JPS6349307Y2 - - Google Patents

Description

[Detailed description of the invention] The rubber rolls provided in the removing section of the huller are worn out as the hulling operation progresses, and the gap between the rubber rolls must be constantly adjusted as the hulling operation progresses. Conventionally, systems have been devised in which the amount of wear on the rubber rolls is directly detected with a sensor, or the load on the rolls is sensed and the gap between the rolls is automatically adjusted accordingly. The changes in the amount of change are minute, and the load is extremely easy to change due to changes in the material of the processed material.In both cases, it is difficult to accurately detect the amount of change, and not only is it impossible to achieve the intended purpose, but the sensing device The structure of is extremely complex. In order to solve this problem, it is conceivable to install a timer and correct the roll gap at regular intervals, but in this case, the operator sets the time limit of the timer at an appropriate time by feeling. However, since the time limit setting is inaccurate, good performance cannot be obtained, and the operation is cumbersome because the operator has to set the time limit each time the quality of the material changes.

The present invention has been made in consideration of the above-mentioned conventional situation and aims to improve it, focusing in particular on the fact that the amount of wear on the rubber roll is proportional to the amount of brown rice actually removed, and provides a de-rolling gap adjustment device that detects the actual flow rate of finished rice in addition to detecting the mixed rice that has passed through the de-rolling roll, and automatically sets the timer limit using a signal proportional to that flow rate. The gap between the rubber rolls is adjusted at each time limit, so that the roll gap is always kept constant.

The structure of the present invention will be explained with reference to an embodiment shown in the drawings. Reference numeral 1 denotes the body of a rice huller;
A detaching section 2 is installed at the upper front part of the machine, and behind the detaching section 2, an inclined swing sorting body 3 is supported so as to be swingable in the longitudinal direction of the machine body. A paddy hopper 4 is attached to the upper part of the removing section 2, and the paddy stored in the paddy hopper 4 in advance is dropped and supplied between the rubber rolls 6 and 6a in the removing section 2.
One of the rubber rolls, the rubber roll 6a, is pivoted on a swinging rod 7 whose base end is swingably supported on one side of the machine body, and is held at the upper end of the swinging rod 7 with a fixing nut. The tip of the adjusting screw 8 is screwed together, and a ratchet wheel 9 with a handle is attached to the base of the adjusting screw 8. Rotation of the ratchet wheel 9 moves the rubber roll 6a, and the rubber roll 6a moves. The opposing gap between 6 and 6a can be freely adjusted. 10 is a ratchet pawl that engages with the ratchet wheel 9, and
The base is connected to a solenoid 11, and the operation of the solenoid 11 allows the ratchet wheel 9 to rotate intermittently.

Reference numeral 12 denotes a paddy receiving plate provided below between the rubber rolls 6 and 6a, the upper surface of which is made of an elastic material, and
It is rotatably supported by a spring 13, and is biased by a spring 13 so that its upper surface is substantially horizontal. 14 is a sensing switch provided below the paddy receiving plate 12,
The sensor switch 14 is configured to turn on when the paddy receiving plate 12 receives the released paddy and is displaced downward.

Reference numeral 15 denotes a mixed rice receiving trough, which is disposed below the paddy receiving plate 12 via a grain board 18.
A spiral 15a is installed inside the machine 5, which communicates with the lower part of a mixed rice elevator 16 installed outside the machine body 1. 17 is a gutter, and a spiral 1 is built in it.
7a faces the opening on one side of the fuselage 1. Reference numeral 19 is an air intake net provided at an inclined opening in front of the mixed rice receiving trough 15, and is adapted to suck in the sorting air, which will be described later. Reference numeral 20 denotes a dust exhaust fan installed at the front of the machine, which forms a suction air path 21 for the debris removed by the rubber rolls 6 and 6a, and the dust is sucked into the dust exhaust fan 20 and taken out of the machine. The rice is collected in the rice trough 17, and the mixed rice is collected in the mixed rice receiving trough 15.
will be collected in

In addition, 22 is a mixed rice passage, and a rocking sorter 3, which will be described later,
receives the mixed rice and transfers it to the mixed rice receiving pipe 1.
The lower end of the passage 22 communicates with the mixed rice receiving trough 15. On the other hand, 23 is a dust suction fan, which is disposed at the rear of the machine, and is connected to a duct 24 that communicates with the upper part of the mixed rice passage 22 and a duct 25 that communicates with the lower part of the finished rice receiving box 33, which will be described later. Dust is sucked in through ducts 24 and 25. The exhaust port of the dust suction fan 23 is connected to a dust passage 26 provided below the fuselage 1.
It is connected to the suction section of the dust removal fan 20 via.

Reference numeral 27 denotes a mixed rice hopper, which is suspended from a mixing rice gutter 16a that protrudes rearward from the upper part of the mixed rice elevator 16, and its bottom opening is connected to the supply gutter 3a provided at the upper part of the swing sorting body 3. I have it coming.

A sorting plate 28 having unevenness is superimposed on the oscillating sorting body 3, and while the mixed rice distributed by the supply gutter 3a flows over it, it is separated into paddy, finished rice, and mixed rice. It is adapted to be transported by receiving bodies 29, 31, and 30. 29 is a paddy receiving body, the sending end of which opens above the paddy hopper 4;
Reference numeral 30 denotes a mixed rice receiving body, the sending end 30a of which faces the upper opening 32a of the communication gutter 32 erected above the mixed rice passage 22, and the sending end 30a of the mixed rice receiving body
0a and the opening 32a are connected and covered by a bellows-shaped hood 32a. Also, 31 is a finished rice receiver,
A discharge port 31a provided at the feeding end portion is inserted into a finished rice receiving box 33 installed above the machine body 1. It is connected and covered with.

Reference numeral 34 denotes an operating plate provided in the finished rice receiving box 33, and a bottom plate 33 provided diagonally below the finished rice discharge port 31a.
In the part facing a, the support shaft 3 provided at the upper part
The spring 3 is pivotably supported around the spring 4a.
4b urges its tip in a direction toward the bottom plate 33a. And the actuating plate 34 is
It rotates in response to the finished rice flowing down from the discharge port 31a via the bottom plate 33a, and the amount of rotation corresponds to the flow rate of the finished rice. Further, at the end of the support shaft 34a, there is a detection device 35 that detects the amount of rotation of the actuating plate 34 and generates a signal proportional to the amount of rotation.
is provided.

Reference numeral 36 denotes a finishing rice gutter, which is provided below the finished rice receiving box 33, and the lower part of the finishing rice gutter 36 communicates with the lower part of the finishing rice elevator 37, and the finished rice is taken out of the machine from the elevator 37. It is becoming more and more common.
Numeral 38 is a small rice gutter installed next to the finishing rice gutter 36, and the lower part thereof is opened laterally, from which small rice is discharged. Reference numeral 39 denotes a finished rice sorting duct, the upper opening of which is adjacent to the rice gutter opening, and the lower part communicating with the duct 25. 40
is a grain receiving plate provided on the partition wall between the finishing rice gutter 36 and the small rice gutter 38, and is tilted so as to receive the grains flowing down along the operating plate 34 and cause the finished rice to flow down in the direction of the finishing rice gutter 36. It is set up. Reference numeral 41 denotes a control box connected to a suitable power source, which is installed near the removal part 2, and inside the control box 41, as shown in FIG.
It has built-in timers _T1 , _T2 , and _T3 consisting of ICs, etc., and a control box 41 and the solenoid 1.
1. A lead wire 42 is wired between the sensing switch 14 and the detection device 35.

Fig. 4 is a timing explanatory diagram showing these relationships. In the figure, when the sensing switch 14 is turned on due to the lowering of the paddy receiving plate 12, the timer T3 is activated and the timer _T3 is activated for a preset certain period of time. (about 1 minute) later, the timer T ₁ turns on and at the same time the timer is activated by the potential difference detected by the detection device 35.
The time limit for T ₁ is automatically set, and timer T ₁ turns OFF after the set time, and at the same time, timer T ₂ turns ON.
Then, the solenoid 11 is activated to rotate the ratchet wheel 9, the timer _T2 is turned off after a preset period of time (approximately 3 seconds), and the solenoid 11 is also turned off at the same time. Timer T ₂ OFF
At the same time, timer T ₁ starts counting again.
The time limit of the timer T ₁ at this time is automatically set depending on the magnitude of the signal (indicating the magnitude of the electric position) issued by the detection device 35 when the timer T ₂ is turned off. In other words, the first time limit of timer T ₁ is set by the detection value of the detection device when timer T ₃ turns OFF, and from then on, timer T ₂
It is set based on the detection value of the detection device when the switch is turned OFF. When the amount of finished rice flowing down from the discharge port 31a is large, the time limit of the timer _T1 is set short, and on the other hand, when the flow rate is small, the time limit is set long.

The time limit of the timer _T1 is set to about 5 to 10 minutes, and the rubber roll is set to move about 0.03 mm by the operation of the solenoid 11.

Further, the timer _T3 is provided to prevent the time limit of the timer _T1 from being set due to an unstable detection value from the detection device 35 at the beginning of operation. In other words,
At the beginning of operation, the amount of finished rice is unstable, so use a timer.
Detection device 35 after a certain period of time preset at T ₃
The first time limit of the timer _T1 is set appropriately based on the signal from the detector, that is, the detected value of the detection device when the amount of finished rice sorted by the oscillating sorter 3 is almost stable.

The present invention is constructed as described above, and when the paddy is supplied to the paddy hopper 4, the paddy is removed between the rubber rolls 6 and 6a of the removal section 2, and the mixed rice sorted in the suction air path 21 is transferred to the mixed rice receiver. Gutter 15, mixed rice elevator 16
The rice is further transferred to the swinging sorter 3, where it is separated into mixed paddy rice and finished rice. The paddy is then returned to the removing section 2, and the mixed rice is again supplied to the swinging sorter 3 where it is subjected to removing and sorting actions, respectively, but the finished rice is wind sorted and then discharged outside the machine. is the same as a conventional rice huller.

In the above series of rice hulling operations, the rubber roll 6,
The paddy receiving plate 12 located below 6a is pushed by the removed material and rotates, and in conjunction with this, the sensing switch 14 is turned on.
, the control box 41 connects the lead wire 42
The control action is started by applying current through the terminal. The finished rice sorted by the oscillating sorter 3 is transferred in an almost stable state by the finished rice receiver 31,
When it is discharged from the discharge port 31a, guided by the bottom plate 33a and hits the actuating plate 34, the actuating plate 34 rotates downward against the spring 34b due to the pressure.
A detection device 35 provided on the actuating plate support shaft 34a detects the amount of rotation and sends a signal commensurate with the amount to the control box 41. In response to this, the control box 41 sets a time limit for the operation of the solenoid 11, and the solenoid 11 is activated every time the solenoid 11 is activated.The ratchet wheel 9 is rotated each time, and the roll gap is automatically adjusted. If the flow rate of finished rice changes, the operating time period changes accordingly. Furthermore, if the conditions of the paddy, such as the type of paddy, moisture content, and ratio of rice grains mixed in, differ, the amount of wear on the rubber roll will naturally vary. The above conditions differ depending on the different varieties of rice cultivated in each field or differences in field conditions, and as long as materials from the same field are processed, there is almost no change in the amount of finished rice per hour. , solenoid 1
Although it is not necessary to change the first operating time limit, if materials from different fields are to be processed subsequently, the material conditions will naturally be different and it will be necessary to change the operating time limit. At that time, in the present invention, when the amount of rotation of the actuating plate 34 changes and the detection device 35 detects this, the operating time limit of the solenoid 11 is automatically changed to a predetermined time limit that matches the conditions of the paddy. The roll gap can be adjusted from time to time.

The finished rice flows down along the operating plate 34 in the finished rice receiving box 33, falls onto the receiving plate 40, passes through the finished rice trough 36, and is taken out of the machine by the finished rice elevator 37.
3b, and the duct 39 of the dust suction fan 23 faces the upper openings of the finished rice trough 36 and the small rice trough 38, so that the small rice in the finished rice flowing down is sucked in and winnowed, and falls into the small rice trough 38, and dust generated on the receiver 31 etc. is sucked into the duct 39. At the same time,
Between the mixed rice opening 30a and the communication gutter opening 32a,
Since it is completely sealed by the hood 32b and the side of the lower end of the communicating trough 32 communicates with the duct 24, dust contained in the mixed rice and dust floating on the oscillating separator are sucked and removed.

In this way, the present invention connects the derolling gap adjustment mechanism installed in the derolling section of the huller to the sensing switch and timer mechanism located at the bottom of the derolling section, and adjusts the derolling gap at each set time of the timer. The detection device is configured to adjust the gap, and is provided with a detection device for detecting the flow rate of the finished rice and emitting a signal proportional to the flow rate in the flow down gutter of the finished rice sorted and collected by the oscillating sorter. A de-rolling gap adjustment device for a rice huller, characterized in that the time limit of the timer is automatically set according to a signal of Since it is operated by a control mechanism that automatically sets a time limit based on a signal proportional to the flow rate, the gap between the rubber rolls is automatically adjusted according to the flow rate of finished rice, and the paddy Even if the type of rubber roll, moisture content, rice bran mixture ratio, etc. are different, it is automatically adjusted accordingly, so it is possible to detect the amount of wear on the rubber roll and the load applied to the roll, just like in the past. Although it is possible to adjust the roll gap extremely accurately and minutely compared to conventional rollers, there is no need for the operator to manually adjust the roll gap based on his or her senses, and there is no need to manually adjust the roll gap. It is more accurate and less cumbersome to operate than those that are set to a fixed time, so even the elderly, women and girls can easily operate it without fear of erroneous operation. Furthermore, since the wear of the rubber rolls is caused by the resistance when removing the paddy, the amount of wear increases in proportion to the amount of brown rice that is actually removed, but this invention specifically sets a time limit for the operation of the solenoid. In doing so, only the amount of finished rice was measured, so the amount of wear could be detected extremely accurately, and a highly accurate roll gap automatic adjustment device could be obtained.

[Brief explanation of the drawing]

The drawings show a rice huller equipped with the device of the present invention, in which Fig. 1 is an overall side view with the main parts cut away, Fig. 2 is a side sectional view of the main parts, and Fig. 3 is a block diagram. , FIG. 4 is a timing explanatory diagram. 9... Ratchet wheel, 11... Solenoid, 14... Sensing switch, 34... Operating plate, 3
5...Detection device, 41...Control box.

Claims (1)

[Scope of utility model registration request] The unrolling gap adjustment mechanism installed in the unrolling section of the huller is connected to a sensing switch placed at the bottom of the unrolling mechanism and a timer mechanism, and the gap between unrolling is adjusted at each set time of the timer. At the same time, a detection device that detects the flow rate of the finished rice and emits a signal proportional to the flow rate is installed in the drain of the finished rice sorted and collected by the oscillating sorter, and the timer is set based on the signal from the detection device. 1. A deroll gap adjustment device for a rice huller, characterized in that it is configured to automatically set the following: