Air tightness detection tool

Abstract

The utility model discloses an air tightness detection tool, which comprises a sealing detection box, a plurality of detection containing pumps, a PLC controller and a vacuum pump, the plurality of detection containing pumps are uniformly inserted in the sealing detection box, the PLC controller is fixedly arranged on one side of the sealing detection box, and the vacuum pump is arranged on the other side of the sealing detection box. A plurality of vacuum chambers are uniformly formed in the front end of the sealed detection box, a plurality of exhaust pipes are uniformly and fixedly connected to the rear end of the sealed detection box, and a plurality of alarms are uniformly and fixedly mounted at the top end of the sealed detection box. The device can monitor a plurality of vacuum chambers at the same time, is suitable for large-scale air tightness detection, can adapt to detection requirements of different products through flexible programming of the PLC controller, realizes automation of the detection process through design of a control program by the PLC controller, and improves the detection efficiency from vacuum pumping to pressure monitoring to alarm sending. The whole process does not need manual intervention, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an air tightness detection tool. Background Art

[0002] Air tightness testing is a key link in industrial manufacturing and quality control, which aims to ensure that no gas leakage occurs during normal operation or storage of products or equipment. Existing air tightness testing methods usually involve complex and time-consuming steps. The placement bracket of the items to be tested may affect the air tightness testing and requires human supervision. Therefore, an air tightness testing tool is urgently needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide an airtightness detection tool to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an airtightness detection tool, comprising a sealing detection box, a detection containing drawer, a PLC controller and a vacuum pump, the detection containing drawer is provided with a plurality of evenly inserted inside the sealing detection box, the PLC controller is fixedly installed on one side of the sealing detection box, a plurality of vacuum chambers are evenly opened at the front end of the sealing detection box, a plurality of exhaust pipes are evenly fixedly connected to the rear end of the sealing detection box, a plurality of alarms are evenly fixedly installed at the top of the sealing detection box, a plurality of observation windows are evenly opened at the top of the sealing detection box, transparent tempered glass is fixedly connected to the inner side of the observation window, a solenoid valve is fixedly installed at the top of the exhaust pipe, and a branch pipe is fixedly installed at the input end of the vacuum pump.

[0005] Preferably, the detection and holding drawer includes a drawer box, side baffle balls are evenly fixedly connected to the inner sides of the drawer box, support columns are evenly fixedly connected to the inner bottom end of the drawer box, the top of the support column is spherical in design, a rear baffle is fixedly connected to the inner end of the drawer box close to the sealed detection box, a sealing gasket is nested at the end of the drawer box away from the rear baffle, and an electronic pressure gauge is fixedly installed at the end of the drawer box away from the rear baffle.

[0006] Preferably, the drawer box is movably inserted into the interior of the vacuum chamber.

[0007] Preferably, the main pipe end of the branch pipe is fixedly mounted on the input end of the vacuum pump, and the branch end of the branch pipe is fixedly mounted on an end of the exhaust pipe away from the sealing detection box.

[0008] Preferably, the exhaust pipe, the solenoid valve, the alarm, and the vacuum chamber all correspond to the number of exhaust pipes to be detected and contained.

[0009] Preferably, each of the exhaust pipes, the solenoid valves, the alarm, and the vacuum chamber corresponds one-to-one to each of the detection and release devices.

[0010] Preferably, the PLC controller is electrically connected to the vacuum pump, the solenoid valve, the alarm and the electronic pressure gauge by wires, respectively.

[0011] Preferably, the electronic pressure gauge and the alarm at the corresponding position are electrically connected by wire.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model can monitor multiple vacuum chambers at the same time and is suitable for large-scale air tightness testing. In addition, through the flexible programming of the PLC controller, it can adapt to the testing needs of different products. The control program is designed by the PLC controller to realize the automation of the testing process. From vacuuming to pressure monitoring and then to alarm issuance, the whole process does not require human intervention, which greatly improves the testing efficiency. The design of the support column and the side blocking ball reduces the contact area between the object to be tested and the extraction box, so as to achieve comprehensive testing of the object to be tested and reduce errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the sealing detection box structure in the utility model;

[0017] Figure 4 It is a schematic diagram of the detection, containing and drawing structure in the utility model.

[0018] In the figure: 1-seal detection box, 2-detection container, 3-PLC controller, 4-vacuum pump, 5-branch pipe, 6-exhaust pipe, 7-solenoid valve, 8-observation window, 9-alarm, 10-vacuum chamber, 11-exhaust box, 12-electronic pressure gauge, 13-sealing pad, 14-support column, 15-side ball, 16-rear guardrail. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides an embodiment: an airtightness detection tool, including a sealing detection box 1, a detection containing pump 2, a PLC controller 3 and a vacuum pump 4, the detection containing pump 2 is provided with a plurality of evenly plugged into the inside of the sealing detection box 1, the PLC controller 3 is fixedly installed on one side of the sealing detection box 1, the front end of the sealing detection box 1 is evenly provided with a plurality of vacuum chambers 10, the rear end of the sealing detection box 1 is evenly fixedly connected with a plurality of exhaust pipes 6, the top of the sealing detection box 1 is evenly fixedly installed with a plurality of alarms 9, the top of the sealing detection box 1 is evenly provided with a plurality of observation windows 8, the observation windows 8 A transparent tempered glass is fixedly connected to the inner side, and the situation of the internal objects to be inspected can be observed through the transparent tempered glass on the observation window 8. A solenoid valve 7 is fixedly installed on the top of the exhaust pipe 6, and a branch pipe 5 is fixedly installed on the input end of the vacuum pump 4. The main end of the branch pipe 5 is fixedly installed on the input end of the vacuum pump 4, and the branch end of the branch pipe 5 is fixedly installed on the end of the exhaust pipe 6 away from the sealed detection box 1. The vacuum pump 4 is started by the PLC controller 3. The vacuum pump 4 extracts the air inside the vacuum chamber 10 through the branch pipe 5 and the exhaust pipe 6, and the interior of the vacuum chamber 10 is evacuated.

[0021] The detection and holding drawer 2 includes a drawer box 11, side blocking balls 15 are evenly fixedly connected to the inner sides of the drawer box 11, a support column 14 is evenly fixedly connected to the inner bottom end of the drawer box 11, the top of the support column 14 is spherical, the inner end of the drawer box 11 close to the sealed detection box 1 is fixedly connected to a rear baffle 16, the end of the drawer box 11 away from the rear baffle 16 is nested with a sealing gasket 13, and the end of the drawer box 11 away from the rear baffle 16 is fixedly installed with an electronic pressure gauge 12. The design of the support column 14 and the side blocking ball 15 reduces the contact area between the object to be detected and the drawer box 11, so as to achieve comprehensive detection of the object to be detected.

[0022] The drawer box 11 is movably inserted into the interior of the vacuum chamber 10, and the drawer boxes 11 are sealed by the sealing gasket 13. When the vacuum chamber 10 is evacuated, the external air pressure pushes the drawer box 11 to squeeze the sealing gasket 13 to enhance the sealing effect.

[0023] The exhaust pipe 6, solenoid valve 7, alarm 9, and vacuum chamber 10 all correspond to the number of the detection and holding drawers 2. Each exhaust pipe 6, solenoid valve 7, alarm 9, and vacuum chamber 10 corresponds one-to-one to each detection and holding drawer 2. When detecting multiple items, the sealing effect can be monitored in real time according to the corresponding equipment.

[0024] The PLC controller 3 is electrically connected to the vacuum pump 4, the solenoid valve 7, the alarm 9 and the electronic pressure gauge 12 respectively, and the electronic pressure gauge 12 is electrically connected to the alarm 9 at the corresponding position. Automatic detection is achieved through the PLC controller 3 to reduce labor costs.

[0025] Working principle: During use, first design the control program through the PLC controller 3, then place the object to be detected inside the drawer 11, support the object to be detected by the top of the support column 14 to minimize the contact area with the surface of the object to be detected, then insert the drawer 11 into the vacuum chamber 10 through external force, and seal it with the sealing gasket 13 to improve the detection effect, then control the solenoid valves 7 corresponding to the vacuum chamber 10 containing the object to be detected to open in sequence through the PLC controller 3, and then control the vacuum pump 4 to start through the PLC controller 3, the vacuum pump 4 extracts the air inside the vacuum chamber 10 through the branch pipe 5 and the exhaust pipe 6, and the inside of the vacuum chamber 10 is evacuated. At this time, the external pressure is greater than the pressure inside the vacuum chamber 10, and the external air squeezes the drawer. 11 moves toward the inside of the vacuum chamber 10 and squeezes the sealing gasket 13 to strengthen the sealing between the vacuum chamber 10 and the outside, and transmits the pressure information inside the vacuum chamber 10 to the PLC controller 3 in real time through the electronic pressure gauge 12. When the pressure data received by the PLC controller 3 reaches a predetermined value, the PLC controller 3 controls the vacuum pump 4 and the solenoid valve 7 to close. At this time, the pressure inside the vacuum chamber 10 is a fixed value. When the air tightness of the object to be tested is unqualified and leaks, the pressure inside the vacuum chamber 10 will increase. At this time, the value of the electronic pressure gauge 12 changes. When the pressure value exceeds the predetermined value range, the PLC controller 3 controls the corresponding alarm 9 to sound an alarm. When the detection is completed, the staff can confirm the unqualified objects to be tested according to the number and position of the alarm 9 that sounded the alarm.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtightness testing tool, comprising a sealing testing box (1), a testing container (2), a PLC controller (3) and a vacuum pump (4), characterized in that: The detection and containing extractors (2) are provided with a plurality of evenly inserted into the interior of the sealing detection box (1); the PLC controller (3) is fixedly installed on one side of the sealing detection box (1); a plurality of vacuum chambers (10) are evenly provided at the front end of the sealing detection box (1); a plurality of exhaust pipes (6) are evenly fixedly connected to the rear end of the sealing detection box (1); a plurality of alarms (9) are evenly fixedly installed at the top end of the sealing detection box (1); a plurality of observation windows (8) are evenly provided at the top end of the sealing detection box (1); transparent tempered glass is fixedly connected to the inner side of the observation window (8); a solenoid valve (7) is fixedly installed at the top end of the exhaust pipe (6); and a branch pipe (5) is fixedly installed at the input end of the vacuum pump (4).

2. The airtightness detection tool according to claim 1, characterized in that: The detection and holding drawer (2) comprises a drawer box (11), side blocking balls (15) are evenly fixedly connected to both sides of the drawer box (11), a support column (14) is evenly fixedly connected to the bottom end of the drawer box (11), the top of the support column (14) is spherical, the drawer box (11) is fixedly connected to a rear baffle (16) at one end close to the sealing detection box (1), a sealing gasket (13) is embedded at one end of the drawer box (11) away from the rear baffle (16), and an electronic pressure gauge (12) is fixedly installed at one end of the drawer box (11) away from the rear baffle (16).

3. The airtightness detection tool according to claim 2, characterized in that: The drawer box (11) is movably inserted into the interior of the vacuum chamber (10).

4. The airtightness detection tool according to claim 1, characterized in that: The main pipe end of the branch pipe (5) is fixedly mounted on the input end of the vacuum pump (4), and the branch end of the branch pipe (5) is fixedly mounted on an end of the exhaust pipe (6) away from the sealing detection box (1).

5. The airtightness detection tool according to claim 2, characterized in that: The exhaust pipe (6), the solenoid valve (7), the alarm (9), and the vacuum chamber (10) all correspond to the number of the detection and containing extraction (2).

6. The airtightness detection tool according to claim 5, characterized in that: Each of the exhaust pipes (6), the solenoid valves (7), the alarm (9), and the vacuum chamber (10) corresponds one-to-one to each of the detection and containing extractors (2).

7. The airtightness detection tool according to claim 2, characterized in that: The PLC controller (3) is respectively electrically connected to the vacuum pump (4), the solenoid valve (7), the alarm (9) and the electronic pressure gauge (12) by wires.

8. The airtightness detection tool according to claim 3, characterized in that: The electronic pressure gauge (12) is electrically connected to the alarm (9) at the corresponding position via wires.

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