Air tightness testing equipment

Abstract

The utility model provides an air tightness test equipment, including outer box, inner box, gas drive booster pump, gas circuit distributor, the outer box is provided with test slot, the inner box is provided in the test slot, the gas drive booster pump is provided in the box body, the gas circuit distributor is provided on the box body, the gas circuit distributor is provided on the box body, the gas circuit distributor is provided on the box body. The gas path distributor is arranged on the inner box, the gas-driven booster pump is connected with a pipeline of the gas path distributor, a cylinder and a reversing valve are further arranged on the outer box, the reversing valve is connected with a pipeline of the cylinder, and the inner box moves up and down relative to the outer box under the movement of the cylinder. The gas circuit distributor and the pressure gauge are added for monitoring, multiple groups of products can be tested at the same time, and the testing efficiency is improved. The air cylinder drives the inner box to ascend and descend, hands do not need to stretch into an ice-cold water pool, and the testing experience of testers is improved. The structure is small, a cart structure is adopted, moving is convenient, too much space is not occupied, and rapid carrying and on-site deployment are supported.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing, specifically to an airtightness testing device. Background Technology

[0002] Before leaving the factory, products need to undergo airtightness testing to verify whether there is a risk of leakage. Generally, airtightness testing involves placing the product in a water tank and applying air pressure to observe whether bubbles appear. If the temperature is low, testers will experience a chilling sensation when their hands are immersed in the water. Furthermore, existing airtightness testing equipment is often bulky and fixed in place, taking up space and failing to meet the needs of multi-site testing; it can only test one workpiece at a time, resulting in low testing efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide an airtightness testing device that solves the technical problems mentioned in the background art, such as the large footprint, inability to move, low testing efficiency, and poor experience for testing personnel.

[0004] To achieve the above objectives, this utility model provides an airtightness testing device, including an outer casing, an inner casing, a pneumatic booster pump, and a pneumatic distributor. The outer casing is provided with a test slot, the inner casing is disposed within the test slot, the pneumatic booster pump is disposed within the casing, and the pneumatic distributor is disposed on the casing. The pneumatic booster pump is connected to the pneumatic distributor via a pipeline. The outer casing is also provided with a cylinder and a reversing valve, the reversing valve being connected to the cylinder via a pipeline. The inner casing moves up and down relative to the outer casing under the movement of the cylinder.

[0005] Furthermore, the gas distributor is equipped with a pressure indicator.

[0006] Furthermore, a protective panel is provided inside the inner box.

[0007] Furthermore, a drain valve is provided on the outer casing, and the drain valve is connected to the test tank through a pipeline.

[0008] Furthermore, the bottom of the outer casing is equipped with directional wheels and omnidirectional wheels.

[0009] Compared with existing technologies, this invention improves testing efficiency by adding an air distributor and pressure gauge monitoring, enabling simultaneous testing of multiple product groups. The inner chamber is raised and lowered via a cylinder, eliminating the need for testers to dip their hands into the cold water, thus enhancing the testing experience. Its compact, trolley-style design facilitates movement without taking up too much space, supporting rapid transport and on-site deployment. Attached Figure Description

[0010] Figure 1 This is a side view of the present invention;

[0011] Figure 2 for Figure 1 Exploded view in the middle;

[0012] Figure 3 This is a side view of the present invention from another angle;

[0013] In the diagram, 1. Directional wheel; 2. Handle; 3. Door panel; 4. Hinge; 5. Outer casing; 6. Cylinder; 7. Throttle valve; 8. Inner casing; 9. First pipeline; 10. Second pipeline; 11. Drain valve; 12. Caster wheel; 13. Air-driven booster pump; 14. Fastener; 15. Protective plate; 16. Inlet pneumatic connector; 17. First outlet pneumatic connector; 18. Reversing valve; 19. Adapter elbow; 20. Air distributor; 21. Inlet control valve; 22. Outlet control valve; 23. Pressure indicator; 24. Inlet port; 25. Outlet port; 26. Test slot; 27. Protrusion; 28. Side wing; 29. ​​Second outlet pneumatic connector; 30. Silencer. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, terms such as "horizontal" and "vertical" do not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings.

[0021] like Figure 1-3 As shown, the airtightness testing device of this utility model includes an outer casing 5 and an inner casing 8. The outer casing 5 has a cabinet-like structure and can be integrally molded or assembled. In this embodiment, it is assembled. The outer casing 5 has protrusions 27 on both sides and a movable door panel 3 at the front. The door panel 3 is connected to the side panels via hinges 4, and a handle 2 is provided on the door panel 3. The door panel 3 facilitates the arrangement of pipelines within the outer casing 5. A downwardly recessed test groove 26 is provided at the upper end of the outer casing 5, which is used to hold clean water for air pressure testing. The inner casing 8 is placed in the test groove 26. The outer casing 8 is slightly smaller than the test groove 26. A drainage hole is provided at the bottom of the inner casing 8, and side wings 28 that cooperate with the protrusions 27 of the outer casing 5 are provided on both sides. The inner casing 8 is used to place the product to be tested. To prevent damage to the product, preferably, a protective plate 15 is provided at the bottom of the inner casing 8. The protective plate 15 is made of a non-metallic material, such as PP board. The protective plate 15 is fixed to the bottom of the inner box 8 by fasteners 14, and the protective plate 15 is provided with equally spaced waist-shaped water filter grooves.

[0022] An air-driven booster pump 13 is installed inside the outer casing 5. The air-driven booster pump 13 has an inlet port 24 and an outlet port 25. The inlet port 24 is used to connect to an air source, and the outlet port 25 is connected to the inlet of the air distributor 20. The air distributor 20 is located on the upper surface of the outer casing 5, adjacent to the test slot 26. The air distributor 20 has one inlet and multiple outlets. The inlet is equipped with an inlet control valve 21, and the outlets are equipped with outlet control valves 22. The inlet control valve 21 is connected to the outlet port 25 of the air-driven booster pump 13 through a pipeline, and the outlet control valve 22 is connected to the product under test through a test hose. In a preferred embodiment, the air distributor 20 is also equipped with a pressure indicator 23, which is connected to the end outlet of the air distributor 20 through an adapter elbow 19. The pressure indicator 23 can be a digital pressure indicator element such as a pressure gauge or pressure gauge, which facilitates clear and intuitive feedback of the air pressure value applied to the product under test.

[0023] The outer casing 5 is also equipped with a cylinder 6 and a reversing valve 18. The cylinder 6 is fixed to the lower part of the protrusion 27 by screws. The push rod of the cylinder 6 passes through the through hole of the protrusion 27. When the cylinder 6 moves up and down, the push rod moves up and down accordingly, which can lift the inner casing 8. The reversing valve 18 is located on the upper end face of the outer casing 5, adjacent to the air distributor 20. The reversing valve 18 is a three-position four-way reversing valve, including one air inlet and three air outlets. An air inlet pneumatic connector 16 is provided on the air inlet, and a silencer 30 is provided on the outlet opposite to the air inlet pneumatic connector 16. The silencer 30 helps to reduce noise during operation. In addition, the air outlets on both sides are respectively provided with a first air outlet pneumatic connector 17 and a second air outlet pneumatic connector 29. The intake pneumatic connector 16 is connected to the air source through a pipeline. The first outlet pneumatic connector 17 is connected to the throttle valve 7 above the cylinders 6 on both sides through a three-way connector (not shown) and the first pipeline 9. The second outlet pneumatic connector 29 is connected to the throttle valve 7 below the cylinders 6 on both sides through a three-way connector (not shown) and the second pipeline 10.

[0024] The operating principle of this utility model is as follows: First, inject sufficient clean water into the test tank 26 of the outer casing 5. After connecting the product to be tested to the outlet control valve 22 of the air distributor 20, place it on the protective plate 15 of the inner casing 8. Place the inner casing 8 into the test tank 26, so that the side wings 28 of the inner casing 8 are placed on the protrusion 27 of the outer casing 5. Connect a three-way connector to the compressed air source to divide the air path into two paths. The first air path is connected to the air inlet of the reversing valve 18 through one outlet of the three-way connector. The gas comes out from the left and right outlets of the reversing valve 18. The air path is switched by operating the handle of the reversing valve 18. When the air inlet is connected to the first outlet and the air inlet is closed to the second outlet, the gas enters the throttle valve 7 above the cylinder 6 through the first outlet pneumatic connector 17, controlling the cylinder 6 to descend. When the push rod of the cylinder 6 moves downward, it drives the inner casing 8 to move downward until the product to be tested in the inner casing 8 is completely immersed in clean water. When the air inlet and the first air outlet are closed, and the air inlet and the second air outlet are connected, the gas enters the throttle valve 7 below the cylinder 6 through the second air outlet pneumatic connector 29, thereby controlling the cylinder 6 to rise. The push rod on the cylinder 6 moves upward, pushing the inner box 8 to gradually move upward until the product inside the inner box 8 is completely out of the water surface. When the air inlet, the first air outlet, and the second air outlet are all closed, the cylinder 6 stops moving.

[0025] The second gas path connects to the inlet port 24 of the air-driven booster pump 13 via one outlet of a three-way connector. After being pressurized, the gas is discharged from the outlet port 25 and then flows through a pipeline to the inlet control valve 21. When the product in the inner chamber 8 is immersed in water, the inlet control valve 21 is opened, and the high-pressure gas then enters the gas distributor 20. Opening the outlet control valve 22 on the branch of the gas distributor allows for simultaneous pressure testing of multiple product groups.

[0026] The outer casing 5 can also be equipped with a drain valve 11. The drain valve 11 is connected to the bottom of the test tank 26 through a pipeline. When the test is completed, the drain valve 11 can be opened to drain the water in the test tank 26.

[0027] One aspect of this utility model is its mobility. Specifically, the bottom of the outer casing 5 is provided with directional wheels 1 and universal wheels 12, which enable the utility model to move horizontally 360 degrees to meet the pressure testing requirements of multiple sites.

[0028] The basic principles and advantages of this utility model have been described above. For those skilled in the art, the above embodiments are merely illustrative of the technical solutions of this utility model and not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some or all of the technical features by reading this specification. Any obvious substitutions are within the protection scope of this utility model without departing from its concept.

Claims

1. An airtightness testing device, characterized in that, The device includes an outer casing (5), an inner casing (8), an air-driven booster pump (13), and an air distributor (20). The outer casing (5) is provided with a test slot (26), the inner casing (8) is located in the test slot (26), the air-driven booster pump (13) is located in the outer casing (5), and the air distributor (20) is located on the outer casing (5). The air-driven booster pump (13) is connected to the air distributor (20) via a pipeline. The outer casing (5) is also provided with a cylinder (6) and a reversing valve (18). The reversing valve (18) is connected to the cylinder (6) via a pipeline. The inner casing (8) moves up and down relative to the outer casing (5) under the movement of the cylinder (6).

2. The airtightness testing device according to claim 1, characterized in that, The gas distributor (20) is equipped with a pressure indicator (23).

3. The airtightness testing device according to claim 2, characterized in that, The inner box (8) is equipped with a protective plate (15).

4. The airtightness testing device according to claim 3, characterized in that, The outer casing (5) is equipped with a drain valve (11), which is connected to the test tank (26) through a pipeline.

5. An airtightness testing device according to claims 1-4, characterized in that, The bottom of the outer casing (1) is provided with directional wheels (1) and omnidirectional wheels (12).

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