JP3445781B2 - Single shaft crusher - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a uniaxial crusher for crushing coarse dust and industrial waste.

[0002]

2. Description of the Related Art As a type of crusher for treating waste such as coarse dust, a twin-shaft crusher for crushing waste between two parallel crushing rotors and a movable crusher provided on one crushing rotor are used. There is a uniaxial shredder that shreds waste between the blade and the fixed blade. In the former two-axis crusher, the crushing capacity is determined by the distance between the two crushing rotors and the size of the crushing blade.
A large crushed product or a hard crushed product has a drawback that the crushing efficiency is significantly reduced. The latter uniaxial crusher has a simple structure, but requires devising how to efficiently trap waste between the crushing rotor and the fixed blade.

Therefore, many conventional uniaxial crushers have a structure in which a crushed material is pressed against a rotor by a hydraulic pusher and crushed. However, in the method of pressing with a pusher, the time from when the pusher extends from the standby position until the crushed material is pressed against the rotor,
During the time when the pusher retracts, waste is not crushed,
There is dead time when the work as a crusher is not done. Further, if the pressure of the pusher is too strong, the blade only idles against the waste, and the pressing time is wasted.

[0004]

As described above, the pusher type has a problem that the processing amount per horsepower is small because the rotor is crushed only when an appropriate pressing force is generated on the rotor. For the purpose of solving the problem of the pusher type, there is one in which a crushing rotor is provided with a feed roller for pressing the crushing object so that the crushing object is continuously crushed by the crushing rotor (Japanese Patent No. 2896085). See the book). However, with a uniaxial crusher using a feed roller, light objects such as PET bottles and hard objects such as bamboo do not bite into the movable blade of the rotor and the fixed blade of the frame and escape, so the crushing efficiency is poor. There was a problem. Therefore, an object of the present invention is to provide a uniaxial crusher capable of continuous crushing and reliably crushing even light or hard objects.

[0005]

In order to solve the above-mentioned problems, a uniaxial crusher of the present invention comprises a crushing rotor formed by arranging a plurality of V-shaped troughs and peaks, and a trough of the crushing rotor. A substantially square movable blade fixed so that the two sides closely contact each other,
A front surface of the movable blade, in a uniaxial crusher comprising a fixed blade having a V-shaped blade portion which is close to a mountain portion of the crushing rotor and generates a shearing force between two protruding sides of the movable blade. Is formed into a concave surface, and the movable blade fixed to the valley portion of the crushing rotor has a spiral shape or a V shape as a whole, and the upper portion of the fixed blade on the lower side of the inner inclined surface of the hopper on the fixed blade side. A triangular plate-shaped vertical rib for guiding the object to be crushed to the movable blade is provided at a position located at. In this uniaxial crusher, a backflow preventing pusher is provided which is driven forward and backward along the inclined surface of the hopper on the fixed blade side and can be stopped at a desired position. In addition, a protrusion that prevents escape of the crushed object is formed on the front surface of the backflow prevention pusher.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. 1 is a longitudinal side view showing an embodiment of the present invention,
2 is a plan view, FIG. 3 is an enlarged cross-sectional view of an essential part, and FIG. 4 is an enlarged plan view of an essential part.

In these figures, 1 is a crusher main body, 2
Is a crushed material input hopper, 3 is a crushed material input hopper 2
The crushing rotor, which is installed at the bottom of the crushing rotor and is formed by arranging a plurality of V-shaped troughs and crests side by side, has a substantially rectangular movable blade fixed to the troughs of the crushing rotor 3 so that two sides are in close contact with each other. Is a fixed blade formed with a V-shaped blade portion which is located below the crushing object input hopper 2 and which is close to the crest portion of the crushing rotor 3 and generates a shearing force between the protruding two sides of the movable blade 4. Is a backflow prevention pusher that can be driven back and forth along the inner inclined surface of the hopper on the fixed blade 5 side and can be stopped at a desired position, 7 is a cylinder for moving the pusher 6, and 8 is for rotating the crushing rotor 3. Drive motor, 9 is a triangular plate-shaped vertical rib for guiding the crushed object to the movable blade, and 10 is fixed to the valley portion of the crushing rotor 3 by welding or the like in order to fix the movable blade 4 to the valley portion of the crushing rotor 3. It is a movable blade fixing tool.

As shown in FIGS. 3 and 4, the movable blade 4 is formed so that its front surface is concave so that the crushed material does not escape to the upper side of the hopper 2 when meshing with the fixed blade 5. There is. The movable blades 4 are attached to a plurality of troughs formed side by side with the crushing rotor 3 so that the crushing rotor 3 as a whole has a spiral shape or a V shape.

A triangular plate-shaped vertical rib 9 for guiding the object to be crushed to the movable blade 4 is provided on the lower portion of the inclined surface inside the hopper 2 on the fixed blade 5 side. The object to be crushed is prevented from laterally escaping when it is bitten into the fixed blade 5, and the object to be crushed is surely sheared.
The vertical rib 9 does not necessarily have to be provided for each blade of the fixed blade 5, and may be provided in a scattered manner.

In the backflow prevention pusher 6 of the present invention, the pusher 11 of the conventional type presses it on the same surface as the fixed blade 5 surface, while the inclination of about 60 ° with respect to the fixed blade 5 surface. The hopper 2 is attached to the inclined surface of the hopper 2, and the front surface of the pusher 6 is provided with a projection 6a for making it difficult for the crushed material to escape. Pusher 6
Usually retreat to the upper part, and its position is adjusted according to the type and size of the crushed object, but it is not always necessary to reciprocate. The object to be crushed put into the hopper 2 is moved by the rotation of the crushing rotor 3 to the portion where the movable blade 4 meshes with the fixed blade 5, and the tip of the concave surface of the movable blade 4 is received by the fixed blade 5. This is because most of the material to be crushed is surely sheared and crushed by biting into the material to be crushed and cooperating with the action of the vertical ribs 9.

On the other hand, since PET bottles and styrofoam lumps and debris can easily escape even when the movable blade 4 touches them, they are pressed by the protrusions 6a of the pusher 6 so as not to escape upward, and the movable blade 4 bites. Try to shear and crush.

[0012]

As described above, according to the present invention, by utilizing the good biting by the concave surface of the movable blade, the hopper is set up at an appropriate angle (around 60 °) with respect to the fixed blade, and the crushed material is crushed. It is used as a pressing wall, and a vertical rib is attached to the protruding part of the fixed blade to guide the crushed object to the movable blade, preventing the crushed object from escaping in the vertical and horizontal directions and ensuring reliable crushing. It can be carried out. Further, by attaching a pusher for preventing the escape of the crushed material, it is possible to prevent the floating of the lightweight material.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of an essential part.

FIG. 4 is an enlarged plan view of an essential part.

[Explanation of symbols]

1 crusher main body, 2 crushed material input hopper, 3 crushing rotor, 4 movable blades, 5 fixed blades, 6 backflow prevention pusher, 6a protrusion, 7 cylinder, 8 drive motor, 9
Vertical ribs, 10 movable blade fixtures, 11 conventional pushers

Claims (3)

(57) [Claims] 1. A crushing rotor formed by arranging a plurality of V-shaped troughs and peaks side by side, a substantially square movable blade fixed to the troughs of the crushing rotor so that two sides closely contact each other, and the crushing. A uniaxial crusher comprising a fixed blade having a V-shaped blade portion that produces a shearing force between two protruding sides of the movable blade, which is close to the mountain portion of the rotor. The movable blade fixed to the trough of the crushing rotor is formed in a concave shape so as to be spiral or V-shaped as a whole, and is positioned above the fixed blade below the inclined inner surface of the hopper on the fixed blade side. A uniaxial crusher characterized in that a triangular plate-shaped vertical rib for guiding the object to be crushed to the movable blade is projectingly provided at a position to be crushed. 2. The uniaxial crusher according to claim 1, further comprising a backflow prevention pusher which is driven forward and backward along the inclined surface of the hopper on the fixed blade side and can be stopped at a desired position. 3. The uniaxial crusher according to claim 2, wherein a protrusion for preventing escape of the crushed object is formed on the front surface of the backflow prevention pusher.