JPS6212562Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crusher for obtaining sawdust-like powder particles by crushing material wood pieces into thin pieces of appropriate size. Conventionally, in order to crush wood chips into fine particles and use them for chips or fuel, it has already been done to supply raw wood chips into a case and crush them using a rod that projects radially from a rotating shaft. However, in this case, if a piece of wood gets caught between the rod and the inner wall of the case while the rod is rotating, or if stones, iron pieces, etc. are mixed in the case, this creates resistance and the rod cannot rotate. As a result, the driving rods were bent or broken, and the equipment was damaged, making it necessary to stop the work, which was also dangerous.

The present invention eliminates such inconveniences and takes into account that the cause of the above-mentioned conventional defects lies in the rigidity of the rod.
The striking rod is a metal chain, and its flexibility prevents bending and breakage due to large resistance, and the tension generated by the centrifugal force during rotation provides sufficient impact strength to crush wood chips. A metal chain of an appropriate length is provided in multiple stages radially protruding from a rapid rotation shaft installed in the center of the cylindrical case, and a supply port for raw wood chips is provided at the top of the case, and a collection port for crushed material is placed at the bottom. It is characterized by having an exit.

Embodiments of the present invention will be described with reference to the drawings.

In the drawing, 1 is a cylindrical case made of iron, which is connected to stand 6.
A rotating shaft 2 is provided at the center of the interior of the rotating shaft 2, and this is linked to a motor 7 to rapidly rotate the rotating shaft 2.

A metal chain 3 of an appropriate length is arranged radially and in multiple stages in the length direction of the shaft 2 and protrudes from the rotating shaft 2.
A receiving piece 8 consisting of an appropriate number of protrusions is provided on the inner circumferential surface of the case 1 in order to enhance the crushing effect together with the striking piece from the metal chain 3.

The metal chain 3 is attached to the rotating shaft 2 in a spiral position along the length of the shaft 2 as shown in FIG. Furthermore, the crushing effect can be further improved by forming the crusher into a screw shape that pushes the crushed grains downward.

For example, this machine uses a supply conveyor 9 as shown in the figure.
When the rotary shaft 2 is rapidly rotated while supplying wood chips or bark that have been cut into small pieces into the case 1 from the upper supply port 4, the hanging metal chain 3 is moved outward in the radial direction by centrifugal force when it is stationary. The material is crushed by the impact force caused by the rotation of the material and by the collision with the receiving piece 8 on the inner peripheral surface of the case, and the powder particles accumulate in the lower part of the case 1 and are sequentially discharged from the outlet 5. be done.

According to the present invention, a metal chain 3 attached to a rotating shaft 2 that rapidly rotates radially extends outward due to centrifugal force, and the tension produces a large impact and crushing force, and the material strength of the metal chain 3 is increased. Since the destructive force is also large, the rotation of these many metal chains 3 has an extremely strong effect on crushing pieces of wood, etc., and when the metal chains 3 rotate, material pieces of wood are pinched or pieces of iron, stones, etc. are mixed in, creating a large resistance. When the chain itself is flexible, it avoids damage due to the bending properties of the chain itself, and it has durability and can be used robustly for a long time without causing damage, unlike conventional rigid rods, and is economical. This has the effect of providing an extremely suitable device for crushing materials up to logs.

[Brief explanation of the drawing]

FIG. 1 is a cut-away side view showing an embodiment of the device of the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is a cut-away side view of main parts showing another embodiment. 1...Case, Z...Rapid rotation shaft, 3...Metal chain, 4...Material wood chip supply port, 5...Crushed material outlet.

Claims (1)

[Scope of utility model registration request] Rapid rotation shaft 2 provided in the center of the cylindrical case 1
A wood chip crusher is provided with a metal chain 3 of appropriate length protruding in a multistage radial manner from a case 1, a supply port 4 for material wood chips in the upper part of the case 1, and a shredded material outlet 5 in the lower part.