JPS6140353Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improvements in a cylindrical rice husk crusher.

As shown in Fig. 1, the cylindrical rice husk crushing device has a crushing cylinder that is cylindrical and long in the axial direction, and has a charging port 12 at one end of the peripheral wall 1a and a discharge port 13 at the other end. 1 is supported on a base 2, and the crushing cylinder 1 is
A rotating shaft 3 along the axis of the crushing barrel 1 is provided in the inner cavity of the crushing barrel 1.
are coaxially arranged with their axes aligned, and their front and rear shaft ends 30, 30 are supported via bearings on bearing support members 31 provided at both ends of the crushing barrel 1, and their rotation is controlled by As shown in FIG. 2, a large number of straight plate-shaped feed plates 33 are arranged around the entire length of the shaft 3 at predetermined intervals in the axial direction.
The straight plate-shaped feeding plates 33 are installed so as to project radially from the charging port 12, and are installed so as to be inclined in a direction in which the rice husks charged from the charging port 12 are rotated and sent to the discharge port 13 side. On the inner circumferential surface of the peripheral wall 1a of the crushing drum 1 on the side closer to the discharge port 13, a large number of prismatic crushing blades 5 that protrude short toward the rotating shaft 3 are installed in the axial direction of the feed plates 33. arranged and fixedly installed within the interval, and further,
A straight plate-shaped feed-back plate 34 inclined in the opposite direction to the feed plate 33 is radially attached to the end of the rotating shaft 3 on the discharge port 13 side, and the feed-back plate 34 is radially attached to the end of the rotating shaft 3 on the discharge port 13 side. The charged rice husks are sequentially fed toward the end of the crushing barrel 1 on the side of the discharge port 13 by the feed plates 33, and then sent back by the feed back plates 34 to gradually compress the rice husks. This is a type of material that is crushed by being rubbed against each other under pressure.

In this type of rice husk crushing device, the feed plate 33 provided on the circumferential surface of the rotating shaft 3 has a straight plate shape and does not have a special blade part.
Further, the breaking blade 5 fixedly installed on the inner surface of the peripheral wall 1a of the crushing barrel 1 is a breaking body that is a prismatic bar with no blade, and moreover, the rotating shaft 3 can be moved very slowly. Since it can be rotated at a speed of
The big advantage is that there are no wearing parts, but
The problem is that efficiency is not very high and it is extremely difficult to increase efficiency.

In other words, in order to increase efficiency, it seems that increasing the amount of rice husks supplied from the charging port 12 and increasing the rotational speed of the rotating shaft 3 is sufficient, but even if a large number of rice husks are fed into the charging port 12, the The rice husks are not sent to the discharge port 13 side of the inner cavity of the crushing barrel 1, but are instead fed into the charging port 12.
Also, even if the rotation speed of the rotating shaft 3 is increased at the same time, the rotating shaft 3
The feed plates 33 provided on the circumferential surface of the rice husks slip against the rice husks, resulting in a failure to improve the efficiency of crushing even though the required horsepower is increased.

The present invention has been developed to solve these problems, and is a new method that improves the feeding of rice husks from the charging port into the crushing barrel and improves the efficiency of compressing and crushing rice husks. The purpose is to provide a means to do so.

Therefore, the present invention is based on the results obtained by repeating various experiments for the above-mentioned purpose.

That is, this type of rice husk crushing device was originally equipped with a screw in which the feed blades continued in a spiral in the portion of the crushing barrel facing the charging port, as described in Japanese Utility Model Application Publication No. 121349/1983. However, with this method, when the rice husks become clogged in a forest in the crushing shell, the rice husks that have entered between the feed blades of the screw out of the jammed rice husks are exposed to the inner circumferential surface of the crushing shell 1. The rice husks on the outer periphery that come into contact with the screw are left behind, and the rice husks rotate together with the screw, resulting in almost no pushing action, and as a result, the feeding of rice husks from the charging port is extremely reduced. Therefore, this screw is removed and the feed plate 33 is placed at a position facing the charging port 12 as shown in FIG. When the breaking blades 5 fixedly installed on the inner peripheral surface of the peripheral wall 1a of the crushing barrel 1 are provided on a cross section crossing the charging port 12 and in the vicinity thereof, the destruction blades 5 can be used to destroy rice husks when charging the rice husks from the charging port 12. The breaking blade 5 was not provided in this area because it would obstruct the flow of the water.

However, at this location, there is a breaking blade 5 that protrudes short toward the rotating shaft 3 at a length such that the protruding end overlaps the rotation locus of the rotating end of the feed plate 33 when viewed from the axial direction of the crushing cylinder 1. When conducting an experiment, the rice husks introduced from the charging port 12 were stuck to the breaking blades 5 provided at this location. The flow of rice husks into the crushing barrel 1 should have been poor, but instead the flow of rice husks into the crushing shell 1 had become better, resulting in the above-mentioned first problem.
This is based on the fact that efficiency has increased by about 50% compared to the previous model shown in the figure. This has already flowed into the crushing cylinder 1 from the charging port 12 and is compressed by the feed plate 33 and pushed toward the discharge port 13, so that it becomes a columnar shape that is tightly packed inside the crushing cylinder 1. When the rice husks, which are designed to rotate together with the feed plates 33, come into contact with the breaking blade 5, the contacting portion collapses and is pulled in the direction of rotation of the feed plates 33. This is due to the fact that the rice husk layer covering the rice husks that are thrown in from the rice husks and rotating inside the crushing barrel 1 in the aforementioned cylindrical shape is drawn into the flow of the rice husks. thought about.

For this reason, in the present invention, as a means to achieve the above-mentioned object, a cylindrical shape long in the axial direction is supported on a base, and a charging port is provided at one end of the peripheral wall of the cylinder, and a discharge port is provided at the other end. A rotary shaft along the axial center line of the crushing drum is disposed in the inner cavity of the crushing drum, and is supported by bearing support members provided at both axial ends of the crushing drum. On the circumferential surface, a large number of feeding plates formed in the shape of a straight plate are arranged at predetermined intervals in the axial direction in a range from the end on the charging port side to the discharge port to feed the rice husks toward the discharge port side. installed so as to be inclined in the direction and protrude in the radial direction, and on the side of the inner circumferential surface of the peripheral wall of the crushing cylinder that approaches the discharge port,
A large number of destructive blades that protrude shortly toward the rotating shaft are fixedly provided at portions located within an interval in the axial direction of the feeding plate, and the feeding plate is provided at an end of the rotating shaft on the discharge port side. In a rice husk crushing device in which a straight plate-shaped sending back plate inclined in the opposite direction is attached so as to protrude in the radial direction, the charging port provided in the peripheral wall of the crushing cylinder is located on the inner circumferential surface of the peripheral wall of the crushing cylinder. A breaking blade that protrudes short toward the rotational axis at a portion crossing the crushing cylinder and a portion adjacent thereto, the protruding end of which overlaps the rotation locus of the rotational end of the feed plate when viewed from the axial direction of the crushing cylinder. The present invention proposes a cylindrical rice husk crushing device characterized in that a rice husk crushing device is arranged and fixed within the interval of the above-mentioned feed plate attached to its rotating shaft.

Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings as in the previous means are used for components having the same effect.

In FIGS. 3 to 7, reference numeral 1 denotes a cylindrical crushing barrel formed to be elongated in the axial direction, both axial ends of which are closed by cover plates 10 and 11, and the axial direction of the circumferential wall 1a of the barrel 1 is closed. A charging port 12 is provided on the top side at one end, and a discharge port 1 is provided on the side surface at the other end in the axial direction.
3 is provided. And, the crushing cylinder 1 is
It is supported on bases 2, 2. In the example, the diameter (outer diameter) of the crushing drum 1 is 320 mm and the length is 1600 mm.

Reference numeral 3 denotes a rotating shaft, which is arranged at the axial center of the crushing cylinder 1 and along the axial center line of the crushing cylinder 1, and has both ends 30, 30 attached to both ends of the crushing cylinder 1. It is pivotally supported by bearing support members 31, 31. The rotating shaft 3 is driven to rotate by transmitting power to a motor via a speed reducer at the end 30 on the side where the charging port 12 is provided. In addition, the motor used is 20 horsepower to 15 horsepower, and the rotational speed of the rotating shaft 3, which is rotated by being decelerated by the reducer, is:
The speed is slow, about 10 times per minute.

33... is a feed plate attached radially to the circumferential surface of the rotary shaft 3, and is formed into a straight plate shape without twisting, and as shown in FIG. The rotating shaft 3 is placed at each part at a predetermined interval (220 mm in the embodiment) in the axial direction of the rotating shaft 3 in a range spanning the front width in the approximately axial direction from the end on the 12 side to the discharge port 13. They are tilted (approximately 30 degrees in the embodiment) with respect to the rotation direction of the rotation direction, and are arranged at two equal intervals with a phase difference of 180 degrees in the rotation direction, and are attached in the form of two blades.
In the embodiment, the feed plate 33 has a width of 90 mm and is connected to the rotating shaft 3.
The projecting length from the circumferential surface is 274 mm, and a distance of approximately 10 mm is formed between the inner surface of the cylinder peripheral wall 1a and the tip of the feed plate 33 within the crushing cylinder 1. The rotating direction of the rotating shaft 3 is as shown in the direction of arrow W in FIGS.
The direction of inclination of the straight plate-shaped feed plate 33 is the counterclockwise direction when viewed from the end side of the side where the rotation shaft 3 is provided. The direction is such that the rice husks charged therein are sent out to the discharge port 13 side. The feed plates 33 are arranged in such a manner that the feed plates 33 at respective portions spaced apart in the axial direction have a phase difference of approximately 90 degrees in the rotational direction.

34... is a feed back plate provided on the shaft end side on the discharge port 13 side of the rotary shaft 3, which is formed in a straight plate shape similarly to the feed plate 33, and has a fourth return plate with respect to the rotational direction of the rotary shaft 3.
As shown in the figure, it is attached radially to the circumferential surface of the rotating shaft 3 with an inclination angle that is opposite to the inclination direction of the feed plate 33, and the inclination angle is greater than the inclination angle of the feed plate 33. The angle of inclination is set to be large (approximately 40 degrees in the example).

5... is a breaking blade that is fixedly installed on the inner surface of the cylinder circumferential wall 1a of the crushing cylinder 1 so as to protrude briefly toward the rotating shaft 3, and is within the interval between the above-mentioned feed plates 33... on the inner surface of the cylinder circumferential wall 1a. It is fixed in the corresponding part. It is preferable that the breaking blade 5 is a transverse prismatic rod-like body with a high resistance. In addition, the protrusion length into the crushing cylinder 1 is as shown in FIGS. 5 and 6.
3 and the protruding ends of the return plates 34 and 35 when viewed from the axial direction. This protrusion length may be constant, or may be adjustable in extension and contraction.

Denoted at 5a is a destruction blade provided on the inner circumferential surface of the peripheral wall 1a of the crushing drum 1 at a portion that crosses the peripheral wall 1 through the charging port 12 and a portion adjacent to the charging port 12 in the axial direction of the crushing drum 1. The same breaking blade 5 as described above is used, and as shown in FIG.
When viewed from the axial direction, the protruding end is the aforementioned feed plate 33...
As shown in FIG. It is installed so that it protrudes short towards 3. As for the destruction blade 5a provided at the portion crossing the peripheral wall 1a through the charging port 12 and the destruction blade 5a provided adjacent thereto, the installation is as shown in FIGS. 7 and 6. The feed plate 33 is arranged to correspond to a position where the feed plate 33 has rotated approximately three-quarters of a turn in the direction of rotation of the feed plate 33 with reference to the inlet 12, and is fixedly installed on the inner circumferential surface of the peripheral wall 1a. In the case of the breaking blades 5a, 5a provided at a position closer to the discharge port 13 side than the breaking blades 5a, 5a, and close to the charging port 12 in the axial direction of the crushing barrel 1, as shown in FIG. 6th
As shown in the figure, it is arranged and fixedly installed on the ceiling side of the peripheral wall 1a.

The protrusion length of these destructive blades 5a may also be adjustable in some cases.

Note that, as shown in FIG. 5, the discharge port 13 is located on the side where the rotating feed plate 33 moves downward after rising to the upper limit when viewed from the axial direction of the crushing barrel 1. It is formed on the peripheral wall 1a at a position somewhat elevated from a horizontal line passing through the center point of the crushing cylinder 1.

Reference numeral 7 denotes a pressure cover provided on the outer surface of the outlet 13 so as to be openable and closable.The upper end of the pressure cover 7 is pivotally supported on a horizontal support shaft 70 provided outside the upper edge of the outlet 13. As shown by the chain line in the figure, the outlet 1
When the tip hits the floor plate 80 of the discharge gutter 8 provided on the outer surface of the discharge gutter 8, it works together with the discharge gutter 8 to close the discharge port 13, and as shown in FIG. The pressure cover 7 is pressed toward the closing side by an elastic member 72 containing a spring, which is suspended between a stay 71 provided on the top surface of the pressure lid 7 and the top surface of the pressure lid 7.
The pressing force can be freely adjusted by adjusting the tightening pressure of the spring by rotating the handle 73.

In the illustrated embodiment, 12a represents a hopper provided in the charging port 12, and 4 represents a water tap for adding water to the rice husks charged into the charging port 12.

The embodiment device constructed in this manner operates as follows.

While the rotating shaft 3 is being driven and rotated, the loading port 1
When rice husks are put into the hopper 12a provided in 2,
From there, it flows into the crushing cylinder 1, and is sequentially fed into the crushing cylinder 1 to the discharge port 13 side by the feed plate 33 provided on the circumferential surface of the rotating shaft 3 provided in the crushing cylinder 1, and gradually flows into the crushing cylinder 1. 1, and in that state, it is firmly compressed by the feed plate 33a... and the feed return plate 34..., and becomes a cylindrical mass that follows the inner cavity of the crushing cylinder 1, and the feed plate The rice husk grains and the rice husk grains are strongly rubbed and crushed by rotating together with the rice husk 33, which is broken down by the fixed breaking blade 5, and compressed again, and the pressure lid 7 is pushed open. and then discharged to the outside.

When this state is reached, the rice husks that have been put into the hopper 12a of the charging port 12 are tightly packed in the crushing barrel 1, and the packed rice husks are passed through the crushing barrel 1 through the feed plate in a clumped state. 33..., the rice husks in the crushing barrel 1 are transferred from the inside of the hopper 12a to the crushing barrel 1 through the charging port 12.
The rice husks that are about to flow into the crushing shell 1 are left in that position and the lower layer is simply rotated, making it difficult for the rice husks to flow into the crushing barrel 1. The part of the rice husks facing the charging port 12 collides with the breaking blades 5a located between the feeding plates 33 and is broken while the feeding plate 3
When flowing in the rotational direction of 3..., new rice husks located on the outer periphery are drawn in, which improves the feeding of new rice husks from the charging port 12 into the crushing barrel 1, and Improves the efficiency of rice husk compression.

As explained above, the cylindrical rice husk crushing device according to the present invention has an axially long cylindrical shape supported on a base 2, and has a charging port 12 at one end of the peripheral wall 1a and a discharge port 13 at the other end. A rotating shaft 3 along the axial center line of the crushing cylinder 1 is disposed in the inner cavity of the crushing cylinder 1, and is pivotally supported by bearing support members 31 provided at both ends of the crushing cylinder 1 in the axial direction. On the circumferential surface of the rotating shaft 3, a large number of straight plate-shaped feeding plates 33 are provided at predetermined intervals in the axial direction in a range from the end on the charging port 12 side to the discharge port 13. , the peripheral wall 1a of the crushing barrel 1 is installed so as to be inclined in the direction of sending out the rice husks toward the discharge port 13 side and protrude in the radial direction;
A large number of destructive blades 5 that protrude briefly toward the rotating shaft 3 are fixed to a portion of the inner circumferential surface of the feed plate 33 that is located within the axial interval of the feed plate 33 on the side that approaches the discharge port 13. and a rice husk crushing device in which a straight plate-shaped feed back plate 34 inclined in the opposite direction to the feed plate 33 is attached to the end of the rotating shaft 3 on the discharge port 13 side so as to protrude in the radial direction. , on the inner peripheral surface of the peripheral wall 1a of the crushing cylinder 1, the crushing cylinder 1
When viewed from the axial direction of the crushing drum 1, a protruding end is located at a portion crossing the charging port 12 provided on the peripheral wall 1a of the crushing drum 1, and a portion adjacent to the charging port 12. The structure is such that the destructive blades 5a, which have a length of about 100 mm, protrude short toward the rotating shaft 3, and are arranged and fixed within the space between the aforementioned feed plates 33, which are attached to the rotating shaft 3. , the rice husks introduced from the charging port 12 are very well fed into the crushing barrel 1, which improves the efficiency of compressing the rice husks in the crushing barrel 1, and the conventional means shown in FIG. Compared to the type rice husk crusher,
A significant improvement in grinding efficiency of approximately 50% can be achieved.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of a conventional cylindrical rice husk crusher, Figure 2 is a front view of the feed plate of the same equipment, and Figure 3 is a front view of the feed plate of the same device.
The figure is a side view of a cylindrical rice husk crusher according to the present invention, Figure 4 is a vertical side view of the same as above, Figure 5 is a sectional view taken along line V-V in Figure 4, and Figure 6 is a - line in Figure 4. The sectional view, FIG. 7, is an enlarged longitudinal sectional view of the main part of the device of the present invention. Explanation of symbols in the drawings: 1...Crushing cylinder, 1a...Peripheral wall, 10, 11...Lid plate, 12...Charging port, 12
a...Hopper, 13...Discharge port, 2...Base,
3... Rotating shaft, 30... Shaft end, 31... Bearing support member, 33... Feeding plate, 34, 35... Feeding back plate, 4... Faucet, 5, 5a... Breaking blade, 7... …
Pressure lid, 70... Support shaft, 71... Stay, 72...
Telescopic member, 73... Handle, 8... Discharge gutter, 8
0...Floorboard.

Claims (1)

[Scope of utility model registration request] The crushing cylinder 1 is inserted into the inner cavity of the crushing cylinder 1, which has an axially long cylindrical shape supported on the base 2, and has a charging port 12 at one end of the peripheral wall 1a and a discharge port 13 at the other end.
A rotating shaft 3 is disposed along the axial center line of the crushing drum 1 and is supported by bearing support members 31 provided at both axial ends of the crushing barrel 1. In the range from the side end to the discharge port 13, a large number of straight plate-shaped feed plates 33 are arranged at predetermined intervals in the axial direction and are inclined in a direction toward the discharge port 13 to send out the rice husks. The rotating shaft is attached to the peripheral wall 1a of the crushing cylinder 1 so as to protrude in the radial direction. A straight plate-shaped feeder is installed at the end of the rotary shaft 3 on the discharge port 13 side, and is inclined in the opposite direction to the feeder plate 33. In a rice husk crushing device in which return plates 34 are attached so as to protrude in the radial direction, a portion on the inner circumferential surface of the peripheral wall 1a of the crushing drum 1 that crosses the charging port 12 provided in the peripheral wall 1a of the crushing drum 1; In that area and in the vicinity thereof, there is a breaking blade that protrudes short toward the rotating shaft 3 at a length such that the protruding end overlaps the rotation locus of the rotating end of the feed plate 33 when viewed from the axial direction of the crushing cylinder 1. A cylindrical rice husk crushing device characterized in that the cylindrical rice husk crushing device is arranged and fixed within the interval between the aforementioned feed plates 33 attached to the rotating shaft 3.