CN108906159A - A kind of good bioengineering experimental facilities of the low stability of labor intensity - Google Patents
A kind of good bioengineering experimental facilities of the low stability of labor intensity Download PDFInfo
- Publication number
- CN108906159A CN108906159A CN201810455792.XA CN201810455792A CN108906159A CN 108906159 A CN108906159 A CN 108906159A CN 201810455792 A CN201810455792 A CN 201810455792A CN 108906159 A CN108906159 A CN 108906159A
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- CN
- China
- Prior art keywords
- telescopic rod
- electric telescopic
- motor
- bioengineering
- test tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/06—Test-tube stands; Test-tube holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
- B01L2200/023—Adapting objects or devices to another adapted for different sizes of tubes, tips or container
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a kind of good bioengineering experimental facilities of the low stability of labor intensity,Including bottom plate,The surface of the bottom plate is equipped with installs case,The installs case is equipped with cleaning case,The top of the cleaning case is equipped with first motor,The output shaft of the first motor runs through and extends to the inside of cleaning case,The output shaft bottom end of the first motor is equipped with first gear,The inner cavity bottom end of the cleaning case is connected with second gear by bearing block,The first gear and second gear engagement connection,The second gear is equipped with cleaning brush,The good bioengineering experimental facilities of the low stability of this labor intensity,By to the first electric telescopic rod,Second electric telescopic rod,The work of third electric telescopic rod and the 4th electric telescopic rod is controlled,To which test tube be fixed by the first fixed ring and the second fixed ring,It can not only replace artificial hold,And convenient for the test tube of different size is fixed.
Description
Technical field
The present invention relates to technical field of experiment equipment, the good bioengineering of the low stability of specially a kind of labor intensity is real
Test equipment.
Background technique
Currently, bioengineering is frequently necessary to carry out lecture experiment, the experiment of some test tube classes is especially carried out, test tube is utilized
When testing, experimenter often holds test tube, is not easy to add drug in time or adds drug in order, some exothermic experiments
It is also possible to the teacher experimenter that can burn, and most of use open fires carry out heating operation, there is biggish risk, and
And when the experiment of existing progress test tube class, all it is to be stirred by hand, often will appear liquid spillage, cause experimental result inaccurate
Really, and mostly user is needed manually to carry out cleaning operation to test tube, operation is more troublesome.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of low stability of labor intensity good life
Object engineering experimental facilities is held test tube without using person, while being heated using electrothermal tube, without being stirred manually,
Test tube prune job can be automatically carried out, consequently facilitating the use of user, can effectively solve the problems in background technique.
To achieve the above object, the present invention provides the following technical solutions：A kind of good biological work of the low stability of labor intensity
Journey experimental facilities, including bottom plate, the surface of the bottom plate are equipped with installs case, and the installs case is equipped with cleaning case, described clear
The top of tank-washer is equipped with first motor, and the output shaft of the first motor runs through and extend to the inside of cleaning case, and described first
The output shaft bottom end of motor is equipped with first gear, and the inner cavity bottom end of the cleaning case is connected with second gear by bearing block, institute
First gear and second gear engagement connection are stated, the second gear is equipped with cleaning brush, the cleaning brush corresponding shaft bearing seat
It is equipped with through-hole at inner hollow, is equipped with jet pipe in the through-hole, the jet pipe is connected with water pump, the installs case side by pipeline
It is additionally provided with the first electric telescopic rod on the bottom plate in face, the top of first electric telescopic rod is equipped with the first link block, and described the
The two sides of one link block are equipped with the second electric telescopic rod, and the top of second electric telescopic rod is equipped with the first fixed ring, institute
It states and is equipped with third electric telescopic rod on the bottom plate of the first electric telescopic rod two sides, the top of the third electric telescopic rod is equipped with
The side of second link block, second link block is equipped with the 4th electric telescopic rod, and the 4th electric telescopic rod top is equipped with
The top of second fixed ring, second link block is equipped with the 5th electric telescopic rod, and the 5th electric telescopic rod top is equipped with
The surface of mounting plate, the mounting plate is equipped with the second motor, and the output shaft of second motor runs through and extends to mounting plate
Lower section, the output shaft bottom end of second motor are equipped with stirring pipe, and the stirring pipe and the output shaft of the second motor are set as Z-type
Structure, the side of the installs case are equipped with the 6th electric telescopic rod, and the top of the 6th electric telescopic rod is equipped with heating coil, institute
It states and is equipped with mounting groove in heating coil, electrothermal tube is equipped in the mounting groove, the surface of the installs case is equipped with PLC controller, institute
Output end electrical connection first motor, water pump, the first electric telescopic rod, the second electric telescopic rod, the third for stating PLC controller are electronic
Telescopic rod, the 4th electric telescopic rod, the 5th electric telescopic rod, the second motor, the 6th electric telescopic rod and electrothermal tube input terminal.
As a preferred technical solution of the present invention, the inner bottom of the heating coil is equipped with temperature sensor, described
The input terminal of the output end electrical connection PLC controller of temperature sensor.
As a preferred technical solution of the present invention, the side of the cleaning case is equipped with drainpipe, on the drainpipe
Equipped with solenoid valve, the input terminal of the output end electrical connection solenoid valve of PLC controller.
As a preferred technical solution of the present invention, the inside of the installs case is additionally provided with Storage Box, the Storage Box
It is interior to be equipped with sliding slot.
As a preferred technical solution of the present invention, rack for test tube, the rack for test tube bottom are slidably connected in the sliding slot
End is connected with support plate by connecting column.
As a preferred technical solution of the present invention, installs case above the Storage Box is equipped with shaft, and described turn
Baffle is rotatably connected on axis.
As a preferred technical solution of the present invention, the side of the installs case is equipped with frequency converter, the frequency converter with
The two-way electrical connection of PLC controller.
Compared with prior art, the beneficial effects of the invention are as follows：
1) the good bioengineering experimental facilities of the low stability of this labor intensity, by the first electric telescopic rod, second
The work of electric telescopic rod, third electric telescopic rod and the 4th electric telescopic rod is controlled, thus by the first fixed ring and
Test tube is fixed in second fixed ring, can not only hold instead of artificial, and carry out convenient for the test tube to different size
It is fixed.
2) the good bioengineering experimental facilities of the low stability of this labor intensity, passes through the work to the 5th electric telescopic rod
It is controlled, so that the height to stirring pipe is adjusted, is then controlled by the work to the second motor, to make
Rotation must be stirred, thus instead of hand operated mixing operation.
3) the good bioengineering experimental facilities of the low stability of this labor intensity, passes through the work to the 6th electric telescopic rod
Controlled, so that the position to heating coil is adjusted, then controlled in the work to electrothermal tube, thus to test tube into
Row heating operation, the flames of anger generates, to improve the safety of experiment.
4) the good bioengineering experimental facilities of the low stability of this labor intensity, is controlled by the work to first motor
System, to make cleaning brush rotate under the action of first gear and second gear, while making water pump operation, so that spray
There is water flow ejection in pipe, so as to carry out washing and cleaning operation to test tube, convenient for the use of user.
5) the good bioengineering experimental facilities of the low stability of this labor intensity is equipped with rack for test tube in the inside of Storage Box,
Consequently facilitating the test tube to user is stored, the setting of baffle can be prevented mobile outside rack for test tube.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is side structure schematic diagram of the present invention.
In figure：1 bottom plate, 2 installs cases, 3 cleaning cases, 4 first motors, 5 first gears, 6 second gears, 7 cleaning brush, 8 sprays
Pipe, 9 water pumps, 10 first electric telescopic rods, 11 first link blocks, 12 second electric telescopic rods, 13 first fixed rings, 14 thirds electricity
Dynamic telescopic rod, 15 second link blocks, 16 the 4th electric telescopic rods, 17 second fixed rings, 18 the 5th electric telescopic rods, 19 installations
Plate, 20 second motors, 21 stirring pipes, 22 the 6th electric telescopic rods, 23 heating coils, 24 mounting grooves, 25 electrothermal tubes, 26 temperature sensing
Device, 27 drainpipes, 28 solenoid valves, 29 Storage Boxes, 30 sliding slots, 31 rack for test tubes, 32 support plates, 33 baffles, 34 PLC controllers, 35
Frequency converter.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2,：A kind of good bioengineering of the low stability of labor intensity is used
Experimental facilities, including bottom plate 1, the surface of bottom plate 1 are equipped with installs case 2, and installs case 2 is equipped with cleaning case 3, the top of cleaning case 3
Equipped with first motor 4, the output shaft of first motor 4 runs through and extends to the inside of cleaning case 3, the output shaft bottom of first motor 4
End is equipped with first gear 5, and the inner cavity bottom end of cleaning case 3 is connected with second gear 6, first gear 5 and the second tooth by bearing block
6 engagement connection of wheel, second gear 6 are equipped with cleaning brush 7, are equipped with through-hole, through-hole at the inner hollow of 7 corresponding shaft bearing seat of cleaning brush
Interior to be equipped with jet pipe 8, jet pipe 8 is connected with water pump 9 by pipeline, is additionally provided with the first electric telescopic rod on the bottom plate 1 of 2 side of installs case
10, the top of the first electric telescopic rod 10 is equipped with the first link block 11, and the two sides of the first link block 11 are equipped with second and electronic stretch
Contracting bar 12, the top of the second electric telescopic rod 12 are equipped with the first fixed ring 13, on the bottom plate 1 of 10 two sides of the first electric telescopic rod
Equipped with third electric telescopic rod 14, the top of third electric telescopic rod 14 is equipped with the second link block 15, the side of the second link block 15
Face is equipped with the 4th electric telescopic rod 16, and 16 top of the 4th electric telescopic rod is equipped with the second fixed ring 17, the top of the second link block 15
End is equipped with the 5th electric telescopic rod 18, and 18 top of the 5th electric telescopic rod is equipped with mounting plate 19, and the surface of mounting plate 19 is equipped with the
The output shaft of two motors 20, the second motor 20 runs through and extends to the lower section of mounting plate 19, the output shaft bottom end of the second motor 20
Equipped with stirring pipe 21, the output shaft of stirring pipe 21 and the second motor 20 is set as Z-type structure, and the side of installs case 2 is equipped with the 6th
Electric telescopic rod 22, the top of the 6th electric telescopic rod 22 are equipped with heating coil 23, are equipped with mounting groove 24, mounting groove in heating coil 23
Electrothermal tube 25 is equipped in 24, the inner bottom of heating coil 23 is equipped with temperature sensor 26, surveys convenient for stable to heating
Amount, consequently facilitating carrying out heating operation, the side of cleaning case 3 is equipped with drainpipe 27, and drainpipe 27 is equipped with solenoid valve 28, passes through
The work of solenoid valve 28 is controlled, consequently facilitating discharging to waste liquid, the inside of installs case 2 is additionally provided with Storage Box 29,
It is equipped with sliding slot 30 in Storage Box 29, slidably connects rack for test tube 31 in sliding slot 30,31 bottom end of rack for test tube is connected with by connecting column
The installs case 2 of support plate 32,29 top of Storage Box is equipped with shaft, is rotatably connected to baffle 33 in shaft, rack for test tube 31 is set
It sets convenient for being stored to test tube, is adjusted by the position to baffle 33, consequently facilitating being limited to rack for test tube 31, pacified
The side of vanning 2 is equipped with frequency converter 35, by being configured on frequency converter 35, consequently facilitating to first motor 4 and the second electricity
The work of machine 20 is controlled, and the surface of installs case 2 is equipped with PLC controller 34, and the output end of temperature sensor 26 is electrically connected PLC
The input terminal of controller 34, frequency converter 35 with PLC controller 34 is two-way is electrically connected, the output end electrical connection of PLC controller 34 the
One motor 4, water pump 9, the first electric telescopic rod 10, the second electric telescopic rod 12, third electric telescopic rod 14, the 4th electric expansion
Bar 16, the 5th electric telescopic rod 18, the second motor 20, the 6th electric telescopic rod 22, electrothermal tube 25 and solenoid valve 28 input terminal,
PLC controller 34 controls first motor 4, water pump 9, the first electric telescopic rod 10, the second electric telescopic rod 12, third electric expansion
Bar 14, the 4th electric telescopic rod 16, the 5th electric telescopic rod 18, the second motor 20, the 6th electric telescopic rod 22,25 and of electrothermal tube
The work of solenoid valve 28 is all made of method commonly used in the prior art.
When in use：By to the first electric telescopic rod 10, the second electric telescopic rod 12, third electric telescopic rod 14 and
The work of four electric telescopic rods 16 is controlled, to be consolidated by the first fixed ring 13 and the second fixed ring 17 to test tube
It is fixed, the material of experiment is then added into test tube, is then controlled by the work to the 6th electric telescopic rod 22, thus right
The position of heating coil 23 is adjusted, thus to test tube carry out heating operation, by the work to the 5th electric telescopic rod 18 into
Row control, so that the height of stirring pipe 21 be adjusted, then controls by the work to the second motor 20, thus
It is stirred operation, after the completion of experiment, user places test tube mouth alignment cleaning brush 7, is then making first motor 4
It works with water pump 9, to be cleaned to test tube, finally test tube is stored on rack for test tube 31.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of good bioengineering experimental facilities of the low stability of labor intensity, including bottom plate (1), it is characterised in that：It is described
The surface of bottom plate (1) is equipped with installs case (2), and the installs case (2) is equipped with cleaning case (3), and the top of the cleaning case (3) is set
Have first motor (4), the output shaft of the first motor (4) runs through and extend to the inside of cleaning case (3), the first motor
(4) output shaft bottom end is equipped with first gear (5), and the inner cavity bottom end of the cleaning case (3) is connected with the second tooth by bearing block
It takes turns (6), the first gear (5) and second gear (6) engagement connection, the second gear (6) are equipped with cleaning brush (7), institute
It states and is equipped with through-hole at the inner hollow of cleaning brush (7) corresponding shaft bearing seat, be equipped with jet pipe (8) in the through-hole, the jet pipe (8) is logical
Piping is connected with water pump (9), is additionally provided with the first electric telescopic rod (10) on the bottom plate (1) of installs case (2) side, described
The top of first electric telescopic rod (10) is equipped with the first link block (11), and the two sides of first link block (11) are equipped with second
Electric telescopic rod (12), the top of second electric telescopic rod (12) are equipped with the first fixed ring (13), and described first electronic stretches
It is equipped with third electric telescopic rod (14) on the bottom plate (1) of contracting bar (10) two sides, the top of the third electric telescopic rod (14)
Equipped with the second link block (15), the side of second link block (15) is equipped with the 4th electric telescopic rod (16), the 4th electricity
Dynamic telescopic rod (16) top is equipped with the second fixed ring (17), and the top of second link block (15) is equipped with the 5th electric telescopic rod
(18), the 5th electric telescopic rod (18) top is equipped with mounting plate (19), and the surface of the mounting plate (19) is equipped with the second electricity
Machine (20), the output shaft of second motor (20) run through and extend to the lower section of mounting plate (19), second motor (20)
Output shaft bottom end be equipped with stirring pipe (21), the output shaft of the stirring pipe (21) and the second motor (20) is set as Z-type structure,
The side of the installs case (2) is equipped with the 6th electric telescopic rod (22), and the top of the 6th electric telescopic rod (22), which is equipped with, to be added
Gas ket (23), the heating coil (23) is interior to be equipped with mounting groove (24), is equipped with electrothermal tube (25) in the mounting groove (24), the peace
The surface of vanning (2) is equipped with PLC controller (34), and the output end of the PLC controller (34) is electrically connected first motor (4), water
Pump (9), the first electric telescopic rod (10), the second electric telescopic rod (12), third electric telescopic rod (14), the 4th electric telescopic rod
(16), the input terminal of the 5th electric telescopic rod (18), the second motor (20), the 6th electric telescopic rod (22) and electrothermal tube (25).
2. a kind of good bioengineering experimental facilities of the low stability of labor intensity according to claim 1, feature exist
In：The inner bottom of the heating coil (23) is equipped with temperature sensor (26), and the output end of the temperature sensor (26) is electrically connected
Connect the input terminal of PLC controller (34).
3. a kind of good bioengineering experimental facilities of the low stability of labor intensity according to claim 1, feature exist
In：The side of the cleaning case (3) is equipped with drainpipe (27), and the drainpipe (27) is equipped with solenoid valve (28), the PLC control
The input terminal of output end electrical connection solenoid valve (28) of device (34) processed.
4. a kind of good bioengineering experimental facilities of the low stability of labor intensity according to claim 1, feature exist
In：The inside of the installs case (2) is additionally provided with Storage Box (29), is equipped with sliding slot (30) in the Storage Box (29).
5. a kind of good bioengineering experimental facilities of the low stability of labor intensity according to claim 4, feature exist
In：It is slidably connected rack for test tube (31) in the sliding slot (30), rack for test tube (31) bottom end is connected with support by connecting column
Plate (32).
6. the good bioengineering experimental facilities of the low stability of a kind of labor intensity described in -4 according to claim 1, feature
It is：Installs case (2) above the Storage Box (29) is equipped with shaft, is rotatably connected to baffle (33) in the shaft.
7. the good bioengineering experimental facilities of the low stability of a kind of labor intensity described in -6 according to claim 1, feature
It is：The side of the installs case (2) is equipped with frequency converter (35), the frequency converter (35) with PLC controller (34) is two-way is electrically connected
It connects.
8. a kind of application method of the good bioengineering experimental facilities of the low stability of labor intensity, it is characterised in that：By right
First electric telescopic rod 10, the second electric telescopic rod 12, third electric telescopic rod 14 and the 4th electric telescopic rod 16 work into
Then row control adds experiment so that test tube be fixed by the first fixed ring 13 and the second fixed ring 17 into test tube
Material, then controlled by the work to the 6th electric telescopic rod 22, so that the position of heating coil 23 be adjusted,
To carry out heating operation to test tube, controlled by the work to the 5th electric telescopic rod 18, thus to stirring pipe 21
Height is adjusted, and then controls by the work to the second motor 20, to be stirred operation, experiment is completed
Afterwards, user places test tube mouth alignment cleaning brush 7, then first motor 4 and water pump 9 is worked, thus to examination
Pipe is cleaned, and finally test tube is stored on rack for test tube 31.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455792.XA CN108906159A (en) | 2018-05-14 | 2018-05-14 | A kind of good bioengineering experimental facilities of the low stability of labor intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455792.XA CN108906159A (en) | 2018-05-14 | 2018-05-14 | A kind of good bioengineering experimental facilities of the low stability of labor intensity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108906159A true CN108906159A (en) | 2018-11-30 |
Family
ID=64403128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810455792.XA Pending CN108906159A (en) | 2018-05-14 | 2018-05-14 | A kind of good bioengineering experimental facilities of the low stability of labor intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108906159A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425822A (en) * | 2018-03-20 | 2018-08-21 | 彭红星 | A kind of medical test tube water filling device |
| CN115193784A (en) * | 2022-07-13 | 2022-10-18 | 官靖哲 | Safe convenient high school student chemistry experiment device |
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|---|---|---|---|---|
| JPH0810628A (en) * | 1994-06-30 | 1996-01-16 | Sumika Bunseki Center:Kk | Quartz hot plate and clean draft |
| CN202570229U (en) * | 2012-04-13 | 2012-12-05 | 佳木斯大学 | Chemical experiment iron support for electrically heating |
| CN205056076U (en) * | 2015-10-16 | 2016-03-02 | 王永利 | Chemistry experiment frame |
| CN206560818U (en) * | 2017-08-22 | 2017-10-17 | 南昌工学院 | A kind of solution agitating device with heating function |
| CN206622142U (en) * | 2017-03-23 | 2017-11-10 | 王乔木 | Bench for chemistry experiment easy to operation |
-
2018
- 2018-05-14 CN CN201810455792.XA patent/CN108906159A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0810628A (en) * | 1994-06-30 | 1996-01-16 | Sumika Bunseki Center:Kk | Quartz hot plate and clean draft |
| CN202570229U (en) * | 2012-04-13 | 2012-12-05 | 佳木斯大学 | Chemical experiment iron support for electrically heating |
| CN205056076U (en) * | 2015-10-16 | 2016-03-02 | 王永利 | Chemistry experiment frame |
| CN206622142U (en) * | 2017-03-23 | 2017-11-10 | 王乔木 | Bench for chemistry experiment easy to operation |
| CN206560818U (en) * | 2017-08-22 | 2017-10-17 | 南昌工学院 | A kind of solution agitating device with heating function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425822A (en) * | 2018-03-20 | 2018-08-21 | 彭红星 | A kind of medical test tube water filling device |
| CN108425822B (en) * | 2018-03-20 | 2019-08-30 | 青岛大学附属医院 | A kind of medical test tube water filling device |
| CN115193784A (en) * | 2022-07-13 | 2022-10-18 | 官靖哲 | Safe convenient high school student chemistry experiment device |
| CN115193784B (en) * | 2022-07-13 | 2024-04-16 | 官靖哲 | Safe and convenient biochemical experiment device for high school |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |
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| RJ01 | Rejection of invention patent application after publication |