JP2007216091A - Crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crusher capable of certainly feeding a wooden strip or the like thrown from a throwing port to a rotation blade and having a high productivity by preventing rotation of the wooden strip or the like thrown into a casing together with a rotation table at crushing. <P>SOLUTION: The crusher for the wooden strip is provided with a base part and a feeding part detachably mounted to the base part. A rotation blade drive means is provided on the base part and the crushing rotation blade driven by the rotation blade drive means is detachably arranged between the rotation blade drive means and the feeding part. A body of the feeding part is formed to a cylindrical shape and a lid plate provided with an article to be crushed feeding port is exchangeably and non-rotatably provided on one side of the cylindrical body. A throwing port of the wooden strip is provided on the other side of the cylindrical body and a rotation prevention means and a pressure-feeding means for pressing the article to be crushed from the article to be crushed feeding port to the rotation blade in cooperation with the rotation prevention means are provided at the inside of the cylindrical body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulverizer for producing a granular material such as sawdust or a powdery material mainly from lumber such as a lumber mill or a wood processing plant, or pieces such as wood pieces and end materials, various pieces of wood, and wood chips generated during wood processing.

Conventionally, there are few dedicated pulverizers for processing such seed pieces and wood chips into granular or powdery materials, and generally wood crushers for making paper-making chips are used as pulverizers.
Such a crusher substitute crusher has a structure in which a plurality of crushing blades are disposed in a pair of rotors that are driven to rotate by a driving means such as a motor, and the crushing blades are made to bite wood pieces and the like to crush the pieces of wood. It was the structure which was made to do.
In such a structure, although the crushing force is large, there is a problem that a large power is required, the crushed particle size is large, and the use of the processed product is limited.

Then, what is shown to patent documents as an exclusive machine which grinds a piece of wood is proposed.
This dedicated machine for crushing wood pieces has a casing (cylindrical body) provided with a wood piece inlet at the top and a pulverized product outlet (supply port) at the bottom, and a space above the bottom outlet in the casing. And a plurality of low-profile rotary blades mounted on a perforated rotary table that passes through the bottom of the casing and protrudes upward at substantially the center of the screen and is fixed to the top of the rotary drive shaft. It is configured.

  However, with such a structure, the pieces of wood thrown in from the inlet are easily accumulated in the casing and bridged, and when the bridge is applied, there is a problem that the rotating blade rotates idly and the pulverizing function is impaired, The operating status must be frequently monitored, which is troublesome and results in poor productivity.

Furthermore, the wooden pieces put into the casing are easy to rotate even when the rotary table rotates, and if the wooden pieces rotate with the rotary table, the crushing function is impaired here, too, so it is not practical. There's a problem.
Japanese Patent Laid-Open No. 7-68513

  Therefore, the present invention has been proposed in view of the above-described problems, and it is possible to reliably supply wood pieces and the like to the rotary blade without causing a piece of wood or the like introduced from the insertion port to accumulate in the casing and to be bridged. An object of the present invention is to provide a pulverizer with high productivity by preventing a piece of wood or the like thrown into the inside of the rotary table.

  In order to achieve the above object, a pulverizer according to the present invention includes a base portion and a supply portion that is detachably attached to the base portion. A crushing rotary blade driven by the rotary blade driving means is detachably disposed between the blade driving means and the supply portion, and the supply portion forms a main body in a cylindrical shape, and one side of the cylindrical main body The cover plate provided with the pulverized product supply port is replaceable and non-rotatable, and the other side portion of the cylindrical main body has a wood piece inlet, and the cylindrical main body has anti-rotation means inside. The most important feature is that a pressure feeding means for pressing the pulverized material from the pulverized material supply port to the rotary blade in cooperation with the rotation preventing means is provided.

  In the pulverizer according to the present invention, the pressure feeding means is formed by screw blades rotated by a drive motor, the cylindrical main body is formed in a vertically long shape, and a piece of wood is placed on the upper end side portion of the cylindrical main body. The inlet is provided with a pulverized material supply port at the lower end portion, and further, the cylindrical main body is formed in a horizontally long shape, and is driven by a rotary blade driving means on one side of the cylindrical main body. The pulverizing rotary blade is detachably disposed, and a wood piece insertion port is provided on the other side and / or the peripheral wall portion on the other side.

According to the pulverizer of the present invention, the wood pieces and the like introduced from the inlet are cooperated with the rotation preventing means from the pulverized product supply port by the pressure feeding means for pressing the pulverized product from the pulverized product supply port toward the rotary blade. Since it is forcibly supplied to the rotary blade, there is no bridge in the cylindrical body as in the prior art.
As a result, there is an advantage that it is possible to eliminate the trouble of frequent monitoring of the pulverized material such as a piece of wood put into the cylindrical main body, and to improve productivity by eliminating the idle rotation of the rotary blade.

  In addition, the wood pieces and the like introduced from the insertion port can be supplied to the pulverized product supply port by the pressing means while being prevented from rotating with the rotary blade by the rotation prevention unit. In addition, there is an advantage that a high pulverization function can be continuously maintained without the pulverized material such as wood chips rotating with the rotary table.

  Hereinafter, preferred embodiments of the pulverizer of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal front view of a pulverizer according to the present invention, and FIG. 2 is a cross-sectional plan view of a cylindrical main body portion. In the figure, reference numeral 1 generally indicates the pulverizer.
The pulverizer 1 includes a base portion 3 provided with a rotary blade driving means 2 and a supply portion 5 detachably attached to the upper portion of the base portion 3 via an attachment bracket 4.
The base part 3 is an I-shaped steel and is provided with a rotary blade driving means 2 for rotationally driving the frame 7.

  The rotary blade driving means 2 includes a drive shaft 9 rotatably supported by a bearing member 8 attached to a substantially central portion of the base portion 3, and a drive shaft pulley 10 attached to the lower end portion of the drive shaft 9. And a motor 11 installed inside the base unit 3, a drive pulley 13 attached to the output shaft 12 of the motor 11 and a pulley belt 14 strung over both pulleys 10 and 13, A portion near the upper end of the drive shaft 9 protrudes above the bearing member 8 as a spline shaft 15.

A rotary blade 7 is detachably attached to a spline shaft 15 protruding from the bearing member 8.
As shown in FIGS. 1 and 3, the rotary blade 7 is formed with a cylindrical mounting boss 17 at the center of the lower surface of a disk 16 having a diameter larger than that of a supply portion 5 described later. A serration 18 that fits into the spline shaft 15 is engraved on the inner peripheral surface of 17 and a plurality of cutting blades 19, 19... Formed in a gentle arc are radially formed on the upper surface of the disk 16. The facets formed and crushed when the disc 16 is rotated are pushed out to the periphery.

The pulverized material supply unit 5 such as a piece of wood positioned above the rotary blade 7 has a main body 20 formed in a vertically long cylindrical shape, and a pulverized material supply port 21 is formed at the bottom of the main body 20. The rotation preventing means 22 and the pressure feeding means 20 for pressing the pulverized material against the pulverized material supply port 21 in cooperation with the rotation preventing means are disposed. A cover plate 25 is provided.
As shown in FIG. 3, the pulverized product supply port 21 is attached and detached (replaced) with a disk-like bottom plate 28 to a bottom plate attaching annular member 27 that is connected by a flange portion 26 to form a part of the main body 20. The bottom plate 28 is formed in a circular shape with a plurality of openings.

Further, on the upper surface (the inner surface of the main body) of the disk-like bottom plate 28, a low-rotation barrier 29 is erected in a radial manner.
Incidentally, the rotation of the bottom plate 28 is prevented by fitting a fitting recess 30 formed on the peripheral edge of the bottom plate 28 into a fitting projection 30 formed in a rib shape at the inner corner of the bottom plate attaching annular member 27. By combining, the bottom plate 28 is prevented from rotating.
In the figure, reference numeral 32 denotes a bearing portion that supports a lower end portion of the rotary shaft 9 described later, and reference numeral 33 denotes a dust collection cover that covers the protruding portion of the rotary blade 7. Is provided with a takeout port 34 for taking out the chips crushed by the rotary blade 7 (see FIGS. 1 and 2).

The rotation preventing means 22 provided on the inner side of the main body 20 is formed by attaching a rectangular plate-like member in the vertical direction in a state of protruding from the inner peripheral surface of the main body 20.
The pressure feeding means 23 that presses the pulverized material against the pulverized material supply port 21 in cooperation with the rotation preventing means 22 is provided between the cover plate 25 attached to the upper surface portion of the main body 20 and the bottom plate 28 of the main body 20. The rotary shaft 35 is provided over the main body 20 from the cover plate 25 and is driven via a drive motor 36 and a speed reducer 37 to thereby form a helical screw blade provided on the rotary shaft 35. 38 is provided.

Next, a procedure for using the pulverizer 1 of the present invention configured as described above will be described.
First, the control means (not shown) is operated to activate the motor 11 of the rotary blade driving means 2 to rotate the rotary blade 7 and the drive motor 36 is activated to activate the main body 20 with the screw blades 38 provided on the rotary shaft 35. It is rotated in the direction to be sent to the pulverized material supply port 21 facing the rotary blade in which the wooden piece or the like rotates.

Next, when a piece of wood or the like is introduced from the insertion port 24 formed on the cover plate 25, the introduced piece of wood or the like is prevented from rotating by the rotation prevention means, and the pulverized material that faces the rotary blade 7 by the rotation of the screw blade 38. The material is fed to the supply port 21 and is pressed and pulverized from the pulverized material supply port 21 so as to come into contact with the rotary blade 7.
Therefore, the pulverization process can be performed automatically only by inserting a piece of wood or the like from the insertion port 24, so that the pulverization process can be performed continuously.
Thus, the crushed facets are scattered radially around the rotary blade 7, and the scattered facets are collected by the dust collecting cover 33 and discharged from the take-out port 34.

The size of the facet is determined by the rotational speed of the rotary blade 7 and the size of the pulverized material supply port 21. When the rotary blade 7 is worn out, these members need to be replaced.
Therefore, when the rotary blade 7 is replaced, maintained, or inspected, the mounting blade 4 is removed, and when the supply unit 5 is separated from the base unit 3, the rotary blade 7 is exposed. It can be easily removed just by lifting the rotary blade 7.
After replacing the rotary blade 7, the supply unit 5 is placed on the base unit 3 again and fixed with the mounting bracket 4, and the replacement operation of the rotary blade 7 is completed.

When the size of the pulverized product supply port 21 is changed, when the supply portion 5 is separated from the bottom plate attaching annular member 27 by the flange portion 26, the disk-shaped bottom plate 28 in which the pulverized product supply port 21 is formed is exposed. Therefore, the bottom plate 28 is replaced with a bottom plate (not shown) provided with a pulverized material supply port 21 having a desired size.
After that, when the supply unit 5 is installed on the bottom plate attaching annular member 27 and fixed by the flange portion 26, the operation of changing the size of the pulverized product supply port 21 is completed.

In the above-described embodiment, the base portion 3 provided with the rotary blade driving means 2 and the pulverized material such as a piece of wood detachably attached to the upper portion of the base portion 3 via the mounting bracket 4 are rotated. Although it is a so-called vertical type provided with a supply unit for supplying to the blade driving means 2 at the top and bottom, it is not limited to this, and a so-called “horizontal crusher” in a state where the above configuration is arranged on a flat knitting machine is used. You can also.
In this case, the wood piece inlet 24 is provided on the side wall portion on the side opposite to the end of the main body 20 and / or in the vicinity thereof on the opposite side of the rotary blade 7. This has the advantage that the inlet 24 can be provided at a low position even if the pulverizer 1 is large.
Needless to say, the pulverizer according to the present invention is not limited to the above-described pulverization of wood pieces and the like, and can also be used for pulverizing plastics, shells, garbage, and the like.

FIG. 2 is a longitudinal sectional front view showing a schematic configuration of a crusher according to the present invention. These are the cross-sectional top views of the main-body part of the grinder concerning this invention. FIG. 3 is an exploded perspective view of a rotating blade portion of a crusher according to the present invention and a supply unit for pulverized material such as wood chips.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Crusher 2 ... Rotation drive means 3 ... Base part 5 ... Supply part 7 ... Rotary blade 20 ... Main body 21 ... Ground material supply port 22 ... Rotation Prevention means 23 ... Pressure feeding means 24 ... Inlet 25 ... Cover plate 38 ... Screw blade

Claims (4)

A base part and a supply part detachably attached to the base part. The base part is provided with a rotary blade drive means, and the rotary blade drive means is provided between the rotary blade drive means and the supply part. Rotating blade for crushing driven by can be detachably installed, the supply part is formed in a cylindrical shape, and a lid plate with a pulverized material supply port can be replaced on one side of the cylindrical main body In addition, it is provided in a non-rotatable manner, and a wooden piece insertion port is provided on the other side of the cylindrical main body. A wood chip crusher comprising pressure feeding means for pressing from a supply port to a rotary blade. The wood chip crusher according to claim 1, wherein the pressure feeding means is formed of screw blades rotated by a drive motor. The cylindrical main body is formed in a vertically long shape, and a wooden piece charging port is provided at an upper end side portion of the cylindrical main body, and a pulverized material supply port is provided at a lower end side portion thereof. Item 3. A wood chip grinder according to Item 2. A cylindrical main body is formed in a horizontally long shape, and a rotary blade for crushing driven by a rotary blade driving means is detachably disposed on one side of the cylindrical main body, and the other side and / or The wood piece crusher according to claim 1 or 2, wherein a wood piece inlet is provided in a peripheral wall portion on the other side.

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