CN114669131A - Device and method for intelligently detecting blockage of bag-type dust collector - Google Patents
Device and method for intelligently detecting blockage of bag-type dust collector Download PDFInfo
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- 239000000428 dust Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000000007 visual effect Effects 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 claims description 43
- 239000008188 pellet Substances 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 2
- 239000003086 colorant Substances 0.000 abstract 2
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- 238000012423 maintenance Methods 0.000 description 2
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- 229920000426 Microplastic Polymers 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0095—Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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Abstract
The invention relates to a device for intelligently detecting blockage of a bag-type dust collector, which comprises a visual identification module and a detection module, wherein the detection module comprises a transparent cylinder and light balls with colors, the transparent cylinder is embedded into the top surface of an output pipeline, the light balls are positioned in the transparent cylinder, the bottom surface of the transparent cylinder is provided with an opening, the transparent cylinder is communicated with the output pipeline through the opening, the diameter of the opening is smaller than that of the light balls, the visual identification module is used for detecting the state of the light balls with colors in the transparent cylinder, the scanning area of the visual identification module is the part of the transparent cylinder, which is positioned on the top surface of the output pipeline, the height of the part of the transparent cylinder, which is embedded into the output pipeline, is larger than the diameter of the light balls, and the light balls can be made of plastics, and the invention aims to provide the device and the method for intelligently detecting blockage of the bag-type dust collector, the pulse electromagnetic valve is used for detecting the actual operation condition of a single cloth bag and whether the pulse electromagnetic valve operates normally.
Description
Technical Field
The invention relates to the technical field of bag-type dust remover detection, in particular to a device and a method for intelligently detecting blockage of a bag-type dust remover.
Background
The bag-type dust collector is a dry dust collector commonly used in the production industry, the bag-type dust collector is suitable for collecting fine and dry non-fibrous dust, and has high dust collection efficiency, so the bag-type dust collector is welcomed, a filter bag of the bag-type dust collector is made of woven filter cloth or non-woven felt, gas containing dust is filtered by utilizing the filtering action of fiber fabric, when the gas containing dust enters the bag-type dust collector, dust with large particles and large specific gravity can be settled down due to the action of gravity and falls into an ash hopper, when the gas containing fine dust passes through the filter bag, the fine dust in the gas can be blocked by the filter cloth, so that the gas originally containing the dust is purified, most of the blockage of the bag is caused by the damage of a pulse electromagnetic valve, so that the blowing can not be carried out, and when the time is long, the dust on the surface of the bag can be blocked, the existing bag-type dust collector detects the front-back pressure difference of a bag by installing a differential pressure transmitter at the inlet and the outlet of the dust collector, and is used for monitoring whether the dust collector is in a blocked state or not, but the method can only judge whether the whole dust collector is blocked or not and cannot detect the actual operation condition of each bag in the dust collector, when a single bag of the dust collector is blocked or a pulse electromagnetic valve is damaged, a worker cannot process the single bag at the first time, the efficiency of the bag-type dust collector is possibly reduced, faults can be caused in serious conditions, and environmental protection accidents occur, so that the device and the detection method for detecting the actual operation condition of the single bag and whether the pulse electromagnetic valve is normal are provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for intelligently detecting blockage of a bag-type dust collector, which are used for detecting the actual running condition of a single bag and whether a pulse electromagnetic valve runs normally.
The technical purpose of the invention is realized by the following technical scheme:
a device for intelligently detecting blockage of a bag-type dust collector comprises a visual identification module and a detection module;
the detection module comprises a transparent cylinder and colored light balls, the transparent cylinder is embedded into the top surface of the output pipeline, the light balls are positioned in the transparent cylinder, an opening is formed in the bottom surface of the transparent cylinder, the transparent cylinder is communicated with the output pipeline through the opening, and the diameter of the opening is smaller than that of the light balls;
the visual recognition module is used for detecting the state of the colored light pellets in the transparent cylinder, and the scanning area of the visual recognition module is the part of the transparent cylinder, which is positioned on the top surface of the output pipeline.
In one embodiment, the height of the transparent cylinder embedded in the output pipeline part is larger than the diameter of the light-weight small ball.
In one embodiment, the light-weight pellet may be made of plastic.
In one embodiment, the visual recognition module detects a plurality of light pellets arranged in different output pipelines at the same time.
In one embodiment, the device for intelligently detecting blockage of the bag-type dust collector comprises an upper computer used for sending information and receiving feedback information, wherein the upper computer is in communication connection with a visual identification module, and the visual identification module is in communication connection with a programmable logic controller for controlling a pulse electromagnetic valve.
In one embodiment, the device for intelligently detecting blockage of the bag-type dust collector comprises an alarm for reminding workers to process, wherein the alarm is electrically connected with an upper computer.
A detection method for intelligently detecting blockage of a bag-type dust collector comprises the following steps;
when the pulse electromagnetic valve is not electrified, compressed air does not exist in the output pipeline, and the light ball is positioned at the bottom of the transparent cylinder;
when the pulse solenoid valve is electrified, compressed air passes through the output pipeline, the light small balls are blown to the top of the transparent cylinder from the bottom of the transparent cylinder by the compressed air, the pulse solenoid valve is normal when the vision recognition module detects that the light small balls appear, and the pulse solenoid valve is abnormal when the vision recognition module does not detect that the light small balls appear;
When the pulse electromagnetic valve is powered off, compressed air is discharged from the output pipeline, and the light small ball falls back to the bottom from the top of the transparent cylinder;
if the visual recognition module can still detect the light small balls, the light small balls do not fall back, the cloth bag is indicated to be blocked, and if the visual recognition module does not detect the light small balls, the cloth bag is indicated to be normal.
In one embodiment, the programmable logic controller numbers the output pipeline, the visual identification module is provided with a number corresponding to the output pipeline for the light ball, and when the visual identification module detects that the abnormity exists, the abnormity information is fed back to the upper computer and the corresponding number and the abnormity reason are displayed.
In one embodiment, when the visual recognition module detects abnormal information and feeds the abnormal information back to the upper computer, the alarm gives an alarm sound to remind a worker to process the abnormal information.
In one embodiment, after the pulse electromagnetic valve is powered off, the visual detection module detects that the light small balls with the corresponding numbers do not fall back immediately but fall back within 1-2 seconds, the visual identification module feeds back abnormal information to the upper computer, displays the numbers and reasons corresponding to the abnormalities, and the alarm does not send alarm information.
In conclusion, the invention has the following beneficial effects:
on the basis of the original bag-type dust collector, the transparent cylinder and the light balls are used as detection devices, and the combination of the programmable logic controller and the visual identification module is used, so that whether the bag is blocked or not and whether the pulse electromagnetic valve is damaged or not can be accurately detected, the blockage bag can be fed back to field workers at the first time, the blocked bag is cleaned, the damaged pulse electromagnetic valve is replaced, the service life of the bag-type dust collector can be prolonged, the occurrence of environmental protection accidents is reduced, the real-time monitoring is carried out, and the labor intensity of spot inspection workers is reduced.
Drawings
FIG. 1 is a schematic view of the detecting unit;
FIG. 2 is a process of operation of the detection module when the bag-type dust collector is in a normal state;
FIG. 3 is a running process of the detection module when the state of the electromagnetic valve of the bag-type dust collector is abnormal;
fig. 4 is an operation process of the detection module when the bag-type dust collector is in an abnormal bag state.
In the figure: 1-an output pipeline; 2-a transparent cylinder; 3-light pellets; 4-opening.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
As shown in fig. 1-4, a device for intelligently detecting blockage of a bag-type dust collector comprises a visual identification module and a detection module;
the detection module comprises a transparent cylinder 2 and colored light pellets 3, the transparent cylinder 2 is embedded into the top surface of the output pipeline 1, the light pellets 3 are positioned in the transparent cylinder 2, an opening 4 is formed in the bottom surface of the transparent cylinder 2, the transparent cylinder 2 is communicated with the output pipeline 1 through the opening 4, and the diameter of the opening 4 is smaller than that of the light pellets 3;
the visual recognition module is used for detecting the state of the colored light pellets 3 in the transparent cylinder 2, and the scanning area of the visual recognition module is the part of the transparent cylinder 2, which is positioned on the top surface of the output pipeline 1.
The height of the part of the transparent cylinder 2 embedded into the output pipeline 1 is larger than the diameter of the light-weight small ball 3.
The light weight pellets 3 may be of a plastic material. The light pellets 3 are colored plastic pellets, the weight is small, the light pellets can also be other light colored pellets, the light pellets 3 can be easily blown by compressed air, the transparent cylinder 2 is communicated with the output pipeline 1, the transparent cylinder 2 and the output pipeline 1 form a closed space, the light pellets 3 are positioned in the transparent cylinder 2, the bottom of the transparent cylinder 2 is provided with an opening 4, the diameter of the opening 4 is smaller than that of the light pellets 3, so that the light pellets 3 cannot be separated from the transparent cylinder 2 from the opening 4, the compressed air can be filled into the transparent cylinder 2 from the opening 4, the light pellets 3 are blown to the top of the transparent cylinder 2 from the bottom of the transparent cylinder 2, whether the compressed air exists in the output pipeline 1 is judged by observing whether the light pellets 3 appear on the top of the transparent cylinder 2 when the electromagnetic valve is electrified, whether the electromagnetic valve is damaged or not is judged, after the pulse electromagnetic valve is closed, whether the light small balls 3 fall back from the top of the transparent cylinder 2 or not is observed, whether compressed air in the output pipeline 1 is discharged or not is judged, and if the compressed air in the pipeline is not discharged, a cloth bag is possibly blocked, so that the compressed air cannot be discharged;
The visual identification module judges whether the light globule 3 appears at the top of the transparent cylinder body 2 by detecting the color of the light globule 3, the light globule 3 can be red, also can be blue or green, because a part of the transparent cylinder body 2 is embedded into the output pipeline 1, and the height of the part of the transparent cylinder body 2 in the output pipeline 1 is larger than the diameter of the light globule 3, when the light globule 3 is positioned at the bottom of the transparent cylinder body 2, the light globule 3 can not be seen outside the output pipeline 1, the color can not be detected, when the light globule 3 is blown to the top of the transparent cylinder body 2 by compressed air, the light globule 3 with the color can only be detected outside the output pipeline 1.
The visual recognition module detects a plurality of light pellets 3 arranged in different output pipelines 1 simultaneously. The detection module can be a detection module which is arranged on a plurality of output pipelines 1 and is simultaneously identified by one wide-angle lens visual identification camera, and also can be a detection module which is simultaneously identified by a plurality of visual identification cameras for a plurality of output pipelines 1.
The device for intelligently detecting blockage of the bag-type dust collector comprises an upper computer used for sending information and receiving feedback information, wherein the upper computer is in communication connection with a visual identification module, and the visual identification module is in communication connection with a programmable logic controller used for controlling a pulse electromagnetic valve. The upper computer can be a computer, can be used for feeding back data in real time, and can also be used for sending instruction information, for example, sending an alarm eliminating device or suspending detection on a certain output pipeline 1.
The utility model provides a device that intellectual detection system sack cleaner blockked up is including being used for reminding the staff to carry out the alarm of handling, alarm and host computer electromechanical connection. The alarm can be a buzzer, when the alarm information of feedback is received to the host computer, the host computer can make the alarm send the chimes of doom through relay and circuit to this reminds the staff very first time to handle unusually, avoids sack cleaner efficiency to descend, or takes place the environmental protection accident.
A detection method for intelligently detecting blockage of a bag-type dust collector comprises the following steps;
when the pulse electromagnetic valve is not electrified, compressed air does not exist in the output pipeline 1, and the light small ball 3 is positioned at the bottom of the transparent cylinder 2;
when the pulse electromagnetic valve is electrified, compressed air passes through the output pipeline 1, the light small balls 3 are blown to the top of the transparent cylinder 2 from the bottom of the transparent cylinder 2 by the compressed air, the vision recognition module detects that the light small balls 3 appear, the pulse electromagnetic valve is normal, and if the vision recognition module does not detect that the light small balls 3 appear, the pulse electromagnetic valve is abnormal;
when the pulse electromagnetic valve is powered off, compressed air is discharged from the output pipeline 1, and the light small balls 3 fall back to the bottom from the top of the transparent cylinder 2;
If the visual recognition module can still detect the light small balls 3 and the light small balls 3 do not fall back, the cloth bag is blocked, and if the visual recognition module does not detect the light small balls 3, the cloth bag is normal. The visual recognition module depends on the light ball 3 appearing at the top of the transparent cylinder 2 as a signal that compressed air exists in the output pipeline 1, when the pulse electromagnetic valve is opened, the compressed air should exist in the output pipeline 1, if the light ball 3 does not appear, it is indicated that no compressed air exists in the output pipeline 1, the pulse electromagnetic valve is possibly damaged, the compressed air is not switched on, when the light ball 3 still appears at the top of the transparent cylinder 2 after the pulse electromagnetic valve is closed, it is indicated that the compressed air still exists in the output pipeline 1 and is not discharged, and the compressed air is possibly not discharged in time due to the blockage of the cloth bag.
The programmable logic controller numbers the output pipeline 1, the light ball 3 is provided with a number corresponding to the output pipeline 1 by the visual identification module, and when the visual identification module detects that the abnormity exists, the abnormal information can be fed back to the upper computer and the corresponding number and the abnormal reason are displayed. Carry out corresponding serial number with a plurality of output pipeline 1 and light bobble 3, make the system open or close according to certain pulse solenoid valve, compare with the state of light bobble 3, reach whether to have abnormal conditions, also avoid the vision identification module to think the light bobble 3 that is in normal condition is abnormal state by mistake, and carry out corresponding serial number and also make staff's maintenance or point when examining more convenient.
When the visual identification module detects abnormal information and feeds the abnormal information back to the upper computer, the alarm can give an alarm sound to remind a worker to process. When the visual identification module detects that there is abnormal state, except that the specific serial number that feeds back abnormal information to the host computer and show abnormal information and unusual reason, the host computer also can start the alarm and send out the alarm sound, when hearing the alarm sound after the staff at the scene, can go to look over immediately to handle the abnormal conditions very first time, avoid leading to the sack cleaner to break down, or efficiency descends, lead to the emergence of environmental protection accident.
When the pulse electromagnetic valve is powered off, the visual detection module detects that the light ball 3 corresponding to the serial number does not fall back immediately but falls back within 1-2 seconds, the visual identification module feeds the abnormal information back to the upper computer, the serial number corresponding to the abnormality and the abnormal reason are displayed, and the alarm does not send alarm information. After the programmable logic controller starts the pulse electromagnetic valve with a certain number, the visual identification module detects that the corresponding light small ball 3 appears at the top of the transparent cylinder body 2, but after the pulse electromagnetic valve with the certain number is closed, the corresponding light small ball 3 does not immediately fall back, the visual identification module can still detect the light small ball 3, and between 1 and 2, the light small ball 3 with the corresponding number falls back to the bottom from the top of the transparent cylinder body 2, so that the situation that the cloth bag is possibly blocked can be judged, when the cloth bag is not completely blocked, the visual identification module can feed abnormal information back to the upper computer at the moment, the upper computer can also display the abnormal situation, but the alarm can not give out alarm sound, and the worker can select to check at regular time without maintenance.
When the programmable logic controller starts at least one pulse electromagnetic valve, the visual recognition module does not recognize that the light small ball 3 appears on the top of the transparent cylinder 2 in the output pipeline 1 with the corresponding number, the electromagnetic valve is judged to be damaged, the visual recognition module feeds back abnormal information to the upper computer, the upper computer receives the feedback information, displays the number of the abnormal information and the information of the abnormal reason, and enables the alarm to give an alarm sound to inform a worker to go to process;
if the visual recognition module recognizes that the light small ball 3 appears at the top of the transparent cylinder 2 at the output pipeline 1 with the corresponding number, the electromagnetic valve is judged to be normal, and the visual recognition module does not feed back abnormal information. After the pulse solenoid valve starts, compressed air will pass through from output pipeline 1, atmospheric pressure can be with light pellet 3 from the bottom jack-up of transparent barrel 2's top, if the vision identification module does not detect light pellet 3 and appear when having started on the output pipeline 1 of pulse solenoid valve, the side probably is the solenoid valve damage, make not put through compressed air in the output pipeline 1, the abnormal information of vision identification module feedback is to the host computer, the host computer receives feedback information and shows the number that appears abnormal information and the information of unusual reason, and make the alarm send the police dispatch newspaper sound, inform the staff to go to and handle.
When the programmable logic controller closes at least one of the electromagnetic valves after opening the pulse electromagnetic valve, the visual recognition module can still recognize that the light small ball 3 appears on the top of the transparent cylinder 2 at the output pipeline 1 with the corresponding number, the cloth bag is judged to be blocked, the visual recognition module feeds back abnormal information to the upper computer, the upper computer receives the feedback information and displays the number of the abnormal information and the information of the abnormal reason, and the alarm gives an alarm sound to inform a worker to go to process;
if the vision recognition module recognizes that the light small balls 3 fall back to the bottom of the transparent cylinder 2 at the output pipeline 1 with the corresponding number, the cloth bag is judged to be normal, and the vision recognition module does not feed back abnormal information. When the pulse solenoid valve is closed after being opened for a period of time, compressed air in the output pipeline 1 should be discharged through the cloth bag, when compressed air does not exist in the output pipeline 1, the light globule 3 should fall back to the bottom of the transparent cylinder 2, because compressed air does not exist to apply force to the light globule, if after closing the pulse solenoid valve, when the light globule 3 of corresponding number is still at the top of the transparent cylinder 2, the compressed air still exists in the output pipeline 1, then the cloth bag can be judged to be possibly blocked, the vision identification module feeds back abnormal information to the host computer, the host computer receives the feedback information and displays the number of the abnormal information and the information of the abnormal reason, and make the alarm send out the alarm sound, inform the staff to go to the processing.
When the programmable logic controller does not start the pulse electromagnetic valve, and the visual identification module identifies that the light small ball 3 appears at the top of the transparent cylinder 2, the electromagnetic valve with the corresponding number is judged to be damaged, the visual identification module feeds back abnormal information to the upper computer, the upper computer receives the feedback information, displays the number of the abnormal information and the information of the abnormal reason, and enables the alarm to give an alarm sound to inform a worker to go to process. Under the condition that the pulse electromagnetic valve is not electrified and started in a short time, when the light small ball 3 suddenly appears at the top of the transparent cylinder 2, the pulse electromagnetic valve can be damaged, and the compressed air is leaked into the output pipeline 1 due to insufficient tightness.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.
Claims (10)
1. The device for intelligently detecting the blockage of the bag-type dust collector is characterized by comprising a visual identification module and a detection module;
The detection module comprises a transparent cylinder (2) and colored light balls (3), the transparent cylinder (2) is embedded into the top surface of the output pipeline (1), the light balls (3) are located in the transparent cylinder (2), an opening (4) is formed in the bottom surface of the transparent cylinder (2), the transparent cylinder (2) is communicated with the output pipeline (1) through the opening (4), and the diameter of the opening (4) is smaller than that of the light balls (3);
the visual identification module is used for detecting the state of the colored light pellets (3) in the transparent cylinder (2), and the scanning area of the visual identification module is the part of the transparent cylinder (2) on the top surface of the output pipeline (1).
2. The device for intelligently detecting the blockage of the bag-type dust collector according to claim 1, wherein the height of the part, embedded into the output pipeline (1), of the transparent cylinder (2) is greater than the diameter of the light-weight small ball (3).
3. The device for intelligently detecting the blockage of the bag-type dust collector according to claim 2, wherein the light-weight small ball (3) can be made of plastic.
4. The device for intelligently detecting the blockage of the bag-type dust collector according to claim 2, wherein the visual recognition module simultaneously detects a plurality of light-weight small balls (3) arranged in different output pipelines (1).
5. The device for intelligently detecting the blockage of the bag-type dust collector according to claim 3, comprising an upper computer for sending information and receiving feedback information, wherein the upper computer is in communication connection with a visual identification module, and the visual identification module is in communication connection with a programmable logic controller for controlling the pulse electromagnetic valve.
6. The device for intelligently detecting the blockage of the bag-type dust collector according to claim 5, which comprises an alarm for reminding workers of processing, wherein the alarm is electrically connected with an upper computer.
7. A detection method for intelligently detecting blockage of a bag-type dust collector is suitable for the device for intelligently detecting blockage of the bag-type dust collector as claimed in claim 6, and is characterized by comprising the following steps of;
when the pulse electromagnetic valve is not electrified, compressed air does not exist in the output pipeline (1), and the light small ball (3) is positioned at the bottom of the transparent cylinder body (2);
when the pulse electromagnetic valve is electrified, compressed air passes through the output pipeline (1), the light small balls (3) are blown to the top of the transparent cylinder body (2) from the bottom of the transparent cylinder body (2) by the compressed air, the pulse electromagnetic valve is normal when the vision recognition module detects that the light small balls (3) appear, and the pulse electromagnetic valve is abnormal when the vision recognition module does not detect that the light small balls (3) appear;
When the pulse electromagnetic valve is powered off, compressed air is discharged from the output pipeline (1), and the light pellets (3) fall back to the bottom from the top of the transparent cylinder (2);
if the visual recognition module can still detect the light small balls (3), the light small balls (3) do not fall back, the cloth bag is blocked, and if the visual recognition module does not detect the light small balls (3), the cloth bag is normal.
8. The method for intelligently detecting the blockage of the bag-type dust collector according to claim 7, wherein the programmable logic controller numbers the output pipeline (1), the visual identification module sets the light ball (3) with a number corresponding to the output pipeline (1), and when the visual identification module detects that the abnormity exists, the abnormity information is fed back to the upper computer and the corresponding number and the reason for the abnormity are displayed.
9. The method for intelligently detecting the blockage of the bag-type dust collector according to claim 7, wherein when the visual recognition module detects abnormal information and feeds the abnormal information back to the upper computer, the alarm gives an alarm sound to remind a worker to process the abnormal information.
10. The method for intelligently detecting the blockage of the bag-type dust collector according to claim 7, wherein after the pulse electromagnetic valve is powered off, the visual detection module detects that the light ball (3) with the corresponding number does not fall back immediately, but falls back within 1-2 seconds, the visual identification module feeds back the abnormal information to the upper computer, and displays the number corresponding to the abnormality and the reason for the abnormality, but the alarm does not send alarm information.
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