JP3108882U - Wood crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost wood crushing apparatus capable of crushing wood efficiently and in a short time without increasing the rotation speed of a feed blade.
SOLUTION: A feed blade 3 having a cutter 3a at its tip is rotatably provided in a cylindrical casing 2 having a wood input port 2a opened upward, and the wood W input in the vicinity of the input port 2a of the casing 2 is provided. A cutting blade 3a and a receiving blade 4 for roughing and crushing are provided, a recess 2b is formed in the lower portion of the casing 2, and a rough crushing wood piece fed downward by the feeding blade 3 into the recess 2b. A crusher 5 for crushing Wa is provided, and a porous piece of a predetermined size is formed on the curved surface of the casing 2 to pass the crushed wood piece Wa to the outside of the casing 2. A fan that sucks down the casing 2 is provided in the lower part of the casing, and a storage tank that stores the shredded wood pieces sucked by the fan is provided in the lower part of the casing.
[Selection] Figure 3

Description

  The present invention relates to an apparatus for crushing wood into chips.

  As a conventional wood crushing device, a feed blade having a cutter at its tip is rotatably provided in a cylindrical casing having an open wood inlet, and the wood introduced into the inner surface of the casing is worn with the cutter of the feed blade. A receiving blade for crushing is provided, a porous hole of a predetermined size is formed on the curved surface of the casing to pass the crushed wood piece out of the casing, and the crushed wood piece passing through the porous hole is attracted to the lower part of the casing (For example, refer to Patent Document 1).

By the way, the wood crushing device having the above structure circulates in the casing until the wood passes through the perforations of the casing. However, because the feed blade is large, the frequency with which the wood comes into contact with the cutter and the receiving blade is reduced and it takes time to crush. There was a problem that crushing efficiency was poor. Further, since the feed blade is generally large, there is a limit to increasing the rotational speed, and there is a problem that a motor with a large driving force is necessary and expensive.
Japanese Patent No. 3257778

  The problem to be solved by the present invention is to solve these conventional problems and to provide a low-cost wood crushing apparatus that can crush wood efficiently and in a short time without increasing the rotational speed of the feed blade. .

The configuration of the present invention that solves this problem is as follows.
1) A feed blade equipped with a cutter at the tip is rotatably provided in a cylindrical casing with an open wood inlet, and the wood thrown into the inlet of the casing is scraped with the cutter of the feed blade for rough crushing. Wood that has been crushed on the side of the casing, provided with a receiving blade, formed with a recess in the lower part of the casing, and provided with a crusher that crushes roughly crushed wood pieces sent downward with a feed blade into the recess A storage tank for storing a shredded piece of wood sucked by the fan provided with a fan that sucks the shredded piece of wood that has passed through the perforation to the lower part of the casing by forming a hole with a predetermined diameter that allows the piece to pass outside the casing. 2) A crusher horizontally supports a rotating shaft with a plurality of cutters projecting, and a cutter blade with the rotating shaft and a receiving blade is provided in a recess at the bottom of the casing. Projected structure The wood crushing apparatus described in 1) 3) The wood crushing apparatus described in 1) or 2) provided with a chute that guides and drops a piece of wood that has passed through the perforation of the casing to the periphery of the fan. A wood crushing device according to any one of 1) to 3) above, in which a small recess for collecting foreign matter is formed on the bottom surface of the recess provided with a machine, and the bottom plate of the small recess is freely detachable. The wood crushing apparatus according to any one of 1) to 4) above, wherein a communication passage is provided for circulating the air in the storage tank through the inlet of the casing for circulation.

  According to the present invention, roughly crushed wood pieces are sent to a crusher by feed blades and crushed at high speed, and the wood pieces having a required size pass through the casing. Accordingly, the crushing efficiency is improved, and the efficiency does not deteriorate even if the feed blade is made large. In addition, since the efficiency can be increased without increasing the speed of the feed blade, the feed blade can be made larger to crush various sizes and shapes of wood.

  The crusher of the present invention has a plurality of receiving blades protruding from the inner surface of the recess at the bottom of the casing, and horizontally supports a rotating shaft that protrudes the receiving blade and a crushing cutter. It has a structure capable of finely crushing a piece of wood that has been roughly crushed by grinding a rotary shaft cutter, and is driven at a rotational speed that is smaller than the feed blade and approximately double speed. Below the curved surface of the casing, a chute for guiding the shredded wood pieces that have passed through the perforations to the periphery of the fan is provided, so that it does not fall directly on the fan to prevent trouble. A small recess for collecting foreign matter is formed on the bottom surface of the recess where the crusher is provided so that metal pieces other than wood are not mixed into the wood pieces. Embodiments of the present invention will be specifically described below with reference to the drawings.

  FIG. 1 is an external view of the wood crushing apparatus of the embodiment, FIG. 2 is an internal explanatory view of the wood crushing apparatus of the embodiment, FIG. 3 is an explanatory view of a feed blade of the embodiment, and FIGS. FIG. 6 is an explanatory view of the charging port of the embodiment, FIG. 7 is an explanatory view of the casing of the embodiment, and FIG. 8 is an explanatory view of the crusher of the embodiment.

  As shown in FIGS. 1 to 5, the wood crushing apparatus 1 according to the present embodiment is capable of rotating a feed blade 3 having a cutter 3 a at its tip in a cylindrical casing 2 having a wood W inlet 2 a opened upward. And a receiving blade 4 for roughing and crushing the wood W introduced in the vicinity of the insertion port 2a of the casing 2 with the cutter 3a of the feeding blade 3 is provided, and the feeding blade 3 is provided below the recess 2b formed in the lower portion of the casing 2. A crushing machine 5 is provided for crushing the roughly crushed wood piece Wa sent to. 3b is a rotating shaft, 3c is an annular body for fixing the feed blade 3, 3d is a motor, and 3e is a belt.

  A fan 2c is formed on the curved surface of the casing 2 to form a porous 2c having a diameter of 5 mm that allows the finely crushed wood piece Wa to pass outside the casing 2, and to suck the finely divided timber piece Wa through the porous 2c below the casing 2. 6 is provided in the lower part of the casing 2, a storage tank 7 for storing the shredded wood pieces Wa sucked by the fan 6 is provided in the lower part of the casing 2, and a small recess 2 d with a bottom lid is provided on the bottom surface of the recess 2 b. Forming.

  The crusher 5 projects a plurality of receiving blades 5d on the inner surface of the recess 2b of the casing 2, and horizontally supports a rotating shaft 5a projecting the receiving blades 5d and the cutters 5b and 5c. The wood piece Wa roughly crushed by the cutting of the receiving blade 5d of the place 2b and the cutters 5b and 5c of the rotating shaft 5a can be crushed. The shaft end of the rotary shaft 5a is detachably connected to a shaft of a pulley 5f suspended by a motor 5e and a belt 5h by a coupling 5g to facilitate replacement and maintenance of the crusher 5.

  A chute 8 is provided below the curved surface of the casing 2 to guide the shredded wood pieces Wa that have passed through the perforations 2 c to the periphery of the fan 6. A side face of the storage tank 7 is opened, and a door 7a with a filter for exhausting only the gas sucked by the fan 6 to the outside is provided so as to be freely opened and closed. A motor 6 a that rotates the fan 6 is attached to the outer surface of the storage tank 7, and a belt 6 c is suspended between the output shaft of the motor 6 a and the rotation shaft 6 b of the fan 6 to transmit the driving force.

  In this embodiment, the motors 3e, 5e and 6a are operated to rotate the feed blade 3, the crusher 5 and the fan 6, respectively. The rotation speed is 500 rpm for the feed blades and 1000 rpm for the crusher 5. As shown in FIGS. 6 to 8, when the wood W is introduced into the insertion port 2 a, it is roughly crushed by the cutter 3 a and the receiving blade 4, falls into the casing 2, and is sent in the rotation direction by the feed blade 3. The sent wood piece Wa moves to the lower recess 2 b and is further crushed by the crusher 5.

  The finely crushed wood piece Wa is flipped upward by the rotational force of the crusher 5 and is sent again in the rotational direction by the feed blade 3. At this time, the foreign matter B such as a metal piece mixed in the wood W falls and is collected in the lower small recess 2d due to the specific gravity difference. When the sent wood piece Wa has a size of about 5 mm, it passes through the porous 2c of the casing 2 by centrifugal force caused by the feeding. The piece of wood Wa that has passed through the perforations 2c is guided to both sides of the fan 6 by the chute 8, and troubles caused by dropping directly onto the fan 6 are prevented.

  The wood piece Wa that has passed through the porous 2c is attracted downward by the suction force of the fan 6 and falls to the storage tank 7, and only the sucked gas is exhausted from the filter-attached door 7a and the wood piece Wa is stored in the storage tank 7. To go. When it does not become 5 mm by one crushing, it is sent again to the crusher 5 by the feed blade 3 and is finely crushed.

  Since the present embodiment is configured as described above, by providing the crusher 5 having a diameter smaller than that of the feed blade 3 below the feed blade 3, the roughly crushed wood piece Wa is fed to the crusher 5 by the feed blade 3. The crushed wood pieces Wa that are crushed at high speed and pass through the porous 2c of the casing 2 improve the crushing efficiency by about 2 to 3 times, and make the feed blade 3 large. Efficiency does not deteriorate. Moreover, since efficiency can be improved without speeding up the feed blade 3, the feed blade 3 can be made larger in size, and various sizes and shapes of wood can be crushed.

  FIG. 9 shows another example of the wood crushing apparatus of the embodiment. FIG. 9 is an external view of a wood crusher of another example of the embodiment. In the figure, 9 is an input booth, 9a is a curtain, 10 is a communication path, 11 is a conveyor for transporting the wood W to the input booth, and A is air.

  In the wood crushing apparatus 1 shown in FIG. 9, a hood-shaped charging booth 9 in which a curtain 9 a is suspended is attached to a charging port 2 a of a casing 2, and the charging booth 9 and the storage tank 7 are communicated with each other through a communication path 10. When the wood piece Wa crushed by the fan 6 is sucked into the storage tank 7, the air A sucked at the same time is sent into the casing 2 through the input booth 9 through the communication passage 10 so that the air A is not circulated and exhausted to the outside. To do. The curtain 9a blocks the supplied air A so as not to leak to the outside.

  In the above-described embodiment, the air is exhausted from the filter-attached door 7a. However, there is a problem that the filter is clogged and the suction efficiency is lowered, or the coarse mesh filter discharges the crushed powder of the wood W. In another example of the embodiment, since the air A is circulated, the crushed powder is not discharged to the outside, and the suction efficiency is not lowered. Other reference numerals and configurations are the same as those in the embodiment.

  The wood crushing device of the present invention is used for chipping of demolition materials for wooden buildings, waste materials, scrap materials discharged at the time of woodworking, and other branch materials that are difficult to use for woodworking. Used as raw material and boiler fuel.

It is an external view of the wood crushing apparatus of an Example. It is an inside explanatory view of the wood crusher of an example. It is explanatory drawing of the feed blade of an Example. It is explanatory drawing of the crusher of an Example. It is explanatory drawing of the crusher of an Example. It is explanatory drawing of the inlet of an Example. It is a section explanatory view of the casing of an example. It is explanatory drawing of the crusher of an Example. It is an external view of the wood crushing apparatus of the other example of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wood crusher 2 Casing 2a Slot 2b Recess 2c Porous 2d Small recess 3 Feed blade 3a Cutter 3b Rotating shaft 3c Annular body 3d Motor 3e Belt 4 Receiving blade 5 Crusher 5a Rotating shaft 5b, 5c Cutter 5d Receiving blade 5e Motor 5f Pulley 5g Coupling 5h Belt 6 Fan 6a Motor 6b Rotating shaft 6c Belt 7 Storage tank 7a Filter door 8 Chute 9 Loading booth 9a Curtain 10 Communication path 11 Conveyor A Air B Foreign object W Wood Wa Wood piece

Claims (5)

  A feed blade equipped with a cutter at the tip is rotatably provided in a cylindrical casing with a wood inlet opening upward, and the wood introduced into the casing inlet is ground and crushed by the cutter of the feed blade. A blade is provided, a recess is formed in the lower part of the casing, a crusher for crushing roughly crushed wood pieces sent downward by a feed blade is provided in the recess, and the crushed wood pieces are placed on the side of the casing. A hole with a predetermined diameter that passes outside the casing is formed, a fan that sucks the shredded wood pieces that have passed through the same hole is provided below the casing, and a storage tank that stores shredded wood pieces sucked by the fan is provided. A wood crusher characterized by that.   The wood crusher according to claim 1, wherein the crusher has a structure in which a rotating shaft provided with a plurality of cutters is horizontally supported, and a cutter blade and a cutting blade for cutting the cutter are provided in a recess in the lower part of the casing. apparatus.   The wood crushing apparatus according to claim 1 or 2, wherein a chute is provided on a side surface of the casing to guide and drop the piece of wood that has passed through the perforation of the casing to the periphery of the fan.   The wood crusher according to any one of claims 1 to 3, wherein a small recess for collecting foreign matter is formed on a bottom surface of the recess provided with a crusher, and a bottom plate of the small recess is detachable.   The wood crushing apparatus according to any one of claims 1 to 4, further comprising a communication passage that circulates the air in the storage tank sucked by a fan through the inlet of the casing.

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