CN218956030U - Air tightness detection device for soft part - Google Patents
Air tightness detection device for soft part Download PDFInfo
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- CN218956030U CN218956030U CN202221586658.1U CN202221586658U CN218956030U CN 218956030 U CN218956030 U CN 218956030U CN 202221586658 U CN202221586658 U CN 202221586658U CN 218956030 U CN218956030 U CN 218956030U
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Abstract
The utility model provides an air tightness detection device of a soft part, which comprises: the device comprises an inflation regulating circuit, a switch circuit, a controller and a detection module, wherein the detection module is configured at the output end of the switch circuit and is electrically connected with the input end of the controller; the input end of the inflation regulating circuit is used for being connected with an air source, the output end of the inflation regulating circuit is connected with the input end of the switch circuit, the first output end of the switch circuit is used for being connected with a reference software piece, and the second output end of the switch circuit is used for being connected with the software piece to be detected; the inflation regulating loop is configured to provide a first pressure value of gas to the to-be-detected soft body part and the reference soft body part, so that a second pressure value of gas is provided to the to-be-detected soft body part and the reference soft body part after the to-be-detected soft body part and the reference soft body part are inflated, and the problem of low air tightness detection precision of the bathroom hose in the prior art is solved.
Description
Technical Field
The utility model relates to the field of air tightness detection, in particular to an air tightness detection device for a soft part.
Background
The air tightness detection is an important procedure in the quality detection of airtight workpieces, and is widely applied to the sealing test of modern industry. At present, most enterprises use a manual observation water test detection method, and leakage and non-leakage can be distinguished only through bubbles, and small leakage and large leakage can be distinguished through the size of the bubbles. With the rapid development of domestic manufacturing industry, the variety of products to be detected is also varied, so that air tightness detection equipment for different products is developed. The air tightness test is classified into a plurality of types according to different principles, and the method using compressed air as a test medium is widely popularized in the market due to low use cost. However, the air tightness test of the software parts such as the bathroom hose is not mature, and the detection result is often influenced by the uncertain factor of expansion in the test process of the software pipe, so that the test precision is lower, and most of enterprises also rely on manual water test for detection.
In view of this, the present application is presented.
Disclosure of Invention
The utility model discloses an air tightness detection device for a soft part, and aims to solve the problem of low air tightness detection precision of a bathroom hose in the prior art.
The embodiment of the utility model provides a device for detecting the air tightness of a soft part, which comprises the following components: the device comprises an inflation regulating circuit, a switch circuit, a controller and a detection module, wherein the detection module is configured at the output end of the switch circuit and is electrically connected with the input end of the controller;
the input end of the inflation regulating circuit is used for being connected with an air source, the output end of the inflation regulating circuit is connected with the input end of the switch circuit, the first output end of the switch circuit is used for being connected with a reference software piece, and the second output end of the switch circuit is used for being connected with the software piece to be detected;
the inflation regulating circuit is configured to first supply a first pressure value of gas to the piece to be tested and the reference piece, so that a second pressure value of gas is supplied to the piece to be tested and the reference piece after the piece to be tested and the reference piece are inflated.
Preferably, the inflation regulating circuit comprises a pressure reducing valve and an electronic proportional valve;
the input end of the pressure reducing valve is connected with the air source, the output end of the pressure reducing valve is connected with the input end of the electronic proportional valve, and the output end of the electronic proportional valve is connected with the input end of the switch loop.
Preferably, the inflation conditioning circuit further comprises: a filter, an oil mist separator, and a dryer;
the output end of the pressure reducing valve is electrically connected with the input end of the filter, the output end of the filter is connected with the input end of the oil mist separator, the output end of the oil mist separator is connected with the input end of the dryer, and the output end of the dryer is connected with the input end of the electronic proportional valve.
Preferably, the switching circuit includes a first solenoid valve and a second solenoid valve;
the input end of the first electromagnetic valve and the input end of the second electromagnetic valve are connected with the output end of the electronic proportional valve;
the output end of the first electromagnetic valve is connected with the reference software piece, and the output end of the second electromagnetic valve is connected with the software piece to be detected;
and the control end of the first electromagnetic valve and the control end of the second electromagnetic valve are electrically connected with the output end of the controller.
Preferably, the detection module comprises a pressure sensor and a pressure difference sensor which are electrically connected with the input end of the controller;
the first end of the differential pressure sensor is connected with the output end of the first electromagnetic valve, the second end of the differential pressure sensor is connected with the output end of the second electromagnetic valve, and the pressure sensor is connected with the output end of the second electromagnetic valve.
Preferably, the controller is a PLC controller.
Preferably, an exhaust circuit is also included;
the exhaust circuit is arranged between the output of the charge control circuit and the input of the switching circuit.
Preferably, the exhaust loop comprises a first exhaust valve and a second exhaust valve;
the input end of the first exhaust valve is connected with the input end of the first electromagnetic valve, the input end of the second exhaust valve is connected with the input end of the second electromagnetic valve, and the control end of the first exhaust valve and the control end of the second exhaust valve are electrically connected with the output end of the controller.
According to the air tightness detection device for the soft body part, the controller firstly starts the switch loop and controls the air pressure value of the air input to the loop by the air inflation regulating loop, so that the air inflation regulating loop firstly inflates the soft body part to be detected and the reference soft body part by the air with the first pressure value, after the soft body part to be detected and the reference soft body part are inflated, the air with the second pressure value is input to the soft body part to be detected and the reference soft body part by controlling the air inflation regulating loop, and after the soft body part to be detected and the reference soft body part are inflated, the air with the second pressure value is introduced to test, so that the test result is not influenced by the change of the volume of the workpiece, and the problem of low air tightness detection precision of the bathroom hose in the prior art is solved.
Drawings
FIG. 1 is a schematic circuit diagram of an airtight detecting device for a soft body member according to the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
The utility model discloses an air tightness detection device for a soft part, and aims to solve the problem of low air tightness detection precision of a bathroom hose in the prior art.
Referring to fig. 1, an embodiment of the present utility model provides an air tightness detection device for a software component, including: the device comprises an inflation regulating circuit 1, a switch circuit 3, a controller and a detection module 4 which is arranged at the output end of the switch circuit 3 and is electrically connected with the input end of the controller;
the input end of the inflation regulating circuit 1 is used for being connected with an air source, the output end of the inflation regulating circuit 1 is connected with the input end of the switch circuit 3, the first output end of the switch circuit 3 is used for being connected with a reference software piece 51, and the second output end of the switch circuit 3 is used for being connected with a software piece 52 to be detected;
the inflation control circuit 1 is configured to first supply a first pressure value of gas to the software part 52 to be tested and the reference software part 51, so that after the software part 52 to be tested and the reference software part 51 are inflated, a second pressure value of gas is supplied to the software part 52 to be tested and the reference software part 51.
The inventors found that: when the bathroom hose is filled with gas under pressure, the bathroom hose expands, and the expansion is nonlinear, so that the volume is increased, the test result is inaccurate, and the air tightness tester misjudges.
In this embodiment, the controller firstly opens the switch circuit 3 and controls the air pressure value of the air input to the air-charging regulation circuit 1, so that the air-charging regulation circuit 1 charges the air to be detected software 52 and the reference software 51 with a first pressure value, wherein the first pressure value is higher than the pressure value of the test air, so that the air to be detected software 52 and the reference software 51 are inflated by a certain amount, in this embodiment, the inflation amount can be determined by setting the inflation time, for example, the air time for charging the first pressure value can be set in the controller, and after the time passes, the air-charging regulation circuit 1 is adjusted, so that the air-charging regulation circuit 1 continuously charges the air to be detected software 52 and the reference software 51 with a second pressure value, wherein the second pressure value is the pressure value of the test air, so that the test result is not affected by the change of the workpiece volume, and the problem of low air tightness detection precision of the sanitary hose in the prior art is solved.
In one possible embodiment of the utility model, the charge regulation circuit 1 comprises a pressure reducing valve 15, and an electronic proportional valve 11;
the input end of the pressure reducing valve 15 is connected with the air source, the output end of the pressure reducing valve 15 is connected with the input end of the electronic proportional valve 11, and the output end of the electronic proportional valve 11 is connected with the input end of the switching circuit 3.
In this embodiment, the pressure of the gas passing through the workpiece may be adjusted by the pressure reducing valve 15 and the electronic proportional valve 11 so that the gas in the inlet circuit in the pre-charging stage is higher than the pressure value of the gas to be tested.
In one possible embodiment of the utility model, the charge air conditioning circuit 1 further comprises: a filter 14, an oil mist separator 13, and a dryer 12;
the output end of the pressure reducing valve 15 is electrically connected with the input end of the filter 14, the output end of the filter 14 is connected with the input end of the oil mist separator 13, the output end of the oil mist separator 13 is connected with the input end of the dryer 12, and the output end of the dryer 12 is connected with the input end of the electronic proportional valve 11.
It should be noted that, the filter 14 is used for filtering impurities in the air source, so as to prevent some impurities in the air from entering the workpiece to be tested, further, in this embodiment, the oil mist in the air is recovered through the oil mist separator 13, and further, in this embodiment, the air to be introduced into the loop is dried through the dryer 12, which can further improve the accuracy of the test.
In one possible embodiment of the utility model, the switching circuit 3 comprises a first solenoid valve 31, and a second solenoid valve 32;
the input end of the first electromagnetic valve 31 and the input end of the second electromagnetic valve 32 are connected with the output end of the electronic proportional valve 11;
the output end of the first electromagnetic valve 31 is connected with the reference software piece 51, and the output end of the second electromagnetic valve 32 is connected with the software piece 52 to be detected;
the control end of the first electromagnetic valve 31 and the control end of the second electromagnetic valve 32 are electrically connected with the output end of the controller.
It should be noted that, the first electromagnetic valve 31 and the second electromagnetic valve 32 are opened before the air source is opened, and still remain opened after the air with the first pressure value is introduced, the air with the second pressure value is introduced, and when the air with the second pressure value is introduced, the controller closes the first electromagnetic valve 31 and the second electromagnetic valve 32, so that the loop enters a pressure stabilizing state, and adverse effects on the test result caused by air flow fluctuation are avoided.
In one possible embodiment of the utility model, the detection module 4 comprises a pressure sensor 41 and a differential pressure sensor 42 electrically connected to the input of the controller;
the first end of the differential pressure sensor 42 is connected to the output end of the first electromagnetic valve 31, the second end of the differential pressure sensor 42 is connected to the output end of the second electromagnetic valve 32, and the pressure sensor 41 is connected to the output end of the second electromagnetic valve 32.
The pressure sensor 41 is used to observe when the first solenoid valve 31 and the second solenoid valve 32 are closed, so as to ensure that the circuit can reach a stable pressure state before testing.
The differential pressure sensor 42 is used for judging whether the product is qualified after the pressure stabilizing state, specifically, after the pressure stabilizing, whether air leakage exists between the soft workpiece to be detected and the standard part is detected by the differential pressure sensor 42, and if the air leakage exists, the differential pressure sensor 42 can be deviated.
In one possible embodiment of the present utility model, the controller may be a PLC controller.
It should be noted that, the PLC controller has a strong stability in an industrial environment, and can avoid being disturbed by a noisy environment, and of course, in other embodiments, other types of controllers, such as a single-chip microcomputer, may be used, which are not limited in detail herein, but all the schemes are within the protection scope of the present utility model.
In one possible embodiment of the utility model, an exhaust circuit 2 is also included;
the exhaust circuit 2 is arranged between the output of the charge control circuit 1 and the input of the switching circuit 3.
Specifically, in the present embodiment, the exhaust circuit 2 may include a first exhaust valve 21, a second exhaust valve 22;
the input end of the first exhaust valve 21 is connected with the input end of the first electromagnetic valve 31, the input end of the second exhaust valve 22 is connected with the input end of the second electromagnetic valve 32, and the control end of the first exhaust valve 21 and the control end of the second exhaust valve 22 are electrically connected with the output end of the controller.
The first and second exhaust valves 21 and 22 are opened to exhaust the gas in the instrument and the workpiece, and the pressure is returned to the normal atmospheric pressure, and then the first and second exhaust valves 21 and 22, the first and second electromagnetic valves 31 and 32 are closed to complete one detection cycle.
According to the air tightness detection device for the software piece, the controller firstly starts the switch loop 3 and controls the air pressure value of the air input to the loop by the air inflation regulating loop 1, so that the air inflation regulating loop 1 firstly inflates the software piece 52 to be detected and the reference software piece 51 with the air with the first pressure value, after the software piece 52 to be detected and the reference software piece 51 are inflated, the air with the second pressure value is input to the software piece 52 to be detected and the reference software piece 51 by controlling the air inflation regulating loop 1, and after the air is inflated, the air with the second pressure value is introduced to test, so that the test result is not influenced by the change of the volume of a workpiece, and the problem of low air tightness detection precision of the bathroom hose in the prior art is solved.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.
Claims (8)
1. An air tightness detection device for a soft body part, comprising: the device comprises an inflation regulating circuit, a switch circuit, a controller and a detection module, wherein the detection module is configured at the output end of the switch circuit and is electrically connected with the input end of the controller;
the input end of the inflation regulating circuit is used for being connected with an air source, the output end of the inflation regulating circuit is connected with the input end of the switch circuit, the first output end of the switch circuit is used for being connected with a reference software piece, and the second output end of the switch circuit is used for being connected with the software piece to be detected;
the inflation regulating circuit is configured to first supply a first pressure value of gas to the piece to be tested and the reference piece, so that a second pressure value of gas is supplied to the piece to be tested and the reference piece after the piece to be tested and the reference piece are inflated.
2. The device for detecting the air tightness of a soft body part according to claim 1, wherein the air inflation regulating circuit comprises a pressure reducing valve and an electronic proportional valve;
the input end of the pressure reducing valve is connected with the air source, the output end of the pressure reducing valve is connected with the input end of the electronic proportional valve, and the output end of the electronic proportional valve is connected with the input end of the switch loop.
3. The device for detecting the air tightness of a soft body according to claim 2, wherein said air-filled regulating circuit further comprises: a filter, an oil mist separator, and a dryer;
the output end of the pressure reducing valve is electrically connected with the input end of the filter, the output end of the filter is connected with the input end of the oil mist separator, the output end of the oil mist separator is connected with the input end of the dryer, and the output end of the dryer is connected with the input end of the electronic proportional valve.
4. The device for detecting the air tightness of a soft body according to claim 2, wherein the switch circuit comprises a first electromagnetic valve and a second electromagnetic valve;
the input end of the first electromagnetic valve and the input end of the second electromagnetic valve are connected with the output end of the electronic proportional valve;
the output end of the first electromagnetic valve is connected with the reference software piece, and the output end of the second electromagnetic valve is connected with the software piece to be detected;
and the control end of the first electromagnetic valve and the control end of the second electromagnetic valve are electrically connected with the output end of the controller.
5. The device of claim 4, wherein the detection module comprises a pressure sensor and a pressure difference sensor electrically connected to the input of the controller;
the first end of the differential pressure sensor is connected with the output end of the first electromagnetic valve, the second end of the differential pressure sensor is connected with the output end of the second electromagnetic valve, and the pressure sensor is connected with the output end of the second electromagnetic valve.
6. The device of claim 1, wherein the controller is a PLC controller.
7. The device for detecting the air tightness of a soft body member according to claim 4, further comprising an exhaust circuit;
the exhaust circuit is arranged between the output of the charge control circuit and the input of the switching circuit.
8. The device of claim 7, wherein the exhaust circuit comprises a first exhaust valve and a second exhaust valve;
the input end of the first exhaust valve is connected with the input end of the first electromagnetic valve, the input end of the second exhaust valve is connected with the input end of the second electromagnetic valve, and the control end of the first exhaust valve and the control end of the second exhaust valve are electrically connected with the output end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221586658.1U CN218956030U (en) | 2022-06-23 | 2022-06-23 | Air tightness detection device for soft part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221586658.1U CN218956030U (en) | 2022-06-23 | 2022-06-23 | Air tightness detection device for soft part |
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| Publication Number | Publication Date |
|---|---|
| CN218956030U true CN218956030U (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221586658.1U Active CN218956030U (en) | 2022-06-23 | 2022-06-23 | Air tightness detection device for soft part |
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| CN (1) | CN218956030U (en) |
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2022
- 2022-06-23 CN CN202221586658.1U patent/CN218956030U/en active Active
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