JPS63117B2 - - Google Patents

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention is a method for sorting grains such as rice and wheat according to their grain size, and packing only large grains into bags. This invention relates to a vertical grain sorter that is convenient for packaging.

``Prior art and its problems'' Conventionally, in order to sort rice grains into regular grains and grains other than grains (hereinafter referred to as miscellaneous grains) and pack the grains into bags for commercial use, etc. This was done using a device as shown in Figure 4. That is, in FIG.
is a horizontal sorter, B is a granulator, and C is a weighing platform. The rice to be sorted is first supplied from the supply port A ₁ of the horizontal sorter A into the sorting net A ₂ which is connected to _the motor A ₄ and rotates. As step ₂ rotates, it gradually moves toward outlet A ₃ . The sorting net _A2 has a cylindrical or polygonal tube shape, and its circumferential surface is engraved with countless meshes through which the miscellaneous particles can pass. Sorting machine A from ₅
is discharged to the outside. On the other hand, the sorted rice reaches the end of the sorter A and is transferred from the take-out port A ₃ to the supply port B ₁ of the granulator B, and the rice transferred to the granulator B is transferred to the conveyor B ₂ . It is then lifted upward and taken out from the outlet _B3 . A weighing platform C is placed below the take-out port _B3 , and a bag _C1 is placed on it, so that the taken out rice is stuffed into the bag _C1 .

As can be seen from the above, in order to sort and bag rice according to the conventional method, sorting machine A is required.
and a granulator B, and is not suitable for installation in a narrow workplace. Furthermore, when horizontal sorter A was examined separately, it was found that its efficiency was extremely poor. The sorting net, which is the central part of the horizontal sorting machine, is cylindrical and has a polygonal cross section as shown in FIG. 5, for example. When sorting rice grains, the sorting net A ₂ is rotated in the direction of the arrow, and the rice fed therein is stirred, but most of the rice is separated by the rotating centrifugal force of the sorting net A ₂ and the gravity acting on the rice grains. A lumpy sedimentary layer a is generated in the area where the grains are balanced, and the rice grains located in the inner part where the circumferential speed is slow collapse into a thin layer along the surface of the sedimentary layer a.
In this case, the rice grains forming the sedimentary layer a are hardly subjected to the sieving action, and only those that have fallen down are subjected to the sieving action. As a result, effective sorting is performed only in area b located at the bottom of sorting network _A2 ,
Since the portion corresponding to effective area b is only about 1/8 of the total circumferential area of the sorting net _A2 , its actual sorting efficiency remained at a level slightly over 10%. is the current situation.

``Object of the Invention'' The present invention has been made in view of the above-mentioned circumstances. To provide a vertical grain sorting machine which can take out grains without damaging them and has extremely high sorting efficiency.

"Structure of the Invention" (Means for Solving the Problems) The gist of the vertical grain sorter according to the present invention is that the vertical grain sorter is arranged from the lower part to the upper part by a lower partition body and an upper partition body arranged inside. A vertical cylindrical grain body provided with a supply area for supplying grains from the outside in order, a sieve area for sieving out miscellaneous grains, and a take-out area for taking out grains, and a vertical cylindrical grain body housed within the grain body and facing the supply area. A vertical grain comprising a sorting cylinder having a cylindrical shape as a whole and having an introduction part, a sorting part facing the sieving area, and a discharge part facing the removal area, and a fried grain body rotatably housed in the sorting cylinder. In the grain sorter, the upper partition is provided obliquely to the axis of the grain, protrudes from the inner peripheral wall of the grain toward the outer peripheral wall of the sorting cylinder, and is arranged on the lower end side of the upper partition. This is where the outlet for taking out the grains is provided.

(Action brought about by the solution) The vertical grain sorter of the present invention that takes the above-mentioned measures has the following features:
Since the sieving action of the grain material is carried out over a wide area covering almost the entire circumference of the sorting section, which occupies the center of the sorting tube,
Sorting efficiency and sorting efficiency are significantly improved, and there is extremely little risk of damaging grains. Moreover,
The vertical grain sorter of the present invention has both the primary sorting function and the secondary grain frying function, so it is compact as a whole, occupies less space for installation, and occupies less space in the workplace. The extra space can be utilized for other related work.

(Example) The present invention will be described below based on drawings showing examples thereof.

FIG. 1 is a side sectional view of a vertical grain sorter according to the present invention. As can be understood from the figure, the most distinctive feature of the vertical grain sorting machine according to the present invention is that a rotatable grain frying body 30 is erected inside the cylindrical sorting cylinder 20; Further, in a vertical grain sorter in which the sorting tube 20 is housed in the tubular grain 1,
An upper partition 7 that separates a sieving area 6 for sieving out miscellaneous grains inside the grain 1 and a take-out area 8 for taking out the grains is provided in an inclined manner, and the upper partition 7 in the grain 1 An outlet for taking out the sized particles _M3 (in this embodiment, shown as a storage tank 14) is provided on the lower end side, and these are integrated as a whole.

First, to explain grain 1, its inside is as follows.
The lowest part is a base cavity 2, above which a supply area 4 is divided by a bottom plate 3 and a lower partition plate 5, and a supply area 4 is divided by a lower partition plate 5 and an upper partition body 7. It is occupied by a sieving area 6 and a removal area 8 which is covered at the top by a canopy 9. The bottom plate 3 plays a role of supporting the sorting tube 20 and the fried grain body 30, which are the central parts, and the sorting tube 2 is placed in the center of the bottom plate 3.
A gear box 10 is installed to transmit rotational driving force to the grain lifting body 30 and the grain lifting body 30, and a motor 11 is installed at the bottom of the gear box 10. The lower partition body 5 is punched out in the center so as to rotatably fit the sorting tube 20 therein, and has rice grains M ₁ to be sorted protruding outward from the waist portion of the grain body 1 . It is attached to the inner circumferential wall of the grain 1 in an inclined manner by welding or the like, with the side where the supply port 12 is attached at the top. This prevents the miscellaneous grains M ₂ from entering the supply area 4 during sorting and exclusion in the sieve area 6. Furthermore, a discharge port 13 is provided at the lowest position of the lower partition plate 5 to guide the coarse grains M ₃ to the outside of the grain 1 . The upper partition 7 is punched out in the center so that the sorting tube 20 can be rotatably fitted therein, and in the removal area 8 of the grain 1, the inner peripheral wall is welded or the like so that the upper partition 7 is connected to the axis of the grain 1. The sorting tube 20 is installed obliquely from the inner peripheral wall of the grain 1.
It protrudes toward the outer peripheral wall of. The sorted grain M ₃ that has been selectively supplied into the take-out area 8 is prevented from entering the sieving area 6. Moreover, the upper partition body 7
An outlet is provided at the lower end of the grain body 1 to guide the sized grain M ₃ to a storage tank 14 attached to the outside of the upper part of the grain body 1 . A bearing 15 is provided in the center of the canopy 9 to support the upper shaft 32 of the grain frying body 30.
A rubber brush 16 is attached to the inner wall of the sieving area 6 to lightly contact the outer peripheral surface of the sorting tube 20 to prevent clogging. The grain 1 thus formed is most commonly formed to have a circular cross section, but may of course have a polygonal shape. In addition, 17 is the sized grain stored in the storage tank 14.
18 is a shutter for opening and closing the cutting port 17 of _M3 , and 19 is a driving device for the shutter 18.

The main parts of the sorting tube 20 are an introduction part 21 located at the bottom, a discharge part 25 located at the top, and an introduction part 2.
1 and the discharge part 25. It looks like they are placed above and below.
That is, the sorting tube 20 has a cylindrical shape as a whole, and the introduction part 21 fits into the hole in the lower partition plate 5 of the grain 1, and the discharge part 25 fits into the hole in the upper partition plate 7. It is erected through the lower partition 5 and the upper partition 7 so that the screening section faces the sieving area 6. A part near the bottom of the introduction part 21 includes a grain receiving part 22 whose upper edge extends in a funnel shape, and a plurality of inlets arranged along the inner lower edge of the grain receiving part 22. There are 23. The tip of the supply port 12 faces the grain receiving section 22, and the rice grains _M1 supplied to be sorted are introduced into the introducing section 21. The lower part of the introduction part 21 is received by a rotary disk 24. On the outer periphery of a portion of the discharge section 25 close to the top plate 26, there is a discharge section in which a plurality of discharge windows 27 are arranged through which the sorted grain _M3 is discharged. The discharge window 27 is arranged above the upper partition 7, and a bearing 28 is provided at the center of the top plate 26 and rotatably fitted onto the upper shaft 32. The sorting section 29 is a cylindrical body like a basket interposed between the introducing section 21 and the discharging section 25 to connect them. The circumferential surface thereof is provided with corrugated corrugations in the circumferential direction over substantially the entire length in the vertical direction. A large number of pleats may be provided in a spiral shape, and when the pleats are provided in a spiral shape, it is preferable to have an inclination that matches the spiral reed angle of the fried grain body 30, which will be described later. By applying these pleats, the sorting section 29
The strength of is supplemented. Numerous mesh holes (not shown) are bored in the circumferential surface of the sorting section 29. The size of the mesh pores is such that coarse particles M ₂ having a small particle size can pass therethrough, but large particles M ₃ cannot pass therethrough. The mesh holes are also provided in the outwardly projecting portions of the uneven folds, thereby making it easier for the coarse particles M ₂ to be sieved out to the sieving area 6. The shape of the mesh holes is horizontally elliptical, approximating the shape of ordinary rice grains, but of course, if it is possible to sieve out regular grains _M3 and miscellaneous grains _M2 , It doesn't matter what you do.

The main body of the grain frying body 30 is a hollow shaft 31, which is housed inside the sorting tube 20, and an upper mandrel 32 and a lower mandrel 33 are respectively vertically disposed at the center of the upper end surface and the lower end surface through members. ing. The upper shaft 32 passes through the center of the bottom of the sorting tube 20 and is connected to the rotating shaft of the motor 11 via the gearbox 10. In this way, the hollow shaft 31 is rotatable. A continuous spiral rib 34 is screwed onto the outer circumferential surface of the hollow shaft 31 along its entire length in the vertical direction, and the periphery of the rib 34 creates a gap between the sorting tubes 20 to the extent that rice grains do not leak. Rib 34 has a lead angle of approximately 10~
Install an inclined screw in the range of 25°. The rice grain M ₁ placed on the upper surface of the rib 34 is rotated by the rotation of the grain frying body 30 (rib 3
Those with right-handed screws are rotated clockwise in plan view, and those with left-handed screws are rotated counterclockwise), but if the lead angle is If it is steep, it will be difficult to carry it upward;
Therefore, high-speed rotation is required, and if the lead angle is gentle, it can be easily transported upward by slow rotation. However, if the rotation is slow, the rice
The centrifugal force acting on _M1 becomes weaker, and the sieving efficiency decreases. Therefore, the lead angle of the ribs 34 must be determined in relation to the rotational speed of the grain lifting body 30 and the sieving efficiency.

Since the sorting tube 20 and the grain frying body 30 are erected in the above-mentioned concentric relationship, it goes without saying that they rotate concentrically, but the directions of rotation are opposite to each other. The reverse rotation mechanism is housed within the gearbox 10. That is, the rotation of the grain frying body 30 is directly transmitted by the rotational force from the motor 11 which is pivotally connected to the lower shaft 33, but the rotation of the sorting cylinder 20 is caused by a gear on the inner peripheral surface of the rotary disk 24. Teeth (not shown) are engraved, while a gear wheel (not shown) is also fitted to the lower shaft 33,
Rotational force is indirectly transmitted from the motor 11 by a planetary gear (not shown) that meshes with the gear teeth of the rotary disk 24 and the teeth of the gear wheel of the lower mandrel 33 at the same time. The rotational speed ratio between them is about 1:2.5, and in the example, the rotational speed of the grain frying body 30 is 200 rpm, and the sorting cylinder 2
The rotation speed at zero was 80 rpm. In addition, the sorting tube 20
Of course, the rotation of the grain frying body 30 and the grain frying body 30 may depend on separate drive sources. The mutual reversal and rotational slow speed relationship between the sorting tube 20 and the fried grain body 30 are based on the second
It exhibits the effects described below with reference to the drawings. That is, FIG. 2 is a plan sectional view obtained by cutting the sorting cylinder 20 and the fried grain body 30 in the vicinity of approximately the center of their bodies, and viewing this from above. The hollow shaft 31 and the rib 34 rotate at high speed in the direction of the solid line arrow, the sorting section 29 rotates at low speed in the direction of the dotted line arrow, and the rice grains M ₁ placed on the rib 34 to be sorted rise in the direction of the dashed-dotted line. However, at the same time, it is pressed against the inner peripheral surface of the sorting section 29 by centrifugal force, and at that time, it receives a tensile force due to the contact resistance with the sorting section 29, which rotates in the opposite direction, and thus moves in the direction of the dashed-dotted line. The upward bias of is further promoted. However, the coarse grains _M2 , which are smaller than the mesh holes 29', pass through the mesh holes 29' due to centrifugal force and are discharged into the sieve area 6. Moreover, since the sorting section 29 rotates at a low speed, it does not block the passage of the miscellaneous particles _M2 . As can be seen from this, the sieving action on the rice grains M ₁ comes to work around the entire circumference of the sorting section 29, which ultimately contributes to improving the sorting efficiency. Furthermore, when this is compared with the conventional sorting network _A2 shown in FIG. 5, it can be seen that the sorting efficiency can potentially exceed several times.

Next, referring to FIG. 1, the implementation status of the sorting work will be explained. Rice grain M ₁ to be sorted is supply port 1
2, passes through the grain receiving section 22 and the inlet 23,
Some of them reach the bottom of the introduction part 21, and some of them are placed on the ribs 34 below, but in any case, the ribs 34 are supported by the mutually assisted lifting action caused by mutually counter-rotating the grain lifting body 30 and the sorting tube 20. The small miscellaneous particles M2 are gradually transported upward along the spiral surface, and when they reach the sorting section 29 beyond the upper edge of the introduction section 21, the small particles _M2 pass through the mesh holes due to centrifugal force and enter the sieve area 6. The grains that are sieved out and fall onto the lower partition 5 are collected downward along the slope, and are eventually discharged to the outside of the grain 1 through the discharge port 13. In this way, all of the coarse grains _M2 of the rice grains _M1 supplied for sorting are sieved out before reaching the upper edge of the sorting section 29. However, some of the rice grains _M1 have a grain size that is very close to the size of the mesh holes, and these grains cannot completely pass through the mesh holes, blocking the mesh holes and causing a clogging state. It may become. If left in this condition,
In order to prevent this from eventually failing to function as a sorter, a rubber brush 16 is vertically installed on the inner surface of the grain 1. The clogged rice grains touch the brush 16, some are pushed back into the sorting section 29, some are ground up, and the outer surface of the sorting section 29 is constantly swept and kept free of clogging. be done. The sorted grain M ₃ thus transported to the discharge section 25 is discharged from the discharge window 27 at the uppermost end of the sorting tube 20 and the grain frying body 30 to the take-out area 8, and falls onto the upper partition plate 7. The grains M ₃ fall down along the slope, and all the released sized grains M ₃ are temporarily stored in the storage tank 14 . A weighing platform C is installed below the storage tank 14 as in the conventional case, and a packaging bag C ₁ is placed thereon. In order to bag the sized particles _M3 , first open the shutter 18 wide, and when the amount of sized particles in the bag _C1 approaches the predetermined amount,
The shutter 18 is brought close to the closed state to reduce the opening area of the cutting port 17, and when the fixed amount is reached, the shutter 18 is completely closed.
These series of operations related to bagging are controlled by a control wired in sequence to automatically control the detection signal of a weight detector (not shown) attached to the weighing platform C, the drive signal to the shutter drive device 19, etc. This is done using a device.

(Study of Alternative Embodiments) The vertical grain sorter according to the present invention has the above-described structure and sorting operation, but the gap 5' between the lower partition plate 5 and the introduction part 21 and the The gap 7' between the upper partition 7 and the discharge section 25 is so small that it does not interfere with the rotation of the sorting tube 20 and does not allow rice grains to pass through, so that the centering accuracy of the sorting tube 20 can be maintained accurately. If the gap 5',
7' expands and contracts, and as a result, when the sorted particles M ₃ are discharged from the discharge window 27 into the take-out area 8, they may leak from the gap 7' towards the sieving area 6, or they may be caught in the gap 7' and fall into the sorting tube 2.
0 may obstruct the rotation of the grain frying body 30, and similarly, the miscellaneous grains _M2 sieved from the sorting section 29 to the sieving area 6 may leak toward the feeding section 4 through the gap 5'. There is a possibility that the grains may become caught in the gap 5' and obstruct the rotation of the sorting cylinder 20 and the grain frying body 30, eventually impairing the function of the sorting machine. In order to prevent such problems, we took measures as shown in Figure 3. That is, the upper eaves 4 are located below the discharge window 27 of the discharge section 25.
On the other hand, the upper sheath 41 is erected on the upper surface of the upper partition 7 so as to surround the discharge part 25, and the upper edge of the upper sheath 41 is provided so as to be covered under the eaves of the upper eave 40. be. Similarly, the introduction section 21
A lower eave 42 is provided around the upper edge, and a lower sheath 43 is provided on the upper surface of the lower partition plate 5 so as to surround the introduction part 21.
is erected so that the upper edge of the lower sheath 43 is covered under the eaves of the lower eave 42. By taking such measures, it is possible to remove the discharge area 8 from the discharge window 27.
The sized particles M ₃ discharged from the filter will not get caught in the gap 7' or leak into the sieving area 6, and similarly the coarse particles M ₂ sieved out from the sorting section 29 will not get caught in the gap 5'. or leaking into the supply area 6 can be completely prevented.

"Effects of the Invention" As is clear from the above explanation, the vertical grain sorter according to the present invention divides the inside of the grain into a feeding area, a sieving area and a take-out area by a lower partition and an upper partition. The upper partition that clearly divides the extraction area into the extraction area is installed diagonally and protrudes inward from the inner circumferential wall of the grain. Since the structure accommodates the sorting tube and the grain frying body, the grains to be sorted are fed from the side part corresponding to the waist of the sorter, and the fed grains are fed into the sorting part during the frying process. The grains are sorted into regular grains and miscellaneous grains on a wide circumferential surface that covers almost the entire circumference, and the grains are smoothly taken out of the sorter along the slope of the upper partition through the discharge section at the top of the sorting cylinder. . Therefore, the present invention produces the effects listed below.

The overall operations, such as supplying grain to be sorted, taking out sorted grains, and packing them into bags, are extremely efficient.

Since it is easy to supply the grains to be sorted and to take out the sorted grains, the grains are less likely to be damaged.

Sorting efficiency and sorting efficiency are improved several times compared to conventional sorting machines.

By combining grain frying and sorting functions,
Since the entire unit is compact, it can be installed stably in an extremely small footprint.

The workshop can have a large surplus space, which can be used for other related tasks.

[Brief explanation of the drawing]

1 to 3 show the vertical grain sorting machine of the present invention, in which FIG. 1 is a side sectional view of the whole, and FIG. 2 is a plan sectional view of the sorting cylinder and the grain frying body. Figure 3 is a cutaway side view showing the improved upper and lower parts of the sorter, and Figure 4 shows the conventional granule sorter and granule lifter installed together. A schematic side view and FIG. 5 are front sectional views of a sorting net showing the sorting action of a conventional particle sorter. DESCRIPTION OF SYMBOLS 1... Grain, 5... Lower partition plate, 7... Upper partition body, 12... Supply port, 14... Storage tank, 2
0... sorting tube, 21... introduction part, 25... discharge part, 29... sorting part, 30... fried grain body, 31...
Hollow shaft, 34...rib, 40...upper eave, 41...
...Upper sheath, 42...Lower eave, 43...Lower sheath.

Claims (1)

[Claims] 1. A lower partition and an upper partition arranged inside provide a supply area for supplying grains from the outside in order from the bottom to the top, a sieve area for sieving out miscellaneous grains, and a take-out area for taking out the grains. The whole grain has a cylindrical shape, and includes a vertical cylindrical grain body, an introduction part housed within the grain body and facing the supply area, a sorting part facing the sieving area, and a discharge part facing the take-out area. In a vertical sorting machine consisting of a sorting tube and a fried grain body rotatably housed in the sorting tube, the upper partition is installed obliquely with respect to the axis of the grain, and the upper partition body is arranged obliquely with respect to the axis of the grain, and the sorting tube is separated from the inner peripheral wall of the grain. 1. A vertical grain sorting machine, characterized in that the vertical grain sorting machine is provided with an outlet for taking out sorted grains, which protrudes toward the outer circumferential wall of a cylinder, and is provided at the lower end side of the upper partition.