SU1236035A1 - Vibration-type thickener - Google Patents

Description

The invention relates to a device for thickening fiber suspensions and can be used in the pulp and paper industry.

The purpose of the invention is to increase the performance of the thickener due to the message of the filtering capacity of the screw oscillations and reliability in operation.

FIG. 1 shows a vibratory thickener, a longitudinal section; in fig. 2 - section A-A in FIG. in fig. 3 is a view B in FIG. 2,

Vibrating thickener includes a housing 1 with connections for supplying the initial suspension 2 and withdrawing the condensed product 3 and filtrate 4, the filtering tank 5 placed in the housing 1 and the vibrator 5 interacting with it, made in the form of several unbalanced shafts 7 placed on the yoke 8 so that the centers the rotations of the shafts 7 are located on the same straight line. Traverse 8 is mounted on the housing with shock absorbers 9

to os- 30

The base of the crosspiece 8 is connected to a filter 25 6 and a filter tank 5 through a tank 5 by means of an elastic system made of spring-type elements 10 equidistant from the axis — symmetry of the housing 1 and fixed at an angle of 30–60 °. traverse 8.

Vibrating thickener works as follows.

The original fibrous suspension through the pipe 2 under pressure is fed into the cavity between the housing 1 and the filter tank 5. Under the action of a pressure differential, which takes place outside and inside the filter tank

3S

This type of elastic system of spring-type elements 10 allows, at small amplitudes of oscillation of the traverse 8, to bring the filtering capacity 5 into an oscillating motion with higher parameters, which causes an additional increase in the thickener productivity due to the effective removal of sediment from the surface of the filtering capacity 5.

The use of unbalanced shafts as a source of vibration, working on the phenomenon of self-synchronization, maintains the reliability of the thickener in operation.

5,. The filtrate through the perforations of the perforation-Q since there is no need for the intake passes into the interior of the filtering volume of any kinematic bone 5, from where it is withdrawn through the patches of communication between the shafts.

logging 4, Suspen-.zh, dnng-ansg. NIICH along a spiral path, thickens and the condensed product is withdrawn from the thickener through the pipe 3. Necessary

The pressure drop relative to the walls of the filter tank 5 can be supported by the corresponding shut-off and control valves (not shown). During operation, the thickener, unbalanced shafts 7, mounted on the cross beam 8, cause the filter tank 5 to oscillate in a screw motion. At the same time, due to centrifugal forces acting on the filtrate located in the perforation holes, pressure pulsations are created near the surface of the filtering tank 5, which facilitate the effective removal of sediment from the surface of the filtering container 5 and, accordingly, intensify the thickening process.

The two-mass diagram of the thickener the connection between the crosshead 8 and the vibrator shafts 7 located on it

6 and a filtering capacity of 5 through

This type of elastic system of spring-type elements 10 allows, at small amplitudes of oscillation of the traverse 8, to bring the filtering capacity 5 into an oscillating motion with higher parameters, which causes an additional increase in the thickener productivity due to the effective removal of sediment from the surface of the filtering capacity 5.

The use of unbalanced shafts as a source of vibration, working on the phenomenon of self-synchronization, maintains the reliability of the thickener in operation.

FIG. 2 MS

Compiled by E. Vasiliev Editor N. Dankulich Tehred I.Psh1OVICH PPf IfL lIr.-ZakGz069 / 29 Circulation 355Subscribed

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, -Raushska nab., D.

Production

printing enterprise, Uzhgorod, st. Project, 4

figs

Claims (1)

VIBRATION THICKENER, which includes a housing with nozzles for supplying the initial suspension and removal of the condensed product and filtrate, a filtering container placed in the housing and a vibrator interacting with it, characterized in that, in order to increase productivity by communicating the filtering capacity of the screw oscillations and the reliability of the thickener, it has a traverse mounted on the housing with the help of shock absorbers, the base of which is connected to the filtering capacity by means of an elastic system made of spring type elements, noudalennyh from the axis of symmetry of the housing and attached at an acute angle to the base crosspiece, and the vibrator is configured in the form of several unbalanced shafts mounted on the crosspiece so that their centers of rotation are located on one straight line.