CN108452887A - A kind of gravity mill - Google Patents

Abstract

Gravity mill is exactly the milling machinery of frictional force when being converted to milling using the gravity of upper millstone, gravity mill is divided into stone gravity mill and iron-stone mill, the former is applicable in domestic consumer, the latter is applicable in processed user, iron-stone grinding stone head is matrix, grinding is cast iron or cast steel material, since motor is capable of providing relatively uniform rotating speed, and the gravity of matrix stone is changeless, frictional force is more constant compared with stone mill and mechanism mill when iron-stone mill milling, therefore, the product fineness uniformity of processing is high, processing temperature is low, the usage time of grinding is long, the well mechanism mill of the product mouthfeel of processing.

Description

A kind of gravity mill

Technical field

The present invention relates to a kind of food processing equipment, specifically a kind of food milling/defibrination machinery..

Background technology

Some current food processing producers are all the food using mechanization due to the development of mechanization and scale Milling equipment is processed, and milling equipment includes mainly flour mill, high sub-sieve, wheat flour purifier, bran finisher, powder feeding machine etc..Flour mill Main shaft carries out lappingout fine grinding using centrifugally cast steel grinding roller, and shelling carries out the high pressure of compaction type using the steel-tooth roller of aligned orderly Big to measure powder, the running speed of flour mill is fast, and steel roll temperature is high, and speed is 500 ~ 800r/min, temperature up to 120 degree or so, Since steel rider grinding is excessively strong, Wen Taigao is ground, causes the nutriments such as the protein in food largely to lose, in order to improve powder The color and luster of shape food, mouthfeel, food enterprise largely use various food additives, for pursuing health and pure natural modern For, various food additives are not satisfactory, what Chemical Industry Press in 2008 published《Cereal processing technology》Just once Through pointing out, mechanism powdered food is larger to the nutrient loss of some non-refractories, according to statistics, in flour processing, vitamin C, vitamin B1, vitamin B2, vitamin B3 and Zn have 70% loss, folic acid to have 40% loss, in addition, in mechanism flour For protein damage than more serious, starch can partly form dextrin at high temperature, cause following process or it is edible when chewiness dropped It is low, in order to keep chewiness, need that potassium bromate or benzoyl peroxide is added（Author's Gu Pengcheng, Hu Yong）.

The traditional milling machinery in China is stone mill, and stone mill manpower or animal power either waterpower drive, by stone mill grain Food peeling or grind into powder, stone mill be usually made of the identical roundstone of two outside diameters, above be upper millstone, below Be lower millstone, there is navel and chamber between upper lower millstone, navel is exactly central shaft, and chamber is work durm, central shaft around Work durm rotates, and to prevent central shaft direct friction stone, roll flute is all carved on upper millstone and lower millstone, grain passes through upper millstone On blanking hole enter in the mill thorax between two layers mill, migrate outward along roll flute, it is levigate by the mill pin of upper and lower roll flute, Gradually form powder.

Rotating speed is fast, mill temperature is high, nutritive loss is big when mechanism mill mill pin, and mouthfeel is pure not as good as what stone mill was processed, and stone mill turns Speed is again too low, causes frictional resistance very big, stone finite stiffness itself, and when using power transmission, roll flute is lost quickly, stone mill work It is low to make efficiency.

It is then to complete manually turn a millstone action, stone mill itself and tradition with robot in column that in CCTV, first I, which likes invention, Stone mill is not different, and robot involves great expense, and easy break-down, is not easy to show technological merit, because of purchase cost and dimension Shield cost is the important consideration of consumer.

Invention content

Technical characteristic：A kind of gravity mill, it is characterized in that：

Gravity mill is mainly made of mill frame, upper millstone, lower millstone, feed hopper, discharge bucket, transmission device, motor, protective cover,

The mill frame is the holder of gravity mill, other parts are all disposed on mill frame；

The upper millstone is divided to two kinds, and one is stone mills, and one is iron-stone mill, stone mill is to dig stone processed by chisel, on Mill is connected by location hole with driven gear, and motor drives driving gear, driving gear to drive driven gear, driven gear Upper millstone rotation is driven, raw-food material is from feed opening 1 along excessive slot 1 to feed opening 2, and hence into mill thorax, the transmission of lead-over groove 1 is eaten When product raw material is had any problem, raw-food material utilize conveyer belt, motor conveyer belt, conveyer belt drive raw-food material from feed opening 1 to Feed opening 2 enters mill thorax；

It is stone or other stone imitation materials or concrete that iron-stone mill, which refers to matrix, and grinding is cast iron or cast steel structure, and grinding passes through The location hole of locating shaft and matrix coordinates, and body portion other structures are identical with stone mill corresponding portion structure, and grinding is fanned by N blocks District's groups are at there are two types of sectors, and one is integral types, and one is assembly types, and grinding is by plane area, flat tooth area, taper district's groups at mill Outermost piece is plane area, and the plane area refers to the region that 10mm is arrived in grinding outside 5, this region of upper lower millstone does not have Roll flute, the flat tooth area refer to the region between plane area and taper area, and the roll flute in this region is parallel, is not bored Degree, the taper area refers to the medial area of roll flute, and the crown of roll flute has the difference in height between 1mm to 5mm from outside to inside, also It is low among roll flute crown, surrounding is high, and the crown of roll flute has height, but it refers to mill that tooth socket, which does not have difference in height, the crown, Piece is close to the part of mill thorax, and tooth socket refers to the low-lying trough-shaped portion of grinding, and the mill thorax refers to that upper lower millstone grinds food The tooth socket of working portion, stone mill is isosceles trapezoid or isosceles triangle, and the tooth socket of metal grinding is domatic, and the domatic refers to From crown to tooth socket, it is divided into slope surface and facade, facade refers to that angle is 90 or is more than 90 degree, and slope surface refers to angle less than 90 degree, When raw-food material is moved to facade, facade hinders raw-food material movement, when raw-food material is moved to slope surface, raw-food material quilt It takes out of, the rotation direction of upper millstone and the grinding slope surface trend of lower millstone are consistent；

The lower millstone is divided to two kinds, and one is stone mills, and one is iron-stone mill, stone is to dig stone processed, lower mill by chisel Disk is coordinated by the lower millstone fixing axle on mounting hole and mill frame, the central shaft cooperation of the centre bore and lower millstone of upper millstone, under The grinding of mill and the roll flute of the grinding of upper millstone or upper lower millstone coordinate levigate food；

The feed hopper is made of pars infundibularis, material spilling hole and lower portion, and pars infundibularis is used for containing raw-food material, lower portion Coordinate with the feed opening 1 of upper millstone, material spilling hole is a part for lower portion, and upper millstone rotates and feed hopper does not turn, and works as charging When the opening and material spilling hole in hole 1 have coincidence, raw-food material escapes to lead-over groove 1 or enters conveyer belt, when opening for feed opening 1 Mouthful and material spilling hole without overlap when, raw-food material cannot leak out, material spilling hole by controllable register control material leakage number；

The discharge bucket is that raw-food material passes through after milling or defibrination, and the collection device of milling or defibrination, discharge bucket connects it His food vessel；

The transmission device is the device that the rotation of motor is passed to upper millstone, and transfer device includes that main driven gear passes Dynamic, pulley drive, chain roller or other transmission devices, the driving gear refer to the gear on motor main shaft, institute The driven gear stated refers to the gear on upper millstone, and one of which transmission device is specifically selected when setting；

The motor is to provide rotary power for upper millstone or provide power for conveyer belt；

The protective cover refers to the protective cover of transmission device.

Description of the drawings

Attached drawing 1 is gravity mill structural schematic diagram, and 1 is discharge bucket, and 2 be mill frame, and 3 be baffle, and 4 be upper millstone, and 5 be lower mill Disk, 6 be bridge column, and 7 be driven gear, and 8 be baffle 1,9 be motor, and 10 be driving gear, and 11 be hanging ring, and 12 be feed hopper, 4- 1 is location hole；

Attached drawing 2 is upper millstone top schematic diagram, and 4 be upper millstone, and 4-1 is location hole, and 4-2 is that feed opening Isosorbide-5-Nitrae -3 is lead-over groove 1, 4-4 is feed opening 2；

Attached drawing 3 is upper millstone bottom schematic view, and 4 be upper millstone, and 4-1 is location hole, and 4-4 is feed opening 2, and 4-5 is lead-over groove 2, 4-6 is centre bore；

Attached drawing 4 is feed hopper schematic diagram, and 12 be feed hopper, and 12-1 is material spilling hole, and 12-2 is pars infundibularis, and 12-3 is under funnel Portion；

Attached drawing 5 is metal grinding principle schematic, and 13 be metal grinding, and 13-1 is sector, and 13-2 is plane area, during 13-3 is Mandrel；

Attached drawing 6 is sector enlarged diagram, and 13-1 is sector, and 13-1A is crown, and 13-1B is tooth socket；

Attached drawing 7 is mill frame principle schematic, and 1 is discharge bucket, and 2 be mill frame, and 2-1 is column, and 2-2 is spreader, and 6 be bridge column, and 6-1 is Lower millstone fixing axle, 8 be baffle 1, and 9-1 is motor main shaft hole, and 9-2 is mounting hole；

Attached drawing 8 is with tapered upper lower millstone schematic diagram, and 4 be upper millstone, and 4-6 is centre bore, and 5 be lower millstone, and 13-2 is flat Face area, 13-3 are central shafts, and 14 be flat tooth area, and 15 be the areas Zhui Chi；

Attached drawing 9 is the lower millstone principle schematic of iron-stone mill, and 5-1 is stone matrix, and 5-2 is ground for metal, and 5-1A is location hole, 13-1 is sector, and axis centered on 13-3,13-4 is locating shaft；

Attached drawing 10 is metal grinding milling principle schematic, and A is slope surface, and B is facade, and C is the grinding of upper millstone, and D is lower millstone Grinding, E is food material, and F is the direction of rotation of upper millstone.

Specific implementation mode

In terms of flour mill operation principle, stone mill is exactly gravity mill, and mechanism mill is pressure mill, and the gravity mill refers to grinding Or the source of roll flute frictional force is mainly converted by the gravity of upper millstone and is obtained, and pressure mill refers to grinding or roll flute frictional force To be gravity can keep relative constant to the advantages of source is mainly converted by pressure and obtained, and gravity is ground, frictional force size when operational plate Stablize, be easy to control grinding temperature, this point is that pressure mill is difficult to realize, and pressure mill is ground pressure size by manual adjustment When, it can only rule of thumb, the operation principle and construction of gravity mill is described with reference to the drawings in applicant,

Operation principle：The raw-food material ground is needed to be put into feed hopper 12, under the drive of motor 9, driving gear 10 drives Driven gear 7 operates, and driven gear 7 drives upper millstone 4 to operate, in lower portion 12-3 mergings 4-2, when the outlet and leakage of 4-2 When material hole 12-1 has coincidence, raw-food material leaks out, through 4-3 to 4-4, into mill thorax, when the outlet of 4-2 and material spilling hole 12-1 do not have When coincidence, raw-food material cannot leak out, in this way, raw-food material can be leaked out periodically, the size setting of material spilling hole is adjustable, this The action of sample, feeding and hand fed is very close to needing plus water conservancy project is when making, using water pipe, control the size of flow, food is former Material is ramped shaped by 4-4 to 4-5,4-5, when ramped shaped facilitates upper millstone to operate, raw-food material is driven to enter mill thorax, described It refers to the opposite part in upper lower millstone sector to grind thorax,

When needing cleaning mill thorax, hanging ring 11, suspension hook pull-up upper millstone are hung using suspension hook, so that it may which, with cleaning, upper millstone does not weigh , it has removed upper millstone using manpower and has cleaned.

Traditional stone mill feed inlet is not arranged in center, and the action of the handle and charging turned a millstone needs to coordinate, and so one A action has the suspicion wasted one's talent on a petty job using robot completion, and feed hopper feed inlet is arranged in stone mill center, center is passed through Position is transmitted to 4-4 part of stone mill, if excessively flat, food transport is unsmooth, and raw-food material is caused to be difficult to deliver to 4-4, Conveyer belt is driven to transport using micromotor, motor uses storage battery power supply.

When general farmers' stone mill uses less, Red Sandstone is directly utilized to make upper lower millstone, still, if it is processing capacity When bigger, stone mill has the shortcomings that apparent, and the mill material of stone mill is usually Red Sandstone, and the material of this stone is very coarse, rubs Wiping power is big, and hardness is moderate, is easy to fine ground food, and but, roll flute loss is fast, needs regular chisel tooth, after new chisel roll flute, very Hardly possible cleaning, the first food ground twice is substantially only scrapped, because there is microlith powder, moreover, as time goes by, mill Weight is more and more lighter, and the food fineness ground is difficult to reach food sanitation standard, and mechanism mill is using casting grinding, and hardness is high, machine System mill rotating speed is high, is ground its center line velocity and outside linear velocity differs greatly, and outer wear is fast, and Innerside wear is slow, and the time is used Long, inside is high, and outside is low, equally has an impact to fineness, and in order to reduce the different influences to fineness of linear velocity, mechanism is ground all There is regulating device, by the fineness for the elastic adjustment food that manual setting is ground, the result of this adjustment is exactly the part being ground Wen Sheng is got higher, because contact surface is bigger, food is bigger by fine ground contact surface, and Wen Sheng is just without so severe, grinding out-of-flatness Later, food only contacts in sub-fraction grinding, needs levigate, it is necessary to which the pressure of the pressure of bigger, bigger can make this Partial size sheets temperature increases, to cause the destruction of bigger to food nutrition.

In order to solve this problem, the grinding of gravity mill uses taper grinding and iron-stone mixed structure, and taper is ground by putting down Face area, flat tooth area, taper district's groups are at outermost is plane area, and the plane area refers to the area that 10mm is arrived in grinding outside 5 Domain, this region of upper lower millstone do not have roll flute, plane area to see that attached drawing 8 indicates 13-2, and the flat tooth area refers to plane area and cone The region between area is spent, the roll flute in this region is parallel, and without taper, the mark of attached drawing 8 14, the taper are seen by flat tooth area Area refers to the medial area of roll flute, and the crown of roll flute has from outside to inside in the difference in height between 1mm to 5mm, that is, roll flute crown Between it is low, surrounding is high, and the mark of attached drawing 8 15 is seen in taper area, and but, the crown of roll flute has height, but tooth socket does not have difference in height, this Sample can utilize material, crown and tooth socket to see the mark 13-1A and mark 13-1B of attached drawing 6 respectively to greatest extent,

The iron-stone mixed structure refers to that grinding is manufactured using cast iron or cast steel, and the basis material of upper lower millstone is stone, more Grinding is only needed replacing when changing, in this way, ensureing that frictional force is substantially consistent when work, the lower millstone structure of iron-stone mixed structure is former Reason schematic diagram is shown in attached drawing 9, and when upper millstone uses iron-stone structure, principle is identical with lower millstone, and grinding uses cast iron or cast steel Manufacture, basis material are stone, and location hole and locating shaft are utilized between basis material and grinding, prevent basis material and grinding from sending out Raw friction.

Speed governing, mechanism mill speed are too fast, and stone mill speed is too low, and speed is too low, it is ensured that the quality of converted products and thin Degree, but efficiency is very low, and also the loss of stone mill roll flute is very big, and but, manpower and animal power itself do not provide speed how soon yet, Stone mill is difficult to adapt to industrialized needs, although and mechanism mill is high in machining efficiency, food nutrition loss is big, and mouthfeel is also too late Stone mill, therefore, for the speed control of gravity mill between 100 revs/min to 200 revs/min, there are mainly two types of schemes for speed governing, become The speed governing of frequency device and gear speed governing, the former speed governing is very convenient, the disadvantage is that of high cost, the latter is single speed, with 4 extremely single-phase 750w electricity For motivation, it is 240 teeth that driving gear 10, which has 24 teeth, driven gear 7, then, the rated speed of upper millstone is 1400*24/240 =140 revs/min, this scheme is the disadvantage is that only a kind of rotating speed, advantage are low costs, and specifically foundation actual needs is adopted when manufacture With, and be easy to involve in the clothes of operator when the use of belt pulley, sprocket wheel, clothes is involved in order to prevent, and transmission device needs to be arranged Protective cover.

Claims (1)

1. a kind of gravity mill, it is characterized in that：

Gravity mill is mainly made of mill frame, upper millstone, lower millstone, feed hopper, discharge bucket, transmission device, motor, protective cover,

The mill frame is the holder of gravity mill, other parts are all disposed on mill frame；

The upper millstone is divided to two kinds, and one is stone mills, and one is iron-stone mill, stone mill is to dig stone processed by chisel, on Mill is connected by location hole with driven gear, and motor drives driving gear, driving gear to drive driven gear, driven gear Upper millstone rotation is driven, raw-food material is from feed opening 1 along excessive slot 1 to feed opening 2, and hence into mill thorax, the transmission of lead-over groove 1 is eaten When product raw material is had any problem, raw-food material utilize conveyer belt, motor conveyer belt, conveyer belt drive raw-food material from feed opening 1 to Feed opening 2 enters mill thorax；

It is stone or other stone imitation materials or concrete that iron-stone mill, which refers to matrix, and grinding is cast iron or cast steel structure, and grinding passes through The location hole of locating shaft and matrix coordinates, and body portion other structures are identical with stone mill corresponding portion structure, and grinding is fanned by N blocks District's groups are at there are two types of sectors, and one is integral types, and one is assembly types, and grinding is by plane area, flat tooth area, taper district's groups at mill Outermost piece is plane area, and the plane area refers to the region that 10mm is arrived in grinding outside 5, this region of upper lower millstone does not have Roll flute, the flat tooth area refer to the region between plane area and taper area, and the roll flute in this region is parallel, is not bored Degree, the taper area refers to the medial area of roll flute, and the crown of roll flute has the difference in height between 1mm to 5mm from outside to inside, also It is low among roll flute crown, surrounding is high, and the crown of roll flute has height, but it refers to mill that tooth socket, which does not have difference in height, the crown, Piece is close to the part of mill thorax, and tooth socket refers to the low-lying trough-shaped portion of grinding, and the mill thorax refers to that upper lower millstone grinds food The tooth socket of working portion, stone mill is isosceles trapezoid or isosceles triangle, and the tooth socket of metal grinding is domatic, and the domatic refers to From crown to tooth socket, it is divided into slope surface and facade, facade refers to that angle is 90 or is more than 90 degree, and slope surface refers to angle less than 90 degree, When raw-food material is moved to facade, facade hinders raw-food material movement, when raw-food material is moved to slope surface, raw-food material quilt It takes out of, the rotation direction of upper millstone and the grinding slope surface trend of lower millstone are consistent；

The lower millstone is divided to two kinds, and one is stone mills, and one is iron-stone mill, stone is to dig stone processed, lower mill by chisel Disk is coordinated by the lower millstone fixing axle on mounting hole and mill frame, the central shaft cooperation of the centre bore and lower millstone of upper millstone, under The grinding of mill and the roll flute of the grinding of upper millstone or upper lower millstone coordinate levigate food；

The feed hopper is made of pars infundibularis, material spilling hole and lower portion, and pars infundibularis is used for containing raw-food material, lower portion Coordinate with the feed opening 1 of upper millstone, material spilling hole is a part for lower portion, and upper millstone rotates and feed hopper does not turn, and works as charging When the opening and material spilling hole in hole 1 have coincidence, raw-food material escapes to lead-over groove 1 or enters conveyer belt, when opening for feed opening 1 Mouthful and material spilling hole without overlap when, raw-food material cannot leak out, material spilling hole by controllable register control material leakage number；

The discharge bucket is that raw-food material passes through after milling or defibrination, and the collection device of milling or defibrination, discharge bucket connects it His food vessel；

The transmission device is the device that the rotation of motor is passed to upper millstone, and transfer device includes that main driven gear passes Dynamic, pulley drive, chain roller or other transmission devices, the driving gear refer to the gear on motor main shaft, institute The driven gear stated refers to the gear on upper millstone, and one of which transmission device is specifically selected when setting；

The motor is to provide rotary power for upper millstone or provide power for conveyer belt；

The protective cover refers to the protective cover of transmission device.