CN116445267B - Air microorganism sampling device - Google Patents
Air microorganism sampling device Download PDFInfo
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- CN116445267B CN116445267B CN202310699034.3A CN202310699034A CN116445267B CN 116445267 B CN116445267 B CN 116445267B CN 202310699034 A CN202310699034 A CN 202310699034A CN 116445267 B CN116445267 B CN 116445267B
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- 238000005070 sampling Methods 0.000 title claims abstract description 219
- 244000005700 microbiome Species 0.000 title claims abstract description 33
- 210000001503 joint Anatomy 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 244000000010 microbial pathogen Species 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/24—Methods of sampling, or inoculating or spreading a sample; Methods of physically isolating an intact microorganisms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses an air microorganism sampling device, which relates to the technical field of microorganism sampling and comprises a sampling tube, a clamping groove, a sampling pump, a sampling head, a driving device and a control system, wherein the sampling tube is detachably arranged in the clamping groove, the sampling tube is a disposable sampling tube, the side surface of the sampling tube is provided with an air inlet and an air outlet, the sampling head is provided with an air inlet channel, one end of the air inlet channel is communicated with the sampling pump, the other end of the air inlet channel can be butted on the air inlet, the driving device can drive the sampling head to move towards the sampling tube and enable the air inlet channel to be butted on the air inlet, and after the sampling is finished, the driving device and the sampling pump can also be driven to move towards the direction far away from the sampling tube. The scheme provided by the invention can reduce the manual participation degree, improve the automation degree and make contribution to realizing full-automatic sampling.
Description
Technical Field
The invention relates to the technical field of microorganism sampling, in particular to an air microorganism sampling device.
Background
Microorganisms in human and animal bodies and soil can be dispersed in the air by droplets, dust, or the like, so that the air contains a certain kind and amount of microorganisms. In general, there is no pathogenic microorganism in the air, but in the air around hospitals, veterinary hospitals and livestock and poultry houses, aerosol of pathogenic microorganisms is often suspended, and healthy people or animals are often infected by inhalation. Air contaminated with pathogenic microorganisms can often become a source or medium of contamination, causing the epidemic of infection. Therefore, the detection of airborne microorganisms is of great importance for the prevention and control of infectious diseases and the supervision and protection of environmental hygiene.
The air sampler is an important tool in the air microorganism detection process, and has various types, wherein the impact air sampler collects microorganism particles in the air in sampling liquid by utilizing an air jet mode. In the sampling process, after sampling liquid is added into the sampler, air suction power is started, air enters from an air inlet of the sampler, and microorganism particles in the air impact the sampling liquid of the sampler, so that the microorganism particles are captured due to the adhesiveness of the liquid.
However, the existing air sampler requires high manual participation and has low automation degree.
Disclosure of Invention
The invention aims to provide an air microorganism sampling device, which solves the problems of the prior art, reduces the manual participation degree, improves the automation degree and contributes to realizing full-automatic sampling.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an air microorganism sampling device which comprises a sampling tube, a clamping groove, a sampling pump, a sampling head, a driving device and a control system, wherein the sampling tube is detachably arranged in the clamping groove, the sampling tube is a disposable sampling tube, an air inlet and an air outlet are formed in the side face of the sampling tube, the sampling head is provided with an air inlet channel, one end of the air inlet channel is communicated with the sampling pump, the other end of the air inlet channel can be butted with the air inlet, the driving device can drive the sampling head to move towards the sampling tube and enable the air inlet channel to be butted with the air inlet, the driving device and the sampling pump can also be driven to move towards a direction far away from the sampling tube after sampling is finished, and the control system controls the driving device and the sampling pump to work.
Preferably, in a normal state, the clamping groove is in a vertical state, and an outlet of the clamping groove is arranged at the top of the clamping groove; after the sampling tube is used, the driving device can drive the sampling tube to move upwards in the clamping groove to the outlet to finish disassembly;
the sampling tube can move downwards to completely enter the clamping groove under the action of self gravity after being placed in the clamping groove from the outlet, and the installation is completed.
Preferably, the driving device comprises a motor and a driving belt group, at least part of the driving belt group is arranged on one side of the clamping groove along the height direction of the clamping groove, the motor drives a driving wheel in the driving belt group to rotate and drive the driving belt to rotate, a sliding block is arranged on the driving belt, a drag hook is arranged on the sliding block, a hook groove matched with the drag hook is arranged at the bottom of the sampling pipe, the sliding block moves towards the outlet of the clamping groove, and the drag hook is hooked in the hook groove to drive the sampling pipe to move towards the outlet.
Preferably, a pressing rod is arranged at the opening of the clamping groove, the pressing rod is pressed at the top of the sampling tube in the clamping groove in a normal state, a side plate is arranged at one side of the clamping groove, the top end of the side plate is fixedly connected with the pressing rod, one side of the side plate is hinged to a first supporting structure, the edge of the other side is a movable edge, the movable edge is opposite to a fixed edge on the clamping groove, the fixed edge extends along the length direction of the clamping groove, the bottom of the movable edge extends away from the fixed edge and forms an inclined guide edge, a driving rotating wheel is further arranged on the sliding block, and in a normal state, the driving rotating wheel is positioned at the lower part of the movable edge and the lower part of the fixed edge, and the sliding block can drive the driving rotating wheel to move between the movable edge and the fixed edge along the guide edge and can drive the pressing rod to move away from the top of the sampling tube along the direction of the movable edge along the direction away from the fixed edge.
Preferably, a sliding rail extending along the length direction of the clamping groove is further arranged on one side of the clamping groove, and the sliding block or the drag hook is connected to the sliding rail in a sliding manner.
Preferably, the automatic return device further comprises an automatic return assembly, wherein the automatic return assembly is provided with the following two forms;
the first type, the automatic return component comprises a torsion spring, the torsion spring is arranged at the hinge joint of the side plate and the first supporting structure, the elasticity of the torsion spring can be overcome when the side plate rotates in the direction away from the clamping groove, and when the driving rotating wheel is driven by the sliding block to move out from between the movable edge and the fixed edge, the torsion spring gives the side plate automatic return power;
second, self return subassembly includes first magnet, first magnet set up in on the curb plate, set up the material of draw-in groove can attract first magnet or be in the surface setting of draw-in groove can attract the subassembly of first magnet.
Preferably, the device further comprises a turntable, a rocker and a push rod, wherein the turntable can rotate under the drive of the motor, the motor respectively transmits torque to the turntable and the driving wheel through two gear transmission systems, the two gear transmission systems are respectively provided with a clutch, the turntable is provided with a push piece, the push piece deviates from the center of the turntable, one end of the rocker is rotatably arranged on a second supporting structure, the other end of the rocker is positioned on one side of the push piece, the push rod is positioned on one side of the rocker deviating from the push piece, the push rod is slidably arranged on a third supporting structure along the direction away from and close to the sampling tube, the sampling head is fixedly arranged on the push rod, the motor drives the push piece to rotate when driving the turntable to rotate, the push piece pushes the rocker to rotate towards the push rod, the rocker pushes the push rod to move, and the push rod pushes the sampling head to move towards the sampling tube and realize butt joint;
the sampling device comprises a sampling head, a third supporting structure, a motor, a tension spring, a turntable and a pushing piece, wherein the tension spring is connected to the sampling head and the third supporting structure respectively, in a natural state at two ends of the tension spring under a normal state, when the sampling head moves towards the sampling tube and is in butt joint, the tension spring is in a stretching state and gives an elastic force for restoring the sampling head to the original position, after sampling is completed, the motor rotates in the opposite direction to drive the turntable and the pushing piece to sequentially act, and the sampling head is subjected to the elastic force of the tension spring and drives the pushing piece to be far away from the sampling tube.
Preferably, the rotary table is in transmission connection with the motor through a rotary shaft, and a shaft sleeve is fixedly sleeved on the rotary shaft; a locating pin is fixedly arranged on one side of the shaft sleeve or one side of the turntable, and a limit column is fixedly arranged on the fourth supporting structure;
after the motor drives the turntable to rotate by a set angle, the locating pin can prop against the limiting column, and at the moment, the pushing piece rotates to exceed the center line of the push rod so as to realize that the resilience force of the tension spring is finally transferred to the limiting column.
Preferably, the pushing piece is of a roller structure and can rotate around the axis of the pushing piece.
Preferably, the sampling head is further provided with an air outlet channel, and the air outlet channel can be in butt joint with the air outlet; the ends of the air outlet channel and the air inlet channel are provided with elastic pads.
Compared with the prior art, the invention has the following technical effects:
when the sampling pipe needs to be sampled and replaced, the control system controls the driving device to drive the sampling head to be in butt joint with the sampling pipe so as to sample the air microorganism in the new sampling pipe.
When the sampling is finished or the sampling tube needs to be replaced, the control system controls the driving device to drive the sampling head to be far away from the sampling tube, so that the purpose of smoothly taking out the sampling tube is achieved.
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 embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an air microorganism sampling device provided by the invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a view in another direction of FIG. 2;
FIG. 4 is a schematic diagram of an automated detection system incorporating the air microorganism sampling apparatus provided by the present invention;
FIG. 5 is a view in another direction of FIG. 4;
in the figure: 1-a clamping groove; 2-sampling head; 3-pushing rod; 4-a third support structure; 5-a tension spring; 6-a rocker; 7-a turntable; 8-pushing piece; 9-an air inlet of the air inlet channel; an air outlet of the 10-air outlet channel; 11-locating pins; 12-limiting columns; 13-shaft sleeve; 14-side plates; 15-motors, 16-driving wheels, 17-transmission belt groups, 18-belts and 100-sampling tubes; 101-a sampling tube body; 102-a magnetic bead transfer structure; 103-a detection chip; 104-an air outlet of the sampling tube; 105-air inlet of sampling tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The invention aims to provide an air microorganism sampling device, which solves the problems of the prior art, reduces the manual participation degree, improves the automation degree and contributes to realizing full-automatic sampling.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides an air microorganism sampling device, as shown in fig. 1-5, which comprises a sampling tube 100, a clamping groove 1, a sampling pump, a sampling head 2, a driving device and a control system, wherein the sampling tube 100 is detachably arranged in the clamping groove 1, the sampling tube 100 is a disposable sampling tube, sampling liquid is pre-arranged in the sampling tube 100, an air inlet and an air outlet are arranged on the side surface of the sampling tube 100, the sampling head 2 is provided with an air inlet channel, one end of the air inlet channel is communicated with the sampling pump, the other end of the air inlet channel can be butted on the air inlet, the driving device can drive the sampling head 2 to move towards the sampling tube 100 and enable the air inlet channel to be butted on the air inlet, and after the sampling is finished, the driving device and the sampling pump can also be driven to move towards a direction far away from the sampling tube 100 by the control system.
When sampling is needed and the sampling tube 100 is replaced, the control system controls the driving device to drive the sampling head 2 to be in butt joint with the sampling tube 100 so as to sample air microorganisms in the new sampling tube 100, and when sampling is carried out, the sampling pump pumps external air into the sampling tube 100 and enables air flow to collide with sampling liquid.
When the sampling is finished or the sampling tube 100 needs to be replaced, the control system controls the driving device to drive the sampling head 2 to be far away from the sampling tube 100, so that the purpose of smoothly taking out the sampling tube 100 is achieved.
In some embodiments, the clamping groove 1 is in a vertical state in a normal state, and an outlet of the clamping groove 1 is arranged at the top of the clamping groove 1; after the sampling tube 100 is used, the driving device can drive the sampling tube 100 to move upwards in the clamping groove 1 to the outlet to finish disassembly;
wherein, drive arrangement includes motor 15 and drive belt group 17, and the belt 18 of at least some drive belt group 17 is located one side of draw-in groove 1 along the direction of height of draw-in groove 1, and the action wheel 16 in motor 15 drive belt group 17 rotates and drives belt 18 and rotate, is provided with the slider on the belt 18, is provided with the drag hook on the slider, and the bottom of sampling tube 100 is provided with the hook groove with drag hook assorted, and the slider removes and makes the drag hook locate in the hook groove in order to drive sampling tube 100 to export (upwards) removal towards draw-in groove 1's export.
The sampling tube 100 can move downwards from the outlet into the clamping groove 1 under the action of self gravity to completely enter the clamping groove 1 and complete installation, and the sampling tube 100 comprises a sampling tube body 101, a disposable magnetic bead transfer structure 102 and a disposable detection chip 103 which are integrally arranged below the sampling tube body 101, because the sampling tube 100 is internally provided with the sampling liquid in advance, the weight of the whole sampling tube 100 can overcome the friction force given to the sampling tube 100 by the clamping groove 1 and move downwards.
The air microorganism sampling device provided by the embodiment facilitates the taking and placing of the sampling tube 100 in the clamping groove 1 by a worker, when the sampling tube 100 needs to be replaced, the driving device is controlled by the control system to drive the used waste sampling tube 100 to move out of the clamping groove 1, then the worker can manually take away the waste sampling tube 100 and place a new sampling tube 100 at the top of the clamping groove 1, and the sampling tube 100 is provided with the sampling liquid and the magnetic beads in advance, so that the sampling tube 100 moves downwards to completely enter the clamping groove 1 under the action of self gravity, thereby achieving the purpose of semi-automatically replacing the sampling tube 100.
In some embodiments, a pressing rod is disposed at the opening of the clamping groove 1, the pressing rod is pressed at the top of the sampling tube 100 in the clamping groove 1 in a normal state, a side plate 14 is disposed at one side of the clamping groove 1, the top end of the side plate 14 is fixedly connected with the pressing rod, one side of the side plate 14 is hinged on the first supporting structure, the other side edge is a movable edge, the movable edge is opposite to a fixed edge on the clamping groove 1, the fixed edge extends along the length direction of the clamping groove 1, the bottom of the movable edge extends in a direction away from the fixed edge and forms an inclined guiding edge, a driving rotating wheel is further disposed on the sliding block, the driving rotating wheel is located at the lower part of the movable edge and the fixed edge in a normal state, and the sliding block can drive the driving rotating wheel to move between the movable edge and the fixed edge along the guiding edge and can press the movable edge to the side plate 14 in a direction away from the fixed edge to drive the pressing rod to remove from the top of the sampling tube 100.
In order to improve the stability of the movement of the sliding block, one side of the clamping groove 1 is also provided with a sliding rail extending along the length direction of the clamping groove 1, and the sliding block or the drag hook is connected to the sliding rail in a sliding way.
In the solution provided in this embodiment, the sampling tube 100 is pressed and fastened in the clamping groove 1 by using the compression bar at the opening of the clamping groove 1, when the sampling tube 100 needs to be replaced, the motor 15 drives the driving pulley on the sliding block to move upwards when driving the driving belt 18 to rotate, and extrudes the movable edge to the direction away from the fixed edge until the side plate 14 drives the compression bar to move away from the top of the sampling tube 100, and then the draw hook moves to the hook groove again and drives the sampling tube 100 to move towards the outlet (upwards).
In a preferred embodiment, to facilitate self-repositioning of the side plates 14, the air microorganism sampling device provided in this embodiment further comprises a self-repositioning assembly having the following two forms;
the first, the automatic return subassembly includes the torsional spring, the torsional spring sets up in the articulated department of curb plate 14 and first bearing structure, can overcome the elasticity of torsional spring when curb plate 14 rotates to the direction of keeping away from draw-in groove 1, after the drive runner shifts out from between movable border and the fixed border under the drive of slider, the torsional spring gives the power of curb plate 14 automatic return;
second, the self-return assembly includes a first magnet provided on the side plate 14, and a material provided with the clamping groove 1 can attract the first magnet or an assembly capable of attracting the first magnet is provided on the surface of the clamping groove 1.
When the old sampling tube 100 is ejected out, the motor 15 rotates reversely and drives the driving belt 18 to rotate reversely to drive the sliding block to return, in the return process, a worker can place the new sampling tube 100 in the clamping groove 1 through the upper opening of the clamping groove 1, the sampling tube 100 moves downwards along with the draw hook under the action of gravity, after the sliding block moves and drives the driving wheel to move out from between the movable edge and the fixed edge, the side plate 14 automatically returns under the drive of the automatic return component and drives the compression bar to return to the position so as to compress and fix the top of the new sampling tube 100.
In some embodiments, the air microorganism sampling device provided in this embodiment further includes a turntable 7, a rocker 6 and a push rod 3, where the turntable 7 can rotate under the drive of a motor 15, the motor 15 is fixedly disposed on the push rod 3, the motor 15 drives the turntable 7 to rotate when driving the turntable 7 to rotate, the two gear transmission systems are both provided with clutches, the turntable 7 is provided with a push member 8, the push member 8 is arranged away from the center of the turntable 7, one end of the rocker 6 is rotatably disposed on the second support structure, the other end of the rocker 6 is disposed on one side of the push member 8, the push rod 3 is disposed on one side of the rocker 6 away from the push member 8, the push rod 3 is slidably disposed on the third support structure 4 in a direction away from and approaching the sampling tube 100, the sampling head 2 is fixedly disposed on the push rod 3, the motor 15 drives the push member 8 to rotate when driving the turntable 7 to rotate, the push member 8 pushes the rocker 6 to rotate towards the push rod 3, the rocker 6 pushes the push rod 3 to move, and the push rod 3 pushes the sampling head 2 towards the sampling tube 100 to move and realize butt joint;
the present embodiment achieves the purpose of using one motor 15 to drive multiple components for the purpose of miniaturizing the device, however, in other embodiments, when the volume of the device is not considered, one linear motor 15 may be used alone to drive the sampling head 2 to reciprocate linearly.
In the preferred embodiment, in order to realize the automatic return of the sampling head 2, the device further comprises a tension spring 5, two ends of the tension spring 5 are respectively connected to the sampling head 2 and the third supporting structure 4, the tension spring 5 is in a natural state in a normal state, when the sampling head 2 moves towards the sampling tube 100 and is in butt joint, the tension spring 5 is in a stretching state and gives the sampling head 2 an elastic force for returning to the original position, after the sampling is finished, the motor 15 rotates in the opposite direction, the turntable 7 and the pushing piece 8 are driven to sequentially act, and the sampling head 2 is subjected to the elastic force of the tension spring 5 and drives the push rod 3 to be far away from the sampling tube 100.
After sampling is finished, the motor 15 is reversed to drive the turntable 7 and the pushing piece 8 to actively return, and the sampling head 2 passively returns under the action of the tension spring 5, so that the sampling head 2 is far away from the sampling tube 100.
In some embodiments, in order to improve the accuracy of the butt joint between the sampling head 2 and the sampling tube 100 in the sampling process, the turntable 7 is in transmission connection with the motor 15 through a rotating shaft, and a shaft sleeve 13 is fixedly sleeved on the rotating shaft; a locating pin 11 is fixedly arranged on one side of the shaft sleeve 13 or one side of the rotary 7 disc, and a limit column 12 is fixedly arranged on the fourth supporting structure;
after the motor 15 drives the turntable 7 to rotate by a set angle, the positioning pin 11 can abut against the limiting column 12, and at the moment, the pushing piece 8 rotates to exceed the center line of the push rod 3 so as to realize that the resilience force of the tension spring is finally transferred to the limiting column 12.
In some embodiments, the pushing member 8 is a roller structure capable of rotating about its own axis.
In some embodiments, the sampling head 2 is further provided with an air outlet channel, and the air outlet channel can be butted on the air outlet; the end parts of the air outlet channel and the air inlet channel are provided with elastic gaskets so as to improve the tightness after butt joint.
The workflow of the preferred embodiment is as follows:
the clamping groove 1 defaults to a vertical state, and the clutches are in a separation state.
1. The motor 15 works, a clutch between the motor 15 and the transmission belt group 17 is closed, power is transmitted to the belt driving wheel 16, the belt 18 is driven to rotate anticlockwise, the sliding block pushes the consumable pressing plate to tilt, and meanwhile the drag hook moves from bottom to top to eject the consumable sampling tube 100 out of the clamping groove 1.
2. The sample tube 100 at the top of the cartridge 1 is manually removed and a new sample tube 100 is placed at the top of the cartridge 1.
3. The motor 15 drives the driving wheel 16 to rotate clockwise, the sampling tube 100 moves from top to bottom under the action of gravity, the sliding block moves from top to bottom, the lateral consumable pressing plate is not jacked up by the sliding block, and the sampling tube 100 is reset and locked and fixed.
4. The motor 15 works, the clutch between the motor 15 and the transmission belt group 17 is separated, the clutch between the motor 15 and the turntable 7 is closed, power is transmitted to the turntable 7 to drive the turntable 7 to rotate anticlockwise, the pushing piece 8 pushes the rocker 6, the rocker 6 pushes the push rod 3, and the push rod 3 pushes the sampling head 2 to be in butt joint with the sampling tube 100; and at this time, the positioning pin 11 abuts against the limiting column 12, and the pushing piece 8 rotates to exceed the center line of the push rod 3 so as to realize that the resilience force of the tension spring is finally transferred to the limiting column 12.
5. Sampling is performed.
6. The motor 15 is reversed and power is transmitted to the turntable 7 to rotate the turntable clockwise, and the pulley is far away from the rocker 6.
7. The push rod 3 is subjected to the force of restoring deformation of the tension spring 5, and the reverse jacking rocker 6 is reset.
8. The push rod 3 is retracted and reset, and the air inlet channel and the air outlet channel exit the sampling tube 100.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
1. An air microorganism sampling device which is characterized in that: the sampling device comprises a sampling tube, a clamping groove, a sampling pump, a sampling head, a driving device and a control system, wherein the sampling tube is detachably arranged in the clamping groove, the sampling tube is a disposable sampling tube, an air inlet and an air outlet are formed in the side face of the sampling tube, the sampling head is provided with an air inlet channel, one end of the air inlet channel is communicated with the sampling pump, the other end of the air inlet channel can be in butt joint with the air inlet, the driving device can drive the sampling head to move towards the sampling tube and enable the air inlet channel to be in butt joint with the air inlet, and after sampling is finished, the driving device and the sampling pump can be controlled to work by the control system;
normally, the clamping groove is in a vertical state, and an outlet of the clamping groove is arranged at the top of the clamping groove; after the sampling tube is used, the driving device can drive the sampling tube to move upwards in the clamping groove to the outlet to finish disassembly;
the sampling tube can move downwards to completely enter the clamping groove under the action of self gravity after being placed in the clamping groove from the outlet, and the installation is completed.
2. The air microorganism sampling device of claim 1, wherein: the driving device comprises a motor and a transmission belt group, at least part of the belt of the transmission belt group is arranged on one side of the clamping groove along the height direction of the clamping groove, the motor drives a driving wheel in the transmission belt group to rotate and drive the belt to rotate, a sliding block is arranged on the belt, a drag hook is arranged on the sliding block, a hook groove matched with the drag hook is arranged at the bottom of the sampling tube, the sliding block moves towards the outlet of the clamping groove and enables the drag hook to be hooked in the hook groove so as to drive the sampling tube to move towards the outlet.
3. The air microorganism sampling device of claim 2, wherein: the opening part of draw-in groove is provided with a depression bar, under the normality the depression bar is pressed and is located the top of draw-in groove in the sampling pipe, one side of draw-in groove is provided with the curb plate, the top of curb plate with depression bar fixed connection, one side of curb plate articulates on first bearing structure, and the opposite side border is movable border, movable border with a fixed border on the draw-in groove is relative, fixed border along the length direction of draw-in groove extends, movable border bottom is to keeping away from the direction of fixed border extends and forms a slope guiding border, still be provided with a drive runner on the slider, under the normality, the drive runner is located movable border with the lower part of fixed border, the slider can drive the drive runner along guiding border towards movable border with fixed border between the direction extrusion to the curb plate can be with movable border is kept away from fixed border the direction the depression bar is followed the sampling pipe removes top.
4. An air microorganism sampling device according to claim 3, wherein: and one side of the clamping groove is also provided with a sliding rail extending along the length direction of the clamping groove, and the sliding block or the drag hook is connected to the sliding rail in a sliding way.
5. An air microorganism sampling device according to claim 3, wherein: the automatic return assembly is provided with the following two forms;
the first type, the automatic return component comprises a torsion spring, the torsion spring is arranged at the hinge joint of the side plate and the first supporting structure, the elasticity of the torsion spring can be overcome when the side plate rotates in the direction away from the clamping groove, and when the driving rotating wheel is driven by the sliding block to move out from between the movable edge and the fixed edge, the torsion spring gives the side plate automatic return power;
second, self return subassembly includes first magnet, first magnet set up in on the curb plate, set up the material of draw-in groove can attract first magnet or be in the surface setting of draw-in groove can attract the subassembly of first magnet.
6. The air microorganism sampling device of claim 2, wherein: the device comprises a rotary table, a rocker and a push rod, wherein the rotary table can rotate under the driving of the motor, the motor respectively transmits torque to the rotary table and the driving wheel through two gear transmission systems, the two gear transmission systems are respectively provided with a clutch, the rotary table is provided with a push piece, the push piece deviates from the center of the rotary table, one end of the rocker can be rotatably arranged on a second supporting structure, the other end of the rocker is positioned on one side of the push piece, the push rod is positioned on one side of the rocker, which deviates from the push piece, the push rod can be slidably arranged on a third supporting structure along the direction away from and close to a sampling tube, the sampling head is fixedly arranged on the push rod, the motor drives the push piece to rotate when driving the rotary table, the push piece pushes the rocker to rotate towards the push rod, the rocker pushes the push rod to move, and the push rod pushes the sampling head to move towards the sampling tube and realize butt joint;
the sampling device comprises a sampling head, a third supporting structure, a motor, a tension spring, a turntable and a pushing piece, wherein the tension spring is connected to the sampling head and the third supporting structure respectively, in a natural state at two ends of the tension spring under a normal state, when the sampling head moves towards the sampling tube and is in butt joint, the tension spring is in a stretching state and gives an elastic force for restoring the sampling head to the original position, after sampling is completed, the motor rotates in the opposite direction to drive the turntable and the pushing piece to sequentially act, and the sampling head is subjected to the elastic force of the tension spring and drives the pushing piece to be far away from the sampling tube.
7. The air microorganism sampling device of claim 6, wherein: the rotary table is in transmission connection with the motor through a rotary shaft, and a shaft sleeve is fixedly sleeved on the rotary shaft; a locating pin is fixedly arranged on one side of the shaft sleeve or one side of the turntable, and a limit column is fixedly arranged on the fourth supporting structure;
after the motor drives the turntable to rotate by a set angle, the locating pin can prop against the limiting column, and at the moment, the pushing piece rotates to exceed the center line of the push rod so as to realize that the resilience force of the tension spring is finally transferred to the limiting column.
8. The air microorganism sampling device of claim 6, wherein: the pushing piece is of a roller structure and can rotate around the axis of the pushing piece.
9. The air microorganism sampling device of claim 6, wherein: the sampling head is also provided with an air outlet channel which can be butted on the air outlet; the ends of the air outlet channel and the air inlet channel are provided with elastic pads.
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| GB2254024A (en) * | 1991-03-25 | 1992-09-30 | Burkard Manufacturing Co Ltd | Cyclone sampler |
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| CN211947030U (en) * | 2020-03-25 | 2020-11-17 | 青岛市妇女儿童医院（青岛市妇幼保健院、青岛市残疾儿童医疗康复中心、青岛市新生儿疾病筛查中心） | Biological gene detects uses sample thief |
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| CN115161192A (en) * | 2022-09-07 | 2022-10-11 | 至美时代生物智能科技(北京)有限公司 | Automatic sampling device and air microorganism sampling method |
| CN219058971U (en) * | 2022-11-22 | 2023-05-23 | 中国检验认证集团湖北有限公司 | Automatic sampling device for microorganism detection in air supply of ventilation system of centralized air conditioner |
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2023
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| GB2254024A (en) * | 1991-03-25 | 1992-09-30 | Burkard Manufacturing Co Ltd | Cyclone sampler |
| JP2003130769A (en) * | 2001-10-29 | 2003-05-08 | Mitsubishi Materials Corp | Gas sampling device |
| CN211947030U (en) * | 2020-03-25 | 2020-11-17 | 青岛市妇女儿童医院（青岛市妇幼保健院、青岛市残疾儿童医疗康复中心、青岛市新生儿疾病筛查中心） | Biological gene detects uses sample thief |
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| CN219058971U (en) * | 2022-11-22 | 2023-05-23 | 中国检验认证集团湖北有限公司 | Automatic sampling device for microorganism detection in air supply of ventilation system of centralized air conditioner |
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