JPH064141B2 - Hulled rice polishing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a so-called hulled rice polishing machine for removing unhulled rice to brown rice, or unpolished brown rice to white rice, or continuously obtaining white rice from hull. It is a thing.

2. Description of the Related Art Since this type of conventional hulled rice polishing machine is provided with an opening / closing device for a paddy shutter provided at a discharge port of a paddy tank and a starting device for a removing fan for hulling, they are provided independently of each other. Even if the rotation speed does not reach the specified speed after the de-puffing fan is started, the paddy shutter can be opened, and at that time, the paddy in the paddy tank fills the de-puffing fan through the discharge port. There is a risk that the removal action will be disabled.

Although a malfunction prevention device for avoiding such a phenomenon has been considered (see Japanese Utility Model Publication No. 60-27455), the structure and operation of the prevention device are troublesome, and it is easy to operate it. Absent.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The object of the present invention is to solve the problems of the conventional rice hulling and polishing machine,
At the start of hulling work, the shutter for paddy is not opened unnecessarily before the number of rotations of the stripping fan reaches a predetermined speed, and the paddy fan is filled with paddy and its operation cannot be performed. It is an object of the present invention to prevent the operation from being performed and to easily obtain the operation by a single operation of pressing a switch.

Means for Solving the Problems The hulling machine of the present invention has a belt with a tension pulley wound around a drive pulley, a removing fan pulley and a rice husk fan pulley which are interlocked with a rice polishing device directly connected to a main motor, and a brown rice shutter of a brown rice tank and , Each shutter of the paddy shutter of the paddy tank is coupled to the tension pulley via a switching lever, an operation delay device is interposed between the switching lever and the paddy shutter, and the switching lever is further rocked. A geared motor is connected to the drive shaft by a worm and a worm wheel, a position detection cam is fixed to the swing shaft, and a pair of limit switches are arranged around the position detection cam at a distance from each other. The hulling, stop, and rice polishing switches are electrically connected via the control unit with limit switch described above. It is a thing.

Operation When hulling and rice polishing are performed by the grain huller of the present invention, first, the power switch is pressed to rotate the main motor to rotate the rice mill, and at the same time, to rotate the drive pulley interlocking with this. At this time, since the tension pulley is not pressure-bonded to the belt wound around the drive pulley, the take-off pulley, and the suction pressure feeding fan pulley, the belt is loosened and thus idles with respect to the belt even if the drive pulley rotates. The removal fan pulley and suction pump fan pulley do not rotate.

In this state, supply the paddy into the paddy tank, press the paddy switch and rotate the geared motor to move the switching lever from the neutral position to the tension pulley by a predetermined angle in the direction of crimping the tension pulley to the belt. When oscillated, the belt is tensioned during that time to bring the removal fan pulley and the rice husk fan pulley to predetermined rotational speeds, respectively. At this time, the paddy shutter connected to the switching lever does not open because it is stopped by the action of the rocking delay device interposed therebetween. When the switching lever is subsequently swung in the same direction, the action of the delay device is limited, and when the swing is further continued, the paddy shutter is opened.

At this time, the paddy in the paddy tank is fed through the opening to the rotating de-puffing fan, and by that action, it is put into brown rice and fed into the brown rice tank, and the chaff generated at that time is the chaff. It is sucked by a fan, discharged from the rice husk outlet to the outside of the machine, and stored in a rice husk bag.

After the rice in the paddy tank becomes brown rice and is transferred to the brown rice tank in this way, the rice-polishing switch is pressed to rotate the switching lever in the direction opposite to the swinging direction by the rotation of the gear motor. When the paddle shutter moves to the original neutral position, the paddy shutter closes the paddy tank, loosens the tension of the tension pulley, and stops the rotation of the take-off fan pulley and the paddy fan pulley. During this time, the above-mentioned drive pulley and the rice-polishing device working together with it are constantly rotating.

Then, when the switching lever is further swung in the same direction, the brown rice shutter of the brown rice tank opens and the brown rice in it is supplied to the rice polishing device to start the rice polishing, and the polished rice after the rice polishing exits the machine from the rice polishing outlet. Is discharged.

Embodiments Embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 8 to FIG. 8, the main motor 1, brown rice tank 2,
Casing for each of the rice polishing device 3, rice bran fan 4, rice hull tank 5, dewaxing fan 6, rice husk fan 7, and wind selecting device 8.
Built in 10 and equipped with a hulling switch 11, a stop switch 12, and a rice-polishing switch 13 on the upper surface of the casing 10, and pilot lamps 11a, 12a, 13a which are turned on in synchronization with the respective switches. A rice bran bag 14 is provided on the side surface of the casing 10, and a cyclone 15 and a rice husk bag 16 connected to the cyclone 15 are provided on the rear side surface thereof.

Further, the rice milling apparatus 3 is directly connected to the rotary shaft 9 of the main motor 1, the drive pulley 17 is fixed, and the rotary shaft 19 of the removing fan 6 is fixed.
The fan pulley 18 is fixed to the rotary shaft of the rice husk fan 7
Fix the rice husk fan pulley 21 to 20.

A belt 22 is wound around the drive pulley 17, the take-off fan pulley 18, and the hull suction fan pulley 21, and the tension pulley 25 is brought into contact with the belt 22, and the tension pulley 25 is swung about the shaft 23. It is provided at the tip of a freely swinging arm 24, and one end of a tension pulley wire 27 and a return spring are attached to the swinging arm 24.
26, a switching lever 38, which is connected to the other end of the wire 27 via a tension pulley wire terminal 56 with a long hole 59 and a pin 63, is provided with a switching lever 38 around the swing shaft 40.
By swinging in the 38 direction or in the opposite direction, the tension pulley 25 is crimped or separated from the belt 22, respectively, and the rice husk fan pulley 21 and the removing fan pulley 18 are rotated or stopped. To do.

Further, one end of a paddy shutter wire 32 and a return spring 33 are connected to a paddy shutter 31 provided at the outlet 30 of the paddy tank 5, and the other end of the paddy shutter wire 32 is connected to the tip of the swing delay lever 34. Then, when the lever 34 is rotated in the direction of arrow A34, the paddy shutter 31 is opened, and when it is rotated in the opposite direction, the elastic force of the return spring 33 slides the paddy shutter 31 to close the outlet 30.

At this time, the swing delay lever 34 is rotated by the switching lever.
38 is rotated about the swing shaft 40 in the direction of arrow A38, and the engaging portion 28 at the upper end of the lever 34 is engaged with the engaged portion 34a of the lever 34.
It does not rotate until it engages with, but it rotates after it engages.

Next, a brown rice shutter 36 provided at the outlet 35 of the brown rice tank 2
To one end of the brown rice shutter wire 47 and the return spring 37, and the other end of the brown rice shutter wire 47 is formed into a long hole.
The brown rice shutter 36 is attached to the lower end of the switching lever 38 via the terminal 65 for brown rice shutter with 66 and the pin 64, and when the lever 38 is rotated in the direction opposite to the arrow A38 direction, the brown rice shutter 36 is opened and rotated in the arrow A38 direction. When you close it with the elasticity of the return spring 37.

Further, the swing shaft 40 of the switching lever 38 is shown in FIGS.
As shown in the figure, a gear motor 41 is connected by a worm 42 and a worm wheel 43, a position detecting cam 44 is fixed to the swing shaft 40, and the circumference of the position detecting cam 44 is circled around each other as shown in FIG. A hulling limit switch 45 and a rice-polishing limit switch 46 are arranged at an interval c above, and further, as shown in FIG. 6, the girder motor 41, the hulling switch 11, the stop switch 12, and the rice-polishing switch.
13 is electrically connected via the control unit 50 connected to the limit switches 45 and 46 described above and the changeover switches 51 and 52.

In the present invention, when hulling is performed, first, a power switch (not shown) is turned on to rotate the main motor 1 in advance, the hulls 53 are housed in the hull tank 5, and then the hulls 53 are stored. By turning on the hulling switch 11 shown in FIG. 5, the gear motor 41 is rotated, and the rotation causes the worm 42, the worm wheel 43, and the swing shaft 40 to rotate, and the switching lever 38 is moved around the swing shaft 40 in the direction of arrow A38. Rotate,
When the engaging portion 28 formed on the switching lever 38 is rotated until just before engaging with the engaged portion 34a of the delay lever 34, the dephasing fan pulley 18 and the rice husk fan pulley 21 start rotating as described above due to the operation during this period. Reach a predetermined number of rotations.

When the switching lever 38 continues to rotate, the engaging portion 28
Engages with the engaged portion 34a of the delay lever 34, and the delay lever 3
4 is rotated in the direction of arrow A34 to move it from the position shown by the solid line in FIG. 2 to the position shown by the chain line.

At the same time, the rotation of the position detection cam 44 fixed to the swing shaft 40 actuates the hulling limit switch 45 to stop the geared motor 41.

During this time, the paddy shutter 31 is opened as described above,
The paddy 53 in the paddy tank 5 is supplied to the spinning removal fan 6 which is rotating at the above-mentioned predetermined number of rotations to remove it. The debranched brown rice and rice husks are passed through the flip-up duct 6a to be delayed by the wind selecting device 8, where the brown rice and rice husks are wind-selected, and one of the brown rices is put into the brown rice tank 2 through the brown rice discharge port 8a. The
The other rice husk is sucked through the duct 7a by the suction force of the rice husk fan 7 rotated by the above-mentioned rice husk fan pulley 21 and reaches the cyclone 15 through the discharge duct 7b, where it is divided into air and rice husks. The rice husks are contained in the rice husk bag 16.

When the hulling operation is completed in this way, pressing the stop switch 12 causes the control unit 50 shown in FIG. 6 to operate to rotate the geared motor 41 in the opposite direction to that described above, so that the switching lever 38 is moved to the position shown by the chain line 38b in FIG. Since it becomes a neutral position from the solid line, the delay lever 34 is first set in the return spring in the first half.
The elasticity of 33 returns the position of the chain line 38b to the position of the solid line, and in the latter half, that is, the switching lever 38 of FIG.
During the rotation from a to the neutral position of the solid line, the tension pulley 25 is relaxed by the elastic force of the return spring 26 against the belt 22, and the rotation of the de-puffing fan pulley 18 and the rice husk fan pulley 21 is stopped and the hulling is performed. Is to end.

Next, the rice-polishing switch 13 is pushed to rotate the switching lever 38 in the direction opposite to the arrow A38 direction by the rotation of the gard motor 41, and the position detecting cam 44 fixed to the swing shaft 40 operates the rice-polishing limit switch 46. , Geared motor
41 stops its rotation and the switching lever 38 stops at that position.

During this time, the belt 22 is left loose and the brown rice shutter 36 is opened through the brown rice shutter wire 47, and the brown rice 54 in the brown rice tank 2 is supplied to the inside of the rice polishing apparatus 3 which is being rotated by the main motor 1. Then, the milled rice obtained at that time is discharged from the outlet 55, and the rice bran is stored in the rice bran bag 14 on the side of the machine by the suction force and the discharging force of the rice bran fan 4, and the stop switch 12 is pushed after the rice polishing. This pushes the geared motor 41 in the reverse direction and rotates the switching lever 38 in the direction of arrow A38 to return it to the original neutral state, thus ending the rice polishing.

The present invention has been described above with reference to the embodiments shown in FIGS. 1 to 8. However, the present invention is not limited to the embodiments, and is carried out by changing to another structure or adding another structure within the scope of the gist of the present invention. It is also possible to do so. For example, instead of directly connecting the main motor 1 to the main shaft of the rice polishing apparatus 3 as shown in FIG. 1, a driving pulley 57 is fixed to the rotary shaft 9 of the main motor 1 as shown in FIG. A driving belt 58 may be wound between the driving pulley 17 and the rotary shaft 9 of the main motor 1 and the driving pulley 57 may be directly connected to the spindle of the rice polishing apparatus 3 as shown in FIG. It does not matter if the driving belt 58 is wound around the drive belt 17 and the driving pulley 17 is always rotated by the main motor 1.

Further, instead of providing the delay lever 34 of the above embodiment and connecting the paddle shutter wire 32 thereto, a pin 62 is fixed to the switching lever 38 as shown in FIG. 11, and one end of the paddy shutter wire 32 is attached to the pin 62. Slidably fitted in the long hole 60 of the paddy shutter wire terminal 61 connected to the switch lever.
While the 38 is rotating from the position of the solid line in the neutral state to the position of the chain line 38a, the pin 62 slides in the long hole 60, and the paddy shutter wire 32 is stopped at the normal position. It is also possible to open the paddy shutter 31 by pulling the paddy shutter wire 32 in the direction of arrow A32 while the switching lever 38 rotates from the position of the chain line 38a to the position of the chain line 38b.

EFFECTS OF THE INVENTION Since the present invention is as described above, there is a problem with the conventional hulling rice polishing machine, that is, when the hulling work is started, the shutter for hulling is carelessly performed before the removal fan reaches a predetermined rotation speed. Open
It is possible to prevent the depudding fan from being clogged with paddy and disabling its operation. Further, since the geared motor and hulling, stop, and the rice-polishing switch are electrically connected through the control unit with the limit switch, only by pushing the desired work switch, the hulling work, the rice-polishing work, Alternatively, the stop can be surely performed. Therefore, unlike the conventional example, it is not necessary to switch the lever by force, and the operation can be performed with one finger, so that the operation is extremely simple and reliable as compared with the conventional example. In particular, since it becomes possible for an old man and a woman to operate it easily, this device can be operated efficiently.

[Brief description of drawings]

The attached drawings show an embodiment of the present invention, FIG. 1 is a side view of a main part of the present invention, FIG. 2 is an enlarged side view of a part of FIG.
FIG. 3 is a right side view of FIG. 2, FIG. 4 is a detailed side view of a portion of FIG. 1, and FIG. 5A is a view of the opening degree of the paddy shutter with respect to the angular displacement of the switching lever or the time after the start of swinging. Fig. 5B is a diagram showing the displacement of the tension pulley during crimping with respect to the angular displacement of the switching lever or the time after the start of swinging. Fig. 6 is an electric circuit diagram of this device. Fig. 7 is a diagram of the present invention. Fig. 8 is a perspective view of a hulling rice polishing machine, Fig. 8 is an enlarged longitudinal sectional view thereof, Figs. 9 and 10 are side views of another embodiment in a part of Fig. 1, and Fig. 11 is an embodiment in another part. It is a side view of an example. 1 ... Main motor 2 ... Brown rice tank 3 ... Rice milling device 4 ... Rice bran fan 5 ... Rice tank 6 ... Drop fan 7 ... Rice husk fan 17 ... Drive pulley 18 ... Drop fan pulley 21 ... Rice husk fan pulley 22 ... Belt 24 ... Swing Arm 25 ... Tension pulley 31 ... Paddy shutter 34 ... Delay lever 36 ... Brown rice shutter 38 ... Switching lever 41 ... Gear motor

Claims (2)

[Claims] 1. A belt with a tension pulley is wound around a drive pulley, a decapsulation fan pulley and a rice husk fan pulley which are interlocked with a rice milling machine equipped with a main motor, and a brown rice shutter of a brown rice tank and a paddy shutter of a paddy tank. Each of them is connected to the tension pulley via a switching lever so as to be interlockable, a swing delay device is interposed between the switching lever and the paddy shutter, and a worm motor and a worm are provided on a swing shaft of the switching lever. The position detection cam is fixed to the swing shaft by connecting with a wheel, and a pair of limit switches are arranged around the position detection cam with a space between each other, and further, the geared motor and the hulling, stopping, and rice polishing A hulled rice polishing machine characterized in that a switch is electrically connected through a control unit provided with the limit switch. 2. The hulled rice polishing machine according to claim 1, wherein the main motor is directly connected to the rice polishing machine.