CN211927422U - Aerosol sample sampling device capable of realizing automatic sampling - Google Patents
Aerosol sample sampling device capable of realizing automatic sampling Download PDFInfo
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- CN211927422U CN211927422U CN202020439733.6U CN202020439733U CN211927422U CN 211927422 U CN211927422 U CN 211927422U CN 202020439733 U CN202020439733 U CN 202020439733U CN 211927422 U CN211927422 U CN 211927422U
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Abstract
The utility model relates to a sampling device, in particular to can realize automatic sampling's aerosol sample sampling device has solved current sampling device and can not both satisfied the sample and the encapsulation that can accomplish a plurality of samples automatically simultaneously, satisfies the operation requirement's that forms the aerosol and is sampled with the dust material of object surface or target location problem again at specific location. The device is characterized in that: the rotary table unit comprises a rotary table driving motor and a rotary table which is arranged in a cavity which is formed by fixedly connecting a front protective cover and a rear protective cover; four through holes which are uniformly distributed along the circumference and take the output shaft of the turntable driving motor as the center are arranged on the turntable; the front protective cover is provided with a filter material unit loading hole, an online filtering hole, a filter material plugging hole and a filter material unloading hole which are respectively coaxial with the four through holes and are sequentially arranged along the clockwise direction; the first air inlet pipe is coaxial with the online filtering hole; the filter material unit, the filter material plug and the closed filter material unit are respectively pushed by a filter material driving motor, a plug driving motor and a filter material recovery motor to move.
Description
Technical Field
The utility model relates to a sampling device, in particular to can realize aerosol sample sampling device of automatic sample.
Background
The aerosol sampling analysis technology is widely applied in the fields of medicine, energy, environment, nuclear technology and the like. Aerosol samples are an important classification in sampling samples, and sampling techniques thereof have made great progress. The information such as nuclide distribution and source in the polluted region can be obtained by sampling and analyzing samples at different positions of the radioactive polluted region. Therefore, the related sampling or sampling technique is one of the most critical techniques, and is worthy of research and development.
In 1998, the institute of inorganic application chemistry, hamburger university, germany, developed the AUTOSCAN system (Automated Sampling and Chemical analysis of Atmospheric Parameters) for studying the elemental composition exported from shore to Sea near the coastline, which included an Automated Aerosol Sampling subsystem (s.tamm, m.schulz. Automated Aerosol Sampling above a North Sea ferry.j.aerosol sci.vol.30, supply.1, pp.s189-S190,1999). The system adopts 5 pre-installed filter units, and adopts a remote control mode to start and close the filter units, so as to realize the sampling of aerosol on coastlines at different places. According to the technology, the automatic sampling control of the pre-installed filter units is realized only by using the electric control switch, the filter units are relatively complete equipment, the whole device is large after integration, and the sampling quantity is limited.
In 1997, the national laboratories of the northwest pacific united states, in order to meet CTBT treaties ON the radioactivity monitoring of aerosols in air, established an Automated Radionuclide Aerosol Sampler and Analyzer system RASA (Radionuclide Aerosol Sampler/Analyzer) which integrates a set of Radionuclide Aerosol Sampler devices (s.m. bowyer et al, Automated Particulate sample For Comprehensive Test Ban treat version.ieee transport ON NUCLEAR device SCIENCE, vol.44, No.3, JUNE 1997), see fig. 1. The device adopts 6 strip filter media 02 of 10cm x 40cm, the strip filter media 02 are provided by a filter media supply point 01 and are vertically loaded on a filter media loading frame 03, after aerosol filtration is finished, the 6 strip filter media 02 are simultaneously drawn by a driving squeezing roller 06 to pass through a filter media packaging squeezing roller 04 to be squeezed and packaged together, and then the aerosol is transmitted to the periphery of a detector 07 to be measured along a driving transmission line 05. The automatic aerosol sampling device is mainly used for background samples with extremely low sample quantity, and has two defects:
(1)6 pieces of strip-shaped filter materials 02 are distributed in a fan shape, and aerosol on the strip-shaped filter materials 02 is unevenly distributed due to uneven air flow when the air flow passes through;
(2) the transmission distance of the strip-shaped filter material 02 before packaging is longer, the area of the strip-shaped filter material 02 is larger, and part of filtered aerosol can be lost when the strip-shaped filter material 02 shakes or contacts other components in the traction process, so that the measurement uncertainty is increased.
In 2013, Li Hexian in his doctor's thesis designed a device for automatically sampling and monitoring plutonium aerosol, which used a reel loaded with a continuous roll of filter paper as the filter material, and a motor controlled the other reel, and further controlled the reel to move to achieve the purpose of filter material replacement and measurement. The device has no filter material packaging function, has low requirement on the safety of samples, and is only suitable for sampling environmental atmospheric aerosol (Li Huixin, plutonium aerosol continuous monitoring technology research and equipment development under high radon environment, doctor academic paper of nuclear science and technical specialty engineering of Qinghua university, 2013).
The invention discloses a sampling device for radioactive aerosol, which is a Chinese patent with an authorized publication number of CN 209961746U and an authorized publication date of 2020.01.17, wherein the replacement mode of a filter material in the sampling device is basically consistent with the above documents. The invention discloses a Chinese patent with the title of 'an aerosol sampler', the number of an authorized bulletin is 'CN 209372645U', the date of the authorized bulletin is '2019.09.10', the sampler disclosed only adopts a single-path filtering structure, is only suitable for collecting a single sample, needs to manually replace a filtering material unit to finish sampling for many times, and is mainly characterized in that the structure is still fixed.
All the aerosol sampling devices adopt a natural environment sampling mode, and do not actively generate aerosol.
The general investigation work for radioactive contamination areas needs to obtain samples in different places through remote control, which not only requires that an aerosol sampling device can automatically complete sampling and packaging of multiple samples, but also requires that substances on the surface of an object or the ground of a target place are formed into aerosol and sampled at a specific place. There is currently no technology or device that meets the above technical requirements.
Disclosure of Invention
The utility model aims at providing a can realize automatic sampling's aerosol sample sampling device to solve current sampling device and both can not satisfy the sample and the encapsulation that can accomplish a plurality of samples automatically simultaneously, satisfy again and form the subaerial dust material aerosol of object surface or target location and by the technical problem of sampling operation requirement at specific location.
The utility model discloses the technical scheme who adopts is, an aerosol sample sampling device that can realize automatic sampling, its special character lies in:
comprises a filter material loading and unloading unit, a gas loop unit, a plurality of filter material units and a plurality of filter material plugs;
the filter material loading and unloading unit comprises a rotary table unit, a filter material storage pipe, a filter material plug storage pipe, a filter material recovery pipe, a filter material driving motor, a plug driving motor and a filter material recovery motor;
the turntable unit comprises a rear protective cover, a front protective cover, a turntable and a turntable driving motor; the front protective cover and the rear protective cover are fixedly connected to enclose a cavity; the rotary disc is arranged in the cavity; the rear end face of the rear protective cover, the disc face of the rotary disc and the front end face of the front protective cover are parallel; after the filter material unit is blocked by the filter material plug, the formed combined component is a closed filter material unit; the size of the cavity along the front-back direction is matched with the height of the closed filter material unit; the turntable driving motor is arranged on the rear protective cover, and an output shaft of the turntable driving motor vertically penetrates through the rear end face of the rear protective cover and is connected with the turntable;
four through holes with the same size are vertically arranged on the disc surface of the rotary disc, and the four through holes are uniformly distributed along the circumference by taking the output shaft of the rotary disc driving motor as the center; the radial sizes of the four through holes are matched with the radial size of the closed filter material unit;
a filter material unit loading hole, an online filtering hole, a filter material plugging hole and a filter material unloading hole which are respectively and correspondingly coaxial with the four through holes and are sequentially arranged along the clockwise direction or the anticlockwise direction are vertically arranged on the front end surface of the front protective cover;
the filter material storage pipe, the filter material plug storage pipe and the filter material recovery pipe are all arranged on one side in front of the rotary table unit, are correspondingly and respectively coaxially arranged with the filter material unit loading hole, the filter material plugging hole and the filter material unloading hole, and are fixedly connected with the front protective cover;
the filter material driving motor and the plug driving motor are respectively arranged in the inner cavities of the filter material storage pipe and the filter material plug storage pipe or at one end of the filter material plug storage pipe, which is far away from the turntable unit;
the filter material recovery motor is arranged on the rear protective cover, and an output shaft of the filter material recovery motor vertically penetrates through the rear end face of the rear protective cover, points to the filter material unloading hole and is coaxial with the filter material unloading hole;
the gas loop unit comprises a flow guide cover, a first gas inlet pipe, an outer sealing head, an inner sealing head, a second gas inlet pipe, a gas pump, a gas outlet pipe and a conical gas nozzle;
the front end of the first air inlet pipe is connected with the air guide sleeve, and the rear end of the first air inlet pipe is connected with the front protective cover through the outer sealing head and is coaxial with the online filtering hole; the front end of the second air inlet pipe is connected with the rear protective cover through the inner sealing head, and the rear end of the second air inlet pipe is connected with an air inlet of the air pump; the inner sealing head and the outer sealing head are coaxially arranged; the air outlet of the air pump is connected with the conical air jet through an air outlet pipe;
the plurality of filter material units are sequentially arranged in the filter material storage pipe, and one ends of the filter material units, which are matched with the filter material plugs, point to the front; the filter material unit can move to one side of the turntable under the pushing of the filter material driving motor;
the height dimension of the filter material unit is larger than the thickness dimension of the turntable, and is matched with the distance between the outer sealing head and the inner sealing head;
the plurality of filter material plugs are sequentially arranged in the filter material plug storage pipe, and one end, matched with the filter material unit, of each filter material plug points to the rear; the filter material plug can move to one side of the turntable under the pushing of the plug driving motor;
the filter material recovery motor can push the closed filter material unit to move into the filter material recovery pipe.
Further, the filter material unit comprises a filter material base, a filter material supporting net, a filter material and a filter material compression ring;
the filter material base is cylindrical, and the bottom of the filter material base is provided with an inward limiting boss;
the filter material supporting net is embedded into the bottom of the inner cavity of the filter material base and is axially positioned through the limiting boss;
the filter material is placed on the upper part of the filter material supporting net;
the filter material pressing ring is positioned at the upper part of the filter material and is connected with the filter material base, and the filter material is pressed by the filter material pressing ring;
the filter material end cap is embedded into the inner cavity of the filter material compression ring. The filter material plug is embedded into the inner cavity of the filter material compression ring, so that the sample is prevented from being polluted and leaking.
Furthermore, one end of the outer sealing head, which is connected with the front protective cover, extends into the cavity, and a first O-shaped sealing ring is arranged at the end;
one end of the inner sealing head, which is connected with the rear protective cover, extends into the cavity, and a second O-shaped sealing ring is arranged at the end;
through setting up the distance between first O type sealing washer and the second O type sealing washer, make first O type sealing washer and second O type sealing washer respectively with the both ends in close contact with of filter media unit seals. Therefore, the sealing structure is simple and the sealing effect is good. The height dimension of filter media unit is greater than the thickness dimension of carousel, like this, can prevent that the carousel from rotating the in-process, carousel and external seal head, interior sealing head face contact, produce the friction, are unfavorable for the carousel to rotate.
Further, the second air inlet pipe comprises an air inlet corrugated pipe. Thus, the turntable unit can be turned relative to the air pump, and further can drive the air guide sleeve to turn relative to the air pump.
Further, the air outlet pipe comprises an air outlet corrugated pipe. Thus, the conical air nozzle can be turned relative to the air pump, and the direction of the blown aerosol can be changed.
Further, the rear protective cover is in a circular plate shape;
the front protective cover is barrel-shaped;
and the turntable driving motor is arranged in the center of the rear end surface of the rear protective cover. Thus, the structure is symmetrical and the arrangement is convenient.
Further, the device also comprises a control device;
the control device controls the start and stop of the turntable driving motor, the filter material driving motor, the plug driving motor and the filter material recovery motor.
The utility model has the advantages that:
(1) the utility model discloses an aerosol sample sampling device that can realize automatic sampling ingeniously utilizes the rotation of carousel and the business turn over gas process of air pump, can carry a plurality of filter media units once, utilizes the carousel to rotate and realizes the automatic conversion of four key processes of loading, filtration, sealing and uninstallation of filter media units, utilizes the gas process of giving vent to anger of air pump to blow and float the aerosol, utilizes the inspiration process and the filter media unit of air pump to realize blowing and floating the filtration sampling of aerosol; therefore, the utility model provides a current sampling device can not both satisfy the sample and the encapsulation that can accomplish a plurality of samples automatically simultaneously, satisfy again with object surface or the subaerial dust material formation aerosol of target site and by the operation requirement's of sampling technical problem at specific location.
(2) The utility model discloses a can realize aerosol sample sampling device of automatic sampling has not only improved sample efficiency, and its simple structure, light in weight are favorable to the integration on unmanned inspection device moreover.
(3) The utility model discloses a can realize aerosol sample sampling device of automatic sample, sample safety, accuracy height.
Drawings
FIG. 1 is a schematic diagram of the structure of a set of radionuclide aerosol Sampler devices integrated in the RASA of the established Automated radionuclide aerosol Sampler and analyzer system, referred to in the background art as "S.M. Bowyer et al, Automated Particulate Sampler For Comprehensive Test Ban treat verification. IEEE TRANSACTIONS NUCLEAR SCIENCE, VOL.44, NO.3, JUNE 1997";
the reference numerals in fig. 1 are explained as follows:
01-filter material supply point, 02-strip filter material, 03-filter material loading frame, 04-filter material packaging squeezing roller, 05-driving transmission line, 06-driving squeezing roller and 07-detector.
Fig. 2 is a schematic three-dimensional structure diagram of a viewing angle according to an embodiment of the present invention;
fig. 3 is a schematic three-dimensional structure diagram of another view angle according to an embodiment of the present invention;
FIG. 4 is an exploded view of a partial explosion of an embodiment of the present invention;
FIG. 5 is an exploded view of a closed filter element according to an embodiment of the present invention;
FIG. 6 is a schematic view of the filter unit, the filter driving motor, and the filter storage tube according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of an embodiment of the present invention illustrating an assembly of a filter plug, a plug driving motor, and a filter plug storage tube;
fig. 8 is a schematic structural diagram of O-ring seals disposed on the outer seal head and the inner seal head in the embodiment of the present invention (the first O-ring seal disposed on the outer seal head is not shown in the figure);
the reference numerals in fig. 2 to 8 are explained as follows:
1-an air pump, 201-a first air inlet pipe, 202-a second air inlet pipe, 3-an air outlet pipe, 4-a rotary table unit, 5-a filter medium storage pipe, 6-a filter medium recovery pipe, 7-a filter medium stopper storage pipe, 8-a filter medium recovery motor, 9-a rotary table drive motor, 10-an air inlet bellows, 11-a conical air nozzle, 12-a stopper drive motor, 13-a filter medium drive motor, 14-a guide cover, 15-an outer seal head, 16-an inner seal head, 17-a rear protective cover, 18-a front protective cover, 19-a rotary table, 20-a first through hole, 21-a second through hole, 22-a third through hole, 23-a fourth through hole, 24-a filter medium unit, 25-a filter medium base, 26-a filter medium support net, 27-a filter medium, 28-filter pressing ring, 29-filter plug, 30-sealed filter unit, 31-second O-shaped sealing ring and 32-air outlet corrugated pipe.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2, fig. 3 and fig. 4, the utility model relates to an aerosol sample sampling device capable of realizing automatic sampling, which comprises a filter material loading and unloading unit, a gas loop unit, a plurality of filter material units 24 and a plurality of filter material plugs 29.
The filter material loading/unloading unit includes a turntable unit 4, a filter material storage pipe 5, a filter material stopper storage pipe 7, a filter material recovery pipe 6, a filter material drive motor 13, a stopper drive motor 12, and a filter material recovery motor 8.
The turntable unit 4 comprises a rear protective cover 17, a front protective cover 18, a turntable 19 and a turntable driving motor 9; the front protective cover 18 is fixedly connected with the rear protective cover 17 to form a cavity; the rotary disc 19 is arranged in the cavity; the rear end surface of the rear protective cover 17, the disc surface of the rotary disc 19 and the front end surface of the front protective cover 18 are parallel; in the present embodiment, it is preferable that the rear protection cover 17 is circular plate-shaped; the front protective cover 18 is barrel-shaped; referring to fig. 5, a closed filter unit 30 is defined as a combined member formed after the filter unit 24 is closed by the filter plug 29; the size of the cavity along the front-back direction is matched with the height of the closed filter material unit 30; the turntable driving motor 9 is arranged on the rear protective cover 17, and an output shaft of the turntable driving motor is connected with the turntable 19 after vertically penetrating through the rear end surface of the rear protective cover 17; in the present embodiment, it is preferable that the turntable drive motor 9 is installed in the center of the rear end surface of the rear protection cover 17. Four through holes 20, 21, 22 and 23 with the same size are vertically arranged on the disc surface of the turntable 19, and the four through holes 20, 21, 22 and 23 are uniformly distributed along the circumference by taking the output shaft of the turntable driving motor 9 as the center; the radial sizes of the four through holes 20, 21, 22 and 23 are matched with the radial size of the closed filter material unit 30; a filter material unit loading hole, an online filtering hole, a filter material plugging hole and a filter material unloading hole which are respectively coaxial with the four through holes 20, 21, 22 and 23 and are sequentially arranged along the clockwise direction or the anticlockwise direction are vertically arranged on the front end surface of the front protective cover 18; in the embodiment, the components are sequentially arranged along the anticlockwise direction; of the four through holes 20, 21, 22, 23, the through holes coaxial with the filter unit loading hole, the on-line filtering hole, the filter plugging hole and the filter unloading hole are defined as a first through hole 20, a second through hole 21, a third through hole 22 and a fourth through hole 23. The filter material storage tube 5, the filter material plug storage tube 7 and the filter material recovery tube 6 are all arranged on one side in front of the rotary table unit 4, and are correspondingly and coaxially arranged with the filter material unit loading hole, the filter material plug hole and the filter material unloading hole respectively, and are fixedly connected with the front protective cover 18. The filter material driving motor 13 and the plug driving motor 12 are respectively arranged in the inner cavities of the filter material storage pipe 5 and the filter material plug storage pipe 7 or at one end thereof far away from the turntable unit 4; the filter material recovery motor 8 is mounted on the rear protective cover 17, and an output shaft of the filter material recovery motor vertically penetrates through the rear end face of the rear protective cover 17, points to the filter material unloading hole and is coaxial with the filter material unloading hole.
The gas loop unit comprises a flow guide cover 14, a first gas inlet pipe 201, an outer sealing head 15, an inner sealing head 16, a second gas inlet pipe 202, a gas pump 1, a gas outlet pipe 3 and a conical gas nozzle 11.
The front end of the first air inlet pipe 201 is connected with the air guide sleeve 14, and the rear end of the first air inlet pipe is connected with the front protective cover 18 through the outer sealing head 15 and is coaxial with the online filtering hole; the front end of the second air inlet pipe 202 is connected with the rear protective cover 17 through the inner sealing head 16, and the rear end is connected with an air inlet of the air pump 1; the inner sealing head 16 and the outer sealing head 15 are coaxially arranged; the air outlet of the air pump 1 is connected with the conical air jet 11 through the air outlet pipe 3. The conical air nozzle 11 can form high-speed air flow, and the air guide sleeve 14 can ensure that aerosol generated in the front direction can smoothly enter the first air inlet pipe 201. The height dimension of the filtering material unit 24 is larger than the thickness dimension of the rotary disc 19, and is matched with the distance between the outer sealing head 15 and the inner sealing head 16. Referring to fig. 8, in this embodiment, in order to ensure that the air path not only has good sealing effect, but also has simple sealing structure, it is preferable that the end of the outer sealing head 15 connected with the front protection cover 18 extends into the cavity, and a first O-ring is disposed at the end; one end of the inner sealing head 16 connected with the rear protective cover 17 extends into the cavity, and a second O-shaped sealing ring 31 is arranged at the end; by setting the distance between the first O-ring and the second O-ring 31, the first O-ring and the second O-ring 31 can be brought into close contact with both ends of the filter unit 24, respectively, to perform sealing. Referring to fig. 2, 3 and 4, in order to enable the turntable unit 4 to rotate relative to the air pump 1 and further to enable the air guide 14 to rotate relative to the air pump 1, it is preferable that the second air inlet pipe 202 includes an air inlet bellows 10. In order to make the conical air nozzle 11 turnable with respect to the air pump 1 and thus change the direction of the blown aerosol, it is preferable that the air outlet tube 3 comprises an air outlet bellows 32.
Referring to fig. 6, the plurality of filter units 24 are sequentially disposed in the filter storage pipe 5, and one end of each filter unit 24, which is engaged with the filter plug 29, points forward; the filter unit 24 is movable toward the rotary table 19 by the driving motor 13. Referring to fig. 5, in the present embodiment, preferably the filter unit 24 includes a filter base 25, a filter support net 26, a filter 27, and a filter clamp ring 28; the filter material base 25 is cylindrical, and the bottom of the filter material base is provided with an inward limiting boss; in order to make the filter material 27 bear the air pressure, the filter material supporting net 26 is embedded into the bottom of the inner cavity of the filter material base 25 and is axially positioned by the limiting lug boss; the filter 27 is placed on the upper part of the filter support net 26; the filter pressing ring 28 is located above the filter 27, is connected to the filter base 25, and presses the filter 27 by the filter pressing ring 28. Filter plug 29 is inserted into the lumen of filter clamp ring 28 so that the sample does not become contaminated and leak.
Referring to fig. 7, the plurality of filter plugs 29 are sequentially disposed in the filter plug storage tube 7, and one end of the filter plug 29, which is engaged with the filter unit 24, points rearward; the filter stopper 29 can move to the side of the turntable 19 under the driving of the stopper driving motor 12. The filter recovery motor 8 can move the closed filter unit 30 into the filter recovery pipe 6.
The aerosol sampling device capable of realizing automatic sampling of the embodiment preferably further comprises a control device (the control device is not shown in the figure). The control device controls the start and stop of the turntable driving motor 9, the filter material driving motor 13, the plug driving motor 12 and the filter material recovery motor 8.
The working process of the aerosol sample sampling device capable of realizing automatic sampling adopting the embodiment is as follows:
(1) referring to fig. 6, a plurality of filter units 24 are loaded into the filter storage pipe 5; referring to fig. 7, the same number of filter plugs 29 are loaded into filter plug storage tube 7; referring to fig. 2, 3 and 4, the filter material storage tube 5 and the filter material plug storage tube 7 are respectively connected to the filter material unit loading hole and the filter material plug hole on the front protective cover 18;
(2) referring to fig. 4, the filter driving motor 13 is started to push the first filter unit 24 into the first through hole 20; then, a turntable driving motor 9 is started to drive a turntable 19 to rotate 90 degrees anticlockwise, the rotation is stopped, and a first filter material unit 24 is brought to the position of an online filter hole by a first through hole 20; at this time, the air pump 1 is started, the aerosol blown up by the conical air jet 11 is filtered onto the filter material 27 in the first filter material unit 24 through the air guide sleeve 14 and the first air inlet pipe 201, and the air pump 1 is closed after the preset time is reached; then, the filter driving motor 13 is started to push the second filter unit 24 into the fourth through hole 23; then, the turntable driving motor 9 is started, the turntable 19 is driven to rotate 90 degrees anticlockwise again, the rotation is stopped, the first through hole 20 brings the first filter material unit 24 to the filter material plugging hole position, and meanwhile, the fourth through hole 23 brings the second filter material unit 24 to the online filter hole position for standby; at this time, the plug driving motor 12 is started to push the first filtering material plug 29 to plug the first filtering material unit 24 with the filtered sample, so as to form a first sealed filtering material unit 30;
(3) starting the air pump 1 again, filtering the aerosol blown up by the conical air jet 11 onto the filter material 27 in the second filter material unit 24 through the air guide sleeve 14 and the first air inlet pipe 201, and closing the air pump 1 after the preset time is reached; then, the filter material driving motor 13 is started to push the third filter material unit 24 into the third through hole 22; then, a turntable driving motor 9 is started, the turntable 19 is driven to rotate 90 degrees anticlockwise again, the rotation is stopped, the first through hole 20 brings the first closed filter material unit 30 to a filter material unloading hole position, the fourth through hole 23 brings the second filter material unit 24 to a filter material plugging hole position, and the third through hole 22 brings the third filter material unit 24 to an online filter hole position for standby; at this time, the plug driving motor 12 is started to push the second filter plug 29 to plug the second filter unit 24 with the filtered sample, so as to form a second sealed filter unit 30; at the same time, the filter recovery motor 8 is started to push the first closed filter unit 30 into the filter recovery pipe 6.
(4) According to the cyclic operation of the processes, the loading, filtering, plugging and unloading processes of the filter material can be continuously realized, and the automatic operation can be realized through programming.
Claims (7)
1. The utility model provides a can realize aerosol sample sampling device of automatic sampling which characterized in that:
comprises a filter material loading and unloading unit, a gas loop unit, a plurality of filter material units (24) and a plurality of filter material plugs (29);
the filter material loading and unloading unit comprises a rotary table unit (4), a filter material storage pipe (5), a filter material plug storage pipe (7), a filter material recovery pipe (6), a filter material driving motor (13), a plug driving motor (12) and a filter material recovery motor (8);
the turntable unit (4) comprises a rear protective cover (17), a front protective cover (18), a turntable (19) and a turntable driving motor (9); the front protective cover (18) is fixedly connected with the rear protective cover (17) to form a cavity; a turntable (19) is arranged in the cavity; the rear end surface of the rear protective cover (17), the disc surface of the rotary disc (19) and the front end surface of the front protective cover (18) are parallel; after the filter unit (24) is blocked by the filter plug (29), the formed combined component is a closed filter unit (30); the size of the cavity along the front-back direction is matched with the height of the closed filter material unit (30); the turntable driving motor (9) is arranged on the rear protective cover (17), and an output shaft of the turntable driving motor vertically penetrates through the rear end face of the rear protective cover (17) and then is connected with the turntable (19);
four through holes (20, 21, 22, 23) with the same size are vertically arranged on the disc surface of the turntable (19), and the four through holes (20, 21, 22, 23) are uniformly distributed along the circumference by taking the output shaft of the turntable driving motor (9) as the center; the radial sizes of the four through holes (20, 21, 22, 23) are matched with the radial size of the closed filter material unit (30);
a filter material unit loading hole, an online filtering hole, a filter material plugging hole and a filter material unloading hole which are respectively coaxial with the four through holes (20, 21, 22 and 23) and are sequentially arranged along the clockwise direction or the anticlockwise direction are vertically arranged on the front end surface of the front protective cover (18);
the filter material storage pipe (5), the filter material plug storage pipe (7) and the filter material recovery pipe (6) are all arranged on one side in front of the turntable unit (4), and are correspondingly and respectively coaxially arranged with the filter material unit loading hole, the filter material plugging hole and the filter material unloading hole, and are fixedly connected with the front protective cover (18);
the filter material driving motor (13) and the plug driving motor (12) are respectively arranged in the inner cavities of the filter material storage pipe (5) and the filter material plug storage pipe (7) or at one end of the filter material plug storage pipe and the end of the filter material plug storage pipe, which is far away from the turntable unit (4);
the filter material recovery motor (8) is arranged on the rear protective cover (17), and an output shaft of the filter material recovery motor vertically penetrates through the rear end face of the rear protective cover (17), points to the filter material unloading hole and is coaxial with the filter material unloading hole;
the gas loop unit comprises a flow guide cover (14), a first gas inlet pipe (201), an outer sealing head (15), an inner sealing head (16), a second gas inlet pipe (202), a gas pump (1), a gas outlet pipe (3) and a conical gas nozzle (11);
the front end of the first air inlet pipe (201) is connected with the air guide sleeve (14), and the rear end of the first air inlet pipe is connected with the front protective cover (18) through an outer sealing head (15) and is coaxial with the online filtering hole; the front end of the second air inlet pipe (202) is connected with a rear protective cover (17) through an inner sealing head (16), and the rear end of the second air inlet pipe is connected with an air inlet of the air pump (1); the inner sealing head (16) and the outer sealing head (15) are coaxially arranged; the air outlet of the air pump (1) is connected with the conical air jet (11) through the air outlet pipe (3);
the plurality of filter material units (24) are sequentially arranged in the filter material storage pipe (5), and one end of each filter material unit (24) matched with the corresponding filter material plug (29) points to the front; the filter material unit (24) can move to one side of the turntable (19) under the pushing of the filter material driving motor (13);
the height dimension of the filter material unit (24) is larger than the thickness dimension of the rotary disc (19), and the filter material unit is matched with the distance between the outer sealing head (15) and the inner sealing head (16);
the plurality of filter material plugs (29) are sequentially arranged in the filter material plug storage pipe (7), and one end, matched with the filter material unit (24), of each filter material plug (29) points to the rear; the filter material plug (29) can move towards one side of the turntable (19) under the pushing of the plug driving motor (12);
the filter material recovery motor (8) can push the closed filter material unit (30) to move into the filter material recovery pipe (6).
2. An automatically sampling enabled aerosol sample sampling device according to claim 1, wherein:
the filter unit (24) comprises a filter base (25), a filter supporting net (26), a filter (27) and a filter pressing ring (28);
the filter material base (25) is cylindrical, and the bottom of the filter material base is provided with an inward limiting boss;
the filter material supporting net (26) is embedded into the bottom of the inner cavity of the filter material base (25) and is axially positioned through the limiting boss;
the filter material (27) is placed on the upper part of the filter material supporting net (26);
the filter material pressing ring (28) is positioned at the upper part of the filter material (27) and is connected with the filter material base (25), and the filter material (27) is pressed through the filter material pressing ring (28);
the filter material plug (29) is embedded into the inner cavity of the filter material compression ring (28).
3. An aerosol sample sampling device capable of realizing automatic sampling according to claim 1 or 2, wherein:
one end of the outer sealing head (15) connected with the front protective cover (18) extends into the cavity, and a first O-shaped sealing ring is arranged at the end;
one end of the inner sealing head (16) connected with the rear protective cover (17) extends into the cavity, and a second O-shaped sealing ring (31) is arranged at the end;
the distance between the first O-shaped sealing ring and the second O-shaped sealing ring (31) is set, so that the first O-shaped sealing ring and the second O-shaped sealing ring (31) can be respectively in close contact with two ends of the filter material unit (24) to seal.
4. An automatically sampling aerosol sample sampling device according to claim 3, wherein: the second air inlet pipe (202) comprises an air inlet corrugated pipe (10).
5. An automatically sampling aerosol sample sampling device according to claim 4, wherein: the air outlet pipe (3) comprises an air outlet corrugated pipe (32).
6. An automatically sampling aerosol sample sampling device according to claim 5, wherein:
the rear protective cover (17) is in a circular plate shape;
the front protective cover (18) is barrel-shaped;
and the turntable driving motor (9) is arranged in the center of the rear end surface of the rear protective cover (17).
7. An aerosol sample sampling device capable of realizing automatic sampling according to claim 1 or 2, wherein:
also comprises a control device;
the control device controls the start and stop of the turntable driving motor (9), the filter material driving motor (13), the plug driving motor (12) and the filter material recovery motor (8).
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| CN202020439733.6U CN211927422U (en) | 2020-03-31 | 2020-03-31 | Aerosol sample sampling device capable of realizing automatic sampling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023129027A1 (en) * | 2021-12-31 | 2023-07-06 | Osti̇m Tekni̇k Üni̇versi̇tesi̇ | A sampling device for biological agents |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023129027A1 (en) * | 2021-12-31 | 2023-07-06 | Osti̇m Tekni̇k Üni̇versi̇tesi̇ | A sampling device for biological agents |
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