JPS63278558A - Controller for rice-hulling selector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a huller sorting method in which paddy is culled by a huller mechanism, and then only brown rice is sorted and taken out from the grained rice after dehulling. The invention relates to a control device for a machine.

[Conventional technology]

Recently, a rotary sorting mechanism with a brown rice catcher installed in a horizontally rotating sorting cylinder with many recesses formed on the inner circumferential surface has been used to sort brown rice from rice that has been removed after descaling. is being carried out.

In this rotary sorting mechanism, the fallen rice supplied into the sorting cylinder is scraped up to a height by the rotation of the sorting cylinder, and then falls to the bottom as it is transferred through the sorting cylinder. In this method, the unpolished rice of the suriro rice fits in a recess and is lifted up to a high position and then falls, while the paddy of the suriro rice falls from a lower position than the brown rice. The brown rice that falls from a high position is caught in the brown rice receiving trough and taken out. Inside, you need a certain amount of rice.

In other words, if the amount of dropped rice in the sorting barrel is small and the fluidized bed is thin, the dropped rice will fly up due to the rotation of the sorting barrel, increasing the amount of paddy that enters the brown rice catcher. Therefore, the accuracy of sorting brown rice decreases. In addition, if the amount in the barrel is large and the fluidized bed is thick, the amount of ground rice flowing back to the hulling mechanism from the discharge side of the sorting barrel will increase, which will only increase the residual culm load in the hulling mechanism. Or, the rate at which brown rice is broken during detachment increases.

Therefore, Japanese Patent Application Laid-Open No. 60-38040 as a prior art describes a rice hulling sorting machine using a rotary sorting mechanism.
In the sorting cylinder of the rotary sorting mechanism, an in-body amount sensor is provided to detect the amount of dropped rice in the sorting cylinder, that is, the amount in the body, and the in-body amount sensor and the paddy supply control valve in the hulling mechanism are connected. It is proposed to provide a means for regulating the upper limit of the amount in the shell, which is interlocked and connected via a mechanical interlocking mechanism such as a link mechanism so that the paddy supply control valve closes when the amount in the shell exceeds the upper limit value. .

In addition, recently, when the amount detected by the amount sensor installed in the sorting barrel is higher than the appropriate amount of rice preset according to the properties of the paddy, a control valve for the amount of paddy supplied in the hulling mechanism has been introduced. A means for controlling the amount of paddy in the barrel is provided so that the amount in the barrel becomes approximately equal to the appropriate amount in the river by closing the barrel and opening the control valve for the amount of paddy supplied when the amount in the barrel is less than the appropriate amount in the river. There is.

[Problem that the invention seeks to solve]

However, when the above-mentioned upper limit regulation means and inner amount control means are used simultaneously in a rice huller that uses a rotary sorting mechanism, When is set to a value that exceeds the upper limit of the in-body amount upper limit regulating means, the following problems occur.

That is, when the appropriate in-stream amount in the in-hull amount control means is set to a value exceeding the upper limit value in the in-hull amount upper limit regulating means, the paddy supply amount control valve is supposed to be wide open by the in-hull amount control means. Since the in-shell amount upper limit regulating means will only allow the opening to be smaller than the opening degree corresponding to the appropriate amount in the torso, the amount in the torso will rapidly decrease.

As soon as the paddy supply amount regulating valve is released from being kept closed by the inside amount upper limit regulating means due to this decrease in the inside amount, the paddy supply amount adjustment valve is increased to a value corresponding to the appropriate inside amount in the inside amount control means. Since it will open rapidly to the opening degree, the amount in the sorting cylinder will increase rapidly, and the phenomenon of overrun exceeding the appropriate amount in the sorting cylinder, which is higher than the upper limit value, will be repeated. When performing control to make the amount approximately equal to the appropriate inflow amount, hunting becomes large and the control becomes extremely unstable.

The present invention prevents the above-mentioned problems from occurring when an upper limit regulation means for amount inside the shell and a means for controlling the amount inside the shell are applied simultaneously to a rice huller sorting machine using a rotary sorting mechanism. This is the purpose.

(Means for solving the problem) For this reason, the present invention provides a hulling mechanism with a rice supply amount adjustment valve and a brown rice receiving trough inside a horizontally rotating sorting cylinder that has a large number of recesses formed on the inner peripheral surface. and a rotary sorting mechanism provided in the sorting cylinder, and the internal amount sensor provided in the sorting cylinder and the paddy supply amount adjustment valve are activated when the amount of dropped rice in the sorting cylinder exceeds an upper limit value. It is provided with an upper limit regulation means for regulating the amount in the shell which is interlocked and connected so that the paddy supply amount regulating valve is closed, and further, the amount in the shell detected by the amount sensor in the shell is equal to or substantially equal to the appropriate amount in the shell set in advance. In a hulling sorter comprising an in-shell amount control means configured to open and close the paddy supply amount regulating valve, when the in-shell amount control means operates the paddy supply amount regulating valve in the opening direction, the amount of paddy supplied is adjusted. The opening adjustment means is provided to reduce the opening degree of the paddy supply amount control valve when the control valve does not open.

[Action/effect of the invention]

With this configuration, by setting the appropriate in-hull amount in the in-hull amount control means to a value exceeding the upper limit value in the in-hull amount upper limit regulating means, the paddy supply amount regulating valve is controlled by the in-hull amount control means. Although it is supposed to be opened wide, if it is opened only to an opening smaller than the opening corresponding to the appropriate amount in the barrel due to the upper limit regulating means in the barrel, the opening of the paddy supply amount control valve is changed to the opening. Since the opening degree can be corrected to a small value by the degree correction means, as soon as the paddy supply amount regulating valve is released from being kept closed by the maximum limit regulating means in the shell due to a decrease in the amount in the shell, the paddy supply 1fJ1 control valve By simply opening the valve to a small opening corrected by the opening correcting means, it is possible to prevent the cylinder from rapidly opening to a large opening corresponding to the appropriate amount in the cylinder by the cylinder internal quantity control means.

As a result, it is possible to prevent the amount inside the torso from increasing rapidly, so it is possible to reduce the amount in the torso from overrunning the appropriate amount inside the torso.

Therefore, according to the present invention, it is possible to solve problems that occur when a hull maximum limit regulating means and a hull quantity control means are used in a hulling sorter using a rotary sorting mechanism. This has the effect of reliably reducing hunting that occurs when the internal amount is set to a value higher than the upper limit value in the maximum limit regulating means in the cylinder, and improving the stability of sorting control.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. The rice hulling sorting machine includes a horizontally long box-shaped wind selection mechanism 1, a hulling mechanism 2 mounted on the upper left surface of the wind selection mechanism 1, and The entire system is composed of a rotary sorting mechanism 3 mounted on the upper right side of the mechanism 1.

The hulling mechanism 2 includes a case 4 with a paddy supply hopper 5;
A pair of left and right desiliconization rolls 6.7 provided in the case 4;
Equipped with a manual opening/closing shutter 8 and a paddy supply amount adjustment valve 9, both of the de-aging rolls 6 and 7 are rotationally driven by a de-aging motor 10 provided inside the wind selection mechanism 1, and one of them is The desiliconizing roll 6 is of a fixed position type, but the other desiliconizing roll 7 is moved toward or away from the one desiliconizing roll 6 by a gap joint mechanism 12 driven by an actuator 11. Furthermore, the paddy supply amount regulating valve 9 is configured to be opened and closed by an opening/closing mechanism 13, which will be described in detail below.

In this case, the valve shaft 9a of the paddy supply amount regulating valve 9 is provided with an opening sensor 15 for detecting the opening K of the paddy supply Wm regulating valve 9, and the shutter 8
A paddy flow switch 25 consisting of a light emitter 25a and a light receiver 25b is provided between the paddy supply amount control valve 9 and the paddy supply amount regulating valve 9.

The air selection mechanism 1 includes a pressure fan 16 that sucks the atmosphere;
It consists of a dust removal fan 17, a wind selection section 18 for fallen rice and a wind selection section 19 for brown rice, which are provided between the two fans 16 and 17.
The fallen rice wind sorting unit 18 is located almost directly below the hulling mechanism 2 and wind-sorts the chaff from the fallen rice after normal culm.
The fallen rice after wind selection is transferred to the fallen rice gutter 20 with a spiral conveyor 21.
The brown rice is sent to the rotary sorting mechanism 3 by the packet conveyor 22, and the brown rice wind sorting section 19 further performs finishing wind sorting on the brown rice sorted by the rotary sorting mechanism 3. The finished brown rice is sent to brown rice gutter 23 with a spiral conveyor.
The packets are taken out of the machine by the packet conveyor 24.

In this case, each spiral conveyor 21 and packet conveyor 22.24 as well as both fans 16.17 are powered by the milk roll 6.7.

On the other hand, the rotary sorting mechanism 3 includes rotary sorting cylinders 27 horizontally installed in upper and lower stages in the box-shaped case 26, and both sorting cylinders 27 are installed horizontally in the box-shaped case 26. The shafts 28 are rotatably supported by rotors 29 attached to the shafts 28, and the shafts 28 are connected via a continuously variable transmission mechanism 30 to
By being connected to the rolls 6.7, both sorting cylinders 27 are configured to be rotationally driven in the direction indicated by arrow A in FIG.

The two sorting cylinders 27 have one end farthest from the hulling mechanism 2 on the supply side 27a, and the other end close to the hulling mechanism 2 on the discharge side 27a.
A large number of recesses 31 are formed on the inner surface of each of the recesses 31, each having a size large enough to fit brown rice.

Furthermore, in both sorting cylinders 27, II! ! A brown rice receiving gutter 32 with a rotary conveyor is provided, and a sliding rice receiving gutter 33 with a spiral conveyor is arranged adjacent to the brown rice receiving gutter 32.

The fallen rice sent from the packet conveyor 22 is
Approximately equal amounts of brown rice enter the two-sided rice receiving trough 33 through the chute 34, and are supplied to the supply side 27a in the sorting cylinder 27 through the two suri-suri fallen rice receiving troughs 33, while the two brown rice receiving troughs 3
The brown rice that has entered the chamber 2 is configured to join a chute 35 and then fall into the brown rice screening section 19.

Further, the discharge side 27b of both sorting cylinders 27 is provided with a plurality of paddy scraping blades 36 on its inner surface, and the paddy removing mechanism 2
There is a paddy return chute 3 between the paddy supply hopper 5 and the paddy supply hopper 5.
7 is mounted thereon, and is configured to return paddy to the paddy supply hopper 5.

Furthermore, a sensor shaft 39 rotatably supported by the box-shaped case 26 is disposed inside both the sorting cylinders 27, and the sensor shaft 39 comes into contact with the fluidized bed of fallen rice in the sorting cylinder 27. At the same time, a sensor plate 4o is attached to the sensor shaft 39, and the sorting cylinder 2
An in-shell amount sensor 41 is connected to detect the thickness of the fluidized bed of fallen rice in the inside of the barrel, that is, the amount Q in the barrel.

On the other hand, the sensor shaft 39 and the valve shaft 9a of the paddy supply N control valve 9 are connected to the sensor plate 4 on the sensor shaft 39.
0 rotates in the direction of the storage place in the barrel, the paddy supply amount control valve 9 rotates in the closing direction through the mechanical interlocking mechanism 42. In this case, a long groove hole 42a is provided so that the rotation of the paddy supply amount adjustment valve 9 is not transmitted to the sensor shaft 39 side, and paddy is supplied only when the amount Q in the barrel exceeds the upper limit value Qma. The amount regulating valve 9 is configured to close, thereby forming an upper limit regulating means for the amount in the body.

Further, the opening/closing mechanism 13 for the paddy supply 1iJ11 control valve 9 is configured as follows.

That is, as shown in FIG. 4, this opening/closing mechanism 13 includes a screw shaft 13a and a nut 1 screwed onto the screw shaft 13a.
3b, an inclined cam plate 13c is fixed to the nut 13b, a protrusion 9b fixed to the valve shaft 9a is brought into contact with the inclined cam plate 13C, and the screw shaft 13a is rotated to rotate the inclined cam plate 13b. is configured to increase or decrease the opening degree of the paddy supply amount control valve 9 by moving it in the axial direction of the screw shaft 13a.
A gear 13e is provided, and a gear 13g on the output shaft of the motor 13f meshes with the gear 13e.
The screw shaft 13a is also configured to be rotated by the motor 13f.

Reference numeral 38 denotes an opening/closing mechanism for the paddy supply amount regulating valve 9, which receives signals from the opening sensor 15, the paddy flow switch 25, and the internal amount sensor 41 of the paddy supply amount regulating valve 9. 13 motor 13f; Ir - An electronic control device for operating the motor 13f; an in-shell amount control means configured to close the paddy supply amount regulating valve 9 when the amount Qo is greater than the amount Qo, and open the paddy supply amount regulating valve 9 when the amount Q in the barrel is less than the appropriate amount Qo; Opening degree correction in which the opening degree K of the paddy supply amount regulating valve 9 is reduced when the paddy supply amount regulating valve 9 does not open when the paddy supply amount regulating valve 9 is operated in the opening direction by the internal amount control means. and means.

To explain this in detail in the flowchart of the embodiment shown in FIG. 5, in step S1 following the start, it is determined whether or not the paddy flow switch 25 is turned on, and when the paddy flow switch 25 is not turned on, that is, When there is no flow of paddy or the flow of paddy is small, it is determined in step S2 whether or not the X flag, which will be described later, is set to 1. If the X flag is not -1, the amount Q in the barrel is read in step s3, and step S4 , the amount Q inside the torso is
Quantity Q suitable for control by the above-mentioned body amount upper limit regulating means
1, and if Q>Ql is not the case, the current opening degree K of the paddy supply amount control valve 9 is read in step s5, and this opening degree K is determined in the next step S6.
is stored as 1, and after reading the preset appropriate in-shell amount Qo in step S7, in step s8, the equivalent opening degree Ko of the paddy supply amount regulating valve 9 that can obtain the appropriate in-shell amount QO is calculated. do.

In the next step S9, the opening degree is compared with the equivalent opening degree KO, and when K>KO, in step SIO, the cam plate 13c is moved in the closing direction by the rotation of the motor 13f and then returned, while K> If it is not Ko, the opening degree is again compared with the equivalent opening degree KO in step Sll, and K<K.

If not, that is, when the opening degree K is approximately equal to the equivalent opening degree Ko, the X flag is set to 1 in step S12, and then the process returns.

On the other hand, when K<Ko in the step Sll, that is, when the opening degree K is smaller than the equivalent opening degree KO, the cam plate 13 is rotated by the rotation of the motor 13f in step S13.
c in the open direction, and in the next step S14, the opening degree K of the paddy supply amount control valve 9 is read, and then in step S14.
Comparing this opening degree in 15 with 1 above, K>
Kl, that is, the paddy supply amount control valve 9 is in step S1.
When the cam plate 13c is opened by moving in the opening direction in step S13, the return is made as is, but when K>Kl is not established, that is, the paddy supply it control valve 9 is closed in step S13.
If the cam plate 13c does not open by moving in the opening direction in step S16, the motor 13
After the cam plate 13c is moved in the closing direction by the rotation of f, it returns, and by going through the routine from step S1 to step 313, it is possible to check whether there is any flow of paddy in the initial stage of starting the huller sorting machine Alternatively, when the amount is low, the opening degree K of the paddy supply M control valve 9 can be set to a corresponding opening degree Ko that can obtain the appropriate amount QO in the shell.

Then, when the answer is yes in step S1, step S2 and step S4, the appropriate time To is set in step 317, step 318 and step S19.
(for example, 'l'o-60 seconds), the control state shifts to a steady control state, which will be described later.

That is, first, in step 520, the torso internal amount Q is set, and in step S21, the appropriate torso internal amount Qo is set in advance,
After reading each opening degree K of the paddy supply amount regulating valve 9 in step S22, the opening degree K is read in step S23.
is stored as Kl, and then in step S24, the amount Q in the torso and the appropriate amount Qo in the torso are compared, and Q > Q
o, that is, when the internal body amount Q is larger than the appropriate internal body amount Qo, the cam plate 13c is moved in the closing direction by the rotation of the motor 13f in step S25, and the X flag is set to 1 in step S26. Return, Q=Q
.

In this case, the process returns after setting the X flag to 1 in step 326. However, when Q<Qo, that is, when the internal cylinder amount Q is smaller than the appropriate internal cylinder lQo, the cam plate 13c is opened by the rotation of the motor 13f in step S27. After reading the opening degree K of the paddy supply amount regulating valve 9 in the next step 328, this opening degree is compared with 1 above in step S29, and when K>Kl, that is, the paddy When the supply M control valve 9 opens following the movement of the cam plate 13C in the opening direction in step 327, the process moves to step S26, but when K>Kl does not hold, that is, the paddy supply amount control valve 9 Step S27
If the cam plate 13c does not open by moving in the opening direction in step S30, the motor 13
After the cam plate 13c is moved in the closing direction by the rotation of f, the process moves to step S26, and by going through the routine from step S20 to step S26, the amount Q in the cylinder is adjusted to the preset value. Appropriate torso NQo
It is controlled so that it is equal to, but approximately equal to.

In this case, the appropriate torso amount Qo in the torso amount control means is set to the upper limit value Qn+ax in the torso amount upper limit regulating means.
When the setting exceeds , in step S27,
Even when the cam plate 13c moves in the opening direction, the paddy supply amount regulating valve 9 only opens to an opening degree corresponding to the upper limit value Qmax in the in-shell amount upper limit regulating means, and in step 329, K>Kl is set to On. The next step by becoming
At 3o, the cam plate 13c on the screw shaft 13a moves in the closing direction, so the opening degree of the paddy supply amount joint valve 9 is corrected to an opening degree smaller than the equivalent opening degree Ko corresponding to the proper barrel interior 1iQo. be. That is, the steps S23, S28, S29, and S30 correspond to the opening degree correcting means.

Therefore, as soon as the closure of the paddy supply amount regulating valve 9 by the in-shell amount upper limit regulating means is released due to a decrease in the in-shell amount fiQ,
The paddy supply amount control valve 9 can be prevented from rapidly opening to the large opening KO corresponding to the appropriate in-hull amount QO in the in-hull amount control means by simply opening to the opening degree corrected by the opening degree correcting means. It is.

Note that the X flag is used to determine whether or not it is necessary to perform initial control.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged longitudinal sectional front view of a hulling machine, FIG. 2 is a longitudinal sectional front view of a hulling and sorting device, and FIG. 3 is an enlarged sectional view along the line mm of FIG. 2. 4 is a perspective view showing the interlocking relationship between the internal amount sensor and the paddy supply amount regulating valve, and FIG. 5 is a diagram showing a control flow sheet. 2... Hulling mechanism, 3... Rotary sorting mechanism, 5...
...Paddy supply hopper, 6.7...Tax culm roll, 9
...Paddy supply amount control valve, 10 ... Regulation motor, 1
3...Opening/closing operation mechanism of paddy supply amount control valve, 15...
・Opening sensor for paddy supply amount control valve, 27... Sorting barrel, 32... Brown rice receiving trough, 39... Sensor shaft, 4
0...sensor plate, 41...inner body amount sensor,
42... Interlocking mechanism, 38... Control device. Patent applicant Yanmar Agricultural Machinery Co., Ltd. Figure 1

Claims (1)

[Claims] (1) Equipped with a hulling mechanism with a paddy supply amount regulating valve, and a rotary sorting mechanism with a brown rice receiving trough inside a horizontally rotating sorting cylinder with a large number of recesses formed on the inner circumferential surface, and An internal amount sensor provided in the sorting barrel and the paddy supply amount regulating valve are interlocked and connected so that the paddy supply amount regulating valve closes when the amount of dropped rice in the sorting barrel exceeds an upper limit value. and an upper limit regulating means for regulating the amount of paddy in the hull, and further configured to open and close the paddy supply amount regulating valve so that the amount in the hull detected by the amount sensor in the hull is equal to or substantially equal to a preset appropriate amount in the hull. In a hulling sorter comprising a barrel amount control means, when the paddy supply amount regulating valve does not open when the hull amount controlling means operates in the opening direction of the paddy supply amount regulating valve, the paddy supply amount is changed. 1. A control device for a rice huller sorting machine, characterized in that it is provided with an opening degree correcting means for reducing the opening degree of a control valve.