CN115400666A - Polymer pneumatic stirring device for shield machine - Google Patents
Polymer pneumatic stirring device for shield machine Download PDFInfo
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- CN115400666A CN115400666A CN202210920811.8A CN202210920811A CN115400666A CN 115400666 A CN115400666 A CN 115400666A CN 202210920811 A CN202210920811 A CN 202210920811A CN 115400666 A CN115400666 A CN 115400666A
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- polymer
- polymer solution
- shield
- mixing box
- stirring device
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- Pending
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- 229920000642 polymer Polymers 0.000 title claims abstract description 75
- 238000003756 stirring Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000005641 tunneling Effects 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 210000003437 trachea Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 22
- 239000003607 modifier Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000008674 spewing Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/822—Combinations of dissimilar mixers with moving and non-moving stirring devices in the same receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/10—Dissolving using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/20—Dissolving using flow mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/60—Pump mixers, i.e. mixing within a pump
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/402—Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/405—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle
- B01F33/4051—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle with vertical conduits through which the material is being moved upwardly driven by the fluid
- B01F33/40512—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle with vertical conduits through which the material is being moved upwardly driven by the fluid involving gas diffusers at the bottom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/321—Disposition of the drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/7544—Discharge mechanisms characterised by the means for discharging the components from the mixer using pumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a polymer pneumatic stirring device for a shield machine, which comprises a stirring box, wherein a water inlet is formed in the upper part of the stirring box, a water outlet is formed in the bottom of the stirring box, a vertical submerged pump is installed in the middle of the top of the stirring box through channel steel, a liquid outlet under the vertical submerged pump is connected with a polymer solution conveying pipe, a polymer solution which is stirred is pumped to the polymer solution conveying pipe through rotation of an impeller at the bottom of the vertical submerged pump, an air pipe is coiled at the bottom of the stirring box, and air holes are formed in the top of the air pipe at intervals. The polymer solution muck modifier is simple to manufacture, small in size, convenient to operate and low in cost, can be used in cooperation with a shield tunneling machine system, and can be used for efficiently providing the polymer solution muck modifier in shield construction.
Description
Technical Field
The invention relates to a polymer stirring device, in particular to a pneumatic stirring device for a polymer solution muck modifier for shield construction.
Background
With the increasing wide application of the shield tunnel construction technology, the phenomenon that the shield construction penetrates through complex stratums is inevitably generated. When the shield machine is used for construction of ground layers such as silt, silt and liquefied soil layers with high water content and high fluidity, construction risks such as screw machine spewing, unstable soil pressure control and over-standard ground surface settlement value easily occur, and meanwhile, the construction efficiency is greatly reduced. In order to solve the problem, the soil residue on the working face of the cutter head and in the soil bin needs to be improved. In some of the above-mentioned complicated formations, the conventional muck modifier water, foaming agent, bentonite solution sometimes have difficulty in exerting an effective action. The high molecular polymer solution can be linked with micro particles in mixed muck to form flocculent aggregates among soil particles, so that the flocculent aggregates are bonded, an internal friction angle can be reduced, the viscosity of the muck is increased, the muck has good pumpability, and the high molecular polymer solution has a good improvement effect in the stratum with high water content and strong fluidity, such as silt, liquefied soil layers and the like, thereby being increasingly widely applied to shield construction.
Compared with polymer particles, the finished polymer solution has the advantages of short effective period, larger storage occupation area, higher transportation cost and incapability of automatically proportioning concentration according to actual construction requirements. Therefore, the polymer particles are purchased, and then the polymer solution is mixed at the construction site according to the construction requirements, so that the requirement of actual construction of the shield can be further met. At present, most of common polymer stirring devices are in a mechanical stirring mode, stirring equipment is complex, the cost is high, and the polymer stirring devices cannot be matched with a shield tunneling machine system for use. Therefore, a polymer stirring device which is simple to manufacture, small in size, convenient to operate, low in cost and capable of being matched with a shield tunneling machine system for use needs to be designed.
Disclosure of Invention
In order to solve the problems, the invention provides a polymer pneumatic stirring device for a shield machine.
The invention is realized by the following technical scheme:
the utility model provides a polymer pneumatic stirring device for shield constructs machine, includes the mix box, mix box upper portion sets up the water inlet, and the bottom sets up the outlet, through the vertical submerged pump of channel-section steel installation in the middle of the mix box top, polymer solution conveyer pipe is connected to the liquid outlet under the vertical submerged pump, rotates the polymer solution to the polymer solution conveyer pipe that the pumping stirring was accomplished through vertical submerged pump bottom impeller, mix box bottom portion coils the trachea, and trachea top interval certain distance sets up the gas pocket.
Further, the mixing box has the diameter of 1.2m, the height of 1.5m and the volume of 1.7m 3 The size and the volume of the mixing box can be adjusted according to actual requirements.
Furthermore, a graduated rod is installed on the side wall inside the mixing box.
Furthermore, the scale rod adopts reinforcing steel bars with the length of 20cm and the diameter of 20mm to be respectively welded at 0.5m of the mixing box 3 、1.0m 3 、1.5m 3 The inner wall of the containment location is used to gauge the volume of water or polymer solution.
Furthermore, one end of the air pipe is led out from an air compressor of the shield tunneling machine and then connected to the bottom of the mixing box, and the end of the air pipe at the bottom of the mixing box is sealed.
Further, the air pipes are coiled from outside to inside at the bottom of the mixing box for 3-4 circles, a certain distance is reserved between every two circles of air pipes, the air pipes are fixed by steel buckles welded on the inner wall of the mixing box, and the distance between the air pipes and the distance between the air holes are determined according to actual needs; during pneumatic stirring, open shield structure machine air compressor machine branch road valve, pressure gas passes through the individual gas pocket blowout at trachea top, and the intensive bubble crowd of spun gas formation in aqueous, and the bubble crowd receives the effect of buoyancy and constantly overturns upwards, and this process polymer granule constantly dissolves in water, has played the primary action of mixing system polymer solution.
Further, the idle position of supporting system platform truck behind the shield structure machine is placed to the mix box, utilizes the shield structure machine from the air compressor machine of taking as the gas generating device of pneumatic mixing system, need not additionally to set up gas generating device or set up mechanical mixing device.
Further, vertical submerged pump bottom impeller rotates the in-process of taking out polymer solution to the polymer solution conveyer pipe, and the impeller rotation can carry out the secondary mix with polymer solution, guarantees that polymer solution mix more evenly.
Compared with the prior art, the invention has the beneficial effects that:
the invention realizes the purpose that the polymer solution muck improver for shield construction can be mixed at any time when used, the stirring device is placed at an idle position of a trolley of a matching system behind the shield machine, a special mixing field is not required to be occupied, the polymer solution muck improver can synchronously move forward along with the shield machine in the construction process, and can be used as a part of a shield machine system, thereby greatly improving the shield construction efficiency.
The pneumatic stirring device realizes pneumatic stirring of the polymer solution, saves unnecessary labor compared with manual stirring, and simultaneously ensures the uniformity of the polymer solution and the quality of the polymer solution by the pneumatic stirring effect. Compared with a mechanical stirring device, the stirring box has the advantages that a special power source is not required to be arranged, an air compressor of the shield machine system is used, a stirring field is greatly saved, the whole stirring box system is small and exquisite, the manufacturing is simple, the operation is convenient, and the cost is low.
Drawings
FIG. 1 is a front view of a polymer pneumatic stirring apparatus of the present invention;
FIG. 2 is a cross-sectional view of a polymer pneumatic stirring apparatus of the present invention;
FIG. 3 is a schematic diagram of the wrapping of the bottom air tube of the mixing box of the present invention;
FIG. 4 is a schematic view of the mounting location of the upper vertical submerged pump of the mixing tank of the present invention;
in the figure: 1. a mixing box; 2. a water inlet; 3. channel steel; 4. a vertical submerged pump; 5. a polymer solution delivery pipe; 6. an air tube; 7. a water outlet; 8. a graduated rod; 9. air holes; 10. an impeller; 11. and (4) a steel buckle.
Detailed Description
The invention is described in further detail below with reference to the following figures and embodiments:
as shown in fig. 1 and 2, the polymer pneumatic stirring device for the shield tunneling machine of the present invention includes a mixing box 1, a water inlet 2, a channel steel 3 for mounting and fixing a vertical submerged pump, a vertical submerged pump 4, a polymer solution delivery pipe 5, an air pipe 6 for delivering pressurized air, a water outlet 7, a scale rod 8 on the inner wall of the mixing box, an air hole 9 of the air pipe, an impeller 10 at the bottom of the vertical submerged pump, and a steel buckle 11 for fixing the air pipe.
As shown in figure 2, one end of a polymer solution conveying pipe 5 is connected to a water outlet at the bottom of the vertical submerged pump 4, and the other end of the polymer solution conveying pipe is led to a shield tunneling machine muck modifier storage tank. The impeller 10 at the bottom of the vertical submerged pump 4 rotates continuously to pump the polymer solution to the polymer solution delivery pipe 5. The process has the secondary mixing effect of the polymer solution, and the uniformity of the polymer solution is further ensured.
As shown in figure 2, the graduated rod 8 is welded in a mixing box with the length of 20cm and the diameter of 20mm by using reinforcing steel bars respectively with the diameter of 10.5m 3 、1.0m 3 、1.5m 3 The inner wall of the volume.
As shown in figure 2, one end of the air pipe 6 is led out from an air compressor of the shield machine and then connected to the bottom of the mixing box 1 from the upper part of the mixing box 1, the end of the air pipe at the bottom of the mixing box 1 is sealed, and the pipe body of the air pipe 6 is welded on the inner wall of the mixing box 1 through a steel buckle 11 to play a role in fixing.
As shown in fig. 3, the vertical submerged pump 4 is installed at the central position of the mixing tank 1, the lower portion of the channel steel 3 is fixed to the mixing tank 1 by welding, and the upper portion of the channel steel 3 is fixed to the vertical submerged pump 4 with the position adjusted by welding.
As shown in figure 4, the air pipe 6 is coiled at the bottom of the mixing box 1 by taking a central point as a circle center, and the coiling radius is from large to small and is coiled for 3-4 circles. The air holes 9 are arranged on the pipe body of the air pipe 6 at intervals, and the directions of the holes of the air holes 9 are consistent and upward. The air pipe 6 is fixed between each air hole 9 through a steel buckle 11, and two support legs of the steel buckle 11 are welded on the inner wall of the mixing box 1.
When the mixing tank is used, an operator opens the clean water valve, clean water is injected into the mixing tank 1 through the water inlet 2, the scale rod 8 is observed, and tap water is injected to 1.5m 3 Then closing a tap water valve, opening an air compressor branch valve for air mixing, spraying pressure gas through air holes 9 on a pipe body of an air pipe 6, enabling the sprayed air bubbles to be continuously blown upwards under the action of buoyancy in water, then uniformly scattering polymer solid particles into a mixing box 1 according to the concentration and mixing ratio of a polymer solution prepared in advance, enabling the polymer solid particles to be continuously dissolved in the water in the process, observing the dissolution condition of the polymer solid particles in the mixing box 1, starting a vertical submerged pump 4 by an operator until the polymer solid particles are completely dissolved in the water, pumping the polymer solution to a polymer solution conveying pipe 5 through the rotation of an impeller 10 at the bottom of the vertical submerged pump 4, realizing secondary mixing of the polymer solution in the process, ensuring the uniformity of the polymer solution, and leading the other end of the polymer solution conveying pipe 5 to a shield tunneling machine muck modifier storage tank for shield construction.
In actual construction, an operator can flexibly master the demand of the polymer solution by combining the conditions of the stratum penetrated by the current shield machine, the propelling speed of the shield machine and the like, shield construction is matched to the maximum extent, the construction efficiency of the shield machine in complex strata with large water content such as silt, silt and liquefied soil layers is greatly improved, the construction safety quality risks such as screw machine spewing, unstable soil pressure control, overproof ground surface settlement value and the like which are easily caused when the shield machine is used for construction in the complex strata are reduced, and the construction efficiency of the shield machine in the complex strata is greatly improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be appreciated by those skilled in the art that while the present invention has been described in terms of its preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications within the spirit and scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a polymer pneumatic stirring device for shield constructs machine, includes mix case (1), mix case (1) upper portion sets up water inlet (2), and the bottom sets up outlet (7), its characterized in that: vertical submerged pump (4) is installed through channel-section steel (3) in the middle of the mix tank top, polymer solution conveyer pipe (5) is connected to the liquid outlet under the vertical submerged pump, rotates through vertical submerged pump (4) bottom impeller (10) and pumps the polymer solution to polymer solution conveyer pipe (5) that the stirring was accomplished, mix tank (1) bottom coils trachea (6), and trachea (6) top interval certain distance sets up gas pocket (9).
2. The polymer pneumatic stirring device for the shield tunneling machine of claim 1, wherein: the mixing box (1) has the diameter of 1.2m, the height of 1.5m and the volume of 1.7m 3 The size and the volume of the mixing box (1) can be adjusted according to actual requirements.
3. The polymer pneumatic stirring device for the shield tunneling machine according to claim 1, characterized in that: and a graduated rod (8) is arranged on the side wall in the mixing box (1).
4. The polymer pneumatic stirring device for the shield tunneling machine according to claim 3, characterized in that: the scale rod (8) is respectively welded by reinforcing steel bars with the length of 20cm and the diameter of 20mmIn the mixing box (1) of 0.5m 3 、1.0m 3 、1.5m 3 The inner wall of the containment location is used to gauge the volume of water or polymer solution.
5. The polymer pneumatic stirring device for the shield tunneling machine according to claim 1, characterized in that: one end of the air pipe (6) is led out from an air compressor of the shield tunneling machine and then connected to the bottom of the mixing box (1), and the end of the air pipe at the bottom of the mixing box (1) is sealed.
6. The polymer pneumatic stirring device for the shield tunneling machine of claim 1, wherein: the air pipes (6) are coiled from outside to inside at the bottom of the mixing box (1) for 3-4 circles, a certain distance is reserved between every two circles of air pipes (6), the air pipes (6) are fixed by steel buckles (11) welded on the inner wall of the mixing box (1), and the distance between the air pipes (6) and the distance between the air holes (9) are determined according to actual needs; during pneumatic stirring, open shield structure machine air compressor machine branch road valve, pressure gas passes through the individual gas pocket blowout at trachea top, and the intensive bubble crowd of spun gas formation in aqueous, and the bubble crowd receives the effect of buoyancy and constantly overturns upwards, and this process polymer granule constantly dissolves in water, has played the primary action of mixing system polymer solution.
7. The polymer pneumatic stirring device for the shield tunneling machine of claim 1, wherein: mixing box (1) is placed in the idle position of supporting system platform truck behind the shield constructs the machine, utilizes the shield to construct the machine from the air compressor machine of taking as pneumatic mixing system's gaseous generating device, need not additionally to set up gaseous generating device or set up mechanical mixing device.
8. The polymer pneumatic stirring device for the shield tunneling machine of claim 1, wherein: vertical submerged pump (4) bottom impeller (10) rotate and take out the in-process to polymer solution conveyer pipe (5) with polymer solution, and the impeller rotation can carry out the secondary mix with polymer solution, guarantees that polymer solution mix more evenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210920811.8A CN115400666A (en) | 2022-08-02 | 2022-08-02 | Polymer pneumatic stirring device for shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210920811.8A CN115400666A (en) | 2022-08-02 | 2022-08-02 | Polymer pneumatic stirring device for shield machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115400666A true CN115400666A (en) | 2022-11-29 |
Family
ID=84158664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210920811.8A Pending CN115400666A (en) | 2022-08-02 | 2022-08-02 | Polymer pneumatic stirring device for shield machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115400666A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806004A (en) * | 1972-01-24 | 1974-04-23 | Y Kolkovsky | Mixing and dispensing apparatus |
| CN105854720A (en) * | 2016-05-13 | 2016-08-17 | 共享铸钢有限公司 | Pneumatic stirring apparatus and preparation method of magnetic suspension |
| CN111944335A (en) * | 2020-07-24 | 2020-11-17 | 苏州波菲特新材料科技有限公司 | Vitrification agent, preparation method thereof and stirring device |
| CN113600073A (en) * | 2021-08-02 | 2021-11-05 | 中国科学院工程热物理研究所 | Solid state tracing particle generator |
-
2022
- 2022-08-02 CN CN202210920811.8A patent/CN115400666A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806004A (en) * | 1972-01-24 | 1974-04-23 | Y Kolkovsky | Mixing and dispensing apparatus |
| CN105854720A (en) * | 2016-05-13 | 2016-08-17 | 共享铸钢有限公司 | Pneumatic stirring apparatus and preparation method of magnetic suspension |
| CN111944335A (en) * | 2020-07-24 | 2020-11-17 | 苏州波菲特新材料科技有限公司 | Vitrification agent, preparation method thereof and stirring device |
| CN113600073A (en) * | 2021-08-02 | 2021-11-05 | 中国科学院工程热物理研究所 | Solid state tracing particle generator |
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Application publication date: 20221129 |