Container sealing performance tester

Abstract

The present invention discloses a container sealing performance tester, comprising: a pressure control unit, a first test unit, a second test unit and a dye pipeline. The pressure control unit comprises a module body and a positive pressure controller, a negative pressure controller, a first control valve and a second control valve arranged on the module body, and the module body is also provided with an input interface and two output interfaces. The input interface of the first test unit is connected to an output interface of the module body through a first pipeline, and a first air intake control valve is arranged on the first pipeline, and the output port of the first test unit is used to be connected to a first exhaust pipeline, and a first exhaust control valve is arranged on the first exhaust pipeline. By this, the container sealing performance tester of the present invention has a simple and reasonable structure, and can prepare another group or more groups of container test samples in advance while testing one or more groups of container test samples, thereby shortening the test time and improving the test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of container sealing performance testing, in particular to a container sealing performance testing instrument. Background Art

[0002] At present, the testing process of the container sealing performance tester is divided into the following test stages: Test stage one, placing the container sample to be tested in the test barrel; Test stage two, applying positive pressure or negative pressure to the test barrel, or alternating positive and negative pressure; Test stage three, after standing for a certain period of time, restore the test barrel to normal pressure; Test stage four, open the test barrel, take out the container sample and observe it.

[0003] The container sealing performance tester will take a lot of time during the entire test process, and the operator cannot perform other operations during the test and can only wait for the test to be completed. This kind of sealing performance tester has low testing efficiency and cannot cope with the working scenario where there are a large number of container samples to be tested and rapid testing is required.

[0004] In addition, the liquid dye is always stored in the test barrel during the entire test process. The operation of taking out and placing the container test sample will cause contamination to the liquid dye, thereby affecting the results.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a container sealing performance tester with a simple and reasonable structure. While testing one or more groups of container test samples, another group or more of container test samples can be prepared in advance, thereby shortening the test time and improving the test efficiency.

[0007] To achieve the above object, the present invention provides a container sealing performance tester, comprising: a pressure control unit, a first test unit, a second test unit and a dye pipeline. The pressure control unit comprises a module body and a positive pressure controller, a negative pressure controller, a first control valve and a second control valve arranged on the module body, and the module body is also provided with an input interface and two output interfaces. The input interface of the first test unit is connected to an output interface of the module body through a first pipeline, and a first air intake control valve is arranged on the first pipeline, and the output port of the first test unit is used to be connected to a first emptying pipeline, and a first exhaust control valve is arranged on the first emptying pipeline. The input interface of the second test unit is connected to another output interface of the module body through a second pipeline, and a second air intake control valve is arranged on the second pipeline, and the output port of the second test unit is used to be connected to a second emptying pipeline, and a second exhaust control valve is arranged on the second emptying pipeline. One end of the dye pipeline is connected to the first test unit, and the other end of the dye pipeline is connected to the second test unit, and a third control valve is arranged on the dye pipeline. Among them, when the first test unit is tested, after the container sample is placed in the first test unit, the first air intake control valve is closed, the first exhaust control valve is opened, the third control valve is opened, the second air intake control valve is opened, the second exhaust control valve is closed, the first control valve is opened, the positive pressure controller works, and the pressure in the second test unit increases, driving the dye in the dye pipeline into the test barrel body of the first test unit. After the dye completely enters the test barrel body, the first control valve, the positive pressure controller, the third control valve and the second air intake control valve are closed, and the first air intake control valve is opened to start testing, and the second test unit enters an idle state.

[0008] In one embodiment of the present invention, when the second test unit is tested, after the container sample is placed in the second test unit, the second air intake control valve is closed, the second exhaust control valve is opened, the third control valve is opened, the first air intake control valve is opened, the first exhaust control valve is closed, the first control valve is opened, the positive pressure controller works, and the pressure in the first test unit increases, driving the dye in the dye pipeline into the test barrel body of the second test unit. After the dye completely enters the test barrel body, the first control valve, the positive pressure controller, the third control valve and the first air intake control valve are closed, and the second air intake control valve is opened to start testing, and the first test unit enters an idle state.

[0009] In one embodiment of the present invention, a pump is also provided on the dye pipeline.

[0010] In one embodiment of the present invention, the input interface on the module body is used to connect to a gas source.

[0011] In one embodiment of the present invention, when the pump is present, when the first test unit is tested, after the container sample is placed in the first test unit, the first air intake control valve is closed, the first exhaust control valve and the second exhaust control valve are both opened, the third control valve is opened, and the pump works to drive the dye into the first test barrel body of the first test unit. After the dye completely enters the first test barrel body, the pump and the third control valve are closed, and the first exhaust control valve is closed at the same time, the first air intake control valve is opened to start testing, and the second test unit enters an idle state.

[0012] In one embodiment of the present invention, when the pump is present, when the second test unit is tested, after the container sample is placed in the second test unit, the second air intake control valve is closed, the second exhaust control valve and the first exhaust control valve are both opened, the third control valve is opened, and the pump works to drive the dye into the second test barrel body of the second test unit. After the dye completely enters the second test barrel body, the pump and the third control valve are closed, and the second exhaust control valve is closed at the same time, the second air intake control valve is opened to start testing, and the first test unit enters an idle state.

[0013] In one embodiment of the present invention, the container sealing performance tester further includes a dye recovery unit, which is connected to the first test unit and the second test unit respectively through a dye pipeline.

[0014] In one embodiment of the present invention, the dye recovery unit has a dye container, and the dye container is used to contain the dye.

[0015] Compared with the prior art, the container sealing performance tester according to the present invention has a simple and reasonable structure. While testing one or more groups of container test samples, another group or more container test samples can be prepared in advance, thereby shortening the test time and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a main structural view of a container sealing performance tester according to an embodiment of the present invention;

[0017] Figure 2 1 is another schematic diagram of the main structure of a container sealing performance tester according to an embodiment of the present invention.

[0018] Description of main reference numerals:

[0019] 001-container sample, 002-dye, 003-third control valve, 004-pump, 107-positive pressure controller, 108-negative pressure controller, 109-first control valve, 110-second control valve, 207-test barrel cover, 208-first air intake control valve, 209-seal, 210-test barrel body, 211-sample rack, 213-first exhaust control valve, 214-second air intake control valve, 215-second exhaust control valve, 901-dye container, 100-pressure control unit, 200-first test unit, 300-second test unit, 900-dye recovery unit. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0021] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0022] Figure 1 1 is a schematic diagram of a main structural view of a container sealing performance tester according to an embodiment of the present invention. Figure 2 1 is another schematic diagram of the main structure of a container sealing performance tester according to an embodiment of the present invention.

[0023] like Figure 1 to Figure 2As shown, a container sealing performance tester according to a preferred embodiment of the present invention includes: a pressure control unit 100, a first test unit 200, a second test unit 300 and a dye pipeline. The pressure control unit 100 includes a module body and a positive pressure controller 107, a negative pressure controller 108, a first control valve 109 and a second control valve 110 arranged on the module body, and the module body is also provided with an input interface and two output interfaces. The input interface of the first test unit 200 is connected to an output interface of the module body through a first pipeline, and a first air intake control valve 208 is arranged on the first pipeline, and the output port of the first test unit 200 is used to connect to the first emptying pipeline, and a first exhaust control valve 213 is arranged on the first emptying pipeline. The input interface of the second test unit 300 is connected to another output interface of the module body through a second pipeline, and a second air intake control valve 214 is arranged on the second pipeline, and the output port of the second test unit 300 is used to connect to the second emptying pipeline, and a second exhaust control valve 215 is arranged on the second emptying pipeline. One end of the dye pipeline is connected to the first test unit 200 , the other end of the dye pipeline is connected to the second test unit 300 , and a third control valve 003 is provided on the dye pipeline. Among them, when the first test unit 200 is tested, after the container sample 001 is placed in the first test unit 200, the first air intake control valve 208 is closed, the first exhaust control valve 213 is opened, the third control valve 003 is opened, the second air intake control valve 214 is opened, the second exhaust control valve 215 is closed, the first control valve 109 is opened, the positive pressure controller 107 works, and the pressure in the second test unit 300 increases, driving the dye 002 in the dye pipeline into the test barrel body 210 of the first test unit 200. After the dye 002 completely enters the test barrel body 210, the first control valve 109, the positive pressure controller 107, the third control valve 003 and the second air intake control valve 214 are closed, and the first air intake control valve 208 is opened to start testing, and the second test unit 300 enters an idle state. The top of the test barrel body 210 is provided with a test barrel cover 207 , and a seal 209 is provided between the test barrel cover and the test barrel body. A sample rack 211 is arranged in the test barrel body, and the container sample 001 is placed on the sample rack 211 .

[0024] In one embodiment of the present invention, when the second test unit 300 is tested, after the container sample 001 is placed in the second test unit 300, the second air intake control valve 214 is closed, the second air exhaust control valve 215 is opened, the third control valve 003 is opened, the first air intake control valve 208 is opened, the first exhaust control valve 213 is closed, the first control valve 109 is opened, the positive pressure controller 107 works, and the pressure in the first test unit 200 increases, driving the dye 002 in the dye pipeline into the test barrel body 210 of the second test unit 300. After the dye 002 completely enters the test barrel body 210, the first control valve 109, the positive pressure controller 107, the third control valve 003 and the first air intake control valve 208 are closed, and the second air intake control valve 214 is opened to start the test, and the first test unit 200 enters the idle state.

[0025] In one embodiment of the present invention, the dye pipeline is further provided with a pump 004. The input interface on the module body is used to connect to the gas source.

[0026] In one embodiment of the present invention, when the pump 004 is present, when the first test unit 200 is tested, after the container sample 001 is placed in the first test unit 200, the first air intake control valve 208 is closed, the first exhaust control valve 213 and the second exhaust control valve 215 are both opened, the third control valve 003 is opened, and the pump 004 is operated to drive the dye 002 into the first test barrel body 210 of the first test unit 200. After the dye 002 completely enters the first test barrel body 210, the pump 004 and the third control valve 003 are closed, and the first exhaust control valve 213 is closed at the same time, the first air intake control valve 208 is opened to start the test, and the second test unit 300 enters the idle state.

[0027] In one embodiment of the present invention, when the pump 004 is present, when the second test unit 300 is tested, after the container sample 001 is placed in the second test unit 300, the second air intake control valve 214 is closed, the second exhaust control valve 215 and the first exhaust control valve 213 are both opened, the third control valve 003 is opened, and the pump 004 is operated to drive the dye 002 into the second test barrel body 210 of the second test unit 300. After the dye 002 completely enters the second test barrel body 210, the pump 004 and the third control valve 003 are closed, and the second exhaust control valve 215 is closed at the same time, the second air intake control valve 214 is opened to start the test, and the first test unit 200 enters the idle state.

[0028] In one embodiment of the present invention, the container sealing performance tester further comprises a dye recovery unit 900, which is connected to the first test unit 200 and the second test unit 300 through a dye pipeline. The dye recovery unit 900 has a dye container 901, which is used to contain the dye.

[0029] Embodiment 1

[0030] The container sealing performance tester of the present invention has multiple test units capable of performing continuous testing, such as Figure 1 As shown, in this embodiment, the pressure control unit 100 includes a positive pressure controller 107 and a negative pressure controller 108 and their corresponding first control valves 109 and second control valves 110 .

[0031] When the positive pressure controller 107 is working, the first control valve 109 is opened and the second control valve 110 is closed; when the negative pressure controller 108 is working, the second control valve 110 is opened and the first control valve 109 is closed.

[0032] The pressure control unit 100 is provided with two interfaces, an input interface and an output interface. The input interface is connected to the gas source, and the output interface is connected to the first test unit 200 and the second test unit 300 through pipelines.

[0033] The first test unit 200 is provided with an input-output interface connected to the output interface of the pressure control unit 100 through a pipeline, and a first air intake control valve 208 is provided on the pipeline to control the on and off of the pipeline. The first test unit 200 is also provided with a first exhaust pipeline, and a first exhaust control valve 213 is provided on the pipeline to control the on and off of the exhaust pipeline.

[0034] The second test unit 300 is completely identical to the first test unit 200 , and thus will not be described in detail herein.

[0035] A dye pipeline is also provided between the first test unit 200 and the second test unit 300, and is respectively connected to the bottom opening of the test barrel body 210 in the first test unit 200 and the second test unit 300. The dye pipeline is provided with a third control valve 003 and a pump 004. The third control valve 003 is used to control the on and off of the dye pipeline, and the pump 004 is used to drive the dye 002.

[0036] The working principle of this embodiment:

[0037] (1) When the pump 004 is present, during the test of the first test unit 200, after the container sample 001 is placed, the first air intake control valve 208 is closed, the first air exhaust control valve 213 is opened, the second air exhaust control valve 215 in the second test unit 300 is also opened, the third control valve 003 is opened, and the pump 004 works to drive the dye 002 into the test barrel body 210. After the dye 002 is completely driven into the test barrel body 210, the pump 004 and the third control valve 003 are closed, and the first air exhaust control valve 213 is closed at the same time, and the first air intake control valve 208 is opened to start the test. The second test unit 300 enters an idle state, at which time the second test unit 300 can be processed after the test and prepared before the next test.

[0038] (2) When the pump 004 is present, the second test unit 300 operates in exactly the same manner as the first test unit 200. After the second test unit 300 enters the test, the first test unit 200 enters the idle state, at which time the first test unit 200 can be processed after the test and prepared for the next test.

[0039] (3) When the pump 004 does not exist, during the test of the first test unit 200, after the container sample 001 is placed, the first air intake control valve 208 is closed, the first air exhaust control valve 213 is opened, the third control valve 003 is opened, the second air intake valve in the second test unit 300 is opened, the second air exhaust valve is closed, the first control valve 109 is opened, the positive pressure controller 107 is operated, the pressure in the second test unit 300 is increased, and the dye 002 is driven into the test barrel body 210 of the first test unit 200. After the dye 002 completely enters the test barrel body 210, the first control valve 109, the positive pressure controller 107 and the third control valve 003 are closed, and at the same time, all valves of the second test unit 300 are opened, and the first air intake control valve 208 is opened to start the test. The second test unit 300 enters the idle state, and at this time, the second test unit 300 can be processed after the test and prepared before the next test.

[0040] (4) When the pump 004 does not exist, the second test unit 300 works in the same manner as the first test unit 200. After the second test unit 300 enters the test, the first test unit 200 enters the idle state, at which time the first test unit 200 can be processed after the test and prepared for the next test.

[0041] Embodiment 2

[0042] like Figure 2As shown, this embodiment is similar to the first embodiment, except that each test unit in this embodiment includes a third control valve 003, and a dye recovery unit 900 is also provided. The dye recovery unit 900 includes a dye container 901. The dye container 901 is filled with a dye 002, and has an opening at the bottom to connect with the dye pipeline. A pump 004 can also be provided on the dye pipeline.

[0043] The pump 004 in the dye recovery unit 900 is not essential. The control methods adopted when there is a pump 004 and when there is no pump 004 are different. The rest is the same as the first embodiment.

[0044] The working principle of this embodiment:

[0045] (1) When the pump 004 is present, during the test of the first test unit 200, after the container sample 001 is placed, the first air intake control valve 208 is closed, the first air exhaust control valve 213 is opened, all control valves in the second test unit 300 are closed, the third control valve 003 is opened, and the pump 004 is operated to drive the dye 002 into the test barrel body 210 of the first test unit 200. After the dye 002 is driven to completely enter the test barrel body 210, the pump 004 and the third control valve 003 are closed, and the first air exhaust control valve 213 is closed at the same time, and the first air intake control valve 208 is opened to start the test. The second test unit 300 enters the idle state, at which time the second test unit 300 can be processed after the test and prepared before the next test.

[0046] (2) When the pump 004 is present, the second test unit 300 operates in exactly the same manner as the first test unit 200. After the second test unit 300 enters the test, the first test unit 200 enters the idle state, at which time the first test unit 200 can be processed after the test and prepared for the next test.

[0047] (3) When the pump 004 does not exist, during the test of the first test unit 200, after the container sample 001 is placed, the first air intake control valve 208 is opened, the first exhaust control valve 213 is closed, the third control valve 003 is opened, all control valves in the second test unit 300 are closed, the second control valve 110 is opened, the negative pressure controller 108 is operated, the pressure in the first test unit 200 decreases, and the dye 002 is driven to enter the test barrel body 210 of the first test unit 200 under atmospheric pressure. After an appropriate amount of dye 002 enters the test barrel body 210, the second control valve 110, the negative pressure controller 108 and the third control valve 003 are closed, and the test is started. The second test unit 300 enters an idle state, at which time the second test unit 300 can be processed after the test and prepared before the next test.

[0048] (4) When the pump 004 does not exist, the second test unit 300 works in the same manner as the first test unit 200. After the second test unit 300 enters the test, the first test unit 200 enters the idle state, at which time the first test unit 200 can be processed after the test and prepared for the next test.

[0049] In summary, the container sealing performance tester of the present invention has the following beneficial effects:

[0050] 1. Simple and reasonable structure;

[0051] 2. Multiple groups of test units can be tested continuously. When one group of test units is being tested, the remaining test units can be prepared before and processed after the test, which greatly improves the test efficiency;

[0052] 3. The dye in the test barrel can be emptied before and after the test to avoid contamination of the dye and inaccurate results.

[0053] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A container sealing performance tester, characterized in that: include: A pressure control unit, comprising a module body and a positive pressure controller, a negative pressure controller, a first control valve and a second control valve arranged on the module body, and the module body is also provided with an input interface and two output interfaces; A first test unit, wherein an input interface of the first test unit is connected to an output interface of the module body through a first pipeline, and a first intake control valve is provided on the first pipeline, and an output port of the first test unit is used to be connected to a first exhaust pipeline, and a first exhaust control valve is provided on the first exhaust pipeline; A second test unit, wherein an input interface of the second test unit is connected to another output interface of the module body through a second pipeline, and a second intake control valve is provided on the second pipeline, and an output port of the second test unit is used to be connected to a second exhaust pipeline, and a second exhaust control valve is provided on the second exhaust pipeline; a dye pipeline, one end of which is connected to the first test unit, the other end of which is connected to the second test unit, and a third control valve is provided on the dye pipeline; Wherein, when the first test unit is tested, after the container sample is placed in the first test unit, the first air intake control valve is closed, the first exhaust control valve is opened, the third control valve is opened, the second air intake control valve is opened, the second exhaust control valve is closed, the first control valve is opened, the positive pressure controller works, and the pressure in the second test unit increases, driving the dye in the dye pipeline into the test barrel body of the first test unit, and after the dye completely enters the test barrel body, the first control valve, the positive pressure controller, the third control valve and the second air intake control valve are closed, and the first air intake control valve is opened to start testing, and the second test unit enters an idle state; Wherein, a pump is also provided on the dye pipeline; Wherein, the input interface on the module body is used to connect to a gas source.

2. The container sealing performance tester according to claim 1, characterized in that: When the second test unit is testing, after the container sample is placed in the second test unit, the second air intake control valve is closed, the second exhaust control valve is opened, the third control valve is opened, the first air intake control valve is opened, the first exhaust control valve is closed, the first control valve is opened, the positive pressure controller works, and the pressure in the first test unit increases, driving the dye in the dye pipeline into the test barrel body of the second test unit. After the dye completely enters the test barrel body, the first control valve, the positive pressure controller, the third control valve and the first air intake control valve are closed, and the second air intake control valve is opened to start testing, and the first test unit enters an idle state.

3. The container sealing performance tester according to claim 1, characterized in that: When the pump exists, when the first test unit is tested, after the container sample is placed in the first test unit, the first air intake control valve is closed, the first exhaust control valve and the second exhaust control valve are both opened, the third control valve is opened, and the pump works to drive the dye into the first test barrel body of the first test unit. After the dye completely enters the first test barrel body, the pump and the third control valve are closed, and the first exhaust control valve is closed at the same time, the first air intake control valve is opened to start testing, and the second test unit enters an idle state.

4. The container sealing performance tester according to claim 1, characterized in that: When the pump exists, when the second test unit is tested, after the container sample is placed in the second test unit, the second air intake control valve is closed, the second exhaust control valve and the first exhaust control valve are both opened, the third control valve is opened, and the pump works to drive the dye into the second test barrel body of the second test unit. After the dye completely enters the second test barrel body, the pump and the third control valve are closed, and the second exhaust control valve is closed at the same time, the second air intake control valve is opened to start testing, and the first test unit enters an idle state.

5. The container sealing performance tester according to claim 1, characterized in that: It also includes a dye recovery unit, which is connected to the first test unit and the second test unit respectively through a dye pipeline.

6. The container sealing performance tester according to claim 5, characterized in that: The dye recovery unit is provided with a dye container, and the dye container is used for containing the dye.

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