JPS61102494A - Apparatus for beating 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] (Industrial application field) The present invention relates to an apparatus for disintegrating waste paper, pulp, etc.

(Prior art) A medium liquid and bale-shaped waste paper are stored in a disintegration tank whose lower part is shaped like a circular funnel, equipped with a rotor at the bottom, and whose upper part is cylindrical and continuous with the upper edge of the funnel-shaped part. A device that disintegrates waste paper by rotating a rotor is already known, and a model that prevents caking due to mutual entanglement of M disintegrated substances, etc., which are mixed with waste paper in the center of the tank, has also been proposed. .

(Problems to be Solved by the Invention) Although bales of waste paper are put into a tank during continuous disintegration treatment, the concentration of liquid in the tank is about 4% of disintegrated material. Due to the air contained in the bale-shaped waste paper, the input material sinks immediately and is sucked out, causing a long period of time in which it floats unnecessarily without being disintegrated, resulting in poor work efficiency, and in this case, the rotational speed of the rotor Even if the engine is increased, cavitation will occur and the engine will idle, resulting in wasted operating power. Furthermore, in the past, the flow in the tank was circulated in a fixed direction at the same speed, which caused the difficult-to-disaggregate substances to become entangled with each other in the center of the tank, causing a commotion, which gave support to the disintegrating process. In the case of using two rotors to prevent the occurrence of condensation in the tank, the equipment is complicated and expensive, and operation management is troublesome.

(Means for Solving the Problems) The present invention eliminates the above-mentioned conventional disadvantages, and has a circular funnel-shaped lower part, a rotor at the bottom, and an upper part that is continuous with the upper edge of the funnel-shaped part. A disintegration tank having a cylindrical part is characterized in that a part of the circumferential wall of the upper cylindrical part is inclined inward, and the inclined wall is used as a chord cut from a part of the circle to form a deformed circle inside the cylindrical part. .

(Example) In Fig. 1, (1) is a disintegrating tank in a disintegrating device, the lower part of which is a circular funnel-shaped part (1a), and the upper part continuous to the upper edge thereof is formed into a cylindrical part (1b). do.

A rotor (2) was provided at the bottom of the lower circular funnel-shaped part (1a), and the bale-shaped waste paper thrown into the liquid was disintegrated by the liquid flow generated in the tank (1) by the rotation of the rotor (2).

A part of the circumferential wall (3) of the upper cylindrical part (1b) is inclined inward to form a deformed circle with the inside of the cylindrical upper part (1b) as a chord, which is a part of the circle cut by the inclined wall (3). did.

In the illustrated example, the inclined wall (3) is formed into a curved plate shape as shown in FIGS. 2 and 3, and its lower edge is continuous so as to match the upper edge of the lower circular funnel-shaped portion (1a). However, the inclined wall (3) is formed into a bent linear cross section as shown in FIG. This is optional, but the point is to create a cylindrical part (1
b) is characterized in that the inside thereof is formed into a deformed circle.

(Function) - In the above configuration, when the rotor (2) is rotated in the direction of the arrow shown in FIG. 2, two types of three-dimensional liquid flows are generated within I (1). That is, in the vertical direction in the tank (1), as shown in FIG. Rapid and powerful liquid flow B directed toward
and the rotor (2
), the liquid flow C heads in the same direction toward the recirculation junction a;
After colliding with the inclined wall (3), the liquid is forced to flow along this wall, creating a rapid and strong liquid flow toward a point deviated from the center of the tank, and due to the synergy of these liquid flows, it flows into the tank (1). It was made to form multiple streams with different concentration points and different forces.

Therefore, due to these double flow effects, unlike conventional circulation currents concentrated in a single point at the center of the tank in a constant direction and at a constant speed, there is no boundary between difficult-to-disintegrate substances, etc., and in the liquid surface area, two vortex centers Because of parts a and b, a wide range of valleys are formed, and the liquid flow on one side is strong, so the bale-shaped waste paper fed into the tank is easily sucked in, and as a result of experiments, the conventional one The injected material was suspended for nearly 2 minutes, but in the case of the present invention, it is sucked into the liquid in about 10 seconds, and the disintegration efficiency is improved by about 30% compared to the conventional method, thus increasing the efficiency of continuous work. I was able to do that.

(Effects of the Invention) According to the present invention, a part of the peripheral wall of the upper cylindrical part of the disintegration tank is inclined inward, and the inside of the cylindrical part is formed into a deformed circle with a chord formed by cutting a part of the circle with the inclined wall. As a result, a double flow with three-dimensional spiral centers and different forces is created in the tank.
Therefore, the conventional defect of a single liquid flow concentrating its circulation in the center of the tank and forming a border at the bottom is eliminated, and the synergistic effect of the double flow allows the two vortices in the center of the tank to mutually interact. This eliminates the formation of borders caused by difficult-to-disintegrate materials in the center of the tank, and the bale-shaped waste paper that is continuously fed into the tank is separated from the wide trough at the confluence of double flows on the liquid surface. On the other hand, the liquid is quickly and accurately sucked into the liquid by the strong liquid flow force, increasing the +m solution work efficiency, and these double flows are generated by the rotor making one revolution by making the inner diameter of the cylindrical part in the upper half of the tank a deformed circle. The operating power has the effect of being economical.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional side view, FIG. 2 is a plan view, and FIG. 3 is a sectional view taken along the line ■-■ in FIG. FIG. 3 is a sectional view corresponding to FIG. 3 showing mK. (1) ...Fabricating tank (1a) ...Lower circular funnel part (1b) ...Upper cylindrical part (2) ...Rotor (3) ...2 people outside the inclined wall Figure 1 Figure 2 Figure 3 Figure 4-FICI”

Claims (1)

[Claims] The lower part is a circular funnel-shaped part, and the bottom part is equipped with a rotor,
In a disintegration tank with a cylindrical upper part continuous to the upper edge of the funnel-shaped part, a part of the circumferential wall of the upper cylindrical part is inclined inward, and the inclined wall is used as a chord of a part of a circle to form a cylindrical shape. A disintegrating device for waste paper, characterized in that the inside of the section is formed into a deformed circle.