Leak and tightness tester

Abstract

The utility model provides a leak and tightness tester belongs to tightness test technical field, including positive and negative air pressure unit, positive and negative air pressure unit is used for the air pressure of regulation and control test, positive and negative air pressure unit contains air compressor, vacuum tank, tester, three -way joint no.

Description

Technical Field

[0001] This utility model belongs to the field of sealing test technology, specifically relating to a leakage and sealing tester. Background Technology

[0002] The sealing performance tester is a core piece of equipment in the packaging testing field. It is mainly used to test the sealing performance of packaging containers (such as glass bottles, plastic bottles, and inflatable packaging) in the food, pharmaceutical, and daily chemical industries to prevent the contents from deteriorating or leaking due to sealing failure.

[0003] Currently available sealing testing equipment has significant limitations: Limited testing modes: Most devices only support either positive or negative pressure testing modes. When both modes need to be tested simultaneously, it is necessary to replace the equipment or repeatedly disassemble and adjust the air circuit, which is cumbersome and time-consuming, severely reducing testing efficiency. Lack of waste liquid treatment: Condensate and residual liquids that may be generated during the testing process are not properly collected by most equipment, and can easily flow and contaminate the internal gas path of the equipment, corrode components, and even affect the environment. Therefore, a leakage and sealing tester is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given the following technical problems in the existing technology: how to design a testing device that is fully functional and has stable performance.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a leakage and sealing tester, comprising: The positive and negative air pressure unit is used to regulate the air pressure during testing. The positive and negative air pressure unit includes an air compressor, a vacuum tank, a testing instrument, a three-way connector, a negative pressure pipe, and a positive pressure pipe. The input end of the air compressor is connected to one end of the positive pressure pipe. The three-way connector is installed on the positive pressure pipe. The other end of the positive pressure pipe is connected to the testing instrument. One end of the negative pressure pipe is connected to the testing instrument. The other end of the negative pressure pipe is connected to the vacuum tank. A control unit, which is connected to a positive and negative pressure unit, is used to regulate pressure and gas flow. A pressure gauge, which is connected to a pressure tube, and the pressure tube is connected to a control unit; A discharge unit, which is connected to a control unit, is used to discharge waste liquid; A test puncture needle is connected to a control unit and is used to connect to and test the device under test.

[0007] By adopting the above technical solution, the testing capability of positive and negative pressure modes can be realized. The air compressor provides the air source, and the three-way connector can be used with the air circuit control to realize the switching of positive and negative pressure air circuits, ensuring stable and independent air pressure in the two modes.

[0008] Furthermore, the control unit includes a first connecting pipe, a first manual control valve, a second connecting pipe, a third connecting pipe, a second tee connector, a fourth connecting pipe, and a third tee connector. One end of the first connecting pipe is connected to the first tee connector, and the other end of the first connecting pipe is connected to the first manual control valve. The first manual control valve is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the second precision control valve. The second precision control valve is connected to one end of the third connecting pipe, and the other end of the third connecting pipe is connected to the second tee connector. One end of the second tee connector is connected to one end of the fourth connecting pipe, and the other end of the fourth connecting pipe is connected to the third tee connector.

[0009] By adopting the above technical solution, the components are connected in an orderly manner through multiple connecting pipes. The manual control valve one can initially control the opening and closing of the positive pressure air path, the precision control valve two can realize pressure fine adjustment to ensure pressure control accuracy, and the three-way connector two serves as a pressure monitoring and air path transfer node. On one side, it connects to a pressure gauge to realize real-time pressure measurement, and on the other side, it transmits air pressure to the three-way connector three through the connecting pipe four. The three-way connector three realizes the reasonable diversion of air path to the test puncture needle and the discharge unit. The overall structure ensures stable air path transmission and accurate pressure regulation.

[0010] Furthermore, the pressure pipe is connected to one end of the two tee connectors.

[0011] By adopting the above technical solution, the real-time air pressure at the second tee joint is transmitted to the pressure gauge, ensuring that the pressure gauge reading is consistent with the actual air pressure, and providing a basis for operators to fine-tune the pressure through the second precision control valve.

[0012] Furthermore, one end of the puncture tube is connected to the tip of the test puncture needle, and the other end of the puncture tube is connected to one end of the three-way connector.

[0013] By adopting the above technical solution, the test puncture needle is connected to the three-way connector through the puncture tube, so that the gas output by the control unit is transmitted to the inside of the tested component.

[0014] Furthermore, the discharge unit includes a manual venting valve, a discharge pipe, a waste liquid tank, and a connecting pipe. One end of the connecting pipe is connected to the manual venting valve, the manual venting valve is connected to one end of the discharge pipe, and the other end of the discharge pipe is connected to the waste liquid tank.

[0015] By adopting the above technical solution, the connecting pipe five realizes the gas-liquid communication between the discharge unit and the control unit. The manual venting valve can be manually controlled to release the gas. The discharge pipe guides the gas and liquid to flow into the waste liquid tank in a directional manner, preventing waste liquid from polluting the equipment and the environment, while facilitating the subsequent cleaning and maintenance of the waste liquid tank.

[0016] Furthermore, the end of the connecting pipe five that is away from the manual vent valve is connected to one end of the tee connector three.

[0017] By adopting the above technical solution, the waste liquid of the three-way connector is introduced into the discharge unit through the connecting pipe five, so that the waste liquid after the test can be discharged in time, and the three-way connector three provides functional support for testing, pressure relief and liquid discharge.

[0018] The beneficial effects of this utility model are as follows: 1. This utility model can perform dual-mode testing and has strong adaptability. Relying on the cooperation of positive and negative air pressure units and three-way connector one, it can quickly realize the switching of positive and negative air paths and complete the two-mode testing without changing the equipment. 2. This utility model has precise pressure control and reliable test results. The control unit adopts a precision control valve for pressure fine adjustment. With the help of a pressure gauge, the operator can monitor and calibrate the pressure in real time.

[0019] 3. This utility model is environmentally friendly and easy to maintain for waste liquid treatment. It is equipped with an independent discharge unit, which is connected to the three-way connector via a five-way connector. After testing, the waste liquid can flow into the waste liquid tank in a specific direction, avoiding pollution of equipment and the environment.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Attached reference numerals: 1. Air compressor; 2. Vacuum tank; 3. Tester; 4. T-connector one; 5. Manual control valve one; 6. Precision control valve two; 7. T-connector two; 8. T-connector three; 9. Manual vent valve; 10. Waste liquid tank; 11. Test puncture needle; 12. Pressure gauge; 13. Negative pressure tube; 14. Connecting tube one; 15. Connecting tube two; 16. Connecting tube three; 17. Pressure tube; 18. Connecting tube four; 19. Connecting tube five; 20. Puncture tube; 21. Drain tube; 22. Positive pressure tube. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Reference Figure 1 This utility model provides a leakage and sealing tester, comprising: The positive and negative pressure unit is used to regulate the air pressure during testing. The positive and negative pressure unit includes an air compressor 1, a vacuum tank 2, a testing instrument 3, a three-way connector 4, a negative pressure pipe 13, and a positive pressure pipe 22. The input end of the air compressor 1 is connected to one end of the positive pressure pipe 22. The three-way connector 4 is installed on the positive pressure pipe 22, and the other end of the positive pressure pipe 22 is connected to the testing instrument 3. One end of the negative pressure pipe 13 is connected to the testing instrument 3, and the other end of the negative pressure pipe 13 is connected to the vacuum tank 2. The testing instrument 3 is a leakage and sealing strength tester. The testing instrument 3 receives the air source through the three-way connector 4 and controls the negative pressure parameters. It is the command center of the testing process and its model is C660B. The control unit is connected to the positive and negative pressure units and is used to regulate the pressure and gas flow. Pressure gauge 12, pressure gauge 12 is connected to pressure tube 17, pressure tube 17 is connected to control unit, pressure gauge 12 model is 2022F283-31; The discharge unit is connected to the control unit and is used to discharge waste liquid. Test puncture needle 11 is connected to the control unit and is used to connect and test the test piece. The air compressor provides the air source. The three-way connector 4 can be used with the air circuit control to switch between positive and negative pressure air circuits, ensuring stable and independent air pressure in both modes.

[0027] The control unit includes connecting pipe 14, manual control valve 15, connecting pipe 2 15, connecting pipe 3 16, tee connector 2 7, connecting pipe 4 18, and tee connector 3 8. One end of connecting pipe 14 is connected to tee connector 1 4, and the other end of connecting pipe 14 is connected to manual control valve 1 5. Manual control valve 1 5 is connected to one end of connecting pipe 2 15, and the other end of connecting pipe 2 15 is connected to precision control valve 2 6. Precision control valve 2 6 is connected to one end of connecting pipe 3 16, and the other end of connecting pipe 3 16 is connected to tee connector 2 7. One end of tee connector 2 7 is connected to connecting pipe 4 18. One end of the connecting pipe is connected to the other end of the connecting pipe 18, which is connected to the three-way connector 38. The components are connected in an orderly manner through multiple connecting pipes. The manual control valve 15 can initially control the opening and closing of the positive pressure air path. The precision control valve 26 can achieve pressure fine adjustment to ensure pressure control accuracy. The three-way connector 27 serves as a pressure monitoring and air path transfer node. One side is connected to the pressure gauge 12 to achieve real-time pressure measurement, and the other side transmits the air pressure to the three-way connector 38 through the connecting pipe 18. The three-way connector 38 realizes the reasonable diversion of the air path to the test puncture needle 11 and the discharge unit. The overall structure ensures stable air path transmission and accurate pressure regulation.

[0028] Pressure pipe 17 is connected to one end of tee connector 2 7, transmitting the real-time air pressure at tee connector 2 7 to pressure gauge 12, ensuring that the value displayed on pressure gauge 12 is consistent with the actual air pressure, and providing a basis for operators to fine-tune the pressure through precision control valve 2 6.

[0029] One end of the puncture tube 20 is connected to the test puncture needle 11, and the other end of the puncture tube 20 is connected to one end of the three-way connector 38. The test puncture needle 11 is connected to the three-way connector 38 through the puncture tube 20, so that the positive pressure output by the control unit is transmitted to the inside of the test piece.

[0030] The discharge unit includes a manual vent valve 9, a discharge pipe 21, a waste liquid tank 10, and a connecting pipe 19. One end of the connecting pipe 19 is connected to the manual vent valve 9, and the manual vent valve 9 is connected to one end of the discharge pipe 21. The other end of the discharge pipe 21 is connected to the waste liquid tank 10. The connecting pipe 19 enables gas-liquid communication between the discharge unit and the control unit. The manual vent valve 9 can be manually controlled to release gas. The discharge pipe 21 guides the gas and liquid to flow into the waste liquid tank 10 in a directional manner to prevent waste liquid from polluting the equipment and the environment, while also facilitating the subsequent cleaning and maintenance of the waste liquid tank 10.

[0031] The end of the connecting pipe 19 furthest from the manual vent valve 9 is connected to one end of the three-way connector 38. By allowing the waste liquid from the three-way connector 38 to be introduced into the discharge unit through the connecting pipe 19, the waste liquid after the test can be discharged in a timely manner. The three-way connector 38 also provides functional support for testing, pressure relief and liquid discharge.

[0032] The specific implementation method is as follows: For the positive pressure test, air compressor 1 is used as the positive pressure air source. The positive pressure gas is transmitted through positive pressure pipe 22. At this time, the test instrument 3 is turned off, and the negative pressure air path is cut off. The gas enters the control unit via a three-way connector 4 installed on the positive pressure pipe 22. The gas first connects to manual control valve 5 through connecting pipe 14, which controls the opening and closing of the positive pressure air path. Then, it enters precision control valve 6 through connecting pipe 2 15. The operator can fine-tune the air pressure through precision control valve 2 6 to ensure the pressure meets the test requirements. The adjusted gas is then delivered to three-way connector 7 through connecting pipe 3 16, where it connects to the three-way connector. The pressure tube 17 connected to the first two 7 will transmit the real-time air pressure to the pressure gauge 12, so that the operator can monitor and further calibrate the pressure in real time. After the pressure monitoring is completed, the gas enters the three-way connector 8 through the connecting tube 18, and then is transmitted to the test puncture needle 11 through the puncture tube 20. After the test puncture needle 11 pierces the test piece, positive pressure is introduced into the test piece to test its sealing performance. After the test is completed, the manual vent valve 9 of the venting unit is opened, and the gas in the test piece and the waste liquid that may be generated will be discharged into the waste liquid tank 10 through the connecting tube 19 and the venting tube 21, completing the positive pressure test process. During the negative pressure test, the manual control valve 5 is closed, and the positive pressure air circuit is disconnected. The tester 3, in conjunction with the negative pressure logic of the air compressor 1, establishes an environment lower than atmospheric pressure. The tester 3 sets or maintains the air pressure, and the air compressor 1 starts to provide an air source to the tester 3. The tester 3 controls the negative pressure, and through the negative pressure pipe 13, it controls the vacuum tank 2 containing water to become a vacuum state and then a negative pressure state. The test piece is placed in the vacuum tank 2. The sealing performance of the test piece is then determined by observing the expansion of the test piece and the recovery of the sample shape after the vacuum is released.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A leakage and sealing tester, characterized in that, include: The positive and negative pressure unit is used to regulate the air pressure during testing. The positive and negative pressure unit includes an air compressor (1), a vacuum tank (2), a testing instrument (3), a three-way connector (4), a negative pressure pipe (13), and a positive pressure pipe (22). The input end of the air compressor (1) is connected to one end of the positive pressure pipe (22). The three-way connector (4) is installed on the positive pressure pipe (22). The other end of the positive pressure pipe (22) is connected to the testing instrument (3). One end of the negative pressure pipe (13) is connected to the testing instrument (3). The other end of the tube (13) is connected to the vacuum tank (2); the control unit is connected to the positive and negative pressure unit and is used to regulate the pressure and gas flow; the pressure gauge (12) is connected to the pressure tube (17) and is connected to the control unit; the discharge unit is connected to the control unit and is used to discharge waste liquid; the test puncture needle (11) is connected to the control unit and is used to connect to the test piece for testing.

2. The leakage and sealing tester according to claim 1, characterized in that: The control unit includes a first connecting pipe (14), a first manual control valve (5), a second connecting pipe (15), a third connecting pipe (16), a second tee connector (7), a fourth connecting pipe (18), and a third tee connector (8). One end of the first connecting pipe (14) is connected to the first tee connector (4), and the other end of the first connecting pipe (14) is connected to the first manual control valve (5). The first manual control valve (5) is connected to one end of the second connecting pipe (15), and the other end of the second connecting pipe (15) is connected to the second precision control valve (6). The second precision control valve (6) is connected to one end of the third connecting pipe (16), and the other end of the third connecting pipe (16) is connected to the second tee connector (7). One end of the second tee connector (7) is connected to one end of the fourth connecting pipe (18), and the other end of the fourth connecting pipe (18) is connected to the third tee connector (8).

3. The leakage and sealing tester according to claim 2, characterized in that: The pressure pipe (17) is connected to one end of the tee connector (7).

4. The leakage and sealing tester according to claim 3, characterized in that: The test puncture needle (11) is connected to one end of a puncture tube (20), and the other end of the puncture tube (20) is connected to one end of a three-way connector (8).

5. The leakage and sealing tester according to claim 4, characterized in that: The discharge unit includes a manual venting valve (9), a discharge pipe (21), a waste liquid tank (10), and a connecting pipe (19). One end of the connecting pipe (19) is connected to the manual venting valve (9), the manual venting valve (9) is connected to one end of the discharge pipe (21), and the other end of the discharge pipe (21) is connected to the waste liquid tank (10).

6. The leakage and sealing tester according to claim 5, characterized in that: The end of the connecting pipe five (19) away from the manual vent valve (9) is connected to one end of the three-way connector three (8).

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