JPH0757323B2 - Rice polishing equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rice polishing apparatus.

[Conventional technology]

Conventionally, the adjustment of the whiteness of a pressure-type rice milling machine that presses the rice-polishing outlet of a rice-polishing room with a rice-polishing roll with a cover is mainly by adjusting the position of the weight that presses the cover or adjusting the spring strength with a screw. Therefore, there has been a configuration in which a whitening degree setting switch for obtaining an arbitrary whitening degree is set in advance to obtain an appropriate whitening degree by detecting the load current of the drive motor (for example, Japanese Patent Laid-Open No. 57-91749).

[Problems to be Solved by the Invention]

However, since the load current of the motor is obtained, the control tends to be complicated.

[Means for Solving the Problems]

This invention connects a rice polishing sensor 3 which is displaced by a rice polishing load in a rice polishing chamber 2 containing rice polishing rolls and a rice polishing resistance adjusting device 5, and a spring 25 which resists the above displacement of the rice polishing sensor 3.
Is provided and the spring pressure of the spring 25 is changed to a large or small amount to configure a whitening degree setting device 4 for changing the rice polishing resistance by the rice polishing resistance adjusting device 5 to a large or small level.
The pressure of the spring 25 by means of the spring receiving shaft 27 can be set in a plurality of large and small stages while rotating the spring receiving shaft 27 forward and backward at a preset angle between each step, and while rotating the spring receiving shaft 27 forward and backward, The rice polishing apparatus is provided with a switching means 43 capable of arbitrarily changing the pressure of the spring 25.

[Operation and effect of the invention]

The whitening setting device 4 is an axis formed by a motor 26 that changes whitening resistance.
Since the configuration is such that the spring 26 pressure is changed by 27 rotations, change settings are easy and the configuration can be simplified. Therefore, even if the person who uses the unmanned rice polishing apparatus is a beginner, the operation is easy.

Moreover, the spring 25 pressure can be controlled not only by the motor 26 rotation but also by the manual changeover switch 43, so that there is a sensory difference between regions such as the whiteness of polished rice such as white or standard, and the shape depending on the variety. Even if the standard of rice polishing resistance to the desired whiteness is different due to the large and small size, difference in water content, hardness and softness of quality,
Since the whiteness is raised or lowered by the changeover switch 43 in advance, the standard whiteness level can be easily set.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

The rice milling apparatus shown in the figure is a pressure-type single-passing type rice milling machine, and the rice milling chamber 2 is formed by a whitening cylinder 6 having a hexagonal side cross section, and the whitening cylinder 6 has cylinder frames 7, 8 at both ends thereof. Among them, one end of the cylinder frame 7 forms a polished rice outlet 41 and is rotatably supported on the machine wall 9 on one side, and the other end forms one end of the milled rice roll 1 and rotates to the machine wall 10. A hollow shaft 11 movably supported is rotatably supported by a bearing 12. The space formed between the whitening cylinder 6 and the whitening roll 1 in the interior is referred to as a rice polishing chamber 2. Further, an opening 13 is provided on the side of the polishing frame 6 on the frame 8 side,
A funnel part 15 located at the lower end of the rice polishing tank 14 is provided in this opening 13.
Is inserted. Further, the refined tube 6 has a braided hole formed in a mesh shape, and a joint portion that is divided into two and joined as seen from a side surface forming a hexagon is vertically projected, and this posture is set as a predetermined mounting posture, and the cylinder frame 8 on one side is formed. Sensor arm with holes 16 from side to side
17 are projected.

The milled rice sensor 3 is composed of a milled barrel 6 rotatably supported by barrels 7 and 8 and the sensor arm 17.

The rice-polishing roll 1 is a hollow roll that is continuous with a feed spiral portion 18 that is fitted into the hollow shaft 11 and has a ridge 19 on the outer peripheral surface. A hole is provided at one end of the rice-polishing roll 1 so that the air blown from the fan is blown out from the hole through the hollow shaft 11. A transmission wheel is provided at the end of the hollow shaft 11 so that the power of the prime mover can be transmitted.
The spiral portion 18 is located below the funnel portion 15 of the rice polishing tank 14.

The whitening setting device 4 has three types of button switches, which are a standard button 20, an upper white button 21, and an 8-minute picking button 22, which are provided on the control panel 42 for setting the whitening degree, and an ON state of these button switches is lit up and displayed. A lamp 23 and a sequence unit 24 having a memory cassette for electrical control by whiteness designation operation
And a changing unit for changing the resilience of the spring 25 for receiving the sensor arm 17 of the sensor 3 for detecting the rice polishing resistance by the designated operation. This change part is a reversible motor 26 provided on the upper wall of the rice polishing machine.
A shaft 27 which is connected to the shaft of the sensor arm 17 and hangs downward is passed through the hole 16 of the sensor arm 17, and a groove 28 is formed on the lower side of the motor 26 on the circumference.
Is provided with a cam 29, and a limit switch 31 for turning on the roller 30 of the actuator by inserting the roller 30 of the actuator into the groove 28 is provided, and a spring receiving piece 33 that is screwed into a screw portion 32 formed under the shaft 27.
Is inserted into the guide hole 34 and the shaft 27 is rotated so that the receiving piece 33
To slide up and down along the guide hole 34, and to rotate the shaft 27 between the spring receiving piece 33 and the sensor arm 17.
25 is provided.

In the input / output circuit diagram of the sequence unit 24 in FIG. 5, 43 is a three-contact alternating changeover switch, 44 is a reverse magnet contact for reversing the reversible motor 26 in the extension direction of the spring 25, and 45 is a forward magnet contact for normal rotation. is there.

The limit switch 31 is installed in the groove 28 of the cam 29,
The switch is set to ON when 30 is fitted, and is set to OFF when it is located outside the groove 28 and outside the cam. Therefore, cam 2
While repeating 4 counts OFF and ON for one rotation of 9, the screw part 32
The spring support piece moves by the length of one pitch of the screw, and the spring 25
Will be expanded and contracted, and for example, from the position of the standard whitening groove 28, m counts (a) forward rotation and stop at the upper white position,
In order to reverse n counts (b) from the standard position and stop at the 8th cutting position, these values of m and n are determined by an actual rice polishing test and stored in a memory for control.

In the rice-polishing resistance adjusting device 5, the sensor arm 17 for detecting the amount of rice-polishing resistance in the rice-polishing room 2 compresses the spring 25 to move the moving amount, and presses the lid 35 provided at the outlet 41 of the rice-polishing room 2 with a pressing rod.
A restraining wire 37 to be restrained as an opening amount for reducing the pressure of 36 and moving it in the opening direction is provided. The presser bar 36
A lid 35 is openably and closably supported by a support rod 38 projecting outwardly from the machine wall 9, and a restraining wire 37 is locked at one end of the holding rod 36.
On the other end side, a pin of the lid 35 is fitted in a hole provided in the rod 36 and loosely locked, and a spring projecting from the machine wall 9 on the lid 35 mounting side from the supporting portion of the support rod 38. 39 support rods
40 is fitted in a hole provided in the support rod 38, and this support rod 40 is wound, and a spring 39 that presses the lid 35 toward the outlet 41 side of the rice polishing chamber 2 is locked, so that the lid 35 is pressed. .

(C) shows the rotation direction of the whitening roll 1.

The operation of the above example will be described.

Start the prime mover of the rice polishing machine, rotate the whitening roll 1, and press the whitening setting standard button 20 on the control panel 42. Until then spring
Reversible motor 26 when 25 is in standard position 26
Does not rotate, but when the spring 25 is in the white position or in the 8 min. Position, the motor 26 reverses until the limit switch 31 counts the groove 28 m times (a), or n times. It rotates normally until it counts (b) and returns to the standard position.

The above-mentioned whitening setting is completed, and the brown rice in the rice polishing tank 14 is used in the rice polishing room 2
When the rice is fed to the rice polishing chamber 2, the brown rice that has entered the rice polishing chamber 2 is fed in, and the spiral portion 18 is fed in the direction of the rice polishing roll 1, and while the rice polishing roll 1 is rotating, the rice contained in the rice polishing chamber 2 is polished by the ridges 19. . Then, the polished rice is transferred to the outlet 41 side while polishing by the pressure continuously fed by the feeding spiral portion 18 and the slight feeding action of the protrusions 19, and the outlet is formed against the pressure of the spring 39 which presses the lid 35. It is to be discharged from 41. When polishing rice grains in the rice polishing room, the rotation direction of the rice polishing roll 1 (c)
The rotational force to be transmitted to the polishing unit 6 which is the rice polishing sensor 3 by the frictional resistance force of the filled grains, and the sensor arm 17 compresses the spring 25.

The milling degree of rice is proportional to the frictional force applied to the rice in the milling room 2 and the friction time, and also the magnitude of the frictional force in the milling room 2 for each milling degree such as white rice, standard and 8 minutes Since the time is almost constant in rice of the same nature,
In order to obtain white rice with a uniform standard whiteness, it is necessary to change the frictional force approximately constant. Therefore, the tension of the spring 25 against the whiteness of standard white, standard, 8 parts, etc. The spring receiving piece 33 is moved up and down to give the initial tension of the spring 25 adapted to the set whiteness to maintain the posture of the sensor arm 17 and the whitening cylinder 6,
When it compresses beyond this initial tension, it is detected that the rice-polishing resistance of the rice-polishing chamber 2 is larger than a predetermined value, so that the lid 35 is locked by the restraining wire 37 whose one end is locked to the sensor arm 17. When the upper part of the presser rod 36 of the above is restrained, the presser rod 36 expands the reference opening degree of the lid 35 independent of the pressure of the white rice discharged from the outlet 41 by using the support portion of the support rod 38 as a fulcrum to facilitate the discharge. Since more white rice is discharged than before, the resistance to rice polishing in the rice polishing chamber 2 is reduced and the sensor arm 17
As the spring 25 moves back to its original position, the holding rod 36 of the lid 35 also returns to its original position, and the rice-polishing resistance of the rice-polishing chamber 2 is restored to the old one and maintained.

In addition, rice has sensory differences in whiteness such as white and standard depending on the region, and the shape resistance depending on the variety, the difference in water content, the hardness and softness of the quality, etc. Standard rice milling resistance to standard whiteness may change due to different standards. In this case, while polishing the rice, change the whiteness change three-point alternate switch 43 to "decrease whiteness" or "increas whiteness" and watch the white rice coming out of the outlet 41 of the rice polishing room 2 to obtain the desired whiteness. Move the cam 29 so that the limit switch 31 is turned on near the adjusted position, and set this as the standard, as shown in FIG.
It is possible to integrally change the whiteness level of the minute.

It should be noted that a plurality of whitening degree buttons 20, 21, 22 may be appropriately provided, and may be controlled to return to the non-setting state by turning off the power switch of the rice polishing apparatus. Further, the spring 25 of the rice polishing resistance adjusting device 5 may be an electric control system such as another piezoelectric element.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front sectional view of a rice polishing machine, FIG. 2 is a front view of a control panel, FIG. 3 is a side sectional view of a rice polishing machine, and FIG. 4 is a cam. Is a plan view, FIG. 5 is an input / output electric circuit diagram, and FIG. 6 is an operation explanation graph. In the figure, reference numeral 1 is a rice polishing roll, 2 is a rice polishing chamber, 3 is a rice polishing sensor, 4 is a whitening setting device, 5 is a rice polishing resistance adjusting device, and 6 is a white polishing tube.

Claims (1)

[Claims] 1. A spring 25 for connecting a rice-polishing sensor 3 which is displaced by a rice-polishing load in a rice-polishing chamber 2 equipped with a rice-polishing roll and a rice-polishing resistance adjusting device 5 to resist the displacement of the rice-polishing sensor 3.
Is provided and the spring pressure of the spring 25 is changed to a large or small amount to configure a whitening degree setting device 4 for changing the rice polishing resistance by the rice polishing resistance adjusting device 5 to a large or small level.
The pressure of the spring 25 by means of the spring receiving shaft 27 can be set in a plurality of large and small stages while rotating the spring receiving shaft 27 forward and backward at a preset angle between each step, and while rotating the spring receiving shaft 27 forward and backward, A rice polishing apparatus provided with a switching means 43 capable of arbitrarily changing the pressure of the spring 25.