JPS58122012A - Apparatus for separating fiber suspension - 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 relates to a fibrous suspension separation device having a generally rotationally symmetrical casing, which is capable of generating a rotating flow of fibrous suspension, for example by means of a rotor.

This type of separation device is known from West Germany L@Patent Publication No. 2514
This method is known from Japanese Patent No. 162. This device, which also functions as a pulper, serves to deliver a predetermined amount of material that has undergone a meso-sphere washing process to the pulper. Suitable locations for this purpose include locations where the pressure within the pulper is relatively low and located generally on the axis of rotation of the rotor, which is closely aligned with the axis of rotational symmetry of the body of the pulper casing. .

The main purpose of the present invention is to not disturb the flow inside the pulper casing much in the process of returning a predetermined amount of material to the pulper, and as a result, the discharge process of different components is not disturbed and is as simple as possible. It is an object of the present invention to provide a separation device capable of separating wi amount of impurities from an outlet for light components.

According to the invention, a fibrous material in the paper industry with a separate outlet for relatively voluminous components! ! iii. A turbid liquid storage device, comprising: a casing having a generally rotationally symmetrical shape for realizing a generally rotational flow to simulate the rotational effect of the fibrous S droplet liquid; and a central portion of the rotational flow. Nearby, a device for introducing a portion of the material for post-cleaning, coaxial with the central axis of said rotary workpiece and coaxial with the connection of the outlet pipe for the light fraction. and an annular chamber communicating with an inlet pipe for introducing a portion of the material, the bulk chamber opening into the casing generally in the direction of the central axis of the rotating flow. A device is provided, characterized in that the opening is M-shaped.

It has been found that such a separator can effectively separate impurities and can operate with minimal disturbance compared to known separators.

A similar effect can be achieved by a type of separating device called a disk separating device, vertical shifter, or the like. The latter type includes a rotationally symmetrical filter plate and a rotor that rotates in opposition to the filter plate.

The present invention can also be applied to a device called a hydrocyclone. In a separation device that can separately discharge light impurities and heavy electric impurities, as described above, the major prize components are After washing with a cyclone, the material is returned to the separator to obtain a suitable reliability.

According to the invention, the material to be discharged, diluted by the corpuscle washing in the cyclone, is discharged from the separation device - the West Germany! Unlike what is stated in the official gazette, considering that no load is applied to the pump or other parts attached to the separation device, the increase in the volume of heavy impurities from the device will cause the separation. It can be seen that the effect is improved.

Preferred embodiments of the invention will now be described with reference to the accompanying drawings.

As is clear from the longitudinal cross-sectional view of FIG. It is connected in a generally tangential force direction with respect to the force direction.

The rotor (2) is for crushing the lumps *' of the fibrous component.

This vertical cross-sectional view also shows pipe joints for discharging various components from the casing. Among them, the pipe joint (7) is for a component containing large weight impurities at once, and the pipe joint (8) is for a component containing a high concentration of impurities.

The pipe fitting (7) for the heavy component is connected tangentially to the casing (1). The pipe fitting (8) for the light component is connected to the casing on the opposite side of the filter plate. It is installed on the end wall □□□, and is located in front of the filter plate.
It is approximately coaxial with the rotation axis of the rotor (2) which rotates 12J.

This rotor (2) generates turbulent flow within the casing (1), which is cylindrical in this embodiment, and forms a low-pressure portion around the central axis of rotation.

The filter plate is disposed in front of the outlet chamber (8) for the desired component, and the outlet chamber (3) has a silver-threaded outlet fitting (2) for the desired component. There is.

The rotor (2) is driven via a rotating shaft t4) and a shaft coupling (5). The light and heavy components are mainly concentrated in the low-pressure area, that is, around the rotor's central axis of rotation (b), so @
The light components are discharged in high concentration from the light component outlet fitting (8).

However, in order to separate the mass components, it is not possible to obtain suitable results by providing only a single outlet. It is therefore advisable to return the material from the fitting (9) into the casing, although the heavy or coarse impurities have been largely removed, but may also contain a significant amount of light components, including small flake-like impurities. This component preferably consists of a component discharged from the heavy component pipe fitting (7) and passed through an intermediate separation process.
Yes. This intermediate separation process is preferably carried out using a hydrocyclone or the like (which can separate violet impurities but cannot sufficiently remove light components).

According to the invention, by structuring the casing extension 06) to form a concentric mass chamber (b) with respect to the outlet fitting (8), the inside of the pulper vi: By introducing components into the pulper during the separation process, the amount of light components discharged can be increased without impairing the function of the pulper and without interfering with the discharge of each component.

Funnel-shaped guide surface Cl8 as shown in FIG.
), the above effects can be further improved.

In this embodiment, the outer diameter of the block chamber is selected such that the cross-sectional area of the outlet pipe joint (8) and the cross-sectional area of the annular chamber C11) are approximately equal. However, depending on the case, the cross-sectional area of the annular chamber α° C. can also be made larger or smaller than the cross-sectional area of the outlet fitting (8).

The length of the lump chamber (11) and its outer diameter p are somewhat smaller,
Alternatively, it is also possible to increase the size. However, in order to keep the total length of the pulper within a certain range, it goes without saying that it is better not to make the length of the annular chamber excessive.

The pipe joint (9) for the component of the predetermined value described above is preferably connected to the inner surface of the casing so as to be inclined radially outward.

This situation is shown in FIG. As shown by the dashed line in Figure 2, the fitting (9) is approximately tangential force
It is possible, but not necessary, to connect the

To facilitate access to the valley pipe, an extension α6) of the casing, which together with the light component fitting (8) forms an annular chamber, is provided on the outside of the casing (1). In this regard, it should be added that if the extension of the casing protrudes into the separator, the resulting turbulence-enhancing effect will result in a suitable four-pot structure.

Although not shown, it is preferable to provide a valve in the container pipe so that the flow rate in the trough can be adjusted to an optimal value.

FIG. 3 shows a longitudinal section through a separation device (21) of the type called a vertical shifter, adapted to operate under pressure above atmospheric pressure.

In this embodiment, the inlet tube lantern is
The outlet fitting for the desired component is indicated by the symbol (b)j,
The outlet pipe fitting for the component containing heavy impurities is changed to the code, and the outlet pipe fitting for the component containing heavy impurities is
They are each indicated by the symbol μs).

The components to be reintroduced into the casing are connected to the joint (19)
It is then sent to an annular chamber CI which is provided in the extension α6) of the casing coaxially with respect to the pipe fitting μs). Adjacent to the outlet fitting μs) for the light component, this part is provided with a funnel-shaped guide surface 1) which opens toward the interior of the casing along the axial force direction.

In this embodiment of the vertical shifter set, the rotation center axis M
A rotor (4) having separating blades extending generally parallel to a→ is adapted to rotate in front of the rotationally symmetrical filter plate.

The desired component passes through all the filter plates and is sent to the outlet pipe joint (b) for the desired component.

In this separation device, a rotating flow of fibrous suspension is formed in a cavity defined by a filter plate. The rotor (not shown) is driven via a rotating shaft by a drive device (not shown). Transmission of driving force depends on whether it is done by belts or pulleys. The axis of rotation (2)) is journalled in a collar-shaped outward projection of the casing, designated by (50).

This type of separator is located upstream of the papermaking machine and is used in the process of processing the fibrous suspension at a later stage than the above-mentioned type of separator. , the component may only be discharged from the outlet fitting 128). However, in view of the role of the outlet pipe joint, such a name was given to the same part. In any case, since a relatively small amount of components is discharged from this part, at least the fibrous material containing many bubbles and the turbid liquid part are discharged from this part.

FIG. 4 shows a hydrocyclone with an inlet (36) pointing in the direction of tangential force, but thanks to the structure introducing the material in the direction of tangential force, a turbulent flow can be created in a known manner. .

The turbulent flow first flows downwards radially outside the casing 0υ and then reverses direction. Unpleasant impurities are
The light component discharged from the outlet t3'6, in this case the desired component, is sent to the desired component outlet.

In this case too, an annular chamber 01) provided coaxially with respect to the outlet (support) for the desired component is provided in an extension of the casing α5) for introducing the returned component from the inlet. .

This return component may, for example, at least partially contain the desired component discharged via outlet lA). This is because this component may in some cases contain relatively large amounts of lightweight impurities that should have been discharged from the lightweight component outlet.

As often mentioned, it has been found that lightweight impurities can be directly separated from the desired components even on or near the central axis of rotation (14). However, this effect is not so complete.

Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto.

[Brief explanation of drawings]

FIG. 1 is a simplified longitudinal sectional view of one preferred embodiment of a separation device based on the present invention If. FIG. 2 is an end view of the device of FIG. 1. FIG. 4 is a longitudinal sectional view of an embodiment of a vertical shifter set of a separating device according to the invention; FIG. 4 is a longitudinal sectional view of an embodiment of a separating device according to the invention configured as a hydrocyclone; FIG. 1) Casing (2) Rotor (3) Outlet chamber
(4) Rotating shaft (5) Shaft coupling (6
) (γ) (8) (9) Pipe joint filter plate (1
1) (1 sword (11) annular chamber 03) guide surface
α → Center axis (rotation) End wall (211 separation device □□□) Rotor Cough guide surface) Filter plate Minister) Blur. (Incorporated)) (2)) Rock) Side pipe joint ■) Rotating shaft C3]
) Casing 3) Entrance Gη 138) End and outlet Engraving of the drawing of the protrusion (no changes to the content) Fig, 1 Fig, 2 Procedural amendment C'jf Created in 1982, ＾ Month i$ Japan Patent Office Commissioner Kazuo Wakasugi 1, Display of the case 1982 Patent Application No. 179693 2, Name of the invention Fibrous suspension separator 3, Person making the amendment Relationship to the case Name of the patent applicant Jots, M., Voith GMB 5, Amendment order Date: February 2, 1982 (Delivery date: February 22, 1988) 6. Number of inventions increased by amendment None 7. Subject of amendment Description and drawings 8. Contents of amendment

Claims (1)

Claims: (1) having a separate outlet for relatively lightweight components;
A fibrous suspension separator in the paper industry, comprising: a generally rotationally symmetrical casing for realizing a rotating flow of the fibrous suspension; and a casing near the center of the rotating flow for post-cleaning. an end plate of the casing having a device for introducing a portion of the material therein; and an end plate of the casing which is coaxial with the central axis of the rotational drop and has a connection with a ninth outlet pipe of the light component; a mass chamber provided in the extension of the casing to the said joint of the outlet pipe for the first component and communicating with the inlet pipe for introducing the above-mentioned material; and wherein the bulk chamber includes an opening opened toward the inside of the casing, approximately in the center axis-force plane of the rotational flow. (2) The inlet pipe for supplying a part of the material protrudes radially inward toward the casing obliquely with respect to the central axis of the rotating flow, and the central axis is directed toward the casing. Claim (1) characterized in that the casing is connected to the extension of the casing at a distance approximately equal to the outer diameter of the annular chamber from the outlet end of the extension of the annular chamber.
The equipment described in section. (8) The diameter of claim (1) expands outward in the radial direction in a funnel-like manner from the mass chamber, and has a guide surface attached to the outlet pipe connection portion for @lid component. ) or (2). 4. Device according to claim 8, characterized in that the guide surface is provided adjacent to the outlet pipe connection for the transferred component. (5) Separate outlets for the light and coulometric components and an outlet tube joint barb for the light components cooperating with the end wall of the casing on the opposite side to provide an outlet chamber for the desired components. The device according to any one of claims (1) to (4), characterized in that it has a rotor that rotates in opposition to a generally planar filter plate that defines a filter plate. (6) Rotation. Claim 1, characterized in that it has a rotor that rotates coaxially with respect to the central axis of the rotating flow, facing a rotationally symmetrical filter plate that is coaxial with the central axis of the rotating flow. ) to (4). (7) The rotating flow applies a tangential force to the fibrous M suspension against a relatively long rotationally symmetrical casing such as a hydrocyclone. Claim No. (1) characterized in that the invention is formed only by introducing
The device according to any one of items 1 to 4.