Aerosol can high pressure leak detector

Abstract

The application discloses a high-pressure leak detection machine for aerosol cans and relates to the technical field of aerosol cans.The high-pressure leak detection machine comprises a leak detection box, a placing groove is formed in the top of the leak detection box, a bubble sputtering mechanism and a bubble separation mechanism are arranged in the placing groove, the bubble sputtering mechanism is arranged, after the generation and floating of bubbles, the bubbles floating to the water surface will explode by themselves, a very small but very dense sputtering effect is generated, the sputtered bubbles will splash the colored water into the tissue in the upper placing ring, the distance between the tissue and the aerosol can is controlled within the bubble sputtering range, the quick judgment of whether the aerosol can body leaks can be completed by observing whether the white and translucent tissue is splashed with color from the outside, the judgment is simple and fast, one worker can manage the detection of multiple aerosol cans, the generation of bubbles does not need to be observed separately, the problems of detection failure and low efficiency are reduced.

Description

Technical Field

[0001] This invention relates to the field of aerosol can technology, specifically to a high-pressure leak detector for aerosol cans. Background Technology

[0002] In the industrial sector, aerosol cans contain high-pressure gas, thus requiring a high degree of sealing. To improve product quality and safety, it is essential to ensure that the aerosol cans are leak-free. Leak detection methods have evolved from traditional water testing to the current vacuum high-pressure testing.

[0003] The patent application with publication number CN206515003U describes a high-pressure leak detector for aerosol cans. Specifically, it is a high-pressure leak detector for aerosol cans that solves the problem of aerosol cans getting stuck between themselves and the leak detection assembly due to malfunctions, preventing them from being smoothly detached at the output end for conveying. This causes conveying failures during continuous leak detection operations while the turntable is rotating. The key technical point of the solution is that the high-pressure leak detector for aerosol cans includes a frame, a leak detection assembly and a conveyor line located on the frame for detecting the airtightness of the aerosol cans, a first detection device located at the output end of the conveyor line to detect whether the aerosol cans on the turntable are being conveyed normally, a first control device coupled to the first detection device, and an execution device that responds to the first control device and drives the leak detector to stop.

[0004] Currently, when aerosol cans are routinely immersed in water to detect leaks by using bubbles, the bubbles are often too small to be detected. In addition, some aerosol cans do not leak when they are first immersed in water, but leaks only appear after a period of time and shaking, which increases the difficulty of observation for staff and requires a longer time. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an aerosol can high-pressure leak detector, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a high-pressure leak detector for aerosol cans, including a leak detection box, wherein a placement groove is provided on the top of the leak detection box, and a bubble sputtering mechanism and a bubble separation mechanism are provided inside the placement groove;

[0007] The bubble sputtering mechanism includes:

[0008] A soft pad, the soft pad being a long strip-shaped structure, with an arc-shaped plate fixedly connected to the outer wall of the soft pad, a connecting rod fixedly connected to the outer wall of the arc-shaped plate, a connecting sleeve fixedly connected to one end of the connecting rod, and a threaded telescopic rod threadedly connected to the inner wall of the connecting sleeve, the bottom end of the threaded telescopic rod being fixedly connected to the bottom of the inner wall of the placement groove;

[0009] The circular plate is a circular disc-shaped structure. The inner wall of the circular plate is rotatably connected to the outer wall of the connecting sleeve. A telescopic rod is fixedly connected to the bottom of the circular plate. One end of the telescopic rod is fixedly connected to the bottom of the inner wall of the placement groove. The circular plate is used to hold water.

[0010] Preferably, the bubble separation mechanism includes an annular bar, the inner wall of which is fixedly connected to the outer wall of the arc-shaped plate, and a rotating plate is fixedly connected to the outer wall of the annular bar.

[0011] Preferably, the inner wall of the rotating plate has a separation hole, the rotating plate is an arc-shaped plate structure, the top of the circular plate is fixedly connected to a spring B, and the bottom of the circular plate is rotatably connected to a spring A through a bearing, with one end of spring A fixedly connected to the bottom of the inner wall of the placement groove.

[0012] Preferably, the top of the circular plate is rotatably connected to the bottom of the fixed plate, the top of the spring B is fixedly connected to a support plate, and the inner wall of the fixed plate is provided with a long groove.

[0013] Preferably, a magnetic plate is fixedly connected to the outer wall of the tray, a magnetic groove is formed on the surface of the circular plate, a fixing block is fixedly connected to the top of the fixing plate, a placement ring is slidably connected to the outer wall of the fixing block, and a thin paper is fixedly connected to the inner wall of the placement ring.

[0014] Preferably, the magnetic plate and the magnetic groove are magnetic, and the magnetic poles on opposite sides of the magnetic plate and the magnetic groove repel each other.

[0015] Preferably, the thread helix angle of the threaded telescopic rod outer wall is 55 degrees, and the thin paper is a semi-transparent paper material.

[0016] Preferably, the soft pad is made of rubber and is elastic, the annular strip is a circular ring structure, the outer wall of the fixing plate is slidably connected to the inner wall of the placement groove, and the outer wall of the circular plate is slidably connected to the inner wall of the placement groove.

[0017] This invention provides a high-pressure leak detector for aerosol cans, which has the following beneficial effects:

[0018] 1. This invention, by setting up a bubble sputtering mechanism, achieves the rotation of the aerosol can itself during the rotation and descent of the aerosol can, and shakes the high-pressure liquefied gas inside the aerosol can. This accelerates the occurrence of air leakage if there is any leakage in the can, thus improving work efficiency. Once there is a leak, it automatically enters the water body to generate bubbles that float to the surface, completing the shaking of the can and speeding up the detection efficiency.

[0019] 2. This invention, by setting up a bubble sputtering mechanism, prevents the fixed plate from rotating, thus blocking the liquid poured into it. The rotation of the aerosol can, however, creates a relative rotational motion with the liquid. As the liquid continuously sweeps across the surface of the aerosol can, the bubbles exposed at the leak point do not adhere to the surface of the aerosol can but are quickly carried away by the water flow. They then rise due to their own buoyancy, accelerating the speed at which the bubbles rise to the water surface and further improving the efficiency of observing aerosol can leaks.

[0020] 3. This invention, by setting up a bubble sputtering mechanism, allows bubbles to be generated and rise to the water surface. These bubbles then explode spontaneously, creating a very small but dense sputtering effect. The sputtered bubbles propel colored water into the thin paper placed in the upper ring. Since the distance between the thin paper and the aerosol can is controlled within the bubble sputtering range, a quick assessment of whether the aerosol can is leaking can be achieved simply by observing whether the white, semi-transparent paper has been splashed with color. This simple and quick assessment allows one person to manage the testing of multiple aerosol cans without needing to observe the bubble generation on a single can, reducing testing errors and inefficiency.

[0021] 4. This invention, by setting up a bubble separation mechanism, causes the annular strip and rotating plate to rotate when the arc plate rotates. The fixed plate and circular plate are controlled by the telescopic rod and cannot rotate, but can be raised and lowered. Thus, the annular strip and rotating plate slide and rotate in the long groove in the fixed plate, so that the bubbles pass over the rotating plate during their ascent, come into contact with it, and are separated one by one by the separation holes in the rotating plate. This separates the large bubbles into many small bubbles, thereby making the bubble size as uniform as possible. This makes it easier to observe the amount of liquid of the same splash size produced by the thin paper, to judge the degree of bubble exposure, and thus to judge the leakage rate and degree of different aerosol cans.

[0022] 5. This invention, by setting up a bubble separation mechanism, ensures that when the circular plate descends, it does not rotate, but the connecting sleeve drives the top spring B and the support plate to rotate. When the support plate rotates, the magnetic plate on the outer wall of the support plate passes the magnetic groove above the circular plate. Due to the magnetic repulsion between the magnetic plate and the magnetic groove, they are pushed apart. After being pushed apart, they are pulled back by the elastic force of spring B, thus completing the impact on the bottom of the aerosol can placed above the support plate. This improves the airtightness detection effect of the aerosol can and avoids the problem of the aerosol can not leaking under static conditions but leaking under dynamic conditions during subsequent transportation. Furthermore, static and dynamic testing are completed in one step, improving efficiency while reducing a lot of working time and work pressure for the staff. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point A;

[0025] Figure 3 This is a schematic diagram of the bubble sputtering mechanism of the present invention. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the bubble sputtering mechanism of the present invention. Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the disassembly structure of the bubble sputtering mechanism of the present invention. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the disassembly structure of the bubble sputtering mechanism of the present invention. Figure 2 ;

[0029] Figure 7 This is a motion diagram of the bubble sputtering mechanism of the present invention;

[0030] Figure 8 For the present invention Figure 3 Enlarged view of point B;

[0031] Figure 9 For the present invention Figure 3 Enlarged view of point C.

[0032] In the diagram: 1. Placement slot, 2. Leak detection box, 3. Bubble sputtering mechanism, 301. Soft pad, 302. Arc plate, 303. Connecting rod, 304. Connecting sleeve, 305. Threaded telescopic rod, 306. Round plate, 307. Spring A, 308. Telescopic rod, 309. Fixing block, 310. Placement ring, 311. Thin paper, 4. Bubble separation mechanism, 401. Annular strip, 402. Fixing plate, 403. Rotating plate, 404. Spring B, 405. Support plate, 406. Magnetic plate, 407. Magnetic groove, 408. Long groove, 409. Separation hole. Detailed Implementation

[0033] Example 1:

[0034] Please see Figure 1-3 The present invention provides a technical solution: a high-pressure leak detector for aerosol cans, including a leak detection box 2, a placement groove 1 on the top of the leak detection box 2, and a bubble sputtering mechanism 3 and a bubble separation mechanism 4 inside the placement groove 1;

[0035] The bubble sputtering mechanism 3 includes:

[0036] The soft pad 301 is a long strip-shaped structure. An arc-shaped plate 302 is fixedly connected to the outer wall of the soft pad 301. A connecting rod 303 is fixedly connected to the outer wall of the arc-shaped plate 302. A connecting sleeve 304 is fixedly connected to one end of the connecting rod 303. A threaded telescopic rod 305 is threadedly connected to the inner wall of the connecting sleeve 304. The bottom end of the threaded telescopic rod 305 is fixedly connected to the bottom of the inner wall of the placement groove 1.

[0037] The circular plate 306 is a circular disc-shaped structure. The inner wall of the circular plate 306 is rotatably connected to the outer wall of the connecting sleeve 304. A telescopic rod 308 is fixedly connected to the bottom of the circular plate 306. One end of the telescopic rod 308 is fixedly connected to the bottom of the inner wall of the placement groove 1. The circular plate 306 is used to hold water.

[0038] Example 2:

[0039] Please see Figure 1-6 Based on Embodiment 1, the present invention provides a technical solution: the bubble separation mechanism 4 includes an annular bar 401, the inner wall of the annular bar 401 is fixedly connected to the outer wall of the arc plate 302, and a rotating plate 403 is fixedly connected to the outer wall of the annular bar 401.

[0040] The inner wall of the rotating plate 403 is provided with a separation hole 409. The rotating plate 403 is an arc-shaped plate structure. A spring B404 is fixedly connected to the top of the circular plate 306. A spring A307 is rotatably connected to the bottom of the circular plate 306 through a bearing. One end of the spring A307 is fixedly connected to the bottom of the inner wall of the placement groove 1.

[0041] The top of the circular plate 306 is rotatably connected to the bottom of the fixed plate 402, and the top of the spring B404 is fixedly connected to the support plate 405. The inner wall of the fixed plate 402 is provided with a long groove 408.

[0042] A magnetic plate 406 is fixedly connected to the outer wall of the tray 405. A magnetic groove 407 is opened on the surface of the circular plate 306. A fixing block 309 is fixedly connected to the top of the fixing plate 402. A placement ring 310 is slidably connected to the outer wall of the fixing block 309. A thin paper 311 is fixedly connected to the inner wall of the placement ring 310.

[0043] Place the aerosol can to be tested into the placement slot 1 in the leak detection box 2, insert the aerosol can into the soft pad 301 in the two arc plates 302, deform the soft pad 301, and clamp the aerosol can by the deformation of the soft pad 301 until the bottom of the aerosol can contacts the support plate 405. Then pour the prepared colored liquid into each placement slot 1 in the leak detection box 2. Finally, place the assembled placement ring 310 and the thin paper 311 at the fixing block 309 on the fixing plate 402.

[0044] Then, the aerosol can placed on the tray 405 will cause the tray 405 and connecting sleeve 304 to begin to descend due to their own weight, which will drive the circular plate 306 to descend and compress the spring A307 to deform it until the connecting sleeve 304 pushes the threaded telescopic rod 305 to retract to its lowest position. As the aerosol can continues to descend, the threaded telescopic rod 305 retracts itself. When each section of the threaded telescopic rod 305 retracts, it will begin to slide and rotate through the threads on the outer wall between each section. Because the thread helix angle of the outer wall thread is greater than 55 degrees, the friction of rotation is low and the rotation is relatively easy, so it will continue to rotate slowly and descend. The threaded telescopic rod 305 will drive the connecting sleeve 304 to rotate, and the connecting sleeve 304 will drive the arc plate 302 and the soft pad 301 to rotate synchronously through the connecting rod 303. The soft pad 301, which clamps the aerosol can, will also control the aerosol can to rotate and descend synchronously.

[0045] During the rotation and descent of the aerosol can, the rotation of the aerosol can itself and the shaking of the high-pressure liquefied gas inside the aerosol can are achieved. This speeds up the occurrence of any leaks in the can, improving work efficiency. Once a leak occurs, water is automatically released, causing bubbles to rise and complete the shaking of the can, thus accelerating the detection process.

[0046] Furthermore, the fixing plate 402 does not rotate, thus blocking the liquid poured into it. The rotation of the aerosol can is relative to the liquid. As the liquid continuously sweeps across the surface of the aerosol can, the bubbles that are exposed at the leak point of the aerosol can will not adhere to the surface of the aerosol can but will be quickly carried away by the water flow and begin to rise with the buoyancy of the bubbles themselves. This can accelerate the speed at which the bubbles rise to the surface of the water after being exposed, and further accelerate the efficiency of observing the leak of the aerosol can.

[0047] After bubbles are generated and rise to the surface, they explode spontaneously, creating a very small but dense splashing effect. The splashed bubbles propel colored water into the thin paper 311 placed in the ring 310 above. Since the contact distance between the thin paper 311 and the aerosol can is controlled within the bubble splashing range, it is only necessary to observe from the outside whether the white, semi-transparent thin paper 311 has been splashed with color to quickly determine whether the aerosol can is leaking. The judgment is simple and quick, and one staff member can manage the testing of multiple aerosol cans without having to observe the generation of bubbles in a single can, reducing testing errors and inefficiency.

[0048] When the arc plate 302 rotates, it also drives the annular strip 401 and the rotating plate 403 to rotate. The fixed plate 402 and the circular plate 306 are controlled by the telescopic rod 308 and cannot rotate, but they can be raised and lowered. As a result, the annular strip 401 and the rotating plate 403 slide and rotate in the long groove 408 in the fixed plate 402. When the water flow and the bubbles rise and sweep over, they will come into contact with the rotating plate 403 and be separated one by one by the separation holes 409 in the rotating plate 403. The large bubbles generated are separated into many small bubbles, so as to unify the bubble size as much as possible. This makes it easier to observe how much liquid of the same splash size is generated by the thin paper 311, to judge the degree of bubble exposure, and thus to judge the leakage rate and degree of different aerosol cans.

[0049] The threaded telescopic rod 305 slides down and rotates at a relatively slow speed, so the connecting sleeve 304, soft pad 301, and arc plate 302 also rotate at a relatively slow speed. It rotates and descends slowly in the water, which will not cause the colored water to splash up and wet the thin paper 311.

[0050] Example 3:

[0051] Please see Figure 1-9 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: the magnetic plate 406 and the magnetic groove 407 are magnetic, and the magnetic poles on opposite sides of the magnetic plate 406 and the magnetic groove 407 are like poles that repel each other.

[0052] The threaded extension rod 305 has a thread helix angle of 55 degrees on its outer wall, and the thin paper 311 is a semi-transparent paper material.

[0053] The soft pad 301 is made of rubber and is elastic. The ring strip 401 has a circular ring structure. The outer wall of the fixing plate 402 is slidably connected to the inner wall of the placement groove 1. The outer wall of the circular plate 306 is slidably connected to the inner wall of the placement groove 1.

[0054] When the circular plate 306 descends, since the circular plate 306 itself does not move, the connecting sleeve 304 drives the top spring B404 and the support plate 405 to rotate. As the support plate 405 rotates and passes through the magnetic groove 407 above the circular plate 306, it will be repelled by the magnetic repulsion between the magnetic plate 406 and the magnetic groove 407. After being repelled, it will be pulled back by the elastic force of the spring B404, thus completing the impact on the bottom of the aerosol can placed above the support plate 405. This improves the airtightness test effect of the aerosol can and avoids the problem of the aerosol can not leaking when it is static, but leaking when it is dynamically transported. Furthermore, the static and dynamic tests are completed in one step, which improves efficiency and reduces a lot of working time and work pressure for the staff.

[0055] After the final test is completed, simply wear gloves to remove the aerosol can from it, then put the aerosol can back into the placement slot 1, and cover it with a new placement ring 310 for repeated use.

[0056] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-pressure leak detector for aerosol cans, comprising a leak detection box (2), wherein the top of the leak detection box (2) is provided with a placement slot (1), characterized in that: The placement groove (1) is equipped with a bubble sputtering mechanism (3) and a bubble separation mechanism (4); the bubble sputtering mechanism (3) includes: a soft pad (301), the soft pad (301) is a long strip plate structure, an arc plate (302) is fixedly connected to the outer wall of the soft pad (301), a connecting rod (303) is fixedly connected to the outer wall of the arc plate (302), a connecting sleeve (304) is fixedly connected to one end of the connecting rod (303), and the inner wall of the connecting sleeve (304) is threaded. A threaded telescopic rod (305) is provided, the bottom end of which is fixedly connected to the bottom of the inner wall of the placement groove (1); a circular plate (306) is provided, the circular plate (306) is a circular disc structure, the inner wall of the circular plate (306) is rotatably connected to the outer wall of the connecting sleeve (304), a telescopic rod (308) is fixedly connected to the bottom of the circular plate (306), one end of the telescopic rod (308) is fixedly connected to the bottom of the inner wall of the placement groove (1), and the circular plate (306) is used to hold water; The bubble separation mechanism (4) includes an annular bar (401), the inner wall of the annular bar (401) is fixedly connected to the outer wall of the arc plate (302), and a rotating plate (403) is fixedly connected to the outer wall of the annular bar (401); The rotating plate (403) has a separation hole (409) on its inner wall. The rotating plate (403) is an arc-shaped plate structure. A spring B (404) is fixedly connected to the top of the circular plate (306). A spring A (307) is rotatably connected to the bottom of the circular plate (306) through a bearing. One end of the spring A (307) is fixedly connected to the bottom of the inner wall of the placement groove (1). The top of the circular plate (306) is rotatably connected to the bottom of the fixed plate (402), the top of the spring B (404) is fixedly connected to the support plate (405), and the inner wall of the fixed plate (402) is provided with a long groove (408); A magnetic plate (406) is fixedly connected to the outer wall of the tray (405), a magnetic groove (407) is opened on the surface of the circular plate (306), a fixing block (309) is fixedly connected to the top of the fixing plate (402), a placement ring (310) is slidably connected to the outer wall of the fixing block (309), and a piece of thin paper (311) is fixedly connected to the inner wall of the placement ring (310).

2. The high-pressure leak detector for aerosol cans according to claim 1, characterized in that: The magnetic plate (406) and the magnetic groove (407) are magnetic, and the magnetic poles on opposite sides of the magnetic plate (406) and the magnetic groove (407) repel each other.

3. The high-pressure leak detector for aerosol cans according to claim 2, characterized in that: The thread helix angle of the outer wall thread of the threaded telescopic rod (305) is 55 degrees, and the thin paper (311) is a semi-transparent paper material.

4. The high-pressure leak detector for aerosol cans according to claim 3, characterized in that: The soft pad (301) is made of rubber and is elastic. The annular strip (401) has a circular ring structure. The outer wall of the fixing plate (402) is slidably connected to the inner wall of the placement groove (1). The outer wall of the circular plate (306) is slidably connected to the inner wall of the placement groove (1).

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