Expansion external bottle for detecting air tightness

Abstract

The utility model discloses an expansion external connection bottle for detecting air tightness, an external connection bottle (1) is provided with a sealing connecting piece (2), the external connection bottle (1) is internally provided with a detection structure for detecting the air tightness, and the detection structure comprises a water storage bottle (3) arranged in the external connection bottle (1) and a hollow ball (4) located in the water storage bottle (3). The external bottle (1) is connected with an outer pipeline of a to-be-detected device, the external bottle (1) is extruded, the position of the hollow ball (4) in the external bottle (1) is observed, according to the Pascal law, when air is compressed, the pressure is transmitted to water, the air in the bottle body is compressed while the water is pressed into the ball, and the air in the bottle body is compressed. At the moment, some water enters the cavity in the detection device, the drainage volume is not changed, the borne gravity is larger than the borne buoyancy, then the small ball sinks, the sealing performance of the to-be-detected equipment is intact, and if the small ball does not sink, the sealing performance of the to-be-detected equipment is poor.

Description

Technical Field

[0001] This invention belongs to the technical field of sealing testing equipment. Specifically, this invention relates to an expanded external bottle for testing airtightness. Background Technology

[0002] Air tightness testing equipment is a tool used to test and evaluate whether an object or device has good sealing performance. It mainly relies on detecting the gas flow inside and outside the tested object to evaluate its sealing performance. Common techniques include pressure difference testing and leakage detection. Pressure difference testing is used to evaluate air tightness by applying a certain air pressure inside the tested object and then measuring the pressure leakage rate. Leakage detection is used to judge the sealing performance by immersing the tested object in a liquid and then observing whether bubbles are generated.

[0003] A patent application (patent number 202321440730.4, published on June 7, 2023) discloses a portable air spring air tightness testing fixture, including a top cover, a connecting screw, and a piston connector. The connecting screw passes through the air spring under test along its axial direction. The top cover and the piston connector are threaded onto the connecting screw. The top cover and the piston connector are connected to the top and bottom of the air spring under test, respectively. The top cover has an air intake channel that communicates with the interior of the air spring. The piston connector is a stepped shaft. This invention provides a portable air spring air tightness testing fixture with a simple structure, strong versatility, and improved testing efficiency.

[0004] With the development of technology, the technology of air tightness testing equipment is also constantly innovating. Modern air tightness testing equipment is usually equipped with high-precision sensors and advanced data acquisition systems, which can monitor the air tightness performance of the tested object in real time and generate detailed test reports. However, this type of equipment is often tied to large machinery, making it too cumbersome to use.

[0005] Most industrial machinery currently comes with built-in airtightness testing. For example, glass washing machines in glass manufacturing companies are usually equipped with independent cylinders to ensure the circulation of water in the tank. However, when the machine malfunctions and cannot work independently, the cylinders connected to the machine also become unusable. To address this issue, this patent designs a novel external testing device that utilizes pressure difference for convenient testing. It adds an external interface at the bottom, allowing for the installation of independent testing interfaces depending on the object being tested. During connection, the airtightness is determined by observing the state of the floating ball, enabling users to quickly assess the machine's condition. This device does not require connection to the main machine and can selectively test independent areas, better meeting users' specific needs and providing rapid solutions. Summary of the Invention

[0006] The present invention aims to provide an expansion external bottle for testing airtightness that is easy to operate and has a simple structure.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an expanded external bottle for testing airtightness, wherein the external bottle is provided with a sealing connector and an internal testing structure for testing airtightness, wherein the testing structure consists of a water storage bottle disposed inside the external bottle and a hollow sphere located inside the water storage bottle.

[0008] The connecting component is a sealing flange.

[0009] The external bottle is provided with a sealing cap, which includes a cap body and a sealing ring disposed between the cap body and the external bottle.

[0010] A spring-loaded buckle is provided between the bottle cap and the external bottle.

[0011] The external bottle is a flexible plastic bottle.

[0012] The cross-section of the support is U-shaped.

[0013] The hollow sphere has a through hole, the hollow sphere is hollow, the hollow sphere is submerged in water, and the hollow sphere is filled with air.

[0014] The bottle cap is equipped with an observation window.

[0015] The technical effect of this invention is as follows: By connecting the external bottle to the external pipe of the device under test, and by squeezing the external bottle and observing the position of the hollow ball inside the bottle, according to Pascal's law, when air is compressed, the pressure will be transferred to the water. As the water is forced into the ball, it compresses the air in the bottle. At this time, some water enters the cavity of the testing device, but its drainage volume remains unchanged. The gravity it experiences is greater than the buoyancy it experiences, so the ball sinks downwards, indicating that the device under test is well sealed. If the ball does not sink, it indicates that the device under test is poorly sealed. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following:

[0017] Figure 1 This is a schematic diagram of the structure of an expanded external bottle for testing airtightness according to the present invention.

[0018] The following are marked in the diagram: 1. External bottle; 2. Connector; 3. Water storage bottle; 4. Hollow sphere; 5. Bottle cap; 51. Cap body; 52. Sealing ring; 6. Spring buckle; 7. Through hole; 8. Observation window; 9. Support. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0020] Please see Figure 1 An extended external bottle for testing air tightness, wherein the external bottle 1 is provided with a sealing connector 2 and an internal testing structure for testing air tightness, the testing structure being a water storage bottle 3 located inside the external bottle 1 and a hollow ball 4 located inside the water storage bottle 3.

[0021] Because the distance between air molecules is greater than the distance between liquid molecules, air compresses more than water when compressed. According to Pascal's Law, when air is compressed, the pressure is transferred to the water. As water is forced into the sphere, it compresses the air inside the bottle. At this point, some water enters the hollow sphere 4. Due to the greater compressibility of air under pressure, the amount of water entering the hollow sphere 4 increases its overall density under the same pressure, causing it to sink. If the external pressure remains constant, the hollow sphere 4 will remain underwater. Releasing the bottle returns the internal space to its original state. The volume of air above the water surface increases, and the pressure decreases. The compressed air inside the hollow sphere 4 forces the water out, increasing the displaced volume. Since the weight of the hollow sphere 4 is less than the buoyancy, the sphere floats out. Similarly, on the water surface, if the monitored object has poor airtightness and there is air exchange between the bottle and the outside air, the hollow ball 4 will also float up with the change of air pressure during the process. Therefore, the user can first connect the external bottle 1 to the device to be tested. When the external bottle 1 is squeezed, the air inside the external bottle 1 is compressed. If the device to be tested is well sealed, the gas will not leak out. The gas inside the external bottle 1 is compressed, and the hollow ball 4 in the water storage bottle 3 descends. Since there is no air leakage, the hollow ball 4 will float in the water storage bottle 3 and will not move. If the device to be tested leaks air, the gas will leak out when the external bottle 1 is squeezed. During the continuous squeezing process, due to the air leakage, the air pressure inside the external bottle 1 gradually decreases, and the hollow ball 4 will gradually rise. The airtightness of the device to be tested can be judged by observing the hollow ball 4.

[0022] Connector 2 is a sealing flange; it can be directly connected to the pipeline of the equipment to be tested, which is convenient, quick and has good sealing performance.

[0023] The external bottle 1 is provided with a sealing cap 5, which includes a cap body 51 and a sealing ring 52 disposed between the cap body 51 and the external bottle 1; so that the external bottle 1 can be better sealed and prevent the external bottle 1 from leaking.

[0024] A spring latch 6 is provided between the bottle cap 5 and the external bottle 1; it is convenient to use and can compress the sealing ring 52 to improve the sealing ability and prevent air leakage.

[0025] The water storage bottle 3 is tubular, and a support 9 connects the water storage bottle 3 and the external bottle 1. The tubular water storage bottle 3 can restrict the movement direction of the hollow sphere 4, making the rise and fall of the hollow sphere 4 more obvious and easier to observe. At the same time, the support 9 is used to fix the water storage bottle 3 inside the external bottle 1.

[0026] The outer bottle 1 is a flexible plastic bottle; it is easy to squeeze and can also be restored to its original shape, making it convenient for multiple uses.

[0027] The cross-section of the support 9 is U-shaped, which makes it convenient for the user to squeeze the middle of the external bottle 1.

[0028] The hollow ball 4 has a through hole 7. The hollow ball 4 is hollow and submerged in water. The hollow ball 4 is filled with air. The quality of the seal is judged by the movement of the hollow ball 4 in the water storage bottle 3.

[0029] The bottle cap 5 is equipped with an observation window 8, which facilitates the observation of the movement of the internal hollow sphere 4.

[0030] The technical effect of this invention is as follows: By connecting the external bottle 1 to the external pipe of the device to be tested, by squeezing the external bottle 1 and observing the position of the hollow ball 4 inside the external bottle 1, according to Pascal's law, when air is compressed, the pressure will be transferred to water. When water is forced into the ball, it compresses the air in the bottle. At this time, some water enters the cavity of the testing device, but its drainage volume remains unchanged. The gravity it experiences is greater than the buoyancy it experiences, so the ball sinks downwards, indicating that the sealing of the device to be tested is intact. If the ball does not sink, it indicates that the sealing of the device to be tested is poor.

[0031] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An expansion external bottle for testing airtightness, characterized in that: The external bottle (1) is provided with a sealing connector (2), and the external bottle (1) is provided with a detection structure for checking air tightness. The detection structure consists of a water storage bottle (3) set inside the external bottle (1) and a hollow ball (4) located inside the water storage bottle (3).

2. The expanded external bottle for testing airtightness according to claim 1, characterized in that: The connecting component (2) is a sealing flange.

3. The expanded external bottle for testing airtightness according to claim 1, characterized in that: The external bottle (1) is provided with a bottle cap (5), which includes a cap body (51) and a sealing ring (52) disposed between the cap body (51) and the external bottle (1).

4. An expanded external bottle for testing airtightness according to claim 3, characterized in that: A spring latch (6) is provided between the bottle cap (5) and the outer bottle (1).

5. An expanded external bottle for testing airtightness according to claim 1, characterized in that: The water storage bottle (3) is tubular, and a bracket (9) connects the water storage bottle (3) and the external bottle (1).

6. An expanded external bottle for testing airtightness according to claim 1, characterized in that: The external bottle (1) is an elastic plastic bottle.

7. An expanded external bottle for testing airtightness according to claim 5, characterized in that: The cross-section of the support (9) is U-shaped.

8. An expanded external bottle for testing airtightness according to claim 1, characterized in that: The hollow sphere (4) has a through hole (7), the hollow sphere (4) is hollow, the hollow sphere (4) is submerged in water, and the hollow sphere (4) is filled with air.

9. An expanded external bottle for testing airtightness according to claim 3, characterized in that: The bottle cap (5) is provided with an observation window (8).

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