An automatic sampling system for dry dust removal and its application

Abstract

The present invention discloses an automatic sampling system for dry dust removal and its application, including a sampling box, the sampling box is a hollow chamber structure, and a sampling air inlet and a sampling air outlet connected to the hollow chamber are arranged on the side wall of the sampling box; a driving roller and a feeding roller are arranged in the sampling box, and both the driving roller and the feeding roller are rotatably mounted on the side wall of the sampling box, and a rolled filter cloth is sleeved on the feeding roller, and the driving roller can realize the transmission of the filter cloth from the feeding roller to the driving roller under the drive of a driving mechanism. The automatic sampling system for dry dust removal of the present invention can realize the sampling of filter cloth at the air outlet pipe of the dry dust removal system, replace manual sampling, greatly reduce the labor intensity of workers, and at the same time reduce the deviation of sampling results caused by subjective factors of workers, and can accurately judge the dust removal status of the dry dust removal system.

Description

Technical Field

[0001] The invention relates to the technical field of dry dust removal sampling, in particular to an automatic sampling system for dry dust removal and application thereof. Background Art

[0002] In the process of dry dust removal, it is often necessary to judge the dust removal effect. There are two main existing methods: the first is the traditional sampling method, in which a sampling pipe is set at the outlet end of the dry dust removal system. When sampling is required, the valve on the sampling pipe is opened, and the sampling filter cloth is sealed at the outlet of the sampling pipe. After a period of time, the sampling is completed, and a sampling dust spot is formed on the sampling filter cloth. The dust content at the outlet pipe is judged according to the color depth of the sampling dust spot. The second method is to embed a dust concentration detector on the outlet pipe to detect the dust concentration in the outlet pipe.

[0003] Of the above two detection methods, the second detection scheme basically does not require human participation and can reduce the labor intensity of workers. However, the detection results are easily affected by temperature, gas flow in the pipeline, etc., and the detection results are inaccurate, and the industry recognition is low. Most companies that need to accurately judge the dust concentration at the outlet pipe still use the first sampling method, but the first sampling method requires workers to climb to the outlet pipe and place the sampling filter cloth at the outlet of the sampling pipe. After a certain period of time, the sampling filter cloth is removed. The working environment of the workers during the whole process is extremely harsh, and in the actual sampling process, in order to prevent accidents among workers, generally at least two workers are required to form a group to take samples, which wastes manpower and material resources. At present, there is no automatic sampling system to replace the first sampling method. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides an automatic sampling system for dry dust removal which can replace manual work.

[0005] The object of the present invention is achieved in the following manner:

[0006] An automatic sampling system for dry dust removal, comprising a sampling box, the sampling box being a hollow chamber structure, the side wall of the sampling box being provided with a sampling air inlet and a sampling air outlet connected to the hollow chamber; a driving roller and a feeding roller being provided in the sampling box, the driving roller and the feeding roller being located on both sides of the sampling air inlet, the driving roller and the feeding roller being rotatably mounted on the side wall of the sampling box, the feeding roller being sleeved with a rolled filter cloth, the driving roller being driven by a driving mechanism to pull the rolled filter cloth from the feeding roller side to the driving roller side, thereby realizing the transmission of the filter cloth from the feeding roller to the driving roller; the sampling box A tensioning roller is arranged in parallel with the active roller in the box, and the tensioning roller is rotatably mounted on the inner side wall of the sampling box, and the filter cloth is passed around the tensioning roller by the feeding roller and then pulled and conveyed by the active roller; a support beam is arranged above the active roller, a tightening assembly is arranged on the support beam, an auxiliary wheel is arranged on the tightening assembly, the filter cloth is clamped between the auxiliary wheel and the active roller, and the auxiliary wheel rotates with the active roller to realize the conveyance of the filter cloth clamped therebetween; the tightening assembly includes at least two sets of tightening cylinders arranged on the support beam, and the cylinder bodies of the tightening cylinders are detachably arranged on the support beam. The auxiliary wheel is connected to the telescopic shaft of the tensioning cylinder through a roller bracket, and the auxiliary wheel is rotatably arranged on the roller bracket, and the center lines of the auxiliary wheels are parallel to the center line of the active roller; the cylinder body of the tensioning cylinder is fixed on the first connecting plate, and the first connecting plate is connected to the second connecting plate through a tightening bolt, and the first connecting plate and the second connecting plate are respectively located on both sides of the support beam, and the tightening bolt is tightened, and the first connecting plate and the second connecting plate are clamped on both sides of the support beam to fix the tensioning cylinder on the support beam, and the tightening bolt is loosened, and the tensioning cylinder can move along the support beam. and adjusting the distance between the auxiliary wheels; a first partition and a second partition are arranged in the sampling box, the first partition and the second partition divide the hollow chamber of the sampling box into a feeding chamber, a sampling chamber and a collecting chamber, the feeding roller and the tensioning roller are arranged in the feeding chamber, the sampling air inlet and the sampling air outlet correspond to pass through the sampling chamber, the active roller is arranged in the collecting chamber, the first partition and the second partition are also provided with long holes for conveying the filter cloth, an infrared camera is also arranged in the collecting chamber between the second partition and the active roller, and the infrared camera is arranged on the top wall of the collecting chamber and is arranged toward the filter cloth.

[0007] As an optional scheme of the technical solution of the present invention, it also includes a terminal display screen, and the infrared camera is communicatively connected to the terminal display screen; it also includes a control system, and the control system includes a storage module and an analysis module; the control system is communicatively connected to the infrared camera; it also includes an alarm system, and the alarm system is electrically connected to the control system; the storage module of the control system is provided with a grayscale threshold for judging the degree of contamination of the filter cloth, and the analysis module is used to analyze the grayscale of the filter cloth collected by the infrared camera, and when the grayscale exceeds the grayscale threshold, the alarm system sounds an alarm.

[0008] As an optional solution of the technical solution of the present invention, the filter cloth is also sprayed with a label number.

[0009] As an optional solution of the technical solution of the present invention, the driving mechanism is a servo motor, and the output shaft of the servo motor is connected to the active roller to drive the active roller to rotate.

[0010] As an optional scheme of the technical solution of the present invention, a swing mechanism for folding the filter cloth after sampling is completed is also provided on the side of the active roller away from the second partition; the swing mechanism includes a first gear arranged on the output shaft of the servo motor, the first gear is also meshed with a second gear, the second gear is rotatably arranged in the collection chamber, and a connecting shaft is fixedly provided on the side of the second gear facing the filter cloth, and the connecting shaft is provided with a rocker rod through a connecting rod mechanism. When the servo motor rotates, the second gear drives the rocker rod to swing through the connecting rod mechanism, thereby realizing the folding of the filter cloth hanging from the active roller.

[0011] The present invention also discloses the application of the automatic sampling system in a dry dust removal system, wherein a sampling pipe arranged at the air outlet pipe of the dry dust removal system is extended into the sampling air inlet, and the sampling pipe is extended from the sampling air inlet into the top of the filter cloth; the sampling air outlet is connected to the air outlet pipe through a first air pipe; a second air pipe is also arranged between the sampling pipe and the first air pipe to connect the two; a first electric ball valve is arranged on the sampling pipe between the air inlet of the second air pipe and the sampling box; a second electric ball valve is arranged on the second air pipe; a third electric ball valve is arranged on the air outlet pipe between the air inlet of the sampling pipe and the air outlet of the first air pipe.

[0012] The beneficial effects of the present invention are:

[0013] The automatic sampling system for dry dust removal of the present invention can realize filter cloth sampling at the air outlet duct of the dry dust removal system, replacing manual sampling, greatly reducing the labor intensity of workers, and at the same time reducing the deviation of sampling results caused by subjective factors of workers. It can accurately judge the dust removal status of the dry dust removal system and make adaptive intervention.

[0014] In addition, the sampling results can be monitored in real time, and the sampling results can be automatically judged to realize automatic alarm of abnormal results, thereby improving the intelligence of the sampling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the application of the automatic sampling system in the dry dust removal system in the embodiment of the present invention.

[0017] Figure 2 Schematic diagram of an automatic sampling system in an embodiment of the present invention.

[0018] Figure 3 It is a right side view of the automatic sampling system in an embodiment of the present invention.

[0019] Figure 4 for Figure 3 Schematic diagram of the AA section.

[0020] Figure 5 It is a front view of the automatic sampling system in an embodiment of the present invention.

[0021] Figure 6 for Figure 5 Schematic diagram of the BB section.

[0022] Figure 7 for Figure 6 A partial enlarged view of point C in the middle.

[0023] Figure 8 Schematic diagram of the structure inside the sampling box of the automatic sampling system in an embodiment of the present invention.

[0024] Fig. 9 for Figure 5 A partial enlarged view of point D in the middle.

[0025] Fig.10 Schematic diagram of control principle in an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100-sampling box; 101-sampling air inlet; 102-sampling air outlet; 103-first partition; 104-second partition; 1041-long hole; 105-feeding chamber; 106-sampling chamber; 107-collection chamber; 111-active roller; 112-feeding roller; 113-filter cloth; 1131-label number; 114-driving mechanism; 115-tensioning roller; 116-support beam; 117-planetary reducer; 120-tightening assembly; 121-auxiliary wheel; 122-tightening cylinder; 123-roller bracket; 124-first connecting plate; 125-tightening bolt; 126 -second connecting plate; 130-swinging mechanism; 131-first gear; 132-second gear; 133-connecting shaft; 134-connecting rod mechanism; 135-swing rod; 200-dry dust removal system; 210-exhaust pipe; 220-sampling pipe; 230-first air pipe 240-second air pipe; 250-first electric ball valve; 260-second electric ball valve; 270-third electric ball valve; 300-sampling dust spot; 400-infrared camera; 500-terminal display screen; 600-control system; 610-storage module; 620-analysis module; 700-alarm system. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In this application document, the application of the sampling system in a bag-type dust removal system is taken as an example. It can be understood that the sampling system described in this application document is also applicable to other dry dust removal systems.

[0032] like Figures 2 to 4As shown, the present invention discloses an automatic sampling system for dry dust removal, including a sampling box 100, the sampling box 100 is a hollow chamber structure, and a sampling air inlet 101 and a sampling air outlet 102 connected to the hollow chamber are arranged on the side wall of the sampling box 100; an active roller 111 and a feeding roller 112 are arranged in the sampling box, the active roller 111 and the feeding roller 112 are located on both sides of the sampling air inlet 101, the active roller 111 and the feeding roller 112 are rotatably mounted on the side wall of the sampling box 100, a rolled filter cloth 113 is sleeved on the feeding roller 112, and the active roller 111, driven by a driving mechanism 114, pulls the rolled filter cloth 113 from the side of the feeding roller 112 to the side of the active roller 111, so as to realize the transmission of the filter cloth 113 from the feeding roller 112 to the active roller 111.

[0033] In actual use, Figure 1 As shown, a sampling pipe 220 arranged at the air outlet pipe 210 of the dry dust removal system 200 extends into the sampling air inlet 101, and the sampling pipe 220 extends from the sampling air inlet 101 to the top of the filter cloth 113; the sampling air outlet 101 is connected with the air outlet pipe 210 through the first air pipe 230; a second air pipe 240 is also arranged between the sampling pipe 220 and the first air pipe 230 to connect the two; a first electric ball valve 250 is arranged on the sampling pipe 220 between the air inlet of the second air pipe 240 and the sampling box 100; a second electric ball valve 260 is arranged on the second air pipe 240; a third electric ball valve 270 is arranged on the air outlet pipe 210 between the air inlet of the sampling pipe 220 and the air outlet of the first air pipe 230.

[0034] Under normal circumstances, the first electric ball valve 250 and the second electric ball valve 260 are closed, and the third electric ball valve 270 is opened. The gas after dust removal by the dry dust removal system 200 enters the next process through the outlet pipe 210. When it is necessary to detect the dust content of the gas in the outlet pipe 210, the second electric ball valve 260 is opened first, and the third solenoid valve 270 is closed, so that the gas first enters the outlet pipe through the sampling pipe 220 and the second air pipe 240 to flush out the residual gas in the sampling pipe and avoid sampling errors.

[0035] Subsequently, the second electric ball valve 260 is closed, and the first electric ball valve 250 is opened. The gas enters the sampling box 100 through the sampling pipe 220, and impacts the filter cloth between the feeding roller 112 and the active roller 111. After a specified time, the sampling is completed. The sampling dust spots 300 are left on the filter cloth. According to the color depth of the sampling dust spots 300, the dust removal effect of the dry dust removal system 200 can be intuitively judged. If multiple sampling is desired, the active roller 111 pulls the filter cloth from the feeding roller 112 to the active roller 111 under the drive mechanism 114. The drive mechanism 114 can select intermittent drive according to actual needs. After completing a single sampling, the filter cloth 113 is transmitted to the active roller 111 for a certain distance, so that the filter cloth corresponding to the sampling air inlet 101 is clean and pollution-free, and sampling can be performed again.

[0036] After the sampling is completed, the first electric ball valve 250 is closed, and the third electric ball valve 270 is opened, so that the sampling pipeline 220 is closed, and the gas enters the subsequent process again through the gas outlet pipeline 210. The filter cloth with dust is wound on the active roller 111.

[0037] It is understandable that in order to facilitate the placement of the new roll of filter cloth 113 onto the feed roller 112, and to facilitate the removal of the filter cloth from the active roller 111 after sampling to observe the dust content, the corresponding side walls of the sampling box 100 are detachable side walls. Those skilled in the art can make an applicable design for the side walls of the sampling box 100 according to actual needs, so it will not be repeated here.

[0038] This solution can replace traditional manual sampling. It only needs to replace new filter cloth rolls regularly, which greatly reduces the labor intensity of workers and reduces the deviation of sampling results caused by subjective factors of workers. It can accurately judge the dust removal status of dry dust removal system and make adaptive intervention. For example, for bag-type dust removal system, when there is a lot of dust on the filter cloth after sampling, the color of the sampled dust spot 300 is darker, indicating that the dust removal effect is not good. The possible reason is that the dust on the dust filter bag is saturated. At this time, it is necessary to control the electromagnetic pulse valve on the bag-type dust removal system to backflush the dust filter bag. If the dust removal effect still cannot meet the demand after backflush, it may be that the dust filter bag is damaged and needs to be replaced.

[0039] In the above technical solution, the filter cloth is directly transferred from the feed roller 112 to the active roller 111 driven by the drive mechanism 114. In the sampling process, in order to ensure the accuracy of the sampling results, the filter cloth 113 is preferably directly close to the outlet of the sampling pipe 220. Therefore, in this solution, again as shown in FIG. Figure 4As shown, a tension roller 115 is arranged in parallel with the driving roller 111 in the sampling box 100, and the tension roller 115 is rotatably mounted on the inner side wall of the sampling box 100. The filter cloth 113 is passed around the tension roller 115 by the feeding roller 112, and then pulled and conveyed by the driving roller 111. In this way, the filter cloth 113 between the tension roller 115 and the driving roller 111 can always be kept in a horizontal state, and can be conveniently attached to the air outlet of the sampling pipe 220, thereby improving the accuracy of sampling.

[0040] In the above technical solution, the filter cloth 113 after sampling can be wound on the active roller 111, and the filter cloth is conveyed from the feed roller 112 to the active roller 111 under the drive of the driving mechanism 114. However, in this solution, the filter cloth 113 after sampling may be wound too tightly on the active roller 111, causing the sampling dust spots 300 on the filter cloth 113 to contaminate each other, thus affecting the accuracy of the sampling result. Figure 4 and Fig. 9 As shown, a support beam 116 is arranged above the active roller 111, a jacking assembly 120 is arranged on the support beam 116, an auxiliary wheel 121 is arranged on the jacking assembly 120, and the filter cloth 113 is clamped between the auxiliary wheel 121 and the active roller 111, and the auxiliary wheel 121 rotates with the active roller 111 to realize the transmission of the filter cloth 113 clamped between the two after sampling. In this scheme, the filter cloth 113 after sampling does not need to be wound around the active roller 111, and can fall on the bottom wall of the sampling box 100 only under the action of gravity after hanging from the active roller 111. It can be understood that in order to facilitate the removal of the filter cloth 113 after sampling, the bottom wall of the sampling box can be set to be detachable, and those skilled in the art can make an adaptive design under the guidance of this scheme.

[0041] As a specific solution of the above technical solution, Figure 8 and Fig. 9 As shown, the tightening assembly 120 includes at least two groups of tightening cylinders 122 arranged on the support beam 116, the cylinder body of the tightening cylinder 122 is detachably arranged on the support beam 116, and the auxiliary wheel 121 is connected to the telescopic shaft of the tightening cylinder through the roller bracket 123. The auxiliary wheel 121 is rotatably arranged on the roller bracket 123, and the center line of the auxiliary wheel 121 is parallel to the center line of the active roller 111; under the drive of the tightening cylinder 122, the auxiliary wheel 121 and the active roller 111 can clamp the filter cloth 113 therebetween and realize transmission under the drive of the driving mechanism 114, so as to prevent the filter cloth 113 from slipping during the transmission process due to insufficient clamping force.

[0042] Among them, the connection method between the tightening cylinder 122 and the support beam 116 is that the cylinder body of the tightening cylinder 122 is fixed on the first connecting plate 124, and the first connecting plate 124 is connected to the second connecting plate 126 by the tightening bolt 125. The first connecting plate 124 and the second connecting plate 126 are respectively located on both sides of the support beam 116. After tightening the tightening bolt 125, the first connecting plate 124 and the second connecting plate 126 are clamped on both sides of the support beam 116 to fix the tightening cylinder 122 on the support beam 116. After loosening the tightening bolt 125, the tightening cylinder 122 can move along the support beam 116 to adjust the distance between the auxiliary wheels 121. The distance between the auxiliary wheels 121 should be suitable to avoid the sampling dust spots 300 on the filter cloth 113.

[0043] In the above technical solution, the filter cloth 113 after sampling is accumulated on the bottom wall of the sampling box 100. The filter cloth 113 can be removed and observed at intervals to observe the state of the sampled dust spots 300. The sampling time of each sampled dust spot 300 can only be determined based on the replacement time of the filter cloth roll and the driving frequency of the driving mechanism 114. In addition, during the sampling process, the gas overflowing from the gap between the sampling pipe 220 and the filter cloth 113 is likely to contaminate the unsampled filter cloth on the feeding roller 112, and is also likely to cause secondary pollution to the sampled dust spots 300 after sampling. In this solution, if Figures 3 to 7 As shown, the sampling box 100 is provided with a first partition 103 and a second partition 104, and the first partition 103 and the second partition 104 divide the hollow chamber of the sampling box 100 into a feeding chamber 105, a sampling chamber 106 and a collection chamber 107. The feeding roller 112 and the tensioning roller 115 are arranged in the feeding chamber 105, the sampling air inlet 101 and the sampling air outlet 102 pass through the sampling chamber 106, and the active roller 111 is arranged in the collection chamber 107. 07, the first partition plate 103 and the second partition plate 104 are also provided with a long hole 1041 for conveying the filter cloth. The setting of the first partition plate 103 and the second partition plate 104 isolates the gas outlet of the sampling pipe 220 in the sampling chamber 106, avoiding the contamination of the unsampled filter cloth 113 in the feeding chamber 105, and preventing the gas from contaminating the sampled filter cloth 113 in the collection chamber 107, further ensuring the stability of the sampling results.

[0044] In addition, an infrared camera 400 is also provided between the second partition plate 104 and the active roller 111 in the collection chamber 107. The infrared camera 400 is provided on the top wall of the collection chamber 107 and is provided toward the filter cloth 113. The infrared camera 400 can take pictures of the sampled dust spots 300 on the filter cloth after the sampling is completed, and record the sampling time of each sampled dust spot 300.

[0045] In addition, in order to obtain sample results in time, the dust removal effect of the dry dust removal system 200 can be monitored in real time, such as Fig.10As shown, the automatic sampling system also includes a terminal display screen 500, and the infrared camera 400 is communicatively connected to the terminal display screen 500; the sampling results collected by the infrared camera 400 are displayed in real time on the terminal display screen 500, and the terminal display screen 500 can be set in the central control room, and the staff can observe the collection results of the infrared camera in real time.

[0046] It also includes a control system 600, which includes a storage module 610 and an analysis module 620; the control system 600 is connected to the infrared camera 400; the storage module 610 of the control system 600 is provided with a grayscale threshold for judging the degree of contamination of the filter cloth, and the analysis module 620 is used to analyze the grayscale of the filter cloth collected by the infrared camera 400; it also includes an alarm system 700, which is electrically connected to the control system 600; when the grayscale exceeds the grayscale threshold, the alarm system 700 sounds an alarm. To remind the staff, the staff can make adaptive interventions according to the results collected by the infrared camera 400, such as back-blowing the dust filter bag, or judging whether the dust filter bag needs to be replaced.

[0047] In this solution, the gas in the outlet pipe 210 of the dry dust removal system 200 can be automatically sampled and the sampling results can be monitored in real time. The sampling results can be automatically judged and abnormal results can be automatically alarmed, which greatly reduces the labor intensity of workers.

[0048] It is understandable that in order to further realize the intelligent control of the automatic sampling system, Fig.10 As shown, the control system 600 is electrically connected to the first electric ball valve 250 , the second electric ball valve 260 , and the third electric ball valve 270 , and can intelligently control the entire sampling process.

[0049] The setting of the infrared camera 400 can collect the sampling results in time and observe them in real time. In this case, the filter cloth 113 after sampling can be used as a "backup" to compare the sampling results when necessary. In order to match the sampled dust spots 300 collected by the infrared camera 400 with the sampled dust spots on the filter cloth 113, the filter cloth 113 is sprayed with label numbers 1131 intermittently, so that each label number 1131 corresponds to a sampled dust spot 300. In the subsequent comparison, the sampled dust spots 300 on the corresponding filter cloth can be found according to the label numbers 1131 corresponding to the sampled dust spots 300 collected by the infrared camera 400.

[0050] According to the above description, the driving mechanism 114 can realize intermittent driving of the filter cloth 113. In this solution, as a specific structure, the driving mechanism 114 is a servo motor, and the output shaft of the servo motor 114 is connected to the active roller 111 to drive the active roller 111 to rotate. It can be understood that in actual application, those skilled in the art can add a star reducer 117 to the output shaft of the servo motor according to actual needs to meet different transmission requirements.

[0051] In addition, in the above scheme, the filter cloth 113 after sampling is piled up on the bottom wall of the sampling box 100 in a disordered manner, which is inconvenient in the process of removing the filter cloth. Figure 8 As shown, a swing mechanism 130 for folding the filter cloth 113 after sampling is completed is also provided on the side of the active roller 111 away from the second partition 104; the swing mechanism 130 includes a first gear 131 arranged on the output shaft of the servo motor, the first gear 131 is also meshed with a second gear 132, the second gear 132 is rotatably arranged in the collection chamber 107, and a connecting shaft 133 is fixedly provided on the side of the second gear 132 facing the filter cloth 113, and the connecting shaft 133 is provided with a swing rod 135 through a connecting rod mechanism 134. When the servo motor rotates, the second gear 132 drives the swing rod 135 to swing through the connecting rod mechanism 134, thereby realizing the folding of the filter cloth 113 hanging from the active roller 111, which is convenient for the subsequent removal of the filter cloth.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. An automatic sampling system for dry dust removal, characterized in that: It comprises a sampling box, the sampling box is a hollow chamber structure, and a sampling air inlet and a sampling air outlet connected to the hollow chamber are arranged on the side wall of the sampling box; A driving roller and a feeding roller are arranged in the sampling box, the driving roller and the feeding roller are located on both sides of the sampling air inlet, the driving roller and the feeding roller are rotatably mounted on the side wall of the sampling box, a rolled filter cloth is sleeved on the feeding roller, and the driving roller, driven by the driving mechanism, pulls the rolled filter cloth from the feeding roller side to the driving roller side, so as to realize the transmission of the filter cloth from the feeding roller to the driving roller; A tension roller is arranged in the sampling box in parallel with the driving roller, and the tension roller is rotatably mounted on the inner side wall of the sampling box. The filter cloth is passed around the tension roller by the feeding roller and then pulled and transported by the driving roller. A support beam is arranged above the active roller, a jacking assembly is arranged on the support beam, an auxiliary wheel is arranged on the jacking assembly, the filter cloth is clamped between the auxiliary wheel and the active roller, and the auxiliary wheel rotates with the active roller to realize the transmission of the filter cloth clamped between the two; The jacking assembly comprises at least two groups of jacking cylinders arranged on the support beam, the cylinder bodies of the jacking cylinders are detachably arranged on the support beam, the telescopic shafts of the jacking cylinders are connected to the auxiliary wheels via roller brackets, the auxiliary wheels are rotatably arranged on the roller brackets, and the center lines of the auxiliary wheels are parallel to the center line of the active rollers; The cylinder body of the tensioning cylinder is fixed on the first connecting plate, and the first connecting plate is connected to the second connecting plate by a tightening bolt. The first connecting plate and the second connecting plate are respectively located on both sides of the support beam. After the tightening bolt is tightened, the first connecting plate and the second connecting plate are clamped on both sides of the support beam to fix the tensioning cylinder on the support beam. After the tightening bolt is loosened, the tensioning cylinder can move along the support beam to adjust the distance between the auxiliary wheels. A first partition and a second partition are provided in the sampling box, and the first partition and the second partition divide the hollow chamber of the sampling box into a feeding chamber, a sampling chamber and a collecting chamber. The feeding roller and the tensioning roller are arranged in the feeding chamber, and the sampling air inlet and the sampling air outlet correspondingly pass through the sampling chamber. The active roller is arranged in the collecting chamber, and the first partition and the second partition are also provided with long holes for conveying the filter cloth. An infrared camera is also arranged in the collecting chamber between the second partition and the active roller, and the infrared camera is arranged on the top wall of the collecting chamber and is arranged toward the filter cloth.

2. The automatic sampling system for dry dust removal according to claim 1, characterized in that: It also includes a terminal display screen, and the infrared camera is communicatively connected to the terminal display screen; Also included is a control system, the control system including a storage module and an analysis module; The control system is communicatively connected with the infrared camera; Also included is an alarm system, the alarm system being electrically connected to the control system; The storage module of the control system is provided with a grayscale threshold for judging the degree of contamination of the filter cloth. The analysis module is used to analyze the grayscale of the filter cloth captured by the infrared camera. When the grayscale exceeds the grayscale threshold, the alarm system sounds an alarm.

3. The automatic sampling system for dry dust removal according to claim 2, characterized in that: The filter cloth is also sprayed with a label number.

4. The automatic sampling system for dry dust removal according to claim 1, characterized in that: The driving mechanism is a servo motor, and the output shaft of the servo motor is connected to the active roller to drive the active roller to rotate.

5. The automatic sampling system for dry dust removal according to claim 4, characterized in that: The side of the active roller away from the second partition is also provided with a manipulation mechanism for folding the filter cloth after sampling is completed; The swing mechanism includes a first gear arranged on the output shaft of the servo motor, the first gear is also meshed with a second gear, the second gear is rotatably arranged in the collection chamber, a connecting shaft is fixedly arranged on the side of the second gear facing the filter cloth, and the connecting shaft is provided with a swing rod through a connecting rod mechanism. When the servo motor rotates, the second gear drives the swing rod to swing through the connecting rod mechanism, thereby realizing the folding of the filter cloth hanging from the active roller.

6. Application of the automatic sampling system according to any one of claims 1 to 5 in a dry dust removal system, characterized in that: A sampling pipe arranged at the air outlet pipe of the dry dust removal system is inserted into the sampling air inlet, and the sampling pipe is inserted from the sampling air inlet into the top of the filter cloth; The sampling air outlet is connected to the air outlet pipeline through the first air pipe; A second air pipe is also provided between the sampling pipe and the first air pipe to connect the two. A first electric ball valve is provided on the sampling pipeline between the air inlet of the second air pipe and the sampling box; The second air pipe is provided with a second electric ball valve; A third electric ball valve is arranged on the air outlet pipeline between the air inlet of the sampling pipeline and the air outlet of the first air pipe.

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