SU1567706A1 - Tisc mill - Google Patents

Abstract

The invention relates to a device for grinding a fibrous cellulosic material and can be used in the pulp and paper industry. The purpose of the invention is to improve the quality of fiber material development while ensuring operational reliability and reducing energy consumption by controlling the cyclical change in the size of the gap between the grinding discs. The disc mill consists of a drive, a housing 2 with a fitting 3 for introducing fibrous cellulose-containing material and a fitting 4 for bringing out the developed material, inside which are installed a rotor 5 mounted on shaft 6, and a stator 7 disks with knife headsets 8 and 9 mounted on supporting bases x 10 and 11 and forming the working gap 12, and between the knife headset 9 of the stator disk 7 and its carrier base 11 is formed a hydrochamber 13, bounded by annular sleeves 14 and 15 of elastic material, and means for cyclic change the size of the gap between the disks, made in the form of a spool distributor, having connections for connecting to the oil station and pipes for connecting to the hydraulic chamber 13 through a window 21 made in the supporting base 11 of the stator disk 7. The oil station includes an oil pump and a control valve, and the spool valve consists of spool mounted on the drive shaft in the housing with connections for connecting distribution pipelines. On the supporting base 11 of the stator disk 7, limiters 28 are mounted to control the amplitude of oscillation of the knife headset 9 of the stator disk 7. 4 Il.

Description

The invention relates to a device for grinding fibrous cellulose-containing material and can be used in the pulp and paper industry.

The purpose of the invention is to increase the fiber quality of the material while maintaining reliability and reducing waste by adjusting the cyclical variation of the size of the gap between the grinding discs.

Fig. 1 is a schematic diagram of a disk mill; figure 2 - grind site, longitudinal incision; fig.Z - spool valve, longitudinal section; figure 4 - section aa on fig.Z.

The disc mill consists of a drive 1, a housing 2 with a fitting 3 for introducing fibrous cellulose-containing material and a fitting 4 for withdrawing a developed material, inside which a rotor 5 mounted on the shaft 6 is mounted, and a stator 7 drives with a knife headset 8 and 9, mounted on bearing bases 10 and 11 and forming a working gap

12, with a hydrochamber formed between the knife headset 9 of the stator disk 7 and its bearing base 11

13, bounded by annular sleeves 14 and 15 of elastic material, and means for cyclically changing the size of the gap between the discs, made in the form of a spool pin

five

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a divider 16 having connections 17, 18 for connecting to the oil station and nozzles 19 and 20 for connecting to the hydro chamber 13 via a window 21 provided in the supporting base 11 of the stator disk 7. The oil station includes an oil pump 22 and a control valve 23, and the spool valve 16 consists of A spool 24 mounted on a drive shaft 25 in the housing 26 with nozzles 17-20 for connecting distribution pipes. Maglostanz designated poz.27. On the carrier base of the 11-stator liska 7, limiters 28 are mounted to regulate the amplitude of oscillations of the knife headset 9 of the stator disk 7.

The mill works as follows.

The original fibrous cellulose-containing material in the form of an aqueous suspension is fed through fitting 3 into the working gap 12 between the knife headsets 8 and 9, respectively, a rotating rotary disk 5 and a stator disk 7, where it is developed by the intense mechanical action of the knife edges of the headsets 8 and 9 when cyclically changing the size of the working gap 12 with adjustable frequency due to the reciprocating movement of the knife headset 9 of the stator disk 7.

The reciprocating mixing of the knife set 9 of the disk 7 is ensured by the pulsation of the pressure of the working fluid in the hydrochamber 13 created by the slide valve 16 driven by an electric motor. Rotating, the spool 24 opens alternately the nozzles 17–20 for supplying fluid to the hydraulic chamber or for discharge. The required frequency of oscillation of the working gap 12 between the headsets 8 and 9 is provided by setting the number of revolutions of the spool 24. To create the required pressure in the hydrochamber 13 and to discharge the working fluid from the oil system with a brief shut-off of the discharge system 24, the control valve 23 serves.

 The disc mill is offered by controlling the frequency and amplitude of the cyclic change in the size of the gap between the discs to improve the quality of material development with less energy. Constructive execution of the means for changing the size of the working gap increases the reliability of the mill at work.

Claims (1)

Invention Formula A disc mill consisting of an actuator and a housing with fittings for introducing fibrous cellulose-containing material and withdrawal of the developed material, inside of which are mounted a rotary and stator disks fixed to the shaft with a knife headset mounted on a carrier changes in the size of the gap between the discs, characterized in that, in order to improve the quality development, while ensuring reliability and reducing energy consumption, a hydrocamera is formed between the knife headset of the stationary disk and its carrier base, limited by ring sleeves of elastic material, and the means for cyclically changing the size of the gap between the discs is made in the form of a spool valve having nozzles for connection with an oil station and nozzles for connection with a hydraulic chamber through a window made in the supporting base of the stator disk. one 20 Editor N.Gorvat FIG. 18 Compiled by E.Rchgityev Thred L. Olnykyk Proofreader N. Korol 25