JPS61266687A - Apparatus for treating hardly dissociable old paper - 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 Field of Industrial Application The present invention is intended to easily disintegrate waste paper, etc., which has become difficult to disintegrate due to the addition of paper strength enhancers, etc., and produce useful paper. As Tokukai Akira! The one described in the Otsu-/30!2 publication is publicly known, and this one has a closed tank 1 with a secondary chamber 4 separated by a screen 3 adjacent to it, and a part close to the screen 3 that rotates at high speed. An impeller 7 is provided, a cone 6 is erected in the center, a light foreign matter collection section 13 is provided at the top of the cone 6, a solid foreign matter discharge section 18 is provided at the bottom of the closed tank 1, and the closed tank It has a configuration in which an IK pressure water inlet pipe 17 is connected, and solid matter and light foreign matter are simultaneously separated from the raw material suspension, leaving only the raw material, making raw material selection easy and effective. Let's do it well.

The swirling raw material is brought into contact with the impeller to disintegrate lumps and agglomerations of the raw material, and also removes clogging of the imperi screen, allowing the selected raw material to pass through the screen quickly.

Pressure water is sent into the sealed tank to maintain the differential pressure between the sealed tank and the secondary chamber isolated by a screen at the optimal state for screening raw materials, allowing the raw materials to easily pass through the fine mesh. Increase the degree of selection.

It has the following unique effects.

Problems to be Solved by the Invention However, since the above-mentioned conventional devices are only equipped with an impeller for the purpose of removing clogging from the screen, they are coated with urea resin, vinyl chloride, polyethylene, etc. or laminated to make them waterproof and waterproof. When processing waste paper that has been strengthened and is difficult to disintegrate, the degree of disintegration is approximately sO.
Since it was nothing more than a pot, there was a problem in that only about half of the paper raw material could be reduced to useful paper stock.

The present invention was made in order to solve the above-mentioned conventional problems, and by providing an impeller for cleaning the screen plate and a blade for defibrating the raw material in a closed tank, it is possible to reduce the amount of waste paper that is difficult to disintegrate. The purpose of the present invention is to provide a waste paper processing device capable of disintegrating paper to the same level as a kettle.

Means for Solving the Problems The apparatus according to the present invention, as shown in the embodiment shown in FIGS. 1 and 7, includes a closed processing tank 1 and a screen plate 2 on one side of the processing tank 1. Separated selected paper stock room 3
A cleaning impeller 8 having a size commensurate with the screen plate 2 and having low rotational resistance is provided in the processing tank 1 close to the screen plate 2, and a cleaning impeller 8 is provided on the other side of the processing tank 1 and is small and suitable for raw materials. It has a structure that includes disintegrating blades 13 having a shape that allows shearing and impact to be easily observed.

Function In the apparatus configured as described above, when processing waste paper raw material that has become difficult to disintegrate due to synthetic resin coating, lamination, or other treatments, the waste paper raw material is transferred to the processing tank 1 through the inlet pipe 5. When the cleaning impeller 8 of the screen plate 2 and the blades 13 for disintegrating the raw material are rotated, the waste paper material first moves to the position of the blades 13, and the blades 13 apply shear and impact to the raw material. Since the material is formed into a shape that is easy to disintegrate, difficult-to-disintegrate raw materials that are not disintegrated by the impeller 8 are well disintegrated and gradually move toward the impeller 8 side, and when the material enters the circulation part caused by the rotation of the impeller 8, swirling flow occurs. The mixed foreign matter is removed to the outside by centrifugal force, and the selected raw material from which foreign matter has been removed is passed through the impeller 8.
The screen plate 2 is continuously cleaned by the vibration-reducing effect caused by the rotation of the impeller 8, and enters the selected stock chamber 3 through the screen plate 2, which does not cause clogging, and then passes through the delivery pipe 4 to the next process. The foreign matter collected at the bottom of the processing tank 1 is washed by water sent from the water supply pipe 6, useful paper materials are recovered, and then discharged to the foreign matter layer through the discharge pipe 7.

Furthermore, when using this device to disintegrate easily disintegrated raw materials or in the process of processing the easily disintegrated components of raw materials containing a mixture of difficult to disintegrate components and easily disintegrated components, it is necessary to operate the impeller for disintegrating the raw materials. Since it is not available, it is stopped and processing is performed only by the L impeller 8.

Embodiments Below, embodiments of a processing apparatus for difficult-to-disintegrate wastepaper according to the present invention will be described with reference to the drawings.

In Figure 1 of the drawing, 1 is a closed type processing tank, and in order to smoothly swirl the raw material suspension, the cross-sectional shape is circular or round.
It is formed into a polygonal shape that does not cause dead points of circulation as much as possible,
A screen plate 2 is installed at the lower part of one side of the processing tank 1, and a screen plate 2 through which only the selected paper stock passes is installed, and a selected paper stock chamber 3 is provided outside the screen plate 2, which is separated from the processing tank 1 by the plate 2. A selected stock delivery pipe 4 is connected to the lower part of this selected paper stock chamber 3, and a raw material delivery pipe 4 is connected to the main part of the processing tank 1 so as to be located on the opposite side of the screen plate 2. An inlet pipe 5 is connected, and a water supply pipe 6 for supplying pressure water into the treatment tank 1 is connected to the appropriate place. The discharge pipe 7 is connected.

Reference numeral 8 denotes an impeller installed in the processing tank 1 close to the screen plate 2 described above, and its diameter is determined to match the screen plate in order to effectively apply the cleaning action to the entire surface of the screen plate 2. As shown in Fig. 2, it is a two-blade type having a swept back angle with respect to the rotation direction, and the blades are thin, and a ridge 9 is provided on the screen plate 2g1i in front of the rotation direction as shown in Figs. 2 and 3. The cavitake 1 is constructed so that the rotation of the impeller 8 causes the cavity 1 to be raised, and although the diameter is large, the power required for rotation is small. Outside d, Raco chamber 3 and screen plate 2
This is done by transmitting the power of the motor 1 to the shaft 10 inserted into the processing tank 1 through the belt hook 12.

Reference numeral 13 denotes a blade for disintegrating the raw material, which is provided on the opposite side of the processing tank 1 in correspondence with the impeller 8 described above, and its diameter is set to the following dimensions of the impeller 8 in order to reduce the operating resistance, and its shape is as shown in the ts1 diagram. As shown in Fig. 1, it is equipped with t thick tapered blades a whose tips gradually become thinner.
On the back side of this blade 13, as shown in FIGS. 6 and 7, a receiving blade 14 having a radial blade section is fixed to the processing tank 1, and this receiving blade 14 and the blade 13 are connected. This is a system that works together to effectively apply shearing force and impact to raw materials.
The blade 13 described above is driven by being attached to the shaft 16 of a motor 15 inserted into the processing tank 1 from the outside of the processing tank 1.

In the apparatus shown in the above embodiment, the volume of the processing tank 1 is
The diameter of the n1% screen plate 2 is lrootm,
The dimensions and shape of JE are O1 fin slit, the outer diameter of impeller 8 is 00m, and the rotation speed is lo.

R, P, M, the diameter of blade 13 /! ;Om, rotation speed 3
The machine was operated at 00 OR, P, and M to carry out selective treatment of water-resistant cardboard waste paper coated with urea resin.

As a result, the power consumption of motor [1 for impeller 8 is / !
KW, the power consumption of the motor 15 for the blades 13 is 0, and the degree of disintegration at a processing time of 209k is approximately S. The degree of disintegration was improved by asqb compared to the degree of disintegration in the SO pot when the raw materials were treated under the same conditions, demonstrating the effect of blade 13.

The figure shows an example of the use of the above-mentioned processing apparatus, in which the raw material in the raw material reservoir 17 is sent by the pump 18 to the raw material feed pipe 5 in the processing tank 1, and the raw material is carefully selected from the delivery pipe 4 of the selected paper stock chamber 3. The paper stock is sent to the next process, and the foreign matter in the treatment tank 1 is sent from the discharge pipe 7 to the foreign matter layer 19. In this example, when processing water-resistant corrugated waste paper, initially there are easily disintegrated substances in the raw material. Because of this, only the impeller 8 is rotated without rotating the blades 13, and the raw material is exclusively disintegrated by circulation.
When the material that passes through the screen plate 2 is sent to the selective paper stock chamber 3, difficult-to-disaggregate raw materials gradually accumulate in the processing tank 1 and become concentrated. When the blade 13 is stopped and the blade 13 is rotated to shear and impact the raw material in cooperation with the receiving blade 14, and pressurized water is fed through the water supply pipe 6, the disintegrated selected paper stock is transferred to the screen plate 2.
The paper is sent to the selected stock room 3 through the delivery pipe 4 and sent to the next process, leaving only foreign matter that cannot pass through the screen plate 21 in the processing tank 1. At this time, the remaining material is washed away with pressure water. The selected paper stock that is resistant to this is washed out and sent to the selected paper stock chamber 3, and the foreign matter remaining in the processing tank 1 is discharged together with water by opening the discharge pipe 7, and the next operation is carried out. It is capable of good processing.

Effects of the Invention The apparatus for processing difficult-to-disintegrate wastepaper according to the present invention applies shear and impact to the raw material using the disintegrating blades when it is fed into the processing tank. This will ensure that the waste paper is disintegrated, and the number of paper collection vehicles will increase dramatically.

The paper stock disintegrated by the blades does not clog the screen plate due to the cleaning action of the impeller, so it passes through the screen plate efficiently and quickly, resulting in high sorting ability.

Because of the force that can generate a pressure difference between the closed chamber and the selective stock chamber, the differential pressure enhances the sorting effect, allows the stock to pass through a fine mesh, and increases the degree of selection of each stock.

It has the following unique effects.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an example of the implementation of the device related to the present invention. Figure 2 is a side view of the impeller in the same as above. Figure 3 is a front view of the impeller. Figure 4 is a side view of the blade in the same as above. Figure 5 is a front view of the blade. Figure 4 is a side view of the receiving blade attached to the same. Figure 7 is a front view of the receiving blade. Fig. g is a longitudinal sectional front view showing an example of use of the same as above. In the figure, 1 is a processing tank, 2 is a screen plate, 3 is a selective stock chamber, 8 is an impeller, and 13 is a blade.

Claims (1)

[Claims] A closed type processing tank, a selected stock chamber separated by a screen plate on one side of the processing tank, and a selected paper chamber of a size commensurate with the screen plate provided close to the screen plate in the processing tank and with a high rotational resistance. A processing device for difficult-to-disintegrate waste paper, characterized in that it is equipped with a small cleaning impeller and a small disintegrating blade provided on the other side of the processing tank and shaped to easily apply shear and impact to the raw material.