Sealing mechanism for helium detection equipment

Abstract

The utility model discloses a sealing mechanism for helium detection equipment, which belongs to the technical field of battery detection and comprises a detection shell, an air pump is mounted on the detection shell, the output end of the air pump is connected with a sealing component for isolating gas, and an auxiliary component for enhancing the sealing effect is arranged in the sealing component. When the sealing sleeve is installed, the sealing sleeve is firstly clamped in the detection shell, and then the air bag is continuously pressed. Along with continuous compression of the air bag, air flow is conveyed into the sealed air bag through the hose and the one-way air inlet valve, so that the size of the sealed air bag is gradually increased until the long groove is filled with the air flow, the air flow is tightly attached to the outer wall of the air injection pipe, and corresponding deformation occurs; therefore, the helium entering the detection shell and the internal battery body cannot leak, and the design effectively avoids the possible influence on the sealing performance when a traditional inflator mechanism is used for gas injection.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery detection, and particularly relates to a sealing mechanism for helium detection equipment. Background Art

[0002] In the battery production process, the detection of the sealing performance of the battery top cover is a very important process, because the sealing performance of the battery is directly related to the safety of battery use.

[0003] Some utility model patents in the technical field of battery detection are disclosed in the prior art. Among them, the utility model patent with the application number CN216382580U discloses a sealing mechanism for helium detection equipment, and its basic description is as follows: This utility model relates to the technical field of battery detection, and particularly relates to a sealing mechanism for helium detection equipment; the lower ends of the upper and lower pressure rods extend into the interior of the box body and are docked with the injection holes of the battery to fill helium into the interior of the battery. The existing upper and lower pressure rods move up and down, resulting in a relatively high leakage at the connection with the sealing ring. In this utility model, the upper and lower pressure rods that need to move up and down are hidden inside the bellows, so that when helium detection is carried out, helium gas will not overflow to the outside, so as to achieve the overall high-vacuum sealing requirement. The sealing rings at both ends inside the bellows seal the contact parts between the bellows and the injection component and the surface of the box body, reducing the leakage caused by the up and down movement of the upper and lower pressure rods and the sealing ring, thereby improving the accuracy of the detection results.

[0004] In the actual implementation process, when gas is injected by using the air pump mechanism in the above document, it is easy to cause wear of the sealing sleeve. The sealing performance of the worn sealing sleeve will decrease, so it needs to be replaced regularly.

[0005] Based on this, the utility model designs a sealing mechanism for helium detection equipment to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a sealing mechanism for helium detection equipment, which solves the problem that when gas is injected by using the air pump mechanism, it is easy to cause wear of the sealing sleeve. The sealing performance of the worn sealing sleeve will decrease, so it needs to be replaced regularly.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A sealing mechanism for helium detection equipment includes a detection housing, an air pump is installed on the detection housing, the output end of the air pump is connected to a sealing component for isolating gas, an auxiliary component for enhancing the sealing effect is arranged inside the sealing component, two fixing components for limiting the sealing component are connected to the sealing component, and a connecting pipe is connected to the sealing component.

[0009] As a further description of the above technical solution:

[0010] The sealing component includes an air intake pipe, which is connected to the output end of the air pump. The connecting pipe is installed in the air intake pipe, and the connecting pipe is connected to the input end of the air pump. An air injection pipe is connected under the air intake pipe. A sealing sleeve is provided on the outer sleeve of the air injection pipe. The sealing sleeve is inserted through and clamped in the detection shell, and a long groove is opened in the sealing sleeve.

[0011] As a further description of the above technical solution:

[0012] The battery body is placed in the detection shell, and the gas injection pipe is connected to the injection hole of the battery body.

[0013] As a further description of the above technical solution:

[0014] The auxiliary component includes a sealing airbag, which is stuck in the long groove. A one-way air inlet valve is connected to the sealing airbag, which passes through a sealing sleeve. A hose is connected to the air inlet end of the one-way air inlet valve, one end of which is connected to a pressing airbag. The airbag is also connected to an air outlet valve, which passes through and is connected to the sealing sleeve. A sealing plug is stuck in the air outlet valve.

[0015] As a further description of the above technical solution:

[0016] A one-way air inlet for restoring the state of the pressing airbag is provided through the pressing airbag.

[0017] As a further description of the above technical solution:

[0018] The end surface diameter of the sealing plug is slightly larger than the inner diameter of the air outlet valve.

[0019] As a further description of the above technical solution:

[0020] The fixing component includes a connecting plate, which is connected to the sealing sleeve, a rectangular groove is provided in the connecting plate, a positioning shell is slidably connected in the rectangular groove, the positioning shell is installed on the detection shell, a sliding groove is provided in the positioning shell, a limiting block is slidably connected in the sliding groove, two return springs are provided in the sliding groove, and the two return springs are both connected to the limit block.

[0021] As a further description of the above technical solution:

[0022] The upper area of the limit block is arranged in an arc shape for easy extrusion.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0024] 1. In the present utility model, when installing the sealing sleeve, first snap it into the detection housing, and then continuously press the airbag. As the airbag is continuously compressed, airflows are delivered into the internal of the sealing airbag through the hose and the one-way intake valve, causing the sealing airbag to gradually increase in volume until it fills the long groove and closely adheres to the outer wall of the injection pipe and undergoes corresponding deformation. Then, by starting the air pump to suck helium from the connecting pipe, helium entering the detection housing and the internal battery body will not leak. Such a design effectively avoids the possible impact on the sealing performance when using the traditional air pump mechanism for gas injection.

[0025] 2. In the present utility model, when installing the sealing sleeve, fix it in the detection housing and apply pressure to make the rectangular groove move outside the positioning housing. Continue to apply pressure to make the limiting groove push the limiting block to slide in the sliding groove. After moving away from the rectangular groove, the return spring provides elastic force to make the limiting block continue to slide and finally get stuck on the connecting plate, realizing the precise positioning of the sealing sleeve and preventing it from tilting or falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a three-dimensional structural schematic diagram of a sealing mechanism for a helium detection device proposed by the present utility model;

[0027] Figure 2 FIG. is a three-dimensional structural schematic diagram of a sealing component of a sealing mechanism for a helium detection device proposed by the present utility model;

[0028] Figure 3 FIG. is a three-dimensional sectional structural schematic diagram of a sealing sleeve of a sealing mechanism for a helium detection device proposed by the present utility model;

[0029] Figure 4 FIG. is a three-dimensional structural schematic diagram of a fixing component of a sealing mechanism for a helium detection device proposed by the present utility model;

[0030] LEGEND DESCRIPTION:

[0031] 1. Detection housing; 2. Air pump; 3. Sealing component; 31. Intake pipe; 32. Injection pipe; 33. Sealing sleeve; 34. Long groove; 4. Auxiliary component; 41. Sealing airbag; 42. One-way intake valve; 43. Hose; 44. Pressing airbag; 45. Exhaust valve; 46. Sealing plug; 5. Fixing component; 51. Connecting plate; 52. Rectangular groove; 53. Positioning housing; 54. Sliding groove; 55. Limiting block; 56. Return spring; 6. Connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-4 ,

[0034] First Embodiment:

[0035] The present invention provides a technical solution: a sealing mechanism for a helium detection device, including a detection housing 1, an air pump 2 is installed on the detection housing 1, the output end of the air pump 2 is connected to a sealing component 3 for isolating gas, an auxiliary component 4 for enhancing the sealing effect is arranged in the sealing component 3, two fixing components 5 for limiting the sealing component 3 are connected to the sealing component 3, and a connecting pipe 6 is connected to the sealing component 3.

[0036] Specifically, as Figures 2-3 shown, the sealing component 3 includes an intake pipe 31, the intake pipe 31 is connected to the output end of the air pump 2, the connecting pipe 6 is installed in the intake pipe 31, the connecting pipe 6 is connected to the input end of the air pump 2, a gas injection pipe 32 is connected below the intake pipe 31, a sealing sleeve 33 is sleeved outside the gas injection pipe 32. By setting the gas injection pipe 32 and the sealing sleeve 33, a basic sealing effect can be achieved after the gas injection pipe 32 passes through the sealing sleeve 33. The sealing sleeve 33 is clamped through the detection housing 1, a long groove 34 is opened in the sealing sleeve 33, a battery body is placed in the detection housing 1, and the gas injection pipe 32 is docked with the injection hole of the battery body. The auxiliary component 4 includes a sealing airbag 41, the sealing airbag 41 is clamped in the long groove 34. By setting the sealing airbag 41 and the long groove 34, the shape of the sealing airbag 41 is consistent with the spatial size inside the long groove 34, so that the sealing airbag 41 can be firmly fixed in the long groove 34 and will not come off; a one-way intake valve 42 is connected inside the sealing airbag 41. By setting the one-way intake valve 42, the intake function can be intelligently realized through the one-way intake valve 42, and the problem of gas leakage from the one-way intake valve 42 can be avoided; the one-way intake valve 42 penetrates through the sealing sleeve 33, the intake end of the one-way intake valve 42 is connected to a hose 43, one end of the hose 43 is connected to a pressing airbag 44, and an air outlet valve 45 is also connected inside the airbag. The air outlet valve 45 penetrates through and is connected in the sealing sleeve 33, and a sealing plug 46 is clamped in the air outlet valve 45. By setting the sealing plug 46, the sealing plug 46 can block the air outlet of the air outlet valve 45 to avoid gas leakage; a one-way intake port for restoring the state of the pressing airbag 44 is provided through the pressing airbag 44, and the end face diameter of the sealing plug 46 is slightly larger than the inner diameter of the air outlet valve 45.

[0037] During operation, after inserting the injection tube 32 into the sealing sleeve 33, pressure is continuously applied to the pressing airbag 44. At this time, the pressing airbag 44 conveys air flow through the hose 43 and the one-way intake valve 42 into the sealing airbag 41. Subsequently, the sealing airbag 41 gradually increases in volume, fills the long groove 34, adheres to the outer wall of the injection tube 32 and deforms. Then, by starting the air pump 2, helium is sucked from the connecting pipe 6. At this time, the helium entering the detection housing 1 and the internal battery body will not leak, thus avoiding the problem that the airtightness is easily affected when using a pump mechanism for gas injection.

[0038] Second Embodiment:

[0039] Specifically, as Figure 4 shown, the fixing component 5 includes a connecting plate 51, the connecting plate 51 is connected to the sealing sleeve 33, a rectangular groove 52 is formed in the connecting plate 51, and a positioning shell 53 is slidably connected in the rectangular groove 52. By providing the rectangular groove 52 and the positioning shell 53, the positioning shell 53 can limit the rectangular groove 52 to prevent the rectangular groove 52 from shaking or shifting; the positioning shell 53 is installed on the detection housing 1, a sliding groove 54 is formed in the positioning shell 53, and a limiting block 55 is slidably connected in the sliding groove 54. By providing the sliding groove 54 and the limiting block 55, the sliding groove 54 limits the limiting block 55 to prevent the limiting block 55 from shaking during sliding; two pulling springs 56 are provided in the sliding groove 54. By providing the pulling springs 56, when the limiting block 55 loses the extrusion force, at this time the pulling springs 56 apply an elastic force to the limiting block 55 to make it quickly reset; both of the two pulling springs 56 are connected to the limiting block 55, and the upper region of the limiting block 55 is set as an arc for easy extrusion.

[0040] When installing the sealing sleeve 33, the sealing sleeve 33 is clamped in the detection housing 1 and continuously pressed. Subsequently, the rectangular groove 52 slides outside the positioning shell 53, and then continues to be pressed. At this time, the limiting groove applies pressure to the limiting block 55, and the pressure drives the limiting block 55 to slide in the sliding groove 54. When the limiting block 55 is away from the rectangular groove 52, at this time the pulling spring 56 applies an elastic force to the limiting block 55, and the elastic force drives the limiting block 55 to slide in the sliding groove 54. At this time, the limiting block 55 is clamped on the connecting plate 51, thus realizing the limitation of the sealing sleeve 33 and avoiding the problem that the sealing sleeve 33 tilts or detaches.

[0041] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sealing mechanism for a helium detection device, including a detection housing (1), characterized in that, An air pump (2) is mounted on the detection housing (1); an output end of the air pump (2) is connected to a sealing component (3) for isolating gas; an auxiliary component (4) for enhancing the sealing effect is arranged inside the sealing component (3); two fixing components (5) for limiting the position of the sealing component (3) are connected to the sealing component (3); and a connecting pipe (6) is connected to the sealing component (3).

2. The sealing mechanism for a helium leak detection device according to claim 1, wherein, The sealing component (3) comprises an air intake pipe (31), the air intake pipe (31) being connected to the output end of the air pump (2), the connecting pipe (6) being installed in the air intake pipe (31), the connecting pipe (6) being connected to the input end of the air pump (2), an air injection pipe (32) being connected below the air intake pipe (31), the air injection pipe (32) being provided with a sealing sleeve (33) on its outer sleeve, the sealing sleeve (33) being inserted through and clamped in the detection housing (1), and a long groove (34) being provided in the sealing sleeve (33).

3. The sealing mechanism for a helium leak detection device according to claim 2, characterized in that, A battery body is placed in the detection housing (1), and the gas injection pipe (32) is connected to the injection hole of the battery body.

4. A sealing mechanism for a helium leak detection device according to claim 2, characterized in that, The auxiliary component (4) comprises a sealing airbag (41), the sealing airbag (41) being clamped in the long groove (34), the sealing airbag (41) being connected to a one-way air inlet valve (42), the one-way air inlet valve (42) being inserted into the sealing sleeve (33), the air inlet end of the one-way air inlet valve (42) being connected to a hose (43), one end of the hose (43) being connected to a pressing airbag (44), the airbag being further connected to an air outlet valve (45), the air outlet valve (45) being inserted into the sealing sleeve (33), and a sealing plug (46) being clamped in the air outlet valve (45).

5. The sealing mechanism for a helium leak detection device according to claim 4, wherein, A one-way air inlet is provided through the pressing airbag (44) for restoring the state of the pressing airbag (44).

6. A sealing mechanism for a helium leak detection device according to claim 4, characterized in that, The end surface diameter of the sealing plug (46) is slightly larger than the inner diameter of the outlet valve (45).

7. A sealing mechanism for a helium leak detection device according to claim 2, characterized in that, The fixing component (5) comprises a connecting plate (51), the connecting plate (51) being connected to the sealing sleeve (33), the connecting plate (51) being provided with a rectangular groove (52), the rectangular groove (52) being slidably connected with a positioning shell (53), the positioning shell (53) being mounted on the detection housing (1), the positioning shell (53) being provided with a sliding groove (54), the sliding groove (54) being slidably connected with a limiting block (55), the sliding groove (54) being provided with two return springs (56), and the two return springs (56) being connected to the limiting block (55).

8. A sealing mechanism for a helium leak detection device according to claim 7, characterized in that, The upper area of the limit block (55) is arranged in an arc shape to facilitate extrusion.

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