JPH02261579A - Grain detecting device in grain sorting equipment - Google Patents

Abstract

PURPOSE:To enhance detection precision by providing a detection and inhibition means between an upper grain detector and a lower grain detector. CONSTITUTION:Grain to be sorted is sorted while unpolished rich which is highly scraped up by the potholes of a rotary sorting cylinder 11 and has short grain length is allowed to fall to an upper final rice gutter 16 and unhulled rice which is lowly scraped up and has long grain length is allowed to fall to the rotary sorting cylinder 11. The falling and sorting states of grain scraped up by the rotary sorting drum 11 are detected by an upper grain detector and a lower grain detector provided to the final rice gutter 16. A detection and inhibition means is provided by which the grain allowed to fall to the part of the lower grain detector is detected in the case of detection by this lower grain detector and also grain is inhibited from being introduced into the detection region of the lower grain detector. Therefore, the grain allowed to fall to the upper part is not detected by this lower grain detector 31 and thereby detection precision is enhanced.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a grain sorting device for sorting mixed rice of paddy and brown rice using a rotating sorting cylinder having a large number of pot holes on its inner circumferential surface. The present invention relates to a grain detection device.

[Prior art]

There is a grain sorting device that sorts a mixed rice of paddy and brown rice by rotating a rotary sorting tube, which has a large number of pot holes on its inner circumferential surface, around a horizontal axis. Inside this rotary sorting cylinder, a finishing rice gutter for receiving brown rice is installed horizontally.
In addition, the unhulled rice that has been scraped up low and has long grains is sorted as it falls into the rotating sorting cylinder. As a conventional technique for detecting the falling condition of the grains scraped up by the pot hole of this rotating sorting tube into the finished rice receiving gutter, the Utility Model No. 58-119
There is a publication No. 890.

[Problems to be solved by the invention] In this conventional device, a plurality of detectors for detecting the high and low falling sorting status of starch grains into the finished rice gutter are attached directly to the plate surface of the two rice gutter. It is being Therefore, the detector located below contains grains that have fallen onto the detector and grains that have fallen above the detector and are flowing downward in the finishing rice gutter. This resulted in the detection of grains that were in the process of being removed, and there was a problem in that the detection accuracy of the lower detector was not accurate.

Therefore, the present invention aims to solve these problems and improve detection accuracy.

[Means to solve the problem]

The technical means of the present invention for solving such technical problems is a system in which brown rice is received in a rotary sorting cylinder 11 which has a large number of pot holes in its inner circumferential surface and rotates around a horizontal axis. A plurality of grain detectors 30 for detecting the grains scraped up by the rotary sorting tube 11 are installed at appropriate positions in the longitudinal direction of the rotary sorting tube 11 of the finishing rice gutter 16. ．．
In arranging the lower grain detector 31, 1- between the grain detector 30 and the lower general grain detector 31 - 1 grains moving from one side move the detection area of the lower grain detector 31 The grain sorting device is configured as a grain detection 71% device characterized by being provided with a detection prevention means 33 for inhibiting the detection.

[Operations and Effects of the Invention] When the mixed rice is sorted using the rotary sorting tube 11, among the grains to be sorted, brown rice with a short grain length that has been scraped up high by the pot hole of the rotary sorting tube 11 is -[on the other hand] The long-grained unhulled rice falls into the finishing rice gutter 16 and is scraped low, and is sorted as it falls into the rotating sorting tube 11.
The grains scraped by this rotary sorting cylinder 11 are divided into
The falling sorting situation is detected by an upper grain detector 30 and a lower grain detector 31 provided in the rice bin 16. and.

When detecting with the lower grain detector 31, the lower grain detector 3
In addition to detecting grains that have fallen into part 1.

” between the second grain detector 31 and the lower grain detector 31.

A detection blocking means 33 is provided to prevent grains moving from above to below the finishing rice gutter 16 from entering the detection area of the lower grain detector 31. Detector 3
In No. 1, grains that have fallen to one side are not detected, and the detection accuracy can be improved.

〔Example〕

An embodiment of the invention shown in one drawing will be described below.

First, the configuration of the embodiment will be explained. 1 is.

In the paddy removal section, this paddy removal section 1 is connected to a paddy hopper 2. It is composed of a pair of rolls 3, 3, etc. that take off the rolls. 4 is a PM fallen rice wind selection path, in which the fallen rice from the husking section 1 is sorted by the sorting wind generated by the suction fan 5 in front, and the rice husks are removed by the suction fan 5.
The rice is discharged from the machine through a dust exhaust pipe 6, and the mixed rice of brown rice and paddy is dropped and supplied to a dropped rice receiving trough 7 below. Slurry rice catcher 7
The mixed rice that has fallen into the mixed rice is fried by the mixed rice lifting machine 8 into the mixed rice hopper 9, and the fried mixed rice is sent to the starting end of the supply gutter 14 on the side of the rotary sorting cylinder 11. There is.

Reference numeral 10 denotes a sorting case, and inside this sorting case 10, there is a rotary sorting cylinder 11 having a large number of pot holes on its inner circumferential surface.
In order to rotate around the horizontal axis, the feed side end (right side in Figure 1), which is the sorting start side, and the discharge side end, which is the sorting end side (left side in Figure 1), are rotated at the same time by drive rollers 12, 12. It is rotatably supported. Inside this rotary sorting tube 11, there is a supply gutter 14 with a supply helix 13 and a column 1-1 with a rice helix 15. 16 is suspended horizontally.

This supply gutter 14 and rice bowl 16 are rotated into the sorting tube 11.
As shown in FIG. −
) ; Placed on the side that rotates downward from the
The mixed rice raised low by the pot hole in No. 1 is supplied! 1
114 and is conveyed by the supply helix 13 to the terminal end of the supply gutter 14, and the feed @A14 also functions as a mixed rice receiving gutter.

The discharge side end of the finishing rice trough 16 is connected to the finishing rice receiving trough 19 via the finishing rice flow lower tube 17 and the finishing rice grain board 18, and the finishing rice is transferred to the finishing rice grain board 18. Amount of finished rice 1i1
The brown rice that has been wind-selected while falling into the finished rice receiving trough 19 is taken out of the machine by the finished rice lifting machine 20.

A pumping cylinder 21 is connected to the sorting end side of the rotary sorting cylinder 11, and grains mainly consisting of unhulled rice mixed into the pumping cylinder 21 after sorting are removed by a paddy return gutter 22. It is configured so that the rice is returned to the reduced rice hopper 23 of the section 1.

In addition, the end of the sorting case 10 on the side of the removing section 1 is
- A drive UJ that drives the shaft end 15a of the rice helix 15, the shaft end 13a of the supply helix 13, and the drive rollers 12, 12;
Shaft ends 24a of the roller shafts 24, 24.

24a to the side of the shedding part 1, and a pulley 2 is attached to each of the shaft ends 13a, 15a, 24a, 24a.
5,25. ...and these pulleys 25, 2.
5. The transmission belt 26 is hooked and rotated. This pulley 25, 25. Among these, the pulley 25 attached to the shaft end 15a of the finishing helix 15 is configured as a continuously variable speed pulley 25a that expands and contracts with a spring, and as the tension pulley 28 of the tension arm 27 moves, The effective diameter of the continuously variable speed pulley 25a is adjusted, and the rotational speed of the transmission belt 26 is changed and adjusted, thereby increasing or decreasing the rotational speed of the rotary sorting tube 11.

Incidentally, numeral 29 shown in FIG. 1 is an inclination adjustment means for adjusting the inclination of the rotary sorting tube 11 by vertically moving the longitudinal rear portion of the rotary sorting tube 11, that is, the right side portion in FIG. 6 30.31 is an upper grain detector and a lower grain detector provided in the finished rice receiving trough 16, which have the function of detecting grains thrown up by the one-rotation sorting tube 11. and is attached to the support device 32. Above this grain detector 30
The lower grain detector 31 is connected to the rotating sorting tube 1 of the finishing rice gutter 16.
1, that is, at an appropriate position from the supply side to the discharge side of the rotary sorting tube 11, and
They are arranged vertically at a predetermined distance along the vertical direction of the one-rice gutter 16, that is, the direction perpendicular to the longitudinal direction of the rotary sorting cylinder 11. Note that a plurality of sets of the upper grain detector 30 and the lower grain detector 31 may be provided in the longitudinal direction of the single-rotation sorting tube 11, or they may be arranged shifted in the longitudinal direction of the rotary sorting tube 11. . The support device 32 is arranged along the -1- plane of the finishing box 16, and the upper grain detector 30
The lower grain detector 31 is attached to the lower plate part 32a which is close to the finishing rice trough 16 on the upper side of the support part vL32, and the lower grain detector 31 is attached to the finishing rice trough 16 on the lower side of the support device 32. The bent portion 3 is attached to the high plate portion 32b which is a predetermined distance above from the bent portion 3 between the low plate portion 32a and the high plate portion 32b.
2c includes a detection prevention means 33 that prevents grains flowing from one side from moving in the detection area of the lower grain detector 32;
The upper grain detector 3 is configured such that the hole 33 is an example of
When the detected grains fall to 0 and flow downward,
It flows downward through this hole 33a, and the lower axial particle detector 3
1 so that it will not be detected again.

Note that 34 is a support portion for attaching the support device 32 to the sorting case 10. In addition, the upper grain detector 30 and the lower grain detector 31 are configured to detect grains when they collide in this embodiment. It may also be something that detects the presence or absence of.

Incidentally, the detection prevention means 33 is a 1: upper grain detector 30.
The grains that are detected by falling to the upper part of the finishing rice gutter 16 or the grains that have fallen to the upper part of the finishing rice gutter 16 pass over the upper grain detector 31 again while flowing down in the finishing rice gutter 16 and are detected as lower grains. It suffices if it has a function to prevent detection by the device 31 as well.
For example, a guide plate (not shown) may be provided above the lower grain detector 31 to guide the grains flowing down from above to the left and right. The lower grain detector 31 is attached to the plate surface of the support plate (not shown) with a grain passing space (not shown) below.
It may be configured to be installed at a predetermined distance above, or, alternatively, between the general grain detector 0 and the lower grain detector 31, a blower device (
(not shown) may be provided.

The detection information detected by the upper grain detector 30 and the lower grain detector 31 is inputted to the arithmetic control unit 39 incorporating a CPU via an amplifier 35.36 and an input interface 37.38. Ru.

The arithmetic control unit 39 also includes an output interface 40.
A forward rotation drive circuit 42 and a reverse rotation drive circuit 43 are connected via 41. The adjustable setting reference information in the arithmetic and control unit 39 is compared with the detection information of the upper grain detector 30 and the lower grain detector 31.

The following control is performed.

(2) - When the grain detector 30 does not detect a grain but the lower grain detector 31 detects a grain.

Since the sorting state of the rotary sorting tube 11 is normal, the arithmetic control unit 39 does not output a drive signal to the If2 (J control motor 44), and the rotary sorting tube 11 rotates at the same rotation speed.

■," - If both the grain detector 30 and the lower grain detector 31 detect grains and the rotary sorting tube 11 scrapes up too many grains, the grains are scooped up high and the grains are crushed. Finished rice gutter 16
The unhulled rice falls into the finishing rice gutter 16, reducing the sorting accuracy. In such cases.

The setting standard information and the detection information are compared, and the calculation control unit 3
A deceleration drive signal is output from 9 to the normal rotation drive circuit 42, and the rotation control motor 4 adjusts and controls the rotation speed of the rotation sorting tube 11.
4 is forward rotation Ilp! tII, the effective diameter of the continuously variable speed pulley 25a is reduced through the adjusting means 46 such as a speed change gear or an adjusting bolt, and the transmission speed of the transmission belt 26 is adjusted to reduce the speed.

(2) When neither the upper grain detector 30 nor the lower grain detector 31 detects grains, the rotary sorting cylinder 11 is not raking up much, and the amount of brown rice falling into the finishing rice gutter 16 is in a state of being small. In such cases.

The setting standard information and the detection information are compared, and the calculation control unit 3
A speed increasing drive signal is output from 9 to the reverse drive circuit 43, and the rotation control motor 4 adjusts and controls the rotation speed of the rotation sorting tube 11.
4 is driven in the reverse direction, the effective diameter of the continuously variable speed pulley 25a is expanded through adjusting means such as a speed change gear and an Li joint bolt, and the transmission speed of the transmission belt 26 is increased and adjusted.

In addition, instead of adjusting the rotation speed of the single-rotation sorting tube 11, the inclination adjustment means 29 for adjusting the longitudinal inclination of the rotation sorting tube 11 or the paddy supply amount control valve 45 of the husking section 1 can be adjusted in a related manner. It may also be controlled.

Next, the operation of the embodiment will be explained. When carrying out hulling work, raw rice is supplied to the rice hopper 2, and each rotating part of the hulling machine is driven. Then, rolls 3 and 3 are released from paddy hopper 2.
The paddy supplied to the machine undergoes a shedding action, and the fallen rice is wind-selected in the downward sliding rice wind sorting path 4, and the rice husks are discharged from the dust exhaust pipe 6 to the outside of the machine. The mixed rice of brown rice and paddy is dropped and supplied to the sliding rice receiving trough 7, is fried by the mixed rice hopper 9 in the mixed rice grain lifting machine 8, and is supplied to the starting end side of the supply trough 14 on the side of the rotary sorting cylinder 11. Then, it is supplied to the supply side end of the rotary sorting tube 11 by the supply helix 13 in the supply trough 14.

Next, the mixed rice is scraped up by the pot hole of the rotary sorting tube 11 rotating clockwise, and brown rice with short grain length is scooped up high and falls into the finished rice fi416. In addition, mixed rice consisting of paddy that has been scraped and some brown rice is
The unsorted mixed rice that has fallen into the supply gutter 14 and has been sorted is fed again into the rotary sorting till from the conveyance end of the feed gutter 14 by the feed helix 13 and is re-sorted.

In addition, the finished rice that has fallen into the finishing rice gutter 1G is conveyed to the finishing rice flow lower tube 17 by the finishing rice helix 15, and is transferred to the finishing rice flow grain plate 18.
While falling into the finished rice receiving trough 19, the rice is sorted by a sorting wind and taken out of the machine by the finished rice lifting machine 20.

Grains mainly composed of paddy after sorting sent to the sorting end of the rotary sorting tube 11 flow into the pumping tube 21, pass through the paddy return gutter 22, and are returned to the reduced paddy hopper 23 of the shedding section 1. , is stripped again.

As mentioned above, during the sorting work of mixed rice, the brown rice that has been scraped up high by the pot hole of the rotary sorting tube 11 falls into the finishing rice gutter 16, and the paddy rice that has been scraped up low and low falls into the rotary sorting tube 11. During such sorting, the upper grain detector 30 does not detect grains, and the lower grain detector 3
When the sorting state of the one-rotation sorting cylinder 11 in which grains are detected is normal, the one-rotation sorting cylinder 11 rotates at the same rotational speed; and the lower grain detector 31 both detect grains, and if the rotary sorting cylinder 11 scrapes up too many grains, the rotational speed of the rotary sorting cylinder 11 is controlled to slow down, and, ■If both the upper grain detector 30 and the lower grain detector 31 do not detect grains, the rotating sorting tube 11 is not scraping up much, and the amount of brown rice falling into the finishing rice bowl 16 is small. In this state, the rotational speed of the rotary sorting tube 11 is increased and adjusted.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a cutaway side view, FIG. 2 is a cutaway rear view, FIG. 3 is a front view and circuit diagram, and FIG. 4 is a perspective view. FIG. 5 is a cutaway side view. Explanation of symbols 3a Slipping section Slipping roll Suction fan Sliding fallen rice receiving gutter Sorting case Drive roller shaft end Finishing Rice Spiral finishing Rice gutter Finishing Rice flow Grain plate finishing Rice grain lifting machine 5a Paddy hopper Sliding fallen rice wind sorting path discharge Dust tube Mixing rice grain lifting machine Rotating sorting tube supply Helical supply gutter Shaft end finishing Rice flow Lower tube Finishing Rice receiving gutter Pumping cylinder 3a Paddy reduction gutter Drive roller shaft pulley Tension arm Tension pulley Upper grain detector Support device Hole amplifier Input interface Input interface Arithmetic control section Output interface Output interface Forward rotation drive circuit control motor Paddy supply amount adjustment valve 23 'a Original refined paddy hopper 4a Shaft end 26 Transmission belt inclination adjustment means Lower grain detector Detection blocking means Support section amplifier 43 Reverse drive circuit Representative Eihisa Mizuta Figure 2 Figure 5 Figure 4

Claims (1)

[Scope of Claims] [1] Finished rice trough 16 for receiving brown rice in a rotary sorting cylinder 11 which has a large number of pot holes in its inner peripheral surface and rotates around a horizontal axis.
A plurality of upper grain detectors 30 and lower grain detectors are installed at appropriate positions in the longitudinal direction of the rotary sorting tube 11 of the finishing rice gutter 16 and detect the grains scraped up by the rotary sorting tube 11 above and below. 31, a detection blocking means 33 is provided between the upper grain detector 30 and the lower grain detector 31 to prevent grains moving from above from moving in the detection area of the lower grain detector 31. A grain detection device for a grain sorting device, characterized in that: