CN209829197U - Inert gas protection jet milling multi-stage grading system - Google Patents
Inert gas protection jet milling multi-stage grading system Download PDFInfo
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- CN209829197U CN209829197U CN201920611883.8U CN201920611883U CN209829197U CN 209829197 U CN209829197 U CN 209829197U CN 201920611883 U CN201920611883 U CN 201920611883U CN 209829197 U CN209829197 U CN 209829197U
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Abstract
The utility model discloses an inert gas protection airflow crushing multistage grading system, which comprises a crushing system for crushing materials, an airflow system for providing compressed gas for the crushing system and an inert gas manufacturing system for manufacturing inert gas for the airflow system; and the gas separated after the material is crushed by the crushing system is purified and then flows back to the airflow system. The whole system is operated in a closed mode, inert gas is used as a medium for airflow crushing, and the materials are prevented from deteriorating due to oxidation, moisture absorption and the like. The special material crushing process can be used for special material crushing processes which are inflammable, explosive, easy to oxidize, extremely high in requirements on moisture, extremely high in purity and the like, extremely high in requirements on particle size distribution and require particle size concentration.
Description
Technical Field
The utility model relates to a fluid energy milling multistage grading system, especially one kind is used for smashing easily fire easily explode, easily oxidize, require high, the purity is extremely high etc. to moisture, require high to the particle size distribution simultaneously, require the fluid energy milling system of the special material that the granularity is concentrated.
Background
The principle of the air flow crushing system is that compressed air is filtered and dried, and then is injected into a crushing cavity at a high speed through a Laval nozzle, materials at the intersection point of a plurality of high-pressure air flows are repeatedly collided, rubbed and sheared to be crushed, the crushed materials move to a classification area along with ascending air flow under the suction force of a fan, under the action of strong centrifugal force generated by a classification turbine rotating at a high speed, the coarse and fine materials are separated, fine particles meeting the particle size requirement enter a cyclone separator and a dust remover to be collected through a classification wheel, and the coarse particles descend to the crushing area to be continuously crushed.
The existing jet milling system generally adopts air as milling gas to mill materials, however, for some materials which are easy to oxidize and absorb moisture and carbon dioxide, if the materials are milled by air, the materials are deteriorated, so the existing jet milling system is not suitable for milling the materials.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an inert gas protection fluid energy milling multistage grading system for inflammable and explosive, easy oxidation, to moisture requirement high, purity extremely high etc. require high to the particle size distribution simultaneously, require the special material crushing that the granularity concentrates.
For solving the above technical problem, the technical scheme of the utility model is that: an inert gas protection jet milling multi-stage grading system comprises a milling system for milling materials, a gas flow system for providing compressed gas for the milling system and an inert gas manufacturing system for manufacturing inert gas for the gas flow system; and the gas separated after the material is crushed by the crushing system flows back to the airflow system. The whole system is closed, and inert gas is used as a medium to carry out airflow crushing, so that the materials are prevented from deteriorating due to oxidation, moisture absorption and carbon dioxide.
As an improvement, the crushing system comprises a crusher main machine, wherein a feed inlet of the crusher main machine is connected with a storage bin, and a discharge outlet of the crusher main machine is connected with a primary classifier; the discharge port of the primary classifier is connected with the secondary classifier; the secondary classifier is connected with the dust removal collector; and the air outlet of the dust collector is connected with an air flow system. Can grade two high-quality finished product materials with ultra-narrow grain size sections at one time.
As an improvement, a demagnetizer, a stirring bin and a screw feeder are sequentially connected between the stock bin and the main machine of the pulverizer. Demagnetizing and uniformly stirring the materials to be crushed, and feeding the materials to the main machine of the crusher by using the screw feeder.
As an improvement, two pneumatic butterfly valves connected in series are arranged at the discharge port of the storage bin. The two butterfly valves are opened at intervals, so that the air tightness of the whole system is ensured, and the communication with the atmosphere during feeding is avoided.
Preferably, the classifiers may be two or more in series.
As an improvement, the gas flow system comprises a gas compressor, a precision filter, a cold dryer and an adsorption dryer which are connected in sequence; and the airflow outlet of the adsorption dryer is connected with the airflow inlet of the main machine of the pulverizer. The gas stream is filtered and dried.
As an improvement, the inert gas manufacturing system comprises an air compressor, a precision filter, an adsorption dryer, an air buffer tank, an inert gas manufacturing machine and an inert gas storage tank which are connected in sequence; and an airflow outlet of the inert gas storage tank is connected with an inert gas inlet of the main machine of the pulverizer. The gas source for producing inert gas (nitrogen) is provided for the whole system.
As an improvement, an emergency filter is arranged on a pipeline for returning the gas separated by the crushing system to the gas flow system. And emergency filtration is carried out after the front grading and collecting device fails, so that safety accidents caused by blocking of a gas compressor by powder are avoided.
The utility model discloses an useful part lies in: the airflow crushing and grading system with the structure has the advantages that the crushing, grading and collection of the materials are carried out under the closed condition protected by the inert gas, so that the materials which are easy to oxidize and absorb moisture, carbon dioxide and the like can be crushed, the high-quality finished materials with two ultra-narrow granularity sections are graded at one time, and the granularity can be adjusted at will.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: 1. a gas compressor; 2. a precision filter; 3. a cold dryer; 4. an adsorption dryer; 5. a raw material bin; 6. a pneumatic butterfly valve; 7. a demagnetizer; 8. a stirring bin; 9. a screw feeder; 10. an inert gas inlet; 11. a pulverizer main machine; 12. a first-stage classifier; 13. a secondary classifier; 14. a finished product 1 is discharged; 15. a finished product 2 is discharged; 16. a dust removal collector; 17. an emergency filter; 18. an inert gas storage tank; 19. an inert gas making machine; 20. an air buffer tank; 21. an adsorption dryer; 22. a precision filter; 23. an air compressor.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.
Embodiment 1 is a two-stage classification system as shown in fig. 1, but the present invention is not limited to the number of classification stages, and two or more classifiers may be connected in series as required. The system comprises a crushing system for crushing materials, a gas flow system for providing compressed gas for the crushing system and an inert gas manufacturing system for manufacturing inert gas for the gas flow system; and the gas separated after the material is crushed by the crushing system flows back to the airflow system. An emergency filter 17 is arranged on the pipeline for returning the gas separated by the crushing system to the gas flow system.
The crushing system comprises a crusher main machine 11, wherein a feed inlet of the crusher main machine 11 is connected with the storage bin 5, and a discharge outlet of the crusher main machine 11 is connected with a primary classifier 12; the discharge port of the primary classifier 12 is connected with the secondary classifier 13; the secondary classifier 13 is connected with a dust removal collector 16; and the air outlet of the dust collector 16 is connected with the air compressor 1 of the airflow system. The secondary classifier 13 is a cyclone separator. A demagnetizer 7, a stirring bin 8 and a screw feeder 9 are sequentially connected between the bin 5 and the crusher main machine 11. Two pneumatic butterfly valves 6 connected in series are arranged at the discharge port of the storage bin 5, and preferably two starting butterfly valves 6 are respectively arranged at the upper end and the lower end of the demagnetizer 7.
The air flow system comprises an air compressor 1, a precision filter 2, a cold dryer 3 and an adsorption dryer 4 which are connected in sequence; and the airflow outlet of the adsorption dryer 4 is connected with the airflow inlet of the main crusher 11.
The inert gas manufacturing system comprises an air compressor 23, a precision filter 22, an adsorption dryer 21, an air buffer tank 20, an inert gas manufacturing machine 19 and an inert gas storage tank 18 which are connected in sequence; the airflow outlet of the inert gas storage tank 18 is connected with the inert gas inlet 10 of the pulverizer main machine 11.
When the system works, the power supply is started, the air compressor 23 starts to work, the inert gas manufacturing system operates, the manufactured inert gas flows to the crushing system, the air in each part of the crushing system is exhausted by the inflow inert gas, the airflow system is started so as to facilitate the air exhaust of the whole system, and the inert gas stops being filled when the oxygen content analyzer monitoring device detects that the oxygen content is proper.
The material bin 5 is communicated with the stirring bin 8 through a pneumatic butterfly valve 6, the pneumatic butterfly valve 6 adopts two components which are connected in series to open and close in a staggered way when feeding so as to ensure that the materials are uniformly fed in a sealing way, after the materials enter the stirring bin 8, the material is stirred up by a stirrer in the stirring bin 8 and is uniformly and continuously conveyed to the jet milling host 11 by the screw feeder 9, the crushed material rises into the primary classifier 12, the material returns to the milling cavity for continuous crushing after passing through the large particle section of classification, the material meeting the particle size requirement enters the secondary classifier 13 after being classified by the primary classifier 12, the outlet of the primary classifier 12 is connected with the inlet of the secondary classifier 13, the lower end of the secondary classifier 13 is provided with a finished product 1 outlet 14, the middle section material reaches the lower end finished product 1 outlet 14 after being classified by the secondary classifier 13, the thinner material enters the dust removal collector 16 and reaches the lower end finished product 2 outlet 15 of the dust removal collector 16, and the upper end is connected to the air compressor 1 by a return air pipeline. The discharge port 14 of the finished product 1 and the discharge port 15 of the finished product 2 are both provided with two butterfly valves which are connected in series, so that the real system can operate in a closed environment, and the materials are prevented from being oxidized or absorbing moisture and carbon dioxide.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides an inert gas protection jet milling multistage grading system which characterized in that: comprises a crushing system for crushing materials, a gas flow system for providing compressed gas for the crushing system and an inert gas manufacturing system for manufacturing inert gas for the gas flow system; the gas separated after the material is crushed by the crushing system is purified and then flows back to the airflow system for recycling.
2. The inert gas flow pulverizing multistage classification system according to claim 1, characterized in that: the crushing system comprises a crusher main machine, wherein a feed inlet of the crusher main machine is connected with a storage bin, and a discharge outlet of the crusher main machine is connected with a primary classifier; the discharge port of the primary classifier is connected with the secondary classifier; the secondary classifier is connected with the dust removal collector; and the air outlet of the dust collector is connected with an air flow system.
3. The inert gas flow pulverizing multistage classification system according to claim 2, characterized in that: and a demagnetizer, a stirring bin and a screw feeder are sequentially connected between the stock bin and the main machine of the pulverizer.
4. The inert gas flow pulverizing multistage classification system according to claim 3, characterized in that: two pneumatic butterfly valves connected in series are arranged at the discharge outlet of the storage bin.
5. The inert gas flow pulverizing multistage classification system according to claim 2, characterized in that: the classifiers may be two or more in series.
6. The inert gas flow pulverizing multistage classification system according to claim 2, characterized in that: the air flow system comprises an air compressor, a precision filter, a cold dryer and an adsorption dryer which are connected in sequence; and the airflow outlet of the adsorption dryer is connected with the airflow inlet of the main machine of the pulverizer.
7. The inert gas flow pulverizing multistage classification system according to claim 2, characterized in that: the inert gas manufacturing system comprises an air compressor, a precision filter, an adsorption dryer, an air buffer tank, an inert gas manufacturing machine and an inert gas storage tank which are connected in sequence; and an airflow outlet of the inert gas storage tank is connected with an inert gas inlet of the main machine of the pulverizer.
8. An inert gas flow pulverizing multi-stage classification system according to claim 1, characterized in that: an emergency filter is arranged on a pipeline for returning the gas separated by the crushing system to the gas flow system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920611883.8U CN209829197U (en) | 2019-04-29 | 2019-04-29 | Inert gas protection jet milling multi-stage grading system |
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| CN201920611883.8U CN209829197U (en) | 2019-04-29 | 2019-04-29 | Inert gas protection jet milling multi-stage grading system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189985A (en) * | 2020-03-03 | 2020-05-22 | 上蔡县状元红食品质量检测服务有限公司 | Food nutrient content detection device |
| CN111604148A (en) * | 2020-06-02 | 2020-09-01 | 台州普渡机械设备有限公司 | Nitrogen circulating airflow material crushing system and working process thereof |
| CN111688068A (en) * | 2020-06-22 | 2020-09-22 | 北海市传创环保科技有限公司 | Waste tire crushing device and crushing method thereof |
| CN113000378A (en) * | 2021-02-09 | 2021-06-22 | 北京航化节能环保技术有限公司 | Low-vacuum explosion-proof ultrafine particle grading device |
-
2019
- 2019-04-29 CN CN201920611883.8U patent/CN209829197U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189985A (en) * | 2020-03-03 | 2020-05-22 | 上蔡县状元红食品质量检测服务有限公司 | Food nutrient content detection device |
| CN111189985B (en) * | 2020-03-03 | 2022-05-31 | 上蔡县状元红食品质量检测服务有限公司 | Food nutrient content detection device |
| CN111604148A (en) * | 2020-06-02 | 2020-09-01 | 台州普渡机械设备有限公司 | Nitrogen circulating airflow material crushing system and working process thereof |
| CN111604148B (en) * | 2020-06-02 | 2022-03-15 | 台州普渡机械设备有限公司 | Nitrogen circulating airflow material crushing system and working process thereof |
| CN111688068A (en) * | 2020-06-22 | 2020-09-22 | 北海市传创环保科技有限公司 | Waste tire crushing device and crushing method thereof |
| CN113000378A (en) * | 2021-02-09 | 2021-06-22 | 北京航化节能环保技术有限公司 | Low-vacuum explosion-proof ultrafine particle grading device |
| CN113000378B (en) * | 2021-02-09 | 2022-08-12 | 北京航化节能环保技术有限公司 | Low-vacuum explosion-proof ultrafine particle grading device |
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