CN214333134U - Scraper type ice particle instant preparation device - Google Patents
Scraper type ice particle instant preparation device Download PDFInfo
- Publication number
- CN214333134U CN214333134U CN202120312468.XU CN202120312468U CN214333134U CN 214333134 U CN214333134 U CN 214333134U CN 202120312468 U CN202120312468 U CN 202120312468U CN 214333134 U CN214333134 U CN 214333134U
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- Prior art keywords
- ice
- cavity
- ice forming
- icing
- forming cavity
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- 239000002245 particle Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000005057 refrigeration Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 230000001276 controlling effect Effects 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
Images
Abstract
The utility model belongs to the technical field of the gaseous efflux of ice particle, specifically disclose an instant preparation facilities of blade formula ice particle, including refrigerating system, the icing system that links to each other with refrigerating system, be equipped with the liquid drop generater on the icing system, the icing system is equipped with power component, the icing system includes the icing chamber, icing chamber top is equipped with the roof, and the bottom is equipped with the collecting vessel, icing chamber axle center position is equipped with a rotation axis, and the blade has been cup jointed in the activity on the rotation axis, blade both sides edge extends to icing intracavity lateral wall, icing chamber lateral wall is two-layer the clamp cover structure that has the cavity, and the cavity that presss from both sides between the cover is the liquid nitrogen chamber, the liquid drop generater includes a plurality of needle tubing components of upper and lower parallel arrangement, and this equipment principle is simple, and the cost is lower, and is lower to the equipment requirement, and the hardness and the particle diameter that steerable ice particle formed.
Description
Technical Field
The utility model belongs to the technical field of the gaseous efflux of ice particle, especially, relate to a scraper formula ice particle prepares device immediately.
Background
The ice particle jet flow is an environment-protecting and clean new surface treatment technology, it belongs to a kind of sand-blasting and paint-removing method, and uses ice particles to replace traditional abrasive material, and under the drive of high-speed fluid the formed high-speed ice particle flow can be formed, and the ice particles can be driven by high-speed air flow and can impact the surface to be processed so as to implement the work of removing paint and rust on the surface.
For the ice particle jet flow, the erosion performance is determined for the surface treatment effect of the ice particle jet flow, and the key factor influencing the erosion performance is the physical and mechanical properties of the ice particles in the jet flow, so that the preparation of proper ice particles is the premise of improving the erosion effect of the ice particle jet flow. The currently adopted method for instantly preparing ice particles in ice particle gas jet mainly comprises a refrigerant direct contact method, a vacuum rapid cooling method, a physical ice block crushing method and a dynamic supercooled water icing method. The methods have the major defects that the hardness of ice particles formed by the direct contact type ice making method is low, the ice particles are easy to bond, and the preparation effect of the ice particles cannot achieve the expected effect. The ice particles prepared by the vacuum rapid cooling method are seriously bonded, and the practicability is poor. The physical crushing method of the ice blocks has large and irregular volume and serious adhesion among ice particles, and the generated ice particles are frequently provided with edges and corners and easily cause damage to organisms. The ice particles formed by the supercooling method have low generation rate and high requirement on equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an instant preparation facilities of blade formula ice grain, this equipment principle is simple, and the cost is lower, and is lower to the equipment requirement, and hardness and the particle diameter that steerable ice grain formed.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a scraper type ice particle instant preparation device comprises a refrigeration system and an ice forming system connected with the refrigeration system, wherein a liquid drop generator is arranged on the ice forming system, the ice forming system is provided with a power assembly, the ice forming system comprises an ice forming cavity, the top of the ice forming cavity is provided with a top plate, the bottom of the ice forming cavity is provided with a collecting barrel, a rotating shaft is arranged at the axis position of the ice forming cavity, blades are movably sleeved on the rotating shaft, two side edges of the blades extend to the inner side wall of the ice forming cavity, the side wall of the ice forming cavity is of a two-layer jacket structure with a cavity, the cavity between the jackets is a liquid nitrogen cavity, the liquid drop generator comprises a plurality of needle tube components which are arranged in parallel up and down, each needle tube component penetrates through the side wall of the ice forming cavity and is fixedly connected with the inner side wall of the ice forming cavity through a hoop, each needle tube component comprises a needle head, a plunger shaft fixedly connected with the needle head and a needle tube positioned outside the plunger shaft, and a vacuum cavity is arranged between the inner wall of the needle tube and the plunger shaft, the plunger shaft is in a hollow tubular shape, the tail part of each plunger shaft is provided with a pipeline, and the pipelines are fixedly connected with a water outlet pipe of the water supply tank through a main pipeline.
Furthermore, the refrigerating system comprises a liquid nitrogen tank which is communicated with a liquid nitrogen cavity on the side wall of the icing cavity through an outlet pipeline.
Further, the power assembly comprises a motor, and an output shaft of the motor is fixedly connected with the rotating shaft.
Further, the side wall of the ice forming cavity comprises an inner wall surface and an outer wall surface, the liquid nitrogen cavity is located between the inner wall surface and the outer wall surface, the inner wall surface is made of a high-heat-conduction substrate, the outer side of the outer wall surface is further provided with a layer of heat preservation cotton, an air valve and a temperature sensor are further arranged on the upper portion of the side wall of the ice forming cavity, the other end of the temperature sensor is provided with a temperature sensor display, the side wall of the ice forming cavity is provided with a plurality of reserved holes, and the needle tube component is communicated with the inside of the ice forming cavity through the reserved holes.
Furthermore, a flow meter and a switch are arranged on an outlet pipeline of the liquid nitrogen tank, a power switch and a gear meter are also arranged on the motor, and a pressure pulse instrument, a flow meter and a switch are arranged on a water outlet pipeline of the water supply tank.
Furthermore, a gasket and a sealing cover are arranged between the vacuum cavity and the plunger shaft.
A method for preparing blade type ice particles in real time comprises the following steps:
(1) preparing needle heads and blades with different specifications according to the diameter of ice particles to be prepared, connecting the needle heads with the needle tubes, placing the needle heads and the needle tubes into the reserved holes of the ice forming cavity, and sealing completely;
(2) taking out a top cover connected with the rotating shaft, connecting the prepared blade to the rotating shaft, and placing a collecting barrel at the lower end of the ice forming system at the bottom of the ice forming system;
(3) adjusting an air valve on the ice forming system, enabling an outlet of the air valve to minimally open a switch of a temperature sensor and a liquid nitrogen inlet valve, and opening a pressure pulse instrument switch of a water supply tank and a switch of the water supply tank when the reading of the temperature sensor is observed to be-100 ℃, so as to adjust a flow valve of the water supply tank;
(4) when the water supply tank operates normally, a switch of the motor is turned on, the rotating speed is adjusted to the minimum value, ice particles formed on the inner wall surface of the ice forming cavity fall into a collecting barrel of the ice forming system under the action of a blade, the collecting small barrel can also be directly removed, and an ejector is placed to directly utilize the immediately prepared ice particles to form ice particle jet flow;
(5) when the equipment is closed, firstly stopping the switch of the water supply tank and the switch of the pressure pulse instrument, then closing an inlet valve of liquid nitrogen, and when the reading of the inlet flow of the liquid nitrogen is 0, closing the motor, and stopping the whole device;
(6) and (3) if ice particles with different particle sizes are required to be prepared, taking needles with different specifications to repeat the steps (1) to (5), and increasing the temperature and the hardness of the ice particles by increasing the flow of liquid nitrogen and reducing the rotating speed of a rotating machine.
The utility model has the advantages that:
1. the utility model provides an use ice particle to prepare new method immediately, this equipment principle is simple, and the cost is lower, and is lower to the equipment requirement, and the hardness and the particle diameter that the steerable ice particle formed, adopt the formation and the collecting system of straight conical ice particle, avoided the bonding problem in the ice particle formation process, adopt high heat conduction base plate as the support that the liquid drop becomes ice, avoid the waste of more refrigerants, reduced the time that the ice particle formed, greatly reduced the consumption to the refrigerant, improved the formation rate and the ice particle quality of ice particle;
2. the distribution mode of the ice particles prepared by the device can be adjusted according to the structure of an ice forming system, and can also be automatically regulated according to the distribution mode of the liquid drop generator, so that the problem of ice particle adhesion generated by generating the ice particles by a direct contact method of a refrigerant is avoided;
3. the utility model discloses a control of ice particle hardness and temperature can control the temperature of icing system through the size of regulation and control gas outlet pneumatic valve, and the speed that drops of ice particle can be realized to the rotational speed of control rotary machine, and then realizes the control to the ice particle temperature.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic drawing showing a cross-sectional detail of the connection of the needle cannula member to the ice formation system.
1-a liquid nitrogen tank; 2-an electric motor; 3-a gear meter; 4-a switch; 5-an ice forming cavity; 6-a flow meter; 7-water supply tank; 8-a drop generator; 9-a pressure pulse meter; 12-a needle tube; 14-temperature sensing display; 15-air valve; 16-a temperature sensor; 17-a top plate; 18-a rotating shaft; 19-a blade; 20-a collection barrel; 21-a clamp; 22-a needle head; 24-liquid nitrogen chamber; 25-inner wall surface; 26-outer wall surface; 27-heat preservation cotton; 28-vacuum chamber; 29-a sealing cover; 30-a gasket; 31-pipeline.
Detailed Description
As shown in the figure, the scraper type ice particle instant preparation device comprises a refrigeration system and an ice forming system connected with the refrigeration system, wherein a liquid drop generator 8 is arranged on the ice forming system, the ice forming system is provided with a power assembly, the ice forming system comprises an ice forming cavity 5, the top of the ice forming cavity 5 is provided with a top plate 17, the bottom of the ice forming cavity is provided with a collecting barrel 20, the axis position of the ice forming cavity 5 is provided with a rotating shaft 18, a blade 19 is movably sleeved on the rotating shaft 18, the edges of two sides of the blade 19 extend to the inner side wall of the ice forming cavity 5, the side wall of the ice forming cavity 5 is of a two-layer jacket structure with cavities, the cavity between the jackets is a liquid nitrogen cavity 24, the liquid drop generator 8 comprises a plurality of needle tube components which are arranged in parallel up and down, each needle tube component penetrates through the side wall of the ice forming cavity and is fixedly connected with the inner side wall of the ice forming cavity 5 through the jacket 21, each needle tube component comprises a needle 22, with syringe needle 22 fixed connection's plunger shaft and be located the needle tubing 12 of plunger off-axis, be equipped with vacuum cavity 28 between needle tubing 12 inner wall and the plunger shaft, the plunger shaft is hollow tubulose, and every plunger shaft afterbody is equipped with a pipeline 31, and a plurality of pipelines 31 are through a main pipeline and feed water tank 7 outlet pipe fixed connection, refrigerating system includes liquid nitrogen container 1, and liquid nitrogen container 1 is linked together through the liquid nitrogen chamber 24 of export pipeline with the 5 lateral walls in chamber that becomes ice, power component includes motor 2, motor 2's output shaft and rotation axis 18 fixed connection.
Further, the 5 lateral walls in icing chamber include internal face 25 and outer wall 26, and liquid nitrogen chamber 24 is located between internal face 25 and the outer wall 26, and internal face 25 material is the high heat conduction base plate, and the outer wall 26 outside still is equipped with one deck heat preservation cotton 27, and 5 lateral wall upper portions in icing chamber still are equipped with pneumatic valve 15 and temperature sensor 1, and the temperature sensor 16 other end is equipped with temperature sensor display 14, and 5 lateral walls in icing chamber are equipped with a plurality of preformed holes, and the needle tubing component passes through preformed hole and the inside UNICOM in icing chamber, be equipped with flowmeter 6 and switch 4 on the outlet pipe of liquid nitrogen container 1, motor 2 also is equipped with switch and gear meter 3, be equipped with pressure pulse appearance 9, flowmeter and switch on the delivery conduit of feed water tank 7, be equipped with packing ring 30 and sealed lid 29 between vacuum chamber and the plunger shaft.
When the device is used specifically, the amount of cold required by the ice formation system is provided by the liquid nitrogen tank 1, the amount of nitrogen entering the ice formation cavity is controlled by controlling the opening and closing of the liquid nitrogen tank 1, the flow meter in the same branch with the liquid nitrogen tank is used for observing the input amount of liquid nitrogen, the nitrogen entering the ice formation system for phase change heat exchange is discharged by the air valve, the temperature of the ice formation system is regulated and controlled by regulating and controlling the size of the outlet of the air valve and the size of the liquid nitrogen inlet valve, the temperature sensor 16 directly contacted with the inner wall surface of the ice formation cavity is arranged above the air valve, the other end of the temperature sensor 16 is connected with the temperature sensing display 14 and can directly read the wall surface temperature of the ice formation system, the pipeline connected with the temperature sensor is provided with a valve for controlling and displaying the opening and closing of the temperature sensor, the liquid drop generator 8 connected with the water supply tank is arranged below the air valve 15, the liquid drop generator 8 is generated by adopting replaceable needles 22 with different particle sizes, the needle 22 adopts different specification grain diameters to realize the control of the grain diameter of the liquid drop, the liquid drop generator 8 is directly embedded with the aperture of a middle hole formed by an ice forming system, the bottom of the liquid drop generator 8 is provided with a clamp 21 which is directly contacted with the wall surface and is prevented from falling off, the liquid drop generator 8 is connected with the inner wall surface of the ice forming system, the liquid drop generator 8 is provided with a vacuum cavity 28 which is subjected to vacuum treatment and is prevented from freezing in a low-temperature environment, the tail end of the liquid drop generator is provided with a gasket 30 and a sealing cover 29, a pipeline 31 is directly connected with a branch of a water supply box, a main pipeline which is gathered by a plurality of branches is provided with a switch for controlling the water supply and a flow valve for displaying the flow of a water supply main pipeline, a pulse pressure instrument 9 for controlling the formation of the liquid drop is also directly connected with the water supply box 7, a rotating shaft 18 connected with the motor 2 is arranged in the hollow cavity of the ice forming system, and a gear meter for controlling the switch of the motor and the rotating speed of the motor is arranged on the circuit connected with the motor, the rotating shaft 18 is directly connected with the blade 19, wherein the blade 19 is directly tangent with the inner chamber of the ice forming system and is used for treating ice particles formed on the wall surface, the bottom of the ice forming system is connected with a detachable collecting bucket 20 for collecting the ice particles, a detachable top cover 17 is arranged above the ice forming system, and heat insulation cotton 27 for preventing the loss of cold energy is arranged outside the ice forming system.
The utility model discloses even preparation of ice particle in the device production ice particle gas jet includes following specific step:
(1) the prepared raw water is added into the water supply tank 7, the liquid nitrogen tank 1 is prepared to be connected with the ice forming system, and the connection condition of the whole device is checked to ensure that the connection is correct.
(2) According to the diameter of ice particles to be prepared, needles 22 with different specifications and an undamaged blade 19 matched with the connecting shaft rotary rod 18 are prepared, the prepared needle 22 is connected with the tail end of the liquid drop generator 19, and the prepared needle is placed in a reserved hole of an ice forming cavity to be completely sealed.
(3) The top cover 17 connected to the rotary lever 18 is removed, the prepared nondestructive blade 19 is attached to the rotary shaft 18, and the collecting tub 20 at the lower end of the ice-forming system is placed at the bottom of the ice-forming system.
(4) Connecting the ready-made rotating shaft 18 with an external motor 2, adjusting an outlet air valve 15 on the ice forming system to minimize an outlet of the air valve 15, and connecting the ready liquid nitrogen tank 1 with a liquid inlet of the ice forming system.
(5) The outlet valves of the liquid nitrogen tank 1 and the water supply tank 7 were checked, and the connectivity of the entire apparatus was checked.
(6) Opening a switch 13 of the temperature sensor and a liquid nitrogen inlet valve, observing the indication number of the temperature sensor 14, and opening a pulse switch 9 of the water supply tank and a switch 11 of the water supply tank when the temperature is-100 ℃, so as to adjust the flow valve of the water supply tank.
(7) When the water supply tank operates normally, the switch 4 of the motor is turned on, the rotating speed of the rotating machine 3 is adjusted to the minimum value, ice particles formed on the substrate fall into a collecting system 20 of an ice forming system under the action of the blade 19, the collecting barrel can also be directly removed, and an ejector is placed to directly utilize the ice particles prepared immediately to form ice particle jet flow.
(8) After ice particles with certain particle size and flow are prepared, firstly stopping a switch 14 and pulse operation 9 of a water supply tank, then closing an inlet valve of liquid nitrogen, observing that the inlet flow index of the liquid nitrogen is 0, finally closing a motor 2, taking down ice particle small barrels collected at the bottom of an ice forming system by using low-temperature-resistant protective gloves after the whole device stops working, and observing the condition of the prepared ice particles.
(9) If the required particle sizes of the ice particles are different, taking needles with different specifications to repeat the steps (2) - (8), and increasing the temperature and the hardness of the ice particles by increasing the flow of liquid nitrogen and reducing the rotating speed of a rotating machine.
The utility model provides an use ice particle to prepare new method immediately, this equipment principle is simple, the cost is lower, it is lower to the equipment requirement, and hardness and particle diameter that steerable ice particle formed, adopt formation and the collecting system of straight conical ice particle, the bonding problem of ice particle formation in-process has been avoided, adopt the high heat conduction base plate to become the support of ice as the liquid drop, avoid the waste of more refrigerants, the time of ice particle formation has been reduced, greatly reduced expend to the refrigerant, the formation rate and the ice particle quality of ice particle have been improved.
Claims (5)
1. A scraper type ice particle instant preparation device is characterized in that: the device comprises a refrigeration system and an ice forming system connected with the refrigeration system, wherein a liquid drop generator is arranged on the ice forming system, a power assembly is arranged on the ice forming system, the ice forming system comprises an ice forming cavity, a top plate is arranged at the top of the ice forming cavity, a collecting barrel is arranged at the bottom of the ice forming cavity, a rotating shaft is arranged at the axis position of the ice forming cavity, a blade is movably sleeved on the rotating shaft, two side edges of the blade extend to the inner side wall of the ice forming cavity, the side wall of the ice forming cavity is of a two-layer jacket structure with a cavity, the cavity between the jackets is a liquid nitrogen cavity, the liquid drop generator comprises a plurality of needle tube components which are arranged in parallel up and down, each needle tube component penetrates through the side wall of the ice forming cavity and is fixedly connected with the inner side wall of the ice forming cavity through a hoop, each needle tube component comprises a needle head, a plunger shaft fixedly connected with the needle head and a needle tube positioned outside the plunger shaft, and a vacuum cavity is arranged between the inner wall of the needle tube and the plunger shaft, the plunger shaft is hollow tubular, a pipeline is arranged at the tail of each plunger shaft, a plurality of pipelines are fixedly connected with a water outlet pipe of the water supply tank through a main pipeline, the refrigerating system comprises a liquid nitrogen tank, and the liquid nitrogen tank is communicated with a liquid nitrogen cavity of the side wall of the icing cavity through an outlet pipeline.
2. The doctor blade type ice instant preparation apparatus as claimed in claim 1, wherein: the power assembly comprises a motor, and an output shaft of the motor is fixedly connected with the rotating shaft.
3. The doctor blade type ice instant preparation apparatus as claimed in claim 2, wherein: the side wall of the ice forming cavity comprises an inner wall surface and an outer wall surface, the liquid nitrogen cavity is located between the inner wall surface and the outer wall surface, the inner wall surface is made of a high-heat-conduction substrate, the outer side of the outer wall surface is further provided with a layer of heat preservation cotton, an air valve and a temperature sensor are further arranged on the upper portion of the side wall of the ice forming cavity, the other end of the temperature sensor is provided with a temperature sensor displayer, the side wall of the ice forming cavity is provided with a plurality of preformed holes, and the needle tube component is communicated with the inside of the ice forming cavity through the preformed holes.
4. The doctor blade type ice instant preparation apparatus as claimed in claim 3, wherein: and a flow meter and a switch are arranged on an outlet pipeline of the liquid nitrogen tank, a power switch and a gear meter are also arranged on the motor, and a pressure pulse instrument, the flow meter and the switch are arranged on an outlet pipeline of the water supply tank.
5. The doctor blade type ice instant preparation apparatus as claimed in claim 4, wherein: and a gasket and a sealing cover are arranged between the vacuum cavity and the plunger shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312468.XU CN214333134U (en) | 2021-02-04 | 2021-02-04 | Scraper type ice particle instant preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312468.XU CN214333134U (en) | 2021-02-04 | 2021-02-04 | Scraper type ice particle instant preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214333134U true CN214333134U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120312468.XU Expired - Fee Related CN214333134U (en) | 2021-02-04 | 2021-02-04 | Scraper type ice particle instant preparation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214333134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856879A (en) * | 2021-02-04 | 2021-05-28 | 河南理工大学 | Scraper type ice particle instant preparation device and method |
-
2021
- 2021-02-04 CN CN202120312468.XU patent/CN214333134U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856879A (en) * | 2021-02-04 | 2021-05-28 | 河南理工大学 | Scraper type ice particle instant preparation device and method |
| CN112856879B (en) * | 2021-02-04 | 2022-04-12 | 河南理工大学 | Scraper type ice particle instant preparation device and method |
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|---|---|---|---|
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211001 |
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| CF01 | Termination of patent right due to non-payment of annual fee |