Air cathode leakage test device

Abstract

The utility model discloses an air cathode leakage test device comprising a first housing, and an air cathode to be tested is installed below the first housing; the second shell is connected with a gas pipe, and a communicated gas pipeline is arranged in the second shell and the first shell; the third shell is used for filtering gas conveyed by the gas pipe and is positioned between the second shell and the gas pipe; the device has the beneficial effects that high-pressure gas is input into the air cathode to be detected through the gas pipe, the second shell and the first shell, the working pressure of the air cathode structure is simulated, and pure water is matched with compressed air, so that not only can the liquid leakage condition be detected, but also use traces caused by the use of electrolyte and a metal anode can be avoided, and the shipment quality of products is improved.

Description

Technical Field

[0001] The utility model relates to the field of air cathode testing and inspection, in particular to an air cathode leak testing device. Background Art

[0002] The portable metal air power source has two air cathode structures, each of which includes two air membranes, which are generally fixed by injection molding to form the above air cathode structure. The air membrane has waterproof, breathable and catalytic effects. After assembly, the open end of the air cathode structure will be sealed by the cover body, and the electrolyte is contained between the two air membranes, which can only be ventilated through the air membrane.

[0003] Due to manufacturing errors, injection mold defects and other issues, some air cathode structures have electrolyte leakage during use. During the test phase before the product leaves the factory, all products have passed the test of holding clean water. During this test, defective products will not leak, and will only leak during use. According to research, this is because when the metal-air power source is working, the metal anode undergoes an oxidation-reduction reaction to produce gas, which causes the internal pressure of the air cathode structure to increase, and leakage will occur in the defective areas.

[0004] However, directly testing for leaks in working conditions will leave traces of product use, affecting product shipment. In order to carefully check whether the air cathode structure is leaking before shipment, our company has developed a leak testing device that can simulate the working pressure of the metal air power supply without leaving any traces of use. Summary of the invention

[0005] The purpose of the utility model is to provide an air cathode leak test device, which can conveniently perform a traceless test on the air cathode. On the premise of being able to test whether a product has defects, no trace of use is left on the product, and normal sales of the product are not affected.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An air cathode leak testing device, comprising:

[0008] a first shell, an air cathode to be tested is installed below the first shell;

[0009] A second shell body, the second shell body is connected to a gas pipe, and a gas pipeline communicating with the first shell body is provided inside the second shell body;

[0010] The third shell is used to filter the gas transported by the trachea, and the third shell is located between the second shell and the trachea.

[0011] Preferably, a sealing plate is provided at the lower part of the first shell, at least one sealing ring connected to the air cathode is provided on the sealing plate, and an air hole connected to the air cathode is provided on the sealing plate;

[0012] The side wall of the first shell is provided with a buckle for fixing the air cathode.

[0013] Preferably, a first cover body is provided on the first shell, and a pipe joint communicating with the first cover body is provided at the bottom of the second shell.

[0014] Preferably, a guide member is provided on the second shell, a limit member is provided on the guide member, and a second cover is provided on the limit member;

[0015] A valve stem is arranged in the second shell body, and the top end of the valve stem is connected to the second cover body through threads.

[0016] Preferably, the cross section of the limiting member is "Z"-shaped, and the cross section of the second cover body is "L"-shaped to match the limiting member.

[0017] Preferably, the bottom of the valve stem has a sealing slope, the lower part of the second housing is a valve seat, and the valve seat has a beveled edge that matches the sealing slope.

[0018] Preferably, the valve stem side wall is provided with a guide groove, and the guide member side wall is provided with a protrusion extending into the guide groove.

[0019] Preferably, the third shell is connected to the second shell via a connecting pipe, and a filter is arranged in the connecting pipe.

[0020] Preferably, a vertical baffle is provided in the third shell, and the vertical baffle is located between the air inlet and the air outlet of the third shell.

[0021] Preferably, a spiral baffle is provided in the third shell, and a detachable end cover is provided at the bottom of the third shell.

[0022] The beneficial effects of the utility model are:

[0023] 1. High-pressure gas is input into the air cathode to be tested through the air pipe, the second shell and the first shell to simulate the working pressure of the air cathode structure. The use of pure water and compressed air can not only detect leakage, but also avoid the use of electrolyte and metal anode to leave traces of use, thereby improving the quality of product shipment.

[0024] 2. The pressure of compressed air can be adjusted in real time through the second shell, and the air cathode is connected, fixed and sealed through the first shell. The overall structure is simple and can be reused. It is more environmentally friendly than using electrolyte and metal anode to test for leaks.

[0025] 3. The compressed air is filtered through the third shell to prevent oil or impurities therein from entering the second shell, the first shell and the air cathode to be tested. A detachable end cover is provided at the bottom of the third shell, which is opened regularly to clean the impurities collected therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the utility model;

[0027] Figure 2 A three-dimensional diagram of the present invention from another angle;

[0028] Figure 3 It is a cross-sectional view of the utility model;

[0029] Figure 4 for Figure 3 A partial view of the second shell;

[0030] Figure 5 for Figure 4 AA section view;

[0031] FIG6 is a partial enlarged view of point I in FIG4.

[0032] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings.

[0034] like Figure 1 As shown, an air cathode leak test device according to an embodiment of the utility model comprises:

[0035] A first shell 1, an air cathode to be tested is installed below the first shell 1;

[0036] The second shell 2 is connected to an air pipe 31, the air pipe 31 is also connected to an air compression pump, and a gas pipeline communicating with the first shell 1 is provided inside the second shell 2;

[0037] The third shell 3 is located between the second shell 2 and the air pipe 31 .

[0038] During the test, an air cathode filled with pure water is installed under the first shell 1. The gas transported by the air pipe 31 is first filtered through the third shell 3, and the filtered gas enters the first shell 1 along the second shell 2 to test the air cathode; the second shell 2 can adjust the flow rate of the transported gas to adjust the gas pressure and better simulate the test environment.

[0039] like Figure 2 As shown, a sealing plate 12 is provided at the lower part of the first shell 1, and two sealing rings 13 connected to the air cathode are provided on the sealing plate 12, so that two air cathodes can be tested at the same time, and an air hole 14 connected to the air cathode is provided on the sealing plate 12;

[0040] The side wall of the first housing 1 is provided with a latch 11 for fixing the air cathode. The latch 11 is an existing conventional part and will not be described in detail in this embodiment.

[0041] The first housing 1 is provided with a first cover 15, and the bottom of the second housing 2 is provided with a pipe joint 29 connected to the first cover 15. The pipe joint 29 penetrates into the first cover 15 and is sealed, so that the gas can smoothly enter the air cathode to be tested along the second housing 2 and the first housing 1.

[0042] like Figure 3 , Figure 4 and Figure 6 As shown, the second housing 2 is connected to the guide member 21 by bolts, a sealing ring 210 is arranged between the second housing 2 and the guide member 21, the guide member 21 is connected to the limiter 22 by bolts, a sealing ring is arranged between the guide member 21 and the limiter 22, the cross section of the limiter 22 is "Z" shaped, a second cover 23 is arranged on the limiter 22, the cross section of the second cover 23 is "L" shaped to match the limiter 22, the bottom of the "L" shape of the second cover 23 extends into the "Z" shape of the limiter 22, so that the second cover 23 can only perform a rotational action. An O-shaped sealing ring 230 is arranged between the limiter 22 and the guide member 21.

[0043] like Figure 5 As shown, a valve stem 24 is provided in the second housing 2, and the top end of the valve stem 24 is connected to the second cover 23 via a thread 26. A guide groove 25 is provided on the side wall of the valve stem 24, and a protrusion extending into the guide groove 25 is provided on the side wall of the guide member 21, so that when the second cover 23 is rotated, the valve stem 24 can only move up and down. When moving up and down, the flow rate of the gas pipeline connecting the second housing 2 and the first housing 1 is adjusted, and then the gas pressure input to the air cathode is adjusted to better simulate the test environment.

[0044] The bottom of the valve stem 24 has a sealing inclined surface 27, the lower part of the second housing 2 is a valve seat 28, the valve seat 28 has an inclined edge that matches the sealing inclined surface 27, and the bottom of the valve seat 28 is connected to a pipe joint 29. When the second cover 23 is rotated to move the valve stem 24 downward, the sealing inclined surface 27 and the inclined edge cooperate when the valve stem 24 moves downward to the lowest point, so that the gas can no longer enter the first housing 1, and when the valve stem 24 moves upward, the greater the upward movement distance, the more air is transported into the first housing 1 through the second housing 2, so that the air pressure is greater.

[0045] The third shell 3 is connected to the second shell 2 via a connecting pipe 32 . A filter is provided in the connecting pipe 32 . The connecting pipe 32 is detachable, and the filter can be replaced conveniently after being detached.

[0046] A vertical baffle 34 is provided in the third shell 3, and the vertical baffle 34 is located between the air inlet and the air outlet of the third shell 3, so that the gas entering through the air compression pump and the air pipe 31 first collides with the vertical baffle 34, and the debris or oil therein is retained at the bottom of the third shell 3, and the pure gas flows upward along the bottom of the vertical baffle 34 and enters the connecting pipe 32.

[0047] A spiral baffle 35 is provided in the third shell 3, and a detachable end cover 33 is provided at the bottom of the third shell 3, which can better intercept oil, water, impurities, etc. in the air. After the gas collides with the spiral baffle 35, the impurities are retained in the end cover 33. The end cover 33 can be unscrewed at regular intervals to clean the filtered impurities.

[0048] When the device is in use, multiple sealing rings can be provided on the sealing plate 12 of the first housing 1, so that multiple air cathodes can be tested at the same time. Pressure regulation can be achieved through the valve stem 24 of the second housing 2, and the pressure applied to the air cathode is 0.02-0.05MPA, that is, the working pressure of the air cathode structure is the normal atmospheric pressure plus 0.02-0.05MPA. During the implementation process, a barometer with a range of 1MPA or 0.6MPA can also be connected to the connection between the pipe joint 29 and the first cover body 15 to cooperate with the valve stem 24 for pressure detection.

[0049] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0051] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An air cathode leak test device, characterized in that: include: a first shell, an air cathode to be tested is installed below the first shell; A second shell body, the second shell body is connected to a gas pipe, and a gas pipeline communicating with the first shell body is provided inside the second shell body; The third shell is used to filter the gas transported by the trachea, and the third shell is located between the second shell and the trachea.

2. An air cathode leak test device according to claim 1, characterized in that: A sealing plate is provided at the lower part of the first shell, at least one sealing ring connected to the air cathode is provided on the sealing plate, and an air hole connected to the air cathode is provided on the sealing plate; The side wall of the first shell is provided with a buckle for fixing the air cathode.

3. The air cathode leak test device according to claim 1, characterized in that: A first cover body is arranged on the first shell, and a pipe joint communicating with the first cover body is arranged at the bottom of the second shell.

4. The air cathode leak test device according to claim 1, characterized in that: The second shell is provided with a guide member, the guide member is provided with a limit member, and the limit member is provided with a second cover body; A valve stem is arranged in the second shell body, and the top end of the valve stem is connected to the second cover body through threads.

5. The air cathode leak test device according to claim 4, characterized in that: The cross section of the limiting member is "Z" shaped, and the cross section of the second cover body is "L" shaped to match the limiting member.

6. The air cathode leak test device according to claim 4, characterized in that: The bottom of the valve stem is provided with a sealing inclined surface, the lower part of the second housing is a valve seat, and the valve seat is provided with an inclined edge matching the sealing inclined surface.

7. The air cathode leak test device according to claim 4, characterized in that: The valve stem side wall is provided with a guide groove, and the guide member side wall is provided with a protrusion extending into the guide groove.

8. The air cathode leak test device according to claim 1, characterized in that: The third shell is connected to the second shell via a connecting pipe, and a filter is arranged in the connecting pipe.

9. The air cathode leak test device according to claim 1, characterized in that: A vertical baffle is arranged in the third shell, and the vertical baffle is located between the air inlet and the air outlet of the third shell.

10. The air cathode leak testing device according to claim 1, characterized in that: A spiral baffle is arranged inside the third shell, and a detachable end cover is arranged at the bottom of the third shell.

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