JPS5888040A - Lump 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 The present invention relates to a lump crusher that continuously crushes lumps such as dehydrated cake discharged from a pressure dehydrator during transportation.

Traditionally, for crushing and solidifying lumps such as dehydrated cakes, there have been batch-type kneading machines equipped with stirring blades in the tank, and continuous kneading machines with screw feeders. It is common to use a system where the waste is transferred to a final disposal state. However, when the dehydrated cake, which is a wet plate, is stored in a hopper, its specific volume becomes large, which requires large-scale equipment and costs.
In terms of surface area, the proportion of the total equipment was not necessarily small.

For example, in the hammer rotary type crusher, which is a typical crusher,
If a strong impact force is applied at a high rotation speed, it becomes sticky because it is wet, and if a low impact force is applied at a low rotation speed, it will not become fine and the shape will not be uniform.

On the other hand, a method of extruding the wet cake through a die to make it fine is often used, but this method has the disadvantage that the machine becomes large and the power consumption becomes very large.

The object of the present invention is to provide an apparatus that can perform such difficult wet crushing at low cost and with little energy.

In view of the drawbacks of the prior art, the present invention crushes the lumps, such as dehydrated cakes, by a crusher consisting of crushing and mixing blades radially attached to a rotating shaft while transporting the lumps by a conveyor. It is an object of the present invention to provide a crusher for a lump that is capable of colliding the lump with the inner surface of a cover covering a blade to further crush the lump and mixing a solidifying agent into the crushed lump.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows an embodiment for crushing a dehydrated cake discharged from a pressure dehydrator. Cake A storage hopper 6 and crusher 4
will be installed.

As shown in FIG. 2, the hopper 6 and the crusher 4 are supported and fixed on pedestals 5 installed on both sides of the conveyor 2 in the transport direction, and a long receiving plate 6 is installed between the pedestals 5. The lower surface of the conveyor 2 is supported by the receiving plate 6, and the dehydrated cake A is
This prevents the belt from bending due to the weight of the belt.

The hopper 6 stores the dehydrated cake A that is conveyed and supplied from a separate conveyor (not shown), and the opening of the gate 7 allows the conveyor 2 to convey the dehydrated cake A in the direction of the crusher 4. By adjusting the top and bottom, the amount of dehydrated cake A to be transported can be adjusted.

Further, the crusher 4 crushes the dehydrated cake A conveyed on the conveyor 2 by the rotation of a crushing mixing blade 8, and the outer periphery of the blade 8 is covered with a cover 9 to prevent the dehydrated cake A from scattering. That is, conveyor 2
A rotating shaft 10, which is disposed perpendicular to the conveying direction, is rotatably supported by a bearing 11 erected on the pedestal 5. A plurality of blades 8 are provided protruding in the axial direction,
The rotating shaft 10 is driven by a first drive device 12 such as a motor.
Fixed and rotatable. The cover 9 has a blade 8
The cover 9 is formed into a semicircular shape that does not touch the circumferential surface of the tip due to rotation of the conveyor 2, and the lower ends of both sides have a gap between the conveyors 2 so that the dehydrated cake A can pass through.This cover 9 is sealed on both sides. It is fixed on the pedestal 5.

The present invention has the above-mentioned configuration, and the conveyor 2 is driven to transfer, the gate 7 is opened, and the dehydrated cake A is stored in the hopper 6.
If the dehydrated cake A is sequentially conveyed and the blade 8 is rotated along the conveying direction of the conveyor 2, the dehydrated cake A will be crushed by the rotational force of the blade 8 during transportation. Furthermore, due to the centrifugal force of rotation of the blade 8, the dehydrated cake A collides with the inner surface of the cover 9 and is further crushed.

The number of crushers 4 may be one depending on the crushing capacity, or multiple crushers may be installed in succession in the transport direction of the conveyor 2 as shown in the first diagram, and each crusher 4 sequentially crushes the dehydrated cake A. You can do it like this. Furthermore, when a plurality of crushers 4 are installed, the rotational speed of each blade 8 may be the same, or the crusher 4 near the hopper 3 may be rotated at a low speed, and the crusher 4 may be rotated at a high speed sequentially. can be arbitrarily selected depending on the state.

Although the blade 8 may have a simple flat shape,
As shown in FIGS. 1 and 2, if the tip of the blade 8 is curved in the opposite direction to the rotation direction and this curved tip is twisted parallel to the axial direction of the rotating shaft 10, the dehydrated cake can be removed. A
The contact area with the dehydrated cake A is increased, which increases the scraping ability, that is, the crushing ability, and the crushing efficiency of the dehydrated cake A can be improved by causing a large amount of dehydrated cake A to collide with the cup (-9). can.

Table 1 shows the results of experiments in which the present invention was used to crush dehydrated cake A during transportation by conveyor 2 under various conditions. This enabled easy-to-handle subdivision, and very good results were obtained.

For example, the dehydrated cake A crushed as described above is
As shown in the figure, the cake is transferred to another conveyor B, and a fixed amount of dehydrated cake solidifying agent C is continuously supplied onto this conveyor B, and the cake A is further crushed by the same crusher as above and mixed with the solidifying agent at the same time. As described above, according to the present invention, a dehydrated cake can be continuously crushed into a state that is easy to handle while being transported by a conveyor, and the crushing process is Since this is carried out in the middle of the conveyor, the overall equipment can be downsized, requiring less installation space, and the mechanism is simple, requiring low power and easy maintenance.

In addition, by linking the discharge process of dewatering equipment with this device, it is possible to supply a fixed amount of solidifying agent to the dehydrated cake on a conveyor to continuously generate a solidified cake, which is used in many water treatment plants currently in operation. It has the advantage that the integrated process of solidifying the cake can be easily disposed of as landfill material.

It goes without saying that the present invention is not limited to the above applications, but can be widely used as a crusher for other wet lumps in general.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of the entire apparatus showing an embodiment of the present invention, FIG. 2 is a sectional view of the main part, and FIG. 3 is a schematic front view of a state in which a solidifying agent is mixed into a crushed cake. 2 is a conveyor, 3 is a hopper, 4 is a crusher, 8 is a blade, 9 is a cover, and 10 is a rotating shaft.

Claims (3)

[Claims] (1) Conveyor 2 that conveys lumps such as dehydrated cakes
Above, within the width of this conveyor 2, a crushing blade 8 is installed.
A block crusher characterized in that a cover 9 rotatably supports the blade 8 and has a cake collision surface along the rotating peripheral surface of the blade 8. (2) A lump crusher according to claim 1, characterized in that a plurality of crushers each comprising a crushing blade 8 and a cover 9 are connected and installed in the conveying direction of the conveyor 2. (3) A lump crusher according to claim 1, wherein the crushing blade 8 is adapted to cover the entire width of the conveyor 2.