CN213933484U - Filter membrane type beta-ray smoke direct-reading detector - Google Patents
Filter membrane type beta-ray smoke direct-reading detector Download PDFInfo
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- CN213933484U CN213933484U CN202021992662.9U CN202021992662U CN213933484U CN 213933484 U CN213933484 U CN 213933484U CN 202021992662 U CN202021992662 U CN 202021992662U CN 213933484 U CN213933484 U CN 213933484U
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- filter membrane
- filter
- type beta
- reading detector
- displacement mechanism
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Abstract
The utility model provides a filter membrane type beta ray smoke dust direct-reading detector, which comprises a sampling tube and a host, wherein the sampling tube is connected with the host through a spring buckle; a linear displacement mechanism, a lifting mechanism and a double-sided drying structure are arranged in the main machine, and the linear displacement mechanism comprises a sliding block and a filter membrane tray; the lifting mechanism comprises a heat tracing pressure nozzle for compressing the filter membrane; and a filter membrane heating assembly is vertically and correspondingly arranged below the heat tracing pressure nozzle. The direct-reading detector performs sampling detection and filter membrane transmission by matching the linear displacement mechanism and the lifting mechanism, and has simple structure and accurate measurement result; the double-sided drying structure formed by the heat tracing pressure nozzle and the filter membrane heating assembly enables the drying efficiency to be high, and meanwhile, the sampling precision is improved.
Description
Technical Field
The utility model belongs to smoke and dust concentration monitoring field especially relates to a filter membrane formula beta ray smoke and dust direct-reading detector.
Background
Nowadays, the concern of the national and social groups on environmental pollution is higher and higher, especially on the fixed pollution source of atmospheric pollution. Atmospheric fixed pollution sources comprise pots and kilns of factories, enterprises and public institutions, food service units and exhaust hoods for life and the like of residents, and the harm of the discharged pollutants to the environment is increasingly obvious. Therefore, the detection of the emitted particulate matter smoke is urgently needed.
The beta ray absorption method for monitoring smoke dust has the advantages of field reading, convenient use and the like. The Chinese patent document with the publication number of CN207147915U discloses an integrated beta-ray smoke concentration direct-reading monitoring device, which comprises a sampling head and a main case, wherein a collecting and weighing unit and a metering unit are installed in the main case, and the sampling head is connected with the main case through a heat tracing hose. 2. When the sampling tube is butted with the host machine, the structure is complex, the butt joint mode is original, and the use is inconvenient. 3. The filter membrane is dried for the single face, probably because drying efficiency is not high to lead to the filter membrane to be drenched by the moisture in the flue, cause the filter membrane to break. 4. The host is not provided with a holding device, and is inconvenient to carry and use on site.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to foretell beta ray smoke and dust direct-reading detector's technical problem, provide a simple structure, the testing result is accurate, and it is convenient to maintain, can keep the filter membrane formula beta ray smoke and dust concentration detector of appearance.
In order to achieve the above object, the utility model discloses a technical scheme be:
a filter film type beta ray smoke direct-reading detector comprises a sampling tube and a host, and is characterized in that: the host computer includes sharp displacement mechanism, sharp displacement mechanism includes filter membrane tray, slider, linear guide rail lead screw slip table module fixed connection the slider, slider fixed connection filter membrane tray.
Preferably, the front end of the sampling tube is provided with a sampling nozzle, and a pitot tube is arranged in the sampling tube.
Preferably, the pitot tube is mounted inside the sampling tube by a positive pitot tube nozzle and a negative pitot tube nozzle.
Preferably, a lifting mechanism is arranged above the linear displacement mechanism, and the lifting mechanism comprises a heat tracing pressure nozzle for pressing the filter membrane.
Preferably, the main machine is provided with a double-sided drying structure, the double-sided drying structure comprises a heat tracing pressure nozzle, and a filter membrane heating assembly is vertically and correspondingly arranged below the heat tracing pressure nozzle.
Preferably, the detector is arranged beside the lifting mechanism, and a beta ray source is vertically and correspondingly arranged below the detector.
Preferably, the linear displacement mechanism is provided with an optoelectronic lead mechanism and an optoelectronic switch.
Preferably, a filter membrane is placed on the filter membrane tray, a filter membrane pressing ring is placed on the filter membrane, and the linear guide rail screw rod sliding table module drives the sliding block, the filter membrane tray, the filter membrane and the filter membrane pressing ring to move in a reciprocating mode in the middle of the double-sided drying structure and in the middle of the detector and the beta ray source.
Preferably, the host computer is externally provided with a host computer shell, the host computer shell is provided with a holding device, the bottom of the host computer shell is provided with a silica gel hose and a connecting wire, and the silica gel hose and the connecting wire are connected with a constant-speed tracking power system.
Preferably, the sampling tube is connected with the host machine through a spring buckle.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
1. adopt dock sampling tube, the sampling tube passes through the spring buckle with the host computer and is connected, dismantles easy operation, and later maintenance is convenient.
2. By adopting the replaceable pitot tube, the whole sampling tube does not need to be replaced after the pitot tube is damaged, so that the maintenance is more convenient, and the maintenance cost is effectively reduced.
3. The filter membrane is dried on both sides through the heat tracing pressure nozzle and the filter membrane heating assembly, so that the filter membrane can be fully dried, and on one hand, the situation that the filter membrane is broken when the filter membrane is pumped after being wetted by water vapor in a flue is prevented; on the other hand, if the filter membrane is not dried sufficiently, the final result may be too much weight gain, which affects the measurement accuracy.
4. The filter membrane is adopted for sampling, and the whole sample can be taken out and placed in the filter membrane box after sampling is finished, so that the sample is convenient to leave, and the source tracing can be realized.
5. The linear displacement mechanism and the lifting mechanism are matched to carry out sampling transmission and double-sided drying of the filter membrane, the structure is simple and compact, and the measuring result is accurate.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the sampling tube of the present invention;
FIG. 3 is a front view of the core assembly of the present invention;
FIG. 4 is a rear view of the core assembly of the present invention;
FIG. 5 is a top view of the linear displacement mechanism of the present invention;
fig. 6 is a schematic view of the lifting mechanism of the present invention;
in the above figures: 1. a sampling nozzle; 2. a pitot tube assembly; 3. a sampling tube assembly; 4. a spring buckle; 5. a pitot tube negative nozzle; 6. a positive connecting nozzle of a pitot tube; 7. a sampling head; 8. a platinum resistor; 9. a housing; 10. A core component; 11. a connecting wire; 12. constant velocity tracking power systems; 13. a silica gel hose; 14. a lifting mechanism; 15. entering an air pipe; 16. a detector; 17. an air inlet bent pipe; 18. a heating coil; 19. a travel switch; 20. a beta ray source; 21. a filter membrane heating assembly; 22. an air outlet; 23. a filter membrane tray; 24. phi 47 filter membrane; 25. pressing a membrane; 26. a heat tracing pressure nozzle; 27. a linear displacement mechanism; 28. a photoelectric lead mechanism; 29. a photoelectric switch; 30. a compression spring; 31. a lifting mechanism spring seat; 32. a cam; 33. a reduction motor; 34. a slider; 35. linear guide rail lead screw slip table module.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
Example (b): as shown in fig. 1-6, a filter membrane type beta-ray smoke direct-reading detector comprises a sampling tube and a host, wherein the sampling tube assembly 3 is connected with a sampling head 7 through threads, a pitot tube assembly 2 is arranged in the sampling tube assembly, a sampling nozzle 1 is arranged at the front end of the sampling head 7, a platinum resistor 8 is arranged in the sampling head 7, the sampling tube assembly 3 is connected with the host through a spring buckle 4, and the sampling tube assembly 3 has a heating function to ensure that smoke cannot be condensed.
The host computer includes casing 9 and core component 10, and core component 10 includes straight line displacement mechanism 27, straight line displacement mechanism 27 includes filter membrane tray 23, slider 34, linear guide rail lead screw slip table module 35, and linear guide rail lead screw slip table module 35 is straight line displacement mechanism 27's driving system, and linear guide rail lead screw slip table module 35 fixed connection slider 34, slider 34 fixed connection filter membrane tray 23, photoelectricity lead mechanism 28 and photoelectric switch 29 are installed on straight line displacement mechanism 27, and elevating system 14 is located straight line displacement mechanism 27 top, and 14 below correspondences of elevating system set up filter membrane heating element 21. The detector 16 is positioned beside the lifting mechanism 14, a beta ray source 20 is vertically and correspondingly arranged below the detector, and the host calculates the weight gain of smoke dust in the smoke by calculating the attenuation and background value of the beta ray. The main machine is connected with a constant-speed tracking power system 12 through a silica gel hose 13 and a connecting line 11.
When measuring before sampling, the control panel sends signal to linear displacement mechanism 27, linear guide rail lead screw slip table module 35 in linear displacement mechanism 27 drives slider 34 and moves to the analysis point position by initial position, wherein install filter membrane tray 23 on the slider, phi 47 filter membrane 24, filter membrane clamping ring 25, when moving to the analysis point position, photoelectric switch 29 senses the position of inducing in photoelectricity lead mechanism 28, send the signal to linear displacement mechanism 27 through the control panel, linear guide rail lead screw slip table module 35 in linear displacement mechanism 27 stops moving, after having analyzed phi 47 filter membrane 24 initial value data, the measurement is accomplished before sampling.
During sampling, smoke enters a host machine through a sampling tube, enters an air inlet tube 15 through an air inlet bent tube 17 with a heating coil 18, meanwhile, a control panel sends a signal to control a linear guide rail lead screw sliding table module 35 in a linear displacement mechanism 27 to continuously drive a sliding block provided with a filter membrane tray 23, a phi 47 filter membrane 24 and a filter membrane pressing ring 25 to move to a sampling point position, when the sliding block moves to the sampling point position, a photoelectric switch 29 senses a sensing position in a photoelectric lead mechanism 28, the signal is sent to the linear displacement mechanism 27 through the control panel, the linear guide rail lead screw sliding table module 35 in the linear displacement mechanism 27 stops moving, the control panel sends the signal to a speed reducing motor 33, the speed reducing motor 33 drives a cam 32 to start rotating, when the cam 32 rotates by 90-270 degrees, the cam 32 and a lifting mechanism spring seat 31 are in a non-contact separation state, a heat tracing pressure nozzle 26 under the lifting mechanism spring seat 31 presses the phi 47 filter membrane 24 by the elasticity of a compression spring 30, drying is carried out simultaneously with the filter membrane heating assembly 21 below the phi 47 filter membrane 24. After sampling, the flue gas enters the silica gel hose 13 from the gas outlet 22 and is discharged from the constant-speed tracking power system 12.
After sampling is completed, after the lifting mechanism 14 completes lifting action, the linear guide rail lead screw sliding table module 35 drives the sliding block 34, the filter membrane tray 23, the phi 47 filter membrane 24 and the filter membrane pressing ring 25 to move to the analysis point position, when the lifting mechanism moves to the analysis point position, the photoelectric switch 29 senses the induction position in the photoelectric lead mechanism 28, signals are sent to the linear displacement mechanism 27 through the control board, the linear guide rail lead screw sliding table module 35 in the linear displacement mechanism 27 stops moving, and after the phi 47 filter membrane 24 sampling value data is analyzed, the linear guide rail lead screw sliding table module 35 in the linear displacement mechanism 27 drives the sliding block 34 to return to the initial position. Wherein the travel switches 19 on both sides of the linear displacement mechanism 27 are used to limit the travel of the slider. The transmission of the sampling and sampling filter membrane is completed through the cooperation of the linear displacement mechanism 27, the lifting mechanism 14 and the photoelectric lead mechanism 28.
The direct-reading detector described above is used as follows,
1. the constant-speed tracking power system is started, the displacement mechanism drives the filter membrane tray, the phi 47 filter membrane and the filter membrane compression ring to move to the position of a detection point between the detector and the beta ray source from the initial position, and measurement before sampling is carried out.
2. After the measurement is finished before sampling, the linear displacement mechanism drives the filter membrane tray, the phi 47 filter membrane and the filter membrane pressure ring to move to a middle sampling point of the filter membrane heating assembly and the lifting mechanism, and the lifting mechanism drives the heat tracing pressure nozzle to descend, so that the heat tracing pressure nozzle compresses the phi 47 filter membrane for sampling.
3. After sampling is finished, the lifting mechanism drives the heat tracing pressure nozzle to rise, so that after the heat tracing pressure nozzle is separated from the phi 47 filter membrane, the linear displacement mechanism drives the filter membrane tray, the phi 47 filter membrane and the filter membrane compression ring to move to the position of a detection point between the detector and the beta ray source, and measurement is carried out after sampling.
4. After the measurement is finished, the linear displacement mechanism drives the filter membrane tray, the phi 47 filter membrane and the filter membrane compression ring to move to the initial position.
5. And opening the shell of the host, taking out the phi 47 filter membrane, and placing the filter membrane in a filter membrane box for sample retention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above-mentioned technical details to various modifications and changes, and equivalent embodiments with equivalent changes, which may be made by using the above-mentioned disclosure, but all simple modifications, equivalent changes and changes made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the present invention.
Claims (10)
1. A filter film type beta ray smoke direct-reading detector comprises a sampling tube and a host, and is characterized in that: the host computer includes sharp displacement mechanism, sharp displacement mechanism includes filter membrane tray, slider, linear guide rail lead screw slip table module fixed connection the slider, slider fixed connection filter membrane tray.
2. The filter type beta-ray smoke direct-reading detector according to claim 1, wherein: the sampling tube front end is equipped with the sample connection mouth, and internally mounted has the pitot tube.
3. The filter type beta-ray smoke direct-reading detector according to claim 2, wherein: the pitot tube is arranged in the sampling tube through a positive pitot tube connecting nozzle and a negative pitot tube connecting nozzle.
4. The filter type beta-ray smoke direct-reading detector according to claim 1, wherein: and a lifting mechanism is arranged above the linear displacement mechanism and comprises a heat tracing pressure nozzle for pressing the filter membrane.
5. The filter type beta-ray smoke direct-reading detector according to claim 1, wherein: the main machine is provided with a double-sided drying structure, the double-sided drying structure comprises a heat tracing pressure nozzle, and a filter membrane heating assembly is vertically and correspondingly arranged below the heat tracing pressure nozzle.
6. The filter film type beta-ray smoke direct-reading detector according to claim 4, wherein: the elevating system side is equipped with the detector, the vertical beta ray source that corresponds in detector below.
7. The filter type beta-ray smoke direct-reading detector according to claim 1, wherein: and the linear displacement mechanism is provided with a photoelectric lead mechanism and a photoelectric switch.
8. The filter type beta-ray smoke direct-reading detector according to any one of claims 1, 5 and 6, wherein: the double-sided drying device is characterized in that a filter membrane is placed on the filter membrane tray, a filter membrane pressing ring is placed on the filter membrane, and the linear guide rail screw rod sliding table module drives the sliding block, the filter membrane tray, the filter membrane and the filter membrane pressing ring to move in the middle of the double-sided drying structure and the detector and the beta ray source in a reciprocating mode.
9. The filter type beta-ray smoke direct-reading detector according to claim 1, wherein: the host computer is equipped with the host computer shell outward, the host computer shell is equipped with holding device, and the bottom is equipped with silica gel hose and connecting wire, the silica gel hose with constant speed tracking driving system is connected to the connecting wire.
10. The filter type beta-ray smoke direct-reading detector according to claim 1, wherein: the sampling tube is connected with the host through a spring buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021992662.9U CN213933484U (en) | 2020-09-11 | 2020-09-11 | Filter membrane type beta-ray smoke direct-reading detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021992662.9U CN213933484U (en) | 2020-09-11 | 2020-09-11 | Filter membrane type beta-ray smoke direct-reading detector |
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| CN213933484U true CN213933484U (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639122A (en) * | 2022-10-26 | 2023-01-24 | 青岛崂应海纳光电环保集团有限公司 | Beta ray smoke and dust gas concentration monitoring device |
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2020
- 2020-09-11 CN CN202021992662.9U patent/CN213933484U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639122A (en) * | 2022-10-26 | 2023-01-24 | 青岛崂应海纳光电环保集团有限公司 | Beta ray smoke and dust gas concentration monitoring device |
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