JPH04300660A - Grinder - Google Patents

Abstract

PURPOSE:To provide an inexpensive two-screw type grinder simplified in constitution and having grinding capacity not inferior to that of a three-screw type grinder. CONSTITUTION:Two screws 3, 3 are parallelly supported in a housing 2 in an adjacent state by shafts and a lower cutter 7 having fixed blades 71 along both end edges thereof is mounted at the central part of the bottom part 22 of the housing 2 in the same direction as the axial direction of the screws 3, 3 and the fixed blades 71 of the lower cutter 7 are arranged in close vicinity to the blades longitudinal direction of the cutter 7.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin-screw crusher equipped with two screws.

0002

[Prior Art] Conventionally, two screws are supported adjacent to each other in parallel on the same horizontal plane in a housing having an input port formed at the top and a discharge port formed at the bottom. A twin-screw type crusher in which the material to be crushed, which is input from the input port, is driven in the direction in which it is rolled inward and the feeding direction is the same, so that the material to be crushed is crushed by these screws and then discharged from the discharge port. machine is provided.

[0003] Furthermore, the two screws are provided so that the material to be crushed is rolled inward and the feeding directions are opposite to each other, and an additional screw is provided below between these screws. There has also been provided a three-screw type crusher that crushes the material to be crushed using a screw.

0004

[Problems to be Solved by the Invention] When comparing the twin-screw type crusher and the three-screw type crusher, in the twin-screw type crusher, the two screws crush Objects to be crushed that have fallen are not crushed any further and are sent to the discharge port, so the size of the objects to be crushed is large and varies, resulting in poor crushing ability.
There is a problem in that it becomes an obstacle when, for example, the crushed object is transported under vacuum.

On the other hand, a three-screw type crusher can crush any object to be crushed regardless of its shape, but it requires three expensive screws and the drive mechanism for these screws becomes complicated. was there.

[0006] The present invention is simple in construction and inexpensive;
Has a crushing capacity comparable to a 3-screw type crusher2
The purpose is to provide a shaft screw type crusher.

[0007]

[Means for Solving the Problems] The crusher of the present invention has two screws adjacently supported in parallel in a housing having an input port formed at the top and a discharge port formed at the bottom. , these screws are configured so that they are driven in a direction in which the material to be crushed inputted from the input port is wound inward, and the feeding directions are mutually opposite directions, and fixed blades are provided at both end edges in the center of the bottom of the housing. A lower cutter having a lower cutter is installed in the same direction as the axial direction of the screw,
The fixed blade of the lower cutter is arranged close to the blade of each screw, and its longitudinal direction is formed in an uneven shape.

[0008]

[Operation] When the crusher crushes the object, the object that is crushed between the screws and falls to the bottom of the housing is separated by the fixed blade of the lower cutter provided at the center of the bottom of the housing and the blade of the screw. While being further crushed, it is sent to the discharge port and discharged.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of a crusher according to the present invention.

In the figure, reference numeral 2 denotes a housing of the crusher 1, and the upper part of the housing 2 is opened as an input port 21. Inside the housing 2, two screws 3, 3 are arranged adjacent to each other in parallel on the same horizontal plane, as shown by the two-dot chain line in FIG. A motor 35 is connected to one end of each of these screws 3, 3, and the motor 35 causes the two screws 3, 3 to rotate and feed the material to be crushed, which has been inputted from the input port 21, in the direction of rolling it inward. They are configured to rotate in opposite directions. In the bottom part 22 of the housing 2, discharge ports 23, 23 are formed for discharging the crushed material sent by the screws 3, 3.

A distribution plate 4 is provided above between the two screws 3, 3. The distribution plate 4 has a convex upper end 41 so as to distribute the input material to be crushed to the respective screws 3 and 3, and both ends of the distribution plate 4 in the longitudinal direction are fixed to the inner wall of the housing 2. .

An upper cutter 5 having fixed blades 51, 51 on both longitudinal edges is provided at the bottom of the distribution plate 4. Each of the fixed blades 51, 51 of the upper cutter 5 has an uneven shape in its longitudinal direction, and the blade 31 of each screw 3
The fixed blades 51, 51 and the blades 31 of each screw 3 crush objects passing therethrough.

Further, on both side walls of the housing 2, a side cutter 6 having a fixed blade 61 on one side edge is attached to the screws 3, 3.
is arranged in the same direction as the axial direction of the The fixed blade 61 of the side cutter 6 has an uneven shape in its longitudinal direction.
It is arranged close to the blade 31 of each screw 3, and the fixed blades 61, 61 and the blade 31 of each screw 3 crush the object passing therethrough.

Further, in the center of the bottom part 22 of the housing 2, as shown in FIGS. 1, 2, and 4, a lower cutter 7 having fixed blades 71, 71 on both side edges is attached to the screws 3, 3.
It is fixed by a bolt 72 via a mounting member 8 in the same direction as the axial direction. The fixed blades 71, 71 of the lower cutter 7 are formed in an uneven shape in the longitudinal direction, and are arranged below between the screws 3, 3 and close to the blade 31 of each screw 3 by the mounting member 8. , this fixed blade 71,7
1 and the blades 31 of each screw 3 crush the object to be crushed passing therethrough.

The mounting member 8 positions the lower cutter 7 in a predetermined position and prevents the material to be crushed from remaining in this portion (the center of the bottom portion 22).

Further, the bottom part 22 of the housing 2 has a structure shown in FIG.
As shown in FIGS. 4 to 4, a plurality of divided fixed blades 9 are provided protrudingly close to the blades 31 of each screw 3. As shown in FIGS. In this example, the divided fixed blade 9 is divided into three parts in the rotational direction of the screw 3, and the three divided parts are attached to the screw 3.
They are arranged in three rows in the feeding direction, and the divided fixed blades 9 and the blades 31 of the screws 3 crush the object passing therethrough. Note that the number and arrangement positions of the divided fixed blades 9 are not limited to this example.

Reference numeral 25 in FIGS. 1 and 2 is a sloped plate provided above the discharge port 23, and the sloped plate 25 prevents the input material to be crushed from falling directly from the discharge port 23 without being crushed. prevent.

Next, the operation of the crusher constructed in this way will be explained.

[0020] The material to be crushed inputted from the input port 21 is distributed to the left and right screws 3, 3 by the distribution plate 4. Since each screw 3 rotates in a direction that involves the object to be crushed inward, the object to be crushed is caught between the screws 3, 3 by the fixed blades 51, 51 of the upper cutter 5 and the blade 31 of the screw 3. It enters between the screws 3, 3 while being roughly crushed to the extent that it does not get crushed, and is finely crushed between these screws 3, 3. The material to be crushed between the screws 3, 3 is sent in the feeding direction of each screw 3,
It is discharged from each discharge port 23, 23.

During the crushing of the object to be crushed, the object to be crushed that has passed between the screws 3 is sent to the lower cutter 7 by the weight of the object to be crushed and the downward rotational force of each screw 3. It is further crushed by the fixed blades 71, 71 of the lower cutter 7 and the blades 31 of each screw 3.

Further, a part of the material to be crushed that has passed through the fixed blade 71 of the lower cutter 7 and the blade 31 of each screw 3 is
When passing through the divided fixed blades 9 on the way to each discharge port 23 by each screw 3, the divided fixed blades 9 and the blades 31 of each screw 3 are also crushed.

Further, the material to be crushed that is scraped upward between the divided fixed blades 9, 9 by the rotational force of each screw 3 is moved between the fixed blade 61 of the side cutter 6 and the blade 3 of each screw 3.
It is also crushed between 1 and 1.

As mentioned above, the fixed blade 5 of the upper cutter 5
1 and the blades 31 of each screw 3, the material to be crushed is coarsely crushed in advance and then sent between the screws 3, 3, so that the material to be crushed, which is introduced between the screws 3, 3, is caught between the screws 3, 3. In addition to preventing the problem of stopping the screws 3 and 3, the fixed blades 51, 61, 71 of each screw 3 and each cutter 5, 6, 7 can be prevented from fracturing between the screws 3, 3.
The crushed material can be discharged from the discharge port 23 in a more finely crushed state. In particular, even at the stage where the material to be crushed is sent in the feeding direction by the screw 3,
Since the object to be crushed is sent while being crushed by the fixed blade 71 of the lower cutter 7 provided at the center of the bottom part 22 of the housing 2 and the blade 31 of the screw 3, the object to be crushed can be crushed even more finely.

The crusher 1 configured as described above is installed at the input section of a garbage storage device into which garbage is inputted through, for example, a chute, and the garbage is crushed by this crusher and then stored in the garbage storage device. Applies to.

Furthermore, since the object to be crushed can be finely crushed, the object after being crushed can be easily transported by vacuum transportation or the like.

[0027]

As described above, according to the crusher of the present invention, after the material to be crushed is crushed between the screws and falls to the bottom of the housing, the material is crushed by the lower cutter provided at the center of the bottom of the housing. The fixed blade and the screw blade further shred the material before it is sent to the discharge port, so the material to be shredded can be shredded even more finely, and the shredding machine is simple in construction, inexpensive, and has excellent shredding ability. can do.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall configuration of a crusher according to the present invention.

FIG. 2 is a sectional view of the crusher.

FIG. 3 is a plan view of the crusher with screws omitted.

FIG. 4 is a plan view showing the lower cutter provided at the bottom of the housing and its surrounding area.

[Explanation of symbols]

1　Shredding machine 2 Housing 21 Input port 22 Bottom 23　Discharge port 3 Screw 7 Lower cutter 71 Fixed blade of lower cutter

Claims (1)

[Claims] Claim 1: Two screws are rotatably supported in parallel and adjacent to each other in a housing having an input port formed at the top and a discharge port formed at the bottom. The housing is configured to be driven in a direction in which the crushed material is wound inward and the feeding directions are opposite to each other, and a lower cutter having fixed blades at both end edges is provided at the center of the bottom of the housing in the axial direction of the screw. , the fixed blade of the lower cutter is disposed close to the blade of each screw, and the fixed blade of the lower cutter is formed in an uneven shape in the longitudinal direction.