CN109046519A - A kind of whitening chamber Parameters design of Behavior-based control similarity criterion - Google Patents
A kind of whitening chamber Parameters design of Behavior-based control similarity criterion Download PDFInfo
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- CN109046519A CN109046519A CN201811035017.5A CN201811035017A CN109046519A CN 109046519 A CN109046519 A CN 109046519A CN 201811035017 A CN201811035017 A CN 201811035017A CN 109046519 A CN109046519 A CN 109046519A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
- B02B3/04—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming by means of rollers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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Abstract
The invention belongs to paddy processing equipment technical fields, and in particular to a kind of whitening chamber Parameters design of Behavior-based control similarity criterion.Whitening chamber is made of as rice mill core work component, structural form rice milling sieve and rice milling roller.Traditional whitening chamber design method carries out parameter designing using husk rice axis and rice milling sieve as mutual individual components, causes that consistent performance of milling is not achieved between the whitening chamber of design.And the method have the characteristics that using the intracavitary best clearance change curve of whitening chamber as reference, collaborative design rice milling sieve and the key parameter of rice milling roller between the two.Based on the behavior similarity criterion for generating identical gap change curve, under the premise of non-" clone ", similar husk rice effect is generated between realization different structure whitening chamber.It is designed except rice mill whitening chamber is suitable for, the present invention also plays reference to the parameter similar Design of other intracavitary grinding equipments.
Description
Technical field
The present invention relates to paddy processing equipment technical fields, similar more particularly, to iron roll rice polisher whitening chamber key parameter
Design method.
Background technique
Husk rice is exactly to destroy endosperm and cortex coupling force under the premise of guaranteeing that the grain of rice is complete using certain external force, use object
Reason method removes seed cortex from endosperm surface, and essence belongs to rice peeling except chaff problem.In general, the grain of rice was removed the peel
Journey is completed by rice mill.Since the invention vertical sand mortar rice mill first of France in 1860, all kinds of mills are along standalone architecture
Optimize to enlargement, functionalization and intelligent direction development.However, whitening chamber is as rice mill key structural elements, main body
Still remain the cavity constructions form being made of rice milling roller and rice milling sieve.In whitening chamber (cavity between rice milling roller and rice milling sieve),
Frictional action is generated between rice and rice milling roller, rice milling sieve and grain of rice group, in collision, whitening pressure, rolling and axial transport condition
Lower realization peeling removes chaff.It is shown according to disclosed document, patent, 70~eighties of last century has benefited from the Ministry of Agriculture and hold the whole nation
Rice milling unit concentration selects excellent test meeting, and a collection of husk rice model machine of the final shaping has been formed simultaneously such as " grain of rice fluid ", " pearling
The Empirical Design that motion theory " etc. instructs rice mill parameter to obtain.Currently, domestic whitening chamber structural parameters acquisition process is still
Above-mentioned Conventional wisdom design method is continued to use, and in terms of its improvement is embodied in Local Property optimization more.Such as Publication No.
From replacing, convenient, work is steady respectively for the patents such as CN204220469U, CN206935782U, CN1695810A and CN102337495A
Fixed and wearability etc. discloses the innovative design method of rice milling sieve, and CN105149032A patent disclosure passes through setting cutter
Mode improve rice milling roller performance.In addition to above-mentioned patent, for essence, the juche idea of traditional design method is according to rice milling roller
Specific yield moving areas determines roll shaft diameter and length dimension, then based on should there are 8-10mm (to be greater than 1 between rice milling sieve and rice milling roller
Grain rice length value) the practical experience knowledge in gap establishes rice milling sieve diameter dimension.However, system is not achieved in the whitening chamber designed accordingly
One pearling effect gently grinds or stone roller happens occasionally again, therefore adjusts the measures such as revolving speed, bin gate resistance as subsequent improvement rice mill
The inevitable link of performance.To find out its cause, traditional whitening chamber design method fails using rice milling sieve and rice milling roller as mutually interconnecting
The entirety of system, and then the structural parameters of both overall plannings.More crucially traditional design method fails to consider pearling simultaneously
The conspiracy relation of room operating parameter and structural parameters.In fact, determining that the key factor of rice milling technology should be in addition to raw material attribute
Gap between rice milling sieve and rice milling roller.Sangameswaran points out to reduce gap once conducive to the generation of frictional action between the grain of rice, and
Increase gap be but conducive to the grain of rice roll in whitening chamber, transposition, realization uniformity mill (U.S. Patent number:
US9314798B2).Thus, when whitening chamber works, the reasonable change form in gap determines the high-quality pearling of rice.It is prior
Being is design point of penetration with the variation of whitening chamber gap, and the defect of Conventional wisdom design method will be improved from principle.This seminar
The work of long campaigns cereal manufacture field is carried out deeply for iron roll rice polisher Mill technique, theory and equipment research and development in recent years
Research, during which based on Agricultural Material Science and numerical computation technology, research holding husk rice effect, the work for instructing whitening chamber design
Cheng Fangfa when research finds that grain of rice group mills in the whitening chamber after designing with specified criteria, can reach consistent shear flow
Behavior, and grain of rice group can reach movement and dynamic similarity.For popular, husk rice axis and rice milling sieve parameter can be different in whitening chamber
Combining form, but similar pearling can be achieved under specified criteria constraint in these parameters between different shapes and the whitening chamber of size
Effect.Based on the above discovery, the whitening chamber Parameters design using behavior similarity criterion as core has been invented by this seminar, to stone roller
The innovation and development of rice machine and similar intracavitary grinding equipment has great importance.
Summary of the invention
Traditional whitening chamber parameter designing there are aiming at the problem that, the present invention researchs and develops a kind of Behavior-based control similarity criterion
Whitening chamber Parameters design reaches specification whitening chamber design technology, realizes consistent pearling effect, similar intracavitary mill is instructed to set
The purpose of standby parameter designing.
The object of the present invention is achieved like this:
(1) it constructs the mathematical model of whitening chamber cavity gap: in conjunction with whitening chamber design feature and working principle, cooperateing with pearling
The structure and operating parameter of room establish whitening chamber cavity gap with the variation function of grinding time, are defined as gap variation
Curve.
(2) it obtains best referring to gap change curve: being referred to the qualitative index of the grain of rice, economic index and commodity after stone roller
It is designated as test index, comprehensive preferred gap change curve, and the gap change curve as best reference.
(3) building of similar code of conduct: the gap change curve based on best reference, using holding gap change curve
Consistent thought obtains the parameter acquiring method of any whitening chamber rice milling roller and rice milling sieve.And it is bent to will acquire identical gap variation
The process of line is defined as similar code of conduct.
(4) similar husk rice effect determines: it is based on similar code of conduct, designs the whitening chamber with different types of structure, with
Rice milling technology metrics evaluation husk rice effect tries hard to make the whitening chamber of design to generate best husk rice behavior and effect.
The present invention is compared to traditional whitening chamber Parameters design, it can be achieved that setting under the premise of the non-equal manufacture than duplication
Reach similar husk rice effect between meter whitening chamber.And realize that the important leverage of this effect is the " behavior that the present invention needs rights protection
Similarity criterion ", i.e., the identical intracavitary gap change curve of whitening chamber.
Detailed description of the invention
Fig. 1 is reverse-flow rice mill and its whitening chamber structure chart；
Fig. 2 is reference and the gap curve figure that two design whitening chambers generate；
Fig. 3 husk rice effect (whiteness) testing experiment flow chart；
Fig. 4 is reference and two design whitening chamber husk rice effect test value figures.
Specific embodiment
(1) construct whitening chamber cavity gap mathematical model: with vertical counterflow formula iron roll rice polisher (SY95-PC+PAE5,
Double dragon machine-building, South Korea) for, whitening chamber structure chart is as shown in Figure 1.Whitening chamber height is indicated in figure with H；Maximal clearance
With minimum clearance respectively with dmaxAnd dminIt indicates；The circumradius of rice milling roller radius and rice milling sieve is respectively with r and RsIt indicates；Just
Polygon rice milling sieve number of edges is indicated with n；Rice milling roller revolving speed is indicated with ω.When whitening chamber works, band of the intracavitary grain of rice in husk rice axis
Dynamic lower generation frictional action, derived from the regular polygon structure of rice milling sieve, intracavitary gap is by dmaxTo dminCyclically-varying is generated, this
It will cause to wipe the cyclically-varying from intensity between the grain of rice, while causing intracavitary grain of rice rolling transposition, conducive to the uniform peeling of cortex,
Therefore, intracavitary gap d substantially decides the pearling effect of the grain of rice, suitable gap variation and rice with the variation of grinding time t
Grain it is high-quality mill it is closely related.For this purpose, intracavitary gap is as follows with the functional expression of grinding time through mathematical derivation:
In formula, mod is cofunction, expression formula modexp1Exp2, as a result expression formula exp2 is divided by institute after exp1
Obtain remainder.
The relationship of the intracavitary gap of formula (1) and grinding time is defined as gap change curve.
(2) it obtains most preferably referring to gap change curve: using grain of rice head rice rate, energy consumption and whiteness after grinding as test index,
Using composite test, by the reverse-flow rice mill pearling cell structure of combined vertical and operating parameter, obtain with best milled
Can whitening chamber, whitening chamber related keyword parameter be shown in Table in 1 reference whitening chamber, and by the whitening chamber work when generate between
It is curve as most preferably referring to gap change curve.The gap variation generated when solid line is referring to whitening chamber work in Fig. 2 is bent
Line.As seen from Figure 2 referring to whitening chamber because of the rotational symmetry of its regular hexagon rice huller screen structure, gap curve shows periodicity
Variation tendency.For husk rice practice, which generates preferable rice milling technology.
(3) building of similar code of conduct: early-stage study discovery generates identical gap variation song between controlling different whitening chambers
Line will generate more consistent husk rice effect.Therefore, the present invention will generate identical gap change curve and be defined as similar behavior standard
Then.And realize and generate consistent gap curve between different whitening chambers, three conditions need to be met: 1. between whitening chamber between maximum or minimum
Gap (dmaxOr dmin) answer it is equal；2. the difference in minimum and maximum gap is answered equal；3. intracavitary gap is by being up to the smallest variation
Rate should be consistent.Substantially, preceding two condition guarantees that the amplitude of periodic intermittent curve is identical, and last condition guarantees that gap is bent
The period of line is consistent.Based on foregoing description, the invention patent need to establish the structure of whitening chamber to be designed and the acquisition of operating parameter
Method generates whitening chamber to be designed also best referring to gap curve as in (2).Therefore, best ginseng is generated in table 1
On the basis of the pearling cell structure and operating parameter of gap curve, the structure and operating parameter formula of whitening chamber to be designed are as follows:
R'=R 's-(Rs-r) (3)
In formula, r', R 'sWith the circumradius and rice milling roller of rice milling roller radius, rice milling sieve that ω ' is whitening chamber to be designed
Revolving speed；r,RsWith the circumradius and rice milling roller revolving speed of rice milling roller radius, rice milling sieve that ω is reference whitening chamber.
The invention is intended to the whitening chambers that two rice huller screen number of edges of additional designs is respectively regular pentagon and regular heptagon, and target is to set
Whitening chamber after meter and the gap change curve referring to being generated between whitening chamber, thus generate similar husk rice effect.Therefore,
Based on above-mentioned behavior similarity criterion, the parameter of this two whitening chamber to be designed can be determined by formula (2)~(4), the results are shown in Table 1 institute
Show.As shown in Fig. 2, with two whitening chambers of this parameter designing the gap curve being almost overlapped will be generated with referring to whitening chamber.
1 whitening chamber design parameter of table
Similar husk rice effect determines: to evaluate the whitening chamber parameter designing side proposed by the present invention based on similar code of conduct
The validity of method needs experimental test design whitening chamber and referring to the husk rice effect between whitening chamber.Test process is not as shown in figure 3,
Grind brown rice raw material, be separately added into 1 parameter of table processing whitening chamber in, after 50s grinding time, brown rice be converted into rice and
Rice bran two parts.The whiteness value of rice is as husk rice Indexes of Evaluation Effect after wherein grinding.
Measure grain of rice whiteness by colour difference meter (DC-P3 type, emerging flash ranging color instrument company of Beijing), i.e., it is prosperous with rice after stone roller
The combination of brightness value (L), red green angle value (a) and champac chromatic value (b) is as grain of rice whiteness index in characteristic degree, and formula is such as
Under:
WI=100- [(100-L)2+a2+b2]0.5 (5)
In formula: WI is grain of rice whiteness after grinding, and it is whiter to be worth the grain of rice after bigger characterization is ground.
It may be noted that test in each whitening chamber filling rate be arranged three levels, respectively 20%, 40% and 60%, often
Group test is in triplicate.
Fig. 4 is test result figure, and as expected, under the conditions of each filling rate, the whitening chamber of design is produced with referring to whitening chamber
More consistent husk rice whiteness is given birth to.For essence, the core of the similar whitening chamber design method of Behavior-based control is to propose control
The method that system generates same chamber internal clearance change curve.In the method, rice milling roller and rice milling sieve are by as being mutually connected in whitening chamber
The component of system carries out collaborative parameters design, and the method is suitable for solving specific type rice mill whitening chamber parameter designing, this method
The outstanding feature having is to can produce similar husk rice effect between whitening chamber to be designed, especially such as " non-than duplication " manufacture.As back
Described in scape technology and summary of the invention, similar intracavitary grinding equipment is generally existing in engineering field, such as pelletizer, mixing machine and powder
Broken machine etc., therefore the present invention also plays reference to the parameter similar Design of other intracavitary grinding equipments.
Claims (1)
1. a kind of whitening chamber Parameters design of Behavior-based control similarity criterion, building rice mill whitening chamber cavity gap is with milling
The mathematical model of time change obtains best clearance change curve by test, then bent with the gap that whitening chamber to be designed generates
It is constraint condition that line is consistent with best clearance change curve, structurally and operationally parameter in collaborative design whitening chamber, it is characterised in that
The behavior similarity criterion refers to that the gap change curve generated between different structure whitening chamber is identical, and the collaborative design is
Refer to structural parameters (roller shaft diameter, polygon rice milling sieve number of edges and its circumscribed circle diameter) and operating parameter (revolving speed) in whitening chamber
It unified under the constraint of similarity criterion should obtain, rather than be independently determined.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939773A (en) * | 2019-04-28 | 2019-06-28 | 长沙荣业智能制造有限公司 | Collaboration husk rice method, system, cooperation relation determine method and husk rice system |
| CN111104730A (en) * | 2019-06-17 | 2020-05-05 | 河南工业大学 | Method for quickly judging rice whitening degree based on whiteness |
| CN113365731A (en) * | 2019-02-08 | 2021-09-07 | 株式会社佐竹 | Operation auxiliary device for grinding equipment and grinding equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113365731A (en) * | 2019-02-08 | 2021-09-07 | 株式会社佐竹 | Operation auxiliary device for grinding equipment and grinding equipment |
| CN113365731B (en) * | 2019-02-08 | 2022-07-22 | 株式会社佐竹 | Operation auxiliary device for grinding equipment and grinding equipment |
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| CN111104730A (en) * | 2019-06-17 | 2020-05-05 | 河南工业大学 | Method for quickly judging rice whitening degree based on whiteness |
| CN111104730B (en) * | 2019-06-17 | 2023-04-07 | 河南工业大学 | Method for quickly judging rice whitening degree based on whiteness |
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