JPH076149B2 - Stock liquid jet separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a papermaking raw material mixed liquid (papermaking liquid) capable of continuously separating papermaking raw material and white water with extremely high efficiency. The present invention relates to a jet separation device.

[Conventional technology and its problems]

Conventionally, in the recycling of waste paper, there are various devices that separate the waste paper from the liquefied papermaking raw material mixed liquid (paper solution, about 99% of which is white water) into the raw material for papermaking and white water. is doing. Most of them are made by passing the stock solution through a filter having fine meshes so that the papermaking raw material remains on the filter, and only the papermaking raw material component (actually, about 95% of the papermaking raw material component is White water) is extracted, but in reality, the processing time is long and there are inconveniences such as the inability to process a large amount of stock solution.

Further, there is a drawback that the processing state is changed according to the ratio of the papermaking raw material and the separation step cannot be performed under the pressure in the optimum state.

[Means for Solving the Problems]

Therefore, as a result of earnest and repeated studies to solve the above-mentioned problems, the inventor has found that the invention uses a sorting drum consisting of a cylindrical filter portion having a large number of slit-shaped passage holes and a side disc in a casing as a prime mover. Is provided so that the longitudinal direction of the slit-shaped passage hole and the axial center direction of the selection drum coincide with each other, and a nozzle portion is provided at an upper position of the delivery pipe and along the longitudinal direction. From the open side of the sorting drum, a stock liquid delivery body in which the jetting direction is made substantially orthogonal to the longitudinal direction of the slit-shaped passage hole of the sorting drum, and the nozzle interval of the nozzle portion can be adjusted by the adjusting portion, Insert
It is arranged in a position above the inside of the sorting drum and in such a manner that the jetting directions of both nozzles are substantially horizontal in opposite directions to each other at the top of the inner surface of the sorting drum. And a papermaking material jetting / separating device provided separately from the papermaking material discharge port communicating with the open side of the sorting drum, the papermaking material mixed liquid (papermaking solution) separates the papermaking material and white water. It is possible to continuously and extremely efficiently separate the above-mentioned problems.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 17.

A reference numeral A denotes a sorting drum. Collar-shaped circumferential guide portions 2, 2 are fixed to both ends of the cylindrical cylindrical filter portion 1 having a large number of fine slit-shaped passage holes 1a in the longitudinal direction. There is. The circumferential guide portion 2 has an annular shape, and an end edge of the cylindrical filter portion 1 is inserted and fixed to an inserted stepped portion having a diameter substantially equal to that of the cylindrical filter portion 1 (see FIGS. 6 and 7). The cross-section of the circumferential guide portion 2 has a concave shape, and is a partition wall provided inside the outer casing C that accommodates the drum.
It is configured to rotate in 11 circular holes. A disc-shaped side disc 3 is fixed to one end of the cylindrical filter portion 1. Specifically, the side circular plate 3 is fixed to the circumferential guide portion 2 by a fixing tool such as a screw (see FIGS. 2 to 4 and 7). An output shaft of a prime mover M such as a motor is directly connected to a connecting portion 3a (see FIGS. 2 and 8) fixed to an outer center position of the side disk 3 so as to be drivable.

Particularly, as shown in FIGS. 2 and 4, the longitudinal direction of the slit-shaped passage hole 1a and the axial direction of the selection drum A are configured to coincide with each other.

Reference numeral B denotes a horizontally long stock liquid delivery body, which is provided above the inside of the sorting drum A. Specifically, the sorting drum A
The axial direction is substantially the same as that of the sorting drum A, and it is provided horizontally above the sorting drum A. One end of the sorting drum A can be connected to the inner side of the side disc 3 and the other end can be coupled to the outside of the sorting drum A. Has been done.

The stock liquid delivery body B includes a delivery tube 4, a nozzle portion 5, and an adjusting portion 6. Nozzle portions 5, 5 are provided at the upper position of the delivery pipe 4 and on both sides along the longitudinal direction. Specifically, both of the cross sections of the delivery pipe 4 (see FIG. 10, FIG.
(See FIG. 11) Nozzle portions 5, 5 are formed. An elongated hole 4a is formed along the longitudinal direction at a position above the delivery pipe 4 at the location where the two nozzle portions 5, 5 are formed. The nozzle portion 5 of the delivery pipe 4 is installed inside the cylindrical filter portion 1 of the sorting drum A, and the other end of the delivery pipe 4 is located outside the outer casing C and outside the outer casing C. Therefore, the stock solution is fed into the inlet portion of the delivery pipe 4. Further, one end of the delivery pipe 4 (on the right side in FIG. 3) is
It is closed at the blind plate. The nozzle portion 5 is formed along the longitudinal direction of the delivery pipe 4 and is composed of a movable plate 5a and a fixed plate 5b. The movable plate 5a has a strip plate shape, and the delivery pipe 4
The hinge 5d is provided on the outer side surface of the hinge via a waterproof material 5c such as a rubber plate, and is rotatable around the hinge 5d.

As shown in FIGS. 9 and 10, 5e and 5e are partition end plates, which are watertightly fixed to both ends of the fixed plate 5b between the end of the fixed plate 5b and the delivery pipe 4. The end of the movable plate 5a is wrapped so that the movable plate 5a is substantially watertight even if the movable plate 5a is moved. Further, as shown in FIG. 11, the fixing plate 5b is formed of a single flat plate having an arch-shaped cross section.

Reference numeral 6 denotes an angle adjusting portion of the movable plate 5a, which is composed of a movable piece 6a and a fixed piece 6b as shown in FIGS. 9 to 14. The fixed piece 6b is the delivery pipe 4, and the movable piece 6a is the movable plate.
It is fixed to each 5a. Specifically, the fixed piece
6b is formed of a vertical strip plate and a horizontal protrusion provided at a central portion in the longitudinal direction of the strip plate (see FIG. 12). The vertical strip plate of the fixed piece 6b is fixed along the longitudinal direction of the delivery pipe 4 while keeping it substantially parallel, and the horizontal projection piece is fixed in the middle thereof. A screw hole is formed in the projecting piece, and the adjusting screw 6c is screwed into the screw hole. The movable piece 6a is also formed by a vertical strip plate piece and a horizontal projection piece, and the upper end of the strip piece is fixed to the tip position of the movable plate 5a by welding or the like. The tip end of the adjusting screw 6c is loosely inserted into the hole formed in the movable piece 6a, and is rotatably provided so as not to move in the vertical direction. As a result, by rotating the adjusting screw 6c, the movable plate 5a is moved up and down together with the movable piece 6a.

The nozzle parts 5, 5 are provided on both sides of the cross section of the delivery pipe 4,
The jetting direction from each of the nozzle portions 5, 5 is configured to be substantially orthogonal to the longitudinal direction of the slit-shaped passage hole 1a of the sorting drum A, and is substantially horizontal to the inner surface top portion of the sorting drum A. It is arranged.

Reference numeral 7 is a sprinkling pipe, which is inside the outer casing C and is also a sorting drum A.
Is disposed above the water spray nozzles, and the water spray nozzles 7a, 7a, ... Are provided at predetermined intervals in the longitudinal direction of the water spray nozzles.
The water ejected from a, ... Abuts the cylindrical filter portion 1 surface of the sorting drum A.

Regarding the structure of the outer casing C, as shown in FIGS. 1 and 2, a white water reservoir 9 is provided below the drum chamber 8, and a liquid discharge port 9a is provided at the bottom of the white water reservoir 9. Has been. A papermaking material discharge port 10 is provided on the open side of the sorting drum A. A partition wall 11 is formed between the papermaking material discharge port 10 and the white water storage chamber 9 so that the materials and the like are not mixed.

The papermaking raw material discharge port 10 has an opening formed on the upper side for confirming the discharge status of the papermaking raw material, and is formed so as to cover the periphery thereof. Immediately below, there is obliquely provided a wire mesh 10a that descends as it moves away from immediately below (see FIGS. 16 and 17). Further, a pressing plate 10b is hung so as to press the surface of the wire mesh 10a and is rotatably supported in a free state (see FIG. 2).

The water-containing papermaking raw material flowing down from the open side of the sorting drum A is further separated into white water on the wire netting 10a, and the papermaking raw material is sent from below to a stock refinement step (not shown). The white water at this time is configured to enter the white water storage chamber 9.

A circular guide hole 11a is formed in the partition wall 11 and is loosely inserted in the guide groove of the circumferential guide portion 2 of the sorting drum A as described above. Further, the outer casing C is
It is composed of an outer casing body C ₁ and a lid C _2, and the partition wall 11 is also divided.

〔The invention's effect〕

First, in the invention of claim 1, a sorting drum A including a cylindrical filter portion 1 having a large number of slit-shaped passage holes 1a, 1a, ... And a side disc 3 in an outer casing C can be driven by a prime mover M. Nozzles 5, 5 are provided at the upper position of the delivery pipe 4 and on both sides along the longitudinal direction by making the longitudinal direction of the slit-shaped passage hole 1a coincide with the axial direction of the selection drum A.
The ejection directions from the both nozzle parts 5, 5 are made substantially orthogonal to the longitudinal direction of the slit-shaped passage hole 1a of the selection drum A,
A stock liquid delivery body B whose nozzle interval of the nozzle portion 5 can be adjusted by an adjusting portion is inserted from the open side of the sorting drum A, and is located above the inside of the sorting drum A and at the both nozzle portions. The jetting directions of 5 and 5 are arranged so as to be substantially horizontal in opposite directions to each other at the top portion of the inner surface of the sorting drum A, and the white water reservoir 9 and the opening of the sorting drum A are located below the sorting drum A. By using the stock solution jetting / separating device provided separately from the papermaking material discharge port 10 communicating with the side, firstly, in the papermaking material mixed liquid (stock solution), the papermaking material and the white water are continuously and extremely Separation can be performed with high efficiency, secondly, the separation operation can be performed in a state where there is almost no clogging, and thirdly, the configuration is simple and can be provided at low cost.

To explain these effects in detail, first, both nozzle parts 5,
A stock liquid delivery body B whose ejection direction from 5 is substantially orthogonal to the longitudinal direction of the slit-shaped passage hole 1a of the sorting drum A.
Is inserted from the open side of the sorting drum A, and is substantially horizontal in a position above the inside of the sorting drum A, and the ejection directions of the nozzle parts 5, 5 are opposite to each other at the top of the inner surface of the sorting drum A. Since it is arranged so that
When the stock liquid from inside is jetted from the inside of the cylindrical filter part 1 of the sorting drum A to the slit-shaped passage holes 1a, 1a, ..., As shown in FIG. 14, it collides with the slit-shaped passage holes 1a. At this time, because of the small holes, the papermaking raw material (about 95% contains white water) does not pass through and reaches the inside of the cylindrical filter part 1 and moves as it is with the rotation of the sorting drum A,
Further, from the slit-shaped passage hole 1a, only white water is discharged to the outside of the sorting drum A in the form of mist, which becomes a continuous state, and the papermaking raw material and white water can be separated with extremely high efficiency. .

In particular, the longitudinal direction of the slit-shaped passage hole 1a and the axial direction of the selection drum A are made to coincide with each other, and the ejection directions from both nozzle portions 5, 5 are substantially orthogonal to the longitudinal direction of the slit-shaped passage hole 1a of the selection drum A. By doing so, when the sorting drum A rotates, in the slit area of the slit-shaped passage hole 1a, the slit area in the rotation direction of the unit time becomes smaller, and only the white water passes as a mist. The papermaking raw material (about 95% contains white water)
Almost no passage and good separation is possible.

Furthermore, the stock liquid delivery body B is located substantially above the inside of the sorting drum A, and the ejection directions of the nozzles 5 and 5 are substantially horizontal in opposite directions at the top of the inner surface of the sorting drum A. Since it is arranged, the ejection direction is close to the tangential direction at the inner surface apex portion of the sorting drum A, and it can be made even smaller than the slit area in the rotation direction of a unit time, which is further improved by the cooperation with the slit direction. Can be separated.

With such a configuration, a stock liquid jetting / separating device having a configuration in which the original white water discharged in the form of mist on the outer periphery of the sorting drum A is separated from the inner white water as a papermaking raw material and can be easily collected Can be provided.

Further, in the invention of claim 1, in particular, the slit-shaped passage hole 1a is constantly rotated by the rotation of the sorting drum A, and the stock solution is constantly sprayed to the new slit-shaped passage hole 1a. Since it is not always for one slit, it is extremely unlikely to be clogged, and the slit-shaped passage hole 1a, unlike a wire mesh, is elongated, but has a large unit area and is less likely to be clogged. There is.

As a result, with the conventional wire mesh construction, it is necessary to perform clogging treatment several times in a waste paper processing plant that operates continuously for one day, but in the invention of claim 1, it is possible to carry out clogging treatment at most once a day. In particular, clogging can be avoided, which has the effect of facilitating maintenance.

Further, since the nozzle interval of the nozzle portion 5 of the stock liquid delivery body B can be adjusted by the adjusting portion 6, first, the mouth width of the nozzle can be appropriately changed by the adjusting portion 6, so that There is an advantage that the size of the papermaking raw material can be easily maintained, or the nozzle diameter in the optimum state can be easily adjusted according to the viscosity of the stock solution.

Also, if the delivery pressure of the stock solution is high,
Since the ejection amount is large, it is particularly necessary to reduce the nozzle diameter. However, even in such a case, adjustment by the adjusting unit 6 can be easily dealt with.

[Brief description of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view of a cross section of an essential part of the present invention, FIG. 2 is a vertical side view of FIG. 1, and FIG. 4 is an enlarged cross-sectional view of a portion of the present invention, FIG. 5 is an enlarged view of a slit-shaped passage hole, and FIGS. 6 to 8 are enlarged views of a connecting portion of a sorting drum. Sectional view, FIG. 9 is a side view with a partial cross section of the stock solution delivery body, FIG. 10 is a perspective view with a part of the stock solution delivery body cut away, and FIG. 11 is the stock solution delivery of FIG. A sectional view of the body, FIG. 12 is a perspective view of the nozzle portion, FIG. 13 is an enlarged sectional view of the nozzle portion, FIG. 14 is a sectional view showing the working state of the present invention, and FIG. FIG. 16 is a perspective view of the apparatus, FIG. 16 is a partial perspective view of the papermaking raw material discharge port, and FIG. 17 is a cross-sectional view of the papermaking raw material discharge port. A ... sorting drum, B ... stock liquid delivery body, C ... outer casing, 1 ... cylindrical filter part, M ... prime mover, 1a ... slit-shaped through hole, 3 ... side disk, 4 ... ... Delivery pipe, 5 ... Nozzle part, 6 ... Adjusting part, 9 ... White water reservoir, 10 ... Papermaking material discharge port.

Claims (1)

[Claims] 1. A sorting drum comprising a cylindrical filter portion having a large number of slit-shaped passage holes and a side disk is provided in the outer casing so as to be driven by a motor, and the longitudinal direction of the slit-shaped passage holes and the shaft of the sorting drum. Nozzle portions are provided at the upper position of the delivery pipe and on both sides along the longitudinal direction so that the ejection direction from both nozzle portions is substantially the same as the longitudinal direction of the slit-shaped passage hole of the sorting drum. Insert a stock liquid delivery body that is orthogonal to each other and has a nozzle interval of the nozzle portion that can be adjusted by an adjusting portion from the open side of the sorting drum, and is located above the sorting drum and at the both nozzles. Are arranged so that the jetting directions of the parts are substantially horizontal in opposite directions at the top of the inner surface of the sorting drum, and at the lower position of the sorting drum, a white water reservoir and a papermaking raw material communicating with the open side of the sorting drum. The outlet Stock solution spraying separation apparatus characterized in that provided.