CN216524654U

CN216524654U - Filter detection system

Info

Publication number: CN216524654U
Application number: CN202122588720.2U
Authority: CN
Inventors: 郑龙; 郑茂鸿; 陈鑫炜; 苏魏鹏; 吴宏; 潘波
Original assignee: Maider Medical Industry Equipment Co Ltd
Current assignee: Maider Medical Industry Equipment Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-13
Anticipated expiration: 2031-10-26

Abstract

The utility model provides a filter detection system. The filter detection system includes: the image acquisition device is used for acquiring an image of the gas film; the support frame body is positioned below the image acquisition device and comprises a first installation part for installing the filter to be detected, and the first installation part is provided with a liquid inlet hole; and one end of the liquid passing pipeline is communicated with the liquid supply device, and the other end of the liquid passing pipeline is communicated with the liquid inlet hole, so that a liquid medium positioned in the liquid supply device flows to the air film through the liquid inlet hole to be contacted with the air film, and when the liquid passing pipeline is in a closed circuit state and an open circuit state, the image acquisition device respectively acquires images of the air film. The utility model effectively solves the problem of incomplete detection on the processing quality of the filter in the prior art.

Description

Filter detection system

Technical Field

The utility model relates to the technical field of filter performance detection, in particular to a filter detection system.

Background

At present, an air film of a precision filter is connected with a filter body mainly by two modes of ultrasonic welding and common welding. After the air film and the filter body are welded, it is usually only detected whether the air film surface is stained or whether the air film is damaged.

However, it cannot be determined whether or not the processing quality of the filter satisfies the processing requirement only by the above detection, and the reliability of the use of the filter is affected.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a filter detection system to solve the problem of incomplete detection of the processing quality of a filter in the prior art.

In order to achieve the above object, the present invention provides a filter inspection system including: the image acquisition device is used for acquiring an image of the air film; the supporting frame body is positioned below the image acquisition device and comprises a first mounting part for mounting the filter to be detected, and the first mounting part is provided with a liquid inlet hole; and one end of the liquid passing pipeline is communicated with the liquid supply device, and the other end of the liquid passing pipeline is communicated with the liquid inlet hole, so that a liquid medium positioned in the liquid supply device flows to the air film through the liquid inlet hole to be contacted with the air film, and when the liquid passing pipeline is in a closed circuit state and an open circuit state, the image acquisition device respectively acquires images of the air film.

Further, the filter detection system further comprises: the first light source is positioned below the image acquisition device and used for providing light rays for the image acquisition device; when the liquid communication pipeline is in an open circuit state, the first light source is in a light-emitting state to emit light; when the liquid through pipeline is in the on state, the first light source is in the off state.

Further, the first light source is an annular light source, and an orthographic projection of the annular light source on the filter to be detected is positioned outside the filter to be detected.

Further, the filter detection system further comprises: the second light source is positioned below the support frame body and used for providing light rays for the filter to be detected; when the liquid communication pipeline is in an open circuit state, the second light source is in a non-working state; when the liquid through pipeline is in the passage state, the second light source is in the light-emitting state to emit light.

Further, the liquid inlet hole is located on one side, away from the image acquisition device, of the first installation part, so that liquid entering the liquid inlet hole is in contact with one side, away from the image acquisition device, of the air film.

Furthermore, the support frame body also comprises a second mounting part for mounting the filter to be detected, and the first mounting part and the second mounting part are arranged at intervals; the image acquisition devices are at least two, at least one image acquisition device is arranged corresponding to the first installation part, and at least one image acquisition device is arranged corresponding to the second installation part.

Further, orthographic projections of the first and second mounting portions on the second light source are located within the second light source.

Furthermore, the number of the first light sources is at least two, and the at least two first light sources and the at least two image acquisition devices are arranged in a one-to-one correspondence manner.

Further, the filter detection system further comprises: the liquid inlet part of the water storage structure is positioned below the support frame body, so that liquid flowing out of the liquid inlet hole flows into the water storage structure through the liquid inlet part to be stored.

Further, along the height direction of the filter detection system, the first light source is positioned between the image acquisition device and the filter to be detected.

By applying the technical scheme of the utility model, the filter detection system is used for detecting the sealing property of the joint of the filter body of the filter to be detected and the air film. Therefore, when the sealing performance of the joint of the air film and the filter body needs to be detected, the liquid passing pipeline is in an open circuit state, and the image acquisition device acquires a first image of the joint of the air film and the filter body. The liquid pipeline is operated again, so that the liquid pipeline is switched to the passage state from the open circuit state, the second image of the connection position of the air film and the filter body is acquired by the image acquisition device, the sealing performance of the connection position of the air film and the filter body is obtained by comparing the first image and the second image, and the problem that the detection of the processing quality of the filter in the prior art is incomplete is solved, so that the detection of the processing quality of the filter to be detected by a worker is easier and more convenient, and the detection difficulty is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a filter detection system according to the utility model.

Wherein the figures include the following reference numerals:

10. a filter to be tested; 20. an image acquisition device; 30. a support frame body; 31. a first mounting portion; 311. a liquid inlet hole; 32. a second mounting portion; 40. a liquid passing pipeline; 50. a first light source; 60. a second light source.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless stated to the contrary, use of the directional terms "upper and lower" are generally directed to the orientation shown in the drawings, or to the vertical, or gravitational direction; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the respective member itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the detection of the processing quality of a filter in the prior art is incomplete, the application provides a filter detection system.

As shown in fig. 1, the filter inspection system includes an image capturing device 20, a support frame 30, and a liquid conduit 40. Wherein the image acquisition device 20 is used for acquiring an image of the air film. The support frame 30 is located below the image capturing device 20, the support frame 30 includes a first mounting portion 31 for mounting the filter 10 to be tested, and the first mounting portion 31 has a liquid inlet hole 311. One end of the liquid passing pipeline 40 is communicated with the liquid supply device, the other end of the liquid passing pipeline 40 is communicated with the liquid inlet hole 311, so that liquid medium in the liquid supply device flows to the air film through the liquid inlet hole 311 to be in contact with the air film, and when the liquid passing pipeline 40 is in a closed circuit state and an open circuit state, the image acquisition device 20 respectively acquires images of the air film.

By applying the technical scheme of the embodiment, the filter detection system is used for detecting the sealing performance of the joint of the filter body of the filter 10 to be detected and the air film. Thus, when the sealing performance of the connection between the air film and the filter body needs to be detected, the liquid communication pipeline 40 is in the open circuit state, and the image acquisition device 20 acquires a first image of the connection between the air film and the filter body. And then the liquid passing pipeline 40 is operated so that the liquid passing pipeline 40 is switched from the open circuit state to the closed circuit state, the second image of the joint of the air film and the filter body is acquired by the image acquisition device 20, the sealing performance of the joint of the air film and the filter body is obtained by comparing the first image with the second image, and the problem of incomplete detection of the processing quality of the filter in the prior art is further solved, so that the detection of the processing quality of the filter 10 to be detected by a worker is easier and simpler, and the detection difficulty is reduced.

In this embodiment, the filter test system includes a membrane face test and a leak test. Wherein, the film surface detection is used for judging whether the film surface has damage or dirt or is intact, and the sealing performance detection is used for judging the welding effect.

In this embodiment, if the sealing performance of the joint between the filter body and the air film is not good, when the liquid passing pipe 40 is in the passage state, the liquid flows to the air film through the liquid inlet hole 311 and flows into the filter 10 to be tested through the joint between the filter body and the air film, and the images displayed by the first image and the second image are inconsistent; if the sealing performance of the joint between the filter body and the air film is good, when the liquid passing pipeline 40 is in a passing state, the liquid flows to the air film through the liquid inlet hole 311, but cannot flow into the filter 10 to be detected through the joint between the filter body and the air film, and then the first image and the second image are the same.

As shown in fig. 1, the filter detection system further comprises a first light source 50. The first light source 50 is located below the image capture device 20 for providing light to the image capture device 20. When the liquid pipeline 40 is in the off state, the first light source 50 is in the light emitting state to emit light. When the liquid conduit 40 is in the on state, the first light source 50 is in the off state. Thus, the above arrangement of the first light source 50 makes the first image clearer. When the liquid passing pipe 40 is in the passage state, the first light source 50 is in the non-working state, so that the second image is clearer, and the sealing detection precision is further improved.

In the present embodiment, the first light source 50 is located between the image capturing device 20 and the filter 10 to be tested along the height direction of the filter testing system, so that the structural layout of the filter testing system is more reasonable and compact.

It should be noted that the position of the first light source 50 is not limited to this, as long as light can be provided to the image capturing device 20. Optionally, the first light source 50 is located at a side of the image capture device 20.

In the present embodiment, the first light source 50 is an annular light source, and an orthographic projection of the annular light source on the filter 10 to be tested is positioned outside the filter 10 to be tested. Like this, above-mentioned setting ensures can not show the image of first light source 50 in the first image, and the staff of being convenient for judges first image and second image, has reduced the judgement degree of difficulty, has also promoted filter detecting system's leakproofness and has detected the precision. Meanwhile, the arrangement makes the light provided by the first light source 50 to the image acquisition device 20 more uniform and consistent, and avoids generating black spots or black blocks on the first image.

As shown in fig. 1, the filter detection system further comprises a second light source 60. The second light source 60 is located below the support frame 30 to provide light to the filter 10 to be tested. Wherein, when the liquid passage pipe 40 is in the off state, the second light source 60 is in the non-working state. When the liquid passage line 40 is in the passage state, the second light source 60 is in the light emitting state to emit light. In this manner, the second light source 60 provides backlighting for the filter 10 to be tested, facilitating the acquisition of a second image by the worker.

Specifically, in the process of acquiring the first image by the image acquisition device 20, the liquid flowing pipeline 40 is in the off state, the second light source 60 is in the non-working state, and only the first light source 50 is in the light emitting state, so that the first image is clearer. After the image acquisition device 20 collects the first image, the liquid passing pipeline 40 is operated to enable the liquid passing pipeline 40 to be in a passage state, the first light source is in a non-working state, only the second light source 60 is in a light-emitting state, so that the second image is clearer, the staff can compare the first image with the second image conveniently, and the sealing detection precision is further improved.

As shown in fig. 1, the liquid inlet hole 311 is located on a side of the first mounting portion 31 away from the image capturing device 20, so that the liquid entering the liquid inlet hole 311 contacts a side of the air film away from the image capturing device 20. In this way, only if the seal at the connection of the filter body and the air film is poor, liquid will enter the side of the air film facing the image acquisition device 20 and be displayed in the second image. If the leakproofness of the junction of filter body and air film is good, liquid can not get into one side of air film towards image acquisition device 20, also can not appear in the second image yet, and then has promoted filter detecting system's detection precision.

Optionally, the support frame 30 further includes a second mounting portion 32 for mounting the filter 10 to be tested, and the first mounting portion 31 and the second mounting portion 32 are spaced apart. The number of the image acquisition devices 20 is at least two, at least one image acquisition device 20 is arranged corresponding to the first mounting part 31, and at least one image acquisition device 20 is arranged corresponding to the second mounting part 32. As shown in fig. 1, the support frame 30 further includes a second mounting portion 32 for mounting the filter 10 to be tested, and the first mounting portion 31 and the second mounting portion 32 are spaced apart from each other. The number of the image capturing devices 20 is two, one image capturing device 20 is disposed corresponding to the first mounting portion 31, and the other image capturing device 20 is disposed corresponding to the second mounting portion 32. In this way, the two image capturing devices 20 can be used simultaneously, so that the filter detection system can simultaneously detect the quality of the two filters 10 to be detected, thereby improving the detection efficiency of the filter detection system.

Specifically, the first mounting portion 31 is used for detecting the sealing performance of the joint of the air film and the filter body of the filter 10 to be detected, namely air film water detection. The second mounting portion 32 is used for detecting whether the membrane surface of the air membrane of the filter 10 to be detected is damaged or whether dirt or pollution exists on the membrane surface, namely membrane surface detection, and the first mounting portion 31 and the second mounting portion 32 can be used at the same time, so that the detection efficiency of the filter detection system is improved.

In this example, the membrane surface assay was: the film surface of the air film is illuminated by the first light source 50, and the picture taken by the image acquisition device 20 is a first image and a gray image. If the film surface is intact and has no flaws, the film surface in the first image is white; if the film surface is damaged, the image of the damaged part is gray or black, and can be distinguished; if the film surface has stains or pollution, the images of the stains are gray or black, and can be distinguished. Therefore, when the first image captured by the image pickup device 20 is analyzed by the irradiation of the first light source 50 and a small area (a test value can be obtained by testing defective products including stains and/or film surface damages) having a gray scale value lower than a certain threshold value appears in the film surface area, it is determined that there is a damage or stain on the film surface.

In this example, the air film water test is: since the air film bonding line is black when irradiated by the first light source 50, it cannot be identified. Therefore, when the first light source 50 is turned off and the second light source 60 is used for illumination (backlight illumination), the film surface is displayed in a gray black color and the bonding wires are displayed in a white color in the second captured image, so that the discrimination can be performed. In addition, as liquid cannot pass through a perfect gas film, the liquid can only leak out if a gap exists at the welding position and the welding effect is not good. Thus, by injecting water to the back of the air film, if there is a welding problem, water drops may leak out from the ring of the welding line; if no water drops leak from the ring of the welding line part, the welding effect is good. Specifically, in the second image, if there is a water drop in the welding line ring, the edge of the water drop will be displayed as gray black; if no water drop exists, the welding wire is white within the circular ring. Therefore, after water is injected, the shot second image is analyzed by using backlight irradiation, and if a gray black line with a gray value lower than a certain threshold value appears in the range of the welding wire ring, or a bulge with a gray black edge appears on the inner ring and the outer ring of the ring, or a circle with a gray black edge appears (a test value can be obtained by testing defective products with water leakage), the gas film welding effect is judged to be poor.

The number of the mounting portions on the support frame 30 is not limited to this, and can be adjusted according to the use requirement. Optionally, the support frame 30 further comprises a third mounting portion and/or a fourth mounting portion and/or a fifth mounting portion and/or a sixth mounting portion for mounting the filter 10 to be tested.

The number of the image capturing devices 20 is not limited to this, and may be the same as the number of the mounting portions on the support frame 30. Optionally, the image acquisition arrangement 20 is three or four or five or six.

As shown in fig. 1, orthographic projections of the first and second mounting

portions

31 and 32 on the second light source 60 are located within the second light source 60. Thus, the two filters 10 to be detected on the first mounting part 31 and the second mounting part 32 share one second light source 60, so that the number of the second light sources 60 is reduced, and on one hand, the processing cost of the filter detection system is reduced; on the other hand, the number of parts of the filter detection system is reduced, so that the filter detection system is easier and simpler to disassemble and assemble, and the labor intensity of workers is reduced.

In the present embodiment, the second light source 60 is a bar light source.

Optionally, there are at least two first light sources 50, and at least two first light sources 50 are disposed in one-to-one correspondence with at least two image capturing devices 20. As shown in fig. 1, there are two first light sources 50, and the two first light sources 50 are disposed in one-to-one correspondence with the two image capturing devices 20. Therefore, the definition of the first image is ensured by the arrangement, and the first image and the second image are compared by a worker conveniently.

In this embodiment, the filter detection system further comprises a water storage structure. The liquid inlet portion of the water storage structure is located below the support frame 30, so that the liquid flowing out of the liquid inlet hole 311 flows into the water storage structure through the liquid inlet portion for storage. Therefore, the filter detection system is tidier due to the arrangement, and liquid is prevented from flowing out of the water storage structure and sliding to workers.

The application also provides a detection method of the filter processing quality, which is suitable for the filter detection system, wherein the detection method comprises membrane surface detection and tightness detection, and the two detections are independent. Therefore, the film surface and the welding effect of the product can be detected at the same time at one station, and extra detection at multiple processing stations is not needed.

Specifically, the sealability test was: the liquid passing pipeline is in a passage state, the second light source is in a light-emitting state, the collected image is compared with a preset threshold value (a test value can be obtained by testing defective products with water leakage), and the welding effect is judged.

Specifically, the quality detection of the membrane surface is as follows: and (3) making the liquid through pipeline in a short-circuit state, making the first light source in a light-emitting state, and judging whether the membrane surface is damaged or stained or intact when the acquired image is compared with a preset threshold value (a test value can be obtained by testing defective products with stains or damaged membrane surfaces).

In this embodiment, the detection steps of the filter detection system are as follows:

1) after the filter to be detected is installed in place, the first light source is controlled to emit light, the image acquisition device starts shooting to acquire a first image and output an acquisition result (1 is unqualified, and 0 is qualified);

2) turning off the first light source, and operating the liquid communication pipeline to inject water into the filter to be detected through the liquid communication pipeline, wherein the water injection time is 2 s;

3) after the water injection is finished, starting a second light source, and starting shooting by the image acquisition device to acquire a second image and output an acquisition result;

4) and performing logical operation on the two acquisition results and outputting the results so as to judge the sealing property of the joint of the air film and the filter body.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the filter detection system is used for detecting the sealing performance of the joint of the filter body of the filter to be detected and the air film. Therefore, when the sealing performance of the joint of the air film and the filter body needs to be detected, the liquid passing pipeline is in an open circuit state, and the image acquisition device acquires a first image of the joint of the air film and the filter body. The liquid pipeline is operated again, so that the liquid pipeline is switched to the passage state from the open circuit state, the second image of the connection position of the air film and the filter body is acquired by the image acquisition device, the sealing performance of the connection position of the air film and the filter body is obtained by comparing the first image and the second image, and the problem that the detection of the processing quality of the filter to be detected in the prior art is incomplete is solved, so that the detection of the processing quality of the filter by a worker is easier and more convenient, and the detection difficulty is reduced.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter testing system, comprising:

the image acquisition device (20) is used for acquiring an image of the air film;

the support frame body (30) is positioned below the image acquisition device (20), the support frame body (30) comprises a first mounting part (31) for mounting the filter (10) to be detected, and the first mounting part (31) is provided with a liquid inlet hole (311);

and one end of the liquid passing pipeline (40) is communicated with a liquid supply device, the other end of the liquid passing pipeline (40) is communicated with the liquid inlet hole (311), so that a liquid medium in the liquid supply device flows to the air film through the liquid inlet hole (311) to be in contact with the air film, and the image acquisition device (20) respectively acquires images of the air film when the liquid passing pipeline (40) is in a closed circuit state and an open circuit state.

2. The filter detection system of claim 1, further comprising:

a first light source (50), the first light source (50) being located below the image acquisition device (20) for providing light to the image acquisition device (20);

wherein, when the liquid passage pipeline (40) is in the open circuit state, the first light source (50) is in a light-emitting state to emit light; when the liquid passage pipeline (40) is in the passage state, the first light source (50) is in a non-working state.

3. A filter testing system according to claim 2, wherein the first light source (50) is an annular light source, the orthographic projection of which on the filter to be tested (10) is outside the filter to be tested (10).

4. The filter detection system of claim 2, further comprising:

a second light source (60) located below the support frame (30) for providing light to the filter (10) to be tested;

wherein, when the liquid passage pipeline (40) is in the open circuit state, the second light source (60) is in a non-working state; when the liquid passage pipeline (40) is in the passage state, the second light source (60) is in a light-emitting state to emit light.

5. A filter detection system as claimed in claim 1, wherein the inlet opening (311) is located on a side of the first mounting portion (31) remote from the image capture device (20) such that liquid entering the inlet opening (311) contacts a side of the gas film remote from the image capture device (20).

6. The filter testing system according to claim 4, wherein the support frame body (30) further comprises a second mounting portion (32) for mounting the filter (10) to be tested, the first mounting portion (31) and the second mounting portion (32) being spaced apart; the image acquisition device (20) is two at least, at least one image acquisition device (20) with first installation department (31) correspond the setting, at least one image acquisition device (20) with second installation department (32) correspond the setting.

7. A filter detection system as claimed in claim 6, wherein an orthographic projection of the first and second mounts (31, 32) on the second light source (60) is located within the second light source (60).

8. The filter testing system of claim 6, wherein the number of the first light sources (50) is at least two, and at least two of the first light sources (50) are disposed in one-to-one correspondence with at least two of the image capturing devices (20).

9. The filter testing system of claim 1, further comprising:

the liquid inlet part of the water storage structure is positioned below the support frame body (30) so that liquid flowing out of the liquid inlet hole (311) flows into the water storage structure through the liquid inlet part to be stored.

10. A filter testing system according to claim 2, wherein the first light source (50) is located between the image acquisition device (20) and the filter (10) to be tested in the height direction of the filter testing system.