Container leak detection device

Abstract

The present invention discloses a container leak detection device, which relates to the field of container detection devices. The device comprises a bracket, a control device, and at least one set of a gas injection device and a gas detection device arranged on the bracket; the gas injection device is used to seal the concave cavity of the metal container and inject gas therein; the gas detection device is used to detect whether there is gas leakage at the bottom of the metal container; the control device is electrically connected to at least one of the gas injection devices. The container leak detection device can be used to perform leak detection tests on multiple metal containers at the same time, and the operation is simple, which greatly improves the work efficiency and accuracy.

Description

Technical Field

[0001] The invention relates to the field of container detection equipment, and in particular to a container leakage detection equipment. Background Art

[0002] In the preparation process of metal containers such as metal cups, the metal sheet is usually rolled into a tube, cut into small sections, and then another metal sheet is welded to the small section of metal tube as the bottom to make a preliminary container. If used as a liquid container such as a cup, the metal container must be airtight.

[0003] In the actual production process, the bottom plate and the metal pipe are sometimes not welded tightly, resulting in gaps that are not well welded. These gaps are difficult to distinguish with the naked eye. Therefore, workers are required to inject air into the container and then put the bottom of the container into water to observe whether there is any leakage at the bottom. However, pure manual operation is inefficient and prone to problems such as improper operation and misjudgment.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a container leak detection device, aiming to improve the leak detection efficiency of metal containers in factories.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A container leak detection device comprises a bracket, a control device and at least one set of a gas injection device and a gas detection device arranged on the bracket; the gas injection device is used to seal the concave cavity of a metal container and inject gas therein; the gas detection device is used to detect whether gas leaks from the lower part of the metal container; the control device is electrically connected to at least one of the gas injection devices.

[0008] The container leak detection equipment described above, wherein the gas injection device includes an air compressor, a lifting mechanism, an air supply pipeline and a first sealing mechanism; the first sealing mechanism is fixedly connected to the bottom of the lifting mechanism and is used to seal the concave cavity of the metal container; the air supply pipeline connects the air compressor and the first sealing mechanism; the air outlet end of the air supply pipeline passes through the first sealing mechanism and is used to inject gas into the concave cavity of the metal container; the control mechanism is electrically connected to the air compressor and the lifting mechanism respectively.

[0009] The container leak detection equipment, wherein the first sealing mechanism includes an upper connecting piece, a first sealing ring and a lower connecting piece arranged in sequence from top to bottom; the upper part of the lower connecting piece passes through the first sealing ring and is fixedly connected to the upper connecting piece; the air supply pipeline passes through the upper connecting piece and the lower connecting piece in sequence, and its air outlet is arranged at the bottom of the lower connecting piece.

[0010] The container leak detection equipment, wherein the gas detection device includes a second sealing mechanism, an exhaust pipe and a leak detection mechanism; the second sealing mechanism is used to seal the lower part of the metal container; the exhaust pipe connects the second sealing mechanism and the leak detection mechanism, and its air inlet end passes through the second sealing mechanism to receive the gas leaked from the lower part of the metal container.

[0011] The container leak detection device described above, wherein the second sealing mechanism includes a fixed sleeve, a second sealing ring and a storage table; a accommodating cavity is provided in the middle of the storage table, an exhaust hole is provided at the bottom of the cavity wall of the accommodating cavity, and the exhaust hole is connected to the exhaust pipe; the second sealing ring is provided on the storage table, and the fixed sleeve is sleeved on the second sealing ring and the storage table for fixing the second sealing ring; a first through hole adapted to the accommodating cavity is provided in the middle of the fixed sleeve.

[0012] The container leak detection device further comprises an elastic structure, the upper portion of which is connected to the second sealing mechanism, and the lower portion of which is fixedly connected to the bracket.

[0013] The container leak detection device, wherein the elastic structure includes a support platform, a support plate and a plurality of springs; the plurality of springs are arranged between the support platform and the support plate; the support platform is fixedly connected to the storage table; the support plate is fixedly connected to the bracket.

[0014] The container leak detection equipment, wherein a first boss is provided at the lower part of the support platform, and the first boss passes through the support plate; a channel adapted to the exhaust duct is provided in the first boss; the channel is connected to the exhaust hole; and the support platform and the support plate slide relative to each other under the action of pressure.

[0015] The container leak detection device, wherein a plurality of second protrusions are further provided at the lower part of the support platform, and the plurality of second protrusions are circumferentially arranged with the first protrusion as the center; the second protrusions sequentially pass through the spring and the support plate.

[0016] The container leak detection device, wherein the leak detection mechanism includes a tube cover, a transparent tube and a base arranged in sequence from top to bottom; a second through hole is arranged on the upper part of the tube cover; liquid is filled in the transparent tube; and the base is connected to the exhaust pipe.

[0017] Beneficial effects:

[0018] The present invention provides a container leak detection device, including a bracket, a control device, and at least one set of gas injection devices and gas detection devices arranged on the bracket; the gas injection device is used to seal the concave cavity of the metal container and inject gas therein; the gas detection device is used to detect whether there is gas leakage in the lower part of the metal container. During operation, the worker only needs to place the metal container on the gas detection device, and then operate the gas injection device through the control mechanism to seal the concave cavities of multiple metal containers and inject gas. If there is a gas leak, it can be seen from the gas detection device. By arranging multiple sets of gas injection devices and gas detection devices on the bracket, multiple metal containers can also be leaked at the same time, which is simple to operate and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the container leak detection equipment Figure 1 .

[0020] Figure 2 Schematic diagram of the structure of the container leak detection equipment Figure 2 .

[0021] Figure 3 It is a structural schematic diagram of the first sealing mechanism.

[0022] Figure 4 This is an exploded view of the first sealing mechanism.

[0023] Figure 5 It is a structural diagram of the lifting mechanism.

[0024] Figure 6 It is a structural schematic diagram of the second sealing mechanism.

[0025] Figure 7 This is an exploded view of the second sealing mechanism.

[0026] Figure 8 FIG. 4 is an exploded view of the second sealing mechanism in one embodiment.

[0027] Fig. 9 An explosion of an elastic structure in one embodiment Figure 1 .

[0028] Fig.10 An explosion of an elastic structure in one embodiment Figure 2 .

[0029] Fig.11 An explosion of an elastic structure in one embodiment Figure 3 .

[0030] Fig.12 This is a reference diagram for the usage status of the container leak detection equipment.

[0031] Fig.13 It is a structural schematic diagram of the leak detection mechanism.

[0032] Description of the main component symbols: A1-gas injection device, A2-gas detection device, 1-bracket, 2-air compressor, 3-control mechanism, 4-lifting mechanism, 5-gas supply pipeline, 6-first sealing mechanism, 7-second sealing mechanism, 8-exhaust pipeline, 9-leak detection mechanism, 61-upper connecting piece, 62-first sealing ring, 63-lower connecting piece, 51-air outlet, 71-fixing sleeve, 72-second sealing ring, 73-storage table, 74-exhaust hole, 75-first through hole, 76-elastic structure, 761-support table, 762-support plate, 763-spring, 764-first boss, 765-channel, 766-second boss, 10-pressure sensor, 91-tube cover, 92-transparent tube, 93-base, 77-annular convex strip, 41-telescopic rod, 11-metal container. DETAILED DESCRIPTION

[0033] The present invention provides a container leak detection device. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] See also Figure 1The present invention provides a container leakage detection device, including a bracket 1, a control device 3, and at least one set of a gas injection device A1 and a gas detection device A2 arranged on the bracket 1; the gas injection device A1 is used to seal the concave cavity of the metal container 11 and inject gas therein; the gas detection device A2 is used to detect whether there is gas leakage in the lower part of the metal container 11; the control device 3 is electrically connected to at least one of the gas injection devices A1. Specifically, the gas injection device A1 can cover the concave cavity opening of the metal container 11, or can be inserted into the concave cavity of the metal container 11 to close the concave cavity opening to prevent gas leakage from the upper opening. If there is a gap at the bottom of the metal container 11, when the gas leaks from the bottom gap to the outside of the metal container 11, it enters the gas detection device A2, and the gas detection device A2 can detect whether there is gas leakage in real time.

[0036] See also Figure 2 , Fig.12 In one embodiment, the gas injection device A1 includes an air compressor 2, a lifting mechanism 4, an air supply pipeline 5 and a first sealing mechanism 6; the first sealing mechanism 6 is fixedly connected to the bottom of the lifting mechanism 4 and is used to seal the concave cavity of the metal container 11; the air supply pipeline 5 connects the air compressor 2 and the first sealing mechanism 6; the gas outlet end of the air supply pipeline 5 passes through the first sealing mechanism 6 and is used to inject gas into the concave cavity of the metal container 11; the control mechanism 3 is electrically connected to the air compressor 2 and the lifting mechanism 4 respectively. When in use, the lower part of the metal container 11 is first placed in the gas detection device A2, and then the lifting mechanism 4 is started, so that the first sealing mechanism 6 is inserted into the concave cavity of the metal container 11 from above and completes the sealing. After the sealing is completed, the air compressor 2 is started to supply air, and the air will pass through the air supply pipeline 5 and the first sealing mechanism 6 in turn and enter the concave cavity of the metal container 11. Since the concave cavity of the metal container 11 forms a relatively closed space, the pressure indication number on the air compressor 2 will continue to rise during the air supply. If the pressure reaches the preset value range and the gas detection device A2 still does not show that gas is discharged, it is determined that the sealing performance of the inspected metal container 11 is qualified.

[0037] See also Figure 2 , Figure 5 Specifically, the lifting mechanism 4 is driven by a motor, and its telescopic rod 41 is connected to the upper part of the first sealing mechanism 6. The control mechanism 3 is provided with a plurality of buttons, which are respectively used to operate the air compressor 2 and the plurality of lifting mechanisms 4. The plurality of lifting mechanisms 4 can be controlled in series or in parallel.

[0038] See also Figure 3 , Figure 4In one embodiment, the first sealing mechanism 6 includes an upper connecting member 61, a first sealing ring 62 and a lower connecting member 63 arranged in sequence from top to bottom; the upper part of the lower connecting member 63 passes through the first sealing ring 62 and is fixedly connected to the upper connecting member 61; the air supply pipe 5 passes through the upper connecting member 61 and the lower connecting member 63 in sequence, and its air outlet 51 is arranged at the bottom of the lower connecting member 63. Specifically, the bottom of the lower connecting member 63 can be an inverted truncated cone, which is convenient for inserting into the metal container 11, and the lower connecting member 63 is preferably made of plastic material to avoid scratching the inner wall of the metal container 11. The first sealing ring 62 can be an elastic rubber ring, and its outer diameter is larger than the inner diameter of the metal container 11. After being inserted into the concave cavity of the metal container 11, the first sealing ring 62 squeezes the concave cavity wall to form a better sealing effect. In one embodiment, the first sealing ring 62 is an expansion sealing ring, and an air bag is arranged inside the expansion sealing ring. The first sealing ring 62 can be connected to the air compressor 2 through the air supply pipe 5, and can be expanded after being inflated to achieve a better sealing effect. Furthermore, electric valves can be respectively arranged on the multiple air supply pipes 5, and the multiple electric valves are respectively connected to the control device for precise control of the air supply.

[0039] See also Figure 2 In one embodiment, the gas detection device A2 includes a second sealing mechanism 7, an exhaust pipe 8 and a leak detection mechanism 9; the second sealing mechanism 7 is used to seal the lower part of the metal container 11; the exhaust pipe 8 connects the second sealing mechanism 7 and the leak detection mechanism 9, and its air inlet end passes through the second sealing mechanism 7 to receive the gas leaked from the lower part of the metal container 11. Specifically, the first sealing mechanism 6 is arranged above the second sealing mechanism 7. Since the metal container 11, such as a cup, is mass-produced and its outer wall has a certain curvature, after the lifting mechanism 4 descends to a certain height, the first sealing mechanism 6 and the second sealing mechanism 7 respectively press the inner wall and the outer wall of the metal container 11 to achieve a sealing effect. If there is a gap in the metal container 11, when the gas supply pressure reaches a certain value, the air will be discharged from the tiny gap, and enter the exhaust pipe 8 through the bottom of the second sealing mechanism 7, and finally enter the leak detection mechanism 9. The leak detection mechanism 9 can be an instrument such as a pressure gauge or a container filled with liquid that can indicate gas leakage.

[0040] See also Figure 2 , Figure 6 , Figure 7In one embodiment, the second sealing mechanism 7 includes a fixing sleeve 71, a second sealing ring 72 and a storage platform 73; a receiving cavity is provided in the middle of the storage platform 73, and an exhaust hole 74 is provided at the bottom of the cavity wall of the receiving cavity, and the exhaust hole 74 is connected to the exhaust pipe 8; the second sealing ring 72 is provided on the storage platform 73, and the fixing sleeve 71 is sleeved on the second sealing ring 72 and the storage platform 73 to fix the second sealing ring 72; a first through hole 75 adapted to the receiving cavity is provided in the middle of the fixing sleeve 71. The second sealing ring 72 can be an elastic rubber ring, and its inner diameter is smaller than the outer diameter of the metal container 11. After being inserted into the concave cavity of the metal container 11, the second sealing ring 72 squeezes the outer wall of the metal container 11. The second sealing ring 72 can also be an expansion sealing ring, and is connected to the air compressor 2. Specifically, an annular convex strip 77 is provided at the top of the hole wall of the first through hole 75, and the annular convex strip 77 is used to press the second sealing ring 72 on the storage platform 73.

[0041] See also Figure 8 In one embodiment, the container leak detection device further includes an elastic structure 76, the upper portion of which is connected to the second sealing mechanism 7, and the lower portion of which is fixedly connected to the bracket 1. The lowering height of the lifting mechanism 4 can be manually controlled, but manual control may result in too large a lowering height, resulting in excessive squeezing between the first sealing mechanism 6, the metal container 11, and the second sealing mechanism 7, causing deformation or damage to the equipment or product. By providing the elastic structure 76, when the lifting mechanism 4 is excessively pressed down, it plays a certain buffering role and provides a certain elastic space, so that the first sealing mechanism 6, the metal container 11, and the second sealing mechanism 7 can be sealed and matched under appropriate pressure.

[0042] See also Fig. 9 In one embodiment, the elastic structure 76 includes a support platform 761, a support plate 762 and a plurality of springs 763; the plurality of springs 763 are arranged between the support platform 761 and the support plate 762; the support platform 761 is fixedly connected to the storage platform 73; the support plate 762 is fixedly connected to the bracket 1. When the support platform 761 is subjected to downward pressure, the plurality of springs 763 will be compressed, and the support platform 761 will move downward, which can avoid excessive extrusion of the first sealing mechanism 6, the metal container 11 and the second sealing mechanism 7. Specifically, the bottom of the fixed sleeve 71 is connected to the support plate 762, covering the upper part of the support platform 761 and the plurality of springs 763.

[0043] See also Fig.10In one embodiment, a first boss 764 is provided at the lower part of the support platform 761, and the first boss 764 passes through the support plate 762; a channel 765 adapted to the exhaust pipe 8 is provided in the first boss 764; the channel 765 is connected to the exhaust hole 74; under the action of pressure, the support platform 761 and the support plate 762 slide relative to each other. The first boss 764 is used to enable the support platform 761 and the support plate 762 to slide relative to each other in a fixed direction, so that the multiple springs 763 can perform telescopic deformation in a fixed direction, which helps to reduce the deformation of the springs 763 and prolong the service life. The exhaust pipe 8 passes through the channel 765 and is connected to the exhaust hole 74.

[0044] See also Fig.11 In one embodiment, a plurality of second convex columns 766 are further provided at the lower portion of the support platform 761, and the plurality of second convex columns 766 are circumferentially arranged around the first convex column 764; the second convex columns 766 sequentially pass through the spring 763 and the support plate 762. The second convex columns 766 are used to further keep the position of the spring 763 fixed to prevent it from shifting after long-term use.

[0045] See also Fig.12 In one embodiment, the container leak detection device further includes a pressure sensor 10, which is electrically connected to the control mechanism 3 and is used to detect the downward pressure formed by the lifting mechanism 4. Specifically, the pressure sensor 10 can be arranged between the bracket 1 and the support platform 761. When the support platform 761 moves downward under pressure, it presses on the pressure sensor 10. When the detected pressure value is fed back to the control mechanism 3, when the pressure value reaches a preset range, the lifting mechanism 4 is controlled to stop, which can prevent the lifting mechanism 4 from descending too high and ensure the sealing effect. The control mechanism 3 can be provided with a single-chip microcomputer, which can process the data of the pressure sensor 10 and control the operation of the lifting mechanism 4.

[0046] See also Fig.13 In one embodiment, the leak detection mechanism 9 includes a tube cover 91, a transparent tube 92 and a base 93 which are sequentially arranged from top to bottom; a second through hole is arranged on the upper portion of the tube cover 91; liquid is contained in the transparent tube 92; and the base 93 is connected to the exhaust pipe 8. The liquid can be tap water. When the gas enters the leak detection mechanism 9, the inspector can observe bubbles coming out of the tap water in the transparent tube 92. As a further improvement, an exhaust gas pipe can also be connected to the upper portion of the tube cover 91, and the exhaust gas pipe is connected to a collection tank. When the gas passes through the leak detection mechanism 9, the liquid therein will be brought out and liquid droplets will be formed in the exhaust gas pipe. Finally, the condensed liquid can be collected by the collection tank and reused.

[0047] In one embodiment, the exhaust duct 8 is a metal tube with a fixed shape. The metal tube can be a copper tube or a stainless steel tube. If the metal container 11 is not welded well and there is a gap, the air discharged through the gap is only a small amount or a trace amount. If the exhaust duct 8 uses a hose, there is a problem of structural instability. A small amount or a trace amount of discharged air may be blocked when passing through the hose, resulting in a decrease in the sensitivity and stability of the leak detection mechanism 9. The use of a metal tube with a fixed shape can avoid the aforementioned problem.

[0048] To sum up, the present invention uses the first sealing mechanism 6 and the second sealing mechanism 7 to seal the concave cavity of the metal container 11 and wrap its bottom, and then seals its bottom, and then injects gas into the concave cavity of the metal container 11 through the air compressor 2. If there is a gap at the bottom of the metal container 11, it can be detected by the leak detection mechanism 9. The inspector only needs to place the metal container 11 on the second sealing mechanism 7, and then start the lifting mechanism 4 and the air compressor 2 in sequence to complete the inspection. The operation is simple, and multiple products can be inspected at the same time. Compared with the existing inspection methods, the degree of automation is improved, and the work efficiency and accuracy are greatly improved.

[0049] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A container leak detection device, characterized in that: The invention comprises a support, a control device and at least one set of a gas injection device and a gas detection device arranged on the support; the gas injection device is used to seal the concave cavity of the metal container and inject gas therein; the gas detection device is used to detect whether there is gas leakage at the lower part of the metal container; the control device is electrically connected to at least one of the gas injection devices; The gas detection device comprises a second sealing mechanism, an exhaust pipe and a leak detection mechanism; the second sealing mechanism is used to seal the lower part of the metal container; the exhaust pipe connects the second sealing mechanism and the leak detection mechanism, and its air inlet end passes through the second sealing mechanism to receive the gas leaked from the lower part of the metal container; The second sealing mechanism includes a fixing sleeve, a second sealing ring and a storage platform; a storage cavity is provided in the middle of the storage platform, an exhaust hole is provided at the bottom of the cavity wall of the storage cavity, and the exhaust hole is connected to the exhaust pipe; the second sealing ring is provided on the storage platform, and the fixing sleeve is sleeved on the second sealing ring and the storage platform to fix the second sealing ring; a first through hole adapted to the storage cavity is provided in the middle of the fixing sleeve; It also includes an elastic structure, the upper part of which is connected to the second sealing mechanism, and the lower part of which is fixedly connected to the bracket; The elastic structure includes a support platform, a support plate and a plurality of springs; the plurality of springs are arranged between the support platform and the support plate; the support platform is fixedly connected to the storage platform; the support plate is fixedly connected to the bracket; A first boss is provided at the lower part of the support platform, and the first boss passes through the support plate; a channel adapted to the exhaust duct is provided in the first boss; the channel is connected to the exhaust hole; under the action of pressure, the support platform and the support plate slide relative to each other.

2. The container leak detection device according to claim 1, characterized in that: The gas injection device includes an air compressor, a lifting mechanism, an air supply pipeline and a first sealing mechanism; the first sealing mechanism is fixedly connected to the bottom of the lifting mechanism and is used to seal the concave cavity of the metal container; the air supply pipeline connects the air compressor and the first sealing mechanism; the air outlet end of the air supply pipeline passes through the first sealing mechanism and is used to inject gas into the concave cavity of the metal container; the control device is electrically connected to the air compressor and the lifting mechanism respectively.

3. The container leak detection device according to claim 2, characterized in that: The first sealing mechanism includes an upper connecting member, a first sealing ring and a lower connecting member arranged in sequence from top to bottom; the upper part of the lower connecting member passes through the first sealing ring and is fixedly connected to the upper connecting member; the air supply pipeline passes through the upper connecting member and the lower connecting member in sequence, and its air outlet is arranged at the bottom of the lower connecting member.

4. The container leak detection device according to claim 1, characterized in that: A plurality of second protrusions are also provided at the lower part of the support platform, and the plurality of second protrusions are circumferentially arranged with the first protrusion as the center; the second protrusions pass through the spring and the support plate in sequence.

5. The container leak detection device according to claim 1, characterized in that: The leak detection mechanism comprises a tube cover, a transparent tube and a base which are arranged in sequence from top to bottom; a second through hole is arranged on the upper part of the tube cover; liquid is filled in the transparent tube; and the base is connected to the exhaust pipe.

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