JPS59223388A - Coarsely crushing apparatus of compressed fiber stock material - 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 is a method of compressing and distributing bulky fibrous raw materials, usually called bulk raw materials, into cubes for ease of transportation and storage. For example, in order to protect strained wood resources, waste paper, which has recently become more important as a raw material for papermaking than wood chips, In this case, most of the major sources of generation, or in other words, recovery sources, are located in large areas, and the paper and pulp mills that use them are often located in rural areas due to location conditions such as access to water. Therefore, waste paper is collected at a recycling wholesaler using a large hydraulic packaging machine called a baling press.
It is compression molded into a large cube of m x 2 m and supplied to the distribution stage. Such large cubes are too thick to feed directly into the pulping machine at the Receiving Light pulp and paper mill, so primitive methods such as dropping them from a height with a forklift are used to crush them. Therefore, immediate improvement was desired.

Conventional crushing equipment consists of a combination of a rotating blade and a fixed blade placed around the rotating blade on the inner periphery of a cylinder, and the raw material is crushed by impact or shear caused by the rotation of the rotating blade. This method involves crushing in a closed casing with a raw material inlet and outlet, and the dimensions of the raw material inlet are limited, and the fibers are cut, so compressed fiber raw materials such as waste paper bales are crushed.
! It was not suitable for pulverization.

Therefore, the present inventor has determined that compressed fiber raw materials such as waste paper bales, etc.
Focusing on the fact that it is good to return the state to the state before the compression process, we have developed a crushing device for compressed male raw materials that can coarsely crush raw materials with fewer fiber cuts. be.

Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

In the figure, 4 is a rotating drum that unravels the compressed fiber raw material 10.

This rotary drum 4 is arranged on a pair of vertical frames 1.1 with a shaft 2 rotatably bridged therebetween, and is rotated by a motor 3 via the shaft 2. A large number of elongated crushing blades 5 having a diameter of 3 mm or more and a length of /Q+nm or more in the rotational direction are stacked on the outer periphery of the rotating drum 4. This crushing blade 5 is made into a prismatic shape with the above dimensions because a sharp blade will damage the fibers and there is a condyle for maintenance.
Sufficient coarse crushing force was obtained, and it was also the most effective in terms of durability and maintenance. Furthermore, it has been found through experiments that the spacing between the crushing blades 5 can be much wider than that of conventional crushers, and can be set to a pitch that does not change the size of the raw material to be coarsely crushed before compression. The crushing blades 5 may be detachably attached to the rotating drum 4, or may be arranged in a staggered manner in which the next row of crushing blades 5 is located between every other adjacent crushing blades 5, 5. It may be arranged in a shape.

On the side of the rotating drum 4 where the rotating drum 4 rotates upward (in the illustrated example, the right side of the rotating drum 4 assuming that the rotating drum 4 rotates to the left), there are A feed chute 20 for feeding raw materials is arranged at a lower height.

The reason why the above-mentioned feeding chute 20 is set to the side where the rotating drum 4 rotates in two directions is because if the rotating drum 4 is rotated in the opposite direction, the coarsely crushed raw material will become block-shaped and the rotating drum 4 will rotate between the feeding chute 20 and the rotating drum 4. This is because it becomes impossible to drive if it gets caught between the two.

Further, the feeding chute 20 includes an inclination angle adjuster 30 that changes the inclination angle in conjunction with an increase or decrease in the load current of the motor 3 for driving the rotating drum 4. When the compressed fiber layer 'B10 is fed by sliding from the feeding chute 20 using its own weight, if the inclination angle of the feeding chute 20 is too steep, it will be pressed against the rotating drum 4 more than necessary, resulting in overload or digging. It may become impossible to drive due to The self-sliding angle of the compressed fiber raw material 10 on the feeding chute 20 is
If the compressed fiber raw material 10 is heavy, it slides at a low angle,
If it is light, it will not start sliding unless you take a high angle. It is also recognized that the self-sliding conditions vary depending on the sliding resistance of the surface of the feeding chute 20, the humidity of the raw material, the physical properties, etc. Therefore, by utilizing the fact that the load current of the motor 3 for driving the rotating drum 4 is proportional to the load of coarse crushing, the load current value of the rotating drum 4 under ideal coarse crushing conditions in which constant coarse crushing conditions are continued. is used as a reference, and the inclination angle of the feeding chute 20 is controlled by the current value.

That is, in the illustrated example, the lower end of the feeding chute 20 is pivotally supported by a shaft 22, and an inclination angle adjuster 30 made of a cylinder is disposed at the rear end. The load current of the motor 3 is detected by an ammeter 27, and the load current value detected by the ammeter 27 is compared and judged by a control panel 28 to drive the tilt angle adjuster 30. At this time, if the load current value is lower than a certain value, increase the inclination angle of the feeding chute 20, and conversely, if it is higher than the certain value, reduce the inclination angle until the constant value is reached, so that operation can always be performed under optimal conditions. It is.

In addition, 8 in the figure is a pre-loading chute placed in front of the feeding chute 20.
9 is a conveyor for discharging the disassembled raw materials; 11 is a side plate of the discharge conveyor 9; 23 is a side plate of the feeding chute 20; 6 is an upper cover of the rotating drum 4; 26 is a lower cover of the rotating drum 4. . Further, 7 is a discharge port opened between the lower end of the upper cover 6 and the 1-output conveyor 9, and 29 is a board with a slit 1- attached to the lower end of the feeding chute 20 through which the crushing blade 5 can pass. , 24 is a presser body which is rotatably supported by a fulcrum 25 and applies a brake to the sliding of the compressed fiber raw material 10 when the compressed fiber raw material 10 is pushed up. The coarse crushing device has a structure as described in ``2'', and can automate and save labor in the work of unraveling the compressed fiber raw material.

In addition, in the device of the present invention, the crushing blade 5 is an elongated cylindrical shape, so that it does not cut the fibers, which impairs durability.
Maintenance is also easy.

Furthermore, in the apparatus of the present invention, since the feeding chute 20 is disposed on the side where the rotating drum 4 rotates upward, the coarsely crushed raw material is transported as the rotating drum 4 rotates.
Since the material rotates over the rotating drum 4 and is transferred onto the discharge conveyor 9 on the opposite side, accidents such as inoperability due to raw materials being injected between the rotating drum 4 and other equipment such as the feeding chute 20 are prevented. Moreover, this feeding shoe 1-20 is connected to the motor 3.
The inclination angle can be adjusted in conjunction with the increase or decrease of the load current, allowing coarse crushing to be carried out under optimal conditions.

[Brief explanation of the drawing]

The drawing is a cross-sectional view showing an embodiment of a crushing apparatus for compressed fiber raw material according to the present invention. 3 - Motor 4 - Rotating drum 5 - Crushing blade
10 ~ Compressed fiber raw material 20 ~ Feeding chute
30~Inclination angle adjustment tool fee Attorney Hirai, patent attorney

Claims (1)

[Claims] / A large number of elongated crushing blades 5 having a width of 3 mm or more and a length of / □mm or more in the rotation direction are arranged on the outer periphery of the rotating drum 4, This is an apparatus for crushing compressed fiber raw materials, in which a feed chute 20 for raw materials is disposed on the side where the drum 4 rotates upwards, and the raw material feed chute 20 is gradually lowered toward the rotating drum 4. ! , Claims in which the feeding shoe 1-20 has an inclination angle wJ adjustment tool 3o that changes the inclination angle in conjunction with an increase or decrease in the load current of the motor 3 for driving the rotating drum 4. 8. A crushing device for compressed fiber raw material according to item 7.