JP4971885B2 - Kodama removal device - Google Patents

Description

  The present invention relates to a cereal technology, and more particularly to an apparatus for removing jasper that may be mixed in the cereal process.

As an apparatus for removing cocoons that may be mixed in cereal grains in the cereal process, for example, an apparatus described in Patent Document 1 is known. Such a device for removing cocoons uses a net having a mesh size (mesh size) smaller than the grain and sucks it from below the net, thereby leaving the grains on the net and leaving the cocoons under the net. It is a mechanism for sieving. By providing the apparatus in the middle of the grain conveyance path after the cereal, it is possible to remove straw powder smaller than the grain.
JP 2004-261864 A

  In the grain transporting path after pulverization, there is jasper that originates from the fact that the cocoons mixed in the cereal adhere to a certain part of the passage and grow and peel off as a lump. Since this jasper has a particle size larger than that of the grain, it cannot be sifted out by the above-mentioned apparatus, and remains on the net together with the grain, and is often packaged while being mixed in the grain. In the case of rice, even if it is mixed with rice balls, there is no particular problem because the rice balls melt out during rice sharpening before cooking, but there is a complaint that a hard rice ball is mistaken for a stone. Sometimes countermeasures are desired.

  The present invention is based on such a technical background, and proposes a jasper removal device having a mechanism capable of removing the jasper before bagging after grain polishing.

The jasper removal device according to the present invention has a mesh size through which grains pass and vibrates up and down while rotating horizontally, a discharge path provided below the sieve mesh, and a housing surrounding the sieve mesh And comprising. A raised bank portion is provided around the periphery of the sieve mesh, and the inner wall side of the bank portion is inclined. The jasper removal apparatus is configured such that the grains transferred onto the operating sieve mesh pass through the sieve mesh and are discharged to the discharge path, while foreign matters larger than the grains mixed in the grain are sieved. In addition to remaining on the mesh, the foreign matter remaining on the sieve mesh climbs up the inclined surface, passes over the bank portion , and is discharged from the peripheral edge of the sieve mesh into the housing.

  According to the jasper removal device of the present invention, contrary to the above-described conventional device, the grain passes through the sieve mesh, and foreign matter such as jasper larger than the grain remains on the sieve mesh. Therefore, by installing the jasper removal device immediately before the bagging device or the like, foreign substances having a large diameter such as jasper that can be mixed in the grain to be bagged can be eliminated.

  In addition, foreign matter that has been sieved and remains on the sieve mesh is sent out toward the periphery of the sieve mesh with the centrifugal force and vibration because the sieve mesh rotates horizontally and vertically vibrates. Then, it is discharged from the peripheral portion to the outside of the sieve mesh, that is, into the housing surrounding the sieve mesh. That is, the screened foreign matter is separated and removed from the grain flow path during operation of the jasper removal device.

  If the foreign particles of foreign matter that have been sieved remain on the sieve mesh, they may be crushed by the grain that flows in after that, resulting in a small particle size and passing through the sieve mesh. In order to prevent this, the candy removal device of the present invention rotates the sieve mesh and vibrates up and down so that the screened foreign matter can be discharged out of the peripheral edge during operation of the device. It is designed to eliminate foreign substances from

  A preferred embodiment of the present invention is shown in FIGS.

  The jasper removal device 1 in this example is used as a grain in the rice milling process, and is disposed immediately before the bagging device in the white rice conveyance path after the milling. Therefore, the sieve screen 10 is a disc shape having a mesh size (for example, 3.5 × 16 mm) through which rice grains pass, and is provided so as to horizontally rotate and vertically vibrate. Specifically, the rotation shaft hole 11 is recessed at the center of the sieve screen 10, and a plurality of position fixing pins 12 are provided to protrude downward at equal intervals around the rotation shaft hole 11. The screen 10 vibrates up and down by the rotation shaft hole 11 and the position fixing pin 12 engaging with the rotation shaft M2 and the position fixing hole M3 in the drive shaft plate M1 of the motor M installed as described later. Can be rotated horizontally as possible.

  A raised bank portion 13 is provided around the periphery of the screen 10 so as to prevent the rice transferred on the screen 10 from leaking outside. The bank 13 has an inclined surface 14 on the inner peripheral side, and the rice is dammed up, while the jasper with a particle size larger than the grain of rice can climb up the inclined surface 14 and pass over the bank 13. It has become.

  Below the sieve screen 10, there is provided a discharge path 20 that receives the passed rice and discharges it to the conveyance path that follows the next process. The discharge path 20 of the present example is formed as a funnel-shaped tube including a wide receiving portion 21 and a discharge port 22 following the center. And since the discharge path 20 is provided in this way, in the case of this example, the motor M for horizontally rotating the sieve screen 10 is an angle member or the like (see FIG. 6) spanned over the discharge port 22 of the discharge path 20. (See dotted line). A drive shaft plate M1 is mounted on the drive shaft of the motor M, and the drive shaft plate M1 has a cross-sectional hat in which a flange portion M4 is provided around the lower end of a rotary shaft M2 that forms a central portion fixed to the drive shaft. Is. The rotation shaft M2 protruding upward that forms the center portion is inserted into the rotation shaft hole 11 of the sieve mesh 10 so as to be slidable in the vertical direction, and the insertion port M3 formed in the flange portion M4 around the lower end of the rotation shaft M2. The position fixing pin 12 of the sieve screen 10 is inserted so as to be slidable up and down.

  In this example, a housing 30 is provided so as to surround the sieve screen 10 and the discharge path 20. That is, the housing 30 has a shape in which an opening through which the discharge port 22 of the discharge path 20 passes is formed in the center of the bottom, and a lid portion 32 provided with a rice inlet 31 is placed thereon to cover the housing 30. . Further, a jasper discharge port 33 is further provided at the bottom of the housing 30, and the jasper discharged into the housing 30 is discharged from the jade discharge port 33. In the case of this example, a scraper 34 that rotates along the bottom surface of the housing 30 is provided by the scraper motor SM in order to forcibly discharge the jasper discharged into the housing 30 from the jasper discharge port 33. The scraper 34 is formed of an annular chain part 35 concentric with the housing 30 and a blade part 36 attached so as to protrude inside the annular chain part 35, and the annular chain part 35 is driven by the scraper motor SM to rotate. In accordance with this, the blade portion 36 rotating on the bottom surface of the housing 30 sweeps the jasper into the jasper discharge port 33.

  Inside the lid portion 32 that covers the upper portion of the housing 30, a guide wall 37 is suspended to come in contact with the jasper that remains on the sieve mesh 10 and move to the peripheral portion and to move in the discharge direction. The guide wall 37 is made of a flexible resin that is installed above the bank portion 13 of the sieve screen 10 and formed in a tip shape along the shape of the upper surface of the bank portion 13. And the guide wall 37 is not inclined along the radial direction of the sieve mesh 10 so as to push out the jasper on the sieve mesh 10 (that is, not perpendicular to the rotational direction of the sieve mesh 10), but tangent. Inclined to some extent, the jasper is set to be discharged along the guide wall 37 over the bank portion 13.

  A control unit CU is provided on the outer surface of the housing 30 for controlling the start and stop of the jasper removing device 1 and the setting of the rotational speed of the sieve mesh 10. If the rotational speed of the sieve screen 10 is too fast, even rice will get over the bank portion 13, and if it is too slow, the jasper cannot be discharged from the peripheral portion. It is optimal to set the screen 10 to rotate 22 to 27 per minute.

  Further, a cam driven path 15 is provided around the periphery of the sieve screen 10. In the case of this example, the cam driven path 15 is provided by extending the outer end member of the bank portion 13 downward and connecting an annular belt-like member to the lower end of the extended portion. The cam driven path 15 is formed with peaks and valleys, that is, irregularities. On the other hand, a large number of cam rollers 38 are fixed to the side wall portion of the housing 30, and the cam rollers 38 abut on the cam driven path 15 from below. That is, the sieve screen 10 of this example is supported by the cam roller 38, and when the sieve screen 10 rotates, the sieve screen 10 vibrates up and down according to the shape of the cam driven path 15.

  When the motor M is started and the sieve mesh 10 is rotated, the sieve mesh 10 vibrates up and down while rotating horizontally by the action of the cam driven path 15 and the cam roller 38. When the rice is transferred from the upstream conveyance path through the inlet to the sieving mesh 10 during this operation, the rice passes through the sieving mesh 10 and is discharged to the discharge path 20 while being mixed into the rice. The hard jade that remains is left on the sieve screen 10. Then, the jasper remaining on the sieve mesh 10 is driven to the peripheral edge of the sieve mesh 10 by the rotation and vibration of the sieve mesh 10 and finally comes into contact with the guide wall 37 and passes over the bank portion 13. Then, it is discharged into the housing 30 from the peripheral edge of the sieve mesh 10.

  The jasper discharged to the housing 30 is scraped by the scraper 34 to the jasper discharge port 33 and discharged.

  As described above, the polished rice passes through the sieve screen 10 and the jasper larger than the rice grains remains on the sieve mesh 10, so if the jasper removal device 1 is installed immediately before the bagging device, It is possible to eliminate the jasper that can be mixed in the bagged rice. In addition, the jasper remaining on the sieve screen 10 is sent out toward the periphery along with the centrifugal force and vibration caused by the rotation and vertical vibration of the sieve screen 10, and passes over the bank portion 13 to be passed from the periphery to the sieve mesh. 10, that is, into the housing 30 surrounding the screen 10.

  During operation of the jasper removal device 1, the screened jasper is separated from the rice flow path and eliminated, so there is no need to stop the device halfway and clean the straw. That is, if the candy screened rice cake remains on the sieve mesh 10, it may be crushed by the rice that flows in thereafter and the particle size may be reduced, and may pass through the sieve mesh 10. It is necessary to stop and clean the device at any time. In the case of the jasper removal device 1 of the present embodiment, since the soot balls that have been screened are separated from the flow path of rice so that they can be discharged from the peripheral edge of the sieve mesh 10 during operation of the device, they have been broken. It is also possible to prevent the intrusion of jasper, and there is no need to stop and clean the device on the way.

The disassembled perspective view of the jasper removal apparatus which concerns on this invention shown in the state which removed the cover part. The perspective view of the jasper removal apparatus which concerns on this invention shown in the state which removed the cover part. The perspective view which looked at the sieve net from the back side. The top view of the jasper removal apparatus which concerns on this invention shown in the state which removed the cover part. The perspective view of the jasper removal apparatus which concerns on this invention shown in the state which attached the cover part. Sectional drawing of the jasper removal apparatus which concerns on this invention shown in the state which attached the cover part. The elements on larger scale of sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Jasper removal apparatus 10 Sieve net 13 Bank part 14 Inclined surface 15 Cam follower path 20 Discharge path 30 Housing 37 Guide wall 38 Cam roller

Claims (4)

A sieve mesh that has a mesh size through which the grain passes and vibrates up and down while rotating horizontally,
A discharge passage provided below the screen,
A housing surrounding the sieve mesh;
Comprising
A raised bank portion is provided around the periphery of the sieve mesh, and the bank portion is inclined on the inner peripheral side,
Grains transferred on the sieving mesh in operation pass through the sieving mesh and are discharged to the discharge path, while foreign matters larger than the grains mixed in the cereal remain on the sieving mesh. ,
The foreign matter remaining on the screen is scooped up the inclined surface, exceeds the bank portion , and is discharged from the peripheral portion of the screen into the housing. Ball removal device. 2. The guide wall according to claim 1 , further comprising a guide wall that hangs down from an inner side of a lid that covers an upper portion of the housing, the guide wall being in contact with the foreign material and directed toward a discharge direction. Kodama removal device. A scraper that is configured using an annular chain portion and a blade portion projecting inside the annular chain portion, and that rotates along the bottom surface of the housing;
The jasper removal device according to claim 1 or 2, wherein the scraper sweeps out foreign matter in the housing. A cam follower provided around the periphery of the sieve mesh;
A cam roller fixed to the housing and in contact with the cam follower from below;
With
The jasper removal apparatus according to any one of claims 1 to 3, wherein when the sieve mesh rotates, the sieve mesh vibrates up and down according to the shape of the cam follower path.

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