JPH0342951B2 - - Google Patents

Description

[Detailed description of the invention] TECHNICAL FIELD The present invention relates to improvements in shell grain sorting equipment.

In order to sort out impurities such as dust, pulp, fragments, and sand grains mixed in the shell grains by specific gravity, the shell grains containing the foreign matter are fed to a sorting device equipped with a sorting air passage, and the shell grains are separated from the sorting air passage. Wind is sent from the side while the particles are flowing down, and the heavy shell grains are sent to the discharge section near the beginning of the sorting air channel, and lightweight foreign matter is sent to the discharge section near the end of the sorting air channel. Tokuko 51-
Devices such as No. 129757 are known.

The present invention provides an apparatus equipped with the above-mentioned sorting air passage, in which a sorting chamber in which a fluid shell passage and a ventilation passage are arranged in tandem is provided at the beginning end of the sorting air passage, and at the terminal end of the sorting air passage. By providing a separation chamber with an inclined separation plate at the top of the screen, the separation chambers and separation chambers installed at the front and rear of the sorting air channel can achieve high efficiency of wind separation of heavy shell grains and efficient separation of foreign matter. The purpose of this invention is to develop and provide a high-performance device that performs wind separation and reliably improves the quality of the sorted shell grains and useful impurities.

The present invention will be explained with reference to embodiment figures. Reference numeral 1 is a box-shaped machine frame, and a supply tank 2 is installed on one side of the upper part of the machine frame 1.
A vibrating conveying gutter 3 equipped with a vibration conveyor trough 3 and an air exhaust pipe 4 connected to an air exhaust fan (not shown) on the other side are arranged respectively, and the first part of the sorting air passage 5 housed inside the machine frame 1 is installed. The vibrating conveyance gutter 3 is installed in the wind selection chamber 6 provided on the end side.
The air sorting chamber 6 is provided with an air supply window 7 at its front end, and a shell particle discharge channel 9 is connected to a discharge port 8 provided at the bottom of the air sorting chamber 6. The terminal end side is enlarged to form a separation chamber 10, and an air exhaust port 11 provided on the upper wall of the separation chamber 10 is connected to the air exhaust tube 4, and the lower end of one side inclined wall 12 provided at the bottom thereof. A sloping outflow passage 15 provided with a ventilation window 13 and a discharge conveyor 14 is connected to the bottom wall 16 of the slanted outflow passage 15 or an extension thereof at an appropriate interval along the wall of the one side slanted wall 12. Inclined separation plates 18 and 19 are mounted in parallel via 17, and 20
21 is a flow path guide plate in the sorting air passage 5; 22 is an on-off valve for the ventilation window 13; 23
is the air volume regulating plate, 24 is the supply port of the supply tank 2, 2
5 is a flow path, 31 is a frame housing the supply tank 2, and 33 is a locking rod for the elastic spring 32. Inside the wind selection chamber 6, a partition wall plate 27 with a tilting plate 26 is installed in the center, and the shell grains flowing down from above are fed by flowing down through a shell channel 28 with a tilting plate 26. Air selection is carried out by the wind flowing in from the wind window 7, and the wind flowing in from the lower part of the grain size discharge passage 9 passes through the ventilation passage 29 side and flows upstream to the sorting air passage 5.

With the above configuration, the shelled grains (for example, brown rice) fed into the supply tank 2 are transferred to the vibrating conveyance gutter 3.
The air flows down the gutter surface due to the vibration action of the vibrating device 20, flows down from the gutter end into the flow path 25, and flows into the air selection chamber 6 provided at the beginning end of the air selection path 5. In the wind sorting chamber 6, while the early brown rice flows down the flow shell channel 28 in a zigzag pattern, the suction force of the wind blower (not shown) connected to the wind exhaust pipe 4 causes the wind supply window on the wall of the machine frame 1 to open. Fresh air from outside the machine flows in from 7 and is air-sorted, and the heavy sized grains of brown rice flow down to the shell grain discharge channel 9 at the bottom due to their own weight and are taken out of the machine. In addition, small, lightweight immature grains, crushed grains, and
Contaminants such as dust float to the surface by the sorting air and flow out to the upper end side of the ventilation passage 29, and the contaminants are reliably pushed up by the strong wind flowing upstream from the bottom to the top of the ventilation passage 29. The dust flows into the separation chamber 10 through the screening air passage 5 together with the dust-laden air. In the separation chamber 10, the dust-containing wind hits the installed inclined separation plate 18 together with the impurities, and the useful impurities such as small immature grains and crushed particles are separated from the wind by their own weight and moved to the inclined separation plate 18.
While flowing down to the inclined separation plate 19 below, the particles are separated by a part of the wind flowing in from the ventilation window 13 of the inclined outlet passage 15 through the interval 17, and the foreign substances attached to the foreign matter are Dust and the like are separated, the dust rises to the surface and joins the dust-containing wind, and only the re-sorted contaminants flow down to the bottom of the inclined outflow channel 15 and accumulate there, and are carried out of the machine by the discharge conveyor 14. taken out. In addition, dust-containing wind such as dust and dust flows upstream on the surface of the inclined separation plate 18 and is exhausted to the outside of the machine from the air exhaust port 11 in the upper wall portion through the air exhaust pipe 4.

According to claim 2, the supply tank 2 is formed as a suspended tank device that opens and closes the discharge valve 34 by vertical movement of the tank 2, so that the shell particles fed into the supply tank 2 are When the amount increases, the lever 30 suspending the tank 2 loosens the elastic spring 32 and descends, and the discharge valve 34 connected to the operating link 35 gradually opens, and the shell of the supply tank 2 When the amount of shell grains decreases, the tank 2 rises and the discharge valve 34 gradually closes, so even if the amount of shell grains fed into the supply tank 2 changes intermittently, the storage in the shell tank will be reduced. This has the effect of keeping the amount of shells at an appropriate level at all times, regulating the amount of shells discharged appropriately, and maintaining the wind selection effect of the sorting air channel well and smoothly.

As described above, the shell grain sorting device of the present invention performs the wind-selecting action of heavy shell grains at a high efficiency in the wind-selecting chamber provided at the beginning end of the sorting air path, and also performs wind-selecting of separated impurities. Since the action is carried out in the separation chamber provided at the end of the sorting air path, it is possible to reliably improve the quality of the sorted shell grains and the useful contaminants.

[Brief explanation of drawings]

The drawings are embodiments of the present invention, and are side sectional views of the device. DESCRIPTION OF SYMBOLS 1... Box-shaped machine frame, 2... Supply tank, 3... Vibrating conveyor gutter, 4... Wind exhaust tube, 5... Sorting air path, 6...
...Air selection room, 7...Air supply window, 8...Exhaust port, 9...
Shell discharge channel, 10... Separation chamber, 11... Ventilation port, 12... One side inclined wall, 13... Ventilation window, 14
... Discharge conveyor, 15 ... Inclined outflow path, 16
... bottom wall, 17 ... interval, 18 ... inclined separation plate,
19... Inclined separation plate, 20... Vibration device, 21...
...Flow path guide plate, 22...Opening/closing valve, 23...Air volume regulation plate, 24...Supply port, 25...Flow path, 26...
... tilting plate, 27... section wall board, 28... drift shell path,
29... Ventilation passage, 30... Leopard rod, 31... Frame, 32... Elastic spring, 33... Locking rod, 34...
...Discharge valve, 35...Operating link.

Claims (1)

[Scope of Claims] 1. A vibrating conveyor gutter with a supply tank mounted on one side of the upper part of a box-shaped machine frame with a built-in sorting air passage, and an exhaust pipe connected to an exhaust fan on the other side. death,
The discharge side of the vibrating conveyance gutter is connected to a wind selection room provided at the beginning end of the selection air passage, and a wind supply window is provided in the front wall of the wind selection room, and a shell is connected to the discharge port provided at the bottom of the wind selection room. A separation chamber is formed by connecting the grain discharge channels and enlarging the terminal side of the sorting air path, and connecting an air exhaust port provided on the upper wall of the separation chamber to the air exhaust pipe, and providing a separation chamber at the bottom thereof. A sloping outflow path equipped with a ventilation window and a discharge conveyor is connected to the lower end of the slanted wall on one side, and the bottom wall of the slanted outflow path or an extension thereof is spaced at appropriate intervals along the wall surface of the slanted wall on one side. A shell grain sorting device characterized in that inclined separation plates are installed in parallel through the . 2. The shell and grain sorting device according to claim 1, wherein the supply tank is formed as a suspended tank device in which a discharge valve opens and closes by moving the tank up and down.