JP2006150177A - Particulate material color sorting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease an arrangement clearance in a specific horizontal direction f2 of an air jetting nozzle 16 corresponding to each of air flowing-in ports 18 as compared with the conventional one and to enhance correctness at air injection time from the air injection nozzle 16. <P>SOLUTION: In the particulate material color sorting machine, a large number of power stop valves 15 and a large number of air injection nozzles 16 for generating an air stream for blowing out the different color particulate material w1 at a specific dropping off position to a specific area are formed to a linear arrangement in a horizontal specific direction f2. The machine is provided with a nozzle assemblage 17 in which each of the air injection nozzles 16 is communicated with the separate air flowing-in ports 18 respectively; and a large number of ventilation pipes 19 in which each of the power stop valves 15 is communicated with the separate air flowing-in ports 18 respectively. The two adjacent air flowing-in ports 18, 18 are arranged so as to be deviated in a vertical direction and/or a forward/rearward direction in side view and each length of the ventilation pipes 19 is made to the approximately same length. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a color sorter that sorts granular materials such as grains by color, and is particularly characterized in that sorting and removal of different-colored granular materials can be performed accurately.

  A number of power stop valves that are temporarily opened in connection with the detection of the presence of the different color particulate matter, and a number for generating an air flow that blows the different color particulate matter that has reached a specific drop position to a specific area. Each of the air stop nozzles is formed in a linear arrangement in a specific horizontal direction and has an air inflow port independently communicated with each of the air injection nozzles, There is already a particulate color sorter equipped with a vent pipe communicating with the air inlet corresponding to the above (see Patent Document 1).

  In this type of color sorter, a large number of the air inlets that are independently communicated with the air injection nozzles are formed in a linear arrangement in a specific horizontal direction at the nozzle assembly location directly behind the air injection nozzles. In this case, since the air pipe is connected to each air inlet through a connector, the two air inlets adjacent in the horizontal specific direction cannot be brought closer than a certain level. Therefore, the arrangement interval in the horizontal specific direction of the air ejection nozzles corresponding to each of the air inflow ports cannot be made smaller than a certain level.

  The length of each of the vent pipes is not the same because it corresponds to the actual distance at the site, and as a result, when the stop valve is opened Therefore, the time delay until the air is jetted from the air jet nozzle communicated therewith is non-uniform.

JP-A-10-202206

  In the conventional color sorter, the arrangement interval of the air injection nozzles corresponding to each of the air inlets in the horizontal specific direction cannot be reduced more than a certain level, which improves the accuracy of sorting and removing the different-colored particulate matter by the air flow. It is a blocking factor.

  In addition, the time delay from the time when each power stop valve is opened to the time when air is jetted from the corresponding air jet nozzle is non-uniform, which reduces the accuracy of sorting and removing the colored particles by the air flow. It has become.

  The present invention has been developed mainly in view of such problems, that is, it is possible to make the arrangement interval in the specific horizontal direction of the air ejection nozzles corresponding to each of the air inlets smaller than in the past. It is another object of the present invention to provide a granular color sorter that can improve the accuracy at the start of air injection from the air ejection nozzle.

In order to achieve the above object, the present invention is as follows.
That is, the color sorter according to the first aspect of the present invention includes a plurality of power stop valves that are temporarily opened in connection with the detection of the presence of the different color particulate matter, A large number of air injection nozzles for generating an air flow for blowing the different-colored granular materials that have reached the drop position to a specific region are formed in a linear arrangement in a specific horizontal direction, and are individually communicated with each of the air injection nozzles. A granular material color sorter having a nozzle assembly having a large number of air inlets, and a large number of vent pipes communicating the air outlets of the respective power stop valves with different air inlets. The two air inlets adjacent in the horizontal specific direction are arranged so as to be displaced in the vertical direction and / or the front-rear direction in a side view, and the lengths of the vent pipes are substantially the same. is there.

  According to a second aspect of the present invention, a color sorter includes a plurality of power stop valves that are temporarily opened in connection with the detection of the presence of different color particulate matter, and a specific drop position. A large number of air injection nozzles for generating an air flow for blowing the different-colored granular materials reaching a specific area are formed in a linear arrangement in a horizontal specific direction, and are individually communicated with the air injection nozzles. In a granular color sorter comprising a nozzle assembly having a large number of air inlets and a large number of vent pipes each communicating the air outlet of each of the power stop valves to the different air inlets, The internal volume in the air passage from each air outlet of the power stop valve to the air injection nozzle communicated with the air outlet is made substantially the same.

Each of the above inventions should be embodied as follows.
That is, as described in claim 3, each of the communication holes communicating each of the air injection nozzles with the corresponding air inlet has a substantially same length.

  Further, as described in claim 4, the nozzle assembly includes a front surface portion, an upper surface portion, a lower surface portion and a back surface portion, an inclined surface portion connecting the lower surface portion and the back surface portion, and A large number of the air injection nozzles are formed in a straight line arrangement in the left-right direction on the upper part of the front part, and any of the lower part part, the rear part part, and the inclined part on the front-rear vertical surface including each of these air injection nozzles The air inlet that is in communication with the air injection nozzle on the longitudinal surface including the specific part is formed at the specific part that is the one part, and the air inlets that are adjacent in the left-right direction are formed at this time. Is formed at two different locations of the lower surface portion, the back surface portion, or the inclined surface portion.

According to the present invention described above, the following effects can be obtained.
That is, according to the first aspect of the present invention, the adjacent ones in the horizontal specific direction among the multiple air inlets of the nozzle assembly are positioned so as to be displaced in the vertical direction and / or the front-rear direction in a side view. The arrangement interval in the horizontal specific direction of the air ejection nozzles corresponding to each of the air inlets can be made smaller than before, and therefore, the different color granular materials can be accurately blown to the specific area to improve the sorting accuracy. .

  In addition, since the length of the vent pipe is the same, if the size of each air injection nozzle of the nozzle assembly and the vent hole communicated therewith is the same, it is connected to this from the outlet of each stop valve. The internal volume of the air passage leading to the connected air injection nozzle is the same, and the time delay from when each power stop valve is opened until the air is injected from the connected air injection nozzle is uniform. Therefore, the control of the air injection start time of each air injection nozzle can be performed relatively easily and with high accuracy.

  According to the second aspect of the present invention, the same effect as that of the first aspect of the present invention can be obtained even if the dimensions of the air injection nozzles of the nozzle assembly and the vent holes connected to the nozzles are not the same. Can be obtained.

  According to the third aspect of the present invention, by making the dimensions of the air injection nozzles and the communication holes of the nozzle assembly the same, from the outlet of each stop valve to the air injection nozzle communicated therewith. The internal volume of the air passage can be made the same, and the same effect as that of the invention according to claim 1 or 2 can be obtained.

  According to the fourth aspect of the present invention, the same effect as that of the first, second or third aspect of the invention can be obtained, and the following effect can be obtained, that is, each air flow of the nozzle assembly. It is possible to reduce the arrangement interval in the horizontal specific direction of the air injection nozzle communicated with the inlet without being restricted by the size of the connection device for connecting the air pipe, and each of the communication holes communicated with each air injection nozzle. Can be realized in a relatively simple manner.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an outline of a particulate color sorter according to a first embodiment of the present invention, FIG. 2 is a rear view showing a nozzle assembly, a power stop valve, a vent pipe and the like in the sorter, and FIG. FIG. 4 is a partial rear view of the nozzle assembly, and FIG. 5 is a view of a vent hole and an air inlet on a longitudinal surface including an air injection nozzle in the sorter. FIG. 6 is a view showing three different types of arrangement states, A, B, and C, and FIG. 6 is a view of the flow trap, the air injection nozzle, and the different color granular material in the sorting machine as viewed from the front.

  As shown in FIG. 1, the color sorter according to the present invention removes different-colored granular materials w1 such as pebbles, metal pieces, glass pieces or defective quality granular materials mixed in granular materials w such as grains. Therefore, the sorting unit 100 is formed on the body frame, and a raw material tank 101, a non-defective product tank 102, and a defective product tank 103 are provided at appropriate locations.

  The sorting unit 100 includes a feeder 1 that quantitatively feeds the granular material w, a flowing-down basket 2 that is supplied with the granular material w from the feeder 1, and a different-colored granular material w1 from the granular material w group that has dropped from the flowing-down basket 2. An optical sorting means 3 for sorting and removing, and a sorting and collecting unit 4 including a non-defective product storage unit 4a and a defective product storage unit 4b are provided.

  The feeder 1 includes a hopper 5 that is fixed to the body frame and accommodates the granular material w, a trough 6 that is disposed under the hopper 5 and supports the granular material w on the upper surface, and an electromagnetic driving means 7 that vibrates the trough 6. At this time, the trough 6 changes the amplitude and period of vibration applied from the electromagnetic driving means 7 to change the carrying force generated by itself, and the electromagnetic driving means 7 is the optical sorting means 3. The flow rate control device 8 automatically controls the amplitude and period of vibration generated from its own output unit so that a good sorting accuracy can be obtained.

  The flow-down rod 2 is formed with a groove forming a straight flow-down guide surface 2a on the upper surface and is supported in an inclined manner by the machine body frame, and the flow-down guide surface 2a guides the granular material w supplied to the guide start end thereof. It is supposed to be dropped so as to fly downward from the lower end of the.

  The optical sorting unit 3 includes a different color particle presence detecting unit 9 and an external force applying unit 10. The different-colored particle presence detecting means 9 is a sorting element in which the area sensor 11 is arranged at one of the opposed positions sandwiching the normal movement locus a1 of the granular material w flying from the flow-down guide surface 2a and falling, and the background surface body 12 is arranged on the other side. Two or more sets are provided, and an illumination lamp 13 is provided on both the background plane 12 side and the area sensor 11 side, and the area sensors 11 and 11 monitor changes in the color of the granular material w flying on the normal movement locus a1. When the change exceeds a certain level, the light quantity comparing means 9a recognizes the granular material w to be monitored as a different color granular material w1 and issues a detection signal.

  The external force applying means 10 includes a valve control device 14, a large number of power stop valves (electromagnetic valves) 15 that are coupled and controlled to open and close, and a flat rectangular shape corresponding to each of the electromagnetic valves 15 as shown in FIG. A plurality of air injection nozzles 16 arranged in a straight line in the horizontal left-right direction f2 (width direction of the flow-down guide surface 2a), and nozzle sets corresponding to the outlets of the respective electromagnetic valves 15 A flexible resin vent pipe 19 that communicates with an air inlet 18 of the body 17, a compressed air supply line 20 for supplying compressed air to each electromagnetic valve 15, and a compressed air supply line 20. The air storage tank 21 is provided.

  As shown in FIGS. 3 and 4, the nozzle assembly 17 includes a front surface portion 17a, an upper surface portion 17b, a lower surface portion 17c and a back surface portion 17d, and an inclined surface portion 17e connecting the lower surface portion 17c and the back surface portion 17d. It is made into the rod-shaped body long in the left-right direction f2. A large number of air injection nozzles 16 are formed at two positions f2 in the left-right direction above the front surface portion 17a. As shown in A, B, and C in FIG. On the b1, b2, b3, a front side air hole 22a extending obliquely downward from the air injection nozzle 16 on the vertical surfaces b1, b2, b3 is formed. An air inflow port 18 is formed at a specific location on each of the longitudinal surfaces b1, b2, b3 in the front-rear direction and any one of the lower surface portion 17c, the back surface portion 17d, and the inclined surface portion 17e. Of these air inlets 18, the air inlets 18, 18 on the two longitudinally adjacent vertical surfaces b 1, b 2, b 3 adjacent in the left-right direction are of the lower surface portion 17 c, the back surface portion 17 d, and the inclined surface portion 17 e. It is formed in a relative arrangement located at two different places. The air inlet 18 and the rear end p1 of the front side vent hole 22a in each longitudinal longitudinal surface b1, b2, b3 are communicated with each other through the straight source side vent hole 22b, and thus the front side vent hole 22a communicated in this way. The lengths and diameters of the respective air holes 22 including the original air holes 22b are the same.

  In the illustrated example, the air inlet 18 and the vent hole 22 have a relative arrangement in which the arrangement order of the front-rear vertical surface indicated by reference sign b1, the front-rear vertical face indicated by reference sign b2, and the front-rear vertical face indicated by reference sign b3 is repeated. However, it is not limited to this. In addition, the air inlet 18 is communicated with the rear ends of the three original air holes 22b having different inclination directions when the nozzle assembly 17 is viewed from the side, but is not limited thereto. When the nozzle assembly 17 is viewed from the side, four or more original side vent holes 22 having different inclination directions are formed, and may be communicated with the respective rear ends of the original side vent holes 22. Also in this case, each of the air holes 22 has the same length and diameter.

  The lengths and diameters of the respective air pipes 19 are also the same, and the lengths and inner volumes of the air passages from the air outlets of the electromagnetic valves 15 to the air injection nozzles 16 communicated therewith are the same. Are the same.

  Further, the valve control device 14 counts the elapsed time from the time when the different color particle presence detection means 9 detects one or more different color particles w1 until the specific adjustment time described later elapses for each different color particle w1, When the specific adjustment time has elapsed, a valve opening current for opening the electromagnetic valve 15 corresponding to the position where each of the different color granular materials w1 related to the detection is opened is generated.

  Here, the specific adjustment time is specified in advance as an elapsed time from the time when the different color particle presence detection means 9 detects the presence of the different color granular material w1 to the time when the different color granular material w1 falls to the specific drop position d1. This is the time obtained by subtracting the air flow arrival delay time, which will be described later, from the granular material arrival delay time. At this time, the granular material arrival delay time was experimentally obtained for a group of granular materials w as objects to be processed. It may be an average time, or may be a time unique to each granular material w obtained predictively for each corresponding different colored granular material w1 from the falling speed of each actually detected different colored granular material w1. May be. The air flow arrival delay time is the time when a valve opening current for opening the solenoid valve 15 is issued from the valve control device 14, and the compressed air is discharged from the solenoid valve 15 opened by the valve opening current. 16 is an elapsed time from when the air flow is supplied to the injection nozzle 16 and the air flow generated by the injection reaches the specific drop position d1.

  As a result of the current being generated from the valve control device 14 as described above, the electromagnetic valve 15 corresponding to the different color granular material w1 detected by the different color particle presence detecting means 9 is opened, and corresponding to the opening operation. When compressed air is ejected from the air ejection nozzle 16 at the position, and the air flow generated by the ejection has passed the time when the particulate matter arrival delay time has elapsed from the time when the particular colored particle presence detection means 9 detects the specific colored particle w1. Furthermore, the specific drop position d1 on the normal movement locus a1 which is the drop locus of the specific different color granular material w1 related to the detection by the different color particle presence detection means 9 is reached.

  The separation collection unit 4 accommodates the granular material w that has fallen from the lower end of the flow-down basket 2 and passed through the optical sorting means 3, and the non-defective product storage unit 4a passes through the normal movement locus a1 and reaches the non-defective product receiving port 4a1. The defective product receiving portion 4b is configured to receive the defective product receiving portion 4b from the normal movement trajectory a1 by the air flow ejected from the air ejection nozzle 17, and then travels upward and outward from the normal travel trajectory a2. The granular material w having reached 4b1 is accommodated.

  A granular material supply path 23 extends from the raw material tank 101 to move the granular material w in the raw material tank 101 into the hopper 5, and a granular material transfer path 24 extends from the non-defective product containing portion 4 a. The granular material w in the non-defective product storage portion 4a is transferred into the non-defective product tank 102, and the granular material transfer path 25 is extended from the defective product storage portion 4b so as to transfer the defective product storage portion 4b. The granular material w inside is transferred into the defective product tank 103.

  A shutter 27 that is moved forward and backward in the specific direction f3 by the driving device 26 is provided below the detection range of the different color granular material w1 by the different color granular material detection means 9. When the shutter 27 is in the retracted state as shown by the solid line in FIG. 1 by the driving device 26, the shutter 27 has no effect on the flow of the granular material w falling from the downflow rod 2, while the phantom line e in FIG. When the advancing state as shown in FIG. 4 is established, all of the granular material w that falls from the flow-down rod 2 is dropped into the defective product storage portion 4b.

  The driving device 26 may be any device such as a fluid pressure cylinder device, an electric motor, or a solenoid, and affects the selection of the granular material w1 such as the area sensor 11, the illumination lamp 13, the air injection nozzle 16, and the electromagnetic valve 15. The shutter 27 is set in the advanced state in relation to the occurrence of the failure of the applied portion, and the shutter 27 is held in the retracted state when the portion that affects the selection of the granular material w is operating normally.

Next, a usage example and operation when the grain which is the granular material w is selected using the above-described color sorter will be described.
The grains w and the like stored in the raw material tank 101 are supplied into the hopper 5 through the granular material supply path 23. At this time, the grains w and the like are always maintained at a constant level in the hopper 5. Is preferred.

Under this condition, the grain w in the hopper 5 falls on the bottom surface of the trough 6 through the exit passage, and on the other hand, the trough 6 is vibrated back and forth and up and down by the operation of the electromagnetic drive means 7. Grains w and the like that have fallen on the bottom of the trough 6 are gradually fed to the front f1 and are supplied from the sending part 6a so as to drop to the guide start end of the flow guide surface 2a of the flow trough 2.
At this time, the flow rate of the grain w or the like from the feeder 1 to the downstream ridge 2 is automatically adjusted to a specific size that provides good sorting performance by the control operation of the flow rate control device 8.

  On the flow guide surface 2a of the flow rod 2, after the grain w or the like slides linearly in a single layer state within a specific width and reaches the lower end of the flow rod 2, the flow guide surface 2a is It falls while flying on the normal movement locus a1 extended downward. If the falling grain w or the like is a non-defective grain w in this way, this reaches the granular object imaging position g of the area sensors 11 and 11, and the area sensor 11 and 11 is exposed to light from the illumination lamp 13. Even if the area sensors 11 and 11 receive the transmitted light or reflected light from the grain w, the different color grain presence detecting means 9 does not detect the different color granular substance w1, The grain w1 falls on the normal movement locus a1 as it is, and is accommodated in the non-defective container 4a through the non-defective receiving port.

  On the other hand, when the falling grain w or the like is a mixture of pebbles, metal pieces, or different-colored granular material w1 such as poor quality grain as shown in FIG. The light receiving pixels at specific positions of the area sensors 11 and 11 that have received the transmitted light and reflected light from the different color granular material w1 sense a light amount change of a certain level or more. The presence of the particulate matter w1 is detected and a detection signal is issued, and this detection signal is input to the valve control device 14.

  The grains and the like that have fallen from the downfall 2 reach the relatively wide granular object imaging range g of the area sensors 11 and 11, and the grains w and the like that are falling in the granular object imaging range g move here. During the period, the light-receiving pixel of the area sensor 11 senses a change in the amount of light of a certain degree or more related to the different color granular material w1 when the grain w or the like includes the different color granular material w1, When the different color granular material w1 reaches the detection position g1, a presence detection signal is output.

  The presence detection signal is input to the valve control device 14. In this connection, the valve control means 14 counts the elapsed time from the time when the presence detection signal is input from the different color particle presence detection means 9. When the specific adjustment time has elapsed, the current for opening the corresponding solenoid valve 15 is continuously sent out during a predetermined extremely short specific time.

  The solenoid valve 15 supplied with a current from the valve control device 14 is instantly opened and causes the compressed air to flow to the corresponding air jet nozzle 16 through the corresponding vent pipe 19. The air jet nozzle 16 causes the compressed air to flow. It is ejected instantaneously toward the specific drop position d1. The air flow generated by the compressed air thus ejected reaches the specific drop position d1 after the air flow arrival delay time has elapsed from the time when the valve opening current is generated from the valve control device 14. At this time, since the internal volume and the total length of the air passages from the air outlet of each electromagnetic valve 15 to the corresponding air ejection nozzle 16 are substantially the same, the air flow arrival delay time for each air injection nozzle 16 Are substantially the same. On the other hand, each of the different colored granular materials w1 related to the detection by the different colored particle presence detecting means 9 arrives at the specific drop position d1 after the granular material arrival delay time has elapsed from the respective detection time points.

  Therefore, each of the different color granular materials w1 detected by the different color particle presence detecting means 9 is ejected from the corresponding air injection nozzle 16 even if they exist at various positions in the left-right direction of the normal movement locus a1. An external force is applied at an accurate timing by the air flow generated by the air, and the normal movement trajectory a1 is repelled away from the outside, sorted out from the non-defective grain w, etc., and flies over the upper movement trajectory a2. Then, it falls into the defective product receiving portion 4b through the defective product receiving port.

  Thus, when each of the different color granular materials w1 detected by the different color particle presence detecting means 9 is repelled by the air flow, the non-defective grain w existing near each different color granular material w1 is also repelled together. However, since the air flow accurately applies an external force to each different color granular material w1, the amount of good grains w falling into the defective product storage portion 4b is small. It will be a thing.

  As a result of the sorting process as described above, the grains w and the like housed in the non-defective product storage section 4a are transferred into the non-defective product tank 102 through the granular material transfer path 24 and stored in the defective product storage section 4b. The different color granular material w1 and the non-defective grain w are transferred into the defective product tank 4b through the granular material transfer path 25, and the grain w in the defective product tank 4b is re-colored again as necessary. The sorting process is performed.

It is a side view which shows the outline | summary of the granular material color sorter | selector based on 1st Example of this invention. It is a rear view which shows the nozzle assembly, the power stop valve, the vent pipe, etc. in the said sorter. It is the figure which looked at the said nozzle assembly from diagonally downward. It is a partial rear view of the nozzle assembly. It is the figure which looked at the longitudinally facing surface b1, b2, b3 of the said nozzle assembly from the side. It is the figure which looked at the falling soot, the air injection nozzle, and a different color granular material in the said sorter from the front.

Explanation of symbols

4b1 Defective product entrance (specific area)
DESCRIPTION OF SYMBOLS 15 Power stop valve 16 Air injection nozzle 18 Air inflow port 19 Ventilation pipe 22 Communication hole 17 Nozzle aggregate 17a Front surface part 17b Upper surface part 17c Lower surface part 17d Rear surface part 17e Inclined surface part d1 Specific fall position f2 Horizontal specific direction w1 Different color granular material

Claims (4)

  A number of power stop valves that are temporarily opened in connection with the detection of the presence of the different color particulate matter, and a number for generating an air flow that blows the different color particulate matter that has reached a specific drop position to a specific area. A plurality of air inlets formed in a linear arrangement in a specific horizontal direction and individually connected to each of the air injection nozzles, and each of the power stop valves described above In a granular color sorter provided with a plurality of vent pipes each having a plurality of vent pipes each communicating with another air inlet, the two air inlets adjacent in the horizontal specific direction are vertically viewed in side view. And the granular material color sorter characterized by being arranged so as to be displaced in the front-rear direction and having the same length of each of the vent pipes.   A number of power stop valves that are temporarily opened in connection with the detection of the presence of the different color particulate matter, and a number for generating an air flow that blows the different color particulate matter that has reached a specific drop position to a specific area. A plurality of air inlets formed in a linear arrangement in a specific horizontal direction and individually connected to each of the air injection nozzles, and each of the power stop valves described above In the particulate color sorter comprising a plurality of vent pipes each having a plurality of vent pipes each communicating with another air flow inlet, the air injection communicated from each air outlet of the power stop valve to the air outlet A granular color sorter characterized in that the internal volume in the air passage leading to the nozzle is substantially the same.   The granular material color sorter according to claim 1 or 2, wherein each of the communicating holes communicating the air injection nozzles with the corresponding air inlets has substantially the same length.   The nozzle assembly includes a front portion, a top portion, a lower portion and a back portion, and an inclined surface portion connecting the lower portion and the rear portion, and a large number of the air injection nozzles at the upper portion of the front portion. Is formed in a linear arrangement in the left-right direction, and on a longitudinal surface including each of these air injection nozzles, and at a specific location that is any one of a lower surface portion, a back surface portion, and an inclined surface portion, Forming the air inlet communicated with the air injection nozzle on the longitudinal surface including a specific portion, the air inlets adjacent in the left-right direction are the lower surface portion, the back surface portion The granular material color sorter according to claim 1, 2 or 3, wherein the granular color sorter is formed at two different portions of the inclined surface portions.

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