JPS6318467Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a vertical grain sorter that is capable of sorting thin grains (immature grains, etc.) with small grain thickness from grains, and also capable of weighing and bagging. .

Prior Art A vertical type sorter that removes fine grains while transporting grains to an upper storage tank was developed in 1983.
Publication No. 14269 etc. have been proposed.

Problems to be Solved by the Invention In such a sorting machine, a lifting spiral body is housed concentrically inside the upright sorting cylinder, and while the grains are being lifted by this spiral body, Since the fine grains are caused to leak out from the slit bored on the circumferential surface of the sorting cylinder by the centrifugal force acting on the grains, the generation of chafed grains and the sorting rate can be controlled depending on the setting of the lead and rotation speed of the spiral body. This led to problems such as a decrease in performance.

In other words, if the lead angle of the lifting spiral is steep, it will be difficult to transport it upwards, and therefore, when rotating at high speed, the large number of slits provided in the sorting cylinder will cause chafing of the grains, occurrence of broken rice, etc. If the reed angle is loose, it can be easily transported upwards even by low-speed rotation, but the centrifugal force acting on the grain is weak and the grain does not come into contact with the slit of the sorting cylinder. will increase, and the selection rate will decrease.

Therefore, in view of the skin abrasion and poor sorting of the sorting cylinder during transport, the inventor proposed the following idea: ``A rotary cylinder with helical blades is provided concentrically within the sorting cylinder which is rotatably installed upright. , a ``vertical sorting device for grains'' which removes fine grains by providing a grain feeding section in the upper part of the sorting cylinder and a discharge port in the lower part thereof, and allowing the fine grains to flow from the upper part of the sorting cylinder to the lower part by a rotary cylinder. (Japanese Patent Application No. 59-59091), but this required a separate grain lifting machine to transport the selected grains after sorting to an upper tank, resulting in a complex and bulky structure. .

The technical objective of this invention is to provide a compact vertical grain sorter that is free of concerns such as chafing and poor sorting caused by the lead and rotation speed of the helical body that conveys the grains.

Means for Solving the Problems In order to solve the above technical problems, the present invention
A spiral body for conveying grains fed from a supply section provided at the upper part of the sorting cylinder to the lower part of the sorting cylinder is installed in the sorting cylinder installed upright within the outer frame. A lifting spiral body for transporting grains into an upper tank is housed in an upright position, and a sorting cylinder and a descending spiral body are each formed to be rotatable concentrically.

Function The grains fed from the supply section at the top of the sorting cylinder are subjected to the centrifugal force of the descending spiral and gradually descend while coming into contact with the periphery of the sorting cylinder. Grain with a grain thickness smaller than this slit leaks out from the slit, and the selected grains that flow down to the bottom of the sorting cylinder are taken into the spiral for flowing down, and are transported by the spiral for lifting that is installed inside the spiral for flowing down. It is transported to the upper tank.

Embodiment An embodiment of the vertical grain sorter according to the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view showing the entire structure of this embodiment. In the figure, numeral 1 shows the entire vertical grain sorter, 2 is an outer frame, and 3 is a vertical grain sorter installed upright within the outer frame 2. , and has a number of slits on its circumferential surface. A supply hopper 4 is supported by the outer frame 2, and the lower end of the funnel is directed into the sorting cylinder 3. 5 is a bottom cover of the sorting cylinder 3, which is attached to the lower end of the sorting cylinder from below. Reference numeral 6 denotes a downward spiral body that stands concentrically within the sorting cylinder 3, and on the peripheral surface of the downward spiral body corresponding to the sorting cylinder 3, there is a spiral 6A in which the blades are inclined in the shape of an eave. It is wrapped. Further, within the downward spiral body 6, a lifting spiral body 7 is rotatably installed concentrically with the downward spiral body 6. Reference numeral 8 denotes a plurality of selected grain intake ports drilled on the circumferential surface of the lower end of the downward spiral body 6, and reference numeral 9 denotes selected grain discharge ports bored in the upper end surface and the upper end circumferential surface of the downward spiral member 6. .

10 is a plurality of rollers that come into contact with the outer circumferential surface of the sorting cylinder 3 to guide the rotation of the sorting cylinder; 11 is a roller that contacts the outer circumferential surface of the sorting cylinder 3 in the vertical direction to form the slits; It is a cleaning body that prevents clogging.
Consists of rubber plates, etc.

Reference numeral 12 denotes a fine grain shelf for collecting fine grains leaking from the sorting cylinder 3, which is provided in a band shape around the inner peripheral surface of the outer frame 2 facing the lower end of the sorting cylinder 3, and is connected to the fine grain shelf for sorting. The gap with the cylinder 3 is formed so that the fine particles that have fallen from the slit of the sorting cylinder 3 will not leak out. 13
is a fine grain outlet communicating with the fine grain shelf 12.
14 is a scraper that scrapes up fine grains falling onto the fine grain shelf 12 and discharges them from the fine grain discharge port 13, and is designed to rotate on the fine grain shelf while maintaining an appropriate gap with the surface of the fine grain shelf 12. It is fixed to the outer peripheral surface of the lower part of the sorting cylinder 3.

Next, the rotation mechanism will be described. 15 is a drive motor. 16 is a pulley A that is pivotally attached to the drive shaft 17, 18 is a pulley B that is pivoted to the driven shaft 19, and 20 is a pulley C that is pivoted to the driven shaft 19. Then, the pulley A16 and pulley B
18 are both directly rotated by the drive motor 15. Reference numeral 21 denotes a pulley D that receives rotational force from the pulley C, and a lower hollow shaft 2 that is slidably provided between the drive shaft 17 and the bearing 23.
It is pivoted to 2. Furthermore, the hollow shaft 22 is fixed to the bottom cover 5, and transmits rotational force to the sorting cylinder 3, which is fitted with the bottom cover 5. At this time, the pulley D has a larger diameter than the pulley C, and the sorting cylinder 3 is rotated at a low speed.

The drive shaft 17 is inserted through the center of the bottom cover 5 and is pivotally attached to the bottom surface of the downward spiral body 6 so as to rotate the downward spiral body 6, and is attached to a circle bored in the center of the bottom surface of the lifting spiral body 7. It is loosely fitted into the hole 24. 2
5 is an upper shaft, and the upper end of the upper shaft is connected to the gear case 2.
It is pivotally supported by a bearing 27 provided on the upper part of the lifting spiral body 7, and its lower end is fixed to the center of the upper end surface of the lifting spiral body 7.
Reference numeral 26 denotes a gear case provided above the tank 32, which converts the direction of rotation of the rotational force transmitted from the drive shaft 17 through the downward spiral body 7 and the upper hollow shaft 31, and which is connected to the upper shaft 25. A plurality of gear groups 26A for setting the rotational speed to be transmitted to the gears are installed inside. 28 is a gear A that is pivotally attached to the upper hollow shaft 31, and 29 is a gear B that is pivotally attached to the upper shaft 25, both of which are meshed in relation to the plurality of gear groups 26A for reverse rotation described above.

Reference numeral 31 denotes an upper hollow shaft. The gear A is rotatably attached to the upper part of the hollow shaft, and the lower part is fixed to the center of the upper end surface of the downward spiral body 6. Further, the upper shaft 25 slides inside the hollow shaft. It is movably inserted through the tank 32 and supported by a bearing 30 provided in the tank 32 .

Reference numeral 32 denotes a tank that temporarily stores the selected grains discharged from the selected grain discharge port 9 provided at the upper part of the spiral body 6 for flowing down. Exhaust valve 35 configured to close upon actuation
will be provided. 34 is a solenoid, which is electrically connected to a scale (not shown) installed below the selected grain discharge port 33. Further, the tank 32 is supported by the outer frame 2, and a notch 36 for rotatably inserting the downward spiral body 6 is provided at approximately the center of the bottom surface of the tank. Needless to say, the gap between the notch 36 and the downward spiral body 6 is formed to prevent grains from leaking out.

Reference numeral 37 denotes a display section that displays the measured values and the like from the scale.

Next, the operation of the above embodiment will be explained.

When the drive motor 15 is started, the downward spiral body 6 rotates via the pulley A and the drive shaft 17, and furthermore, the upper hollow shaft 31 fixed to the upper end surface of the downward spiral body 6 is rotated, and the upper hollow shaft 31 is fixed to the hollow shaft. Gear A28, a plurality of reverse gear groups 26A in the gear case 26,
The rotational force transmitted to the upper shaft 25 via the gear B29 that is fixed to the upper shaft rotates the lifting spiral body 7 fixed to the lower end of the upper shaft in a direction to transport the grains upward.

On the other hand, the rotational force of the drive motor 15 is
8. It is also transmitted to pulley D21 via pulley C20. Further, the rotational force of the pulley D21 rotates the sorting cylinder 3 in the same direction as the downward spiral body 6 via the lower hollow shaft 22 and the bottom cover 5. At this time, the rotation of the sorting cylinder 3 is decelerated due to the relationship between the pulley C20 (driving side) and the pulley D21 (passive side).

Now, while the sorting cylinder 3, the downward spiral 6, and the lifting spiral 7 are driven by the rotation mechanism as described above, raw grains, such as brown rice, are fed from the supply hopper 4.

As shown in FIG. 2, brown rice fed from the supply hopper 4 is slid to the tip of an eave-like spiral 6A wrapped around the outer circumferential surface of the rotating downward spiral 6, and centrifuged by the spiral. Under the force, the particles are forcibly scattered around and come into contact with the inner peripheral surface of the sorting cylinder 3, which rotates at a reduced speed in the same direction as the downward spiral 6, and are successively guided by the rotation of the spiral 6A to descend. At this time, the brown rice is stirred by the difference in rotation between the downward spiral and the sorting tube, and the entire brown rice comes into contact with the slit of the sorting tube. In this way, brown rice (fine grains) whose grain thickness is smaller than that of the slits formed on the circumferential surface of the sorting cylinder leaks from the slits and falls onto the fine grain shelf 12. Then, the fine grains on the fine grain shelf 12 are scraped out from the fine grain outlet 13 by a scraper 14 that rotates together with the sorting cylinder 3. Further, the grains clogging the slits of the sorting cylinder 3 are constantly removed by the cleaning body 11.

The brown rice (refined grains) that has not been removed by the slit falls into the bottom cover 5 and is taken into the flow-down spiral body through a refined grain intake port 8 bored on the circumferential surface of the lower end of the flow-down spiral body 6. It is then conveyed upward by the lifting spiral body 8. The selected grains that have reached the upper end of the descending spiral body 6 in this manner are discharged into the tank 32 from the selected grain discharge ports 9 provided in the upper end surface and the circumferential surface of the upper end of the descending spiral body 6.

The selected brown rice stored in the tank is discharged from the selected grain outlet 33 by pushing open the discharge valve 35, but this is done by operating a solenoid 34 that is energized by a signal from a scale (not shown). It is designed to automatically stop when it hits.

In the above embodiment, the sorting tube 3 is rotated at a reduced speed in the same direction as the descending spiral 6 to promote agitation of the brown rice descending along the inner circumferential surface of the sorting tube. Depending on the properties of the grains, the sorting cylinders may be rotated in different directions, or may not be rotated, within a range that does not damage the grains.

In addition, when replacing the sorting cylinder 3, as shown in FIG.
At the same time, the sorting cylinder 3 and the bottom cover 5 can be freely fitted and removed, while the upper shaft 25 and the lifting spiral body 7
By forming the joints between the upper hollow shaft 31 and the spiral body 6 to be removable (spline joints, etc.), the tank 32 and the supply hopper can be separated from the outer frame 2, and the sorting cylinder Extract body 3 from the machine.

Effects of the Device As described above, according to the present invention, the raw grains introduced from the upper part of the sorting cylinder set upright inside the outer frame are descended by the downward spiral set up inside the sorting cylinder. Since the grains are subjected to centrifugal force, the grains easily come into contact with the slits provided on the inner peripheral surface of the sorting cylinder due to this centrifugal force and gravity. In other words, there is no need for high-speed rotation of the spiral body, which is required when grains are sorted while being fed upwards, and less impact is applied to the grains. After passing through the sorting process, the selected grains are placed inside a spiral body for flowing down,
In addition, since grains are transported to the tank by a lifting spiral provided concentrically with the sorting cylinder and the downward spiral, there is no need to provide a lifting device separate from the sorting cylinder, making the grain compact as a whole. The drive mechanism is also compact and efficient.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of one embodiment of the present invention, Fig. 2 is a partially enlarged longitudinal sectional view of the same, and Fig. 3 is a partially cutaway perspective view showing the joint between the sorting cylinder and the bottom cover. . 1... Vertical grain sorter, 2... Outer frame, 3... Sorting cylinder, 4... Supply hopper, 5... Bottom cover, 6...
Flowing spiral body, 7... Helical body for lifting, 8... Selected grain inlet, 9... Selected grain discharge port, 10... Roller, 11... Cleaning body, 12... Fine grain shelf, 13...
Fine particle discharge port, 14... Scraper, 15... Drive motor, 16... Pulley A, 17... Drive shaft, 1
8... Pulley B, 19... Driven shaft, 20... Pulley C, 21... Pulley D, 22... Lower hollow shaft,
23... bearing, 24... circular hole, 25... upper shaft,
26... Gear case, 27... Bearing, 28... Gear A, 29... Gear B, 30... Bearing, 31...
Upper hollow shaft, 32...Tank, 33...Selected grain outlet, 34...Solenoid, 35...Discharge valve, 36...Notch, 37...Display section, 38...
Cut, 39...protrusion.

Claims (1)

[Scope of utility model registration request] A supply section for charging grains is provided in a sorting cylinder that stands upright in the outer frame, and a spiral body for flowing down is installed in the sorting cylinder, and the selected grains are temporarily stored in the upper part of the spiral body for flowing down. A tank is provided, and a lifting spiral body for transporting the selected grains into the tank is disposed inside the flowing spiral body, and the sorting cylinder, the flowing spiral body, and the lifting spiral body are each rotated concentrically. A vertical grain sorter characterized by being equipped with a rotation mechanism.