JP2001179186A - Powder and granular material inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the sorting accuracy in a secondary sorting section with high sorting accuracy while increasing the processing speed per unit time and to realize the compactification of an inspection device and the cost reduction by the simplification of device constitution with the constitution to equip the inside of a machine frame with a primary sorting section and the secondary sorting section side by side in a transverse direction. SOLUTION: A primary sorting guide body 1A has a flat guide surface for guiding powder and granular material groups for primary sorting in a broad single layer state and a secondary sorting guide body 1B has plural guide grooves for guiding the powder and granular material groups for secondary sorting in a state of dividing these groups to plural array-forms which are lined up in a transverse direction. These guide bodies are installed in juxtaposition in a tight contact state in the transverse direction. A transporting body 9A for primary sorting of a vibration type for loading and transporting the powder and granular material groups for primary sorting to the primary sorting guide body 1A and a powder and granular material group 9B for secondary sorting of a vibration type for loading and transporting the powder and granular material groups for secondary sorting to the secondary sorting guide body 1B are driven by a common vibration drive assembly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a primary sorting section for sorting a granular material group for primary sorting down into a normal product and a defective product while moving it down along a primary sorting guide, and a primary sorting thereof. The secondary sorting unit, which sorts the particles and particles for secondary sorting, which have been selected as defective in the section, down along the secondary sorting guide, and sorts them into normal and defective, has a common machine. A primary sorting storage unit that is provided in the frame in a horizontal direction and stores the primary sorting powder and granular material group to be supplied to the primary sorting guide, and a secondary sorting to be supplied to the secondary sorting guide. A secondary sorting inputting section for inputting a powdery or granular material group for use in a powdery or granular material inspection apparatus provided in the machine frame.

[0002]

2. Description of the Related Art The above-mentioned powdery and granular material inspection apparatus realizes easy installation of the powdery and granular material inspection apparatus by providing a primary sorting section and a secondary sorting section in one inspection apparatus. For example, a grain is used as a group of particles to be inspected, and defective grains, such as defective grains, stones, and glass, are separated from normal grains, which are normal, and selected. By the way, in the conventional granular material inspection apparatus, as shown in, for example, Japanese Patent Publication No. Sho 63-28674, both the primary sorting guide and the secondary sorting guide guide the powder and granular materials in a line in a row. A plurality of downspouts are arranged side by side in the horizontal direction, and a primary sorting storage unit for storing a primary sorting particulate group is configured with a storage tank for storing the inspection target particulate group. In addition, after the secondary sorting input section for inputting the secondary sorting powder and granular material group is sorted as defective in the primary sorting section, the powder and granular material lifted and transported by the bucket type transport device It consisted of a storage tank for storing groups. Further, in order to place and transport the primary sorting powder / granules falling from the primary storage tank to each downflow gutter for primary sorting, a vibratory primary sorting formed in a gutter shape corresponding to each downflow gutter. Carrier, and in order to place and transport the powder and granular material group for secondary sorting falling from the secondary storage tank to each downstream gutter for secondary sorting, in a gutter shape corresponding to each downstream gutter. The formed vibratory secondary sorting carrier is configured to be driven by a number of vibration driving devices provided one by one corresponding to two adjacent gutter-shaped sorting carriers. Each of the vibration driving devices is constituted by a so-called electromagnetic drive type vibration feeder.

[0003] In another conventional granular material inspection apparatus, for example, as shown in Japanese Patent Publication No. 46195/1994, both a primary sorting guide and a secondary sorting guide form a powder and granular material group. A storage tank configured with a flat guide surface that guides down while spreading in the horizontal direction, and a primary sorting storage unit that stores the primary sorting powder particles, stores the powder particles to be inspected. In addition to the above, the secondary sorting input section for feeding the secondary sorting powder and granular material group is sorted as defective by the primary sorting section, and then the powder lifted and transported by the transport device. It consisted of a cylindrical hopper into which a group of particles was put. Further, a vibratory primary sorting carrier for placing and transporting the primary sorting powder / granule group falling from the storage tank on the primary sorting guide, and a secondary sorting powder / granule falling from the hopper A vibratory secondary sorting transporter that mounts and transports the group on the secondary sorting guide is configured with a planar transporter, and a primary vibration driving device that drives the primary sorting transporter. And a secondary vibration drive device for driving the secondary sorting conveyance body. Each of the above-mentioned vibration driving devices is constituted by a so-called electromagnetic drive type vibration feeder.

[0004] The above-mentioned secondary sorting powder / granules are classified as defective in the primary sorting section, and the amount of the secondary sorting powder / granules is equal to the primary sorting powder / granules. In the former of the above-mentioned conventional granular material inspection device, the number of downspouts provided in the secondary sorting guide is less than the number of downspouts provided in the primary sorting guide, and In the latter, the width of the guide surface provided on the secondary sorting guide is formed smaller than the width of the guide surface provided on the primary sorting guide.

[0005]

In the former of the above-described conventional granular material inspection apparatus, in order to increase the amount of the granular material group to increase the processing capacity per unit time, it is necessary to provide each sorting guide with It is necessary to increase the number of down flow gutters provided, but if a large number of down flow gutters are juxtaposed, there is a problem that the width of the entire sorting unit becomes large and the inspection device becomes large, and the primary sorting transport and secondary Since a large number of vibration driving devices are provided to drive the sorting conveyance body, there is a problem that the device configuration becomes complicated and expensive. On the other hand, in the latter case of the conventional granular material inspection apparatus, since the primary sorting guide guides the granular material group in a state of spreading down the flat guide surface in the lateral direction, the granular material is guided down. While it is possible to increase the processing capacity per unit time by increasing the input amount of the body group,
Since the secondary sorting guide also guides the powder and granules to flow down in a state where it spreads on the flat guide surface in the horizontal direction, when the defective object and the normal object around it flow down In this method, it was not possible to accurately separate and sort a defective product from a normal product, and there was a possibility that the sorting accuracy of the secondary sorting unit was reduced. In addition, the number of vibration driving devices to be installed in this granular material inspection device is smaller than that of the former granular material inspection device, but the primary sorting carrier and the secondary sorting carrier are separately driven. However, two vibration driving devices are required, and the device configuration is still complicated and expensive.

The present invention has been made in view of the above circumstances, and has as its object to solve the above-mentioned disadvantages of the prior art while increasing the processing capacity per unit time while maintaining the processing efficiency in a secondary sorting unit. It is an object of the present invention to provide a powdery and granular material inspection apparatus which maintains the sorting accuracy at a high accuracy, and realizes a compact inspection apparatus and a low cost by simplifying the apparatus configuration.

[0007]

According to the first aspect of the present invention, a primary sorting unit that sorts a normal product and a defective product while moving a group of particles for primary sorting down along a primary sorting guide, And a secondary sorting unit that sorts the particles into a normal product and a defective product while moving down the powdery material group for the secondary selection that has been selected as a defective product in the primary sorting unit along the secondary sorting guide. Is provided in the common machine frame side by side in the horizontal direction, the primary sorting storage unit that stores the primary sorting powder and granular material group to be supplied to the primary sorting guide, and the secondary sorting guide The input section for secondary sorting, which inputs the powder and granular material group for secondary sorting to be supplied,
A granular material inspection device provided in the machine frame, wherein the primary sorting guide body includes a flat guide surface that guides the primary sorting granular material group in a wide single layer state. The secondary sorting guide body is configured to include a plurality of guide grooves arranged in the width direction for guiding the secondary sorting powder and granular material group in a state of being divided into a plurality of rows, and these are horizontally arranged. Vibration type primary sorting carrier for placing and transporting the primary sorting powder and granular material group from the primary sorting storage unit to the primary sorting guide, and the secondary sorting dosing unit The secondary sorting carrier of the vibration type for placing and transporting the powder and granular material group for secondary sorting from the secondary sorting guide body is provided so as to be driven by a common vibration driving device. .

That is, the primary sorting powder / granules supplied from the primary sorting storage unit for storing the primary sorting powder / granules to the vibrating primary sorting conveying body are shared by the common vibration driving device. The primary sorting guide, which is placed and conveyed by the primary sorting carrier driven by the above, is supplied to the primary sorting guide that is juxtaposed laterally with respect to the secondary sorting guide, and is supplied to the primary sorting guide. The group of particles for sorting is moved down while being guided by a flat guide surface provided on the primary sorting guide in a single layer with a wide width, and is sorted into normal and defective parts. further,
The secondary sorting is supplied from the secondary sorting input unit which supplies the powdery material group for the secondary sorting, which is sorted as defective in the primary sorting unit, onto the vibration type secondary sorting carrier. The granular material group is placed and conveyed by the above-mentioned secondary sorting carrier driven by the common vibration driving device, and supplied to the secondary sorting guides arranged side by side with the primary sorting guides. Then, the powder and granular material group for secondary sorting supplied to the secondary sorting guide,
While being guided in a state of being divided into a plurality of rows by a plurality of guide grooves provided in the secondary sorting guide body in the width direction, the secondary sorting guide body moves down and is sorted into a normal part and a defective part.

[0009] Therefore, in the primary sorting section, the primary and secondary particles are separated into normal and defective ones while being moved downward while spreading on the flat guide surface. In the case of increasing the input amount of the body group, it is possible to increase the processing capacity per unit time by processing the wide particle group in parallel, and to arrange a large number of downspouts in the primary sorting guide As described above, there is no problem that the width of the entire sorting unit is widened and the inspection device is enlarged, so that the inspection device can be configured to be compact, and in the secondary sorting unit, the granular material for secondary sorting is used. Since the group is divided into multiple rows in the width direction and separated down into normal and defective parts while moving down, it is ensured that the normal and defective parts of the granular material group that flows down in one row for each row In a state separated into
The sorting accuracy of the secondary sorting unit can be maintained at high accuracy.

[0010] Further, a vibratory primary sorting carrier for placing and transporting a primary sorting powder and granular material group supplied from the primary sorting storage unit on the primary sorting guide, and a secondary sorting feeding unit. And the vibration type secondary sorting carrier for placing and transporting the powder and granular material group for secondary sorting on the secondary sorting guide is driven by a common vibration driving device, so that the primary sorting The number of vibration driving devices to be installed is reduced as compared with the case where the vibration driving devices for driving the transporting body and the secondary sorting transporting body are separately provided, and the apparatus configuration is simplified. Therefore, in the configuration where the primary sorting unit and the secondary sorting unit are installed side by side in a common machine frame, the sorting accuracy of the secondary sorting unit is increased with high accuracy while increasing the processing capacity per unit time. Maintain and
Provided is a powdery and granular material inspection device that realizes a compact inspection device and a low cost by simplifying the device configuration.

According to a second aspect, in the first aspect, there is provided a transport amount changing means for changing a transport amount per unit time of the primary sorting powder and granular material group by the primary sorting transport body. . In other words, since the amount of the primary sorting granular material group transported to the primary sorting guide body by the primary sorting transport body per unit time can be changed, the primary sorting unit sorts by the granular material group. When the amount of defectives to be changed fluctuates, the transport amount per unit time of the primary sorting powder and granular material group is changed according to the change, and the secondary amount supplied to the secondary sorting unit is changed. The amount of the granular material group for sorting can be maintained at an amount capable of performing an appropriate secondary sorting process. In other words, in the granular material inspection apparatus of claim 2, in order to preferentially and appropriately perform the sorting process in the secondary sorting unit, the unit of the primary sorting granular material group supplied to the primary sorting unit The transport amount per hour is adjusted. Specifically, when the amount of defectives sorted by the primary sorting unit is large, by reducing the transport amount per unit time of the primary sorting powder and granular material group, the secondary sorting unit In order to avoid the problem that the amount of the powdered granular material group for the secondary sorting to be supplied becomes excessively large and causes clogging or the like, on the other hand, when the amount of defectives sorted in the primary sorting unit is small, By increasing the transport amount per unit time of the primary sorting particles, the amount of secondary sorting particles supplied to the secondary sorting unit becomes too small and the sorting efficiency decreases. Can be avoided.

Further, the transport amount changing means includes, for example, an adjusting plate for adjusting the cross-sectional area of the primary sorting powder and granular material group placed and transported on the primary sorting transport member, and a primary sorting powder and granular material. In order to adjust the transport resistance of the group, it is composed of a transport table or the like which is provided on the primary sorting transport body so as to be tiltable in the transport direction. Since it has the advantage of being inexpensive as compared to the above, it is better to provide the conveyance amount changing means including the adjustment plate and the conveyance table and the common vibration driving device, and it is preferable to provide the first selection conveyance body and the second selection conveyance body. The device configuration can be reduced in cost as compared with the case where two vibration driving devices are provided for driving. Therefore, in the granular material inspection apparatus according to the second aspect, the primary sorting carrier and the secondary sorting carrier are driven by the common vibration driving device to simplify the device configuration, but the amount of defectives mixed is reduced. The primary sorting process and the secondary sorting process can be appropriately performed by setting the powder / particle group having various characteristics such as different as an inspection target, and thus the powder / particle inspection apparatus according to claim 1 is specifically implemented. Suitable means are provided.

According to a third aspect of the present invention, in the second aspect, the secondary sorting carrier is configured such that the secondary sorting powder / granular material group has a transport amount per unit time determined by a driving force of the vibration driving device. And the vibration driving device is configured to control the primary and secondary sorting by the primary sorting carrier and the secondary and sorting granular material group by the secondary sorting carrier. The driving force is configured to be changeable so that both of the transport amounts can be changed together. That is, the transport amount per unit time of the secondary sorting powder and granular material group transported to the secondary sorting guide by the secondary sorting transport body is determined by the driving force of the vibration driving device. The driving force of the vibration drive device and the state of the drive force of the vibration drive device so that the transport amount of the powder and granular material group for use becomes the amount that can perform appropriate secondary sorting processing in the secondary sorting unit. so,
The transport amount of the primary sorting powder and granular material group can be adjusted by the transport amount changing means so that the primary sorting process can be performed appropriately.

Therefore, for example, when the conveyance force is different even when the driving force of the vibration driving device is the same due to the difference in the properties, mass, flow characteristics, and the like of the granular material to be inspected, the driving force of the vibration driving device is reduced. The transport amount of the primary sorting powder and granular material group is adjusted by the transport amount changing means while changing and adjusting so that the secondary sorting powder and granular material group is transported in an appropriate transport amount state. can do. Incidentally, regardless of the difference in the properties, mass, flow characteristics, etc. of the above-mentioned powder and granules, the vibration driving device is fixed in a state of a large driving force so that the powder can be conveyed with a sufficient margin, and is used for the primary sorting and the secondary sorting. It is possible to adopt a configuration in which the transport amount of each of the powder and granular material groups for the next sorting is adjusted by the above-described transport amount changing means. Drive energy is required, and there is a disadvantage that useless drive energy is consumed. Thus, according to the third aspect, the transport amount changing means is provided only for the primary sorting carrier, and is not provided for the secondary sorting carrier, while avoiding the disadvantage that unnecessary drive energy is consumed. By simplifying the configuration of the apparatus as much as possible, suitable means for concretely implementing the granular material inspection apparatus of claim 2 is provided.

According to a fourth aspect, in any one of the first to third aspects, the primary sorting section includes the primary sorting powder / granular material group flowing down from a lower end of the primary sorting guide. Illuminating means for illuminating an elongated primary-side detection point, and a plurality of light-receiving units for receiving illumination light from the illumination means transmitted through the primary-side detection point, to the primary-side detection point A line sensor for transmitted light arranged side by side along the longitudinal direction, and a plurality of light receiving units for receiving the reflected light reflected by the primary side detection point where the illumination light from the illuminating unit is located at the primary side detection point. It is provided with a line sensor for reflected light juxtaposed along the longitudinal direction, and is configured to separate and sort a defective object determined based on light reception information of both line sensors from a normal object, and the secondary sorting Part is the lower end of the secondary sorting guide Illuminating means for illuminating a long secondary-side detection point where the presence of the secondary sorting powder and granular material group flowing down from is illuminated, and illumination light from the illuminating means passes through the secondary-side detection point A transmission light line sensor in which a plurality of light receiving units for receiving the transmitted light are arranged side by side along the longitudinal direction of the secondary-side detection point, and illumination light from the illuminating means is emitted at the secondary-side detection point. It is provided with a reflected light line sensor in which a plurality of light receiving portions for receiving the reflected light are juxtaposed along the longitudinal direction of the secondary side detection point, and a defect determined based on light receiving information of both line sensors. The object is configured to be separated from the normal object and sorted.

Therefore, in each of the primary sorting unit and the secondary sorting unit, a failure is determined based on both the light detection information of the transmitted light that has passed through the granular material group to be sorted and the reflected light that has been reflected by the granular material group. Since the object is discriminated and separated from the normal object by the defective object, the presence or absence of the defective object in the powder and granule group is compared with, for example, the case where the defective object is judged only by the transmitted light or only by the reflected light. More accurate determination can be made. For example, in the case where the granular material group to be sorted is a rice grain group, if a defective is determined only by reflected light, the white stone or plastic having a light reflectance similar to that of the rice grain is appropriately identified as a defective. In addition, when a defective product is determined only by transmission, it is possible to appropriately avoid a problem that a defective product cannot be appropriately determined for colored glass or the like having a light transmittance similar to that of rice grains. Suitable means for implementing the granular material group inspection apparatus according to any one of (1) to (3) is provided.

According to a fifth aspect, in any one of the first to fourth aspects, the secondary sorting powder / granules selected as defective in the primary sorting section are charged for the secondary sorting. A secondary transporting device that lifts and transports to the section, and the primary sorting storage for reducing the particulates sorted as normal in the secondary sorting section as the primary sorting powders. A primary transfer device that lifts and transfers the sheet to a section is provided on one lateral side of the machine frame. Therefore, the powder and granular material group for secondary sorting, which is sorted as defective in the primary sorting section, is lifted and transported to the secondary sorting input section by the secondary transporting device, and as a normal product in the secondary sorting section. Since the sorted powder and granular material group is lifted and transported to the primary sorting storage unit by the primary transport device and reduced as the primary and sorting powder and granular material group, the primary and secondary transport devices are not provided. As compared with a method in which lifting and conveying are performed manually, it is possible to appropriately supply a sorting powder and granular material group to each sorting unit while reducing the work labor of an operator. In addition, since the primary and secondary transfer devices are provided on one side of the machine frame, for example, compared to the case where the primary and secondary transfer devices are provided on both sides of the machine frame. In addition, by arranging the two transport devices in a concentrated manner, the width of the inspection device can be reduced to be compact, and the inspection of each transport device can be easily performed. Thus, according to claim 5, a transport device for transporting the granular material group to be sorted between the primary sorting unit and the secondary sorting unit is provided, and the automatic implementation of the granular material group inspection device is realized. In addition, it is possible to realize a compact device and easy inspection.
Suitable means for implementing the granular material inspection apparatus according to Item 4 is provided.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] Hereinafter, a first embodiment of a granular material inspection apparatus according to the present invention will be described in which a primary particle sorting process is performed using a group of rice grains such as brown rice or polished rice as a group of granular materials to be inspected. The case where the secondary sorting process is performed will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a granular material inspection apparatus. The granular material inspection apparatus includes a sorting apparatus A that sorts a group of rice grains into normal and defective ones while moving the group of rice grains downward, and a group of sorted rice grains. And a lifting / lowering transport device B for lifting / lowering transport. The sorting device A is configured to be entirely covered with a cover, but FIG. 1 shows a front view in a state where the entire front cover is removed.

In the sorting apparatus A, a primary sorting unit S1 for sorting the primary sorting rice grains into normal and defective ones while moving down the rice grain group along the primary shooter 1A as a primary sorting guide. While the rice grains for secondary sorting selected as defective in the primary sorting section S1 are moved down along the secondary shooter 1B as the secondary sorting guide,
A secondary sorting unit S2 that sorts a normal product and a defective product is provided side by side in a common machine frame F. In the figure,
The form which arrange | positioned the primary sorting part S1 on the left side and the secondary sorting part S2 on the right side is shown. The sorting device A further includes a storage tank 7 serving as a primary sorting storage unit for storing the primary sorting rice grains to be supplied to the primary sorting guide 1A,
Further, the machine frame F is provided with a rectangular tubular hopper 20 as a secondary sorting input unit for inputting a secondary sorting rice grain group to be supplied to the secondary sorting guide 1B. A vibrating primary sorting carrier 9 for placing and transporting the primary sorting rice grains from the tank 7 to the primary shooter 1A.
A, and a vibratory secondary sorting transport body 9B for placing and transporting the secondary sorting rice grains from the hopper 20 to the secondary shooter 1B are provided (FIGS. 3 to 4). FIG.
To FIG. 9).

As shown in FIG. 2, the lifting / lowering apparatus B has a secondary sorting unit for lifting and transporting the secondary sorting rice grains selected as defective in the primary sorting unit S1 to the hopper 20. A transport device B2 and a primary transport device B1 that lifts and transports to the storage tank 7 the rice grains that have been selected as normal in the secondary sorting section S2 to reduce them as the primary sorting rice grains. A group of rice grains provided on one lateral side (right side in FIG. 1) of the machine frame F and lifted and conveyed by the secondary conveying device B2 is guided by the guide tube 32, thrown into the hopper 20, and The group of rice grains lifted and transported by the transporting device B1 is guided by the guide cylinder 33 and is charged into the storage tank 7. The figure shows a mode in which the primary transport device B1 is disposed on the front side and the secondary transport device B2 is disposed on the rear side, and both transport devices B1 and B2 are arranged in the front-rear direction. And, in this way, the primary transfer device B
Since the first and second transfer devices B2 are arranged in the front-rear direction on one lateral side of the machine frame F, for example, the two transfer devices B1, B2
As compared to the case where are arranged side by side on one side of the machine frame, the width of the inspection device can be made smaller to achieve further compactness, and each transport device can be easily inspected. Can be. Although not described in detail, each of the transport devices B
Reference numerals 1 and 2 denote endless rotating bodies that are wound and driven to rotate in the vertical direction, a plurality of buckets 35 that move integrally with the endless rotating bodies, and that rotate the endless rotating bodies. Primary transport motor M1 and secondary transport motor M2
The bucket 35 is configured to hold the rice grain group and carry it up and down.

The structure of the sorting device A will be specifically described. 3 to 6 (FIG. 3 is a vertical sectional side view at the position of the primary sorting unit S1, FIG. 4 is a vertical sectional side view at the position of the secondary sorting unit S2, and FIG. 6 is a primary sorting process and a secondary sorting process. As shown in the operation principle diagram of the sorting process), the primary shooter 1A and the secondary shooter 1B are installed at a predetermined angle (for example, 60 degrees) with respect to a horizontal plane. The primary shooter 1A is configured to have a flat guiding surface ha for guiding the primary sorting rice grain group k in a wide single layer state, and the secondary chute 1B is configured to have the secondary sorting rice grain group k. Are arranged in the width direction so as to be guided in a state of being divided into a plurality of rows, and they are juxtaposed in the lateral direction. Each guide groove a
m has a semicircular cross section. And, because of the semi-circular cross section, for example, compared to a groove having a V-shaped cross section,
The flowing resistance is reduced, and there is an effect of flowing smoothly.

As shown in FIGS. 10 and 11 (FIG. 11 is a sectional view taken along the line AA in FIG. 10), the primary shooter 1A and the secondary shooter 1B are connected to a horizontal frame F described later.
6 are integrally assembled as a plate-shaped shooter 1 by a mounting plate 1C and a reinforcing member 1D. Further, on the upper part of the shooter 1, the primary sorting carrier 9A is provided.
And a mounting plate 3 on which receiving members 29A and 29B for receiving the rice grain group k supplied from the secondary sorting conveyance body 9B are mounted.
7 is fixed. The receiving members 29A, 29B
As shown in FIG. 7 and FIG. 8, a rectangular cylindrical body that tapers toward the lower side in a side view is formed in a shape having an open rear side.

The storage tank 7 is arranged above the primary shooter 1A, and the hopper 20 is arranged above the secondary shooter 1B. The storage tank 7 is supplied with a group of rice grains to be inspected from an external rice mill or the like, and a group of rice grains selected as normal in the secondary sorting unit S2, and is stored therein. The group of rice grains selected as defective in the section S1 is supplied. still,
The storage tank 7 is formed in a tapered cylindrical shape toward the lower end.

The primary sorting section S1 and the secondary sorting section S2
Determines the presence or absence of defective rice, such as defective rice in the rice grain group k or foreign matter mixed in the rice grain group k, based on the light reception information of the reflected light or transmitted light. Based on the discrimination result, a normal product and a defective product are separated into different paths and selected. Hereinafter, the structure of the above-described defective discrimination and separation will be described.

The primary sorting section S1 is provided with the primary sorting rice grain group k flowing down from the lower end of the primary shooter 1A.
Illuminating means 4A and 4B for illuminating a long primary-side detection point J1 expected to be present, and a plurality of illumination lights from the illuminating means 4A and 4B receiving transmitted light transmitted through the primary-side detection point J1. Pieces of the light receiving sections 5a are connected to the primary side detection points J1.
Transmitted light line sensors 5 juxtaposed along the longitudinal direction of
A, and a plurality of light receiving portions 5a for receiving the reflected light of the illumination light from the illumination means 4A and 4B at the primary detection point J1 are juxtaposed along the longitudinal direction of the primary detection point J1. The line sensor for reflected light 5B is provided so that a defective object determined based on the light receiving information of the two line sensors 5A and 5B is separated and separated from a normal object, and the secondary sorting unit S2 Illuminating means 4A and 4B for illuminating an elongated secondary-side detection point J2 where the secondary sorting rice grain group k flowing down from the lower end of the secondary shooter 1B is expected to be present; A line for transmitted light in which a plurality of light receiving portions 5a for receiving the transmitted light having the illumination light from 4A and 4B transmitted through the secondary detection point J2 are juxtaposed along the longitudinal direction of the secondary detection point J2. Sensor 5A and the illumination means 4 , 4B, a plurality of light receiving portions 5a for receiving reflected light reflected at the secondary detection point J2 are arranged side by side along the longitudinal direction of the secondary detection point J2. 5B is provided so that a defective object determined based on the light receiving information of the two line sensors 5A and 5B is separated from a normal object and selected.

The primary detection point J1 and the secondary detection point J2 are set so as to be linearly arranged in the width direction. The illuminating means 4A and 4B are constituted by linear light sources 4A and 4B, such as fluorescent lamps, which illuminate the entire width of the primary side detection point J1 and the secondary side detection point J2 in the width direction. Each of the transmitted light line sensor 5A and the reflected light line sensor 5B is configured such that the entire width of the primary side detection point J1 and the secondary side detection point J2 in the width direction is a detection range, and Light source 4A, 4B
The line sensors 5A and 5B are shared by the primary sorting unit S1 and the secondary sorting unit S2.

The line light sources 4A and 4B are provided with two line light sources 4A and 4B for illuminating the rice grain group k from a plurality of different oblique directions while being inclined with respect to the light receiving directions of the line sensors 5A and 5B. And the primary side detection point J
The lower light source 4A and the upper light source 4B that illuminate the first and secondary side detection points J2 from obliquely below.
The two light sources 4A and 4B are held by the frame 22 while maintaining the respective illumination angles. Since the primary and secondary detection points J1 and J2 are illuminated by changing the illumination angle of the illumination light in this manner, even if the rice grain k is shifted from the normal position in the horizontal direction, the rice is minimized. The illumination can be satisfactorily performed in a uniform state.

Each of the two line sensors 5A and 5B is
As shown in FIG. 14, as the plurality of light receiving units 5a,
A monochrome type CCD sensor 50 in which a plurality of light receiving elements 5a having a range p smaller than the size of the rice grain k (for example, about one tenth of the size of the rice grain k) as a light receiving range is linearly juxtaposed. And an optical system 51 for forming an image of the rice grain group k at the primary detection point J1 and the secondary detection point J2 on each light receiving element 5a of the CCD sensor. In each of the line sensors 5A and 5B, for example, in FIG. 6, each light reception information is sequentially taken out from each light receiving section 5a from one end of the primary detection point J1 and the secondary detection point J2 to the other end. It is configured to be.

A line sensor 5A for transmitted light and a normal substance in the rice grain group k are located on the opposite side of the positions of the linear light sources 4A and 4B with respect to the primary detection point J1 and the secondary detection point J2. A reflection plate 8B for reflected light which reflects light having the same or substantially the same brightness as the reflected light from the normal rice toward the reflected light line sensor 5B is provided, and the transmitted light line sensor 5A and the reflected light reflection are provided. The plate 8B is stored in the storage room 13A. On the other hand, on the same side as the installation position of the linear light sources 4A and 4B, the reflected light line sensor 5B and light having the same or substantially the same brightness as the transmitted light from a normal object (normal rice) in the rice grain group k are applied. A transmitted light reflecting plate 8A that reflects toward the transmitted light line sensor 5A is provided, and the reflected light line sensor 5B and the transmitted light reflecting plate 8A are
3B. In addition, the reflection plate for transmission 8A
Is a plate 2 connected to the frame 22 for supporting the light source.
It consists of a white plate formed by bending 2a and making its surface white by printing or the like.

The two storage chambers 13A and 13B are formed as a unitary box having a common side plate, and each of the two storage chambers 13A and 13B is located on the side facing the primary detection point J1 and the secondary detection point J2. Window member 14A made of plate-shaped transparent glass,
14B. Here, the two window members 14A, 1
4B are arranged in a V-shape in which the interval between them becomes smaller toward the lower side. Although not shown, a cleaning nozzle 26 is provided for blowing air on the surfaces of both windows 14A and 14B in a longitudinal direction (perpendicular to the plane of FIG. 5) to remove dust and the like adhering to the surfaces of the windows. (See FIG. 13).

The reflection plate 8B for reflected light forms a region h1 having the same reflectance as that of the rice grains in a longitudinal shape corresponding to the entire width of the rice grain group k illuminated by the linear light sources 4A and 4B. The window 14A is formed as a coating by printing or the like on the inner surface of the window portion 14A so as to form black regions h2 on both sides of the elongated region h1. The transmitted light reflecting plate 8A and the transmitting reflecting plate 8A are illuminated by the linear light sources 4A and 4B.

Downstream from the primary detection point J1 and the secondary detection point J2 in the downstream direction, the primary detection point J1
And air to defective rice such as colored rice and broken rice and foreign matter such as stone and glass fragments (hereinafter referred to as defective g) determined to be defective based on the received light information at the secondary side detection point J2. An air blowing device 6 is provided for blowing and separating the rice grains k in the horizontal direction from the normal flow direction. The air blowing device 6 is provided with an injection nozzle 6 for blowing air to a defective product to separate the defective product into a path different from a normal product.
A plurality of “a” are juxtaposed in such a manner that the whole width of the rice grain group k is divided into a plurality of sections with a predetermined width and divided into a plurality of sections. FIG. 6 shows a mode in which eleven injection nozzles 6a corresponding to the primary selection part S1 and eight injection nozzles 6a corresponding to the secondary selection part S2 are provided.
Then, the injection nozzle 6a in the section where the defective object determined by the control device 10 described later is present is operated.

The primary sorting section S1 collects the rice grains k which have progressed without being blown by the jet nozzle 6a from the primary sorting rice grain group k, and forwards them toward the front of the apparatus. A receiving portion 2A for good rice having a chute portion for guiding down flow, a normal rice grain k in the primary sorting rice grain group k by being blown with air.
And a defective receiving port 2B provided with a chute portion for guiding the downward flow toward the entrance portion of the secondary transfer device B1 while recovering the defective material g laterally separated from the flow. The rice receiving port 2A is formed in a tubular shape elongated in the width direction, and surrounds the periphery of the good rice receiving port 2A.
A receiving portion 2B for a defective is formed. Note that the rice grains k collected at the good rice receiving portion 2A are discharged to the outside through an outlet 2C provided at a lower portion of the front surface of the apparatus and collected.

In the secondary sorting section S2, similarly,
Among the secondary sorting rice grain group k, the rice grain k which proceeds as it is without being blown by the air from the injection nozzle 6a is collected, and the rice grain k is guided downward toward the inlet of the primary transfer device B2. A receiving portion 3A for good rice having a chute portion to be blown, and among the rice kernels k for secondary sorting, air is blown to collect a defective g which is laterally separated from a flow of normal rice kernels k. In addition, a receiving portion 3B for defectives provided with a chute portion for guiding the water flowing outward is provided, and a receiving portion 3A for good rice is formed in a tubular shape elongated in the width direction. A defective rice receiving portion 3B is formed so as to surround the periphery of the receiving portion 3A. Note that the rice grains k collected at the defective product receiving portion 3B are discharged to the outside through a discharge port 3C (see FIG. 2) provided at a lower portion on the right side of the apparatus.

Next, the structure and driving means of the primary sorting carrier 9A and the secondary sorting carrier 9B will be described. As shown in FIGS. 7 to 9 (FIG. 7 is a vertical sectional side view at the position of the secondary sorting transfer body 9B, and FIG. 8 is a vertical sectional side view at the position of the primary sorting transfer body 9A). The primary sorting transport body 9A and the secondary sorting transport body 9B are each formed in a box shape having a bottom plate 91, left and right side plates 92, and a back side plate 93, with the front and upper sides being open. , And is configured to place and hold the rice grain group k falling from the storage tank 7 and the hopper 20. And it is arranged at intervals in the front-rear direction and
A pair of vertical plates 23 in the shape of a letter and a pair of vertical plates 24 in the shape of a letter L in a side view, which are arranged at intervals in the left-right direction, are coupled in a grid in plan view. 24, the above-mentioned box-shaped primary sorting carrier 9A and secondary sorting carrier 9B
Are held, and the lattice-shaped vertical plates 23 and 24 are fixed to a vibration table 18 a provided in the vibration feeder 18.

At a discharge port 7A of the storage tank 7, a member having a shape connecting the left and right side plates 7B is screwed at a connecting portion 7B1, and a group of rice grains k dropped on the primary sorting conveying body 9A is rebounded. A rubber plate 29a that covers the back side and a rubber plate 29b that covers the front side are provided in order to prevent scattering. The back side rubber plate 29a is
The upper part is tightened and fixed at B1, and the rubber plate 29 on the front side is fixed.
The upper part b is fixedly fastened by an adjusting plate 25 described later. When the rice grain group k is conveyed, the rubber plate 29b on the front side is pushed by the rice grain group k as shown in FIG. Similarly, a member having a shape connecting the left and right side plates 20B is screwed to the discharge port 20A of the hopper 20 at the connecting portion 20B1, and the rice grain group k dropped on the secondary sorting carrier 9B. A rubber plate 30a covering the back side and a rubber plate 30b covering the front side are additionally provided to prevent splashing and scattering, and the upper part of the rubber plate 30a on the back side is fixed by tightening the upper part by the connecting portion 20B1. The upper portion of the rubber plate 30b on the front side is fastened and fixed by the retaining plate 28. The rubber plate 3 on the front side
When the rice grain group k is conveyed, the lower side portion of 0b is pushed by the rice grain group k as shown in the figure, and is in a horizontal state toward the front side.

The vibration feeder 18 includes a vibration table 18a.
, A pair of leaf springs 18c that elastically hold the support member 18b at each of the front and rear portions, and a base portion 18 that supports the base ends of the pair of leaf springs 18c.
and an electromagnetic drive coil 18e for vibrating the support member 18b obliquely upward in the front-rear direction. The vibration feeder 18 is installed on a horizontal frame F5 constituting a machine frame F via four coil springs 27 provided at front, rear, left and right portions. Therefore, the primary sorting conveyance body 9A and the secondary sorting conveyance body 9B are driven by the vibration feeder 18 as a common vibration driving device.

When the drive amplitude of the vibration feeder 18 is changed,
The vibration amplitude of the primary sorting carrier 9A and the secondary sorting carrier 9B changes, and the transport speed of the rice grain group k placed and transported by each of the sorting transporters 9a and 9B changes. Then, the cross-sectional area (product of the layer thickness and the width) of the transported rice grain group k is multiplied by the transport speed of the rice grain group k that is placed and transported by the primary sorting transport body 9A and the secondary sorting transport body 9B. , The transport amount per unit time is determined.

The mechanism for setting the cross-sectional area of the primary sorting rice grains k to be mounted and transported by the primary sorting transporting body 9A will be described. The front side of the outlet 7A of the storage tank 7 is open. , Change the area of the opening,
The mounting position with respect to the storage tank 7 can be adjusted vertically by a long hole 25a so that the cross-sectional area when the rice grain group k dropped from the storage tank 7 onto the primary sorting transfer body 9A is placed and transported can be changed. An adjustment plate 25 is provided.
Therefore, the adjusting plate 25 is provided with a transport amount changing means HH for changing the transport amount per unit time of the primary sorting rice grain group by the primary sorting transport body 9A. On the other hand, the height of the discharge port 20A of the hopper 20 is fixed, and the cross-sectional area when the rice grain group k dropped from the hopper 20 onto the secondary sorting transport body 9B is transported cannot be changed. That is, the secondary sorting transport body 9B is configured to transport the secondary sorting rice grain group at a transport amount per unit time determined by the driving force of the vibrating feeder 18.

The mounting position of the adjusting plate 25 is adjusted by, for example, the mixing ratio of defectives in the rice grain group k to be inspected. That is, if there are many defectives mixed in the rice grain group k for the primary sorting, the amount of the rice grain group k supplied to the secondary sorting unit S1 increases, and the secondary sorting unit S2 can appropriately perform the sorting process. On the other hand, while the amount may exceed the appropriate amount, if the number of defectives mixed in the rice grain group k for the primary sorting is small, the amount of the rice grain group k supplied to the secondary sorting unit S2 is reduced, and the secondary sorting unit S2 There is a possibility that the amount of the rice grain group k to be subjected to the sorting process becomes too small and the sorting efficiency is reduced. Therefore, when inspecting the rice grain group k having a high mixing rate, the mounting position of the adjusting plate 25 is lowered. Conversely, when inspecting the rice grain group k having a low mixing rate, the mounting position of the adjusting plate 25 is changed. The height is adjusted so that the amount of the rice grain group k for secondary sorting becomes an appropriate amount. It should be noted that the secondary sorting unit S2 has an appropriate amount of the rice grain group k for secondary sorting.
The driving force of the vibrating feeder 18 is adjusted by a feeder voltage adjusting volume 39 (see FIG. 13) described later so that is supplied.

Next, the configuration of the granular material inspection apparatus will be described. As shown in FIG. 3, vertical frames F2, F3, which are erected on a bottom plate F1 provided with jack bolt type legs F0.
F4 is connected by horizontal frames F5, F6, F7, and F8 to form a machine frame F. An operation console 21 for displaying and inputting information is installed in the upper oblique portion of the front vertical frame F4, the vibration feeder 18 is installed on the horizontal frame F5, and the power supply box 17 and the The control box 16 mounted on the apparatus is guided and supported by a guide rail (not shown) as shown in FIG. 12, and is slidably installed on the rear side of the apparatus. The power box 17 can be inspected by swinging the rear part of the control box 16 upward while pulling the control box 16 backward. Also, the power supply box 17 and the control box 16
When the blowing fans 17a and 16a provided in the above are operated to blow air from the front side to the rear side, each of the sorting units S
A shielding plate 36 is provided upright on the bottom plate F1 in order to prevent dust such as rice bran or the like generated in Steps S1 and S2 from entering the power supply box 17 and the control box 16.

The power supply box 17 and the control box 1
An air supply device 15 provided with an air tank, a regulator, and the like is installed so as to protrude outward to the right of the device from the installation location of No. 6. It should be noted that pressurized air is supplied from the air supply device 15 to the air blowing device 6 and the cleaning nozzle 26. The box-shaped storage portions 13A and 13B are supported by a vertical frame F4 on the front side and a vertical frame F8 on the rear side, respectively.
The lower part 6 is supported by the storage part 13B.

A cover for covering the outer surface of the apparatus is attached to the machine frame F. Among the covers, a front upper cover 12A is configured to be openable and closable in the vertical direction, and a front lower cover 12B is configured to be detachable. , Rear side cover 12C
Are configured to be openable and closable in the left-right direction by hinges 38 (see FIG. 2) provided as a pair of upper and lower parts.
Inspection of the inside of the apparatus or the like is performed with B and 12C opened or removed.

Next, the control configuration will be described. FIG.
As shown in FIG.
0 is provided in the control device 10.
Each image signal from A and 5B and operation information from the console 21 are input. On the other hand, the control device 10 turns on / off the display drive signal for the console 21, the drive signal for the lighting circuit 19 for turning on the linear light sources 4 A and 4 B, and the air supply to the injection nozzles 6 a. A drive signal for the plurality of solenoid valves 11 to be driven, a drive signal for the vibration feeder 18, a drive signal for the solenoid valve 26A for turning on / off the air supply to the cleaning nozzle 26, and the primary transport motor M1.
And a drive signal for the secondary transport motor M2.

A feeder voltage adjusting volume 39 for adjusting the driving voltage of the vibration feeder 18 is provided, and adjustment information from the feeder voltage adjusting volume 39 is input to the control device 10. Therefore, by operating the feeder voltage adjusting volume 39 to change the drive amplitude of the vibrating feeder 18, the primary sorting carrier 9 is controlled.
A and the transport speed of the rice grain group k placed and transported by the secondary sorting transport body 9B are changed.
However, the driving force is changed so that both the transport amounts of the primary sorting rice grain group k by the primary sorting transport body 9A and the secondary sorting rice grain group k by the secondary sorting transport body 9B can be changed. It is freely configured. The adjustment volume 39 is, for example, a secondary sorting unit S2 in which the transport amount of the rice sorting group k for the secondary sorting is appropriate in the secondary sorting unit S2 for the inspection target rice grain group k having a standard defective rate. It is used to change and adjust the driving force of the vibration feeder 18 so that the amount can be processed. That is, the above-described standard inspection target rice grain group k is input as the primary sorting rice grain group k, and the adjustment volume 39 is operated while confirming the transport amount of the secondary sorting rice grain group k at that time. Then, the respective guide grooves am are adjusted so that each rice grain flows continuously at appropriate intervals.

The controller 10 constitutes a primary sorting section S1 and a secondary sorting section S2, and determines a defective object based on the received light information of the transmitted light line sensor 5A and the reflected light line sensor 5B. In addition, the discriminated defective product is separated from the normal product and sorted. That is, as shown in FIGS. 15 and 16, the control device 10
Based on the light receiving information of the transmitted light line sensor 5A that receives the transmitted light from each rice grain group k and the reflected light from the transmitted light reflecting plate 8A at the primary detection point J1 and the secondary detection point J2. If any of the brightness information from each of the light receiving elements 5a deviates from the appropriate brightness range ΔEt, the presence of a defective g in each of the rice grain groups k for the primary sorting and the secondary sorting is determined, and the primary sorting is performed. Based on the light receiving information of the reflected light line sensor 5B that receives the reflected light from each of the rice grain groups k and the reflected light from the reflected light reflecting plate 8B for the secondary and secondary sorting, a plurality of light receiving elements 5a are provided. If any of the brightness information is out of the appropriate brightness range ΔEh, the presence of a defective g in each of the rice grain groups k for the primary sorting and the secondary sorting is determined. Then, based on the defect determination information, the control device 10 controls, with the lapse of time, the time until the defective object is transferred from each of the detection points J1 and J2 to the air injection position by the injection nozzle 6a, Air is blown from each of the spray nozzles 6a in the section corresponding to the flowing down defective product to separate it from the path of normal rice grains.

Hereinafter, the defectives determined based on the light receiving information of the line sensors 5A and 5B for the transmitted light and the reflected light will be specifically described. In the case of transmitted light (Fig. 1
In 5), the appropriate lightness range ΔEt for transmitted light is set to a range of a predetermined upper and lower width across the output voltage level e0 for standard transmitted light from normal rice grains. If the output voltage corresponding to the amount of light received by the transmitted light line sensor 5A is smaller than the appropriate lightness range ΔEt, defective rice grains or foreign substances having a transmittance smaller than normal rice grains (for example, black stone grains) ) Is determined, and if it is larger than the appropriate lightness range ΔEt, the presence of the light-side defective rice grain k or the foreign matter having a transmittance higher than the normal rice grain k is determined. An example of the light-side foreign matter is a thin colored transparent glass piece.
In FIG. 15, the output voltage (light reception amount) of the light receiving unit 5 a is determined based on the position where a part of the rice grain k has a colored portion, the position of a black stone or the like (indicated by e 1), and the position where a cracked portion exists. (E
2), if there is a foreign substance or the like located below the appropriate lightness range ΔEt and having a transmittance higher than that of normal rice grains, as shown in the position e3, the proper lightness range ΔEt is exceeded. Also illustrates a state of being located on the upper side.

On the other hand, in the case of reflected light (FIG. 16), the appropriate lightness range ΔEh for reflected light is within a range of a predetermined width above and below the output voltage level e0 ′ for standard reflected light from normal rice grains. Is set. Then, the output voltage corresponding to the amount of light received by the reflected light line sensor 5B is adjusted to the appropriate lightness range ΔE.
h, the presence of defective rice grains, foreign matter, etc. (for example, black stone grains) having a reflectance lower than that of normal rice grains is determined. If the grain size is larger than the appropriate lightness range ΔEh, normal rice grains k The presence of a light-side defect having a higher transmittance than that of the light-side defect is determined. FIG. 16 shows a position (shown by e1 ') where a part of the rice grain k has a colored portion or a position (e1) where a cracked portion exists.
2 ′) illustrates a state deviating downward from the appropriate lightness range ΔEh, and when a foreign substance such as a glass piece exists, the position e3 ′ is strongly reflected by the foreign substance at the position e3 ′. As shown in the figure, a state where the lightness deviates upward from the appropriate lightness range ΔEh is illustrated. Although not shown, the reflectance of a black stone or the like is very small, so that the waveform deviates greatly from the appropriate light amount range ΔEh downward.

[Second Embodiment] Next, a second embodiment of the granular material inspection apparatus according to the present invention will be described with reference to FIG. In the second embodiment, the transport amount changing means HH is different from that of the first embodiment, but the other points are configured similarly to the first embodiment. In the second embodiment, as shown in the figure, a bottom plate front side portion 91a of a primary sorting carrier 9A 'formed in a box shape like the primary sorting carrier 9A is vertically moved with its rear end as a fulcrum. By swinging in the direction, the inclination in the front-back direction can be adjusted. still,
In the state where the inclination is adjusted, the bottom plate front side portion 91a is fixed with a stopper (not shown). That is, the bottom plate front side portion 9
If the inclination is adjusted so that 1a becomes higher toward the front, the transport resistance when placing and transporting the rice grain group k by the primary sorting transport body 9A 'increases, so that the primary sorting rice grains by the primary sorting transport body 9A'. If the transport amount per unit time of the group decreases, and conversely, if the inclination is adjusted so that the front portion 91a of the bottom plate becomes lower toward the front, the transport resistance of the rice grain group k decreases, and the transport amount increases. Accordingly, the transport amount changing means HH is constituted by the bottom plate front side portion 91a.

[Alternative Embodiment] In the first and second embodiments, the transport amount changing means HH is used to determine the cross-sectional area of the primary sorting powder particles placed and transported by the primary sorting transport body 9A. Although the adjusting plate 25 for adjustment and the bottom plate front portion 91a for adjusting the transport resistance of the primary sorting powder and granular material group placed and transported by the primary sorting transporting body 9A 'are configured, other means may be used. Good.

In the first and second embodiments, only the transport amount changing means HH for changing the transport amount of the primary sorting powder and granular material group placed and transported by the primary sorting transport body 9A is provided. Along with the primary transfer amount changing means HH, a transfer amount changing means for changing the transfer amount of the secondary sorting powder and granular material group placed and transferred by the secondary sorting transfer body 9B may be provided. .

In the above-described first and second embodiments, the secondary sorting dosing section into which the powder and granular material for secondary sorting is thrown in is constituted by the hopper 20 in the form of a rectangular tube. Like the storage unit for storage (storage tank 7), the input unit for secondary sorting is
For example, the storage portion may be configured as a small storage tank formed in a tapered cylindrical shape toward the lower end.

In the first and second embodiments, the primary sorting guide 1A and the secondary sorting guide 1B are configured to be assembled as an integral shooter 1. However, the primary sorting guide 1A and the secondary sorting guide 1B are not integrated. The body 1A and the secondary sorting guide 1B may be formed separately, and both may be arranged side by side. Further, the plurality of guide grooves am provided in the secondary sorting guide body 1B are formed in a semicircular shape, but may be formed in a V-shaped guide groove in addition to the semicircular shape.

In the above first and second embodiments, the primary sorting unit S1 and the secondary sorting unit S2 illuminate the powder and particles moving down, and the illumination light is transmitted through the powder and particles. And the presence / absence of a defective object is determined based on the received light information of the reflected light reflected by the granular material group. In addition, for example, only the received light information of the transmitted light or only the received light information of the reflected light is used. May be configured to determine the presence or absence of a defective object.

In the above-described first and second embodiments, the primary sorting unit S1 and the secondary sorting unit S2 are configured so that the defectives are separated from the normals by blowing air to the defectives. In addition to the air, for example, a defective product may be hit with a leaf spring and flipped to separate it.

In the first and second embodiments, the group of particles determined to be normal in the secondary sorting section S2 is returned to the primary sorting section S1 as a group of particles for primary sorting. Although configured, it may be discharged to the outside as non-defective products without being returned to the primary sorting unit S1.

In the first and second embodiments, the primary transport device B1 and the secondary transport device B2 are provided. However, without providing the primary transport device B1 and the secondary transport device B2, for example, A primary defective container for storing the secondary sorting powder and granular material group selected as defective in the primary sorting unit S1, and a secondary container for storing the powder and granular material group selected as normal in the secondary sorting unit S1 Each of the non-defective containers is provided, and the worker manually lifts and conveys the powder and granular material group stored in the primary defective container to the storage tank 7 serving as the primary sorting storage unit, and stores the powder and granular materials in the second non-defective container. Hopper 2 which is the input part for secondary sorting
0 may be manually lifted and conveyed.

In the first and second embodiments, the case where the group of powder and granules is a group of rice grains has been described as an example. However, the group of powder and granules is not limited to this. Applicable.

[Brief description of the drawings]

FIG. 1 is an overall front view of a granular material inspection apparatus.

FIG. 2 is an overall side view of the granular material inspection apparatus.

FIG. 3 is an overall side sectional view of the granular material inspection apparatus.

FIG. 4 is an overall side sectional view of the granular material inspection apparatus.

FIG. 5 is a side view of a main part of the granular material inspection apparatus.

FIG. 6 is a perspective view of a main part of the granular material inspection apparatus.

FIG. 7 is a side view of a main part of the granular material inspection apparatus.

FIG. 8 is a side view of a main part of the granular material inspection apparatus.

FIG. 9 is a front view of a main part of the granular material inspection apparatus.

FIG. 10 is a front view of a primary sorting guide and a secondary sorting guide.

FIG. 11 is a cross-sectional view of a primary sorting guide and a secondary sorting guide.

FIG. 12 is a side view for explaining the operation of the main part of the granular material inspection apparatus;

FIG. 13 is a block diagram of a control configuration.

FIG. 14 is a diagram showing a light receiving state of a line sensor.

FIG. 15 is an output waveform diagram of a transmitted light line sensor.

FIG. 16 is an output waveform diagram of a reflected light line sensor.

FIG. 17 is a side view showing a main part of the granular material inspection apparatus according to the second embodiment.

[Explanation of symbols]

 Reference Signs List 1A Primary sorting guide 1B Secondary sorting guide 4A, 4B Illumination means 5A Line sensor for transmitted light 5B Line sensor for reflected light 5a Light receiving section 7 Storage section for primary sorting 9A Carrier for primary sorting 9B Carrier for secondary sorting Reference Signs List 18 Vibration driving device 20 Secondary sorting input section am Guide groove B1 Primary transport device B2 Secondary transport device F Machine frame ha Guide surface HH Transport amount changing means J1 Primary detection point J2 Secondary detection point S1 Primary sorting Department S2 Secondary sorting department

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaki Fujikawa 64 Ishizu-Kitacho, Sakai-shi, Osaka F-term in Kubota Sakai Works (reference) 3F079 AC15 BA06 CA41 CA44 CB25 CB29 CB32 CB33 CB34 CB35 CB38 CC03 DA07 DA23 EA02

Claims (5)

[Claims] 1. A primary sorting section for sorting between a normal substance and a defective one while moving a group of particles for primary sorting down along a primary sorting guide, and as a defective in the primary sorting part. A secondary sorting unit that sorts the sorted particles into normal and defective products while moving the sorted particles for secondary sorting down along the secondary sorting guide is placed in the common machine frame in the horizontal direction. A primary sorting storage unit that is provided side by side and stores the primary sorting powder and granular material group to be supplied to the primary sorting guide, and a secondary sorting powder and granular material group to be supplied to the secondary sorting guide. Is a powder inspection apparatus equipped in the machine frame, wherein the primary sorting guide, the primary sorting powder particles in a wide layer state. The secondary sorting guide body is configured to have a flat guiding surface for guiding, and the secondary sorting A plurality of guide grooves for guiding the group in a state of being divided into a plurality of rows are arranged side by side in the width direction, and they are arranged side by side, and the primary sorting powder particles from the primary sorting storage unit are arranged. A vibratory primary sorting transporter that places and transports a body group on the primary sorting guide, and a powder and granular material group for secondary sorting from the secondary sorting input unit to the secondary sorting guide. A powdery and granular material inspection device provided such that a vibration-type secondary sorting transport body to be mounted and transported is driven by a common vibration drive device. 2. The granular material inspection apparatus according to claim 1, further comprising a transport amount changing unit configured to change a transport amount of the primary sorting granular material group per unit time by the primary sorting transport body. . 3. The secondary sorting transport body is configured to transport the secondary sorting powder and granules in a transport amount per unit time determined by a driving force of the vibration driving device, The drive device, so that both the primary and secondary sorting powder and granular material group by the primary sorting carrier and the secondary sorting powder and granular material group by the secondary sorting carrier can be changed both transport amount, 3. The apparatus for inspecting a granular material according to claim 2, wherein the driving force is changeable. 4. An illuminating means for illuminating an elongated primary-side detection portion where the primary sorting section is expected to have the primary sorting powder and granules flowing down from a lower end portion of the primary sorting guide. A line sensor for transmitted light, in which a plurality of light receiving units for receiving transmitted light having passed through the primary side detection point, the illumination light from the illuminating means are arranged side by side along the longitudinal direction of the primary side detection point, and A reflected light line sensor in which a plurality of light receiving portions for receiving reflected light reflected from the primary side detection point by the illumination light from the illuminating means are arranged side by side along the longitudinal direction of the primary side detection point, The secondary sorting unit is configured to separate and sort a defective product determined based on the light reception information of the two line sensors from a normal product, and the secondary sorting unit flows down from a lower end of the secondary sorting guide. There will be a powder group for the next sorting Illuminating means for illuminating a long secondary-side detection point, and a plurality of light-receiving units for receiving light transmitted from the illuminating means through the secondary-side detection point, the illumination means illuminating the secondary-side detection point Line sensors for transmitted light juxtaposed along the longitudinal direction of
A reflected light line sensor in which a plurality of light receiving portions for receiving reflected light from the illumination means reflected at the secondary detection point is arranged along the longitudinal direction of the secondary detection point. The granular material inspection apparatus according to any one of claims 1 to 3, wherein a defective product determined based on the light reception information of the two line sensors is separated from a normal product and selected. . 5. A secondary transport device for lifting and transporting a secondary sorting powder or granule group selected as defective in the primary sorting section to the secondary sorting input section, and the secondary sorting apparatus. A primary transport device that lifts and transports to the primary sorting storage unit in order to reduce the granular material group that has been selected as a normal product in the section as the primary sorting powder and granular material group, The granular material inspection apparatus according to any one of claims 1 to 4, wherein the apparatus is provided on one lateral side.