CN100438995C - Excludation of floc in Chinese chestnut shell powder - Google Patents
Excludation of floc in Chinese chestnut shell powder Download PDFInfo
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- CN100438995C CN100438995C CNB2004100875692A CN200410087569A CN100438995C CN 100438995 C CN100438995 C CN 100438995C CN B2004100875692 A CNB2004100875692 A CN B2004100875692A CN 200410087569 A CN200410087569 A CN 200410087569A CN 100438995 C CN100438995 C CN 100438995C
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- chestnut shell
- floccule
- floc
- air intake
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Abstract
The present invention relates to a separation technique of floc, particularly to an exclusion method of floc in Chinese chestnut shells (in the process of extracting a natural brown pigment). In the method, a frequency-changing turbine type airflow grading machine is used for realizing the separation between the floc and the Chinese chestnut shell particles; pulverized chestnut shells are fed into a separating selecting chamber of the frequency-changing turbine type airflow grading machine by air from a once air intake feed opening; the floc is excluded by a turbine guide light burden outlet; and the Chinese chestnut shell particles settle at a heavy burden outlet at the bottom of the frequency-changing turbine type airflow grading machine. The rotating number of a rotating turbine of the frequency-changing turbine type airflow grading machine is from 800 to 1500 r/m, the air speed of a once air intake fan is from 0.48 to 0.70 m/s, and the air speed of a secondary air intake fan is from 0.41 to 0.70 m/s. The present invention has the advantages of high separation efficiency, simple and convenient operation, etc.
Description
Technical field
The present invention relates to the separation of floccule in the solid material, the method for removing of (in the natural brown pigment leaching process) floccule in a kind of specifically chestnut shell crushed material.
Background technology
The Brown Pigment in Chestnut Shells extraction process is: chestnut shell is pulverized → is removed floccule → aqueous slkali lixiviate → filter → remove filter residue → decompression concentrated → sedimentation → isolated by filtration → spray-drying → pigment finished product.In the production extraction process of Brown Pigment in Chestnut Shells, involved " eliminating floccule " is meant to remove to be attached to Chinese chestnut nut exocarp inwall and to stick to a kind of fine hair on the endocarp.Chestnut shell (shuck) is when pulverizing, and this fine hair is to interweave at the outer casing inner wall of shuck and be attached on the endocarp with fibrous.When chestnut shell was pulverized, this fibre object does not have destroyed condensing together on the contrary to be become floccule and hangs down, and major part has certain particle diameter and the little chestnut shell particle of density sticks on the floccule simultaneously; When the chestnut shell drops into the alkali lye lixiviate, the volumetric expansion of floccule is attached on the leaching liquor surface, make the leaching liquor volume especially so strengthen, then being attached to lip-deep chestnut shell particle still is difficult to soak into, like this, brought suitable difficulty on the extraction process to pigment production, and in the face of this process procedure if can not fine solution meeting directly influence the yield and the industrial cost cost of this pigment finished product.Therefore, understand, be familiar with the characteristics of this material, doing one's utmost to get rid of floccule is the primary guardian technique problem that solves in the chestnut shell brown pigment production extraction process.
Summary of the invention
The object of the present invention is to provide the method for removing of floccule in a kind of separation (sorting) efficient height, the easy to operate chestnut shell crushed material.
For achieving the above object, the technical solution used in the present invention is as follows:
The method for removing of floccule in a kind of chestnut shell crushed material, chestnut shell is pulverized, employing frequency conversion vortex classifier separation realization floccule separates with the chestnut shell particle, the chestnut shell of pulverizing is sent to the separation chamber of grader with wind by air intake material mouth, floccule is excluded by light material outlet, the chestnut shell particles settling is in the heavy burder outlet of grader bottom, wherein, the revolution of grader revolving wormgear is 800～1500r/min, the wind speed of an air intake blower fan is 0.48～0.70m/s, and the wind speed of secondary air blower fan is 0.41～0.70m/s.
The granularity that described chestnut shell particle is pulverized is 3～5mm; The preferred technique parameter area of above-mentioned selection by winnowing is: the revolution of grader revolving wormgear is 1000～1200r/min, and the wind speed of an air intake blower fan is 0.5～0.65m/s, and the wind speed of secondary air blower fan is 0.44～0.65m/s.
The applicant practice repeatedly with investigate the technical matters of having selected for use frequency conversion turbine type separation system chestnut shell and floccule to be carried out sorting.The efficient frequency conversion gas flow sizing machine that has the revolving wormgear formula grows up on the centrifugal classifying basis, this centrifugal classifying is a kind of isolation technics between Gravity Separation and centrifugation, when its effect characteristics are material with gas flow, can swerve, make particle obtain centrifugal inertial force and separate; Yet, the final this gas flow sizing machine system that grows up on the centrifugal classifying basis controls the quality of product and the efficiency of separation by technological means such as variable-frequency motor, secondary air flow, adjusting air-valves, so, the application that frequency conversion turbine type separation system is chosen at chestnut shell and floccule branch effectively utilizes the major technique means of each grade characteristic sorting exactly.And classification in whole technical measures, separation system is again the key of this technology, its operation principle is: for classification, the design core of separation system is the optimization of systematic parameter and the debugging of operating condition, because the motion of classification process particle and particle swarm is very complicated, do not have accurate and perfect theoretical described so far, but continue to use the simplification pattern that individual particle is set up when centrifugal force field is moved, particle mainly is subjected to centrifugal force in centrifugal force field and aerodynamic drag acts on simultaneously, separated during greater than resistance when the suffered centrifugal force of particle, otherwise easily taken out of by the big particle of resistance by air-flow.So far the two dimensional model that a kind of individual particle motion of being adopted by people is simplified is to utilize centrifugal force and resistance balance, obtains Cut size and promptly cuts particle diameter (dc).And the size of Cut size dc is main and classification revolving wormgear revolution n is inversely proportional to, and the air quantity Q1/2 that moves with system is directly proportional.In order to satisfy the effectiveness of classification requirement, the structure that then makes system is definite value k.Its functional relation is as follows: dc=k (Q1/2) n, in the formula: Q-system operation air quantity; The rotating speed of n-revolving wormgear; The k-structural constant.From formula as seen, air quantity Q wherein and stage turbine revolution n are variables, not only can regulate the adjusting of effectiveness of classification like this and realize by air quantity, and can regulate by secondary speed and realize, adjustable range is with regard to non-constant width like this, fineness is 5-20% in (45um) adjustable extent, can satisfy the sorting of size fractionated like this.Simultaneously, turbine is adjusted to the frequency conversion digitlization and regulates, regulate intuitive and convenient, just can carry out in the control room, promptly saving manpower again can conservation of power, so the turbine type separating method of this band rotary blade is to have efficiency of separation height, effectiveness of classification height, stable, reliable regulatable again, a kind of more advanced sorting technology of runnability.
Description of drawings
Fig. 1 is the structural representation of frequency conversion turbine separator of the present invention.Wherein: 1 is variable-frequency motor, and 2 is power transmission shaft, and 3 is an air intake material mouth, and 4 is impeller, and 5 is separation chamber, and 6 is light material outlet, and 7 is the twice aeration mouth, and 8 are the heavy burder outlet.
The specific embodiment
The main selection by winnowing technical parameter that the present invention adopts is as follows: grader revolving wormgear revolution n:800～1500r/min; The wind speed of an air intake blower fan is 0.48～0.70m/s, fan delivery Q:80～100m3/min; The wind speed of secondary air blower fan is 0.41～0.70m/s; Grader power: 1.0～1.5kw/h; Grader production capacity 200～1000kg/h.
As shown in Figure 1, the revolution that variable-frequency motor 1 drives power transmission shaft 2 control grader revolving wormgears is that 1000r/min (can regulate arbitrarily by secondary speed, the efficiency of separation in the time of can improving floccule number in the material, again can saves energy), be ground into the chestnut shell that granularity is 3～5mm, arrived separation chamber 5 by an air intake material mouth 3 (air inlet and charging aperture) by negative pressure transportation, the wind speed of an air intake blower fan is 0.50m/s, in separation chamber, material is subjected to the acting in conjunction of centrifugal force and aerodynamic drag, but performance is different when making a concerted effort to put on the particle of different quality, lighter particle floccule is drawn close to turbine or impeller 4 owing to aerodynamic drag＞centrifugal force, and be excluded by the light material outlet 6 of turbine guiding, thicker particle then is centrifugal force＞aerodynamic drag, make its outside motion, slow down at the periphery place, and gravitate sinks, be that raw material enters heavy burder outlet 8 storages, secondary wind is sent into separation chamber 5 from the twice aeration mouth 7 of opposite side, its wind speed is 0.6m/s, floccule in the coarse fodder (the chestnut shell particulate material of promptly separating) is held up once more, thereby further improved the efficiency of separation, the clearance of floccule is reached more than 90%.
Claims (3)
1. the method for removing of floccule in the chestnut shell crushed material, it is characterized in that: chestnut shell is pulverized, employing frequency conversion vortex classifier separation realization floccule separates with the chestnut shell particle, specific operation process is, the chestnut shell of pulverizing is sent to the separation chamber (5) of grader with wind by an air intake material mouth (3), floccule exports (6) by light material and is excluded, the chestnut shell particles settling is in the heavy burder outlet (8) of grader bottom, wherein, the revolution of grader revolving wormgear is 800～1500r/min, the wind speed of an air intake blower fan is 0.48～0.70m/s, and the wind speed of secondary air blower fan is 0.41～0.70m/s.
2. according to the method for removing of floccule in the described chestnut shell crushed material of claim 1, it is characterized in that: the granularity that described chestnut shell particle is pulverized is 3～5mm.
3. according to the method for removing of floccule in the described chestnut shell crushed material of claim 1, it is characterized in that: the revolution of grader revolving wormgear is 1000～1200r/min, the wind speed of an air intake blower fan is 0.5～0.65m/s, and the wind speed of secondary air blower fan is 0.44～0.65m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100875692A CN100438995C (en) | 2004-11-17 | 2004-11-17 | Excludation of floc in Chinese chestnut shell powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100875692A CN100438995C (en) | 2004-11-17 | 2004-11-17 | Excludation of floc in Chinese chestnut shell powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1778477A CN1778477A (en) | 2006-05-31 |
| CN100438995C true CN100438995C (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100875692A Expired - Fee Related CN100438995C (en) | 2004-11-17 | 2004-11-17 | Excludation of floc in Chinese chestnut shell powder |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396783B (en) * | 2015-12-01 | 2018-11-23 | 东阳市启创知识产权运营有限公司 | A kind of separator |
| CN108993904A (en) * | 2018-07-13 | 2018-12-14 | 张雪敏 | A kind of crystal waste slag extracts the preparation facilities of sand-blast material |
| CN113440918A (en) * | 2021-07-12 | 2021-09-28 | 新疆远翔农业科技有限公司 | Fig nutrient substance extraction device and technology based on centrifugal separation and pigment removal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5624039A (en) * | 1993-04-27 | 1997-04-29 | F. L. Smidth & Co. A/S | Separator for sorting of particular material |
| CN2263554Y (en) * | 1996-05-21 | 1997-10-01 | 中国石油化工总公司 | Turbine powdery particle classificator |
| CN2338103Y (en) * | 1998-06-05 | 1999-09-15 | 湖南省电力粉煤灰开发有限公司 | Large scale, high effect, precision and forced air current type separating and sorting machine |
| CN2356759Y (en) * | 1999-02-11 | 2000-01-05 | 阳正凯 | Adjustable forced vortex separator |
| CN2429273Y (en) * | 2000-05-31 | 2001-05-09 | 管国华 | Large effective turbine gas-flow sorting apparatus |
-
2004
- 2004-11-17 CN CNB2004100875692A patent/CN100438995C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5624039A (en) * | 1993-04-27 | 1997-04-29 | F. L. Smidth & Co. A/S | Separator for sorting of particular material |
| CN2263554Y (en) * | 1996-05-21 | 1997-10-01 | 中国石油化工总公司 | Turbine powdery particle classificator |
| CN2338103Y (en) * | 1998-06-05 | 1999-09-15 | 湖南省电力粉煤灰开发有限公司 | Large scale, high effect, precision and forced air current type separating and sorting machine |
| CN2356759Y (en) * | 1999-02-11 | 2000-01-05 | 阳正凯 | Adjustable forced vortex separator |
| CN2429273Y (en) * | 2000-05-31 | 2001-05-09 | 管国华 | Large effective turbine gas-flow sorting apparatus |
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| CN1778477A (en) | 2006-05-31 |
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Granted publication date: 20081203 Termination date: 20121117 |