CN219209594U - Horizontal virus preservation solution configuration device - Google Patents
Horizontal virus preservation solution configuration device Download PDFInfo
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- CN219209594U CN219209594U CN202223168741.XU CN202223168741U CN219209594U CN 219209594 U CN219209594 U CN 219209594U CN 202223168741 U CN202223168741 U CN 202223168741U CN 219209594 U CN219209594 U CN 219209594U
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- virus
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- 239000003761 preservation solution Substances 0.000 title claims abstract description 34
- 241000700605 Viruses Species 0.000 title claims abstract description 31
- 238000012546 transfer Methods 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000003756 stirring Methods 0.000 claims abstract description 34
- 238000004321 preservation Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000001223 reverse osmosis Methods 0.000 claims description 2
- 239000008399 tap water Substances 0.000 claims description 2
- 235000020679 tap water Nutrition 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000012856 packing Methods 0.000 claims 1
- 239000008213 purified water Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 238000011049 filling Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model provides a horizontal virus preservation solution configuration device which comprises a horizontal configuration barrel, a transfer barrel, a bracket and a conveying pipeline. The horizontal configuration barrel comprises a configuration groove, a stirring shaft, a driving piece, a top cover, a feeding hopper, a water inlet connector and a preservation liquid conveying port. The bottom layer of the configuration groove is longer than the top layer to form a converging cavity. The stirring shaft is arranged at the bottom layer of the configuration groove. The transfer bucket is equipped with feed inlet and discharge gate. The support supports the horizontal configuration barrel, and a preservation liquid conveying port of the horizontal configuration barrel is higher than the transfer barrel. The conveying pipeline is connected with a preservation liquid conveying port of the horizontal configuration barrel and a feeding port of the transfer barrel. According to the utility model, the horizontal configuration barrel is arranged, so that the height of the configuration barrel is reduced, and inconvenience in raw material addition and cleaning of operators is avoided. Simultaneously, set up and assemble chamber and (mixing) shaft, not only can stir the raw materials, can also be with preserving fluid toward assembling the chamber and pour into, further provide power for the discharge of preserving fluid.
Description
Technical Field
The utility model relates to a horizontal virus preservation solution configuration device.
Background
The virus preservation solution is a protective liquid medium of a virus sample, is a pre-reagent for nucleic acid, is usually called a virus preservation solution in China, and is custom-called VTM solution or UTM solution. The virus preservation solution has great demand after epidemic situation.
The virus-preserving fluid is disposed in the tank and is transported to the filling line after being disposed. The filling line has a variety of gauges and is simultaneously connected to a preparation tank for the virus-preserving fluid. In the process of conveying the virus preservation liquid, if the liquid conveying amount and the conveying force are insufficient, bubbles can appear in a pipeline of a filling line, and the amount of the canned liquid is inaccurate.
In order to solve the above problems, the existing virus preservation solution configuration device mainly comprises two technical schemes, the following two schemes and the technical problems existing in the schemes are listed: 1. and the preservation liquid in the configuration barrel is conveyed into the transfer barrel by adopting a pumping mode through a pump. If a common pump is adopted, the problem that the pump is corroded by the preservation liquid exists, so that a great amount of maintenance cost is brought to the conveying equipment, the conveying progress of the virus preservation liquid is influenced, and if a special or special pump is adopted, the problem that the overall cost of the conveying equipment is greatly increased is caused; 2. the method of raising the preparation barrel is adopted, the preparation barrel is higher than the transfer barrel, and the preservation liquid is output by utilizing the gravity mode, the method has the advantages that the preparation barrel is too high, the operation personnel is influenced to manually add virus preservation liquid preparation raw materials, the operation personnel is influenced to clean the inside of the preparation barrel, in addition, the structure omits a pump, the problem of insufficient conveying force exists, and the preservation liquid in the preparation barrel cannot be quickly conveyed out to enter the next round of preparation.
It can be seen that there is still a need for further improvements in existing virus preservation solution dispensing devices.
Disclosure of Invention
The utility model provides a virus preservation solution configuration device which does not need pumping and has strong still conveying force.
A horizontal virus preservation solution configuration device comprises a horizontal configuration barrel, a transfer barrel, a bracket and a conveying pipeline, wherein,
the horizontal configuration barrel comprises a configuration groove, a stirring shaft, a driving piece, a top cover, a feed hopper, a water inlet joint and a preservation liquid conveying port, in particular,
the configuration slot is divided into two parts, including: the semi-cylindrical bottom layer and the square top layer, and the length of bottom layer is greater than the top layer, the part that bottom and top layer stagger forms the chamber that gathers.
The stirring shafts are arranged in a pair at intervals and parallel to the axial direction of the bottom layer, are installed in the bottom layer of the configuration groove, can stir water and raw materials in the configuration groove through forward rotation, and can convey preservation liquid to the conveying converging cavity through reverse rotation, so that conveying force is further provided for the preservation liquid transferred to the transfer barrel.
The driving piece is arranged at the top of the converging cavity and connected with the stirring shaft.
The top cover covers the top of the configuration groove. The feed hopper is mounted on the top cover. The water inlet connector is communicated with the top layer of the configuration groove. The preservation liquid conveying port is arranged at the bottom of the horizontal configuration barrel and is close to the end part of the converging cavity.
The transfer bucket is equipped with feed inlet and discharge gate, transfer bucket is at least one, can dock many filling lines.
The support supports the horizontal configuration barrel, and the preservation liquid conveying port of the horizontal configuration barrel is higher than the transfer barrel, so that virus preservation liquid can be conveyed into the transfer barrel by means of weight.
The conveying pipeline is connected with a preservation liquid conveying port of the horizontal configuration barrel and a feeding port of the transfer barrel.
The utility model can reduce the height of the configuration barrel by arranging the horizontal configuration barrel, thereby solving the problem that the configuration barrel without a pump is too high and avoiding the inconvenience of adding and cleaning the raw materials by operators. Meanwhile, the horizontal configuration barrel is divided into two layers, the bottom layer is longer, a converging cavity is formed, and the stirring shaft is arranged, so that raw materials can be stirred, preservation liquid can be filled into the converging cavity, and power is further provided for the discharge of the preservation liquid.
Preferably, the horizontal configuration barrel is obliquely arranged through the bracket, and the preservation liquid conveying port is positioned at the lower end, so that virus preservation liquid can be completely discharged.
Preferably, the screw is arranged at the periphery of the stirring shaft, so that the force of pouring the converging cavity in the process of reversing the stirring shaft can be improved.
Preferably, the periphery of the auger is covered with LLDPE material to avoid corrosion of the stirring shaft by the virus-preserving fluid.
Preferably, the discharge port of the transfer barrel is positioned above the feed port. And a filter frame is arranged in the transfer barrel. The filter frame is arranged between the feed inlet and the discharge outlet. When the device is used, preservation liquid enters from the feed inlet of the transfer barrel, is filtered by the filter frame, and is discharged from the discharge outlet of the transfer barrel. According to the utility model, the discharge hole is arranged above the feed hole, so that impurities on the filter screen can be pushed away in the upward surging process of water, and the impurities are deposited to the bottom of the transfer barrel through gravity, so that the impurities in the preservation solution can be prevented from being blocked on the filter screen.
Preferably, the three-way joint is installed at the feed inlet and the discharge outlet of the transfer barrel. The other two interfaces of the three-way joint of the feed inlet are respectively used for receiving the waste liquid collection box and the conveying pipeline. The other two interfaces of the tee joint of the discharge port are respectively butted with a tank assembly line and a cleaning water source. And each three-way joint is provided with a valve, so that the communication of any two interfaces can be switched and the communication of three interfaces can be completely blocked. When the whole device is cleaned, the feeding port of the transfer barrel is communicated with the waste liquid collecting box, the discharging port of the transfer barrel is communicated with a cleaning water source, the transfer barrel is guided by clean water, the inner wall of the transfer barrel is cleaned, meanwhile, the filter screen can be flushed, and the cleaned water is discharged into the waste liquid collecting box.
Preferably, the terminal of the conveying pipeline is also provided with a three-way joint, and the two joints of the three-way joint are respectively connected with the waste liquid collecting box and the sewer. The three-way joint of the conveying pipeline is also provided with a valve.
Preferably, the valves of the three-way connectors are all electric control valves, so that the remote control of operators is facilitated.
Preferably, the driving member includes a motor, three synchronizing wheels and two synchronizing belts. The motor is mounted on top of the converging cavity. The rotating shafts of the two stirring shafts extend to the outside of the configuration barrel. The three synchronizing wheels are respectively arranged on the rotating shaft and the stirring shaft of the motor, one of the synchronizing wheels is provided with two layers, one layer is connected with the synchronizing wheel of the stirring shaft through a synchronous belt, and the other layer is connected with the synchronizing wheel of the motor through another synchronous belt.
Preferably, the water inlet joint of the horizontal configuration barrel is connected with tap water through a secondary reverse osmosis water purification device.
From the above description of the utility model, the utility model has the following advantages:
the height of the configuration barrel can be reduced by arranging the horizontal configuration barrel, so that the problem that the configuration barrel without a pump is too high is solved, and the inconvenience of adding and cleaning raw materials by operators is avoided;
the horizontal configuration barrel is divided into two layers, the bottom layer is longer, a converging cavity is formed, and the stirring shaft is arranged, so that raw materials can be stirred, preservation liquid can be poured into the converging cavity, and further power is provided for the discharge of the preservation liquid;
the filter frame is arranged in the transfer barrel, so that impurities in the preservation solution can be filtered out;
through setting up the discharge gate in the top of feed inlet, water can push away the impurity on the filter screen at the in-process that upwards gushes, and the impurity passes through gravity to be deposited to the transfer barrel bottom, can avoid preserving the impurity card in the liquid on the filter screen, also is convenient for clear up the discharge impurity.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.
Wherein:
FIG. 1 is an isometric view I of a horizontal virus-preserving fluid placement device;
FIG. 2 is a second axial view of a horizontal virus-preserving fluid preparing device;
FIG. 3 is a front view of a horizontal virus-preserving fluid preparing apparatus;
FIG. 4 is a side view of a horizontal virus-preserving fluid preparing apparatus;
FIG. 5 is a plan view of a horizontal virus-preserving fluid preparing apparatus;
FIG. 6 is a cross-sectional view I of a horizontal virus-preserving fluid preparing apparatus;
FIG. 7 is a second cross-sectional view of a horizontal virus-preserving fluid placement device;
FIG. 8 is a third cross-sectional view of a horizontal virus-preserving fluid preparing apparatus;
FIG. 9 is a cross-sectional view of a horizontal virus-preserving fluid preparing apparatus;
the identifiers in fig. 1 to 9 are respectively: horizontal configuration bucket 1, configuration groove 11, (mixing) shaft 12, driving piece 13, top cap 14, feeder hopper 15, water inlet joint 16, preservation solution delivery port 17, assemble chamber 18, transfer bucket 2, feed inlet 21, discharge gate 22, filter frame 23, support 3, pipeline 4.
Description of the embodiments
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 9, a horizontal virus preservation solution configuration device comprises a horizontal configuration barrel 1, a transfer barrel 2, a bracket 3 and a conveying pipeline 4, wherein,
the horizontal configuration barrel 1 comprises a configuration groove 11, a stirring shaft 12, a driving piece 13, a top cover 14, a feed hopper 15, a water inlet joint 16 and a preservation solution conveying port 17, in particular,
the arrangement groove 11 is divided into two parts, including: a semi-cylindrical bottom layer and a square top layer, and the bottom layer is longer than the top layer, and staggered parts of the bottom layer and the top layer form a converging cavity 18.
The stirring shafts 12 are provided with a pair of stirring shafts, are arranged at intervals and parallel to the axial direction of the bottom layer, are arranged in the bottom layer of the arrangement groove 11, and can be used for stirring water and raw materials in the arrangement groove 11 in a forward rotation manner and conveying the preservation solution to the conveying converging cavity 18 in a reverse rotation manner, so that the preservation solution transferred to the transfer barrel 2 is further provided with conveying force.
In an embodiment, the screw is disposed at the periphery of the stirring shaft 12, so as to improve the force of filling the converging cavity 18 when the stirring shaft 12 is reversed. Preferably, the periphery of the auger is covered with LLDPE material to avoid corrosion of the stirring shaft 12 by the virus-preserving fluid.
The driving piece 13 is installed at the top of the converging cavity 18 and connected with the stirring shaft 12. In this embodiment, the driving member 13 includes a motor, three synchronizing wheels, and two synchronizing belts. The motor is mounted on top of the converging chamber 18. The rotation shafts of the two stirring shafts 12 extend to the outside of the configuration barrel. The three synchronizing wheels are respectively arranged on the rotating shaft of the motor and the stirring shaft 12, one of the synchronizing wheels is provided with two layers, one layer is connected with the synchronizing wheel of the stirring shaft 12 through a synchronous belt, and the other layer is connected with the synchronizing wheel of the motor through another synchronous belt.
The top cover 14 covers the top of the arrangement groove 11. The feed hopper 15 is mounted on the top cover 14. The water inlet joint 16 is communicated with the top layer of the configuration groove 11. The preservation solution delivery port 17 is arranged at the bottom of the horizontal configuration barrel 1 and is close to the end of the converging cavity 18.
The transfer barrel 2 is provided with a feed inlet 21 and a discharge outlet 22. In this embodiment, the transfer barrel 2 has two, can dock two filling lines, is equipped with the peristaltic pump of connecting transfer barrel 2 discharge gate 22 on the filling line, can carry the virus preservation liquid that has aggressiveness, simultaneously, the delivery volume precision is high.
In an embodiment, the outlet 22 of the transfer drum 2 is located above the inlet 21. A filter frame 23 is arranged in the transfer barrel 2. The filter frame 23 is installed between the feed inlet 21 and the discharge outlet 22. When in use, the preservation solution enters from the feed inlet 21 of the transfer barrel 2, is filtered by the filter frame 23, and is discharged from the discharge outlet 22 of the transfer barrel 2. According to the utility model, the discharge hole 22 is arranged above the feed hole 21, so that impurities on the filter screen can be pushed away in the upward surging process of water, and the impurities are deposited to the bottom of the transfer barrel 2 through gravity, so that the impurities in the preservation solution can be prevented from being blocked on the filter screen.
Further, the feed inlet 21 and the discharge outlet 22 of the transfer barrel 2 are both provided with tee joints. The other two interfaces of the three-way joint of the feed inlet 21 are respectively used for receiving the waste liquid collection box and the conveying pipeline 4. The other two interfaces of the three-way joint of the discharge port 22 are respectively butted with a tank line and a cleaning water source. Each three-way joint is provided with an electric control valve, and the communication of any two interfaces can be switched and the communication of three interfaces can be completely blocked. When the whole device is cleaned, the feeding port 21 of the transfer barrel 2 is communicated with the waste liquid collecting box, the discharging port 22 of the transfer barrel 2 is communicated with a cleaning water source, the transfer barrel 2 is guided by clean water, the inner wall of the transfer barrel 2 is cleaned, meanwhile, a filter screen can be flushed, and the cleaned water is discharged into the waste liquid collecting box.
The support 3 supports the horizontal configuration barrel 1, and the preservation solution conveying port 17 of the horizontal configuration barrel 1 is higher than the transfer barrel 2, so that virus preservation solution can be conveyed into the transfer barrel 2 by using weight. In other embodiments, the horizontal barrel 1 is obliquely installed through the bracket 3, and the preservation solution delivery port 17 is positioned at the lower end, so that the virus preservation solution is completely discharged.
The conveying pipeline 4 is connected with a preservation liquid conveying port 17 of the horizontal configuration barrel 1 and the transfer barrel 2, and a feeding port 21 is formed. Preferably, the terminal end of the conveying pipeline 4 is also provided with a three-way joint, and the two joints of the three-way joint are respectively used for receiving the waste liquid collecting box and the sewer. The three-way joint of the conveying pipeline 4 is also provided with an electric control valve.
The utility model can reduce the height of the configuration barrel by arranging the horizontal configuration barrel, thereby solving the problem that the configuration barrel without a pump is too high and avoiding the inconvenience of adding and cleaning the raw materials by operators. Meanwhile, the horizontal configuration barrel 1 is divided into two layers, the bottom layer is longer, a converging cavity 18 is formed, and the stirring shaft 12 is arranged, so that raw materials can be stirred, preservation liquid can be filled into the converging cavity 18, and further power is provided for the discharge of the preservation liquid.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the utility model are adopted, all within the scope of the utility model.
Claims (10)
1. The horizontal virus preservation solution configuration device is characterized by comprising a horizontal configuration barrel, a transfer barrel, a bracket and a conveying pipeline;
the horizontal configuration barrel comprises a configuration groove, a stirring shaft, a driving piece, a top cover, a feeding hopper, a water inlet joint and a preservation liquid conveying port; the configuration groove is divided into two parts: a semi-cylindrical bottom layer and a square top layer, wherein the length of the bottom layer is longer than that of the top layer, and staggered parts of the bottom layer and the top layer form a converging cavity; the stirring shafts are arranged in a pair at intervals and parallel to the axial direction of the bottom layer and are arranged in the bottom layer of the configuration groove; the driving piece is arranged at the top of the converging cavity and connected with the stirring shaft; the top cover covers the top of the configuration groove; the feed hopper is arranged on the top cover; the water inlet connector is communicated with the top layer of the configuration groove; the preservation liquid conveying port is arranged at the bottom of the horizontal configuration barrel and is close to the end part of the converging cavity;
the transfer barrel is provided with a feed inlet and a discharge outlet; at least one of the transfer barrels;
the bracket supports the horizontal configuration barrel, and a preservation liquid conveying port of the horizontal configuration barrel is higher than the transfer barrel;
the conveying pipeline is connected with a preservation liquid conveying port of the horizontal configuration barrel and a feeding port of the transfer barrel.
2. The horizontal virus preserving fluid preparing apparatus according to claim 1, wherein the horizontal preparing barrel is installed obliquely by a bracket, and the preserving fluid delivering port is located at a lower end.
3. The horizontal virus preservation solution preparing apparatus according to claim 1, wherein a packing auger is provided at a peripheral portion of the stirring shaft.
4. A horizontal virus preservation solution distribution apparatus according to claim 3 wherein the peripheral portion of the auger is covered with a LLDPE material.
5. The horizontal virus preservation solution preparing device according to claim 1, wherein the discharge port of the transfer barrel is positioned above the feed port; a filter frame is arranged in the transfer barrel; the filter frame is arranged between the feed inlet and the discharge outlet.
6. The horizontal virus preservation solution configuration device according to claim 5, wherein the feed inlet and the discharge outlet of the transfer barrel are provided with three-way connectors; the other two interfaces of the three-way joint of the feed inlet respectively receive the waste liquid collecting box and the conveying pipeline; the other two interfaces of the three-way joint of the discharge port are respectively butted with a tank assembly line and a cleaning water source; and each three-way joint is provided with a valve.
7. The horizontal virus preservation solution preparing apparatus according to claim 6, wherein the terminal end of the conveying pipeline is also provided with a three-way joint, and two joints thereof respectively receive the waste liquid collecting tank and the sewer; the three-way joint of the conveying pipeline is also provided with a valve.
8. The horizontal virus preservation solution preparing apparatus according to claim 7, wherein the valves of the three-way connectors are all electric control valves.
9. The horizontal virus preservation solution preparing device according to claim 1, wherein the driving member comprises a motor, three synchronous wheels and two synchronous belts; the motor is arranged at the top of the converging cavity; the rotating shafts of the two stirring shafts extend to the outside of the configuration barrel; the three synchronizing wheels are respectively arranged on the rotating shaft and the stirring shaft of the motor, one of the synchronizing wheels is provided with two layers, one layer is connected with the synchronizing wheel of the stirring shaft through a synchronous belt, and the other layer is connected with the synchronizing wheel of the motor through another synchronous belt.
10. The horizontal virus preservation solution preparing device according to claim 1, wherein the water inlet joint of the horizontal preparing barrel is connected with tap water through a secondary reverse osmosis purified water device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223168741.XU CN219209594U (en) | 2022-11-29 | 2022-11-29 | Horizontal virus preservation solution configuration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223168741.XU CN219209594U (en) | 2022-11-29 | 2022-11-29 | Horizontal virus preservation solution configuration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219209594U true CN219209594U (en) | 2023-06-20 |
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ID=86754480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223168741.XU Active CN219209594U (en) | 2022-11-29 | 2022-11-29 | Horizontal virus preservation solution configuration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219209594U (en) |
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2022
- 2022-11-29 CN CN202223168741.XU patent/CN219209594U/en active Active
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