JPS6290207A - Fiber disperser - 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 a fiber dispersion machine that finely divides and supplies fibers used for reinforcing concrete, mortar, etc.

[Prior art] i! requires high strength. In order to give the materials such as concrete and mortar used in structures the necessary strength, polymer fibers,! A method of cutting l fibers, natural fibers, etc. into short lengths and mixing them into materials such as concrete has been widely used. When mixing Il#fi, disperse it uniformly,
Kneading and mixing is an important point. In particular, in concrete mixed with tJA48 fibers, the properties of the concrete after hardening are easily affected by the dispersion and orientation of the steel fibers, so high uniformity is required in the mixing of the steel fibers.

When such fibers are mixed into concrete, mortar, etc. without being sufficiently dispersed, they tend to cross and overlap each other to form aggregates. Therefore, it has been dispersed using a drum type with several blades in the cylindrical wall or a centrifugal type disperser with a number of dispersing blades attached to the outer periphery of a rotating disk, and then mixed into concrete or the like.

[Problems to be Solved by the Invention] In the conventional drum-type dispersing machine, some of the fibers sent to the hopper in the form of small lumps may be sent to the mixer without being subdivided. In the case of centrifugal dispersion, loosening was generally insufficient, and when the fibers were flooded onto concrete, etc., the clumps of fibers were not broken down and it was difficult to disperse them uniformly.

Therefore, an object of the present invention is to solve the above problems and provide a t1M disperser that can finely divide and supply fibers.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cylindrical part at the lower part of a hopper having a function of temporarily storing reinforcing fibers, and a rotor base having a drop opening in the cylindrical part. The upper rotor chamber is divided into an upper rotor chamber and a lower rotor chamber, and the upper rotor chamber is equipped with several rotor blades and a cut-out rotor with an oyster rod protruding above it, and the lower rotor chamber is a conical rotor chamber. A dispersion rotor having a large number of dispersion blades is installed around the outer periphery of the body, and a motor for rotating the cutting rotor and the dispersion rotor is provided below the cylindrical portion.

[Operation: The fibers cut into appropriate lengths are aggregated and sent into a hopper. The lumpy fibers are attached to an oyster rod that protrudes above the rotor, and as the rotor rotates, they are subjected to centrifugal force and are split into several pieces that separate from the oyster rod and fall onto the rotor base. The fibers that have fallen onto the rotor base are cut into pieces by the rotor blades and sequentially sent out from the drop port to the lower rotor chamber while rotating.

The fibers sent out from the drop port collide with the inclined surface of the cone of the rotating dispersion rotor, and are scattered in various directions while repeating collisions between the inner wall of the hopper and the inclined surface, and the lumpy fibers are gradually broken up and dispersed. I will do it. The thus finely divided fibers can be finely divided by the dispersion blades of the dispersion rotor and sent to the next process.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

Fibers used as reinforcing materials for mortar, cement, concrete, etc. are cut into appropriate lengths and fed into a hopper 1 having a storage function.

As shown in Fig. 1, the hopper 1 has a trumpet-shaped intake section 2.
It consists of a cylindrical part 3 installed at the bottom thereof, and a base 4, and the cylindrical part 3 is formed with an outlet 5 for sending out the finely divided fibers, and a chute 6 is connected to this outlet 5. ing. Further, a motor 7 is installed within the base 4.

Two rotor chambers 8.9 are installed in the cylindrical portion 3, one above the other. The rotor chamber 8.9 is separated by a rotor base 16 with a drop opening 17.

The upper rotor chamber 8 is equipped with a cutting rotor 10 that greatly loosens the cut fibers, and the lower rotor chamber 9 is equipped with a dispersion rotor 13 that loosens the cut fibers even more finely.

As shown in FIG. 2, the cutting rotor 10 has four rotating blades vA11, and the upper surface of the rotor blades 11 is gently inclined, and several oyster rods 12 are formed on each surface.

As shown in FIG. 3, the dispersion rotor 13 that finely loosens the u1 debris is composed of a conical or truncated cone body 14 and dispersion blades 15 installed around its outer periphery.

The rotation of the motor 7 is transmitted to the cutting rotor 10 and the dispersing rotor 13 through a central shaft 18, and the cutting rotor 10 and the dispersing rotor 13 rotate in the same direction and at the same speed due to the drive of the motor 7.

The shaft 18 is tightened on the cutting rotor 10 by a nut 19.

The tIN cut into appropriate lengths is aggregated and fed into the hopper 1 from the trumpet-shaped intake section 2 in the form of small lumps.

In the upper rotor chamber 8 installed at the bottom of the hopper 1, the small fibers are placed on the oyster rod 12 installed at the upper end of the cutting rotor 10, and the rotor blades 11 are rotated by the motor 7 and subjected to centrifugal force. The fibers are dispersed and fall off the oyster rod 12 and onto the rotor base 16. The fibers that have reached the rotor base 16 are cut into pieces by the rotary blades 11 and are
- The rotor rotates on the rotor base 16 and is delivered from the drop port 11 to the lower rotor chamber 9.

The fibers transferred to the lower rotor chamber 9 collide with the inclined surface of the conical body 14 of the rotating dispersion rotor 13 and are blown away, and proceed in a zigzag pattern while repeatedly colliding between the inner wall of the cylindrical portion 3 and the inclined surface. To go.

During this time, the fibers that were in the form of small lumps gradually become finely dispersed and become single fibers. The fibers thus finely dispersed are cut into fine pieces by the dispersing blades 15 of the dispersing rotor 13, and are rotated within the cylindrical portion 3 as the dispersing rotor 13 rotates.
It is sent out from the discharge port 5 to the chute 6 and transferred to the next process.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to these embodiments. For example, in the embodiment, the rotor blades 11 of the cut-out rotor 10 are constituted by four blades having a gently sloped upper surface, but the rotor blades may have a rectangular longitudinal section or the like, and the number of blades may be increased. Similarly, the oysters 12 and the cone 14 of the dispersion rotor 13
The shape, number, etc. of the dispersing blades 16 are also not limited to this embodiment.

Moreover, although the rotational direction and rotational speed of the cut-out rotor 10 and the dispersion rotor 13 were set to be the same direction and the same speed in the embodiment, they may be rotated in opposite directions and the rotational speeds may also be different.

[Effects of the Invention] As explained above, the fiber dispersion of the present invention (fibers are roughly loosened by the cut-out rotor in the upper rotor chamber, and then the fibers are dispersed between the inclined surface of the dispersion rotor in the lower rotor chamber and the inner wall of the hopper. The particles are collided and dispersed finely, and further divided into smaller pieces by a dispersion blade, and then supplied.In order to disperse naturally by repeating collisions in this way, it is similar to when a lump of U and navy blue is forcibly separated by a machine. Fibers can be subdivided without bending, breaking, or the like.

Segmented! L fibers can be mixed uniformly into concrete and the like, preventing troubles such as clogging of the mixer discharge section and stoppage due to overload, and making it possible to provide materials such as concrete with the necessary strength.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, FIG. 2 is a plan view of a cut-out rotor, and FIG. 3 is a plan view of a dispersion rotor. 1... Hopper, 2... Intake part, 3... Cylindrical part,
4... Base, 5... Outlet, 6... Chute, 7
...Motor, 8...Upper rotor chamber, 9...Lower rotor chamber, 10...Cut out rotor, 11...
Rotary blade, 12... Oyster stick, 13... Dispersion rotor,
14... Cone, 15... Dispersion vane, 16... Rotor base, 17... Drop opening, 18... Shaft, 19... Nut.

Claims (1)

[Claims] A cylindrical part is provided at the bottom of the hopper which has a temporary storage function for reinforcing fibers, and a rotor base having a drop port is interposed in the cylindrical part to form an upper rotor chamber and a lower rotor chamber. A cut-out rotor with several rotary blades and an oyster rod protruding above it is installed, and a dispersion rotor having a large number of dispersion blades around the outer circumference of a conical body is installed in the lower rotor chamber, A fiber dispersing machine characterized by being equipped with a motor that rotates a cutting rotor and a dispersing rotor.