JPH034355Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic release control device for a rice huller.

In other words, in a hulling machine configured so that one of the two derollers can be moved and adjusted freely by a control cylinder, and the control cylinder is adjusted and operated by a derolling rate detection sensor in the sorting section to automatically adjust the depressurization, conventionally, the depressurization is automatically adjusted. Since the control cylinder is operated as detected by the rate detection sensor, there is a drawback that the roll gap and depressurization will be adjusted indefinitely if the difference in circumferential speed between the two derollers disappears or if there is an abnormality in the detection part. Ta.

The present invention solves these shortcomings by preventing the depressurization from increasing more than necessary even in such abnormal situations, and by issuing an alarm to notify the user of the abnormality and ensuring that the depressurization is automatically adjusted properly at all times. The present invention is intended to provide a method that allows the grains and other parts to be operated satisfactorily without damage to the grains or other parts, and to be carried out suitably.

Next, the embodiment shown in the drawings will be described.

Inside the removing part A installed below the tank 9, both the removing rolls 1 and 2 are mounted on an axis so as to have a difference in circumferential speed, and one removing roll 2 is located at the center of an arm 11 whose lower end is pivoted 10. an air or hydraulic control cylinder 3 that is pivoted at the center and pivoted at the middle section 12;
The tip of the piston rod 13 that extends further is connected to the upper part of the arm 11, and a sorting section B equipped with a sorting shelf 14 and a suction dust remover 15 is installed below the removing section A, so that it has a conventional structure. Configure similarly.

A pressure reducing valve 5 whose pressure can be controlled by rotating an adjustment lever 17 is connected and interposed in the middle of a pipe 16 that supplies air or hydraulic pressure to the control cylinder 3, and an upper limit switch 6 and a lower limit switch 7 are provided on both sides. The lower part of the adjusting lever 17 is screwed into a threaded rod 19 extending from the control motor 8, which is rotatably installed on the bracket 18 of the machine body, so that the adjusting lever 17 can come into contact with the sorting part B. An evasion rate detection sensor 4 is installed above the lower side of the sorting shelf 14 in , and the control cylinder 3, both switches 6, 7, control motor 8 and evasion rate detection sensor 4 are connected to the control circuit of the control panel 20, respectively. However, when the set escape rate cannot be obtained with the adjustment lever 17 in contact with either of the switches 6 and 7, the alarm 21 is installed and configured to operate.

Therefore, the state of the removed rice sorted in the sorting section B is detected by the removal rate detection sensor 4, and the control motor 8 is driven by the detection, and the pressure reducing valve 5 is controlled by rotating the adjustment lever 17. The control cylinder 3 automatically controls the depressurization of the roll release 2.

In that case, even if the control motor 8 continues to be driven when the circumferential speed difference between the rolls disappears or when there is an abnormality in the detection section, if the adjustment lever 17 comes into contact with either the upper or lower limit switch 6 or 7, the motor 8 is stopped, and the pressure reducing valve 5 is no longer operated or lowered, and the operation of the control cylinder 3 is stopped. When the set escape rate cannot be obtained with the adjustment lever 17 in contact with either of the upper and lower limit switches 6 and 7, the alarm 21 is activated to issue an alarm and notify the user of an abnormality.

As described above, the present invention provides a rice husking machine in which one of the two derollers is movable and adjustable by a control cylinder, and the depressurization is automatically adjusted by adjusting the control cylinder using the derolling rate detection sensor in the sorting section. , a pressure reducing valve connected in communication with the control cylinder has upper and lower limits so that it can be operated by a control motor;
Moreover, the alarm is configured to operate when the set escape rate cannot be obtained with the pressure reducing valve adjustment lever in contact with either the upper limit switch or the lower limit switch that limit the upper and lower limits of the pressure reducing valve. Even when the peripheral speed difference between the two release rolls disappears or when there is an abnormality in the detection part, it is possible to prevent the release pressure from increasing more than necessary, and the pressure release can always be automatically and reliably adjusted.
Not only can grains and other parts be properly operated without being damaged, but the escape rate can be set while the pressure reducing valve adjustment lever is in contact with either the upper limit switch or lower limit switch that limits the upper and lower limits of the pressure reducing valve. When this cannot be achieved, the alarm is activated to issue an alarm and notify the user of the abnormality, so the present invention has the advantage that it can be implemented more favorably.

[Brief explanation of the drawing]

The drawing shows a side view of the main parts of an embodiment of the present invention. 1, 2...Derolling, 3...Control cylinder, B...Sorting section, 4...Derolling rate detection sensor,
5...Pressure reducing valve, 6...Upper limit switch, 7
... lower limit switch, 8 ... control motor, 17 ... adjustment lever, 21 ... alarm.

Claims (1)

[Scope of utility model registration request] A cylinder 3 controls one of the two de-rolls 1 and 2.
In the rice husking machine, the depressurization is dynamically adjusted by adjusting the control cylinder 3 using the evaporation rate detection sensor 4 of the sorting section B, and the pressure reducing valve is connected to the control cylinder 3. 5 has upper and lower limits so that it can be actuated by a control motor 8, and an adjustment lever 17 of the pressure reducing valve 5 is attached to either an upper limit switch 6 or a lower limit switch 7 that limits the upper and lower limits of the pressure reducing valve 5. 1. An automatic dehulling control device for a huller, characterized in that an alarm 21 is activated when a predetermined dehulling rate cannot be obtained in a state in which the dehulling ratio is in contact with the rice huller.