CN205146412U - Comminuted grading plant - Google Patents
Comminuted grading plant Download PDFInfo
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- CN205146412U CN205146412U CN201520961030.9U CN201520961030U CN205146412U CN 205146412 U CN205146412 U CN 205146412U CN 201520961030 U CN201520961030 U CN 201520961030U CN 205146412 U CN205146412 U CN 205146412U
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Abstract
The utility model provides a comminuted grading plant belongs to comminuted technical field. A comminuted grading plant, including feeding device, the reducing mechanism, inert gas circulation circuit, one -level gas - solid separator device, wind -force drive arrangement, second grade gas - solid separator device and dust arrester installation, feeding device is equipped with material import and insert gas inlet, the dust arrester installation sets up the inert gas export, inert gas circulation circuit will follow the inert gas that the dust arrester installation isolated and send into the reducing mechanism through the muffler, recycle inert gas, insert gas inlet passes through the gas -supply pipe and is connected with the air supply, set up pressure sensor and air -vent valve on the gas -supply pipe, one -level gas - solid separator device, the top of second grade gas - solid separator device and dust arrester installation do not is equipped with lets out the seam broken. The utility model discloses novel structure, reasonable in design, safe and reliable, easy operation can realize collecting multiple functions in an organic whole to the crushing, hierarchical of inflammable and explosive easy oxidation material and cooling, and the practicality is strong.
Description
Technical field
The utility model belongs to crushing material technical field, is specifically related to a kind of crushing material grading plant.
Background technology
The equipment of Flammable and Explosive Materials such as oxidant, combustible and explosive are at all fields of national economy and militarily have important purposes.Along with the development of science and technology, propose more and more higher requirement to the serviceability of these materials, wherein most typical is exactly require to carry out fine to these materials, because these materials its serviceability after fine can obtain very big raising.Because equipment of Flammable and Explosive Materials is easily decomposed usually, burning-point is lower, extremely responsive to heat, temperature, shock, friction, electrostatic and spark, therefore will make its fine, in technique and safety on very difficult.Common superfine grinding method be all take clash into, shear, friction, extruding method to make material fining, when taking these class methods to make equipment of Flammable and Explosive Materials fine, very easily make they occurs in crushing process burning or explode.Because the susceptibility of its burning thinner of this kind of material or blast is higher, production process is very dangerous.
For ensureing production safety, various countries engineers and technicians have carried out large quantity research to the superfine technique of this kind of material and equipment, and its difficulty is considerably beyond the pulverizing to common material.Under state-of-the art, above-mentioned material be made to realize fine, finally often adopt air-flow crushing, the high-pressure inert gas that adopts, as crushing medium, is also taked to combinationally use with low-temperature grinding more.Application number be 201010610587.X patent discloses a kind of protective gas sealing and circulating disintegrating apparatus and disintegrating process, the airtight setting of described disintegrating apparatus; Described disintegrating apparatus comprises: feeding device, reducing mechanism, gas-solid separating device, inert gas closed circuit; Described feeding device, reducing mechanism, gas-solid separating device connect successively; Gas in described reducing mechanism is the inert gas of high speed and high pressure; The inert gas be separated from gas-solid separating device is sent into reducing mechanism by described inert gas closed circuit under the driving of wind drive unit, recycles inert gas.The protective gas sealing and circulating disintegrating apparatus that this utility model proposes and disintegrating process, the inflammable and explosive dangerous goods such as sulphur can be pulverized safely and efficiently, but also there is certain deficiency in it, because disintegrating apparatus is applicable to the pulverizing of flammable materials, in crushing process, although there is nitrogen protection, but the temperature of flammable materials still can because of collision, interaction forces such as friction and increasing, this equipment cannot realize the material after to pulverizing and carry out cooling process, and pulverizing adopts air-flow crushing, need the inert gas of high speed and high pressure as crushing medium, energy consumption is high, safety coefficient is low, manipulation difficulty is large.Application number be 201410144244.7 patent discloses a kind of micronizer cooled with liquid nitrogen device, comprise the liquid nitrogen container that liquid nitrogen is housed and the vaporizer be connected with liquid nitrogen container, vaporizer is located in tank for coolant, vaporizer is provided with the nitrogen gas outlet passing to tank for coolant outside, cooling fluid is filled with in tank for coolant, cooler bin is also provided with temperature sensor, the output of tank for coolant is communicated with liquid circulation export pipeline, it is outside that liquid circulation pipeline portions is wound in micronizer cooler pan, the output of liquid circulation pipeline passes in tank for coolant, between liquid nitrogen container and vaporizer, liquid nitrogen pump is installed, liquid circulation export pipeline is provided with coolant pump, liquid nitrogen pump, coolant pump, temperature sensor is controlled by electric-control system.This utility model can reduce the temperature of micronizer crushing rear material, but its liquid nitrogen consumption is large, and function singleness, cannot carry out classification separation to material.
Utility model content
Technical problem to be solved in the utility model is, for the deficiencies in the prior art, provides a kind of and can realize safely and effectively pulverizing inflammable explosive material, the crushing material grading plant of classification and cooling.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of crushing material grading plant, comprise feeding device, reducing mechanism, inert gas closed circuit, one-level gas-solid separating device, wind force driving device, secondary gas-solid separating device and dust arrester installation, described feeding device, reducing mechanism, one-level gas-solid separating device, wind force driving device, secondary gas-solid separating device is connected successively with dust arrester installation, described feeding device is provided with material inlet and inert gas import, described dust arrester installation arranges inert gas outlet, described inert gas closed circuit will send into described reducing mechanism from the isolated inert gas of described dust arrester installation by muffler, recycle inert gas, described inert gas import is connected with source of the gas by appendix, described appendix is arranged pressure sensor and pressure regulator valve, described one-level gas-solid separating device, the top of secondary gas-solid separating device and dust arrester installation is respectively equipped with venting of dust explosion mouth.
Further, described one-level gas-solid separating device is cyclone separator, and described secondary gas-solid separating device is multicyclone.
Further, described wind force driving device is blower fan, and air-valve installed by described blower fan.
Further, described inert gas import is arranged on the below of described material inlet.
Further, described wind force driving device connects inert gas and supplements pipeline, and described inert gas supplements install pipeline inert gas detection alarm instrument, and described inert gas detection alarm instrument is connected with PLC control system.
Further, described feeding device, reducing mechanism, one-level gas-solid separating device, wind force driving device, secondary gas-solid separating device are connected with PLC control system respectively with dust arrester installation.
Further, described one-level gas-solid separating device, secondary gas-solid separating device and dust arrester installation arrange liquid circulation pipeline respectively.
Further, described liquid circulation pipeline arranges pressure regulator valve, and described pressure regulator valve is connected with PLC control system signal.
Further, described one-level gas-solid separating device, described secondary gas-solid separating device, described dust arrester installation and described muffler be set temperature sensor respectively, and described temperature sensor is connected with PLC control system signal.
The utility model compared with prior art, its beneficial effect is as follows: a kind of crushing material grading plant of the utility model, comprise feeding device, reducing mechanism, inert gas closed circuit, gas-solid separating device, wind force driving device and dust arrester installation, by connection and the cooperation of said apparatus, can realize safely and effectively pulverizing inflammable explosive material, classification and cooling.
First; described reducing mechanism is provided with inert gas import; described dust arrester installation is provided with inert gas outlet; described inert gas closed circuit will send into described reducing mechanism from the isolated inert gas of described dust arrester installation, and recycle inert gas, inert gas is protective gas; also be the transmission medium of material; and inert gas can recycle, decrease the waste of material, economize on resources.
Secondly, by the setting of one-level gas-solid separating device, secondary gas-solid separating device and dust arrester installation, classification can be carried out to material, obtain varigrained material; Wind force driving device is arranged between described one-level gas-solid separating device and described secondary gas-solid separating device, the power demand before and after wind force driving device and integrated artistic demand are taken into account, the inert gas separated from one-level gas-solid separating device and partial material is driven to enter secondary gas-solid separating device smoothly, just can control the time of staying of material in reducing mechanism by controlling the flow of material in wind force driving device, thus control the granularity of material; The top of described one-level gas-solid separating device, secondary gas-solid separating device and dust arrester installation is respectively equipped with venting of dust explosion mouth; the setting of venting of dust explosion mouth is used for when the fortuitous events such as blast occur; the energy drag of blast release can be deviated from the direction of operator and apparatus main body, the safety of protection operator and apparatus main body.
Whole equipment, in running, has inert gas shielding, after material enters reducing mechanism, does not contact with air, avoids oxidation, can not be scattered simultaneously, decrease the pollution of working environment from device.The utility model novel structure, reasonable in design, safe and reliable, simple to operate, the pulverizing to inflammable and explosive oxidizable material, classification and cooling can be realized, gather multi-function in integral whole, practical.
Accompanying drawing explanation
Fig. 1: the structural representation of the utility model embodiment 1;
Fig. 2: the structural representation of the utility model embodiment 2;
Fig. 3: the structural representation of the utility model embodiment 3;
Fig. 4: the structural representation of the liquid circulation pipeline of dust arrester installation in the utility model;
Wherein, 1-feeding device, 2-reducing mechanism, 3-muffler, 4-one-level gas-solid separating device, 5-wind force driving device, 6-secondary gas-solid separating device, 7-dust arrester installation, 8-liquid circulation pipeline, 9-discharging opening, 10-outlet valve, 11-inert gas supplements pipeline, 12-inert gas detection alarm instrument, 13-PLC control system, 14-venting of dust explosion mouth, 15-liquid circulation pipeline, 16-appendix, 17-pressure regulator valve, 18-temperature sensor.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment 1
Consult Fig. 1, the utility model provides a kind of crushing material grading plant, comprise feeding device 1, reducing mechanism 2, inert gas closed circuit, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 and dust arrester installation 7, feeding device 1, reducing mechanism 2, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 is connected successively with dust arrester installation 7, feeding device 1 is provided with material inlet 1-1 and inert gas import 1-2, dust arrester installation 7 arranges inert gas outlet, inert gas closed circuit will send into reducing mechanism 2 from the isolated inert gas of dust arrester installation 7 by muffler 3, recycle inert gas, inert gas import 1-2 is connected with source of the gas by appendix 16, appendix 16 is provided with pressure sensor 16-1 and pressure regulator valve 16-2, one-level gas-solid separating device 4, the top of secondary gas-solid separating device 6 and dust arrester installation 7 is respectively equipped with venting of dust explosion mouth 14.
Inert gas import 1-2 is connected with source of the gas by appendix 16, and appendix 16 is provided with pressure sensor 16-1 and pressure regulator valve 16-2, for detecting and regulate the input pressure of inert gas respectively.Inert gas is protective gas, be also the transmission medium of material, and inert gas can recycle, decrease the waste of material, economize on resources, and inert gas adopts nitrogen.Source of the gas comes from inertial gas tank or from inert gas workshop.
Material inlet 1-1 is arranged on the top of feeding device 1, and the outlet of feeding device 1 connects reducing mechanism 2, for feeding in raw material to reducing mechanism 2.
Reducing mechanism 2 can select vibration superfine disintegrator, under the protection of inert gas, by magnesium metal or inflammable, the explosive or oxidizable crushing material close with its character.
Gas-solid separating device isolates magnesium metal solid, isolate inert gas simultaneously, much gas-solid separating device comprises one-level gas-solid separating device 4 and secondary gas-solid separating device 6, can obtain more alternative raw meal particle size scope like this, meet different application demands.Concrete, one-level gas solid separation fills preferred cyclone separator, and for by the material collection compared with coarsegrain, secondary gas-solid separating device 6 is multicyclone preferably, for the material collection by median particle size.According to process requirements, can also arrange three grades of gas-solid separating devices, even more multistage gas-solid separating device, is connected in series, and meanwhile, also needs power set and/or the condition of considering change system cloud gray model.
Wind force driving device 5 is connected with between one-level gas-solid separating device 4 and secondary gas-solid separating device 6, wind force driving device 5 can select blower fan, air-valve installed by blower fan, just can control the time of staying of material in reducing mechanism by controlling material by the flow in blower fan, thus the granularity of material can be controlled.
Gas-solid separating device is connected with dust arrester installation 7, then can by the material collection of smaller particle size.
Above-mentioned one-level gas-solid separating device 4, secondary gas-solid separating device 6 and dust arrester installation 7 are equipped with discharging opening 9, discharging opening 9 are arranged outlet valve 10, for the varigrained material collection be separated being got up.Preferably, discharging opening 9 can also be flexibly connected material collection cylinder, to collect and to store material.
The process of above-mentioned crushing material grading plant, comprises the steps:
Step S1, in feeding device 1, be filled with inert gas by inert gas import, make oxygen content wherein lower than setting value;
Step S2, material enter in reducing mechanism 2 by feeding device 1, material enters one-level gas-solid separating device 4 by pipeline after pulverizing in reducing mechanism 2, under the driving of wind force driving device 5, secondary gas-solid separating device 6 is entered through pipeline through the isolated inert gas of one-level gas-solid separating device 4 and partial material, dust arrester installation 7 is entered through pipeline through the isolated inert gas of secondary gas-solid separating device 6 and partial material, dust is all collected by dust arrester installation 7, and isolated inert gas cooled via return air pipe 3 enters in reducing mechanism 2.
Embodiment 2
Consult Fig. 2, the utility model provides a kind of crushing material grading plant, comprise feeding device 1, reducing mechanism 2, inert gas closed circuit, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 and dust arrester installation 7, feeding device 1, reducing mechanism 2, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 is connected successively with dust arrester installation 7, feeding device 1 is provided with material inlet 1-1 and inert gas import 1-2, dust arrester installation 7 arranges inert gas outlet, inert gas closed circuit will send into reducing mechanism 2 from the isolated inert gas of dust arrester installation 7 by muffler 3, recycle inert gas, inert gas import 1-2 is connected with source of the gas by appendix 16, appendix 16 is provided with pressure sensor 16-1 and pressure regulator valve 16-2, one-level gas-solid separating device 4, the top of secondary gas-solid separating device 6 and dust arrester installation 7 is respectively equipped with venting of dust explosion mouth 14.
Crushing material grading plant described by the present embodiment, as different from Example 1: wind force driving device 5 connects inert gas and supplements pipeline 11, to ensure in crushing material grading plant as malleation.
Inert gas supplements pipeline 11 and is provided with inert gas detection alarm instrument 12, and inert gas detection alarm instrument 12 is connected with PLC control system 13.
Feeding device 1, reducing mechanism 2, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 are connected with PLC control system 13 respectively with dust arrester installation 7.
The process of above-mentioned crushing material grading plant, comprises the steps:
Step S1, in feeding device 1, be filled with inert gas by inert gas import, make oxygen content wherein lower than setting value;
Step S2, material enter in reducing mechanism 2 by feeding device 1, material enters one-level gas-solid separating device 4 by pipeline after pulverizing in reducing mechanism 2, under the driving of wind force driving device 5, secondary gas-solid separating device 6 is entered through pipeline through the isolated inert gas of one-level gas-solid separating device 4 and partial material, dust arrester installation 7 is entered through pipeline through the isolated inert gas of secondary gas-solid separating device 6 and partial material, dust is all collected by dust arrester installation 7, and isolated inert gas cooled via return air pipe 3 enters in reducing mechanism 2;
Step S3, inert gas is supplemented pipeline 11 by inert gas be filled with wind force driving device 5, to ensure in crushing material grading plant as malleation;
Step S4, when inert gas detection alarm instrument 12 detects the concentration of inert gas lower than setting value, automatic alarm, and send this signal to PLC control system 13, under the control of PLC control system 13, feeding device 1, reducing mechanism 2, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 and dust arrester installation 7 automatic stopping in order.
Embodiment 3
Consult Fig. 3, the utility model provides a kind of crushing material grading plant, comprise feeding device 1, reducing mechanism 2, inert gas closed circuit, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 and dust arrester installation 7, feeding device 1, reducing mechanism 2, one-level gas-solid separating device 4, wind force driving device 5, secondary gas-solid separating device 6 is connected successively with dust arrester installation 7, feeding device 1 is provided with material inlet 1-1 and inert gas import 1-2, dust arrester installation 7 arranges inert gas outlet, inert gas closed circuit will send into reducing mechanism 2 from the isolated inert gas of dust arrester installation 7 by muffler 3, recycle inert gas, inert gas import 1-2 is connected with source of the gas by appendix 16, appendix 16 is provided with pressure sensor 16-1 and pressure regulator valve 16-2, one-level gas-solid separating device 4, the top of secondary gas-solid separating device 6 and dust arrester installation 7 is respectively equipped with venting of dust explosion mouth 14.
Crushing material grading plant described by the present embodiment, as different from Example 2:
One-level gas-solid separating device 4, secondary gas-solid separating device 6 and dust arrester installation 7 arrange liquid circulation pipeline 15 respectively.
Consult Fig. 4, for dust arrester installation 7, the concrete method to set up of liquid circulation pipeline 15 in the utility model is described: the outer wall 7-1 of dust arrester installation 7 is provided with interlayer 7-2, be cavity between above-mentioned outer wall 7-1 and interlayer 7-2, liquid circulation pipeline 15 depends on above-mentioned outer wall 7-1 and to spiral the helically structure that rises in above-mentioned cavity.Liquid circulation pipeline 15 connects feed tube 15-1 and drain pipe 15-2, and feed tube 15-1 is positioned at the bottom of device, and drain pipe 15-2 is positioned at the top of device.
For this liquid circulation pipeline, preferably, feed tube 15-1 is connected with liquid pump, feed tube 15-1 arranges pressure regulator valve 17, to regulate break-make and the flow (circulation rate) of cooling fluid, near liquid outlet place set temperature sensor on drain pipe 15-2, pressure regulator valve 17 and temperature sensor are connected with PLC control system 13 signal respectively, get final product A.T.C, economize energy.
In one-level gas-solid separating device 4 and secondary gas-solid separating device 6, the setting of liquid circulation pipeline 15 can with reference to the concrete method to set up of dust arrester installation 7.
One-level gas-solid separating device 4, secondary gas-solid separating device 6, dust arrester installation 7 and muffler 3 be set temperature sensor 18 respectively, and temperature sensor 18 is connected with PLC control system 13 signal.Temperature sensor 18 is for obtaining the temperature in one-level gas-solid separating device 4, secondary gas-solid separating device 6, dust arrester installation 7 and muffler 3 respectively, send this temperature to PLC control system 13, pid algorithm in PLC control system 13 can calculate the cooling liquid speed that applicable equipment runs, change the flow velocity of cooling fluid, when temperature height, increase the circular flow of cooling fluid, when temperature is low, can liquid circulation be closed, and send corresponding instruction to pressure regulator valve 17.
The process of above-mentioned crushing material grading plant, comprises the steps:
Step S1, in reducing mechanism 2, be filled with inert gas, make oxygen content wherein lower than setting value;
Step S2, by feeding device 1, material is sent in reducing mechanism 2, material enters one-level gas-solid separating device 4 by pipeline after pulverizing in reducing mechanism 2, under the driving of wind force driving device 5, secondary gas-solid separating device 6 is entered through pipeline through the isolated inert gas of one-level gas-solid separating device 4 and partial material, dust arrester installation 7 is entered through pipeline through the isolated inert gas of secondary gas-solid separating device 6 and partial material, dust is all collected by dust arrester installation 7, and isolated inert gas cooled via return air pipe 3 enters in reducing mechanism 2;
Step S3, temperature sensor 18 send the temperature detected to PLC control system 13, pid algorithm in PLC control system 13 can calculate the cooling liquid speed that applicable equipment runs, and send corresponding instruction to pressure regulator valve 17, change the flow velocity of cooling fluid, make the detected temperatures of temperature sensor 18 be equal to or less than setting value.
Embodiment listed by the utility model, be only the embodiment that part of the present utility model is concrete, be more preferably, above-described embodiment can also be carried out organic assembling, to make the function of crushing material grading plant of the present utility model more, security performance is better, more convenient to operate, controls simpler.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, other amendments that those of ordinary skill in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. a crushing material grading plant, it is characterized in that: comprise feeding device, reducing mechanism, inert gas closed circuit, one-level gas-solid separating device, wind force driving device, secondary gas-solid separating device and dust arrester installation, described feeding device, reducing mechanism, one-level gas-solid separating device, wind force driving device, secondary gas-solid separating device is connected successively with dust arrester installation, described feeding device is provided with material inlet and inert gas import, described dust arrester installation arranges inert gas outlet, described inert gas closed circuit will send into described reducing mechanism from the isolated inert gas of described dust arrester installation by muffler, recycle inert gas, described inert gas import is connected with source of the gas by appendix, described appendix is arranged pressure sensor and pressure regulator valve, described one-level gas-solid separating device, the top of secondary gas-solid separating device and dust arrester installation is respectively equipped with venting of dust explosion mouth.
2. a kind of crushing material grading plant as claimed in claim 1, it is characterized in that: described one-level gas-solid separating device is cyclone separator, described secondary gas-solid separating device is multicyclone.
3. a kind of crushing material grading plant as claimed in claim 1, is characterized in that: described wind force driving device is blower fan, and air-valve installed by described blower fan.
4. a kind of crushing material grading plant as claimed in claim 1, is characterized in that: described inert gas import is arranged on the below of described material inlet.
5. a kind of crushing material grading plant as claimed in claim 1, it is characterized in that: described wind force driving device connects inert gas and supplements pipeline, described inert gas supplements install pipeline inert gas detection alarm instrument, and described inert gas detection alarm instrument is connected with PLC control system.
6. a kind of crushing material grading plant as claimed in claim 5, is characterized in that: described feeding device, reducing mechanism, one-level gas-solid separating device, wind force driving device, secondary gas-solid separating device are connected with PLC control system respectively with dust arrester installation.
7. a kind of crushing material grading plant as claimed in claim 1, is characterized in that: described one-level gas-solid separating device, secondary gas-solid separating device and dust arrester installation arrange liquid circulation pipeline respectively.
8. a kind of crushing material grading plant as claimed in claim 7, is characterized in that: described liquid circulation pipeline arranges pressure regulator valve, and described pressure regulator valve is connected with PLC control system signal.
9. a kind of crushing material grading plant as claimed in claim 8, it is characterized in that: described one-level gas-solid separating device, described secondary gas-solid separating device, described dust arrester installation and described muffler be set temperature sensor respectively, and described temperature sensor is connected with PLC control system signal.
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| CN201520961030.9U CN205146412U (en) | 2015-11-28 | 2015-11-28 | Comminuted grading plant |
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| CN201520961030.9U CN205146412U (en) | 2015-11-28 | 2015-11-28 | Comminuted grading plant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363541A (en) * | 2015-11-28 | 2016-03-02 | 南阳福森镁粉有限公司 | Magnesium metal smashing and grading device and technique thereof |
| CN106172903A (en) * | 2016-07-07 | 2016-12-07 | 神农架林区神农奇峰茶业有限公司 | The superfine grinding method of Folium Camelliae sinensis and tea powder goods thereof |
| CN108380350A (en) * | 2018-02-08 | 2018-08-10 | 西南科技大学 | The closed cycle drug processing technology and device of no isopropanol discharge |
-
2015
- 2015-11-28 CN CN201520961030.9U patent/CN205146412U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363541A (en) * | 2015-11-28 | 2016-03-02 | 南阳福森镁粉有限公司 | Magnesium metal smashing and grading device and technique thereof |
| CN106172903A (en) * | 2016-07-07 | 2016-12-07 | 神农架林区神农奇峰茶业有限公司 | The superfine grinding method of Folium Camelliae sinensis and tea powder goods thereof |
| CN108380350A (en) * | 2018-02-08 | 2018-08-10 | 西南科技大学 | The closed cycle drug processing technology and device of no isopropanol discharge |
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