JPH0135698B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in rice husk crushers.

Conventionally, most rice husk crushing means crush the rice husk with a crushing blade or a grinding blade. The rice husks are crushed by pressing the rice husks against each other, and a rotating shaft along the axial center line of the crushing cylinder is placed in the inner cavity of an axially long cylindrical crushing cylinder that is placed horizontally on a base. Supporting the rotary shaft, feeding plates formed in a straight plate shape are radially attached at predetermined intervals in the axial direction of the rotary shaft, and the inner circumferential surface of the crushing cylinder is provided with a destruction blade that protrudes toward the rotary shaft. There is a type that is fixedly installed so as not to collide with the feed plate, and has a charging port for rice husks at the starting end of the crushing drum and a discharge port for crushed rice husks at the terminal end. But this one
Despite the power required, the quality and quantity of crushed rice husks produced were insufficient, resulting in poor efficiency.

The present invention has been made to solve these problems in the prior art, and it is an object of the present invention to provide a new rice husk crusher that can make the structure of the machine more compact and improve the efficiency of the crushing action. With the goal.

Hereinafter, details of the present invention will be explained according to illustrated embodiments.

In FIG. 1, A is a rice husk crusher, in which a rice husk supply hopper 3 is mounted on the upper end of a long cylindrical crushing barrel 2 fixed perpendicularly to a base 1, and a rice husk supply hopper 3 is installed in the inner cavity of the crushing barrel 2. A rotating shaft 4 that is a shaft body along the axial center line of
It is pivoted.

In the inner circumferential surface 21 of the crushing barrel 2, at a predetermined interval in the axial direction and having a phase difference of 90 degrees between the upper and lower sides, the side corresponding to the front of the rotation of the rotating shaft 4 is narrowed, and the side corresponding to the rear of the rotation is narrower. Fixed wings 5, which are a pair of wing bodies that spread out, are attached to protrude in the radial direction on the axial center line side thereof.

The narrowed ends corresponding to the rotational front of the fixed wing 5 may also extend forward in parallel, as shown in FIG. This parallel extension portion 51
constitutes a pressure holding portion that maintains the sealed state due to the arching phenomenon of the rice husks formed in the narrowed portion 53 of the fixed blade 5. 52 is the expanded portion of the fixed wing 5.

A rotor blade 6 protruding in the radial direction is fixed to the outer circumferential surface 41 of the rotary shaft 4 so as to pass between the pair of fixed blades 5, 5. The rotary blade 6 is made of a square rod, and the length l ₂ of one side in its cross section has a relationship of l ₁ > l ₂ with respect to the narrow interval l ₁ of the fixed blades 5 (FIG. 3). .

7 is a discharge port for crushed rice husks, 8 is a sprocket fixed to the lower end of the rotating shaft 4 protruding into the base 1, and 9 is a sprocket fixed to the output shaft 11 of the prime mover 10 installed in the base 1. , 12 is a chain that goes around these sprockets 8 and 9, 1
Reference numeral 3 indicates a bearing portion of the rotating shaft 4, and reference numeral 14 indicates an opening/closing shutter installed below the rice husk supply hopper 3.

Next, the operation of the rice husk crusher A configured as described above will be explained.

Rice husks are supplied to the opened rice husk supply hopper 3 of the opening/closing shutter 14, enough rice husks are filled into the crushing drum 2 to perform the crushing action, and the prime mover 10 is operated. Then, the rotating shaft 4 rotates counterclockwise in FIG. 2 via the sprockets 8, 9 and the chain 12. Due to the rotation of the rotary shaft 4, the space between the pair of fixed blades 5, 5 buried in the rice husks G filled in the crushing shell 2 is changed from a widened part 52 to a narrowed part 53. First, while the curved shape of the rice husk particles is maintained to some extent, the rice husk G forms an arch phenomenon in the narrowed part 53 and becomes clogged, and then pressure is applied by the rotary blade 6. As the grain size increases, the shape of the rice husk particles approaches a flat shape and becomes clogged (Fig. 4).

As shown in FIG. 4, when the shape of the rice husk particles becomes flat in the formed arch portion, the sealing effect of the arch decreases, together with the fact that the rear of the fixed wings 5, 5 becomes narrower. It is extremely perfect. Therefore, those fixed wings 5,
When the rotary blade 6 passes between the rice husk particles 5, a strong thrust is applied to the rice husk G packed therein, and an ultra-high pressure is generated between the rice husk particles.

Due to the generation of the ultra-high pressure, a forced flow exceeding the stress limit of the rice husk G occurs. This is not a flow based on changing the relative positions between rice husks, but a flow based on changing the relative positions of each mass point within the structure of the rice husk itself. This flow means the crushing and destruction of the rice husk itself.

Ultra-high pressure is generated between the rice husks G, crushing and crushing the rice husks themselves.
When the destruction is carried out, as shown in FIG. Its parallel extension 5
Pushed out to 1,51.

The crushed rice husks P thus crushed and destroyed move downward under their own weight and are taken out of the crushing drum 2 through the discharge port 7.

In the above-mentioned embodiment, the crushing drum side is fixed and the shaft on the axis side thereof is rotated, but conversely, the crushing drum side may be rotated and the shaft body is fixed.

As described above, in the present invention, a shaft body along the axial center line of the crushing cylinder is disposed at the axial center of the inner cavity of the cylindrical crushing cylinder supported on the base. A pair of blade bodies protrudes in the radial direction from the circumferential surface of the crushing body in parallel at a predetermined interval in the axial direction of the crushing body, and when viewed from the radial direction, the spacing extends along one side of the inner circumferential surface in the circumferential direction. They are provided opposite to each other in a V-shape that is wide and narrow on the other side, and a rod protruding toward the inner circumferential surface is provided on the outer circumferential surface of the shaft body at a portion corresponding to the gap between the pair of wing bodies. , the shaft body or the crushing cylinder is configured to be driven and rotated in a direction in which the rod body passes through the gap between the pair of blade bodies from the wide side to the narrow side, so that the crushing mechanism has a structure in which the rice husk itself is formed. The method uses the sealing properties of the arching phenomenon to generate ultra-high pressure, and creates a forced flow that exceeds the stress limit of the rice husk, in other words, a flow that is based on changing the relative position of each mass point within the structure of the rice husk itself. By adopting this configuration, power consumption is reduced, the amount of rice husk crushed per unit power is increased, and the quality of the rice husk crushing is also good.
Therefore, an efficient rice husk crusher can be obtained. Furthermore, manufacturing is easy because the vanes that cause the arching phenomenon are provided on the inner wall of the crushing body with a gentle curve.

Furthermore, when the cylindrical crushing barrel is supported vertically on the base, there is no need for a means to forcibly transfer the rice husks from the supply side to the discharge side, and only the crushing means need be provided, making the structure of the machine more compact. can be achieved.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a rice husk crusher which is an embodiment of the present invention, Fig. 2 is a sectional view taken along the line shown in Fig. 1, and Fig. 3 is a longitudinal sectional view of a rice husk crusher which is another embodiment of the present invention. FIG. 4 is a developed view of the main part, and FIG. 4 is an explanatory diagram when an arch is formed in the main part, and FIG. 5 is an explanatory diagram when the arch formed in the main part disappears. Explanation of drawing symbols, A...Rice husk crusher, 1...Base, 2...Crushing drum, 21...Inner peripheral surface, 3...Supply hopper, 4...Rotating shaft, 41...Outer peripheral surface, 5 …
... Fixed wing (wing body), 51 ... Extension part, 52 ...
Expanded part, 53... Narrowed part, 6... Rotating blade (rod body), 7... Discharge port, 8, 9... Sprocket, 10... Prime mover, 11... Output shaft, 12
...Chain, 13... Bearing part, 14... Opening/closing shutter, G... Rice husk, P... Crushed rice husk.

Claims (1)

[Claims] 1. A shaft body along the axial center line of the crushing cylinder is disposed in the axial center of the inner cavity of the cylindrical crushing cylinder supported on the base, and a shaft body along the axial center line of the crushing cylinder is provided on the inner circumferential surface of the crushing cylinder. When viewed from the radial direction, a pair of blade bodies that are parallel to each other at a predetermined interval and protrude in the radial direction are formed into a V-shaped shape in which the interval is wide on one side in the circumferential direction of the inner circumferential surface and narrow on the other side. A rod body is provided on the outer circumferential surface of the shaft body at a position corresponding to the gap between the pair of blade bodies and protrudes toward the inner circumferential surface, and the shaft body or the crushing body is A rice husk crusher characterized in that the rod is driven and rotated in a direction in which the rod passes through the gap between the pair of blades from the wide side to the narrow side.