JP2019089017A - Grain cleaning device - Google Patents

Abstract

To provide a grain cleaning device that does not rely on the experience and intuition of an operator in adjusting energization force for an elastic body of a discharge valve, and that is capable of uniformizing the quality of finish even in the case of being unable to cope with only by adjusting the energization force for the elastic body of the discharge valve.SOLUTION: A grain cleaning device 1 comprises a grain cleaning unit 20, a grain supply device 10 that supplies grains to the grain cleaning unit 20, and a discharge valve 30 for applying resistance force to cleaned grains cleaned and discharged by the grin cleaning unit 20, and separately cleans grains of selected grain thicknesses. The grain supply device 10 supplies grains to the grain cleaning unit 20 in a different manner for grains of each of the selected grain thicknesses.SELECTED DRAWING: Figure 3

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a grain milling apparatus including a rice milling machine that mills separately raw rice grains, which are raw materials, into large grain thickness and small grain thickness, and then separately grinds the rice.

  As a milling device for milling separately after separating brown rice grains into large grain thickness and small grain thickness, there is one like Patent Document 1. Such a grain milling apparatus mills large grain thickness and small grain thickness separately, so that the variation in grain size due to grain thickness is reduced compared to the case where grain rice of large and small grain thickness is mixed and milled And can reduce excessive grain milling.

  The cereal grain load can be adjusted by adjusting the biasing force of the elastic body of the discharge valve. The grain load is set according to the size of the grain thickness, and is set large for grains with large grain thickness and small for grains with small grain thickness. Since the grain size can be adjusted and adjusted in this way, large grain size and small grain thickness can be finished equally.

Patent No. 4552284

Like the grain milling apparatus described in Patent Document 1, in order to adjust the biasing force of the elastic body of the discharge valve according to the size of the grain thickness, the operator often relied on experience and intuition. In addition, when the difference in grain thickness is large or the like, it may not be possible to cope with the uniformity of the degree of finishing only by adjusting the biasing force of the elastic body.
Therefore, in order to finish the large grain thickness and the small grain thickness equally, a method other than adjusting the biasing force of the elastic body of the discharge valve was also required.

  Therefore, in view of the above problems, the object of the present invention is not to rely on the operator's experience or intuition in adjusting the biasing force of the elastic body of the discharge valve, and also when the difference in grain thickness is large. It is an object of the present invention to provide a grain milling apparatus in which the degree of finishing can be made uniform even if it can not be dealt with only by adjusting the biasing force of the elastic body.

  The invention according to claim 1 of the present application is characterized in that the cereal grain part, the grain feeding means for feeding grains to the cereal grain part, and the cereal grains which are milled and discharged in the cereal grain part have resistance. A cereal grain device provided with a discharge valve, and grained separately for grain of grain thickness, wherein the grain feeding means is different for each grain grain of the grain thickness selected. It is a cereal grain apparatus characterized by supplying a grain to the said cereal grain part by a method.

  In the invention according to claim 2 of the present application, the grain supplying means is configured to make at least one of a steam supply amount, a steam temperature and a steam humidity different for each grain of the sorted grain thickness, The cereal grain apparatus according to claim 1, wherein the grain is supplied to the part.

  In the invention according to claim 3 of the present application, the grain supplying means supplies grains to the refined grain part at different positions to be supplied to the refined grain part for each grain of the grain thickness sorted. It is the cereals apparatus of Claim 1 or Claim 2 characterized by the above-mentioned.

  The configuration according to claims 1 to 3 makes it possible to adjust the biasing force of the elastic body of the discharge valve without relying on the operator's experience or intuition, and also when the difference in grain thickness is large. Even if the adjustment can not be done by adjusting the biasing force, the degree of finishing can be made uniform.

It is the flowchart which applied the grain milling apparatus of this invention to 1st Embodiment to a rice polishing installation. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the cereals apparatus of this invention in 1st Embodiment. It is sectional drawing of the cereals apparatus of this invention in 2nd Embodiment. It is sectional drawing of the cereals apparatus of this invention in 3rd Embodiment. It is sectional drawing of the cereals apparatus of this invention in 4th Embodiment. It is sectional drawing of the cereals apparatus of this invention in 5th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Needless to say, the present invention is not limited to the embodiment.

First Embodiment
Hereinafter, a first embodiment according to the present invention will be described with reference to FIGS. 1 and 2 of the drawings.
In the first embodiment, the grain milling apparatus of the present invention is applied to a rice milling facility.
FIG. 1 shows a flow diagram of a rice milling installation to which the grain milling apparatus 1 of the present invention is applied.
Milling equipment includes grain milling equipment 1, temporary storage hopper 2, sorting device 3, large grain thickness storage hopper 4, small grain thickness storage hopper 5, rice receiving tank 6, finished grain receiver 7, finished large grain thick grain tank 8, finished small grain A thick grain tank 9 is provided.

Raw material brown rice is stored in the temporary storage hopper 2. The sorting device 3 sorts the raw material brown rice from the temporary storage hopper 2 into large grain thick brown rice and small grain thick brown rice.
The sorting device 3 includes a sorting cylinder having a slit, and sorts the raw material brown rice into a brown rice larger than a predetermined grain thickness and a brown rice smaller than a predetermined grain thickness. In the present embodiment, the sorting device 3 is provided with a sorting cylinder having a slit, but is not limited to this.
The large grain thickness storage hopper 4 stores large grain thickness brown rice sorted from the sorting device 3, and the small grain thickness storage hopper 5 stores small grain thickness brown rice sorted from the sorting device 3.

The grain milling apparatus 1 includes a grain feeder 10, a grain milling unit 20, and a discharge valve 30. The grain feeding device 10 corresponds to the grain feeding means of the present invention.
The grain feeding device 10 feeds large grain thickness brown rice and small grain thickness brown rice separately sent from the large grain thickness storage hopper 4 and the small grain thickness storage hopper 5 to the refined grain part 20. The grain milling section 20 mills the brown rice sent from the grain feeding device 10. The discharge valve 30 is provided at a place where the milled rice milled by the milled portion 20 is discharged, and applies a load of milled grain.

The rice receiving vessel 6 receives the rice cake discharged from the grain milling apparatus 1. The finished grain receiver 7 receives and stores the milled rice discharged from the grain milling apparatus 1.
The finished large-grain thick grain tank 8 is for storing large-thickness thick milled rice from the finished grain receiver 7. The finished small-grain-thick grain tank 9 stores small-grain-thick milled rice from the finished grain receiver 7.
A switching device (not shown) is provided between the finished grain receiver 7, the finished large grain thick grain tank 8 and the finished small grain thick grain tank 9, and the milled grain of large grain thickness on the finished grain receiving 7 by the switching device. When small amounts of milled rice are stored in the finished large grain thick grain tank 8 when small grains are stored, the small finished thick grain grain tank 9 can be stored.

FIG. 2 shows a grain milling apparatus 1 including a grain feeding device 10, a grain milling portion 20, and a discharge valve 30.
The grain feeder 10 includes a receiving pipe 11, an outer cylinder 12, and an inner cylinder 13.
The receiving pipe 11 is vertically provided from the opening 12 a provided at the left end of the outer cylinder 12 as viewed in the drawing. The receiving pipe 11 receives large grain thick brown rice or small grain thick brown rice from the large grain thick storage hopper 4 or the small grain thick storage hopper 5 and sends it into the outer cylinder 12. There is a facility (not shown) between the large grain thickness storage hopper 4 and the small grain thickness storage hopper 5 and the receiving pipe 11, whereby brown rice from either large grain thickness brown rice or small grain thickness brown rice is supplied to the reception pipe 11.
The outer cylinder 12 is a tubular body horizontally provided in the left-right direction in the drawing, and includes the inner cylinder 13 inside. An opening 12 b is provided at a lower portion of the opening 12 a where the receiving pipe 11 of the outer cylinder 12 is provided at a predetermined distance in the right direction in the drawing. The supply pipe 16 is provided from the opening 12 b.

  The inner cylinder 13 is rotatably supported by the bearing 14 in the outer cylinder 12. The inner cylinder 13 is provided with a spiral 13a on the outer periphery. The spiral rib 13a is provided from the left end in the drawing to the vicinity of the opening 12b provided in the right direction in the drawing of the outer cylinder 12. The inner cylinder 13 has a hollow portion 13 b and a plurality of steam discharge holes 13 c communicating with the hollow portion 13 b. In FIG. 2, the left half of the inner cylinder 13 is a sectional view, and the right half is a side view. A drive pulley 15 is fixed to the right end of the inner cylinder 13 in the drawing, and is rotated by a drive source (not shown). The brown rice in the outer cylinder 12 moves from the left side to the right side of the drawing by rotation of the inner cylinder 13 provided with the spiral streaks 13 a and is supplied to the milled part 20 through the opening 12 b and the supply pipe 16. The left end in the drawing of the inner cylinder 13 is open and in communication with the hollow portion 13 b.

The grain feeder 10 comprises a steam feeder 17.
The steam supply device 17 includes a steam generator 17a and a steam supply pipe 17b. The steam generator 17a generates steam of a predetermined temperature and humidity, and can discharge a predetermined amount. The predetermined temperature, humidity and discharge rate can be varied. One end of the steam supply pipe 17 b is connected to the steam generator 17 a, and the other end is connected to the opening of the inner cylinder 13 at the left end in the drawing. The connection portion of the steam supply pipe 17b and the inner cylinder 13 is provided with a seal 18 so that the inner cylinder 13 can rotate with respect to the steam supply pipe 17b and the steam does not leak. The steam generated by the steam generator 17 a is supplied to the hollow portion 13 b of the inner cylinder 13 through the steam supply pipe 17 b and discharged into the outer cylinder 12 from the steam discharge hole 13 c.

The grain milling section 20 includes a casing 21 and a main shaft 22.
The casing 21 is a tubular body horizontally provided in the left-right direction in the drawing, and has a main shaft 22 inside. At the top, an opening 21a is provided, and a feed pipe 16 of the grain feeder 10 is provided. A porous wall removing and whitening cylinder 23 is provided at an end of the casing 21 in the left direction of the drawing, and a whitening cylinder cover 24 covering the porous wall removing and whitening cylinder 23 is provided. The porous wall removing and whitening cylinder 23 is a cylindrical body having a plurality of holes 23a, the left end in the drawing is open, and a discharge valve 30 described later is provided. Below the opening at the left end of the paper surface of the porous wall removing and whitening cylinder 23 in the drawing surface, a fine item discharging crucible 25 is provided. Below the porous wall removing and whitening cylinder 23, a weir discharging weir 26 is provided.

The main shaft 22 is rotatably supported by a bearing 27 in the casing 21. The main shaft 22 is provided with a feeding screw 22a on the outer periphery. The feeding screw 22 a is provided from the vicinity of the opening 21 a of the casing 21 to the end of the casing 21 and the vicinity of the boundary with the porous wall removing and whitening cylinder 23. On the left side of the paper feed screw 22a of the main shaft 22 in the drawing, a pair of axially extending projecting portions 22b are provided. A reverse screw 22c having a larger pitch than the feeding screw 22a is provided on the left side of the protrusion 22b of the main shaft 22 in the drawing. The main spindle forms the brown rice feed roll portion at the portion where the feeding screw 22a is provided, the whitening roll portion at the portion where the protruding portion 22b is provided, and the brown rice returning whitening portion at the portion where the reverse screw 22c is provided. .
A drive pulley 28 is fixed to the right end of the drawing of the main shaft 22 in the drawing, and is rotated by a drive source (not shown). By rotating the main shaft 22, the brown rice supplied from the opening 21a into the casing 21 is milled while moving from the right side to the left side of the drawing, the milled rice is discharged from the fines discharge gutter 25, and the gutter is discharged from the gutter discharge gutter 26 Be done.

  The discharge valve 30 has a valve main body 31 provided to close the opening on the left end of the surface of the porous wall removing white cylinder 23 as viewed in the drawing, and a spring body 32 and a spring body 32 for applying an elastic force to the valve main body 31. And a handle device 33 for adjusting the elastic force. With this configuration, it is possible to adjust the resistance of the valve main body 31 by operating the handle device 33 and to apply the resistance to the discharged cereal grains to adjust the degree of the cereal grains.

The operation of the grain milling apparatus 1 will be described.
The large grain thick brown rice fed from the large grain thick storage hopper 4 or the small grain thick brown rice fed from the small grain thickness storage hopper 5 is supplied to the grain milling part 20 while being given steam in the grain feeding device 10. The applied steam is applied to the large grain thick brown rice at a high steam supply rate and high temperature and high humidity, and the small grain thickness brown rice is applied at a low steam supply rate and low temperature and high humidity. This is because the large grain thick brown rice has a larger load of fine grains than the small grain thick brown rice. Practically, the weight of water is in the range of about 3 g (gram) to 5 g (gram) to 1 kg of brown rice, the temperature of the applied steam is in the range of about 50 to 99 ° C., and the humidity of the steam is 80 to It is given in the range of about 99%. As an example of applying steam, in the case of large grain thickness brown rice and small grain thickness brown rice sorted by the screening device 3 with a screen opening of 2.05 mm, the steam supply amount 5 g (gram) for the large grain thickness brown rice, steam temperature 70 ° C., steam The humidity is 90%, and for small grain thick brown rice, the steam supply amount is 3 g (gram), the steam temperature is 60 ° C., and the steam humidity is 80%. In the present embodiment, although the temperature, humidity, and supply amount of steam are different between the large grain thickness brown rice and the small grain thickness brown rice, any one of them may be set to a different value and may be given. Thereby, it is possible to soften the surface layer portion of the rice grain according to the grain thickness of the large grain thick brown rice and the small grain thick brown rice.
And since the lipase which is a hydrolytic enzyme contained in rice grain deactivates when the steam treatment as described above is carried out, the oxidation of rice grain does not proceed easily even if the cocoon layer is removed in the refined grain part of the next step. Can produce white rice. As a result, it is expected that the deterioration of the taste of polished rice can be suppressed even if the number of days after milling has passed.

  Since the brown rice supplied from the grain feeder 10 to the milled part 20 is provided with steam according to the large grain thick brown rice and the small grain thick brown rice, it is possible to reduce the adjustment of the load in the grained part 20 it can. For this reason, the operator does not rely on the operator's experience or intuition to adjust the biasing force of the elastic body of the discharge valve, and only by adjusting the biasing force of the elastic body of the discharge valve, for example, when the difference in grain thickness is large. Even if it can not cope with it, the degree of finishing can be made uniform.

Second Embodiment
Hereinafter, a second embodiment according to the present invention will be described with reference to FIG. 3 of the drawings. The description of the same parts as those of the first embodiment will be omitted, and mainly different parts will be described.
In the first embodiment, the grain feeding device 10 applies different supply amounts, temperatures and humidity vapors according to the large grain thick brown rice and the small grain thick brown rice, and supplies them to the milled part 20, In the present embodiment, the grain feeding device 100 is configured such that the position to be supplied to the milled grain portion 20 differs between the large grain thick brown rice and the small grain thick brown rice.

  As shown in FIG. 3, in the present embodiment, as the grain feeding device 100, the openings 21 a are provided at two places in the left-right direction of the paper surface of the casing 21 of the milled part 20, and the feed pipes 101 and 102 are provided in the openings 21 a. Is provided. The supply pipe 101 is provided at a position away from the porous wall removing and whitening cylinder 23, and the supply pipe 102 is provided at a position near the porous wall removing and whitening cylinder 23. Then, large grain thickness brown rice from the large grain thickness storage hopper 4 is supplied to the supply pipe 101, and small grain thickness brown rice from the small grain thickness storage hopper 5 is supplied to the supply pipe 102. This is because the large grain thick brown rice has a larger load of grain than the small grain thick brown rice, and even with the brown rice feed roll portion of the portion provided with the feeding screw 22a, the slight grain action by the friction with the casing 21 Since the effect of this grain milling is increased as it is located in the brown rice feed roll portion, the feed pipe 101 for feeding large grain thick brown rice to a position away from the porous wall removing and whitening cylinder 23 which will be positioned longer It is provided. On the other hand, the supply pipe 102 for supplying small-grain thick brown rice which does not require as much grain thickening as large-grain thick brown rice is provided at a position close to the porous wall removing and whitening cylinder 23.

The brown rice supplied from the grain feeder 100 to the milled part 20 has a different feed position to the milled part 20 depending on the large grain thick brown rice and the small grain thick brown rice, so the load adjustment in the grain mill part 20 It can be reduced. For this reason, the operator does not rely on the operator's experience or intuition to adjust the biasing force of the elastic body of the discharge valve, and only by adjusting the biasing force of the elastic body of the discharge valve, for example, when the difference in grain thickness is large. Even if it can not cope with it, the degree of finishing can be made uniform.
When feeding large grain thick brown rice from the feed pipe 101, the feeding portion of the feed screw 22a in the casing 21 does not receive so much pressure, so a lid or the like is provided at the opening 21a where the feed pipe 102 is provided. It is not open and is open. If the large grain thickness brown rice overflows from the opening 21a where the feed pipe 102 is provided by applying pressure to the feed portion, the cover is appropriately provided.

Third Embodiment
Hereinafter, a third embodiment according to the present invention will be described with reference to FIG. 4 of the drawings. The description of the same parts as those of the first and second embodiments will be omitted, and mainly different parts will be described.
In the third embodiment, a porous wall removing and whitening cylinder 23 is used up to the casing 21 of the brown rice feed roll portion in the portion where the feeding screw 22a is provided in the second embodiment. As described above, since there is a certain degree of grain refining action by the feeding screw 22a as described above, the porous wall removing and whitening cylinder 23 is disposed also in this part to separate it from the straw.
In the third embodiment, since the porous wall removing and whitening cylinder 23 is provided up to the brown rice feeding roll portion, the whitening cylinder cover 24 is similarly extended. And the opening part 23b is provided in the part in which the supply pipe | tube 111 which supplies the large grain thickness brown rice in the porous wall removing and whitening cylinder 23, and the supply pipe 112 which supplies small grain thickness brown rice are provided. Further, an opening 24 a is provided in a portion where the large diameter thick brown rice supply pipe 111 and the small diameter thick brown rice supply pipe 112 are provided in the whitening cylinder cover 24.

Fourth Embodiment
Hereinafter, a fourth embodiment according to the present invention will be described with reference to FIG. 5 of the drawings. The description of the same parts as in the first to third embodiments will be omitted, and mainly different parts will be described.
In the fourth embodiment, in the third embodiment, the feed tubes 101 and 102 are provided as feed tubes 121 and 122 that are movable in the left-right direction (X direction in FIG. 5) as the grain feeding device 120. is there.
The supply pipe 121 for supplying large grain thickness brown rice and the opening part 23b provided with the supply pipe 122 for supplying small grain thickness brown rice in the porous wall removing and whitening cylinder 23 are provided as long holes elongated in the left-right direction in the drawing There is. Further, the supply pipe 121 for supplying large grain thickness brown rice in the whitening cylinder cover 24 and the opening 24a provided with the supply pipe 122 for supplying small grain thickness brown rice are provided as long holes elongated in the left-right direction in the drawing.
The supply pipes 121 and 122 are fixed to moving means 123 and 124 such as carriages movable on the white cylinder cover 24 in the left-right direction in the drawing.
In the present embodiment, since the supply pipes 121 and 122 are configured to be movable, it is possible to adjust the supply position to the milled part 20.

In addition, about the opening part 23b and 24a made into the long hole, since the sending part of the grain feeding screw 22a does not receive that much pressure, the lid etc. are not provided in the part in which the supply pipe 121,122 is not provided, but it opens. It is done. If brown rice overflows from the long hole of the portion where the feed pipes 121 and 122 are not provided due to pressure being applied to the feed portion, the lid is appropriately covered.
Further, in the present embodiment, a plurality of supply pipes 121 and 122 are provided, but may be one. In this case, the supply pipe is moved to the right side of the drawing to supply large grain thick brown rice to the grain milling portion 20, and the supply pipe is moved to the left side of the drawing to supply small grain thick brown rice to the grain milling part 20.

Fifth Embodiment
Hereinafter, a fifth embodiment according to the present invention will be described with reference to FIG. 6 of the drawings. The description of the same parts as in the first to fourth embodiments will be omitted, and mainly different parts will be described.
This embodiment is a combination of the first embodiment and the second embodiment. Supply branch pipes 16 a and 16 b are provided in the supply pipe 16 of the grain supply device 130 and are connected to the opening 21 a of the casing 21 of the grain processing unit 20. A switching device 16c is provided to supply large diameter thick brown rice to the supply branch 16a and small diameter thick brown rice to the supply branch 16b.

[Other Modifications]
The present invention is not limited to the above embodiment. For example, the following is included.

  In the present embodiment, the case of sorting the brown rice into two types of large grain thickness and small grain thickness is described, but it is also possible to use more types. For example, the present invention may be applied to those sorted into three types to which medium grain thickness is added by providing sorting devices in multiple stages. In this case, depending on the type, the method of supplying steam may be changed to three or the number of supply points may be changed to three.

  In this embodiment, although it applied to the grain milling machine of a rice milling machine, it is not limited to this, You may use for grain millings, such as wheat.

  The technical matters in any of the embodiments may be applied to the other embodiments as examples.

DESCRIPTION OF SYMBOLS 1 Grain milling apparatus 2 Temporary storage hopper 3 Sorting apparatus 4 Large grain thickness storage hopper 5 Small grain thickness storage hopper 6 Sake receiving tank 7 Finished grain receiving 8 Finished large grain thick grain tank 9 Finished small grain thick grain tank 10 Grain feeding apparatus 11 Acceptance Tube 12 Outer cylinder 13 Inner cylinder 14 Bearing 15 Drive pulley 16 Supply tube 17 Steam supply device 18 Seal 20 Fine grained part 21 Casing 22 Main shaft 22 Pore-wall wall removing white tube 24 White tube cover 25 Fine discharge tube 26 Double discharge tube 27 Bearing 28 drive pulley 30 discharge valve 31 valve body 32 spring body 33 handle device 100 grain feeding device 101, 102 feeding pipe 110 grain feeding device 111, 112 feeding pipe 120 grain feeding device 121, 122 feeding pipe 123, 124 moving means 130 grain feeder

Claims (3)

A grain milling section, a grain feeding means for feeding grains to the grain milling section, and a discharge valve for giving resistance to the grains milled and discharged in the grain milling section. A grain milling apparatus for grain-sorting grain of selected grain thickness separately,
The grain feeding apparatus, wherein the grain feeding means feeds grains to the grain milling part in different manners for each grain of the grain thickness selected. The grain feeding means feeds grains to the refined grain part by making at least one of a steam supply amount, a steam temperature and a steam humidity different for each grain of the sorted grain thickness. The cereal grain apparatus of Claim 1 characterized by the above-mentioned. The grain feeding means feeds grains to the refined grain part by changing the position to be fed to the refined grain part for each grain of the grain thickness selected. Or the grain milling apparatus of Claim 2.

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