CN211070201U

CN211070201U - Milling equipment for milling rice by mixed fiber medium

Info

Publication number: CN211070201U
Application number: CN201921961426.8U
Authority: CN
Inventors: 谢仁和; 葛隆艺; 葛隆午
Original assignee: Fuzhou Weiyou Technology Co ltd
Current assignee: Fujian Zhongyi Manufacturing Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-07-24
Anticipated expiration: 2029-11-14

Abstract

The utility model discloses a grind equipment of system rice of mixed fiber medium, include: hulling device (2), connecting device (7), grinding equipment (6), connecting device (7) and sorting facilities (3), its characterized in that: the hulling device (2) is directly connected with the grinding equipment (6) through a connecting device (7), and the sorting equipment (3) is arranged behind the grinding equipment (6); the utility model has the advantages of improve the husk rice effect, avoid the rice embryo damage of husk rice in-process, simplify rice processing technology and equip, reduce rice processing loss, adjust rice quality, energy saving etc.

Description

Milling equipment for milling rice by mixed fiber medium

Technical Field

The invention relates to the field of grain processing methods, processing technologies and processing equipment, in particular to a brown rice processing method, processing technology and processing equipment.

Background

As the prior art, the rice processing industry is widely applied and mature at present, and the processing technology comprises the following steps: cleaning paddy (including removing organic impurities, stones, heavy impurities and the like), hulling paddy (hulling paddy and hulling), separating paddy from brown rice, milling paddy, polishing, finishing white rice (including screening, color sorting and the like), and packaging to obtain the finished product.

In the process, the rice cleaning part comprises organic impurities, fine dust, shriveled rice and the like, and is generally treated by adopting equipment such as a cylinder primary cleaning sieve, a vibration cleaning sieve and the like; treating small stones, stones and the like by a stone remover; the rice hulling adopts a rice huller for processing, and the prior rice huller is additionally provided with a negative pressure separation device which can directly suck the hulled rice hulls away through negative pressure to separate the hulled rice hulls from the brown rice; separating brown rice from unhulled rice by using a gravity brown rice separating sieve; then, the clean brown rice is sent into a rice mill to mill the seed coats of the brown rice (the process generally adopts a sand roller or an iron roller rice mill to carry out multi-milling processing); then polishing the rice after being whitened by a polishing machine, removing bran powder adhered to the surface and improving the surface gloss of the rice grains; then the rice is finished and packaged.

Chinese patent No. 2010101230426 discloses a soft type rice polishing roller, which is characterized in that: polishing convex bodies (3) are distributed on the polishing roller barrel body (1) according to a certain mode, the polishing convex bodies (3) are 1/4 of a sphere, and the polishing convex bodies (3) are fixed on the polishing roller barrel body (1) in a welding mode and are distributed in a point-shaped arrangement mode; the spherical surface orientation of the polishing convex body (3) is consistent with the rolling direction of the polishing roller barrel body (1); and, the excessive pressure generated in the local area is relieved by the spherical surface of the convex polishing body (3) and the gap between the convex polishing bodies (3).

The Chinese patent application No. 2014106636792 discloses a flexible rice mill with sand balls and a rice milling method with grain media, and the rice mill has the technical key points that: the frame 8 is provided with a machine shell consisting of a machine barrel base 21, an external barrel 3 and a machine cover 2, the internal sides above the machine barrel base 22 and the internal sides of the external barrel 3 are provided with carborundum internal barrels 4, and a hollow shaft 5 which is arranged through a bearing combination 20, an upper end sealing combination 22, a lower end sealing combination 17 and a bearing cover 19 is arranged in the machine shell; a material throwing disc 23 is arranged at the top end of the hollow shaft 5; a plurality of blades 6 are symmetrically and uniformly arranged on the outer surface of the hollow shaft. The grain medium rice milling method comprises the working sections of quality proportioning of grains and sand balls, conveying of mixed materials, flexible rice milling of the sand balls, lifting of the mixed materials, flexible rice milling of the sand balls again, grading of a mixture of the grains and the sand balls, finishing of finished products, recycling and recycling of the sand balls and the like. The invention has the advantages that: the rice mill has simple structure, large milling contact area, low pressure in the rice milling chamber, low rotating speed, low rice crushing rate and high rice yield.

The Chinese patent application No. 86202940, impeller type rice huller with a novel device for separating brown rice and rice husks, discloses an impeller type rice huller with a novel device for separating brown rice and rice husks. The separating device for brown rice and chaff of the machine consists of a separating chamber, a rice outlet and a chaff discharge pipe. The brown rice and the chaff are separated by the cooperation of cyclone rotation and gravity sedimentation.

The Chinese patent application No. 2018217778131 discloses a rice huller rice hull separating device, relates to the field of rice hullers, and comprises a machine body, a feeding port, a discharge port and an air port which are communicated with the machine body, wherein the air port is connected with a draught fan, the machine body comprises a rice hull separation area and a rice hull collection area, two partition plate groups are arranged between the rice hull separation area and the rice hull collection area, the discharge port is arranged at the bottom of the rice hull separation area, and the air port is arranged at the bottom of the rice hull collection area. The utility model discloses get into rice huller rice husk separator's rice husk disengagement zone with chaff and corn from the dog-house in the rice huller rice husk separator, stop, collide many times through the baffle in the rice husk disengagement zone, make the chaff separate from the corn, the chaff collecting region bottom that sets up in rice husk disengagement zone one side is provided with the wind gap, the wind gap is connected with the fan of constantly bleeding, because the chaff is lighter, can be by the suction that the fan produced, collect the chaff collecting region in, collect the discharge through the fan, realize the separation of corn and chaff.

The invention discloses a rice hulling and milling integrated machine with Chinese patent application number 2018112835819, and relates to the field of agricultural product processing machinery, wherein the rice hulling and milling integrated machine comprises a rice hulling structure and a rice milling structure, wherein rice sequentially passes through a hopper, a rice hulling device, a rice hull separating device and a rice milling device; the hopper and the rice hull separating device are arranged above the rice hulling device and the rice milling device; the hopper is respectively communicated with the rice huller and the rice milling device through pipelines, and a flow divider is arranged on the pipelines. According to the invention, unhulled rice enters the rice huller from the hopper to be hulled, the hulled rice is sucked into the rice hull separating device from the rice huller through the fan, rice grains are separated from rice hulls, the separated rice grains enter the rice huller to be milled into fine rice, and the processing efficiency of rice processing is greatly improved.

The multilayer monomer gravity grain separator with application number 902130021 discloses a multilayer monomer gravity grain separator which is improved on the basis of the original 5-7 layers of monomer gravity grain separator, because of adopting a wide and short machine base, a multilevel layer, a small layer height and a wide supporting scheme, in particular to a balancing wheel adopting a lead filling weighting method, the design is more reasonable, the multilayer monomer gravity grain separator has high single machine yield, small volume, stable operation and low grain returning roughness. The method is used in rice factories producing 60-80 tons of rice per day, and has good economic benefit.

Thesis "physical and chemical properties of rice hull and progress of comprehensive utilization thereof" black longjiang agricultural science 2017 (3): 147-151, middle graph classification number: s38 document identification code: article a No.: 1002-2767 (2017) 03-0147-05 DOI: 10.11942/j. issn 1002-2767.2017.03.0147-physical and chemical properties of rice hulls are described: through natural evolution for years, a unique nano porous silicon dioxide layer is formed in rice hulls, and amorphous SiO 2 is mainly concentrated on the outer surface and is distributed on the inner surface of the rice hulls in a small amount [ 17 ]. Rice hulls have the advantages of good toughness, porosity, hard surface, high calorific value and the like, but also have the defects of uneven surface, more burrs, small density, difficult stacking and the like [ 18 ]. The rice husk is generally 5-10 mm long, 2.5-5.0 mm wide and 25-30 μm thick, and is mostly yellow, golden yellow and yellow brown, and its real density and natural bulk density are about 720 kg.m-3 and 83-160 kg.m-3 [ 19 ], respectively. The rice hull is mainly composed of C, O, H and Si, and its components are mostly cellulose, lignin and silicon, and its contents (different according to species and producing area) are: 35.5 to 45.0 percent of crude fiber (16 to 22 percent of condensed pentose), 21 to 26 percent of lignin, 10 to 21 percent of silicon dioxide and 11.4 to 22.0 percent of ash content [ 20 ].

The fourth description of the rice mill working principle is that the national standard of the people's republic of China-GBT 26897-2011 iron roller rice mill: the brown rice enters a whitening chamber of the rice mill by a feeding device, and the skin layer on the surface of the brown rice is removed under the friction action generated by a rotating grinding roller, so that the white rice with certain precision is milled. The rice grains after being milled are discharged out of the machine through a discharge port, and the rice bran powder after being milled is discharged through a rice sieve. "

Description of the working principle of the rice mill in the fourth national standard of the people's republic of China-GBT 35322-2017 emery roll rice mill: the brown rice enters a whitening chamber of the rice mill through the feeding device, and the grinding effect is continuously exerted on the cortex of the brown rice by the aid of the abrasive edges of hard sharp carborundum dense on the surface of the roller shaft of the carborundum rotating at a high speed, so that the cortex is broken and falls off, and the brown rice is ground into white rice with certain precision. The rice grains after being milled are discharged out of the machine through a discharge port, and the rice bran powder after being milled is discharged through a rice sieve. "

The definition of the polishing machine in item 3.1 of national Standard of the people's republic of China-GBT 34788-2017 Rice polishing machine "machine for removing bran powder adhered to the surface of rice grains and improving the surface smoothness of rice grains". "; the fourth description of the working principle of the polishing machine: the rice in the polishing machine is subjected to the rotating friction of the polishing roller, the stirring brush and the mutual friction among the rice grains under certain pressure, so that the effects of removing bran powder adhered to the surfaces of the rice grains and improving the surface gloss of the rice grains are achieved, and in order to increase the polishing effect, a proper amount of water which meets the requirements of GB5749 can be added before the rice grains enter the polishing machine or at the same time of polishing. "; article 7.3 Definitions for Polisher feed stock "stock meets first-class rice as specified in GB/T1354".

The 3.1 definition of semi-finished rice in the 3 rd article of the national standard of the people's republic of China, GB _ T1354-2018 for GB/T1354-2009 Rice "brown rice is an intermediate product which can meet the requirements of the standard after certain production and processing and further processing in the rice processing process. "; 3.5.1 definition of finish grinding "Back furrow is basically without skin, or skin is not formed into line, and the removed rice embryo and grain surface skin layer accounts for 80-90%; "; 3.5.2 definition of proper grinding that the back ditch has skin, the residual of the grain surface skin layer is not more than 1/5 and accounts for 75-85 percent, and the grain with embryo in the high-quality polished round-grained rice is less than 20 percent; or a skin retention degree (3.5.3) of 2.0% -7.0% "; article 3.6.5 definition of brown rice "Rice grains which have been dehulled without any dehulling at all".

"design Specification (draft of comments) of Rice processing enterprises," 6.2.9 definition of Rice milling section, "setting two to four whitening steps generally, the specific number of steps depends on the raw material variety, quality and product quality requirements"; the definition in article 6.2.10 for the white rice finishing section "generally includes the steps of classifying white rice, selecting white rice, brushing (including polishing), color sorting white rice, compounding rice, etc.".

As the existing rice processing technology, there are several characteristics:

a. Processing paddy into brown rice, wherein a rice huller is a general technology, and various rice hullers are used for exploring a separation method of the rice hulls and the brown rice after rice hulling; in the rice hulling step, husked and separated brown rice containing no rice hull is desired; the rice hulls need to be separated by a complicated mechanical structure, an air suction net and a dust removing device.

b. The rice huller generally cannot completely hulle the rice, so after the rice huller hulles and removes the rice hull, the remaining mixture of the brown rice and the rice needs to be screened again (the rice is separated by the gravity rice separator and returned to the rice huller for hulling again); the pure brown rice is screened out and then processed in the next step; the process flow is complex, and a plurality of working procedures of back hulling and back screening are needed.

c. The raw material of the rice mill is pure brown rice obtained in the last step, whether the rice mill is a sand roller rice mill, an iron roller rice mill or a sand ball medium rice mill.

d. As for the 'flexible rice mill with sand balls and a rice milling method with grain medium', the flexible rice mill has certain advantages in improving the rice milling efficiency, but the flexible rice mill needs to be added with sand balls subsequently as medium to be mixed with pure brown rice; after the processing is finished, special equipment is needed to screen out the sand ball medium, and the method has the defects of complex process, complicated equipment, high processing cost and the like, and is not beneficial to application and popularization.

In summary, although the existing rice processing technology is mature and the processing quality is relatively stable, many complicated processing steps, complicated processing equipment and complicated process flows still exist.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a method for grinding rice by mixing fiber media or a simplified method and grinding equipment; the method for grinding the rice by the mixed fiber medium is characterized by comprising the following steps: mixing the fiber medium with brown rice according to a certain proportion, and then putting the mixture into rolling equipment for rolling; the fiber medium is rice hulls or a rice hull-like medium or other medium prepared for obtaining byproducts, and the physical properties of the rice hull-like medium are shown as follows: granular, with good toughness (flexible cushioning properties), hard surface, uneven surface, more burrs, liquid adhesion, for example: rice husk, rice, sawdust, bamboo bits, crushed straw, crushed rice straw, crushed fruit shells, crushed bark, crushed fruit pits, and the like, wherein the other media comprise: animal hair, animal broken bones or broken shell particles and the like, wherein rice hulls are used as an optimal medium; the mixing proportion (weight proportion) is 2-20% in general by taking rice hulls as an example, and different mixing proportions can be selected according to actual processing requirements and processing strength; the milling equipment can use a sand roller rice mill, an iron roller rice mill, a rice twisting machine, a rib polishing machine, a ball milling polishing machine and the like in the prior art, wherein the effect of the ball milling polishing machine is optimal.

The simplified method for grinding the rice by the fiber medium is characterized by comprising the following steps: husking the rice by using a husking device 2 to obtain a mixture (hereinafter referred to as a rice husk and coarse mixture) consisting of the brown rice, the rice husks and the rice, directly putting the mixture into a grinding device 6 for kneading and grinding, using the rice husks or the rice as a medium to assist in kneading and grinding so as to improve the rice grinding effect (namely, the brown rice is peeled), and sorting after finishing the grinding process to select finished rice.

The equipment for grinding the rice by the fiber medium comprises the following steps in process sequence: hulling device 2, grinding equipment 6, sorting unit 3, its characterized in that: the husking device 2 can be used without a rice husk separating system 21, the milling equipment 6 is provided with a rice rubbing roller with a repeated rubbing function, for example, a 'soft type rice polishing roller' with the Chinese patent No. 2010101230426, a sand roller rice mill, an iron roller rice mill, a rice rubbing machine, a rib polishing machine and the like in the prior art can be used, but the effect is poor, the sorting device 3 is used for sorting finished rice, and equipment such as a gravity grain rough separating screen in the prior art can be used.

The invention is realized by the following modes:

As a first aspect, the invention provides a method for milling rice by mixing fiber media, which is characterized in that: mixing the fiber medium with brown rice according to a certain proportion, and then putting the mixture into rolling equipment for rolling; the fiber medium is a rice hull-like medium or other medium prepared for obtaining byproducts, and the physical properties of the rice hull-like medium are as follows: granular, with good toughness (i.e. flexible cushioning properties), hard surface, uneven surface, more burrs, liquid adhesion, for example: rice husk, rice, sawdust, bamboo bits, crushed straw, crushed rice straw, crushed fruit shells, crushed bark, crushed fruit pits, and the like, wherein the other media comprise: animal hair, animal broken bones or broken shell particles and the like, wherein rice hulls are used as an optimal medium; the mixing proportion (weight proportion) is 2-20% in general by taking rice hulls as an example, and different mixing proportions can be selected according to actual processing requirements and processing strength; the milling equipment is preferably a ball mill polisher with repeated kneading function, such as a ball mill polisher equipped with a "soft type rice polishing roller" of chinese patent No. 2010101230426, and prior art sand roller rice mill, iron roller rice mill, rice kneader, rib polisher, etc. can be used, wherein the effect of the ball mill polisher is the best.

Preferably, the fiber medium mixing ratio (weight ratio) is 2% to 10%.

Preferably, the fiber medium mixing ratio (weight ratio) is 5% to 20%.

Preferably, the fiber medium mixing ratio (weight ratio) is 15% to 35%.

Preferably, the fiber medium mixing ratio (weight ratio) is 25% to 50%.

Preferably, the fiber medium can directly obtain the feed byproduct mixed with the bran powder when being mixed with animal broken bones or broken shell particles according to the feed formula for use.

Preferably, other organic media are mixed in to obtain other quality by-products.

As a second aspect, the present invention provides a simplified method of milling rice with a mixed fiber medium, comprising the steps of:

Step s 001: husking the paddy by using a husking device 2 to obtain a paddy shell and brown rice mixture consisting of the brown rice, the paddy hull and the paddy, wherein the step is generally finished by a rice huller, the husking rate of the current rice huller can reach 80-95 percent, for example, 90 percent, and the weight ratio of the obtained paddy shell and brown rice mixture is as follows: about 85% of brown rice, about 5% of rice husk and about 10% of rice;

Step s 002: directly putting the mixture of the rice husks into a milling device 6 for kneading and milling to obtain a mixture of the white rice and the rice, grinding the rice husks under the assistance of kneading and milling in the process, mixing the ground rice with bran powder (rice bran), and collecting the mixture by a rice bran separation system 61;

Step s 003: and (4) putting the mixture of the white rice and the paddy obtained in the step s002 into a sorting device 3 to sort out finished rice products, wherein the sorted finished rice products can be subjected to subsequent finishing processing, and the paddy is sent back to the hulling device 2 in the step s001 to hulle again.

Preferably, when the step s002 is carried out, water can be sprayed on the materials in the grinding equipment 6 according to needs, so that the surface humidity of the rice hulls is increased, the seed coats of the brown rice are soaked, and the kneading effect is improved; the process simulates the wet towel to wipe off impurities on the surface of the wet object, and the husking (grinding) effect of the brown rice is effectively improved.

Preferably, step s002 can be performed for a number of times not limited to one, and can be performed for a number of times according to the processing requirements, generally 2-6 times.

Preferably, the milling apparatus 6 is operated to crush and extract the hulls, so that the step s002 is performed several times, and the processing material may be mixed with the hulls again in a certain proportion as required to be processed by kneading.

As a third aspect, the present invention provides a milling apparatus for a simplified method of milling rice with a mixed fiber medium, the apparatus comprising in process order: hulling device 2, connecting device 7, grinding equipment 6, connecting device 7, sorting unit 3, its characterized in that: the husking device 2 can be used without a rice husk separating system 21, the milling equipment 6 is provided with a roller body with a repeated kneading function, for example, a 'soft type rice polishing roller' with the Chinese patent No. 2010101230426, a sand roller rice mill, an iron roller rice mill, a rice rubbing machine, a rib polishing machine and the like in the prior art can be used, but the effect is poor, the sorting device 3 is used for sorting finished rice, and equipment such as a gravity grain separating screen in the prior art can be used.

Preferably, the connecting device 7 is used for connecting the hulling device 2, the milling equipment 6 and the sorting device 3 in series, and the three devices can be installed in a stepped mode, so that the connecting device 7 is omitted.

The above features supplement the description:

A connecting device: a common series of equipment for use in grain processing engineering applications includes: a lifter, a belt conveyor, a screw conveyor and the like, and is matched with accessories such as a chute, a receiving hopper and the like for use.

Step-type installation: in the application of grain processing engineering, processing equipment generally adopts upper feeding and lower discharging; therefore, the installation mode that the discharge port of the previous process equipment is directly butted with the feed port of the next process equipment is called stepped installation.

Gravity grain and brown rice separating screen: in the prior art, the device is applied to a rice huller and then used for screening out a mixture of husked rice and paddy after the husking and cleaning of the rice huller.

Rice huller: equipment for rice husking in the prior art needs to be matched with a rice husk separation system for use, generally in a negative pressure air suction mode, and rice husks are extracted from a rice husk and brown mixture.

Other media formulated to obtain byproducts: in the rice milling process of rice processing, the rice seed coats which are milled are called bran powder (rice bran), and the bran powder is often used for feed processing and the like as a byproduct; in the feed processing process, the nutritional ingredients of the bran powder need to be blended, such as: adding animal bone fragments, shell fragments of shellfish, etc., for supplementing calcium and salt; therefore, special components beneficial to the rice twisting process can be pre-mixed into the rice twisting medium by using the rice twisting technology in the processing process of the invention, so that the obtained by-product is directly molded, and the subsequent by-product processing steps are saved.

Rice hull-like medium: the granular fiber medium is a fiber medium with physical properties close to those of rice hulls, and has the advantages of good toughness (namely flexible buffer performance), hard surface, uneven surface, more burrs and liquid adhesive force; more specifically, the rice hull-like medium is a fibrous medium rich in cellulose, lignin and silicon; common rice hull-like media currently known include: rice, sawdust, bamboo shavings, crushed straw, crushed rice straw, crushed fruit shells (such as coconut shells and peanut shells), crushed bark, crushed fruit pits (such as walnut sands) and the like.

And (3) granulation: the granular particles referred to in the present invention are regular or irregular solid particles having a diameter of 1 to 20 mm.

Toughness: the concept of physics, which refers to the ability of a material to absorb energy during plastic deformation and rupture; the rice has good toughness, can provide grinding force of rice seed coats in the process of mixing with brown rice and can play a role in buffering to protect rice grains when being stressed.

Hard surface: the surface of the brown rice seed coat is hard, so that the brown rice seed coat can be ground and is not easy to damage.

Liquid adhesion: the surface of the medium can adsorb liquid to reach a certain degree of wetness; the liquid referred to in the present invention is typically water.

In summary, the present invention provides a method for milling rice with a mixed fiber medium, which is characterized in that: mixing the fiber medium with brown rice according to a certain proportion, and then putting the mixture into rolling equipment for rolling; meanwhile, a simplified method and a milling device for milling rice by using the mixed fiber medium are provided; the invention has the advantages of improving the rice milling effect, avoiding the damage of rice embryo in the rice milling process, simplifying the rice processing technology and equipment, saving energy and reducing the loss, and the like.

Drawings

FIG. 1 is a schematic flow diagram (top view) of a prior art rice processing process;

FIG. 2 is a schematic view (top view) of a process for kneading rice according to the present invention;

FIG. 3 is a schematic view of a rice-kneading roller with repeated kneading function;

FIG. 4 is a schematic view of a soft type rice polishing roll;

FIG. 5 is a schematic view of the equipment involved in the rice rolling process of the present invention;

FIG. 6 is a schematic view of the stepwise installation of equipment involved in the rice rubbing process of the present invention;

FIG. 7 is a schematic diagram of the method of the present invention.

Detailed Description

The embodiments of the invention will now be described in detail with reference to the accompanying drawings:

As shown in fig. 7 in combination with fig. 3 and 4, a method for milling rice by mixing fiber media is characterized in that: mixing the fiber medium with brown rice according to a certain proportion, and then putting the brown rice into a rice rolling device for rolling and grinding; the fiber medium is rice hulls or a rice hull-like medium or other medium prepared for obtaining byproducts, and the physical properties of the rice hull-like medium are shown as follows: granular, with good toughness (i.e. flexible cushioning properties), hard surface, uneven surface, more burrs, liquid adhesion, etc., for example: rice husk, rice, sawdust, bamboo bits, crushed straw, crushed rice straw, crushed fruit shells, crushed bark, crushed fruit pits, and the like, wherein the other media comprise: animal hair, animal broken bones or broken shell particles and the like, wherein rice hulls are used as an optimal medium; the mixing ratio (weight ratio): taking rice hulls as an example, the rice hulls are generally 2% -20% different, and different mixing ratios can be selected according to actual processing requirements and processing strength; the rice-rolling device is preferably a rice-rolling machine with repeated rolling function, such as a ball-milling polisher equipped with a "soft type rice polishing roller" of chinese patent No. 2010101230426, and a sand roller rice mill, an iron roller rice mill, a rice-rolling machine, a rib polishing machine, etc. of the prior art can be used, wherein the effect of the ball-milling polisher is the best.

The brown rice is kneaded after being mixed with the fiber medium, so that the grinding effect (seed coat separation) of the brown rice can be effectively improved; the grain shape, the hard surface, the uneven surface and more burrs are beneficial to the peel rubbing; the rice fiber has good toughness (namely flexibility and buffering performance), can effectively avoid scratching and over-grinding the surface of rice grains, has liquid adhesive force, can effectively improve the efficacy of a fiber medium, simulates the effect of scrubbing the surface of an object by a wet towel, and effectively improves the appearance and the texture of rice; at the present stage, the selection of the fiber medium is the most ideal from the aspects of raw material acquisition, use effect and sorting treatment after use.

In the prior art, after rice husking, brown rice separation is carried out, pure brown rice is put into a rice mill to be milled (seed coat milling), the surface of rice grains is damaged in the milling process, and rice bran can be remained at the same time, so that the milled white rice needs to be further polished for treating the rice bran remained on the surface of the white rice and flattening the damage, and therefore, in the prior art, the polished white rice is quite large in actual loss; according to the method, the fiber medium is used as the auxiliary abrasive, particularly the rice hulls are used as the medium, so that the seed coats can be effectively ground, and the grinding is soft and is not easy to damage the surfaces of the rice grains; the rice grain surface can be effectively improved by the aid of water spraying, and the subsequent treatment processes such as polished rice and the like can be even omitted while the traditional rice milling process is replaced.

Preferably, the fiber medium mixing ratio (weight ratio) is 2% to 10%.

Taking rice hulls as an example: for indica rice, the long grains and the removed rice hulls are also in a strip shape, and the fluidity is deviated during processing, so that the mixing proportion of the long grains and the removed rice hulls is properly lower to achieve a good rice twisting effect, and tests prove that the longer the indica rice, the smaller the proportion of the rice hulls which can be mixed is, and the proportion is generally 2-10%.

Preferably, the fiber medium mixing ratio (weight ratio) is 5% to 20%.

Taking rice hulls as an example: for japonica rice, the grains are short or round, and the influence of the fallen rice hulls on the fluidity of the mixture is smaller than that of indica rice, so the proportion of rice hulls capable of being mixed can be more, and the rice hulls can be mixed by 5-20 percent generally.

The fiber mixing proportion of the indica rice or the japonica rice is different according to different rice twisting equipment; generally speaking, the larger the rice rubbing chamber in the rice rubbing device, the higher the proportion of mixable rice hulls, and the higher the rotation speed of the rice rubbing device, the higher the proportion of mixable rice hulls.

Preferably, the fiber medium mixing ratio (weight ratio) is 15% to 35%.

For some fiber media with larger specific gravity, such as broken nut shells, hard bark powder and the like, the mixing ratio is properly increased; for example, walnut sand is mixed with 20-30% of the total weight to achieve good kneading effect.

Preferably, the fiber medium mixing ratio (weight ratio) is 25% to 50%.

When other media or mixed media are used for obtaining the byproducts, more fiber media are usually used according to the formula of the byproducts, the specific gravities of the media are different, and the comprehensive adding proportion is generally between 25% and 50%.

Preferably, the fiber medium is mixed with animal bone or shell particles according to a byproduct formula, and a feed byproduct mixed with the bran powder can be directly obtained.

Preferably, the method of the invention achieves good results, thanks to the invention of a ball mill polisher with a repeated kneading function, on the basis of which the relative equipment more suitable for the method of the invention can be further developed.

Referring to fig. 1 and 2, the present invention provides a simplified method for milling rice with a mixed fiber medium, which comprises the following steps:

Compared with the prior art, the rice hull separation system 21 can be generally omitted in the step;

The obtained chaff and brown mixture can be used for partially separating the rice hulls or paddy in the mixture according to the actual processing requirement so as to obtain a more proper mixture proportion for the subsequent kneading processing;

Generally, the unhulled rice entering the hulling device 2 is cleaned by the unhulled rice cleaning equipment 1;

Step s 002: directly putting the mixture of the rice husks into a milling device 6 for kneading and milling to obtain a mixture of the white rice and the rice, grinding the rice husks under the assistance of kneading and milling in the process, mixing the ground rice with the bran powder, and collecting the mixture by a rice bran separation system 61;

The prior art process not only needs the rice hull separation in the previous step, but also needs the sorting equipment 3 to separate the rice, and then the obtained clean brown rice can be put into the rice milling equipment 4 for rice milling processing, and the rice bran is collected by the rice bran separation system 41;

Step s 003: putting the mixture of the white rice and the paddy obtained in the step s002 into a sorting device 3 to sort out finished rice products, wherein the sorted finished rice products can enter a subsequent white rice finishing working section 5 for processing, and the paddy is sent back to the hulling device 2 in the step s001 for hulling again; in this case, the separated rice is generally smaller than the rice grains subjected to primary husking or the hull is partially damaged, so that in practical applications, users may collect and dispose the rice separately, for example, collect the rice and then process the rice for a second time or process the rice into low-quality products separately.

Preferably, during the processing in the step s002, the materials in the milling equipment 6 can be sprayed with water according to requirements so as to improve the kneading strength and the kneading effect of the rice hull medium; the rice hulls after water absorption can simulate a wet towel to scrub the surfaces of the brown rice, so that the seed coat scrubbing and separating effect can be effectively improved, the quality of rice is adjusted, and the surface temperature of the rice grains is reduced.

In the prior art, because the rice milling device 4 generally grinds the surface of brown rice by a sand roller or an iron roller, the milled white rice generally has higher temperature, and most of the white rice is temporarily stored with a process of cooling rice before entering the white rice finishing section 5; the process has the effects of conditioning and cooling, and the rice temperature does not change greatly before and after kneading.

Preferably, the rice husks are crushed and extracted when the rice husks rubbing machine 6 works, so that the step s002 is executed for a plurality of times, and the processing raw materials can be mixed with the fiber medium, mainly the rice husks, according to a certain proportion again.

As shown in fig. 5 and 6, the present invention provides a simplified method for milling rice with mixed fiber medium, which relates to a milling device, wherein the device comprises the following components in the process sequence: hulling device 2, connecting device 7, grinding equipment 6, connecting device 7, sorting facilities 3, its characterized in that: the husking device 2 can be used without a rice husk separating system 21, the milling equipment 6 is provided with a roller body with a repeated kneading function, for example, a 'soft type rice polishing roller' with the Chinese patent No. 2010101230426, a sand roller rice mill, an iron roller rice mill, a rice rubbing machine, a rib polishing machine and the like in the prior art can be used, but the effect is poor, the sorting equipment 3 is used for sorting finished rice, and equipment such as a gravity grain rough separating screen in the prior art can be used.

As shown in fig. 3, the roller body with the repeated kneading function is provided with a convex rib 611 for stirring the material to advance, the convex rib 611 has a reverse pushing surface 612 in the direction opposite to the material movement direction, and has a forward pushing surface 613 in the same direction as the material movement direction, and the convex rib 611 is used for enabling the material to reciprocate in the grinding chamber, so that the repeated kneading is realized.

Preferably, the connecting device 7 is used for connecting the hulling device 2, the milling device 6 and the sorting device 3 in series, and three devices can be installed in a stepped mode.

In summary, the present invention provides a method for milling rice with a mixed fiber medium, which is characterized in that: mixing the fiber medium with brown rice according to a certain proportion, and then putting the mixture into rolling equipment for rolling; meanwhile, a simplified method and a milling device for milling rice by using the mixed fiber medium are provided; the invention has the advantages of improving the rice milling effect, avoiding the damage of rice embryo in the rice milling process, simplifying the rice processing technology and equipment, reducing the rice processing loss, adjusting the rice quality, saving energy and the like.

Claims

1. A milling apparatus for milling rice with a combination of fiber media, comprising: hulling device (2), connecting device (7), grinding equipment (6), connecting device (7) and sorting facilities (3), its characterized in that: the hulling device (2) is directly connected with the grinding equipment (6) through a connecting device (7), and the sorting equipment (3) is arranged behind the grinding equipment (6).

2. A milling apparatus for milling rice with a combination of fiber media, as claimed in claim 1, wherein: the roller body that grinding equipment (6) installation has the function of rubbing repeatedly, sorting equipment (3) are used for selecting separately finished product rice.

3. A milling apparatus for milling rice with a combination of fiber media, as claimed in claim 1, wherein: the connecting device (7) is used for connecting the hulling device (2), the grinding device (6) and the sorting device (3) in series or mounting the hulling device (2), the grinding device (6) and the sorting device (3) in a stepped mode.