JPS63256146A - Bulky article crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a crushing device for crushing coarse materials such as wood and asphalt lumps.

[Conventional technology]

As an apparatus for crushing the above-mentioned coarse materials, there is, for example, one having a structure shown in Japanese Patent Publication No. 58-500890. The outline is shown in Figure 8. This crushing device 100 has a plurality of crushing rollers 101, 102, 103 provided generally in parallel, each having a screw-shaped crushing blade 104, 105, 106.
The rollers are rotated so that the feeding directions XI, X2, and X3 by the screws are opposite to each other, and the coarse material being fed is held between the opposing screws and crushed and cut.

[Problem that the invention seeks to solve]

The crushing effect by the crushing roller is more effective as the screw pitch becomes smaller and the cutting length becomes shorter. However, when the screw pitch is short or small, depending on the size of the coarse material being fed, the large material may not be injected between the opposing screws and may be held in a floating state above both rollers.

[Means for solving problems]

In view of the above, the present invention aims to improve the biting of coarse materials, and is characterized by a crushing device for crushing coarse materials using a pair of roughly parallel crushing rollers. Each of the pair of crushing rollers is provided with a screw-shaped crushing blade, and the screw pitch of one crushing blade is larger than the screw pitch of the other crushing blade.

[For production]

By increasing the pitch of the screw-shaped crushing blades of one of the crushing rollers, it becomes easier to drop large objects. Further, by making the pitch of the other crushing roller small, the crushing effect is good.

〔Example〕

1 to 7 show embodiments of the present invention.

The crushing device 1 has upper left and right crushing rollers 2 installed approximately parallel to each other.
．． 3, below both crushing rollers, and above-mentioned both crushing rollers 2
．． 3 and a lower crushing roller 4 provided opposite to the crushing roller 3. These crushing rollers 2.3.4 are arranged at intervals suitable for crushing as will be described later, and are driven by drive motors 6.6.4 such as hydraulic motors.
7 and rotated at the required speeds.

8 is a frame 9.1 that accommodates each crushing roller 2.3.4;
O111 is a bearing for supporting each crushing roller, and a hopper 12 is provided at the upper part of the frame 8.

The upper crushing rollers 2.3 are each provided with a screw-shaped crushing blade 15.16. The screws of both crushing blades are twisted in the same direction, and one crushing blade 15 has a single screw blade with a coarse pitch, and the other crushing blade 16 has a coarse pitch.
is the fine pitch of the double or multi-thread screw blade; for example, as shown in the figure, the screw pitch P2 is the pitch PI of the crushing blade 15! /2. As shown by the arrows Aa and Ab, both the crushing rollers 2.3 rotate in the left and right directions opposite to the direction in which they bite the supplied coarse material.
5.16 forms an inclination or rake angle θ in the feeding directions Ba and Bb as shown in FIG.

In the figure, reference numerals 17 and 18 are return blades provided on the crushing rollers 2.3, and these are short and small blades formed in the shape of a screw in the opposite direction to the screws of the crushing blades 15 and 16. .18 are provided in opposite positions. Reference numeral 19 denotes a notch provided in the crushing blade 16, which is provided as necessary to catch the coarse material being fed and to effectively feed the material.

The lower crushing roller 4 has a discharge port 22 formed by two screw-shaped crushing blades 20 and 21 with different pitches, and the length and width of the crushed material is regulated by the size and rotational speed of the discharge port 22. It is.

In the figure, reference numeral 25 denotes a counter knife, which is provided opposite to the discharge side of the lower crushing roller 4, and among the coarse materials crushed and sent out by the upper and lower crushing rollers 3.4, those stored in the discharge port 22 are stored as they are. Although the feed is allowed, the outlet 2
Those protruding from 2 are lifted up and crushed again in cooperation with the feeding of both rollers 3.4.

Further, reference numeral 26 denotes an auxiliary guide, which is provided on the opposite side of the lower crushing roller 4 from the counter knife 25 and assists the coarse material following the upper crushing roller 2 to return upward with the roller 2. It is.

In the above configuration, first, the lower crushing roller 4 is rotated at a relatively high speed in the direction of the arrow Ac, and then the upper crushing roller 2 is rotated at a relatively high speed.
．． 3 is rotated in the direction of force Ab by arrow Aa, and coarse materials are fed from the hopper 12.

The crushing procedure will be explained based on FIG. 7.

The crushing rollers 2.3 each rotate in the direction of the arrow Aa%Ab. As a result, each of the crushing blades 15 and 16 produces feed in the force direction of arrows Ba and Bb depending on the lead angle of the screw, and due to the difference in pitch, the double blades 16 and 16 first separate the troughs of the screw as shown in FIG. A large object W is held between the two. In this case, when the large object W is long, bending and folding operations are performed as shown in Figure (d).

Then, crush it as shown in the same figure (b), and then crush it as shown in the same figure (C).
Shear or cut between the cutting edges as shown.

In this case, the screw pitch PI of one of the crushing rollers 2
is made larger than the screw pitch P2 of the other crushing roller 3, so even if the coarse object W is long, its end easily falls into the screw trough of the crushing roller 2. Next, the coarse material W is held between the two crushing blades 15 and 16, and is pushed up together with the action of the feeds Ba and Bb into a vertical state, and is successively crushed and cut.

Incidentally, the coarse material W crushed by the crushing and cutting is crushed and cut in the same manner by the upper crushing roller 3 and the lower crushing roller 4.

However, the lower crushing roller 4 rotates at a higher speed than the upper crushing roller 3, thereby repeating the crushing and cutting actions at high speed, thereby increasing the amount of feed.

〔Effect of the invention〕

According to the present invention, the screw-shaped crushing blades of the pair of crushing rollers have different pitches, and one of the crushing blades has a large pitch, so that it is easy to bite the supplied coarse materials. In addition, since the other crushing blade has a relatively small pitch screw, crushing and cutting operations can be performed efficiently.

[Brief explanation of drawings]

1 to 7 show examples of the present invention, FIG. 1 is an overall plan view with the hopper removed, and FIG. 2 is an I
3 is a front view of one upper crushing roller, 4 is a front view of the other upper crushing roller, 5th
FIG. 6 is a front view of the lower crushing roller, FIG. 6 is a cutting diagram of the crushing blade, FIG. 7 is a diagram explaining the crushing action, and FIG. 8 is an explanatory diagram of a conventional crushing device. 1 is the crushing device, 2.3.4 is the crushing roller, 15.16 is the crushing blade, and PI and P2 are the screw pitches of the crushing blade. 1 other person

Claims (2)

[Claims] (1) In a crushing device that crushes coarse materials using a pair of roughly parallel crushing rollers, each of the pair of crushing rollers is equipped with a screw-shaped crushing blade, and the screw pitch of one crushing blade is equal to that of the other crushing blade. A coarse object crushing device characterized by having a pitch larger than that of a screw. (2) The apparatus for crushing large objects according to claim 1, wherein the crushing blade of one crushing roller is a single-thread screw, and the crushing blade of the other crushing roller is a multi-thread screw.