A leak detection device

Abstract

This invention provides a leak detection device for testing containers filled with colored liquids. It includes a vacuum pump unit and a vacuum tank unit connected to the vacuum pump unit. The vacuum tank unit includes a vacuum tank body for creating a vacuum environment. The vacuum tank body also contains the container. The vacuum pump unit extracts air from the vacuum tank body to create a pressure difference between the inside and outside of the container, allowing the device to determine if the container is leaking by observing whether the colored liquid overflows. This design utilizes an automatic control system to maintain a stable negative pressure and pressure holding time within the vacuum tank body to test for leaks, replacing more expensive leak detectors. Furthermore, the device incorporates guide grooves on the fixture to allow for simultaneous testing of multiple products.

Description

Technical Field

[0001] This utility model relates to the field of vacuum testing technology, and in particular to a leak detection device. Background Technology

[0002] In existing technologies, most devices for testing product sealing use molds and leak detectors (or differential pressure gauges) to detect leaks. The testing principle involves placing the product inside the mold, using a cylinder to close the mold, inflating and pressurizing it, and then using the pressure difference to detect leaks. However, this method has several drawbacks. For example, when the product is large, the mold also needs to be large, and combined with the cylinder, the overall device size becomes significant. Furthermore, the use of mold components for testing often results in high costs, increasing overall expenses. Additionally, testing only one product per mold leads to low efficiency. To address these technical issues, a more reliable leak detection device needs to be designed. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a leakage detection device that can simply and efficiently detect the leakage effect of a product and improve the utilization rate of the equipment.

[0004] One embodiment of this utility model provides a leakage detection device for testing container products containing colored liquids. The device includes a vacuum pump unit and a vacuum tank unit connected to the vacuum pump unit. The vacuum tank unit includes a vacuum tank body for creating a vacuum environment. The vacuum tank body is also used to contain the container product. The vacuum pump unit is used to extract air from the vacuum tank body to create a pressure difference between the inside and outside of the container product, thereby determining whether the container product is leaking by observing whether the colored liquid overflows.

[0005] Furthermore, the leak detection device also includes a control unit for controlling the start and stop status of the vacuum pump unit, and the control unit is electrically connected to the vacuum pump unit and the vacuum tank unit.

[0006] Furthermore, the vacuum tank unit also includes a fixture installed inside the vacuum tank body for placing multiple container products, and the fixture has multiple guide grooves for limiting the position of the container products.

[0007] Furthermore, the vacuum tank body includes a hemispherical cover plate and a base, with the cover plate mounted on the base and the fixture mounted in the base.

[0008] Furthermore, the vacuum tank unit also includes a support component, which is fitted onto the vacuum tank body.

[0009] Furthermore, the support is equipped with multiple fastening clips, which connect the vacuum tank body to the support.

[0010] Furthermore, the vacuum pump unit includes a vacuum pump body and a soundproof cover, with the soundproof cover covering the vacuum pump body.

[0011] Furthermore, the leak detection device also includes a connecting pipe installed next to the vacuum pump body, connecting the vacuum tank body to the vacuum pump body.

[0012] Furthermore, a pressure regulating valve is provided on the connecting pipeline. The pressure regulating valve is electrically connected to the control unit and is installed at one end of the connecting pipeline near the vacuum pump body.

[0013] Furthermore, the control unit includes a touchscreen and multiple indicator lights, which are located on both sides of the touchscreen.

[0014] This utility model provides a leak detection device, including a vacuum tank unit, a vacuum pump unit, a control unit, and connecting pipelines. The vacuum tank unit includes a vacuum tank body and a fixture. The fixture has guide grooves that can limit the position of the container product, increasing the number of products that can be placed on the fixture and improving the utilization rate and working efficiency of the equipment. The vacuum pump unit includes a vacuum pump body, which is connected to the vacuum tank body through connecting pipelines. The control unit controls the vacuum pump body to extract air from the vacuum tank body to create a negative pressure condition, thereby creating a pressure difference between the inside and outside of the container product. Leakage is determined by observing whether colored liquid overflows. This design, combined with an automatic control method, controls the stable negative pressure and pressure holding time within the vacuum tank body to test the product's leakage, replacing the more expensive leak detectors and enabling simultaneous testing of multiple products. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a leak detection device provided in a preferred embodiment of the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the vacuum tank unit of the provided leak detection device.

[0018] Figure 3 for Figure 1 A schematic diagram of the fixture for the provided leak detection device.

[0019] Figure 4 for Figure 1A schematic diagram of the vacuum pump unit and control unit of the provided leak detection device.

[0020] Figure 5 for Figure 1 A schematic diagram of the connection piping for the provided leak detection device.

[0021] In the diagram: Vacuum tank unit 1; Vacuum tank body 11; Cover plate 111; Base 112; Sealing ring 113; Fixture 12; Upper plate 121; Lower plate 122; Guide groove 123; Fastening clamp 13; Support component 14; Support leg 15; Vacuum pump unit 2; Vacuum pump body 21; Soundproof cover 22; Control unit 3; Housing 31; Touch screen 32; Indicator light 33; USB interface 34; Start / stop button 35; Switch 36; Connecting pipeline 4; Pressure gauge 41; Pressure regulating valve 42; Inlet valve 43; Exhaust valve 44; Container product 5. Detailed Implementation

[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The main purpose of this application is to provide a leak detection device with a more novel structure to solve the problems of low equipment utilization and large size of existing detection devices.

[0024] Please refer to the following first. Figure 1 and Figure 5 One aspect of this application provides a leak detection device that can be used in testing bottled products.

[0025] like Figure 1 As shown, one aspect of this application provides a leakage detection device for testing a container product 5 containing a colored liquid, including a vacuum tank unit 1, a vacuum pump unit 2, and a control unit 3. The vacuum tank unit 1 is connected to the vacuum pump unit 2, and the control unit 3 is electrically connected to both the vacuum pump unit 2 and the vacuum tank unit 1.

[0026] like Figure 2As shown, specifically, the vacuum tank unit 1 includes a vacuum tank body 11 and a fixture 12. The vacuum tank body 11 is used to create a vacuum environment, and the fixture 12 is used to place the container product 5. The fixture 12 is installed inside the vacuum tank body 11, so the vacuum tank body 11 is also used to contain the container product 5. The vacuum tank body 11 includes a cover plate 111 and a base 112. Both the cover plate 111 and the base 112 are hemispherical covers. The cover plate 111 is installed on the base 112 to form a spherical tank. A sealing ring 113 is provided between the cover plate 111 and the base 112. The sealing ring 113 is used to enhance the sealing of the tank when the cover plate 111 and the base 112 are closed, so as to ensure that the vacuum tank body 11 can maintain a certain pressure. Figure 3 As shown, the fixture 12 is preferably frustum-shaped, including an upper plate 121 and a lower plate 122. The upper plate 121 is used to hold the container product 5, and the lower plate 122 is used to keep the upper plate 121 horizontal, facilitating the placement of the container product 5 on the upper plate 121. Both the upper plate 121 and the lower plate 122 are circular plates, and the diameter of the upper plate 121 is larger than the diameter of the lower plate 122. More specifically, the upper plate 121 has multiple guide grooves 123 on the side opposite to the lower plate 122. The guide grooves 123 are used to limit the container product 5 to prevent the product from sliding during testing. Multiple guide grooves 123 can hold multiple container products 5, so that the testing device can test multiple products at the same time, thereby improving the utilization rate and testing efficiency of the equipment.

[0027] Specifically, the vacuum tank unit 1 also includes multiple fastening clamps 13, support members 14, and multiple support legs 15. The support member 14 is an annular plate fitted over the vacuum tank body 11 to support it. The fastening clamps 13 are used to strengthen the connection between the cover plate 111 and the base 112, as well as the tightness between the vacuum tank body 11 and the support member 14. Preferably, four clamps are evenly distributed on the support member 14, with one end connected to the vacuum tank body 11, thus securing the vacuum tank body 11 to the support member 14. The support legs 15 are also preferably four, installed on the side of the support member 14 facing away from the fastening clamps 13, providing stable support for the vacuum tank body 11 on the ground and maintaining the balance between the vacuum tank body 11 and the fixture 12.

[0028] like Figure 4 As shown, specifically, the vacuum pump unit 2 is used to extract air from the vacuum tank body 11 to create a pressure difference between the inside and outside of the container product 5, thereby determining whether the container product is leaking by observing whether the colored liquid overflows. The vacuum pump unit 2 includes a vacuum pump body 21 and a soundproof cover 22. The vacuum pump body 21 is mounted on the housing 41 of the control unit 4 and is controlled by the control unit 4. The soundproof cover 22 is used to insulate the vacuum pump body 21 from sound and is placed over the vacuum pump body 21.

[0029] Specifically, the control unit 3 is used to control the start and stop status of the vacuum pump unit 21, and to set the pressure value and holding time required for the test, thereby testing the leakage of the container product 5 under a certain pressure value and time. The control unit 3 includes a housing 31, a touch screen 32, an indicator light 33, a USB interface 34, a start / stop button 35, and a switch 36. The housing 31 is a quadrangular prism, with the vacuum pump body 21 mounted on the top surface of the housing 31. The touch screen 32, indicator light 33, USB interface 34, start / stop button 35, and switch 36 are all mounted on the housing 31; the touch screen 32, indicator light 33, USB interface 34, and start / stop button 35 are mounted on the same side of the housing 31, and the indicator light 33, USB interface 34, and start / stop button 35 are mounted around the touch screen 32. The indicator light 33 is used to indicate whether the holding time of the vacuum tank body 21 has ended, the start / stop button 35 is used to control the start and stop of the vacuum pump body 31, and the switch 36 controls the main power supply of the control unit 3.

[0030] like Figure 5 As shown, specifically, the connecting pipe 4 connects the vacuum pump body 21 and the vacuum tank body 11, and is installed beside the vacuum pump body 21 and on the housing 41 of the control unit 3. The connecting pipe 4 is equipped with a pressure gauge 41, a pressure regulating valve 42, and an air inlet valve 43. The pressure gauge 41 detects and displays the pressure value of the vacuum tank body 11, the pressure regulating valve 42 adjusts the pressure between the connecting pipe 4 and the vacuum tank body 11, and the air inlet valve 43 opens or closes the connecting pipe 4. The pressure regulating valve 42 is installed at one end of the connecting pipe 4 near the vacuum pump body 31, the pressure gauge 41 is installed at one end near the vacuum tank body 11, and the air inlet valve 43 is installed between the pressure regulating valve 42 and the pressure gauge 41. The exhaust valve 44 is installed at the other end of the vacuum tank body 11 and is used to release air from the vacuum tank body 11 after testing.

[0031] The above-mentioned leakage detection device achieves leakage detection as follows: First, colored liquid is filled inside the container product 5 to be tested, and the test pressure range and holding time are set on the touch screen 32 of the control unit 3 according to the customer's test requirements; then, the multiple fastening clamps 13 and the cover plate 111 of the vacuum tank unit 1 are opened one after another, and multiple container products 5 containing colored liquid are placed on the fixture 12, and then the cover plate 111 and the fastening clamps 13 are closed; the start button of the control unit 3 is pressed to start the vacuum pump body 21, and the vacuum pump body 21 begins to extract air from the vacuum tank body 11. The pressure continues to drop until it reaches the set pressure value. Once the set pressure value is reached, the control unit 3 starts timing until the preset pressure holding time is reached. During the preset pressure holding time, the vacuum tank body 11 maintains a constant set pressure. After the preset pressure holding time is reached, the indicator light 33 of the control unit 3 illuminates, and the control unit 3 controls the exhaust valve 44 of the connecting pipe 4 to open, releasing air from the vacuum tank body 11. Finally, the fastening clamp 13 and the cover plate 111 are manually opened, and the container product 5 is removed. The surface of the container product 5 is checked for any colored liquid overflowing. If no colored liquid overflows, it indicates that the container product 5 is well-sealed. In a further embodiment, the container product 5 is preferably a bottled product.

[0032] In summary, the leakage detection device provided by the above embodiments of this utility model includes a vacuum tank unit 1, a vacuum pump unit 2, a control unit 3, and a connecting pipe 4. The vacuum tank unit 1 includes a vacuum tank body 11 and a fixture 12. The fixture 12 is provided with a guide groove 123, which can limit the container product 5, maintain the container product 5 horizontally on the fixture 12, and increase the number of products placed on the fixture 12, thereby improving the utilization rate and working efficiency of the equipment. The vacuum pump unit 2 includes a vacuum pump body 21, which is connected to the vacuum tank body 11 through the connecting pipe 4. The control unit 3 controls the vacuum pump body 21 to draw air from the vacuum tank body 11 to form a negative pressure condition, so as to create a pressure difference between the inside and outside of the container product 5. The leakage of the container product 5 is judged by observing whether the colored liquid overflows. This design uses an automatic control method to control the stable negative pressure and pressure holding time in the vacuum tank body 11 to test the leakage of the product, thereby replacing the more expensive leakage instrument and achieving the effect of simultaneously testing multiple products.

[0033] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A leak detection device for testing container products containing colored liquids, characterized in that, The device includes a vacuum pump unit and a vacuum tank unit connected to the vacuum pump unit. The vacuum tank unit includes a vacuum tank body for creating a vacuum environment. The vacuum tank body is also used to contain a container product. The vacuum pump unit is used to extract air from the vacuum tank body to create a pressure difference between the inside and outside of the container product, thereby determining whether the container product is leaking by observing whether colored liquid overflows.

2. The leakage detection device as described in claim 1, characterized in that, The leak detection device also includes a control unit for controlling the start and stop status of the vacuum pump unit, and the control unit is electrically connected to the vacuum pump unit and the vacuum tank unit.

3. The leakage detection device as described in claim 1, characterized in that, The vacuum tank unit also includes a fixture installed inside the vacuum tank body for placing multiple container products, and the fixture has multiple guide grooves for limiting the position of the container products.

4. The leakage detection device as described in claim 3, characterized in that, The vacuum tank body includes a hemispherical cover plate and a base, the cover plate being mounted on the base and the fixture being mounted in the base.

5. The leakage detection device as described in claim 1, characterized in that, The vacuum tank unit also includes a support member, which is sleeved on the vacuum tank body.

6. The leakage detection device as described in claim 5, characterized in that, The support member is provided with multiple fastening clips, which connect the vacuum tank body to the support member.

7. The leakage detection device as described in claim 2, characterized in that, The vacuum pump unit includes a vacuum pump body and a soundproof cover, which is installed outside the vacuum pump body.

8. The leakage detection device as described in claim 7, characterized in that, The leak detection device also includes a connecting pipe, which is installed next to the vacuum pump body and connects the vacuum tank body to the vacuum pump body.

9. The leakage detection device as described in claim 8, characterized in that, A pressure regulating valve is provided on the connecting pipeline. The pressure regulating valve is electrically connected to the control unit and is installed at one end of the connecting pipeline near the vacuum pump body.

10. The leakage detection device as described in claim 2, characterized in that, The control unit includes a touch screen and multiple indicator lights, which are located on both sides of the touch screen.

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