JPH0356299Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention consists of a grain lifting spiral body in which spiral blades are wound around the outer periphery of a cylindrical body in an outer shell body, and a grain lifting spiral body concentrically inserted into a large number of grains. The present invention relates to a vertical grain sorting machine that houses a sorting net body provided with small holes, feeds unsorted grains to the base of a grain-flinging spiral body, and sorts the grains while frying the grains.

``Prior art'' In a conventional vertical grain sorter, the small grains that pass through the sorting net and fall are scraped out by a plurality of lower scraping blades arranged at the bottom of the sorting net. It had been.

Further, there was no means for removing dust mixed in the unsorted grains fed to the supply hopper.

``Problem to be solved by the invention'' However, in such conventional vertical grain sorting machines, the force applied to the hem of the sorting net in the direction perpendicular to the axis is large, putting strain on the screen drive shaft of the sorting net. ,
Power loss was also large.

On the other hand, the unsorted grains supplied to the supply hopper are contaminated with a considerable amount of dust from the previous process, such as the hulling process, and conventionally a dust removal process was required after the sorting process.

The present invention has been developed by focusing on these conventional problems, and has a means for discharging small grains that does not apply excessive force to the hem of the sorting net and has little power loss, and at the same time provides a means for discharging small grains that can be fed easily. The present invention aims to provide a vertical grain sorter capable of removing dust from unsorted grains.

``Means for Solving the Problems'' The gist of the present invention for achieving the above purpose is as follows: (1) A supply hopper for supplying unsorted grains and a storage tank for storing selected grains. A grain lifting spiral body having a spiral blade wound around the outer periphery of a cylindrical body, and a sorting net body having a large number of small holes through which the grain lifting spiral body is inserted concentrically, inside an outer shell body provided outside the body. , comprising a drive means for relatively rotating the grain lifting spiral and the sorting net, and is provided at the base of the grain lifting spiral and receives the unsorted grains from the supply hopper, which scrapes up and sorts the unsorted grains. In the vertical grain sorting machine, the grain lifting spiral body consists of a sorting zone spiral body that rotates at high speed and a feed zone spiral body that rotates at low speed, and a plurality of whirlwind blades are arranged at the base of the sorting zone spiral body around the outer periphery of the grain receiving cylinder. A vertical grain sorting machine, characterized in that a discharge pipe for small grains and dust is provided on the outer shell near the whirlwind blades.

(2) The vertical type according to claim 1 of the utility model registration, characterized in that a large number of small holes through which small grains and dust pass are provided in the region of the grain receiving tube around which the whirlwind blades circulate. Exists in grain sorting machines.

"Operation" The unsorted grains supplied to the supply hopper enter the grain receiver provided at the base of the grain-lifting spiral, where they are raked up by the feed area spiral of the grain-lifting spiral rotating at a low speed. To go. Then, the grains are scattered outward by the strong centrifugal force of the sorting area helix rotating at high speed, subjected to the sorting action by the sorting net, and the small grains that have passed through the small holes of the sorting net are caught in the sorting net. It falls along the outer circumference of the body.

Good shells that do not pass through the small holes in the sorting net are lifted upwards and temporarily stored in a storage tank.

The small grains that have fallen along the outer periphery of the sorting net are discharged by the whirlpool blades, which are arranged at the base of the sorting area spiral body and are also rotating at high speed, and are sent to the outside through a discharge pipe. is discharged from.

Since the whirlwind blades rotate at high speed along the outer periphery of the particle receiving cylinder, they generate an air current toward the inner wall of the outer shell, which is strongly blown out from the discharge pipe. Floating dust is simultaneously discharged from the body along with small grains falling from above by this discharge airflow.

If the particle receiving tube has a large number of small holes in the area surrounding the whirlwind blade, the airflow is sucked from the particle receiving tube through the small holes, and some of the small holes are drawn from the particle receiving tube by the airflow. Discharge dust containing grains to the outside.

"Embodiments" Hereinafter, various embodiments of the present invention will be described based on the drawings.

As shown partially omitted in FIG. 1, the vertical grain sorter 10 includes a sorting net 1 that is rotatably installed in an outer shell 11 and rotates concentrically and in opposite directions.
7, a grain-floating spiral 20, a grain receiving tube 40 provided at the base of the grain-frying spiral 20, and a supply hopper 12 provided outside the outer shell 11 for receiving unsorted grains.
and a sorting net 17 and a grain frying spiral 2 attached to the back side of the base plate 14 forming the base of the grain receiving tube 40.
0 drive means 50, and a storage tank (not shown) provided on the side of the external head of the outer shell 11 to temporarily store polished grains.

The grain frying spiral body 20 is located approximately within the grain receiver cylinder 40,
It consists of a supply zone spiral body 25 that slowly rotates to scrape up unsorted grains from the bottom of the grain receiving tube 40, and a sorting zone spiral body 30 that rotates at high speed in tandem with this supply zone spiral body 25.

As shown in FIG. 1, a plurality of arm members 31 are provided at the lower end of the sorting area spiral body 30, extending outward and bent along the outer periphery of the particle receiving cylinder 40. A whirlwind blade 32 is fixedly installed.

As shown in FIG. 2, the whirlwind blade 32 is attached at an angle to the rotational direction of the arrow in the direction of suctioning air from the center.

The blade chamber A in which the whirlwind blade 32 rotates
The upper part is surrounded by a blade chamber upper plate 15 and the lower part is surrounded by a blade chamber lower plate 16 so that the air pressure becomes higher than atmospheric pressure and is discharged together with dust and the like.

The blade chamber upper plate 15 is open upward with a strong slope in the shape of a funnel, and the blade chamber lower plate 16 is provided with a discharge pipe 18 for guiding small grains and dust to the outside. This discharge pipe 18 is bent downward, and a bag filter is attached to the end of the pipe.

As shown in FIG. 4, the drive means 50 includes a drive gear 5 fixed to an output shaft 52 of a motor 51.
The drive shaft 55 of the supply zone spiral body 25 and the sorting zone spiral body 3 are driven by a group of driven gears meshing with the gears 3 and 54, respectively.
0 drive shaft 56 and the drive shaft 57 of the sorting net 17 are driven.

Next, the action will be explained.

The unsorted grains supplied to the supply hopper 12 are supplied to the grain receiver cylinder 40 through the communication pipe 13.

In the grain receiving tube 40, the unsorted grains are slowly fed upward by the supply area spiral body 25 that rotates slowly. And the sorting area spiral 30 rotates at high speed.
The grains sent there are thrown out in the radial direction by a strong centrifugal force and are separated by a sorting net 17.

The small grains that have passed through the sorting net 17 are transferred to the outer shell 11
falls downward along the inner wall of the blade chamber A and enters the blade chamber A.

In the blade chamber A, the whirlwind blades 32 rotate at high speed and generate a strong exhaust flow from the exhaust pipe 18, so the small grains, along with a large amount of floating dust, are
It is discharged along with this airflow and collected in a bag filter attached to the mouth of the discharge pipe 18.

Since the whirlwind blades 32 do not scrape out accumulated grains, they are not subjected to irregular mechanical forces and do not apply lateral forces to the hem of the sorting net 17.

Next, a second embodiment will be explained.

In this embodiment, as shown in FIG. 3, the grain receiving tube 40 has a large number of small holes 41 in the region where the whirlwind blades 32 circulate on its surface, through which dust smaller than small grains passes. It is perforated.

Next, its effect will be explained.

The whirlwind vane 32 constantly sucks out air from inside the particle receiving tube 40, and the outflowing airflow sucks out a large amount of suspended dust into the vane chamber A under the stirring action of the sorting area spiral body 30. Discharge pipe 18 along with small grains etc. that are sorted and fall.
discharge from.

"Effect of the invention" According to the vertical grain sorting machine according to the invention, a strong suction airflow is generated from the center in a part of the grain lifting spiral rotating at high speed, and a whirlwind is discharged to the outside together with the sorted small grains. Since the blades are provided, a large amount of dust contained in the grains can be sucked and discharged at the same time, eliminating the need for the next step of removing dust from the grains after sorting, and also making it possible to remove dust from the grains by removing the dust from the grains. Since no lateral force is applied to the shaft, the durability of the bearing section of the mesh drive shaft can be increased.

Furthermore, if the grain receiving tube is equipped with many small holes smaller than a small grain in the area around the whirlpool blade, a large amount of dust will be sucked in and discharged from the unsorted grain that is being fed and being raked. The above effect can be further enhanced.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a partially omitted vertical sectional view of a vertical grain sorter, and Figure 2 showing the grain lifting spiral in Figure 1. FIG. 3 is a perspective view of the grain receiving cylinder, and FIG. 4 is a configuration diagram of the driving means. A...Blade chamber, 10...Vertical grain sorter, 11
... Outer shell body, 12 ... Supply hopper, 14 ... Base plate, 15 ... Blade chamber upper plate, 16 ... Blade chamber lower plate,
17... Sorting net body, 18... Discharge pipe, 20... Grain frying spiral, 25... Supply area spiral, 30... Sorting area spiral, 31... Arm member, 32... Whirlpool blade, 40... Receiver Grain tube, 41...Small hole of grain receiving tube, 5
0...Driving means.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A supply hopper for supplying unsorted grains and a storage tank for storing selected grains are provided inside the outer shell body, and a spiral spiral around the outer periphery of the cylindrical body is provided. A grain lifting spiral body having a blade wound thereon, a sorting net body having a large number of small holes through which the grain lifting spiral body is inserted concentrically, and a driving means for relatively rotating the grain lifting spiral body and the sorting net body. in a vertical grain sorter that is provided at the base of a grain lifting spiral and that scrapes and sorts unsorted grains from a grain receiver that receives unsorted grains from the supply hopper, wherein the grain lifting spiral rotates at high speed. It consists of a sorting zone spiral body and a supply zone spiral body rotating at a low speed, and a plurality of whirlwind blades are arranged along the outer periphery of the grain receiving cylinder at the base of the sorting zone spiral body, and an outer shell near the whirlwind blades revolves. A vertical grain sorting machine characterized by having a discharge pipe for small grains and dust in the body. (2) The vertical type according to claim 1 of the utility model registration, characterized in that a large number of small holes through which small grains and dust pass are provided in the region of the grain receiving tube around which the whirlwind blades circulate. Grain sorting machine.