SU956670A2 - Hydraulic breaker - Google Patents

Description

The invention relates to fiber raw materials and can be used in the pulp and paper, construction and other industries that dissolve fibrous materials.

According to the main auth. No. 604885 is known a pulper containing a tank and a rotor arranged therein, made in the form of a solid disc with blades and through holes, and a stator mounted to adjust the gap between them and provided with a defibrating headset located along the blades along their entire length, and the front edges of the blades are angled toward the direction of rotation of the rotor. During the operation of the pulper, the blades provide a preliminary dissolution of the material, which then through the holes in the disc enters the gap between the rotor and the sieve, where the final dissolution takes place. The finished mass is removed through sieve 1.

However, the screen is clogged due to the fact that no means is provided for cleaning it.

The purpose of the invention is to increase the productivity of the pulper.

The goal is achieved by the fact that in the pulper, the rotor disk has additional slotted through holes located on the opposite side of each blade relative to the through holes, and bevels made on

10 of the disk surface, facing the stator, between the through and additional slotted openings, moreover, the vertices of the skosa are located at the through openings.

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Figure 1 Schematically shows the pulper, General view, section; Fig. 2 shows a rotor with replaceable segments of a knife set and a stator made in the form of a perforated plate; on fig.Z - rotor, top view without cutouts; Fig. 4 shows the same, with cutouts between the blades; figure 5 - section aa on fig.Z; figure 6 - section bb in figure 4.

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The pulper consists of a bath 1 with fixed guide vanes 2, a receiving chamber 3 with a nozzle 4 for removal of mass.

Inside the bath is a rotor 5,

30 made in the form of a solid disk

with blades 6, the front faces of which are inclined in the direction of rotation of the rotor (Figures 5 and 6) and provided with main through holes 7. Under the rotor, the {{ stator 8 (sieve).

The rotor is additionally provided with slotted holes located in the opposite side of the blade, On the disk surface facing the sieve, between the main holes 7 and additional, 9 is made bevel, 10 of which is at the top of hole 7.

Cuts 10 can be made on the disk between the blades 6 (Figure 4).

The rotor is driven to rotate through a V-belt or gear 11 from the electric motor 12.

In the event that the diverter is provided with replaceable segments of 13 s; defibrating headset, the jn bevel is performed on the headset (Fig.6).

 The pulper works as follows. ,

The material to be dissolved is loaded into the bath 1, which is saturated with water.

When the rotor 5 rotates, its blades 6 interact with the material being dispersed and the water and impart acceleration to them. The result is a bath. 1, intensive circulation occurs due to which the fibrous material enters the rotor 5. The dissolution of the fibrous materials is accomplished by mechanical breaking of the bonds between the fibers. The last 35 are ruptured both by the action of the rotating rotor 5 and the stationary lopfsty 2, and by the hydrostatic effect of the high-speed flows of the water-fiber suspension that originates in the pulper bath.

The final dissolution of the material takes place in the gap between the rotor 5 and the stator 8, where unblown material particles enter through the holes 7 under the influence of the blades 6, along with the mass flow. - .v; fl .. za-erre ..;. The material is subjected to additional mechanical stress. However, as the mass passes through the holes of the rotor, fibers are deposited on it, which are: POS: Heat (by definition, they form a layer that more and more prevents the penetration of other fibers through the sieve holes.

for example, the physical properties of the fiber, concentration, head, under the influence of which the mass passes through a sieve. To destroy this layer, bevels and additional holes 9 are provided on the disk. Blades 6, a passage near the surface of the sieve, due to the presence of these elements, create alternately or discharge or pressure and thus prevent the sieve from clogging. The pulsating jerks arising in the gap between the rotor and the sieve, directed alternately to the sieve, then from it, absorb each other and do not spread beyond the sieve.

The cleaning efficiency of the screens depends on the inclination of the blades, the square of the magnitude of the speed of the blades and the frequency of the blades, which is determined by their number and the speed of rotation of the rotor.

As the dissolution is ready, the mass passes through the openings of the sieve 8 into the receiving chamber 3, from which it is pumped out of the pulper through the nozzle,

Cut 1.0 between loops 6 is provided to increase the performance of the pulper.

The pulper provides material dissolution due to enhanced mechanical action, which leads to more intense separation of the material into individual fibers, and, consequently, to increased productivity and energy savings.

Claims (1)

1. USSR author's certificate 604885, cl. D 21 B 1/08, 1976, JA VJ Phage.1 Ar Fchg.5 B6 6