage 409.

[0032] Among them, the clamp 201 is fixedly connected to both sides with torsion spring rods 401 that are rotatably connected to the movable plate 400. The clamp 201 is fixedly connected to both sides with high-precision torsion spring rods 401. The torsion spring rods 401 are made of stainless steel and the surface has undergone special heat treatment, which not only ensures the flexible rotation of the movable plate 400, but also provides precise reset torque to ensure the consistency and repeatability of the hammering action.

[0033] Specifically, during system operation, when the fan blade 305 rotates with the drive motor 303, the coaxially mounted extrusion blade 402 rotates synchronously, periodically extruding the curved end of the active piston rod 403, forcing the piston end of the active piston rod 403 to move into the active chamber 404. During this process, the compressed gas in the active chamber 404 quickly flows into the driven chamber 407 through the air chamber 406, pushing the piston end of the piston push rod 408 outward. The extended end of the piston push rod 408 precisely abuts against a specific position at the bottom of the movable plate 400, causing the movable plate 400 to slowly rotate and store force around the torsion spring rod 401; when the extrusion blade 402 rotates to the release position, the active piston rod 403 quickly resets under the action of the return spring, and at the same time, the gas in the driven chamber 407 flows back, the piston push rod 408 retracts accordingly, and the movable plate 400 rapidly resets under the elastic action of the torsion spring rod 401, with its top generating a momentary impact on the surface of the air passage 103, forming a low-frequency vibration simulating the operation of the equipment.

[0034] Meanwhile, as the gas in the active chamber 404 flows to the driven chamber 407, part of the airflow is diverted through the precisely designed air passage 409 into the exhaust chamber 410, and then guided into the telescopic airbag 412 via the hose 411. The air pressure inside the telescopic airbag 412 increases, causing it to expand and elongate. This raises the position of the vibrating hammer 414 via the connecting rod 413, causing the spring 415 to undergo elastic deformation and store energy. When the main airflow decreases or reverses, the gas inside the telescopic airbag 412 flows back, the air pressure decreases, and the vibrating hammer 414 resets at high speed under the elastic restoring force of the spring 415, violently impacting the surface of the air passage 103, forming a high-frequency micro-vibration. This composite excitation method, generated by the low-frequency large-amplitude vibration of the moving plate 400 and the high-frequency micro-amplitude vibration of the vibrating hammer 414, perfectly simulates the complex vibration environment experienced by the rotary automatic sandblasting machine in actual operation, and can effectively excite and detect intermittent leaks that cannot be detected by static testing.

[0035] By driving the movable stage 200 along the axial direction of the air passage 103 via the operating guide rail 202, the impact points of the movable plate 400 and the vibrating hammer 414 can cover different sections of the air passage 103, achieving full-length dynamic sealing performance testing. This all-round vibration testing mode, combined with the thermal environment created by the high-temperature simulation system, constructs composite stress testing conditions close to real working conditions, significantly improving the accuracy and reliability of the air passage 103 sealing performance testing, and providing strong technical support for the long-term stable operation of the rotary automatic sandblasting machine.

[0036] In summary, through the synergistic effect of the highly integrated dynamic vibration system and the high-temperature simulation system, comprehensive and accurate testing of the air circuit sealing performance of the rotary automatic sandblasting machine is achieved. The test chamber 100, together with the observation window 101, provides a safe and visible testing environment. The precision moving platform formed by the worktable 102 and the guide rail 202 enables the stage 200 to be precisely positioned, ensuring uniform stress on the air circuit 103 during testing. The cooperation between the bracket 105 and the clamp 201 not only provides stable support for the air circuit 103 but also provides an ideal mechanical basis for vibration testing. The high-temperature simulation system, through the heat generated by the heating pipe 302, is dispersed by the fan blades 305. Combined with the airflow channels of the air casing 306 and the exhaust pipe 300, and further evenly distributed through the venting groove 301, it perfectly replicates the thermal environment during equipment operation. The innovatively designed dynamic vibration system utilizes a clever pneumatic linkage mechanism, employing a single power source—the drive motor 303—to simultaneously drive the fan blade 305 to rotate and compress the blade 402. This causes the active piston rod 403 to reciprocate within the active chamber 404. Gas is transmitted through the air chamber 406, pushing the piston push rod 408 to move within the driven chamber 407, driving the movable plate 400 to oscillate around the torsion spring rod 401, applying a controllable low-frequency impact to the air passage 103. Simultaneously, the diverted gas enters the exhaust chamber 410 through the air passage 409, driving the telescopic airbag 412 to expand and contract via the hose 411. This, in turn, causes the connecting rod 413 to generate high-frequency micro-amplitude vibrations in the vibrating hammer 414 under the elastic action of the spring 415. This composite vibration mode of low-frequency large amplitude and high-frequency micro-amplitude, combined with a high-temperature environment, can effectively excite and detect intermittent leaks caused by the coupling of heat and vibration, which are completely undetectable by traditional static water testing.

[0037] Example 3: Please refer to Figure 1 - Figure 12 The present invention also provides a technical solution, which differs from the technical solution of Embodiment 1 as follows: a method for detecting the air path of a rotary automatic sandblasting machine, comprising the following steps: S1. In use, the water passage 103 is passed through the two brackets 105, and the two clamps 201 are positioned on the surface of the water passage 103. Then, air is pumped into the water passage 103 to make it expand. S2. Subsequently, the temperature inside the test chamber 100 is monitored by thermometer 307. Heat is generated by turning on the heating tube 302, and at the same time, the drive motor 303 is turned on to drive the fan blade 305 to rotate, thereby forming an airflow. The heat released by the heating tube 302 is discharged through the air shell 306 to the inside of the exhaust pipe 300. Then, the heat is discharged to the surface of the water channel 103 through the drain trough 301, thereby creating a high-temperature environment. Under the high-temperature environment, the air pressure inside the water channel 103 is detected by the air pressure detector 104. By continuously maintaining the same temperature environment, the air pressure detector 104 determines whether the air pressure inside the water channel 103 changes, thereby completing the sealing test of the water channel 103. S3. When the fan blade 305 rotates, it will drive the extrusion blade 402 to rotate along with it. The extrusion blade 402 will continuously extrude the active piston rod 403, causing its piston end to move into the active chamber 404. The gas in the active chamber 404 will flow into the driven chamber 407 through the gas chamber 406, thereby pushing the piston end of the piston push rod 408 to move, so that one end of the piston push rod 408 abuts against the bottom of the movable plate 400, causing it to flip and store force. When the active piston rod 403 resets, it will drive the piston push rod 408 to reset, allowing the movable plate 400 to reset quickly, thereby driving the top of the movable plate 400 to strike the surface of the water channel 103, thereby generating vibration to achieve dynamic sealing detection. S4. When the gas in the active chamber 404 flows into the driven chamber 407, some of the gas will flow into the exhaust chamber 410 through the air passage 409 and enter the telescopic airbag 412 through the hose 411, causing the gas in the telescopic airbag 412 to increase and expand, thereby raising the position of the shaking hammer 414 and stretching the spring 415. Then, when the gas in the telescopic airbag 412 flows back, it will quickly reset the shaking hammer 414 and contact the surface of the water passage 103, so that the water passage 103 is hit by the moving plate 400 and the shaking hammer 414 from both directions, thereby generating three-dimensional vibration.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic path testing device for a rotary automatic sandblasting machine, comprising a test chamber (100) and a bracket (105) placed inside it for supporting the water path (103), characterized in that, Also includes: The positioning and fixing system includes a shift stage (200) disposed inside the test chamber (100) and a clamp (201) disposed on the top of the shift stage (200) for clamping the water channel (103). The high temperature simulation system includes an exhaust pipe (300) installed inside the test chamber (100), and a heating pipe (302) is coiled inside the stage (200). The fixture (201) is equipped with a heating component for dissipating the heat generated by the heating pipe (302). The dynamic vibration system includes a movable plate (400) disposed on one side of a clamp (201), a shaking hammer (414) disposed on one side of the movable plate (400), a driving component for driving the shaking hammer (414) to shake up and down disposed inside the movable plate (400), and a swing component that operates together with the heating component disposed inside the clamp (201). The swing component is used to drive the movable plate (400) to swing and hammer the water channel (103).

2. The air path detection device for a rotary automatic sandblasting machine according to claim 1, characterized in that: The heating component includes a fan blade (305) disposed inside the clamp (201). The top of the clamp (201) is connected to a gas sleeve (306) that is connected to the exhaust pipe (300). The clamp (201) is connected to the moving platform (200) so that gas can flow into the gas sleeve (306). A support frame (304) for supporting the fan blade (305) is fixedly connected inside the clamp (201). A drive motor (303) for driving the fan blade (305) to rotate is disposed inside the clamp (201).

3. The air path detection device for a rotary automatic sandblasting machine according to claim 1, characterized in that: The exhaust pipe (300) is connected to the outer surface of the bracket (105), and a vent groove (301) is provided on one side of the exhaust pipe (300).

4. The air path detection device for a rotary automatic sandblasting machine according to claim 2, characterized in that: The drive assembly includes a telescopic airbag (412) fixedly connected inside the movable plate (400). A connecting rod (413) is fixedly connected to the telescopic end of the telescopic airbag (412). The connecting rod (413) is fixedly connected to the shaking hammer (414). A spring (415) for supporting the shaking hammer (414) is provided on one side of the movable plate (400).

5. The air path detection device for a rotary automatic sandblasting machine according to claim 4, characterized in that: The swing assembly includes a driven cavity (407) opened inside the clamp (201). A piston push rod (408) that can abut against the movable plate (400) is slidably connected inside the driven cavity (407). An active cavity (404) is opened inside the movable plate (400). An active piston rod (403) is slidably connected inside the active cavity (404). An extrusion blade (402) that can abut against the active piston rod (403) is fixedly connected to the outer surface of the output end of the drive motor (303). The active cavity (404) and the driven cavity (407) are connected by an air cavity (406).

6. The air path detection device for a rotary automatic sandblasting machine according to claim 5, characterized in that: The movable plate (400) has an exhaust chamber (410) inside. The exhaust chamber (410) is connected to the telescopic airbag (412) through a hose (411). The air chamber (406) is connected to the exhaust chamber (410) through an air passage (409).

7. The air path detection device for a rotary automatic sandblasting machine according to claim 5, characterized in that: The clamp (201) is fixedly connected to both sides with torsion spring rods (401) that are rotatably connected to the movable plate (400).

8. The air path detection device for a rotary automatic sandblasting machine according to claim 1, characterized in that: The test chamber (100) is fixedly connected to a workbench (102), and the top of the workbench (102) is fixedly connected to a guide rail (202) for driving the moving stage (200) to move.

9. The air path detection device for a rotary automatic sandblasting machine according to claim 1, characterized in that: A thermometer (307) is fixedly connected to the top of the test chamber (100), an observation window (101) is opened on one side of the test chamber (100), and a barometer (104) for detecting the internal air pressure is fixedly connected to one end of the water channel (103).

10. A method for detecting the air path of a rotary automatic sandblasting machine, and a device for detecting the air path of a rotary automatic sandblasting machine according to any one of claims 1-9, characterized in that, Includes the following steps: S1. In use, the water passage (103) is passed through two brackets (105), and the two clamps (201) are positioned on the surface of the water passage (103). Then, air is pumped into the water passage (103) to make it expand. S2. Then, a high-temperature environment is created inside the test chamber (100) by turning on the heating tube (302) and the heating component. Under the high-temperature environment, the air pressure in the water circuit (103) is detected by the air pressure detector (104). S3. Simultaneously, the swing assembly is operated to drive the movable plate (400) to hammer the surface of the water channel (103), thereby generating vibration to achieve dynamic sealing detection.

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