Multi-channel air tightness detector

Abstract

The utility model discloses a multichannel air tightness detector which comprises a cabinet body, a storage cavity is arranged at the lower end of the cabinet body, a controller electrically connected with an external power supply is arranged in the storage cavity, and a test cavity is arranged on the cabinet body and above the storage cavity; the cabinet body is provided with a test cavity, the test cavity is provided with a product placing structure which is used for placing a plurality of products to be tested in the product placing structure in a sealed manner, and the cabinet body is also provided with an automatic test structure which is provided with a plurality of channels which are connected with corresponding cavities of the product placing structure so as to synchronously carry out air tightness tests on the products to be tested, the product placing structure and the automatic testing structure are electrically connected with the controller. The air tightness testing device has the advantage that the air tightness testing can be synchronously carried out on a plurality of products so as to improve the detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of airtightness detection, and more specifically, to a multi-channel airtightness detector. Background Art

[0002] At present, in the manufacturing process of industrial products such as security lighting, communication digital devices, and household appliances, in order to ensure product quality, usually before leaving the factory, in addition to functional testing, airtightness testing also needs to be carried out. Currently, for the airtightness testing of industrial products, especially for industrial products without test channels, such as cameras, mobile phones, motors, etc., it is common to use an airtightness detection device with a closed cavity to carry out the test. Although this airtightness detection device can meet the airtightness testing requirements of industrial products, it still has the application problem that it cannot synchronously test multiple products, resulting in low testing efficiency and being difficult to meet the actual application requirements.

[0003] How to solve the above problems has become an urgent technical problem to be solved. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a multi-channel airtightness detector that can simultaneously perform airtightness tests on multiple products synchronously to improve the detection efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A multi-channel airtightness detector includes a cabinet body. A storage cavity is provided at the lower end of the cabinet body, and a controller electrically connected to an external power source is installed inside the storage cavity. A test cavity is opened above the storage cavity on the cabinet body; a product placement structure for hermetically placing a plurality of products to be tested inside is provided on the test cavity, and an automatic test structure with multiple channels connected to the corresponding cavities of the product placement structure to simultaneously perform airtightness tests on each product to be tested is also provided on the cabinet body, wherein the product placement structure and the automatic test structure are both electrically connected to the controller.

[0007] Preferably, the product placement structure includes support rods provided at four ends of the test cavity. A base capable of sliding relative to the support rods is provided on the support rods through a T-shaped bushing. A pressing cylinder installed above the test cavity on the cabinet body and electrically connected to the controller is also included, and the output shaft of the pressing cylinder is connected to the top of the base through a floating joint to drive the base to move. A product airtight storage assembly for hermetically and spacedly placing a plurality of products to be tested is further provided at the bottom of the base.

[0008] Preferably, the product placement structure further includes a start button, an emergency stop button, and a stop button that are provided at one end of the cabinet near the outside of the test chamber and are electrically connected to the controller for controlling the operation of the pressing cylinder. Among them, the automatic test structure is connected to the product airtight storage assembly.

[0009] Preferably, the product airtight storage assembly includes a storage base provided at the bottom of the test chamber. A plurality of storage bins for storing corresponding products to be tested are spaced apart on the storage base. A closing seat is further provided at the bottom of the base, which can be hermetically attached to the top of the storage base to separate each storage bin into a sealed cavity. Among them, the automatic test structure is connected to the storage bin.

[0010] Preferably, the automatic test structure includes a gas-liquid separator provided at one side end of the placement chamber. The inlet end of the gas-liquid separator is connected to an external gas source through an air inlet pipe extending outside the cabinet. The outlet end of the gas-liquid separator is connected to a supply pipe, and the end of the supply pipe away from the gas-liquid separator has multiple channels respectively communicating with the corresponding storage bins. A pressure regulating valve for adjusting the supply air pressure is provided on the supply pipe, and the pressure regulating valve is installed on the outer wall of the cabinet above the test chamber on one side. An electric valve that is electrically connected to the controller for controlling the opening and closing of the channel of the supply pipe is also provided at one end of the supply pipe communicating with the corresponding storage bin near the outlet of the pressure regulating valve.

[0011] Preferably, the automatic test structure further includes a pressure sensor provided in each storage bin and electrically connected to the controller for collecting the internal pressure information of the storage bin to realize the airtightness test of multiple products synchronously. A test control component that is electrically connected to the controller for controlling the test operation and displaying the test results is also provided on the cabinet above the test chamber.

[0012] Preferably, the test control component includes a test start button and a test stop button provided on the cabinet above the test chamber for controlling the operation of the electric valve and the pressure sensor. It also includes a touch screen provided on the cabinet above the test start button for displaying the test result information of the corresponding storage bin. A qualified indicator light and an unqualified indicator light for indicating the qualified status of the product test are also provided on the cabinet below the test start button. Among them, the test start button, the test stop button, the touch screen, the qualified indicator light, and the unqualified indicator light are all electrically connected to the controller.

[0013] Preferably, a USB connection port electrically connected to the controller is provided on the cabinet body between the test start button and the test stop button. The controller is connected to an external storage device through the USB connection port, and the test data in the controller is transferred to the external storage device by operating the touch screen.

[0014] Preferably, safety light curtains electrically connected to the controller are provided at both outer ends of the test chamber on the cabinet body to collect information on the entry of personnel's limbs into the test chamber and automatically stop the test work through the controller.

[0015] Preferably, walking wheels are provided at the bottom of the cabinet body to facilitate the tester to move the cabinet body to a designated place; a drawer for storing external hardware tools is provided on the cabinet body between the storage chamber and the test chamber to facilitate the tester to take the tools for assisting in the airtightness test operation of industrial products.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In the present utility model, when it is necessary to perform airtightness detection on industrial products without test channels, the cabinet body together with the storage chamber, the controller, the test chamber, the product placement structure, and the automatic test structure are moved to a designated place. Then, each industrial product is placed in the corresponding cavity of the product placement structure respectively. Next, the controller starts the closing member of the product placement structure to confine each industrial product airtightly on the product placement structure. Then, the controller starts the automatic test structure to work to deliver the gas source with a predetermined pressure to the corresponding cavities of the product placement structure respectively to perform positive-pressure airtightness test. When there is air leakage in the industrial product, the gas in the cavity will enter the interior of the industrial product due to the pressure difference, resulting in a decrease in the gas pressure in the cavity. During this process, the pressure acquisition member of the automatic test structure collects the pressure information in the corresponding cavity of the product placement structure in real time and synchronously transmits it to the controller for data processing. Since the pressure decreases within a predetermined time period, it is determined that there is an air leakage problem in the industrial product, and it is a non-conforming product. In addition, when there is no air leakage in the industrial product, the pressure acquisition member of the automatic test structure collects the pressure information in the corresponding cavity of the product placement structure in real time and synchronously transmits it to the controller for data processing. Since the pressure remains unchanged within a predetermined time period, it is determined that there is no air leakage problem in the industrial product, and it is a qualified product. Thus, the airtightness test results of each industrial product are obtained. At the same time, the controller synchronously transmits the airtightness test results to the display member of the automatic test structure for display for the tester to view and process in a timely manner, thereby realizing the synchronous test of the airtightness of multiple industrial products and effectively improving the detection efficiency. Therefore, the present utility model has the advantage of being able to simultaneously perform airtightness tests on multiple products synchronously to improve the detection efficiency. Brief Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of a multi-channel airtightness detector according to the present utility model;

[0020] Figure 2 It is a circuit connection block diagram of a multi-channel airtightness detector according to the present utility model.

[0021] Description of the reference numerals: 1, cabinet body; 2, storage cavity; 3, controller; 4, test cavity; 5, product placement structure, 51, support rod, 52, T-shaped bushing, 53, base, 54, downward pressing air cylinder, 55, floating joint, 56, product airtight storage assembly, 100, storage base, 200, storage bin, 300, closing seat, 57, start button, 58, emergency stop button, 59, stop button, 6, automatic test structure, 61, air-liquid separator, 62, intake pipe, 63, supply pipe, 64, pressure regulating valve, 65, electric valve, 66, pressure sensor, 67, test control assembly, 500, test start button, 600, test stop button, 700, touch screen, 800, qualified indicator light, 900, unqualified indicator light, 7, USB connection port, 8, safety light curtain, 9, walking wheel, 10, drawer. Detailed Embodiments

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Refer to Figures 1 to 2As shown in the figure, a multi-channel airtightness detector includes a cabinet 1. A storage cavity 2 is provided at the lower end of the cabinet 1, and a controller 3 electrically connected to an external power source is installed inside the storage cavity 2. A test cavity 4 is opened above the storage cavity 2 on the cabinet 1; a product placement structure 5 for placing several products to be tested airtightly inside is provided on the test cavity 4. An automatic test structure 6 with multiple channels connected to the corresponding cavities of the product placement structure 5 to synchronously perform airtightness tests on each product to be tested is also provided on the cabinet 1. Among them, the product placement structure 5 and the automatic test structure 6 are both electrically connected to the controller 3. During use, when it is necessary to perform airtightness detection on industrial products without test channels, the cabinet 1 together with the storage cavity 2, the controller 3, the test cavity 4, the product placement structure 5, and the automatic test structure 6 are moved to a designated location. Then the corresponding industrial products are respectively placed in the corresponding cavities of the product placement structure 5. Then the closing member of the product placement structure 5 is started by the controller 3 to work to confine each industrial product airtightly on the product placement structure 5. Then the automatic test structure 6 is started by the controller 3 to work to respectively deliver a gas source with a predetermined pressure to the corresponding cavities of the product placement structure 5 to perform positive pressure airtightness tests on the industrial products. When there is air leakage in the industrial product, the gas in the cavity will enter the interior of the industrial product due to the pressure difference, resulting in a decrease in the gas pressure in the cavity. During this process, the pressure information in the corresponding cavity of the product placement structure 5 is collected in real time by the pressure acquisition member of the automatic test structure 6 and synchronously transmitted to the controller 3 for data processing. Since the pressure decreases within a predetermined time period, it is determined that the industrial product has air leakage and it is a non-conforming product. In addition, when there is no air leakage in the industrial product, the pressure information in the corresponding cavity of the product placement structure 5 is collected in real time by the pressure acquisition member of the automatic test structure 6 and synchronously transmitted to the controller 3 for data processing. Since the pressure remains unchanged within a predetermined time period, it is determined that the industrial product has no air leakage and it is a conforming product. Thus, the airtightness test results of each industrial product are obtained. At the same time, the controller 3 synchronously transmits the airtightness test results to the display member of the automatic test structure 6 for display for the testers to view and process in a timely manner, thereby realizing the synchronous test of the airtightness of multiple industrial products and effectively improving the detection efficiency.

[0024] In this embodiment, the product placement structure 5 includes support rods 51 provided at four ends of the test chamber 4. On the support rods 51, a base 53 capable of sliding relative to the support rods 51 is provided through a T-shaped bushing 52. It further includes a downward pressing cylinder 54 provided on the cabinet 1 above the test chamber 4 and electrically connected to the controller 3, and the output shaft of the downward pressing cylinder 54 is connected to the top of the base 53 through a floating joint 55 to drive the base 53 to move. A product airtight storage assembly 56 for placing a plurality of products to be tested in an airtight and spaced manner is further provided at the bottom of the base 53. The product placement structure 5 further includes a start button 57, an emergency stop button 58, and a stop button 59 provided on the cabinet 1 near one end outside the test chamber 4 and electrically connected to the controller 3 for controlling the operation of the downward pressing cylinder 54. Among them, the automatic test structure 6 is connected to the product airtight storage assembly 56. The product airtight storage assembly 56 includes a storage base 100 provided at the bottom of the test chamber 4. A plurality of storage bins 200 for storing corresponding products to be tested are spaced apart on the storage base 100. A sealing seat 300 capable of tightly fitting with the top of the storage base 100 to separate each storage bin 200 into an airtight cavity is further provided at the bottom of the base 53. Among them, the automatic test structure 6 is connected to the storage bin 200. During use, when performing airtightness tests on industrial products, the corresponding industrial products are respectively placed in the storage bins 200 of the product airtight storage assembly 56 of the product placement structure 5. Then, the start button 57 is operated to start the downward pressing cylinder 54 to work through the controller 3. The movable shaft of the downward pressing cylinder 54 drives the floating joint 55, together with the base 53, the T-shaped bushing 52, and the sealing seat 300, to move along the support rod 51 towards the storage base 100 until the sealing seat 300 is tightly fitted with the storage base 100 to make the storage bin 200 in an airtight state. Then, the stop button 59 or the emergency stop button 58 is operated to stop the downward pressing cylinder 54 from working. Thereby, the corresponding industrial products are hermetically limited in the corresponding storage bins 200. Then, the automatic test structure 6 is started to work through the controller 3 to convey gas at a predetermined pressure to the storage bins 200 to automatically perform airtightness tests on multiple industrial products simultaneously, which can effectively improve the detection efficiency.

[0025] In this embodiment, the automatic testing structure 6 includes a gas-liquid separator 61 provided at one side end of the storage cavity 2. Among them, the inlet end of the gas-liquid separator 61 is connected to an external gas source through an air inlet pipe 62 extending outside the cabinet 1. The outlet end of the gas-liquid separator 61 is connected to a supply air pipe 63, and the end of the supply air pipe 63 away from the gas-liquid separator 61 is provided with multiple channels respectively communicating with the corresponding storage bins 200. A pressure regulating valve 64 for adjusting the supply air pressure is provided on the supply air pipe 63, and the pressure regulating valve 64 is installed on the outer wall of the cabinet 1 on one side above the test cavity 4. An electric valve 65 electrically connected to the controller 3 for controlling the opening and closing of the channel of the supply air pipe 63 is also provided at one end of the supply air pipe 63 close to the outlet of the pressure regulating valve 64 and communicating with the corresponding storage bin 200. The automatic testing structure 6 further includes a pressure sensor 66 provided in each storage bin 200 and electrically connected to the controller 3 for collecting the internal pressure information of the storage bin 200 to realize the airtightness test of multiple products synchronously. A test control component 67 electrically connected to the controller 3 for controlling the test operation and displaying the test results is also provided on the cabinet 1 above the test cavity 4. The test control component 67 includes a test start button 500 and a test stop button 600 provided on the cabinet 1 above the test cavity 4 for controlling the operation of the electric valve 65 and the pressure sensor 66. It also includes a touch screen 700 provided on the cabinet 1 above the test start button 500 for displaying the test result information of the corresponding storage bin 200. A qualified indicator light 800 and an unqualified indicator light 900 for indicating the qualified status of the product test are also provided on the cabinet 1 below the test start button 500. Among them, the test start button 500, the test stop button 600, the touch screen 700, the qualified indicator light 800, and the unqualified indicator light 900 are all electrically connected to the controller 3.During the use process, after adjusting the air supply pressure through the pressure regulating valve 64 of the automatic test structure 6, the test start button 500 of the test control component 67 is operated to start the electric valve 65 and the pressure sensor 66 to work through the controller 3. At this time, the electric valve 65 is in an open state. The external air source enters the gas-liquid separator 61 from the air inlet pipe 62 for gas-liquid separation, and then through the air supply pipe 63 and the corresponding electric valve 65, the air source with a predetermined volume and pressure is transported into the corresponding storage bin 200, and the controller 3 closes the electric valve 65. At this time, each storage bin 200 is an independent test cavity to automatically and synchronously perform positive-pressure airtightness tests on various industrial products. During this process, when there is air leakage in the industrial product, the gas in the storage bin 200 will enter the interior of the industrial product due to the pressure difference, resulting in a decrease in the gas pressure in the storage bin 200. At this time, the pressure sensor 66 collects the pressure information in the corresponding storage bin 200 in real time and synchronously transmits it to the controller 3 for data processing. Since the pressure decreases within a predetermined time period, it is determined that there is air leakage in the industrial product, and it is an unqualified product. In addition, when there is no air leakage in the industrial product, the pressure sensor 66 collects the pressure information in the corresponding storage bin 200 in real time and synchronously transmits it to the controller 3 for data processing. Since the pressure remains unchanged within a predetermined time period, it is determined that there is no air leakage in the industrial product, and it is a qualified product. Thus, the airtightness test results of various industrial products are obtained, and the controller 3 correspondingly starts the qualified indicator light 800 or the unqualified indicator light 900 to work, and synchronously transmits the airtightness test results of the corresponding storage bin 200 to the touch screen 700 for display, thereby reminding the tester to view and identify the test status of each industrial product for timely processing. After the test, the test stop button 600 is operated to stop the electric valve 65, the qualified indicator light 800, and the unqualified indicator light 900 to work through the controller 3, thereby realizing the synchronous test of the airtightness of multiple industrial products and effectively improving the detection efficiency.

[0026] In this embodiment, a USB connection port 7 electrically connected to the controller 3 is provided between the test start button 500 and the test stop button 600 on the cabinet 1. Among them, the controller 3 is connected to an external storage device through the USB connection port 7 to use the touch screen 700 to operate to transfer the test data in the controller 3 to the external storage device. During the use process, the controller 3 is connected to an external storage device through the USB connection port 7 to operate the touch screen 700 to transfer the test data in the controller 3 to the external storage device for off-site viewing, effectively improving the convenience of use.

[0027] In this embodiment, on both outer ends of the cabinet body 1 located outside the test chamber 4, there is a safety grating 8 electrically connected to the controller 3 for collecting information on the entry of a person's limb into the test chamber 4 so as to automatically stop the test work through the controller 3. During use, the safety grating 8 collects in real time information on the entry of an external person's limb or other object into the test chamber 4 and synchronously transmits it to the controller 3, and the controller 3 stops the operation of the product placement structure and the automatic test structure 6, thereby stopping the airtightness test operation of industrial products to avoid damage to equipment or personnel and effectively improving the safety of use.

[0028] In this embodiment, at the bottom of the cabinet body 1, there are walking wheels 9 that can facilitate the tester to move the cabinet body 1 to a designated place; between the storage chamber 2 and the test chamber 4 on the cabinet body 1, there is a drawer 10 for storing external hardware tools to facilitate the tester to take and use them for assisting in the airtightness test operation of industrial products.

[0029] When this embodiment is specifically used, first, when it is necessary to perform airtightness detection on industrial products without test channels, under the active guidance of the walking wheels 9, the cabinet 1 is pushed to move the storage cavity 2 together with the controller 3, the test cavity 4, the product placement structure 5, and the automatic test structure 6 to a designated location; secondly, the corresponding industrial products are respectively placed in the storage bins 200 of the product airtight storage components 56 of the product placement structure 5, and the corresponding tools are taken from the drawer 10 to adjust the positions of the industrial products. Then, the start button 57 is operated to start the working of the pressing cylinder 54 through the controller 3. The movable shaft of the pressing cylinder 54 is used to drive the floating joint 55 together with the base 53, the T-shaped bushing 52, and the closing seat 300 to move along the support rod 51 towards the storage base 100 until the closing seat 300 is in close contact with the storage base 100 to make the storage bin 200 in a sealed state. Then, the stop button 59 or the emergency stop button 58 is operated to stop the working of the pressing cylinder 54, thereby hermetically limiting the corresponding industrial products in the corresponding storage bins 200;Then, after adjusting the air supply pressure through the pressure regulating valve 64 of the automatic test structure 6, operate the test start button 500 of the test control component 67 to start the electric valve 65 and the pressure sensor 66 through the controller 3. At this time, the electric valve 65 is in the open state, and the external air source enters the gas-liquid separator 61 from the air inlet pipe 62 to implement gas-liquid separation, and then passes through the air supply pipe 63 and the corresponding electric valve 65 to deliver the air source of the predetermined volume pressure to the corresponding storage bin 200, and the controller 3 closes the electric valve 65. At this time, each storage bin 200 is an independent test cavity to automatically and synchronously implement positive pressure airtightness testing for each industrial product. During the test, when there is a gas leak in the industrial product, the gas in the storage bin 200 will enter the interior of the industrial product due to the pressure difference, thereby causing the gas pressure in the storage bin 200 to decrease. At this time, the pressure information in the corresponding storage bin 200 is collected in real time by the pressure sensor 66 and synchronously transmitted to the controller 3 for data processing. Since the pressure decreases within the predetermined time period, it is determined that there is a gas leak in the industrial product and it is an unqualified product. In addition, when there is no gas leak in the industrial product, the pressure information in the corresponding storage bin 200 is collected in real time by the pressure sensor 66 and synchronously transmitted to the controller 3 for data processing. The pressure remains unchanged within a predetermined time period, thereby judging that the industrial product has no air leakage and is a qualified product. The air tightness test results of each industrial product are thus obtained, and the controller 3 starts the qualified indicator light 800 or the unqualified indicator light 900 accordingly, and synchronously transmits the air tightness test results of the corresponding storage bin 200 to the touch screen 700 for display, thereby reminding the test personnel to check and identify the test status of each industrial product for timely processing. After the test is completed, the test stop button 600 is operated to stop the electric valve 65 and the qualified indicator light 800 and the unqualified indicator light 900 through the controller 3, thereby achieving the purpose of The simultaneous testing of the air tightness of multiple industrial products effectively improves testing efficiency. Finally, the safety light barrier 8 collects real-time information about external personnel's limbs or other objects entering the test chamber 4 and synchronously transmits it to the controller 3. The controller 3 then stops the product placement mechanism and the automatic test mechanism 6, thereby halting the air tightness testing of the industrial products to avoid damage to equipment or personnel, effectively improving user safety. Furthermore, the USB port 7 connects the controller 3 to an external storage device, allowing the touch screen 700 to operate and export the test data stored in the controller 3 to the external storage device for external viewing, effectively improving user convenience.

[0030] In summary, the utility model adopts the above structure, which has the advantage of being able to simultaneously perform airtightness tests on multiple products to improve detection efficiency.

[0031] Those skilled in the art can make various corresponding changes and deformations according to the technical solutions and concepts described above, and all such changes and deformations should fall within the protection scope of the claims of this utility model.

Claims

1. A multi-channel airtightness detector, comprising a cabinet body (1), a storage cavity (2) is arranged at the lower end of the cabinet body (1), and a controller (3) electrically connected to an external power supply is installed inside the storage cavity (2), and a test cavity (4) is opened on the cabinet body (1) above the storage cavity (2); It is characterized in that: A product placement structure (5) for hermetically placing a number of products to be tested inside is provided on the test chamber (4), and an automatic testing structure (6) with multiple channels connected to corresponding cavities of the product placement structure (5) to synchronously perform airtightness tests on each product to be tested is also provided on the cabinet body (1). Among them, the product placement structure (5) and the automatic testing structure (6) are both electrically connected to the controller (3).

2. The multi-channel airtightness detector according to claim 1, wherein: The product placement structure (5) includes support rods (51) provided at four ends of the test chamber (4). A base (53) capable of sliding relative to the support rods (51) is provided on the support rods (51) through a T-shaped bushing (52). It also includes a downward pressure cylinder (54) provided on the cabinet body (1) above the test chamber (4) and electrically connected to the controller (3), and the output shaft of the downward pressure cylinder (54) is connected to the top of the base (53) through a floating joint (55) to drive the base (53) to move. A product airtight storage assembly (56) for hermetically and spacedly placing a number of products to be tested is also provided at the bottom of the base (53).

3. The multi-channel airtightness detector according to claim 2, characterized in that: The product placement structure (5) also includes a start button (57), an emergency stop button (58), and a stop button (59) provided on the cabinet body (1) near one outer side of the test chamber (4) and electrically connected to the controller (3) for controlling the operation of the downward pressure cylinder (54). Among them, the automatic testing structure (6) is connected to the product airtight storage assembly (56).

4. The multi-channel airtightness detector according to claim 3, characterized in that: The product airtight storage assembly (56) includes a storage base (100) provided at the bottom of the test chamber (4). A number of storage bins (200) for storing corresponding products to be tested are spacedly provided on the storage base (100). A sealing seat (300) capable of hermetically fitting with the top of the storage base (100) to separate each storage bin (200) into an airtight cavity is also provided at the bottom of the base (53). Among them, the automatic testing structure (6) is connected to the storage bin (200).

5. The multi-channel airtightness detector according to claim 4, characterized in that: The automatic testing structure (6) includes a gas-liquid separator (61) provided at one side end of the storage cavity (2). Among them, the inlet end of the gas-liquid separator (61) is connected to an external gas source through an air inlet pipe (62) extending outside the cabinet body (1). The outlet end of the gas-liquid separator (61) is connected to a supply air pipe (63), and the end of the supply air pipe (63) away from the gas-liquid separator (61) has multiple channels respectively communicating with corresponding storage bins (200). A pressure regulating valve (64) for adjusting the supply air pressure is provided on the supply air pipe (63), and the pressure regulating valve (64) is installed on the outer wall of the cabinet body (1) above the test chamber (4) on one side. Electric valves (65) electrically connected to the controller (3) for controlling the opening and closing of the corresponding channel of the supply air pipe (63) are also provided at the ends of the supply air pipe (63) near the outlet of the pressure regulating valve (64) and communicating with the corresponding storage bins (200).

6. The multi-channel airtightness detector according to claim 5, characterized in that: The automatic test structure (6) further includes a pressure sensor (66) disposed in each of the storage bins (200) and electrically connected to the controller (3) for collecting the internal pressure information of the storage bin (200) to synchronously perform airtightness tests on multiple products. A test control component (67) electrically connected to the controller (3) for controlling test operations and displaying test results is also provided above the test chamber (4) on the cabinet body (1).

7. The multi-channel airtightness detector according to claim 6, characterized in that: The test control component (67) includes a test start button (500) and a test stop button (600) disposed above the test chamber (4) on the cabinet body (1) for controlling the operation of the electric valve (65) and the pressure sensor (66). It also includes a touch screen (700) disposed above the test start button (500) on the cabinet body (1) for displaying the test result information of the corresponding storage bin (200). A qualified indicator light (800) and an unqualified indicator light (900) for indicating the qualified status of product tests are also provided below the test start button (500) on the cabinet body (1). Among them, the test start button (500), the test stop button (600), the touch screen (700), the qualified indicator light (800), and the unqualified indicator light (900) are all electrically connected to the controller (3).

8. The multi-channel airtightness detector according to claim 7, wherein: A USB connection port (7) electrically connected to the controller (3) is provided between the test start button (500) and the test stop button (600) on the cabinet body (1). Among them, the controller (3) is connected to an external storage device through the USB connection port (7) to transfer the test data in the controller (3) to the external storage device by operating the touch screen (700).

9. The multi-channel airtightness detector according to any one of claims 1 to 8, characterized in that: A safety light curtain (8) electrically connected to the controller (3) for collecting information on personnel's limbs extending into the test chamber (4) to automatically stop the test work by the controller (3) is provided at both outer ends of the test chamber (4) on the cabinet body (1).

10. The multi-channel airtightness detector according to any one of claims 1 to 8, characterized in that: A walking wheel (9) is provided at the bottom of the cabinet body (1) to facilitate the tester to move the cabinet body (1) to a designated location. A drawer (10) for storing external hardware tools to facilitate the tester to access and assist in performing airtightness test operations on industrial products is provided between the storage chamber (2) and the test chamber (4) on the cabinet body (1).

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