JPS5971494A - Hermetically closed screen - 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 Although many inventions have been made as screens for separating and removing foreign substances in paper stock, the present invention relates to a centripetal force type screen. A centripetal force screen is a screen that supplies a base paper phase to the inside of a screen member that separates and sorts paper stock and foreign matter, and has a rotating member and blades inside the screen member. The disadvantage of this screen is that the blades rotating inside the screen member have a weak foreign matter removal power, making it impossible to increase the processing concentration of the stock stock, and as a result, a large amount of water is required, and the processing amount per unit does not increase.

In order to increase the ability of the blades to remove foreign matter, it is possible to increase the rotational speed of the blades and increase the number of times the screen member is washed.

However, increasing the rotational speed naturally increases the power, which is not desirable from the current energy saving perspective. In addition, in order to rotate the blades at high speed, the bearings and other parts must be made strong, which increases manufacturing costs.

The present invention makes it possible to efficiently separate foreign substances by imparting high rotational motion to the base paper that flows into the device. In order to apply a rotational force to the fluid, it is sufficient to send the fluid into the container from a tangential direction, but if the inflow speed is slow, swirling flow is difficult to occur, and the paper stock and foreign matter enter the inside of the screen member in an unseparated state. Because of this, the screen is likely to become clogged, resulting in a reduction in throughput. In the present invention, by applying a turning force to the inflowing base paper side by a conical member in the center of the fixed container and drawing the foreign matter to the center, when the base paper side flows into the screen member, the foreign matter is prevented from landing on the inner wall of the screen member. This made it possible to reduce clogging. The present invention will be explained in detail below.

As shown in FIG. 1, a screen portion 2 having a large number of holes is inserted into a cylindrical fixed container 1.

The screen member 2 has flanges at both ends and is fixed inside the cylinder 1. A plurality of blades 3 are rotated in the center of the cylinder 1 (= 1 digit rotating part phase).The rotating member 4 has a truncated cone shape as shown in Fig. 1. Although it is usually twisted, it has the effect of pushing out foreign matter in the opposite paper flow direction.Fixed cylinder 1
The rotating shaft penetrating portion is a truncated conical cylinder 5 that is an extension of the conical shape of the rotating member 4. The shaft is held by a bearing 8 and a bearing stand 9. There are several lids 6 on the inlet side of the cylindrical container L, and there is a foreign matter outlet in the center of the lid.]
There are 3. The lid 6 is made to protrude outside the cylindrical container 1 as shown in FIG. 1, but depending on the nature of the foreign object, it may be made into a flat plate or may be made to protrude in the opposite direction. The raw paper side that has not been separated from the foreign matter is fed into the cylindrical container 1 by a pump from a population of 1.0. The appropriate amount of paper stock liquid sent into the container moves around the fixed conical part 5 and advances to the central part. At this time, the heavy foreign matter is deposited at the bottom and the heavy foreign matter is discharged (
It is discharged from 12. The paper material liquid pushed to the center is further accelerated by the blades 3, and large foreign objects gather near the central cone (=1).The disintegrated fine fibers are blown outward and are sent to the screen assembly. 2, for selected paper stock (''1
1 and sent to the next process. Foreign matter gathered around the conical rotating member 4 at the center of the container is discharged from the lid (foreign matter discharge 1 provided in the medium heat section of 5) 13.

Although FIG. 1 shows a type in which the cylindrical container is installed horizontally, it may also be an upright type with the lid 6 at the top and the shaft 7 at the bottom.

As explained below, the present invention has a structure in which foreign matter tends to gather in the center, so clogging of the screen part can be prevented to a degree of 11J, making it possible to create a closed-type screen device with low output and high processing power. became.

[Brief explanation of the drawing]

FIG. 1 is an assembled sectional view of a closed screen showing an embodiment of the present invention.

Claims (1)

[Claims] It has a cylindrical screen member with a large number of slots or round holes inside a fixed cylindrical container, and a rotary member with a plurality of blades rotates at the center of the screen member, continuously supplying stock from one end of the fixed cylinder. In a screen with a structure for dust removal and separation, the outer shape of the rotating member that holds the blades is conical,
A closed type screen characterized by having a cone in the shape of υ in phase with the rotating member in the rotating part of the fixed cylindrical tank.