JPS5846154Y2 - Rotor for pulp manufacturing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a disintegration rotor used in the production of pulp from papermaking raw materials, and its purpose is to further improve the disintegration efficiency of the rotor. explain.

Reference numeral 1 denotes a disk-shaped desk, on which a plurality of blade pieces 2 are radially protruded from the periphery at intervals of 4, and each blade piece 2 has a front edge 3 in the direction of rotation, and an outer end thereof in the direction of rotation. It is tilted with respect to the rotor radius so as to move backward relative to the rotor.

Although this type of rotor is already known in the art, the present invention provides a plurality of blade pieces 2, one with a thick wall 2a and the other with a thin wall 2b, which are arranged alternately in an average distribution in the circumferential direction. It was placed protrudingly.

That is, in the illustrated example, eight blade pieces are provided protrudingly, and the thick one 2a
and the thin ones 2b were arranged alternately every other time,
Nine blade pieces may be provided protrudingly, and one thick blade piece 2a may be arranged for every two thin blade pieces 2b, and the number of blade pieces 2 and the alternating arrangement relationship of the different blade pieces may be carefully set.

A wear-resistant ultra-hard material 5 such as a special alloy is removably attached to the leading edge 3 of each blade piece 2, including thick and thin ones, with screws 6 or the like.

Incidentally, the disk-shaped task 1 in the illustrated example has a boss 1 connected to the shaft 8.
It consists of two parts, a and a peripheral edge task 1b, which are joined together with bolts, and a bowl-shaped cap 1C is attached to the upper surface of the cap, so that the peripheral edge part as a whole becomes gradually thinner.

7 in the figure is a radial protrusion provided at the center of the lower surface of the rotor.
The material to be processed that enters the center is diffused outward by centrifugal force.

This product is installed close to the upper surface of the porous bed plate 9 at the bottom of the tank as shown by the chain line in Figure 4, and rotated in the direction of the arrow shown by A in Figure 1 to perform the rubbing and stirring disintegration effects. The end surface of the leading edge 8 is slightly inclined forward with respect to the surface of the plate 9 to make sliding and disassembly work more effective.

This type of rotor is more effective as the number of blades increases, but in this case, cavitation occurs in the raw material valve liquid in the tank on the upper surface of the rotor, which reduces the stirring dissociation effect.

However, according to the present invention, the plurality of radially protruding blade pieces are divided into two types: a thick one 1a and a thin one 2b.
The seeds are distributed evenly in the circumferential direction of the rotor and arranged alternately, so that the two blade pieces 2a and 2b have a sliding and disintegrating action, and the thick blade 2a allows the slurry raw material to be mixed by rotation at its front end surface. This makes it possible to effectively prevent the occurrence of cavitation due to the rotation of the rotor, and since the front end surface of each blade piece 2a, 2b is made of ultra-hard material 5, it is extremely robust and can significantly extend its service life. Furthermore, it has the advantage of being easy to manufacture, process, and assemble.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the rotor of the present invention, Fig. 2 is a side view, Fig. 3 is a back view, Fig. 4 is a side view taken along line A-A in Fig. 1, and Fig. 5 is a 1, and FIG. 6 is a sectional view taken along line C--C of FIG. 1. 1...Disc-shaped desk, 2a...Thick blade piece, 2b...Thin blade piece, 3...Front edge, 4... - Spacing, 5...Super hard material.

Claims (1)

[Scope of utility model registration request] A plurality of blade pieces 2 are provided radially projecting from the periphery of the disc-shaped desk 1 at intervals of 4, and the front edge 3 of each blade piece 2 in the direction of rotation is set such that the outer end thereof is retracted in the direction of rotation. In the case where the blades 2 are inclined with respect to the radius of the rotor, thick blades 2a and thin blades 2b are provided, and these are arranged and protruded alternately in an average distribution in the circumferential direction of the rotor. A rotor for a pulp manufacturing device in which a wear-resistant ultra-hard material 5 is removably attached to the front edge 3 of the piece 2.