CN109900539A - A kind of HPV test experience biomimetic type reagent batch addition and evenly mixing device - Google Patents
A kind of HPV test experience biomimetic type reagent batch addition and evenly mixing device Download PDFInfo
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- CN109900539A CN109900539A CN201910200032.9A CN201910200032A CN109900539A CN 109900539 A CN109900539 A CN 109900539A CN 201910200032 A CN201910200032 A CN 201910200032A CN 109900539 A CN109900539 A CN 109900539A
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 129
- 238000002156 mixing Methods 0.000 title claims abstract description 46
- 230000003592 biomimetic effect Effects 0.000 title claims abstract description 33
- 238000009423 ventilation Methods 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 50
- 230000006698 induction Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000003756 stirring Methods 0.000 abstract description 5
- 238000007792 addition Methods 0.000 abstract 5
- 208000022361 Human papillomavirus infectious disease Diseases 0.000 description 16
- 241000700605 Viruses Species 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 208000019065 cervical carcinoma Diseases 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 206010059313 Anogenital warts Diseases 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 2
- 208000007860 Anus Neoplasms Diseases 0.000 description 1
- 208000000907 Condylomata Acuminata Diseases 0.000 description 1
- 241000701806 Human papillomavirus Species 0.000 description 1
- 208000009608 Papillomavirus Infections Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 201000011165 anus cancer Diseases 0.000 description 1
- 210000000270 basal cell Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000004196 common wart Diseases 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 208000003154 papilloma Diseases 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 201000010153 skin papilloma Diseases 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000002477 vacuolizing effect Effects 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
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Abstract
The invention discloses a kind of HPV test experience biomimetic type reagent batch additions and evenly mixing device, belong to reagent addition evenly mixing device technical field.It mainly include main body, mixing mechanism, batch addition mechanism, control device, power supply device, reagent diversion sleeve, telescopic pressure plate, motor, reagent storage frame, air accumulator;Spray head is mixed to be made of three ventilation blades, and the length of three ventilation blades from top to bottom successively increases, ventilation blade upper end is uniformly provided with multiple ventilation nozzles, and ventilation nozzle is helical structure, batch is carried out to reagent by mixing mechanism and places addition, can be improved working efficiency;Air mixes biomimetic type reagent by the ventilation nozzle of helical structure, and the air of spiral form can increase the mixed effect that reagent is improved to the actual stirring action of biomimetic type;Batch addition can be carried out to reagent through the invention, work efficiency is high, and it is good to the mixed effect of reagent, it is suitble to large-scale popularization.
Description
Technical field
The invention belongs to reagents to add evenly mixing device technical field, and in particular to a kind of HPV test experience is tried with biomimetic type
The addition of agent batch and evenly mixing device.
Background technique
HPV is a kind of papilloma vacuolating virus A category for belonging to papovaviridae, is spherical DNA virus, can cause human body
The scaly epithelium of skin and mucosa is proliferated, and shows as the symptoms such as verruca vulgaris, genital wart.Pressure gauge is with condyloma acuminatum in venereal disease
Disease incidence rapidly rises and cervical carcinoma, cancer of anus etc. increase, and HPV infection has attracted more and more attention from people.
HPV detection is a kind of means for tackling human papilloma virus, and venereal disease clinic confirms that the virus is a kind of DNA virus,
The mankind are the unique hosts of HPV, HPV enter body it is mucocutaneous after, mainly hide between basal cell in epidermis, once opportunity
It is mature it will cause a disease.Scientist has been proved through the HPV viruse that sexual life infects to be the Etiological for causing cervical carcinoma at present,
High-risk-HPV detection capture early cervical carcinoma is that one kind that medical field has just been invented and had developed in recent years is quickly and effectively examined
Survey method, can all 13 high-risk HPV viruses for being led to cervical carcinoma of one-time detection, make cervical carcinoma recall rate up to 99% or more.
This method is all simple and easy to do, hurtless measure, no pain periodically receive high-risk-HPV viruse detection, can find that early whether there is or not HPV
Virus infection and early treatment;When carrying out HPV test experience, need to use biomimetic type reagent, and by be mixed to reagent after
Batch addition is carried out, this just needs to use reagent addition and evenly mixing device.
For the pattern detection of batch, existing reagent addition and evenly mixing device can only be one by one to different test tubes
In successively add detection reagent, time-consuming and laborious when inspected number is bigger, working efficiency is low;It is mixed using Gas Stirring to reagent
When even, gas directly sprays from nozzle, small to the mixing power of reagent, and mixing effect is bad.
Summary of the invention
In view of the above problems, the present invention provides a kind of HPV test experience biomimetic type reagent batch and adds and mixed
Even device.
The technical scheme is that a kind of HPV test experience biomimetic type reagent batch addition and evenly mixing device, mainly
Including main body, mixing mechanism, batch addition mechanism, control device, power supply device;The main body includes support frame, cabinet one, case
Body two, the cabinet one are fixedly connected by connecting rod with support frame as described above upper end, and multiple cavities, each chamber are equipped in cabinet one
Body bottom end is equipped with liquid outlet one, liquid separation disk is equipped at the liquid outlet one, the liquid separation disk is equipped with multiple liquid separating ports, described
Cabinet two is located at one upper end of cabinet, and two bottom end of cabinet is equipped with multiple liquid outlets two, and the liquid outlet two passes through with cavity to be connect
Pipe connects one to one, and junction is equipped with solenoid valve one, and two upper end of cabinet is equipped with filling opening;The mixing mechanism includes miniature
Air compressor machine mixes spray head, snorkel, and the mini air compressor is located at outside cabinet two, and the snorkel level is located at cabinet two
Inner bottom, the mixing spray head has multiple, and multiple mixing spray heads are evenly distributed on snorkel, and with snorkel through connecting
It connects;Batch addition mechanism includes reagent diversion sleeve, telescopic pressure plate, motor, reagent storage frame, each reagent diversion sleeve,
Telescopic pressure plate, motor, reagent storage frame are one group, are equipped with multiple groups altogether, and reagent diversion sleeve is within the cavity, and reagent diversion sleeve is bullet
Property compression piece, and multiple zones of aeration are from top to bottom uniformly provided on reagent diversion sleeve, telescopic pressure plate passes through spring lever and reagent point
Set upper side connection is flowed, the motor is connect with telescopic pressure plate, and the reagent storage frame is located at support frame upper end, each reagent storage
Frame is equipped with multiple reagent storage pipes, and the reagent storage pipe and liquid separating port correspond, and are located at immediately below liquid separating port;It is described
Control device and solenoid valve one, mini air compressor, electrical connection of motor;The power supply device be solenoid valve one, mini air compressor,
Motor provides power supply.
Further, liquid level sensor is equipped in each cavity, by liquid level sensor to the intracorporal reagent solution of chamber
Position is detected, and avoids the reagent liquid level of cavity too low, motor is caused to dally, and wastes electric energy.
Further, drainage tube is equipped at each liquid separating port, and the drainage tube and reagent storage pipe one are a pair of
It answers, the reagent in reagent diversion sleeve is drained in corresponding reagent storage pipe by drainage tube, reagent is avoided to trickle down to outside,
It causes to waste.
Further, the filling opening upper end is equipped with induction cover board, and infrared inductor is equipped in the induction cover board, described
Infrared inductor is connect with control device, has detected whether that staff wants reagent adding by infrared inductor, and by infrared letter
Number being converted to electric signal is sent to control device.
Further, the mixing mechanism further includes air accumulator, and the air accumulator is located at one upper end of cabinet, and air accumulator with
Mini air compressor, snorkel connection, and junction is respectively equipped with solenoid valve two, the sky compressed by air accumulator to mini air compressor
Gas is stored, and when needed, is opened solenoid valve two and is passed through air into cabinet two, mix to biomimetic type reagent.
Further, the air accumulator is equipped with safety valve, pressure gauge, blowdown valve, and the safety valve is located on air accumulator
End avoids hypertonia from damaging the person, or to damage equipment, the pressure gauge for controlling the pressure in air accumulator
It is connect with control device, for showing that reservoir pressure, the blowdown valve are hand-operated valve, blowdown valve is located at air accumulator bottom end, uses
In air accumulator periodical blowdown.
Further, the mixing spray head is made of three ventilation blades, and the length of three ventilation blades is by upper
It is successively increased under, ventilation blade upper end is uniformly provided with multiple ventilation nozzles, is compressed mini air compressor into logical by mixing spray head
Endotracheal air is sent into cabinet two, and completion mixes the biomimetic type reagent in cabinet two.
Further, the ventilation nozzle is helical structure, and ventilation nozzle side wall is equipped with helicla flute, after air passes through helicla flute
Helically form enters in cabinet two and mixes to biomimetic type reagent, and the air of spiral form can increase actual to biomimetic type
Stirring action is to make the mixed effect for improving reagent.
The operation principle of the present invention is that: when needing to add biomimetic type reagent, staff passes through infrared sense close to the device
It answers device to sense infrared signal, infrared signal is converted into electric signal and is sent to control device, open induction cover board, pass through liquid feeding
Biomimetic type reagent is added in cabinet 2 12 by mouth 121, and starting mini air compressor compresses air, and compressed air is deposited
Enter air accumulator, helically form sprays the air in air accumulator from the ventilation nozzle on each mixing spray head through snorkel, to cabinet
Reagent in two carries out mixing processing, opens solenoid valve one, and the reagent that mixes that treated enters each chamber through each solenoid valve one
Body starts motor, and motor drives telescopic pressure plate flexible to drive reagent diversion sleeve flexible up and down up and down, and reagent diversion sleeve is upward
During stretching, the intracorporal reagent of chamber is sucked in reagent diversion sleeve by zone of aeration, after reagent enters in reagent diversion sleeve,
Entered in each reagent storage pipe by the drainage tube on each liquid separating port and is placed.
It is added and mixed the beneficial effects of the present invention are: the present invention provides a kind of HPV test experience biomimetic type reagent batch
Even device enters in each reagent storage pipe after being shunted by reagent diversion sleeve and liquid separation disk to the reagent in cabinet one and criticizes
Amount places addition, improves working efficiency;The reagent in reagent diversion sleeve is drained to corresponding reagent storage pipe by drainage tube
It is interior, it avoids reagent from trickling down to outside, causes to waste;Detect whether that staff wants reagent adding by infrared inductor, and will
Infrared signal is converted to electric signal and is sent to control device;It is stored by the air that air accumulator compresses mini air compressor,
When needed, it opens solenoid valve two and is passed through air into cabinet two, biomimetic type reagent is mixed;It will be micro- by mixing spray head
Type air compressor machine is compressed to be sent into cabinet two into the air in snorkel, and completion mixes the biomimetic type reagent in cabinet two;
By the way that helically form enters in cabinet two and mixes to biomimetic type reagent after helicla flute, the air of spiral form can increase air
Greatly to the actual stirring action of biomimetic type to make the mixed effect for improving reagent;Batch can be carried out to reagent through the invention
Addition, can work efficiency is high, it is good to the mixed effect of reagent, be suitble to large-scale popularization.
Detailed description of the invention
Fig. 1 is external structure schematic diagram of the present invention;
Fig. 2 is schematic diagram of internal structure of the present invention;
Fig. 3 is the structural schematic diagram of liquid separation disk of the invention;
Fig. 4 is the structural schematic diagram of mixing spray head of the invention;
Fig. 5 is ventilation nozzle structural schematic diagram of the invention;
Fig. 6 is the structural schematic diagram of reagent storage frame of the invention;
Fig. 7 is electrical module figure of the invention.
Wherein, 1- main body, 10- support frame, 11- cabinet one, 110- cavity, 111- liquid level sensor, 1110- liquid outlet
One, 1111- liquid separation disk, 1112- liquid separating port, 1113- drainage tube, 12- cabinet two, 120- liquid outlet two, 1200- solenoid valve one,
121- filling opening, 1210- induction cover board, 1211- infrared inductor, 2- mixing mechanism, 20- mini air compressor, 21- mix spray
Head, 211- ventilation blade, 2110- ventilation nozzle, 2111- helicla flute, 22- snorkel, 23- air accumulator, 230- safety valve, 231- pressure
Power table, 232- blowdown valve, 24- solenoid valve two, 3- batch addition mechanism, 30- reagent diversion sleeve, 300- zone of aeration, the flexible pressure of 31-
Plate, 32- motor, 33- reagent storage frame, 330- reagent storage pipe, 4- control device, 5- power supply device.
Specific embodiment
Embodiment: main to wrap such as Fig. 1,2 a kind of HPV test experience biomimetic type reagent batch addition and evenly mixing device
Include main body 1, mixing mechanism 2, batch addition mechanism 3, control device 4, power supply device 5;Main body 1 includes support frame 10, cabinet one
11, cabinet 2 12, cabinet 1 are fixedly connected by connecting rod with 10 upper end of support frame, and multiple cavities are equipped in cabinet 1
110, each 110 bottom end of cavity is equipped with liquid outlet 1, is equipped with liquid separation disk 1111 at liquid outlet 1, as shown in figure 3,
Liquid separation disk 1111 is equipped with multiple liquid separating ports 1112, is equipped with drainage tube 1113 at a liquid separating port 1112, and drainage tube 1113 with
Reagent storage pipe 330 corresponds, and the reagent in reagent diversion sleeve 30 is drained to corresponding reagent by drainage tube 1113 and is deposited
It puts in pipe 330, reagent is avoided to trickle down to outside, cause to waste, be equipped with liquid level sensor 111 in each cavity 110, pass through liquid level
Sensor 111 detects the reagent liquid level in cavity 110, avoids the reagent liquid level of cavity 110 too low, causes motor 32 empty
Turn, wastes electric energy, cabinet 2 12 is located at one 11 upper end of cabinet, and 2 12 bottom end of cabinet is equipped with multiple liquid outlets 2 120, liquid outlet
2 120 are connected one to one with cavity 110 by connecting tube, and junction is equipped with solenoid valve 1, and 2 12 upper end of cabinet is set
There is filling opening 121,121 upper end of filling opening is equipped with induction cover board 1210, and infrared inductor 1211 is equipped in induction cover board 1210, red
Outer inductor 1211 is connect with control device 4, has detected whether that staff wants reagent adding by infrared inductor 1211, and will
Infrared signal is converted to electric signal and is sent to control device 4;Mixing mechanism 2 includes mini air compressor 20, mixes spray head 21, ventilation
Pipe 22, air accumulator 23, mini air compressor 20 are located at outside cabinet 2 12, and 22 level of snorkel is located at the inner bottom of cabinet 2 12
End, mixing spray head 21 has multiple, and multiple mixings spray heads 21 are evenly distributed on snorkel 22, and with snorkel 22 through connecting,
It is made of as shown in figure 4, mixing spray head 21 three ventilation blades 211, and the length of three blades 211 of ventilating is from top to bottom successively
Increase, ventilation 211 upper end of blade be uniformly provided with multiple ventilation nozzles 2110, by mix spray head 21 by mini air compressor 20 compress into
Air in snorkel 22 is sent into cabinet 2 12, and completion mixes the biomimetic type reagent in cabinet 2 12, such as Fig. 5 institute
Show, ventilation nozzle 2110 is helical structure, and 2110 side wall of ventilation nozzle is equipped with helicla flute 2111, and air by being in after helicla flute 2111
Spiral form, which enters in cabinet 2 12, mixes biomimetic type reagent, and the air of spiral form can increase actual to biomimetic type
For stirring action to make the mixed effect for improving reagent, air accumulator 23 is located at one 11 upper end of cabinet, and air accumulator 23 and miniature sky
Press 20, snorkel 22 connect, and junction is respectively equipped with solenoid valve 2 24, are compressed by air accumulator 23 to mini air compressor 20
Air stored, when needed, open solenoid valve 2 24 be passed through air into cabinet 2 12, biomimetic type reagent is mixed
Even, safety valve 230 is located at 23 upper end of air accumulator and avoids hypertonia from causing the person for controlling the pressure in air accumulator 23
Injury, or to damage equipment, pressure gauge 231 is connect with control device 4, for showing that reservoir pressure, blowdown valve 232 are manual
Valve, blowdown valve 232 are located at air accumulator bottom end, are used for air accumulator periodical blowdown;Batch addition mechanism 3 include reagent diversion sleeve 30,
Telescopic pressure plate 31, motor 32, reagent storage frame 33, each reagent diversion sleeve 30, telescopic pressure plate 31, motor 32, reagent storage
Frame 33 is one group, is equipped with multiple groups altogether, and reagent diversion sleeve 30 is located in cavity 110, and reagent diversion sleeve 30 is elastic compression part, and is tried
Multiple zones of aeration 300 are from top to bottom uniformly provided on agent diversion sleeve 30, telescopic pressure plate 31 passes through spring lever and reagent diversion sleeve 30
Upper end connection, motor 32 are connect with telescopic pressure plate 31, and reagent storage frame 33 is located at 10 upper end of support frame, as shown in fig. 6, each examination
Agent storage rack 33 is equipped with multiple reagent storage pipes 330, and reagent storage pipe 330 and liquid separating port 1112 correspond, and are located at and divide
Immediately below liquid mouth 1112;Control device 4 and liquid level sensor 111, solenoid valve 1, infrared inductor 1211, miniature pneumatics
Machine 20, pressure gauge 231, solenoid valve 2 24, motor 32 are electrically connected;Power supply device 5 is liquid level sensor 111, solenoid valve one
1200, infrared inductor 1211, mini air compressor 20, pressure gauge 231, solenoid valve 2 24, motor 32 provide power supply.
When needing to add biomimetic type reagent, staff is sensed infrared close to the device by infrared inductor 1211
Infrared signal is converted to electric signal and is sent to control device 4 by signal, is opened induction cover board 1210, will be imitated by filling opening 121
Raw type reagent is added in cabinet 2 12, and starting mini air compressor 20 compresses air, and compressed air is stored in gas storage
Tank 23, through snorkel 22, from the ventilation nozzle 2110 on each mixing spray head 21, helically form sprays the air in air accumulator 23,
Mixing processing carried out to the reagent in cabinet 2 12, opens solenoid valve 1, the reagent that mixes that treated is through each solenoid valve
One 1200 enter each cavity 110, start motor 32, and motor 32 drives about 31 telescopic pressure plate flexible to drive reagent to shunt
About 30 set is flexible, during reagent diversion sleeve 30 is pulled up, is sucked the reagent in cavity 110 by zone of aeration 300
In reagent diversion sleeve 30, after reagent enters in reagent diversion sleeve 30, entered by the drainage tube 1113 on each liquid separating port 1112
It is placed in each reagent storage pipe 330.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features;And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (7)
1. a kind of HPV test experience biomimetic type reagent batch addition and evenly mixing device, which is characterized in that mainly include main body
(1), mixing mechanism (2), batch addition mechanism (3), control device (4), power supply device (5);The main body (1) includes support frame
(10), cabinet one (11), cabinet two (12), the cabinet one (11) connect by the way that connecting rod and support frame as described above (10) upper end are fixed
Connect, be equipped with multiple cavities (110) in cabinet one (11), each cavity (110) bottom end is equipped with liquid outlet one (1110), it is described go out
Liquid separation disk (1111) are equipped at liquid mouth one (1110), the liquid separation disk (1111) is equipped with multiple liquid separating ports (1112), the case
Body two (12) is located at cabinet one (11) upper end, and cabinet two (12) bottom end is equipped with multiple liquid outlets two (120), the liquid outlet two
(120) it is connected one to one with cavity (110) by connecting tube, and junction is equipped with solenoid valve one (1200), cabinet two (12)
Upper end is equipped with filling opening (121);The mixing mechanism (2) includes mini air compressor (20), mixes spray head (21), snorkel
(22), the mini air compressor (20) is located at cabinet two (12) outside, and snorkel (22) level is located at cabinet two (12)
Inner bottom, the mixing spray head (21) have multiple, and multiple mixing spray heads (21) are evenly distributed on snorkel (22), and with it is logical
Tracheae (22) is through connection;Batch addition mechanism (3) include reagent diversion sleeve (30), telescopic pressure plate (31), motor (32),
Reagent storage frame (33), each reagent diversion sleeve (30), telescopic pressure plate (31), motor (32), reagent storage frame (33) are one
Group is equipped with multiple groups altogether, and reagent diversion sleeve (30) is located in cavity (110), and reagent diversion sleeve (30) is elastic compression part, and reagent
It is from top to bottom uniformly provided on diversion sleeve (30) multiple zones of aeration (300), telescopic pressure plate (31) is shunted by spring lever and reagent
The connection of (30) upper end is covered, the motor (32) connect with telescopic pressure plate (31), and the reagent storage frame (33) is located at support frame
(10) upper end, each reagent storage frame (33) be equipped with multiple reagent storage pipes (330), the reagent storage pipe (330) with point
Liquid mouth (1112) corresponds, and is located at immediately below liquid separating port (1112);The control device (4) and solenoid valve one (1200),
Mini air compressor (20), motor (32) are electrically connected;The power supply device (5) is solenoid valve one (1200), mini air compressor
(20), motor (32) provides power supply.
2. a kind of HPV test experience according to claim 1 biomimetic type reagent batch addition and evenly mixing device, feature
It is, is equipped with liquid level sensor (111) in each cavity (110).
3. a kind of HPV test experience according to claim 1 biomimetic type reagent batch addition and evenly mixing device, feature
It is, is equipped with drainage tube (1113) at each liquid separating port (1112), and the drainage tube (1113) and reagent storage pipe
(330) it corresponds.
4. a kind of HPV test experience according to claim 1 biomimetic type reagent batch addition and evenly mixing device, feature
It is, filling opening (121) upper end is equipped with induction cover board (1210), is equipped with infrared inductor in the induction cover board (1210)
(1211), the infrared inductor (1211) connect with control device (4).
5. a kind of HPV test experience according to claim 1 biomimetic type reagent batch addition and evenly mixing device, feature
It is, the mixing mechanism (2) further includes air accumulator (23), and the air accumulator (23) is located at cabinet one (11) upper end, and gas storage
Tank (23) is connect with mini air compressor (20), snorkel (22), and junction is respectively equipped with solenoid valve two (24).
6. a kind of HPV test experience according to claim 1 biomimetic type reagent batch addition and evenly mixing device, feature
Be, the mixing spray head (21) is made of three ventilation blades (211), and three it is described ventilation blade (211) length by
It is successively increased under, ventilation blade (211) upper end is uniformly provided with multiple ventilation nozzles (2110).
7. a kind of HPV test experience according to claim 6 biomimetic type reagent batch addition and evenly mixing device, feature
It is, the ventilation nozzle (2110) is helical structure, and ventilation nozzle (2110) side wall is equipped with helicla flute (2111).
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