An online monitoring device and method for industrial tail gas particulate matter concentration

Abstract

The present invention discloses an online monitoring device and method for the concentration of particulate matter in industrial exhaust gas, which relate to the technical field of environmental monitoring, and include a detection cylinder, a sealing cover plate is arranged on the top of the detection cylinder, an air inlet is fixedly penetrated through the top of the sealing cover plate, an air outlet is fixedly penetrated through the top of the sealing cover plate, a concentration detection mechanism is fixedly penetrated through the top of the sealing cover plate, and also includes a maintenance device; wherein the maintenance device includes a driving motor, a cross rod, a mounting plate, a push rod, a No. 1 spring, an extrusion plate, a cleaning cloth, a No. 1 shrapnel, a loading frame, a connecting rod, a C-shaped plate, a No. 2 spring, a limiting rod and a rectangular plate, and after the sealing cover plate is opened, the cleaning cloth can be quickly replaced, which effectively ensures the cleaning effect, and can also facilitate operators to inspect and maintain the concentration detection mechanism, thereby improving the reliability of the detection.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring, and in particular to an online monitoring device and method for industrial tail gas particulate matter concentration. Background Art

[0002] The online monitoring device for industrial exhaust particulate matter concentration is a device used to detect and monitor the concentration of particulate matter in industrial exhaust gases in real time. It is usually used to measure and record the concentration of atmospheric pollutants to ensure that emissions do not exceed the prescribed standards and provide data support for environmental monitoring, pollution source control, and energy conservation and emission reduction.

[0003] The patent with patent announcement number CN221840902U relates to an online monitoring device for the concentration of particulate matter in exhaust gas, wherein a monitoring component is arranged on the outside of the detection box, and a cleaning component is arranged on the inside of the detection box, wherein the monitoring component comprises a mounting seat installed on the air inlet end of the detection box, and the outer end of the mounting seat is connected to an insulation pipe, a jet pump is installed at the air inlet end of the insulation pipe, and a Pitot tube is installed on the air inlet end of the jet pump, a detection box is installed on one side of the outside of the detection box, and a light source box is installed on the other side of the outside of the detection box, and an insulation mechanism is arranged inside the insulation pipe. The online monitoring device for the concentration of particulate matter in exhaust gas described in the patent can enable the overall device to conveniently clean the inner wall of the detection box, effectively improve the work efficiency of the users, improve the practicality of the overall device, and bring better prospects for use.

[0004] The above patent has the function of efficiently cleaning the inner wall of the test box. By adjusting the motor to drive the cleaning frame at the connecting shaft to rotate, the cleaning frame can be more closely fitted to the inner wall of the test box for cleaning, thereby precisely cleaning the test box. However, after cleaning, the cleaning frame needs to be regularly maintained or replaced to prevent the cleaning effect from decreasing. The residual particulate matter will interfere with the results of the concentration detection, thereby causing inaccurate measurement data and ultimately affecting the reliability of the test results. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an online monitoring device and method for industrial exhaust particulate matter concentration, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an online monitoring device for the concentration of particulate matter in industrial exhaust gas, comprising a detection cylinder, a sealing cover plate is arranged on the top of the detection cylinder, an air inlet is fixedly penetrated through the top of the sealing cover plate, an air outlet is fixedly penetrated through the top of the sealing cover plate, a concentration detection mechanism is fixedly penetrated through the top of the sealing cover plate, the concentration detection mechanism is started, and the detection end of the concentration detection mechanism performs concentration detection on the industrial exhaust gas inside the detection cylinder, and also includes a maintenance device; wherein the maintenance device comprises a driving motor, a cross rod, a carrying plate, a push rod, a No. 1 spring, an extrusion plate, a cleaning cloth, a No. 1 shrapnel, a loading rack, a connecting rod, a C-shaped plate, a No. 2 spring, a limit rod and a rectangular plate, the driving motor is started, and the output end of the driving motor drives the cross rod to rotate, the rotation of the cross rod drives the carrying plate to move, and at the same time, the rotation of the cross rod drives the push rod to rotate, the driving motor is fixedly penetrated through the top of the sealing cover plate, the cross rod is fixedly installed on the output end of the sealing cover plate, and the carrying plate is fixedly installed on the cross rod The top of the connecting rod is fixedly connected to the sealing cover plate, the C-shaped plate slides through the inner and outer walls of the loading frame, the No. 2 spring is arranged between the C-shaped plate and the loading frame, the limit rod slides through the inner and outer walls of the loading frame, the circumferential surface of the limit rod is fixedly connected to the inner and outer walls of the C-shaped plate, the rectangular plate is fixedly installed on the circumferential surface of the connecting rod, the side of the extrusion plate close to the cleaning cloth is provided with an arc surface one, the cleaning cloth contacts with the arc surface one, the curved surface of the cleaning cloth contacts with the inner wall of the detection cylinder, the rotation of the carrying plate drives the cleaning cloth to rotate, and the rotation of the cleaning cloth cleans the inner wall of the detection cylinder.

[0007] According to the above technical solution, a circular hole is provided on the circumferential surface of the connecting rod, and the circumferential surface of the limiting rod contacts the inner wall of the circular hole. The limiting rod is separated from the circular hole during movement, so that the limit imposed by the limiting rod on the connecting rod is released. A spherical surface 1 is provided on the side of the limiting rod close to the loading frame, and the spherical surface 1 of the limiting rod contacts the circumferential surface of the moving connecting rod, so that the movement of the limiting rod is restricted, and the spherical surface 1 contacts the inner wall of the loading frame.

[0008] According to the above technical solution, an anti-skid groove is provided on the side of the extrusion plate close to the cleaning cloth, and the anti-skid groove is in contact with the side of the cleaning cloth close to the push rod. After replacing the cleaning cloth, the push rod is released, and the deformed spring piece No. 1 is restored to drive the extrusion plate to move away from the push rod, and the anti-skid groove of the extrusion plate squeezes the cleaning cloth during movement.

[0009] According to the above technical solution, it also includes an auxiliary device and a safety device; the auxiliary device includes a hollow plate, a sliding rod, a No. 3 spring, a contact plate, a support rod, a linkage plate, an elastic sheet, a plurality of fixed frames and a plurality of rotating blocks, the movement of the contact plate drives the sliding rod to move downward, the sliding rod squeezes the No. 3 spring during the movement, and the No. 3 spring is deformed by the squeezing, the hollow plate is fixedly mounted on the surface of the loading frame, the sliding rod slides through the top of the hollow plate, the No. 3 spring is arranged between the sliding rod and the hollow plate, the contact plate is fixedly mounted on the top of the sliding rod, the support rod slides The movable plate runs through the top of the hollow plate, the top of the support rod is fixedly connected to the contact plate, the linkage plate is fixedly installed on the bottom of the support rod, the elastic sheet is fixedly installed on the surface of the linkage plate, a number of the fixed frames are fixedly installed on the inner wall of the hollow plate, and a number of the rotating blocks are rotatably installed on the inner wall of the fixed frame. The top of the contact plate contacts with the rectangular plate. When the rectangular plate moves upward, the rectangular plate gradually reduces the pressure applied to the contact plate, so that the deformed No. 3 spring recovers and drives the sliding rod to move upward. A moving groove is opened on the surface of the hollow plate, and the linkage plate contacts with the inner wall of the moving groove.

[0010] According to the above technical solution, a rectangular block is arranged relatively to the top of the contact plate, the rectangular block contacts the surface of the rectangular plate, the support rod contacts the top of the hollow plate, the support rod moves to a specified position and stops moving, and the hollow plate provides support for the contact plate through the support rod.

[0011] According to the above technical solution, the shape of the elastic sheet is set to be an arc, and the side of the linkage plate away from the sliding rod is provided with an arc surface 2, and a spiral spring is arranged between the rotating block and the fixed frame. The rotating block rotates to stretch the spiral spring, and the spiral spring is deformed due to the stretching. The deformed spiral spring restores and drives the rotating block to reset, and the bottom of the rotating block contacts the inner wall of the fixed frame.

[0012] According to the above technical scheme, the safety device includes a carrying frame, a rubber plate, a No. 2 spring piece, a T-shaped block, a No. 3 spring piece, a pushing block, a lifting block and a No. 4 spring piece. The pushing block is held and moved in the direction of the carrying frame, and the pushing block moves to drive the T-shaped block to move in the direction of the linkage plate. The carrying frame is fixedly installed on a side of the hollow plate close to the moving groove, the rubber plate slides through the inner wall of the carrying frame, the No. 2 spring piece is arranged between the rubber plate and the carrying frame, the T-shaped block slides through the inner and outer walls of the carrying frame, the No. 3 spring piece is arranged between the T-shaped block and the carrying frame, the pushing block is fixedly installed on a side of the T-shaped block away from the hollow plate, the lifting block slides through the top of the T-shaped block, the No. 4 spring piece is arranged between the lifting block and the T-shaped block, the side of the rubber plate away from the No. 2 spring piece is provided with corrugations, the arc surface 2 of the linkage plate contacts the corrugations of multiple rubber plates during movement, the arc surface 2 moves to squeeze the rubber plate, and the rubber plate is squeezed and moves in the direction of the No. 2 spring piece, and a card slot is provided on a side of the carrying frame close to the lifting block.

[0013] According to the above technical solution, a rectangular groove is provided on one side of the T-shaped block close to the linkage plate, the lifting block is adapted to the size of the slot, and an arc surface three is provided on the top of the lifting block, and the arc surface three is in contact with the inner wall of the carrying frame. The arc surface three of the lifting block is separated from the surface in contact with the carrying frame during movement, so that the deformed spring piece No. 4 is restored to drive the lifting block to move upward.

[0014] A monitoring method of an online monitoring device for industrial exhaust gas particulate matter concentration, using the above-mentioned online monitoring device for industrial exhaust gas particulate matter concentration, comprises the following steps:

[0015] Step 1: Introduce the industrial exhaust gas into the detection tube from the air inlet, start the concentration detection mechanism, and the detection end of the concentration detection mechanism detects the concentration of the industrial exhaust gas in the detection tube;

[0016] Step 2: After the concentration test is completed, the operator will take the initiative to record the monitoring results. After the recording is completed, the industrial exhaust gas inside the test tube is discharged through the outlet;

[0017] Step 3: Start the drive motor. The output end of the drive motor drives the cross rod to rotate. The rotation of the cross rod drives the carrying plate to move. At the same time, the rotation of the cross rod drives the push rod to rotate.

[0018] Step 4: The push rod rotates to drive the extrusion plate to rotate, and the carrying plate rotates to drive the cleaning cloth to rotate. The cleaning cloth rotates to clean the inner wall of the detection cylinder to ensure that the monitoring work can be carried out smoothly next time.

[0019] The present invention provides an online monitoring device and method for industrial tail gas particulate matter concentration, which has the following beneficial effects:

[0020] (1) In the on-line monitoring device for the concentration of particulate matter in industrial exhaust gas, the limit rod and the circular hole are separated, so that the limit imposed by the limit rod on the connecting rod is released. By applying a limit to the connecting rod, it is ensured that it will not be accidentally opened during detection. The automatic limit of the limit rod allows the operator to concentrate on lifting the sealing cover plate, thereby improving the efficiency of the operation. At the same time, the sealing cover plate is manually lifted, and the surface of the sealing cover plate that moves and contacts the detection tube is separated. After the sealing cover plate is opened, the cleaning cloth can be quickly replaced, effectively ensuring the cleaning effect. It can also facilitate the operator to inspect and maintain the concentration detection mechanism, thereby improving the reliability of the detection.

[0021] (2) In the on-line monitoring device for the concentration of particulate matter in industrial exhaust, the sliding rod drives the contact plate to move, and the movement of the contact plate applies a thrust to the bottom of the rectangular plate. By setting a rectangular block, the contact plate can stably apply a thrust to the bottom of the rectangular plate, which helps to reduce the physical burden of the operator, thereby improving the stability of the lifting process. At the same time, the elastic sheet intermittently collides with the rotating block during movement to generate continuous vibration, which is transmitted to the moving rectangular plate through the rotating block, reducing the jamming of the overall movement, so that the sealing cover is affected by the vibration when closing and contacts the detection tube more closely.

[0022] (3) In the on-line monitoring device for industrial exhaust particulate matter concentration, the linkage plate is affected by friction and applies intermittent resistance to the moving support rod. The rubber plate applies intermittent resistance to the linkage plate, which effectively alleviates the impact force generated by the sealing cover plate contacting the detection tube when closing, thereby improving the safety of operation. At the same time, the inner wall of the rectangular groove of the T-shaped block contacts the linkage plate, so that the T-shaped block applies a limit to the linkage plate. The push block applies a limit to the linkage plate, and the operator can flexibly choose whether to enable the contact plate according to needs, thereby improving the adaptability of the contact plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the detection tube of the present invention;

[0025] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 This is a schematic diagram of the internal structure of the mounting plate of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the loading rack of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the auxiliary device and the safety device of the present invention;

[0029] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0030] Figure 8 It is a schematic diagram of the internal structure of the safety device of the present invention.

[0031] In the figure: 1. detection cylinder; 2. sealing cover plate; 3. air inlet; 4. air outlet; 5. concentration detection mechanism; 6. driving motor; 7. cross rod; 8. carrying plate; 9. push rod; 10. spring No. 1; 11. extrusion plate; 12. cleaning cloth; 13. spring No. 1; 14. loading frame; 15. connecting rod; 16. C-shaped plate; 17. spring No. 2; 18. limiting rod; 19. rectangular plate; 201. hollow plate; 202. sliding rod; 203. spring No. 3; 204. contact plate; 205. supporting rod; 206. linkage plate; 207. elastic sheet; 208. fixed frame; 209. rotating block; 211. carrying frame; 212. rubber plate; 213. spring No. 2; 214. T-shaped block; 215. spring No. 3; 216. pushing block; 217. lifting block; 218. spring No. 4. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 8, one embodiment of the present invention is: an online monitoring device for industrial exhaust particulate matter concentration, comprising a detection tube 1, a sealing cover plate 2 is arranged on the top of the detection tube 1, an air inlet 3 is fixedly penetrated on the top of the sealing cover plate 2, an air outlet 4 is fixedly penetrated on the top of the sealing cover plate 2, a concentration detection mechanism 5 is fixedly penetrated on the top of the sealing cover plate 2, and a maintenance device is also included; wherein the maintenance device comprises a driving motor 6, a cross rod 7, a carrying plate 8, a push rod 9, a No. 1 spring 10, an extrusion plate 11, a cleaning cloth 12, a No. 1 shrapnel 13, a loading frame 14, a connecting rod 15, a C-shaped plate 16, a No. 2 spring 17, a limiting rod 18 and a rectangular plate 19, the driving motor 6 is fixedly penetrated on the top of the sealing cover plate 2, the cross rod 7 is fixedly installed on the output end of the sealing cover plate 2, the carrying plate 8 is fixedly installed on the surface of the cross rod 7, the push rod 9 slides through the inner and outer walls of the cross rod 7, the push rod 9 slides through the inner and outer walls of the carrying plate 8, the No. 1 spring 10 is arranged between the push rod 9 and the cross rod 7, the extrusion plate 11 is fixedly installed on the push rod 9 On one side close to the mounting plate 8, the cleaning cloth 12 is arranged on the inner wall of the mounting plate 8, the No. 1 spring sheet 13 is arranged between the extrusion plate 11 and the mounting plate 8, the loading frame 14 is fixedly installed on the circumferential surface of the detection tube 1, the connecting rod 15 slides through the inner and outer walls of the loading frame 14, the top of the connecting rod 15 is fixedly connected to the sealing cover plate 2, the C-shaped plate 16 slides through the inner and outer walls of the loading frame 14, the No. 2 spring 17 is arranged between the C-shaped plate 16 and the loading frame 14, and the limit rod 18 slides through the inner wall of the loading frame 14. The outer wall, the circumferential surface of the limit rod 18 is fixedly passed through the inner and outer walls of the C-shaped plate 16, the rectangular plate 19 is fixedly installed on the circumferential surface of the connecting rod 15, and the extrusion plate 11 is provided with an arc surface 1 on one side close to the cleaning cloth 12, and the cleaning cloth 12 is in contact with the arc surface 1, and the curved surface of the cleaning cloth 12 is in contact with the inner wall of the detection tube 1. After opening through the sealing cover 2, the cleaning cloth 12 can be quickly replaced, which effectively ensures the cleaning effect, and can also facilitate the operator to inspect and maintain the concentration detection mechanism 5, thereby improving the reliability of the detection.

[0034] A circular hole is provided on the circumferential surface of the connecting rod 15, and the circumferential surface of the limiting rod 18 contacts the inner wall of the circular hole. A spherical surface 1 is provided on the side of the limiting rod 18 close to the loading frame 14, and the spherical surface 1 contacts the inner wall of the loading frame 14. By applying a limit to the connecting rod 15, it is ensured that it will not be accidentally opened during inspection. The automatic limit of the limiting rod 18 allows the operator to concentrate on lifting the sealing cover plate 2, reducing the complexity of the operation and improving the efficiency of the operation.

[0035] An anti-skid groove is provided on one side of the squeezing plate 11 close to the cleaning cloth 12, and the anti-skid groove contacts the side of the cleaning cloth 12 close to the push rod 9. By providing the anti-skid groove, it is ensured that the squeezing plate 11 can stably press the cleaning cloth 12 to prevent the cleaning cloth 12 from slipping during use.

[0036] A monitoring method of an online monitoring device for industrial exhaust gas particulate matter concentration, using the above-mentioned online monitoring device for industrial exhaust gas particulate matter concentration, comprises the following steps:

[0037] Step 1: Introduce the industrial exhaust gas into the detection tube 1 from the air inlet 3, start the concentration detection mechanism 5, and the detection end of the concentration detection mechanism 5 performs concentration detection on the industrial exhaust gas in the detection tube 1;

[0038] Step 2: After the concentration detection is completed, the operator will take the initiative to record the monitoring results. After the recording is completed, the industrial exhaust gas inside the detection tube 1 is discharged through the outlet 4;

[0039] Step 3: Start the driving motor 6. The output end of the driving motor 6 drives the cross rod 7 to rotate. The rotation of the cross rod 7 drives the carrying plate 8 to move. At the same time, the rotation of the cross rod 7 drives the push rod 9 to rotate.

[0040] Step 4: The push rod 9 rotates to drive the extrusion plate 11 to rotate, and at the same time, the carrying plate 8 rotates to drive the cleaning cloth 12 to rotate. The cleaning cloth 12 rotates to clean the inner wall of the detection tube 1 to ensure that the monitoring work can be carried out smoothly next time.

[0041] When the present embodiment is working, the industrial exhaust gas is introduced into the detection tube 1 from the air inlet 3, the concentration detection mechanism 5 is started, and the detection end of the concentration detection mechanism 5 performs concentration detection on the industrial exhaust gas inside the detection tube 1. After the concentration detection is completed, the industrial exhaust gas inside the detection tube 1 is discharged through the air outlet 4, and the driving motor 6 is started. The output end of the driving motor 6 drives the cross rod 7 to rotate, and the rotation of the cross rod 7 drives the carrying plate 8 to rotate. At the same time, the rotation of the cross rod 7 drives the push rod 9 to rotate, and the rotation of the push rod 9 drives the extrusion plate 11 to rotate. When the extrusion plate 11 rotates, it applies pressure to the cleaning cloth 12, so that the rotation of the carrying plate 8 drives the cleaning cloth 12 to rotate, and the cleaning cloth 12 rotates to clean the inner wall of the detection tube 1, so that the particles adhering to the inner wall of the detection tube 1 during the industrial exhaust gas detection process are removed. The particles are collected by the cleaning cloth 12. After cleaning, the driving motor 6 is turned off, and the limit rod 18 is held and moved in the direction away from the loading rack 14. The limit rod 18 moves and drives the C-shaped plate 16 to move in the direction away from the loading rack 14. The C-shaped plate 16 stretches the No. 2 spring 17 during the movement. The No. 2 spring 17 is deformed due to the stretching. At the same time, the limit rod 18 is separated from the circular hole during the movement, so that the limit imposed by the limit rod 18 on the connecting rod 15 is released, and the sealing cover plate 2 is manually lifted. The sealing cover plate 2 moves and separates from the surface in contact with the detection cylinder 1. At the same time, the sealing cover plate 2 moves and drives the connecting rod 15 to move upward. The connecting rod 15 moves and drives the rectangular plate 19 to move upward, and the limit rod 18 is released. The deformed No. 2 spring 17 recovers and drives the limit rod 18 to move in the direction of the connecting rod 15. When the connecting rod 15 moves, the spherical surface 1 of the limit rod 18 contacts the circumferential surface of the moving connecting rod 15, so that the movement of the limit rod 18 is restricted. When the connecting rod 15 moves to the predetermined position, the spherical surface 1 separates from the circumferential surface of the connecting rod 15, and the restriction on the limit rod 18 is released. The deformed No. 2 spring 17 recovers and drives the limit rod 18 to continue to move. The limit rod 18 passes through the circular hole during movement to limit the connecting rod 15. By limiting the connecting rod 15, it is ensured that it will not be accidentally opened during detection. The automatic limit of the limit rod 18 allows the operator to concentrate on lifting the sealing cover plate 2, which reduces the complexity of the operation and improves the efficiency of the operation. When the sealing cover plate 2 moves, it drives the concentration detection mechanism 5 and the drive motor 6 to move upward, and the drive motor 6 moves to drive the cross rod 7 moves upward, the cross rod 7 moves to drive the carrying plate 8 to move upward, the carrying plate 8 moves to drive the push rod 9 to move upward, the push rod 9 moves to drive the extrusion plate 11 to move upward, and at the same time, the carrying plate 8 moves to drive the cleaning cloth 12 to move upward, and the curved surface of the cleaning cloth 12 is separated from the surface in contact with the detection tube 1 during the movement. After the connecting rod 15 is limited, the operator inspects and maintains the detection end of the concentration detection mechanism 5. When the cleaning cloth 12 needs to be replaced, the push rod 9 is pushed to move away from the carrying plate 8. The push rod 9 squeezes the No. 1 spring 10 during the movement, and the No. 1 spring 10 is squeezed and deformed. At the same time, the push rod 9 moves to drive the extrusion plate 11 to move away from the cleaning cloth 12, and the anti-skid groove of the extrusion plate 11 is separated from the surface in contact with the cleaning cloth 12 during the movement.The pressure exerted by the squeezing plate 11 on the cleaning cloth 12 is gradually reduced. At the same time, the squeezing plate 11 squeezes the first spring sheet 13 during movement, and the first spring sheet 13 is squeezed and deformed. When the squeezing plate 11 moves to the specified position, the cleaning cloth 12 is pulled out for replacement. After the sealing cover plate 2 is opened, the cleaning cloth 12 can be quickly replaced, which effectively ensures the cleaning effect and facilitates the operator to inspect and maintain the concentration detection mechanism 5, thereby improving the reliability of the detection.

[0042] See also Figure 1-Figure 8 On the basis of the above embodiment, another embodiment of the present invention further includes an auxiliary device and a safety device; the auxiliary device includes a hollow plate 201, a sliding rod 202, a No. 3 spring 203, a contact plate 204, a support rod 205, a linkage plate 206, an elastic sheet 207, a plurality of fixed frames 208 and a plurality of rotating blocks 209, the hollow plate 201 is fixedly mounted on the surface of the loading frame 14, the sliding rod 202 slides through the top of the hollow plate 201, the No. 3 spring 203 is arranged between the sliding rod 202 and the hollow plate 201, the contact plate 204 is fixedly mounted on the top of the sliding rod 202, the support rod 205 slides through the hollow plate 201 The top of the support rod 205 is fixedly connected to the contact plate 204, the linkage plate 206 is fixedly installed on the bottom of the support rod 205, the elastic sheet 207 is fixedly installed on the surface of the linkage plate 206, a number of fixed frames 208 are fixedly installed on the inner wall of the hollow plate 201, and a number of rotating blocks 209 are rotatably installed on the inner wall of the fixed frame 208. The top of the contact plate 204 contacts with the rectangular plate 19, and a moving groove is provided on the surface of the hollow plate 201. The linkage plate 206 contacts with the inner wall of the moving groove, and the contact plate 204 stably applies thrust to the bottom of the rectangular plate 19, which helps to reduce the physical burden of the operator and thus improve the stability of the lifting process.

[0043] A rectangular block is arranged opposite to the top of the contact plate 204, and the rectangular block contacts the surface of the rectangular plate 19. The support rod 205 contacts the top of the hollow plate 201. By arranging a relative rectangular block on the top of the contact plate 204, the contact plate 204 can be stably contacted with the rectangular plate 19, thereby improving the use effect of the contact plate 204.

[0044] The shape of the elastic sheet 207 is set to be an arc, and the side of the linkage plate 206 away from the sliding rod 202 is provided with an arc surface 2, and a spiral spring is arranged between the rotating block 209 and the fixed frame 208. The bottom of the rotating block 209 contacts the inner wall of the fixed frame 208, and vibration is generated by the collision between the elastic sheet 207 and the rotating block 209, and then the vibration is transmitted to the moving rectangular plate 19, so that the sealing cover plate 2 is affected by the vibration when closed and contacts the detection tube 1 more closely.

[0045] The safety device includes a carrying frame 211, a rubber plate 212, a second spring piece 213, a T-shaped block 214, a third spring piece 215, a push block 216, a lifting block 217 and a fourth spring piece 218. The carrying frame 211 is fixedly mounted on a side of the hollow plate 201 close to the moving groove, the rubber plate 212 slides through the inner wall of the carrying frame 211, the second spring piece 213 is arranged between the rubber plate 212 and the carrying frame 211, the T-shaped block 214 slides through the inner and outer walls of the carrying frame 211, and the third spring piece 215 is arranged between the T-shaped block 214 and the carrying frame 211. The pushing block 216 is fixedly mounted on the side of the T-shaped block 214 away from the hollow plate 201, the lifting block 217 slides through the top of the T-shaped block 214, the fourth spring piece 218 is arranged between the lifting block 217 and the T-shaped block 214, the rubber plate 212 is provided with corrugations on the side away from the second spring piece 213, and the side of the mounting frame 211 close to the lifting block 217 is provided with a card slot. The rubber plate 212 applies intermittent resistance to the linkage plate 206, which effectively alleviates the impact force generated by the sealing cover plate 2 contacting the detection tube 1 when closing, thereby improving the safety of operation.

[0046] A rectangular groove is provided on one side of the T-shaped block 214 close to the linkage plate 206, and the lifting block 217 is adapted to the size of the groove. An arc surface three is provided on the top of the lifting block 217, and the arc surface three contacts the inner wall of the mounting frame 211. The linkage plate 206 is limited by the pushing block 216, and the operator can flexibly choose whether to enable the contact plate 204 as needed, thereby improving the adaptability of the contact plate 204.

[0047] When the present embodiment is working, when the rectangular plate 19 moves upward, the rectangular plate 19 gradually reduces the pressure applied to the contact plate 204, so that the deformed No. 3 spring 203 recovers and drives the sliding rod 202 to move upward, the sliding rod 202 moves and drives the contact plate 204 to move upward, the contact plate 204 moves and applies a thrust to the bottom of the rectangular plate 19, and at the same time, the contact plate 204 moves and drives the support rod 205 to move upward, the support rod 205 moves and drives the linkage plate 206 to move upward, the linkage plate 206 moves and drives the elastic sheet 207 to move upward, the curved surface of the elastic sheet 207 contacts the bottom of the rotating block 209 during the movement, the elastic sheet 207 moves and drives the rotating block 209 to rotate upward, and the rotating block 209 The bottom is separated from the inner wall of the fixed frame 208 during rotation, and the rotating block 209 rotates to stretch the scroll spring. The scroll spring is stretched and deformed. When the contact surface of the rotating block 209 and the elastic sheet 207 is separated, the deformed scroll spring recovers and drives the rotating block 209 to reset. By setting a relative rectangular block on the top of the contact plate 204, the contact plate 204 can stably apply thrust to the bottom of the rectangular plate 19, which helps to reduce the physical burden of the operator, thereby improving the stability of the lifting process. When the sealing cover plate 2 is closed, the connecting rod 15 moves to drive the rectangular plate 19 to move downward, the rectangular plate 19 moves to drive the contact plate 204 to move downward, and the contact plate 204 moves to drive the sliding rod 202 downward The sliding rod 202 squeezes the No. 3 spring 203 during the movement, and the No. 3 spring 203 is squeezed and deformed. The deformed No. 3 spring 203 applies a reaction force to the contact plate 204 through the sliding rod 202. The contact plate 204 is affected by the reaction force and applies additional resistance to the moving rectangular plate 19. At the same time, the movement of the contact plate 204 drives the support rod 205 to move downward. The support rod 205 stops moving after moving to the specified position. The hollow plate 201 provides support for the contact plate 204 through the support rod 205. The movement of the support rod 205 drives the linkage plate 206 to move downward. The movement of the linkage plate 206 drives the elastic sheet 207 to move downward. The inner concave surface of the elastic sheet 207 moves and The top of the rotating block 209 contacts, and the rotating block 209 imposes an obstacle on the elastic sheet 207. The elastic sheet 207 continues to move and is affected by the rotating block 209 to bend upward. The deformed elastic sheet 207 stores energy under the action of its own elasticity. When the elastic sheet 207 and the rotating block 209 are separated, the deformed elastic sheet 207 quickly recovers and collides with the second rotating block 209 to generate vibration. The elastic sheet 207 repeats the above movement and intermittently collides with the following rotating block 209 to generate continuous vibration. The vibration is generated by the collision between the elastic sheet 207 and the rotating block 209, and then the vibration is transmitted to the moving rectangular plate 19, so that the sealing cover plate 2 is affected by the vibration when it is closed and contacts the detection tube 1 more closely.

[0048] When the sealing cover plate 2 is closed, the support rod 205 moves with the linkage plate 206 to move downward. The arc surface 2 of the linkage plate 206 contacts the corrugations of the plurality of rubber plates 212 during the movement. The arc surface 2 moves to squeeze the rubber plate 212. The rubber plate 212 is squeezed and moves toward the second spring sheet 213. The rubber plate 212 moves to squeeze the second spring sheet 213. The second spring sheet 213 is squeezed and deformed. The deformed second spring sheet 213 exerts a reaction force on the rubber plate 212. The rubber plate 212 is affected by the reaction force and moves in the direction of the linkage plate 206. 6 is in close contact, so that friction is generated between the linkage plate 206 and the rubber plate 212 when the linkage plate 206 moves. The linkage plate 206 is affected by the friction force and applies intermittent resistance to the moving support rod 205, thereby slowing down the moving speed of the connecting rod 15. The rubber plate 212 applies intermittent resistance to the linkage plate 206, effectively alleviating the impact force generated by the contact between the sealing cover plate 2 and the detection cylinder 1 when closing, thereby improving the safety of operation. When the operator does not need to use the contact plate 204, he holds the push block 216 when the sealing cover plate 2 is closed. The push block 216 moves toward the carrying frame 211, and the T-shaped block 214 moves toward the linkage plate 206. The T-shaped block 214 squeezes the No. 3 spring piece 215 during the movement, and the No. 3 spring piece 215 is squeezed and deformed. At the same time, the T-shaped block 214 moves and drives the lifting block 217 to move toward the rubber plate 212. The arc surface 3 of the lifting block 217 is separated from the surface in contact with the carrying frame 211 during the movement, so that the deformed No. 4 spring piece 218 is restored and drives the lifting block 217 to move upward. The lifting block 217 passes through the card slot during the movement. A limit is applied to the T-shaped block 214, and at the same time, the inner wall of the rectangular groove of the T-shaped block 214 contacts the linkage plate 206, so that the T-shaped block 214 applies a limit to the linkage plate 206. When the operator opens the sealing cover plate 2, the contact plate 204 remains stationary. When it needs to be restored to use, the lifting block 217 is manually pressed downward to restore the use of the contact plate 204. By applying a limit to the linkage plate 206 by pushing the block 216, the operator can flexibly choose whether to enable the contact plate 204 as needed, thereby improving the adaptability of the contact plate 204.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online monitoring device for industrial exhaust particulate matter concentration, comprising a detection tube (1), characterized in that: The detection cylinder (1) is provided with a sealing cover plate (2) at the top, an air inlet (3) is fixedly penetrated at the top of the sealing cover plate (2), an air outlet (4) is fixedly penetrated at the top of the sealing cover plate (2), a concentration detection mechanism (5) is fixedly penetrated at the top of the sealing cover plate (2), and also includes a maintenance device and an auxiliary device; The maintenance device comprises a driving motor (6), a cross rod (7), a carrying plate (8), a push rod (9), a first spring (10), an extrusion plate (11), a cleaning cloth (12), a first spring sheet (13), a loading frame (14), a connecting rod (15), a C-shaped plate (16), a second spring (17), a limiting rod (18) and a rectangular plate (19), wherein the driving motor (6) is fixedly installed on the top of the sealing cover plate (2), the cross rod (7) is fixedly installed on the output end of the sealing cover plate (2), the carrying plate (8) is fixedly installed on the surface of the cross rod (7), the push rod (9) slides through the inner and outer walls of the cross rod (7), the push rod (9) slides through the inner and outer walls of the carrying plate (8), the first spring (10) is arranged between the push rod (9) and the cross rod (7), the extrusion plate (11) is fixedly installed on a side of the push rod (9) close to the carrying plate (8), and the cleaning cloth (12) is arranged on the inner and outer walls of the carrying plate (8). The first spring sheet (13) is arranged between the extrusion plate (11) and the carrying plate (8), the loading frame (14) is fixedly mounted on the circumferential surface of the detection tube (1), the connecting rod (15) slides through the inner and outer walls of the loading frame (14), the top of the connecting rod (15) is fixedly connected to the sealing cover plate (2), the C-shaped plate (16) slides through the inner and outer walls of the loading frame (14), and the second spring (17) is arranged between the C-shaped plate (16) and the loading frame (14). The limiting rod (18) is slidably penetrated through the inner and outer walls of the loading frame (14), the circumferential surface of the limiting rod (18) is fixedly penetrated through the inner and outer walls of the C-shaped plate (16), the rectangular plate (19) is fixedly mounted on the circumferential surface of the connecting rod (15), the extrusion plate (11) is provided with an arc surface 1 on one side close to the cleaning cloth (12), the cleaning cloth (12) is in contact with the arc surface 1, and the curved surface of the cleaning cloth (12) is in contact with the inner wall of the detection tube (1); A circular hole is formed on the circumferential surface of the connecting rod (15), the circumferential surface of the limiting rod (18) contacts the inner wall of the circular hole, and a spherical surface 1 is formed on a surface of the limiting rod (18) close to the loading frame (14), and the spherical surface 1 contacts the inner wall of the loading frame (14); The auxiliary device comprises a hollow plate (201), a sliding rod (202), a third spring (203), a contact plate (204), a support rod (205), a linkage plate (206), an elastic sheet (207), a plurality of fixed frames (208) and a plurality of rotating blocks (209); the hollow plate (201) is fixedly mounted on the surface of the loading frame (14); the sliding rod (202) slides through the top of the hollow plate (201); the third spring (203) is arranged between the sliding rod (202) and the hollow plate (201); the contact plate (204) is fixedly mounted on the top of the sliding rod (202); the support rod (205) slides through the top of the hollow plate (201); The top of the support rod (205) is fixedly connected to the contact plate (204), the linkage plate (206) is fixedly mounted on the bottom of the support rod (205), the elastic sheet (207) is fixedly mounted on the surface of the linkage plate (206), a plurality of fixed frames (208) are fixedly mounted on the inner wall of the hollow plate (201), a plurality of rotating blocks (209) are rotatably mounted on the inner wall of the fixed frame (208), the top of the contact plate (204) is in contact with the rectangular plate (19), a movable groove is provided on the surface of the hollow plate (201), and the linkage plate (206) is in contact with the inner wall of the movable groove.

2. The online monitoring device for industrial exhaust particulate matter concentration according to claim 1 is characterized in that: An anti-skid groove is provided on a side of the squeezing plate (11) close to the cleaning cloth (12), and the anti-skid groove is in contact with a side of the cleaning cloth (12) close to the push rod (9).

3. The online monitoring device for industrial exhaust particulate matter concentration according to claim 2 is characterized in that: A rectangular block is arranged opposite to the top of the contact plate (204), the rectangular block is in contact with the surface of the rectangular plate (19), and the support rod (205) is in contact with the top of the hollow plate (201).

4. The online monitoring device for industrial exhaust particulate matter concentration according to claim 3 is characterized by: The elastic sheet (207) is arranged in an arc shape, a second arc surface is provided on a side of the linkage plate (206) away from the sliding rod (202), a spiral spring is arranged between the rotating block (209) and the fixed frame (208), and the bottom of the rotating block (209) contacts the inner wall of the fixed frame (208).

5. The on-line monitoring device for industrial tail gas particulate matter concentration according to claim 4 is characterized by: The invention also comprises a safety device, wherein the safety device comprises a carrying frame (211), a rubber plate (212), a second spring piece (213), a T-shaped block (214), a third spring piece (215), a pushing block (216), a lifting block (217) and a fourth spring piece (218); the carrying frame (211) is fixedly mounted on a side of the hollow plate (201) close to the moving groove; the rubber plate (212) slides through the inner wall of the carrying frame (211); the second spring piece (213) is arranged between the rubber plate (212) and the carrying frame (211); the T-shaped block (214) slides through the carrying frame The inner and outer walls of the T-shaped block (211), the third spring piece (215) is arranged between the T-shaped block (214) and the carrying frame (211), the pushing block (216) is fixedly installed on a side of the T-shaped block (214) away from the hollow plate (201), the lifting block (217) slides through the top of the T-shaped block (214), the fourth spring piece (218) is arranged between the lifting block (217) and the T-shaped block (214), a side of the rubber plate (212) away from the second spring piece (213) is provided with corrugations, and a side of the carrying frame (211) close to the lifting block (217) is provided with a slot.

6. The on-line monitoring device for industrial exhaust particulate matter concentration according to claim 5 is characterized by: A rectangular groove is provided on one side of the T-shaped block (214) close to the linkage plate (206); the lifting block (217) is adapted to the size of the slot; a third arc surface is provided on the top of the lifting block (217); the third arc surface contacts the inner wall of the mounting frame (211).

7. A monitoring method of an online monitoring device for industrial exhaust gas particulate matter concentration, using the online monitoring device for industrial exhaust gas particulate matter concentration according to claim 6, characterized in that: The following steps are involved: Step 1: Introduce industrial exhaust gas from the air inlet (3) into the interior of the detection tube (1), start the concentration detection mechanism (5), and the detection end of the concentration detection mechanism (5) performs concentration detection on the industrial exhaust gas inside the detection tube (1); Step 2: After the concentration detection is completed, the operator will actively record the monitoring results. After the recording is completed, the industrial exhaust gas inside the detection tube (1) is discharged through the outlet (4); Step 3: Start the drive motor (6), the output end of the drive motor (6) drives the cross rod (7) to rotate, the rotation of the cross rod (7) drives the carrying plate (8) to move, and at the same time, the rotation of the cross rod (7) drives the push rod (9) to rotate; Step 4: The push rod (9) rotates to drive the extrusion plate (11) to rotate, and at the same time, the carrying plate (8) rotates to drive the cleaning cloth (12) to rotate. The cleaning cloth (12) rotates to clean the inner wall of the detection tube (1) to ensure that the monitoring work can be carried out smoothly next time.

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