CN108572090B - Wiping sampler - Google Patents
Wiping sampler Download PDFInfo
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- CN108572090B CN108572090B CN201710141413.5A CN201710141413A CN108572090B CN 108572090 B CN108572090 B CN 108572090B CN 201710141413 A CN201710141413 A CN 201710141413A CN 108572090 B CN108572090 B CN 108572090B
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- 238000012360 testing method Methods 0.000 claims abstract description 147
- 238000001179 sorption measurement Methods 0.000 claims abstract description 31
- 230000000670 limiting effect Effects 0.000 claims description 84
- 230000007246 mechanism Effects 0.000 claims description 57
- 230000007704 transition Effects 0.000 claims description 37
- 238000005452 bending Methods 0.000 claims description 22
- 230000009471 action Effects 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 15
- 238000005070 sampling Methods 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 14
- 238000012986 modification Methods 0.000 description 13
- 230000004048 modification Effects 0.000 description 13
- 239000010985 leather Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000001871 ion mobility spectroscopy Methods 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 150000001793 charged compounds Chemical group 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002575 chemical warfare agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000766 differential mobility spectroscopy Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a wiping sampler which comprises a shell, a wiping part, a test paper bin and a driving structure. The shell is provided with an inner cavity and a first opening for communicating the inner cavity with the outside; one end of the wiping part is rotatably arranged at the first opening, and the other end of the wiping part is positioned outside the shell; the test paper bin is arranged in the inner cavity of the shell, and the surface of the test paper bin is communicated with the surface of the wiping part; the driving structure is provided with an adsorption part used for adsorbing the test paper in the test paper bin, a moving assembly connected with the adsorption part is arranged, the moving assembly drives the adsorption part to drive the test paper to move towards or away from the wiping part, the adsorption part can drive the test paper to slide onto the surface of the wiping part, the wiping part is used for rubbing the test sample to be detected, the wiping part is rotated again to separate the test sample from the test paper, the test paper is inserted into the detection port of the detector, the hand is not contacted with the test paper in the whole sampling process, the test paper or the test sample cannot be polluted, and the detection port is also provided, so that the detection accuracy of the detector is improved, and the false alarm phenomenon of the detector is avoided.
Description
Technical Field
The invention relates to the technical field of material detection, in particular to a wiping sampler.
Background
The detection principle of the Ion Mobility Spectrometry (IMS) technology is that after the molecules of a substance to be detected are heated and gasified at a sample inlet, the molecules enter a migration tube after passing through a semipermeable membrane with a selective permeation function. The different kinds of molecules are ionized by a power supply to form molecular ion groups, and the molecular ion groups migrate to the detector at different speeds under the action of an electric field of a migration tube and finally form current pulses on the detector, so that an ion migration spectrogram with the migration time as a horizontal axis and the current intensity as a vertical axis is generated. Since the speed, mass and volume of migration are related to the charge, different substances can be distinguished by peaks at different positions on the map.
In addition to classical ion mobility technology, with the development of technology, new development directions such as high-electric-field asymmetric waveform ion mobility spectrometry (FAIMS) and the like are derived. The method has the characteristics of high detection sensitivity, quick analysis time, small volume, light weight, low power consumption and the like, can work under the condition of atmospheric pressure, is a trace detection method with the highest practicability at present based on the detection of the IMS technology, and is widely applied to the fields of drugs, explosive detection, chemical warfare agent detection, factory toxic gas monitoring and the like.
However, in the practical detection of the instrument developed based on the ion mobility spectrometry technology, a test paper needs to be wiped on a detection object, so that a sample to be detected is adsorbed on the test paper, and then the test paper is inserted into the detection instrument for detection. The existing wiping sampler on the market has the defects that the test paper and the sample on the test paper are easy to be polluted because the test paper is taken by hands in the use process, and even sweat on the hands of a person in the sampling process can cause false alarm of a detection instrument in the detection process, so that hidden danger is brought to security inspection; meanwhile, the accuracy of the detection result of the instrument is also affected after the sample is polluted.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that in the prior art, test paper or a sample is easy to be polluted in the sampling process of the sampler, so that false alarm and low detection accuracy of a detection instrument occur,
To this end, the invention provides a wiping sampler comprising
A housing having an inner cavity and a first opening communicating the inner cavity with the outside;
one end of the wiping component is rotatably arranged at the first opening, and the other end of the wiping component is positioned outside the shell;
The test paper bin is arranged in the inner cavity of the shell, and the surface of the test paper bin is communicated with the surface of the wiping part through the first opening;
The driving structure is provided with an adsorption part for adsorbing the test paper in the test paper bin and a moving assembly connected with the adsorption part, and the moving assembly drives the adsorption part to drive the test paper to move towards or away from the direction of the wiping part.
Preferably, in the wiping sampler, the driving structure further includes a gas buffer device for forming a negative pressure state in the inner cavity of the absorbing member or a normal pressure state communicating with the outside, so that the absorbing member is absorbed on the test paper or separated from the test paper;
The gas buffer device comprises an air bag arranged in the inner cavity of the shell, an air pipe connecting the air bag with the inner cavity of the adsorption piece, and a pressing piece which is arranged on the top of the air bag and can vertically move up and down, wherein the top of the pressing piece extends out of the shell.
Preferably, in the wiping sampler, a first chute is formed on the top of the housing, and the moving assembly includes a first button adapted to be embedded in the first chute, and a transition piece with two ends fixedly connected with the first button and the adsorption piece respectively;
The transition piece and the first button can slide in the inner cavity through the sliding mechanism, the sliding mechanism comprises a track plate which is fixed in the inner cavity of the shell and positioned below the transition piece, and a sliding plate which is arranged on the track plate in a sliding manner, and the transition piece and the first button are both arranged on the sliding plate.
Further preferably, in the wiping sampler, the bottom of the first button is vertically and slidably arranged on the sliding plate;
One end of the sliding plate is lapped on the track plate, two first supports are oppositely arranged at the other end of the sliding plate, the transition piece is hinged on the two first supports through a first rotating shaft, and the adsorption piece and the first button are respectively positioned on two sides of the first supports.
Preferably, in the wiping sampler, a second opening is formed in one side surface of the housing; the test paper bin comprises
The first bin body is detachably embedded into the inner cavity of the shell through the second opening by a detachable structure;
the second bin body is arranged in the inner cavity of the shell body by being arranged in the first bin body, and is provided with a surface which is inclined upwards towards the first opening direction and is communicated with the surface of the wiping part.
Further preferably, the wiping sampler further comprises a first limiting mechanism, wherein the first limiting mechanism is provided with a first state for limiting the test paper bin in the inner cavity and a second state for releasing the limit of the test paper bin; in the second state, the test paper bin is taken out of the inner cavity or is installed in the inner cavity through the second opening under the action of the detachable mechanism.
More preferably, in the wiping sampler, a third opening is formed in a side wall of the second opening of the housing;
The first limiting mechanism comprises a second button embedded in the third opening, a second limiting piece is rotatably arranged on the shell and located in the inner cavity, the second limiting piece is fixedly connected with the second button, one end of the second limiting piece is inserted into a groove formed in the side wall of the first bin body, and the second button moves in the third opening to drive the second limiting piece to rotate, so that the end of the second limiting piece is inserted into or separated from the groove.
Preferably, in the wiping sampler, the detachable structure includes at least one set of mounting seats formed on the bottom surface of the casing, one set of mounting seats includes two second supports arranged oppositely, and a notch or a through hole is formed in each second support;
The connecting shaft is formed on the side wall of the first bin body and can be inserted into a group of mounting seats or pulled out from the mounting seats through the notch or the through hole; the first elastic piece is sleeved on the connecting shaft and positioned between the two second supports; in the first state, the first elastic piece applies a pretightening force to the first bin body and back to the second opening.
Preferably, the wiping sampler further comprises a second limiting mechanism arranged in the inner cavity and positioned between the test paper bin and the wiping component, and the second limiting mechanism is used for limiting the rotation position of the wiping component to be in a horizontal position or a vertical position.
Further preferably, in the wiping sampler, an arc groove is formed on one side surface of the wiping component, and a first limit groove and a second limit groove which are concave inwards are formed in the arc groove;
The second limiting mechanism comprises a third button penetrating through the side wall of the shell, a bending piece, a second elastic piece and a second limiting mechanism, wherein one end of the third button is fixedly connected with the other end of the third button, the bending piece is suitable for being positioned in the circular arc groove, the second elastic piece is arranged on one side of the bending piece, which is opposite to the third button, and applies pretightening force towards the circular arc groove to the bending piece, and the circular arc groove is opposite to one side of the third button;
The angle of the central angle of the first limit groove and the second limit groove is 90 degrees, and when the wiping part rotates from the horizontal position to the vertical position, the other end of the bending part is correspondingly inserted into the first limit groove and the second limit groove respectively.
The technical scheme of the invention has the following advantages:
1. the invention provides a wiping sampler which comprises a shell, a wiping part, a test paper bin and a driving structure. Wherein the shell is provided with an inner cavity and a first opening for communicating the inner cavity with the outside; one end of the wiping part is rotatably arranged at the first opening, and the other end of the wiping part is positioned outside the shell; the test paper bin is arranged in the inner cavity of the shell, and the surface of the test paper bin is communicated with the surface of the wiping part through the first opening; the driving structure is arranged in the inner cavity, and is provided with an absorption part for absorbing the test paper in the test paper bin and a moving assembly connected with the absorption part, and the moving assembly drives the absorption part to drive the test paper to move towards or away from the direction of the wiping part.
According to the wiping sampler with the structure, when the test paper needs to be sampled, the adsorption piece adsorbs the test paper, the moving assembly in the driving structure is started, the moving assembly drives the adsorption piece to drive the test paper to move towards the wiping part, and as the surface of the test paper bin is communicated with the surface of the wiping part, the adsorption piece can drive the test paper to slide onto the surface of the wiping part, after the test paper is adsorbed on the wiping part, the wiping part is used for removing friction of a sample to be detected, the sample is adsorbed on the test paper, and then the wiping part is rotated, so that the wiping part is separated from the test paper; the whole moving wiping sampler inserts the test paper into the detection port of the detector, and after the test is finished, the adsorption piece cancels the adsorption action on the test paper and withdraws the test paper from the test paper bin. In the whole sampling process, hands do not contact the test paper, the test paper or the sample cannot be polluted, and the detection port of the detector is not polluted, so that the detection accuracy of the detector is improved, the false alarm phenomenon of the detector is avoided, and the whole sampling process is simplified.
2. The invention provides a wiping sampler, the driving structure also comprises a gas buffer device which is used for forming the inner cavity of the adsorption piece into a negative pressure state or a normal pressure state communicated with the outside, so that the adsorption piece is adsorbed on or separated from test paper. The inner cavity of the adsorption piece forms a negative pressure environment through the gas buffer device to adsorb the test paper, so as to drive the test paper to move; after the test sample is detected, the inner cavity of the adsorption piece is communicated with the outside, and the adsorption piece withdraws the adsorption acting force on the test paper, so that the test paper can be conveniently pulled out from the test paper bin.
3. The invention provides a wiping sampler, which also comprises a first limiting mechanism, a second limiting mechanism and a first control mechanism, wherein the first limiting mechanism is provided with a first state for limiting the test paper bin in the inner cavity and a second state for releasing the limitation of the test paper bin; in the second state, the test paper bin is taken out of the inner cavity or is installed in the inner cavity through the second opening under the action of the detachable mechanism.
According to the wiping sampler with the structure, the test paper bin is limited in the inner cavity of the shell through the cooperation of the first limiting mechanism and the detachable mechanism, or after the limit of the test paper bin is released by the first limiting mechanism, the test paper bin can be taken out of or put into the shell, so that the test paper in the test paper bin can be replaced conveniently; meanwhile, in the sampling process, the test paper bin is positioned at a fixed position in the shell under the action of the first limiting mechanism, so that the adsorption piece can conveniently drive the test paper to stably slide towards the direction of the wiping piece.
4. The invention provides a wiping sampler, which further comprises a second limiting mechanism arranged in the inner cavity and positioned between the test paper bin and the wiping component, and the second limiting mechanism is used for limiting the rotation position of the wiping component to be in a horizontal position and/or a vertical position.
According to the wiping sampler with the structure, the second limiting mechanism is arranged, so that the wiping component is ensured to be in a horizontal state in the sampling process, and test paper can conveniently slide onto the wiping component from the test paper bin and be adsorbed on the wiping component; before detecting a sample, the test paper is required to be separated from the wiping part, and the wiping part rotates downwards for 90 degrees, so that the test paper is thoroughly separated from the wiping part, and under the action of the second limiting mechanism, the wiping part is kept in the vertical direction, so that the test paper has a larger space to be inserted into the detection port.
5. According to the wiping sampler provided by the invention, the transition piece and the first button can slide in the inner cavity through the sliding mechanism; the sliding mechanism comprises a track plate fixed in the inner cavity of the shell and positioned below the transition piece, and a sliding plate arranged on the track plate in a sliding manner, wherein the transition piece and the first button are both arranged on the sliding plate. The sliding mechanism is arranged to apply an acting force to the first button so as to drive the sliding plate, the first button and the transition piece to integrally slide on the track plate, so that the absorption part is driven to drive the test paper to move towards the wiping part, and the track plate plays a role in guiding and supporting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view (left side) of a wiping sampler according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view (right side) of a wiping sampler according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of the wiping sampler of FIG. 1 with the housing removed;
FIG. 4 is a schematic view of the housing of the wiping sampler of FIG. 1;
FIG. 5 is a schematic longitudinal cross-sectional view of the wiping sampler of FIG. 1 (the wiping part not being cut away);
FIG. 6 is an enlarged view of a portion of the first stop mechanism of FIG. 5;
FIG. 7 is a schematic longitudinal cross-sectional view of the housing of the wiping sampler of FIG. 1;
FIG. 8 is a schematic view of the second spacing mechanism of the wiping device of FIG. 1 assembled with a wiping element;
FIG. 9 is a schematic perspective view of a gas buffer device of the wiping sampler of FIG. 1;
FIG. 10 is a schematic view of the cartridge of the wiper sampler of FIG. 1;
FIG. 11 is a schematic view of the explosive structure of the cartridge of FIG. 10;
FIG. 12 is a schematic view of the first cartridge body of the cartridge of FIG. 10 (in the opposite direction to FIG. 11);
FIG. 13 is a schematic view of the assembly of the slide plate, transition piece, suction member, and gas cushioning device of FIG. 1;
FIG. 14 is a schematic view of the skateboard of FIG. 13;
Reference numerals illustrate:
1-a housing; 11-a first opening; 12-a second opening; 13-a third opening; 14-a first chute; 15-a guide groove; 16-limit grooves; 17-a support plate; 171-long waist hole; 172-a second spindle;
2-a wiping part; 21-arc grooves; 211-a first limit groove; 212-a second limit groove;
3-a test paper bin; 31-a second bin; 32-a first bin; 321-grooves; 33-a third elastic member;
4-driving structure; 41-an absorbent member; 421-first button; 422-transition piece; 4221-extension;
51-an air bag; 52-trachea; 53-pressing piece;
61-sliding plate; 611-a first support; 612—a first spindle; 613-torsion springs; 614-second chute; 62-track plate;
7-a first limiting mechanism; 71-a second button; 72-a second limiting piece; 721-fixed shaft; 73-a spring;
81-a second support; 82-a first elastic member; 83-connecting shaft;
9-a second limiting mechanism; 91-third button; 92-bending piece; 93-a second elastic member;
10-transition plate.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The present embodiment provides a wiping sampler, as shown in fig. 1 to 14, including a housing 1, a wiping member 2, a test strip cartridge 3, and a driving structure 4.
As shown in fig. 1,2 and 4, the housing 1 has an inner cavity, and a first opening 11 that communicates the inner cavity with the outside, one end of the wiping member 2 is rotatably provided at the first opening 11, and the other end is located outside the housing 1; the test paper bin 3 is arranged in the inner cavity of the shell 1, and the surface of the test paper bin is communicated with the surface of the wiping part 2 through the first opening 11; as shown in fig. 3, a transition plate 10 is further provided between the test strip magazine 3 and the wiping member 2, and communication between the surface of the test strip magazine 3 and the top surface of the wiping member 2 is made by the transition plate 10.
The drive structure 4 is disposed in the interior cavity and includes an absorbent member 41, a moving assembly, a sliding mechanism, and a gas cushion. Wherein, the top of the housing 1 is provided with a first chute 14, and the moving assembly comprises a first button 421 suitable for being embedded in the first chute 14, and a transition piece 422 with two ends fixedly connected with the first button 421 and the adsorbing piece 41 respectively. As shown in fig. 13, the transition piece 422 is a plate, the plate includes a first inclined plate, two ends of the first plate are respectively fixed with a first horizontal plate and a second horizontal plate, the first button 421 is fixed on the first horizontal plate, and the transition piece 422 is fixed on the second horizontal plate.
As shown in fig. 5, the sliding mechanism includes a rail plate 62 fixed in the inner cavity of the housing 1 below the transition piece 422, and a slide plate 61 slidably provided on the rail plate 62, both the transition piece 422 and the first button 421 being provided on the slide plate 61. As shown in fig. 13, the sliding plate 61 is provided with a first clamping hole, and the bottom of the first button 421 is provided with a first protrusion, such as two first protrusions, which are suitable for being inserted into the first clamping hole, and the first protrusion of the first button 421 moves up and down in the first clamping hole, so that the first button 421 is slidably disposed on the sliding plate 61 in a vertical direction.
As shown in fig. 5 and 13, one end of the sliding plate 61 is lapped on the track plate 62, the other end is provided with two first supports 611 which are oppositely arranged, and a gap is formed on the sliding plate 61 between the two first supports 611; the transition piece 422 is hinged to two first supports 611 by means of a first shaft 612, the suction piece 41 and the first push button 421 being located on either side of the first supports 611. For example, the two side walls of the transition piece 422 are provided with extending portions 4221 extending downward, the two extending portions 4221 are sleeved on the first rotating shaft 612, the first rotating shaft 612 is inserted into the openings on the two first supports 611, and the extending portions 4221 are preferably formed on the two side walls of the first plate.
Because the absorbing member 41 and the first button 421 are respectively located at two sides of the first support 611, and the first rotation shaft 612 is used as a rotation pivot, when the first button 421 is pressed down, the first protrusion of the first button 421 moves down in the first clamping hole, and then the other end of the transition piece 422 drives the absorbing member 41 to tilt up, so that the absorbing member 41 is far away from the test paper; when the downward pressing force is reversely removed, the adsorbing member 41 rotates downward to adsorb on the test paper, and the adsorbing member 41 is driven to drive the test paper to move toward the wiping member 2.
As shown in fig. 13, a torsion spring 613 is further sleeved on the first rotating shaft 612 between the two first supports 611, and one end of the torsion spring 613 is connected to one end of the transition piece 422 near the first button 421, the other end of the torsion spring 613 is fixed on the sliding plate 61, and two ends of the torsion spring 613 are located on the same side of the first supports 611. When the first button 421 is pressed downward, the adsorption member 41 on the other end of the transition piece 422 is more easily tilted by the torsion force of the torsion spring 613; conversely, when the downward pressing force is removed, the adsorbing member 41 on the other end of the transition piece 422 is more easily restored, rotated downward and adsorbed on the test paper under the restoring force of the torsion spring 613.
In order to facilitate sliding of the sliding plate 61 in the inner cavity of the housing 1, as shown in fig. 7, guide grooves 15 suitable for insertion of the edge of the sliding plate 61 are formed on the inner wall surfaces of both sides of the housing 1. Meanwhile, the device further comprises a first limiting piece for limiting the height position of the first button 421 in the vertical ascending motion, for example, a limiting groove 16 which is arranged on the inner wall surfaces of two sides of the shell 1 and is higher than the guide groove 15, an opening of the limiting groove 16 faces downwards, flanges extending outwards are arranged on two side walls of the first button 421, and the flanges slide into the limiting groove 16 through the bottom of the limiting groove and are limited by the top of the limiting groove 16. When the absorbent member 41 needs to be moved, the first button 421 is pressed downwards, so that the flange of the first button 421 slides out of the limit groove 16, and then the first button 421 is driven to slide in the first slide groove 14, so that the slide plate 61 slides on the track plate 62 and the guide groove 15, the slide plate 61 is ensured to do linear motion in the inner cavity, the absorbent member 41 is driven to do linear motion towards the wiping member 2, and the test paper is directly opposite to and covered on the surface of the wiping member 2. For example, the above-described limit grooves 16 are provided on the inner wall surface of the housing 1 corresponding to both ends in the longitudinal direction of the first slide groove 14, and the slide plate 61 is limited in the sliding range in the horizontal direction by providing two limit grooves 16 on the same side inner wall surface of the housing 1.
The gas buffer device is used for forming the inner cavity of the adsorption piece 41 into a negative pressure state or a normal pressure state communicated with the outside, so that the adsorption piece 41 is adsorbed on or separated from the test paper. As shown in fig. 9, the gas buffering device includes an air bag 51 provided in an inner cavity of the housing 1, an air pipe 52 connecting the air bag 51 with the inner cavity of the adsorbing member 41, and a pressing member 53 provided on a top of the air bag 51 and vertically movable up and down, a top of the pressing member 53 protruding outside the housing 1. Preferably, the pressing member 53 includes a base, a column mounted on the base, and a top of the column extends out of the housing 1, and in order to prevent the column from sliding out of the housing 1, a horizontal baffle is provided on a side wall of the housing 1, the horizontal baffle being capable of abutting against a top inner wall surface of the housing 1.
In addition, the track plate 62 and the sliding plate 61 are both provided with a second sliding groove 614 along the length direction of the casing 1, and the second sliding groove 614 is provided with a cylinder for facilitating the pressing piece 53 to extend out of the casing 1 through the second sliding groove 614. During the sliding of the slide plate 61, the airbag 51 and the pressing member 53 do not move in the horizontal direction.
The absorption part 41 is a leather cup, and one end of the air pipe 52 is in sealing connection with the leather cup. Or the suction piece 41 is a sucker, a connecting column is formed at the top of the sucker, and one end of the air pipe 52 is inserted into the connecting column in a sealing way. The connecting column is inserted on the third plate of the transition piece 422, and the air in the air bag 51 is discharged through the air pipe 52 and the sucker by downwards pressing the pressing piece 53, so that a negative pressure environment is formed in the sucker, and the sucking action of the sucker on the test paper is realized.
As shown in fig. 10, 11 and 12, the test paper bin 3 includes a second bin body 31 and a first bin body 32, where the second bin body 31 is disposed in the first bin body 32, and has a surface inclined upward toward the first opening 11, and the test paper is placed on the surface, and the surface is communicated with the surface of the wiping member 2; the first cartridge 32 is detachably inserted into the inner cavity of the housing 1 through the second opening 12 by a detachable structure.
The second clamping hole is formed in the first bin body 32, the second bulge is formed in the bottom of the second bin body 31 and clamped into the second clamping hole to form a clamping connection, the second bin body 31 is connected with the first bin body 32, a third elastic piece 33, such as a spring, is further arranged between the second bin body 31 and the first bin body 32 for adjusting the position of the second bin body 31 above the first bin body 32, two hollow mounting columns are formed on the bottom surface of the first bin body 32, the bottom of the spring is inserted into an inner cavity of the mounting column, the top of the spring abuts against the bottom surface of the second bin body 31, after the test paper positioned at the uppermost position in the test paper bin 3 is removed, the second bin body 31 moves upwards under the acting force of the spring, the test paper positioned at the upper position in the second bin body 31 is positioned at the height of the test paper positioned at the upper position, and the adsorption piece 41 can be adsorbed on the test paper without adjusting the height of the adsorption piece 41. The top surface of the second housing 31 is slightly higher than the top surface of the first housing 32.
The wiping sampler further comprises a first limiting mechanism 7, wherein the first limiting mechanism is provided with a first state for limiting the test paper bin 3 in the inner cavity and a second state for releasing the limitation of the test paper bin 3; in the second state, the test strip magazine 3 is removed from the interior cavity or mounted therein via the second opening 12 under the influence of the detachable mechanism.
The side wall of the second opening 12 of the casing 1 is provided with a third opening 13, as shown in fig. 6, the first limiting mechanism 7 comprises a second button 71 embedded in the third opening 13, a second limiting member 72 rotatably arranged on the casing 1 and positioned in the inner cavity, the second limiting member 72 is fixedly connected with the second button 71, one end of the second limiting member 72 is inserted into a groove 321 formed in the side wall of the first bin 32, and the second button 71 moves in the third opening 13 to drive the second limiting member 72 to rotate, so that the end of the second limiting member 72 is inserted into or separated from the groove 321, and the limiting function of limiting the test paper bin 3 in the inner cavity of the casing 1 or releasing the limiting function of the test paper bin 3 is realized.
As shown in fig. 6, an L-shaped support plate 17 is formed on the inner side wall surface of the housing 1, the support plate 17 is positioned between the test paper bin 3 and the air bag 51, the slide plate 61 is positioned on the top of the vertical part of the support plate 17, and a long waist hole 171 extending along the width direction of the housing 1 is formed on the vertical part of the support plate 17; the second stopper 72 includes a T-shaped second plate, and a fixed shaft 721 formed on a horizontal portion of the second plate, the fixed shaft 721 and a vertical portion of the second plate being located at both sides of the horizontal portion of the second plate, respectively. One end of the horizontal part of the second plate is fixed on the second button 71 along the width direction of the shell 1, and the other end is sleeved on a second rotating shaft 172 fixed on the horizontal part of the supporting plate 17, and the second rotating shaft 172 is taken as a rotating center; along the length direction of the shell 1, the end part of the vertical part of the second plate is inserted into the groove 321 on the side wall of the first bin body 32, the end part of the fixed shaft 721 extends into the long waist hole 171, the fixed shaft 721 is sleeved with the spring 73, and two ends of the spring 73 respectively lean against the inner wall surface of the vertical part of the supporting plate 17 and the second plate.
When the second button 71 is moved on the third opening 13, the second limiting member 72 integrally rotates in the housing 1 with the second rotation shaft 172 as a rotation center, so that the fixed shaft 721 swings in the long waist hole 171, the vertical portion of the second plate is separated from or inserted into the groove 321 of the first bin 32, and when no force is applied to the second button 71, the vertical portion of the second plate is inserted into the groove 321 of the first bin 32 under the restoring force of the spring sleeved on the fixed shaft 721.
As shown in fig. 7 and 12, the detachable structure comprises two groups of mounting seats formed on the bottom surface of the shell 1, one group of mounting seats comprises two second supports 81 which are oppositely arranged, and the second supports 81 are provided with notches or through holes; the two connecting shafts 83 formed on the side wall of the first bin 32, wherein the two connecting shafts 83 can be respectively inserted into a group of mounting seats through the openings or the through holes or can be pulled out from the mounting seats; and a first elastic member 82, such as a spring, sleeved on the connection shaft 83 and located between the two second supports 81; in the first state, the first elastic member 82 applies a preload force to the first cartridge body 32 against the second opening 12.
When the first limiting mechanism 7 releases the limitation of the first bin body 32, the first elastic piece 82 releases the pretightening force, the connecting shaft 83 and the first elastic piece 82 are driven to integrally pop up from the second support 81, the first bin body 32 and the second bin body 31 are driven to integrally pop up from the second opening 12, and the disassembly process of the test paper bin 3 is realized; when the test paper bin 3 needs to be installed, under the external action, the test paper bin 3 is pushed into the inner cavity from the second opening 12, the connecting shaft 83 and the first elastic piece 82 are correspondingly inserted into a group of installation seats one by one, no acting force is applied to the second button 71 at the moment, under the action of the spring sleeved on the fixed shaft 721, the second limiting piece 72 rotates towards the groove 321 on the side wall of the first bin body 32, and one end of the second limiting piece 72 is inserted into the groove 321 to limit the position of the test paper bin 3 in the inner cavity; the first elastic member 82 in the first cartridge body 32 is now in a compressed state.
In addition, in the preferred set of mounting seats, the second support 81 far from the second opening 12 is provided with a notch or a through hole, only the connecting shaft 83 is allowed to pass through, the first elastic member 82 cannot pass through, but the notch or the through hole near the second support 81 at the second opening 12 is provided with a notch or a through hole, and both the connecting shaft 83 and the first elastic member 82 can slide in or slide out, so that the connecting shaft 83 and the first elastic member 82 can be conveniently installed or taken out. The connecting shaft 83 is further formed with an annular baffle, and when the first elastic member 82 is sleeved on the connecting shaft 83 and installed on the installation seat, two ends of the first elastic member 82 respectively abut against the annular baffle and the inner surface of the second support 81 far from the second opening 12.
The wiping sampler further comprises a second limiting mechanism 9 arranged in the inner cavity and positioned between the test paper bin 3 and the wiping part 2, and the second limiting mechanism is used for limiting the rotation position of the wiping part 2 to be in a horizontal position or a vertical position.
As shown in fig. 8, an arc groove 21 is formed on one side surface of the wiping part 2, and a first limit groove 211 and a second limit groove 212 which are recessed inwards are formed in the arc groove 21; preferably, the first limiting groove 211 and the second limiting groove 212 are respectively positioned at two ends of the circular arc groove 21, and the central angle of the circular arc groove 21 is 90 degrees; the second limiting mechanism 9 comprises a third button 91 penetrating through the side wall of the shell 1, a bending piece 92 with one end fixedly connected with the third button 91 and the other end suitable for being positioned in the circular arc groove 21, and a second elastic piece 93 arranged on one side of the bending piece 92 opposite to the third button 91, wherein the second elastic piece 93 applies pretightening force to the bending piece 92 towards the circular arc groove 21, and the circular arc groove 21 is opposite to the third button 91; when the wiping member 2 is rotated from the horizontal position to the vertical position, the other ends of the corresponding bent pieces 92 are inserted into the first and second limiting grooves 211 and 212, respectively.
In the sampling process, under the pretightening force of the second elastic piece 93, the other end of the bending piece 92 is inserted into the first limit groove 211 to limit the wiping part 2 in a horizontal state, so that the test paper can conveniently move from the test paper bin 3 to the wiping part 2, and the test paper can conveniently have larger supporting force when the test paper to be detected is rubbed by the wiping part 2 later; after the sample is taken, when the wiping part 2 needs to be rotated downwards by 90 degrees, the third button 91 is pressed towards the inside of the shell 1, after the pressing force is larger than the pretightening force of the second elastic piece 93, the whole bending piece 92 moves towards the direction opposite to the circular arc groove 21, so that the other end of the bending piece 92 is separated from the first limiting groove 211 and is positioned at other positions of the circular arc groove 21, the limiting action on the wiping part 2 is relieved, the circular arc groove 21 continuously rotates relative to the other end of the bending piece 92 in the downward rotation process of the wiping part 2, when the wiping part 2 rotates to the vertical direction, the other end of the bending piece 92 is just positioned in the second limiting groove 212, the pressure on the third button 91 is released, and under the resetting action of the second elastic piece 93, the other end of the bending piece 92 is limited in the second limiting groove 212, and the wiping part 2 is limited in the vertical direction; conversely, the restriction of the other end of the doubler 92 can be released, so that the wiping part 2 is rotated from the vertical position to the horizontal position, and the sampling process of the next round is started.
The bending member 92 is preferably a U-shaped shaft, one end of the shaft is fixed on the third button 91, the other end of the shaft is located in the circular arc groove 21, two side walls of the U-shaped shaft are different in length, one long side wall is connected with the third button 91, the end of one short side wall is located in the circular arc groove 21, the shaft is arranged on the outer surface of the bottom of the U-shaped shaft, which is opposite to the opening side, and the second elastic member is sleeved on the shaft.
In addition, a transition plate 10 is further provided between the first cartridge body 32 and the wiping member 2, a partition plate is formed on the housing 1, and the transition plate 10 is mounted on the partition plate such that the top surface of the second cartridge body 31 communicates with the surface of the wiping member 2 through the transition plate 10.
The wiping part 2 comprises an arc-shaped plate bent downwards from the first opening 11, and a base formed on the bottom of the arc-shaped plate, one end of the base extends out of the arc-shaped plate, the extending end is connected to two side walls of the first opening 11 of the shell 1, and the arc-shaped groove 21 is also formed on the surface of one side of the base facing away from the third button 91. The transition plate 10 is located just above the turn 92.
When sampling is needed, the wiping sampler in the embodiment firstly puts test paper into a first bin in the test paper bin 3, firstly installs the whole test paper bin 3 in a first inner cavity through a second opening 12 on the shell 1, and then locks in the inner cavity of the shell 1 under the action of a first limiting mechanism 7; pressing the first button 421 downward so that the first button 421 is disengaged from the limitation of the limit groove on the housing 1; the downward pressing piece 53 is arranged, and the gas in the air bag 51 is discharged through the gas pipe 52 and the leather cup, so that the inner cavity of the leather cup is in a negative pressure environment and is adsorbed on the test paper in the second bin body 31; the first button 421 is driven to slide in the first sliding groove 14 so as to drive the sliding plate 61, the transition piece 422 and the leather cup to slide on the track plate 62, the leather cup adsorbs the test paper to move towards the wiping part 2, the test paper continuously moves forwards and passes through one end of the transition plate 10 to the arc surface of the wiping part 2, and after the arc surface is covered; the whole wiping part 2 is used for wiping the sample to be detected, so that the sample is adsorbed on the test paper; pressing the third button 91 into the housing 1, releasing the restriction of the bending piece 92 on the wiping part 2, rotating the wiping part 2 downwards to enable the wiping part 2 to be positioned in the vertical direction, loosening the third button 91, and inserting the other end of the bending piece 92 into the second limiting groove 212 under the action of the reset force of the second elastic piece 93; and then the whole wiping sampler stretches the test paper into the detection port, after the detection is finished, the pressing piece 53 is not pressed downwards, the air in the air bag 51 is continuously sucked inwards, so that the air in the air bag 51 is communicated with the outside, the adsorption effect on the test paper is canceled, the test paper is directly pumped away from the test paper bin 3, in the whole sampling process, hands do not contact the test paper, the test paper or the test sample cannot be polluted, and the detection port of the detector is further improved, the false alarm phenomenon of the detector is avoided, and meanwhile, the whole sampling process is simplified.
As an alternative embodiment, the second limiting means 9 may also be of other construction, only with the aim of limiting the rotational position of the wiping element 2 in a horizontal or vertical position. For example, two first locking plates are arranged on one side of the wiping part 2 close to the first opening 11, one is horizontally arranged, one is vertically arranged, and correspondingly, a second locking plate is arranged in the inner cavity of the shell 1, and when the wiping part 2 rotates to a horizontal position, the horizontally arranged first locking plates and the second locking plates are locked through locks; when the wiping part 2 is turned to the vertical position, the first lock plate and the second lock plate, which are vertically arranged, are locked by the lock. As a further modification, the second stopper mechanism 9 described above may not be provided.
As a modification of the detachable mechanism, the above-described mount may also be one set, three sets, four sets, five sets, or the like. The detachable mechanism may also be other structures that exist, such as a snap-fit structure.
As a deformation of the first stop mechanism 7, the first stop mechanism 7 may also have other structures, for example, a telescopic cylinder disposed in the inner cavity, a stop shaft disposed on a telescopic shaft of the cylinder, and one end of the stop shaft far away from the telescopic shaft inserted into a groove 321 on a side wall of the first bin 32, and implement, through telescopic movement of the cylinder, stop the position of the first bin 32, or release the stop effect on the first bin 32.
As a modification of the test strip cartridge 3, the test strip cartridge 3 may further include only the second cartridge body 31, the second cartridge body 31 having the above-described inclined surface. Or other structure, it is only necessary to have an inclined surface for the test paper to slide toward the wiping member 2.
As a modification, the torsion spring 613 may not be provided around the first rotation shaft 612. As a modification of the sliding mechanism, the sliding mechanism may be a conventional rail structure, and the sliding plate 61 is only required to slide on the rail to drive the absorbent member 41 to drive the test paper to slide toward the wiping member 2. As a modification, the transition piece 422 may be directly driven to move only by driving the first button 421 without providing the above-described sliding mechanism. As a modification of the moving component, the moving component may be an air cylinder, and the telescopic shaft of the air cylinder is directly fixed on the transition piece 422 or directly fixed on the absorbing piece 41, so that the absorbing piece 41 is driven to drive the test paper to move towards or away from the wiping component 2 only.
As a modification of the adsorbing member 41, the adsorbing member 41 may be an air tap.
As a modification of the gas buffer device, the gas buffer device may be an existing vacuum pumping device, and only needs to be connected with the inner cavity of the adsorbing member 41 through the air pipe 52 to pump the inner cavity of the adsorbing member 41 into a required negative pressure environment. Such as a vacuum pump.
As a modification, the above-mentioned gas buffer may not be provided, and the adsorbing member 41 may be a conventional suction nozzle, for example, a suction cup on a hook, and may be a suction cup capable of adsorbing the test paper in the test paper bin 3.
As a modification, the wiping sampler described above need only include the housing 1, the wiping member 2, the test strip magazine 3, and the drive structure 4.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A wiping sampler, comprising
A housing (1) having an inner cavity and a first opening (11) communicating the inner cavity with the outside;
a wiping member (2) having one end rotatably provided at the first opening (11) and the other end located outside the housing (1);
The test paper bin (3) is arranged in the inner cavity of the shell (1), and the surface of the test paper bin is communicated with the surface of the wiping part (2) through the first opening (11);
The driving structure (4) is provided with an absorption part (41) for absorbing the test paper in the test paper bin (3), and a moving assembly connected with the absorption part (41), wherein the moving assembly drives the absorption part (41) to drive the test paper to move towards or away from the wiping part (2).
2. The wiping sampler according to claim 1, characterized in that the driving structure (4) further comprises a gas buffer device for forming the inner cavity of the adsorbing member (41) into a negative pressure state or into a normal pressure state communicating with the outside, so that the adsorbing member (41) is adsorbed on or separated from the test paper;
The gas buffer device comprises an air bag (51) arranged in the inner cavity of the shell (1), an air pipe (52) for connecting the air bag (51) with the inner cavity of the adsorption piece (41), and a pressing piece (53) which is arranged on the top of the air bag (51) and can vertically move up and down, wherein the top of the pressing piece (53) extends out of the shell (1).
3. A wipe sampler according to claim 1 or 2, characterized in that: a first sliding groove (14) is formed in the top of the shell (1), and the moving assembly comprises a first button (421) which is suitable for being embedded in the first sliding groove (14), and a transition piece (422) of which the two ends are fixedly connected with the first button (421) and the adsorption piece (41) respectively;
The transition piece (422) and the first button (421) are slidably arranged in the inner cavity through a sliding mechanism, the sliding mechanism comprises a track plate (62) which is fixed in the inner cavity of the shell (1) and is positioned below the transition piece (422), and a sliding plate (61) which is slidably arranged on the track plate (62), and the transition piece (422) and the first button (421) are both arranged on the sliding plate (61).
4. A wipe sampler according to claim 3, characterized in that: the bottom of the first button (421) is arranged on the sliding plate (61) in a vertically sliding way;
One end of the sliding plate (61) is lapped on the track plate (62), two first supports (611) which are oppositely arranged are arranged at the other end of the sliding plate, the transition piece (422) is hinged on the two first supports (611) through a first rotating shaft (612), and the adsorption piece (41) and the first button (421) are respectively positioned at two sides of the first supports (611).
5. The wipe sampler of any one of claims 1-4, wherein: a second opening (12) is formed in one side surface of the shell (1); the test paper bin (3) comprises
The first bin body (32) is detachably embedded and arranged in the inner cavity of the shell (1) through the second opening (12) by a detachable structure;
The second bin (31) is arranged in the inner cavity of the shell (1) by being arranged in the first bin (32), and is provided with a surface which is inclined upwards towards the direction of the first opening (11) and is communicated with the surface of the wiping part (2).
6. A wipe sampler according to claim 5, characterized in that: the device also comprises a first limiting mechanism (7) which is provided with a first state for limiting the test paper bin (3) in the inner cavity and a second state for releasing the limit of the test paper bin (3); in the second state, the test paper bin (3) is taken out of the inner cavity or is installed in the inner cavity through the second opening (12) under the action of the detachable structure.
7. The wipe sampler of claim 6, wherein: a third opening (13) is formed in the side wall of the second opening (12) of the shell (1);
The first limiting mechanism (7) comprises a second button (71) embedded in the third opening (13), a second limiting piece (72) rotatably arranged on the shell (1) and located in the inner cavity, the second limiting piece (72) is fixedly connected with the second button (71), one end of the second limiting piece is inserted into a groove (321) formed in the side wall of the first bin body (32), and the second button (71) moves in the third opening (13) to drive the second limiting piece (72) to rotate, so that the end of the second limiting piece (72) is inserted into or separated from the groove (321).
8. The wipe sampler of claim 6 or 7, wherein: the detachable structure comprises at least one group of mounting seats formed on the bottom surface of the shell (1), one group of mounting seats comprises two second supports (81) which are oppositely arranged, and a notch or a through hole is formed in each second support (81);
The connecting shafts (83) are formed on the side wall of the first bin body (32), and the connecting shafts (83) can be inserted into a group of mounting seats or pulled out from the mounting seats through the openings or the through holes; and a first elastic member (82) sleeved on the connecting shaft (83) and positioned between the two second supports (81); in the first state, the first elastic piece (82) applies a pretightening force to the first bin body (32) and back to the second opening (12).
9. A wipe sampler according to any one of claims 1-8, characterized in that: the test paper machine also comprises a second limiting mechanism (9) which is arranged in the inner cavity and is positioned between the test paper bin (3) and the wiping part (2) and is used for limiting the rotation position of the wiping part (2) to be in a horizontal position or a vertical position.
10. A wipe sampler according to claim 9, characterized in that: an arc groove (21) is formed in one side surface of the wiping part (2), and a first limiting groove (211) and a second limiting groove (212) which are recessed inwards are formed in the arc groove (21);
The second limiting mechanism (9) comprises a third button (91) penetrating through the side wall of the shell (1), one end of the second limiting mechanism is fixedly connected with the third button (91), the other end of the second limiting mechanism is suitable for a bending piece (92) positioned in the circular arc groove (21), and a second elastic piece (93) arranged on one side, opposite to the third button (91), of the bending piece (92), the second elastic piece (93) applies pretightening force to the bending piece (92) towards the circular arc groove (21), and the circular arc groove (21) is opposite to one side of the third button (91);
the angle of the central angle of the first limit groove (211) and the second limit groove (212) is 90 degrees, and when the wiping part (2) rotates from the horizontal position to the vertical position, the other end of the bending part (92) is correspondingly inserted into the first limit groove (211) and the second limit groove (212) respectively.
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| CN201710141413.5A CN108572090B (en) | 2017-03-10 | 2017-03-10 | Wiping sampler |
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| CN201710141413.5A CN108572090B (en) | 2017-03-10 | 2017-03-10 | Wiping sampler |
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| CN108572090B true CN108572090B (en) | 2024-06-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109596390B (en) * | 2018-12-25 | 2024-10-15 | 苏州微木智能系统有限公司 | Continuous wiping sampling device and sample supply system for conveying gas |
| CN109669042B (en) * | 2019-03-01 | 2022-01-28 | 青岛大学附属医院 | Division of endocrinology is with diabetes quick detection device |
| CN112414744B (en) * | 2019-08-21 | 2024-09-06 | 天津大学 | Drawer type pipeline sediment uphole sampler and sampling method thereof |
| CN112051087B (en) * | 2020-08-27 | 2024-05-28 | 上海灿兰环境科技有限公司 | Soil detection device and detection method |
| CN113324787B (en) * | 2021-05-31 | 2023-05-02 | 常州工程职业技术学院 | Sampling device for residual dirt on surface of strip steel |
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