CN218470476U - Two-channel beta-ray method dust emission online monitor - Google Patents
Two-channel beta-ray method dust emission online monitor Download PDFInfo
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- CN218470476U CN218470476U CN202222496124.6U CN202222496124U CN218470476U CN 218470476 U CN218470476 U CN 218470476U CN 202222496124 U CN202222496124 U CN 202222496124U CN 218470476 U CN218470476 U CN 218470476U
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Abstract
The utility model discloses a binary channels beta-ray method raise dust on-line monitoring appearance, including the mainboard, with mainboard mutual disposition's subplate, establish the rotatory paper feed module of paper tape on the subplate: the paper tape rotating paper feeding module comprises a paper releasing wheel and a paper collecting wheel, a subplate is connected with a linear driving mechanism on a main board, driven energy can linearly move relative to the main board, a detector is arranged above the paper tape rotating paper feeding module, two sampling air channels are separately arranged, a beta ray source is arranged below the detection end of the detector, the beta ray source is arranged on a mounting seat, a paper tape running gap is formed between the mounting seat and a pressure head frame, the sampling air channels extend into a top pressure head hole of a pressure head air inlet chamber, a pressure head frame is arranged between the pressure head air inlet chamber and the mounting seat, two driven liftable pressure head pipes are coaxially arranged with a bottom pressure head hole on the pressure head air inlet chamber respectively and are mounted on the pressure head frame, and the bottom end of each driven liftable pressure head pipe can extend out of the bottom of the pressure head frame. The utility model discloses can once only detect two kinds of data of PM2.5 and PM10 to mutual noninterference.
Description
Technical Field
The utility model relates to a raise dust monitoring technology field especially relates to a binary channels beta ray method raise dust on-line monitoring appearance.
Background
The beta-ray method dust emission monitoring comprises the steps of extracting gas to be detected by using an air pump, arranging filter paper in an air path, and filtering all particulate matters (dust emission) in the extracted gas by the filter paper and keeping the filtered particulate matters on the filter paper. The beta ray radiation source generates beta rays, and the beta rays penetrate through the filter paper and are received by the beta ray detector. The thicker (heavier) the filter, the less beta rays can penetrate the filter and the fewer values the detector shows. And the weight of the filter paper can be calculated according to the value of the detector by combining the calculation of a corresponding calculation formula. Weighing clean filter paper before sampling, and weighing dirty filter paper after sampling, wherein the difference is the weight of dust. According to the cooperation of the flowmeter and the regulating valve, the volume of the sampled gas can be calculated, so that the raise dust concentration (ug/m) of the gas to be measured is obtained 3 ) Thereby realizing the monitoring of particulate matters (dust) in the gas. After the test period is completed, the paper feeding system is started to replace the new filter paper. Wherein each dust point on the filter paper represents one test cycle.
The two-channel equipment of the existing beta-ray method dust emission on-line monitor needs to use two sets of expensive radioactive sources and detectors respectively. This results in high cost and price, which cannot meet market needs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a binary channels beta ray method raise dust on-line monitoring appearance to the technical defect who exists among the prior art.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
the utility model provides a binary channels beta-ray method raise dust on-line monitoring appearance, includes the mainboard, with mainboard mutual disposition's subplate, be equipped with the rotatory paper feed module of paper tape on the subplate: the paper tape rotating paper feeding module comprises a paper placing wheel and a paper collecting wheel, the auxiliary plate is connected with a linear driving mechanism arranged on the main plate, the driven energy is relative to the main plate, a detector and two separately-arranged sampling gas circuits are arranged above the paper tape rotating paper feeding module, a beta ray source is arranged below a detection end of the detector, the beta ray source is arranged on a mounting seat, a paper tape running gap is formed between the mounting seat and a pressure head frame, the sampling gas circuits extend into a top pressure head hole of a pressure head air inlet chamber, the pressure head frame is arranged between the pressure head air inlet chamber and the mounting seat, and two driven energy-lifting pressure head pipes are respectively coaxially arranged with a bottom pressure head hole in the pressure head air inlet chamber and are arranged at the bottom of the pressure head frame, and the bottom end of the pressure head frame can extend out.
The head raising baffle is horizontally fixed in the pressure head frame, three through holes which are linearly arranged and arranged at intervals are formed in the head raising baffle along the length direction of the head raising baffle, and the bottom ends of the two pressure head pipes and the detector positioned between the two pressure head pipes correspondingly penetrate through one through hole.
The pressure head frame comprises an upper plate and a lower plate, the upper plate is connected with the lower plate through vertical plates at two ends, three upper through holes and three lower through holes are formed in the positions, corresponding to the through holes, of the upper plate and the lower plate respectively, the three upper through holes are used for enabling the top ends of two pressure head pipes and the top ends of detectors to extend upwards, and the three lower through holes are used for enabling the two pressure head pipes to extend downwards and enabling the bottom ends of the detectors to extend downwards.
The upper surface of the mounting seat is provided with a limiting groove, three holes are formed in the limiting groove, the three holes correspond to the three through holes and are coaxially arranged, and a radioactive source is arranged in the middle hole.
The limiting groove is internally provided with a pressing sheet, and three matching holes are coaxially arranged on the pressing sheet corresponding to the three through holes.
The auxiliary plate is provided with two paper tape guide rollers which are arranged at intervals along the radial direction, the outer side of one of the paper tape guide rollers is provided with a limit switch for detecting the rotary displacement distance of the paper tape guide roller, and a circular limit piece matched with the limit switch is coaxially arranged at one end of the detected paper tape guide roller.
The rear surface of the main board is provided with two linear displacement limit switches for detecting the linear displacement distance of the auxiliary board, the two linear displacement limit switches are arranged at intervals relatively, a matched limit piece is arranged below the linear displacement limit switches, and the limit piece is fixed on the auxiliary board.
The paper feeding device comprises a paper feeding wheel, a paper receiving wheel, a paper placing wheel, a paper receiving wheel, a driving wheel and a driven wheel, wherein the paper placing wheel and the paper receiving wheel are respectively a driving wheel and the driven wheel, and the driving wheel is connected with a driving motor which is coaxially arranged.
The rear surface of the main board is provided with a pressure head motor, the pressure head motor is connected with a pressure head shaft, a convex block is arranged at the front end of the pressure head shaft, and the convex block is located below the head raising separation blade.
The utility model discloses a binary channels beta ray method raise dust on-line monitoring appearance, binary channels equipment can once only detect two kinds of data of PM2.5 and PM10 to mutual noninterference.
Drawings
Fig. 1 is a schematic view of the two-channel beta-ray method dust emission on-line monitor according to the embodiment of the present invention.
Fig. 2 is another schematic diagram of the two-channel beta-ray method dust emission on-line monitor according to the embodiment of the present invention.
Fig. 3 is a schematic illustration with parts broken away.
Fig. 4 is a view from another perspective, with the same parts removed as in fig. 3.
Fig. 5 is a view of fig. 4 with the paper strap removed.
Fig. 6 is the view of fig. 5 with the flap removed.
Fig. 7 is a schematic view of a head press.
Figure 8 is a schematic view of a head pressure inlet chamber.
Figure 9 is a schematic view of a mounting for a radioactive source.
Fig. 10 is the utility model discloses two-channel beta-ray method raise dust on-line monitoring appearance paper feed sampling schematic diagram.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a binary channels beta-ray method raise dust on-line monitoring appearance, including mainboard 1, with mainboard mutual disposition's subplate 2, be equipped with the rotatory paper feed module of paper tape on the subplate: rotatory paper feed module of paper tape is including putting paper wheel 5 and collection wheel 7, the subplate with install sharp actuating mechanism on the mainboard is connected, and it can be relative to receive the drive mainboard 1 carries out rectilinear movement, detector 6 and two separately arranged sampling gas circuits are arranged to the top of the rotatory paper feed module of paper tape, including left sampling gas circuit 4, right side sampling gas circuit 3, beta ray source is arranged to the detection end below of detector, and beta ray source arranges on mount pad 33, form paper tape operation gap between mount pad and the pressure head frame, the sampling gas circuit stretches into in the top pressure head hole of pressure head air inlet chamber, be pressure head frame between pressure head air inlet chamber and the mount pad, two pressure head pipes 11 that receive the drive can go up and down separately with bottom pressure head hole coaxial configuration on the pressure head air inlet chamber, and install in on the pressure head frame and the bottom can stretch out in the bottom of pressure head frame.
Illustratively, the linear driving mechanism adopts a screw rod motor driving mechanism, and comprises a motor 15 and a screw rod 14, wherein the inner side of the screw rod is provided with a guide rail 21, a screw rod slide block 20 connected with the screw rod is connected with a moving frame 22, and the moving frame is fixed on the rear surface of the auxiliary plate, so that the movement of the auxiliary plate can be controlled.
The detector can be fixed in the pressure head air inlet chamber by adopting a mounting column 28, the detector extends out after penetrating into the pressure head air inlet chamber from the top end of the pressure head air inlet chamber, and the mounting column and the top end of the pressure head air inlet chamber are fixed by adopting a bolt.
The head raising baffle plate 10 is horizontally fixed in the pressure head frame, the head raising baffle plate is fixed with the two pressure head air pipes and moves synchronously, three through holes which are linearly arranged and arranged at intervals are formed in the head raising baffle plate along the length direction of the head raising baffle plate, and the bottom ends of the two pressure head pipes 11 and the detector 6 positioned between the two pressure head pipes correspondingly penetrate through one through hole.
The pressure head frame comprises an upper plate and a lower plate, the upper plate is connected with the lower plate through vertical plates at two ends, three upper through holes and three lower through holes are formed in the positions, corresponding to the through holes, of the upper plate and the lower plate respectively, the three upper through holes are used for enabling the top ends of the two pressure head pipes and the detector to extend upwards, and the three lower through holes are used for enabling the two pressure head pipes to extend downwards and the bottom end of the detector to extend downwards.
Wherein, the upper surface of mount pad 33 is formed with spacing recess, be provided with three holes in the spacing recess, it is three the hole corresponds with three the through-hole is coaxial to be arranged, and middle hole is the blind hole, is provided with radiation source 32 in the hole, the hole of both sides for perpendicular behind the right angle turn down by the side of mount pad is led to the outside to the gas discharge of convenient sampling is outside the mount pad.
The limiting groove is internally provided with a pressing sheet 30, and three matching holes 31 are coaxially arranged on the pressing sheet corresponding to the three through holes.
The auxiliary plate is provided with two paper tape guide rollers which are arranged along the radial direction at intervals, the two paper tape guide rollers comprise a left guide roller 9 and a right guide roller 8, the outer side of one of the paper tape guide rollers is provided with a limit switch 13 for detecting the rotary displacement distance of the paper tape guide roller, and a circular limit sheet 23 matched with the limit switch is coaxially arranged at one end of the detected paper tape guide roller.
The rear surface of mainboard is provided with and is used for detecting linear displacement limit switch 18 of subplate linear displacement distance, linear displacement limit switch is two, separates relatively to arrange, two complex spacing piece 19 has been arranged to the below between the linear displacement limit switch, spacing piece is fixed in on the subplate, also can be fixed in on the mount pad 17 of putting the paper wheel.
One of the paper placing wheel and the paper collecting wheel is a driving wheel, the other one of the paper placing wheel and the paper collecting wheel is a driven wheel, the driving wheel is connected with a driving motor 16 which is coaxially arranged, and the exemplary paper collecting wheel is a driving wheel.
In the embodiment, the rear surface of the main plate is provided with a ram motor 12, the ram motor is connected with a ram shaft 26, and a projection 27 is arranged at the front end of the ram shaft and is located below the head-up blocking sheet 10. The bottom of the head-up separation blade 10 is fixed with the upper end of the spring pressing sleeve 29, the bottom of the spring sleeve is fixed with the pressure head frame and can provide downward pulling force, after the head-up separation blade is driven to be lifted up and loses upward power, the head-up separation blade can reset under the action of the spring sleeve, and at the moment, the pressure head pipe is pressed down and can be contacted with filter paper to be pressed tightly, so that the loss of sampling gas is prevented. Of course, the spring sleeve or the spring may be disposed between the upper end of the head-up blocking piece and the upper plate of the head pressing frame, and the spring or the spring sleeve provides the restoring force of the head-up blocking piece, or other restoring structures are used.
Further, the rear surface of the main board is provided with a pressure head limit switch 24 which is matched with a limit detection sheet 25 arranged on the pressure head shaft to detect the output rotation angle of the pressure head motor. When the pressure head motor rotates, the head raising baffle plate 10 can be lifted, so that the pressure head pipe is lifted and separated from the surface of the filter paper 34, the motor can be controlled to rotate at the moment, the filter paper moves, when detection is needed, the pressure head pipe is separated from the bump 27, moves downwards under the action of the spring pressing sleeve 29, can be in contact with the filter paper and is pressed on the filter paper, the sampling gas enters through the sampling gas path at the moment, and when the gas passes through the filter paper, dust is left on the filter paper.
Detection basic principle:
before sampling, firstly weighing clean filter paper by using a detector, extracting gas to be detected by using an air pump in the sampling process, filtering particulate matters in the extracted gas by using the filter paper, wherein dust can be attached to the filter paper arranged in an air path, and after the sampling is finished, weighing the filter paper by using the detector (for example, the beta ray detector emits beta rays, a beta ray radiation source generates the beta rays, and the beta rays pass through the filter paper and are received by the beta ray detector; and calculating the concentration of the particulate matters in the atmosphere according to the volume of the sampled gas. According to the volume of the sampled gas, the concentration of particulate matters in the atmosphere can be calculated, which is the prior art and is not repeated. The weighing of the left and right two-way filter paper by the detector is realized through the relative movement of the main board and the auxiliary board.
During paper feeding, two sampling points can be adopted during one-time sampling, wherein one sampling point is a PM2.5 sampling point 100, and the other sampling point is a PM2.5 sampling point 200; during secondary sampling, two sampling points are obtained simultaneously, wherein one sampling point is a PM2.5 sampling point 100, the other sampling point is a PM2.5 sampling point 200, the two sampling points are arranged at intervals, and when the paper feeding distance is controlled to be 38mm, the distance between the two different sampling points can be controlled to be 57mm as shown in fig. 10.
The utility model discloses, can realize that two gas circuits can sample simultaneously, can carry out the collection of air data through using PM2.5 cutterbar and PM10 cutterbar in the sample connection cooperation to can obtain the monitoring data of two kinds of air respectively. And finishing a detection period, replacing new filter paper, wherein the paper feeding distance is 2/3 of the distance between two sampling points, so that the continuity of dust points on the paper tape can be ensured.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, it will be obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof;
the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (9)
1. Two-channel beta-ray method raise dust on-line monitoring appearance, its characterized in that, including the mainboard, with mainboard mutual disposition's subplate, be equipped with the rotatory paper feed module of paper tape on the subplate: the paper tape rotating paper feeding module comprises a paper placing wheel and a paper collecting wheel, the auxiliary plate is connected with a linear driving mechanism arranged on the main plate, the driven energy is relative to the main plate, a detector and two separately-arranged sampling gas circuits are arranged above the paper tape rotating paper feeding module, a beta ray source is arranged below a detection end of the detector, the beta ray source is arranged on a mounting seat, a paper tape running gap is formed between the mounting seat and a pressure head frame, the sampling gas circuits extend into a top pressure head hole of a pressure head air inlet chamber, the pressure head frame is arranged between the pressure head air inlet chamber and the mounting seat, and two driven energy-lifting pressure head pipes are respectively coaxially arranged with a bottom pressure head hole in the pressure head air inlet chamber and are arranged at the bottom of the pressure head frame, and the bottom end of the pressure head frame can extend out.
2. The two-channel beta-ray dust emission on-line monitor according to claim 1, wherein a head-up blocking plate is horizontally fixed in the head frame, three through holes which are linearly arranged and arranged at intervals are formed in the head-up blocking plate along the length direction of the head-up blocking plate, and the bottom ends of the two head tubes and the detector positioned between the two head tubes correspondingly penetrate through one through hole.
3. The two-channel beta-ray dust emission online monitor according to claim 2, wherein the pressure head frame comprises an upper plate and a lower plate, the upper plate and the lower plate are connected through vertical plates at two ends, three upper through holes and three lower through holes are respectively formed in the positions of the upper plate and the lower plate corresponding to the through holes, the three upper through holes are used for enabling the top ends of the two pressure head tubes and the detector to extend upwards, and the three lower through holes are used for enabling the two pressure head tubes to extend downwards and the bottom end of the detector to extend downwards.
4. The two-channel beta-ray method dust emission on-line monitor according to claim 3, wherein a limiting groove is formed on the upper surface of the mounting base, three holes are formed in the limiting groove, the three holes are coaxially arranged with the three through holes and correspond to the three through holes, and a radioactive source is arranged in the middle hole.
5. The two-channel beta-ray method dust on-line monitor according to claim 4, wherein a pressing sheet is arranged in the limiting groove, and three matching holes are coaxially arranged on the pressing sheet corresponding to the three through holes.
6. The two-channel beta-ray method dust emission on-line monitor according to claim 1, wherein the sub-plate is provided with two paper tape guide rollers which are arranged at intervals along the radial direction, a limit switch for detecting the rotational displacement distance of one of the paper tape guide rollers is arranged on the outer side of the one of the paper tape guide rollers, and a circular limit piece matched with the limit switch is coaxially arranged at one end of the detected paper tape guide roller.
7. The two-channel beta-ray method dust emission online monitor according to claim 1, wherein two linear displacement limit switches for detecting the linear displacement distance of the secondary plate are arranged on the rear surface of the main plate, the two linear displacement limit switches are arranged in a spaced manner, a matched limit sheet is arranged below the two linear displacement limit switches, and the limit sheet is fixed on the secondary plate.
8. The two-channel beta-ray method dust emission on-line monitor according to claim 1, wherein one driving wheel and the other driving wheel are driven wheels, and the driving wheels are connected with coaxially arranged driving motors.
9. The two-channel beta-ray dust emission online monitor according to claim 2, wherein a pressure head motor is arranged on the rear surface of the main board, the pressure head motor is connected with a pressure head shaft, a protruding block is arranged at the front end of the pressure head shaft, and the protruding block is located below the head-up blocking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496124.6U CN218470476U (en) | 2022-09-21 | 2022-09-21 | Two-channel beta-ray method dust emission online monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496124.6U CN218470476U (en) | 2022-09-21 | 2022-09-21 | Two-channel beta-ray method dust emission online monitor |
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| Publication Number | Publication Date |
|---|---|
| CN218470476U true CN218470476U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222496124.6U Active CN218470476U (en) | 2022-09-21 | 2022-09-21 | Two-channel beta-ray method dust emission online monitor |
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| CN (1) | CN218470476U (en) |
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