SU1218929A3 - Pressure box of paper-making machine - Google Patents

Abstract

In a paper machine, a headbox with at least two paper stock flow passages, comprising turbulence generators. The distribution header of the headbox is of segmental design, consisting of two or more pulp suspension supplying segments (21, 22; 121, 122, 123; 131, 132). The supplying segments communicate each with its own turbulence generator (40a; 40b; 41, 42, 43; 141, 142, 143, 144). The turbulence generators consist of a plurality of parallel flow passes (S1; S2; S3) defined by partial elements (71; 72; 73; 74) between and/or within themselves. The partial elements have been disposed between the walls (20', 23, 24; 20', 51, 52; 53, 54, 55)of the headbox and of its partial segments, The headbox is cassette-designed (Fig 1), the number, construction and/or turbulence generators of the partial segments being exchangeable to fit the grades that are being produced.

Description

one

 The invention relates to pressure boxes of a paper machine comprising two or more channels for pulp flow.

The purpose of the invention is ease of installation for controlling changes in product quality.

FIG. 1 shows the construction of the pressure box; in fig. 2 shows section A-A in FIG. 1, turbulence generator.

The pressure machine of the paper machine contains two or more channels 1 located between the walls 2, 3 of the body and converging into the nosy-like slit 4 or slit for feeding the slurry of paper pulp to the means for forming the web 5, 6. the hinge axes 8, 9 in the supporting beams 10 and on the bracket 1J, in contact with the beam through the rail 12 attached to it. The rail 7 has the ability to adjust the position with the help of a joint with the hinge axis of the slide 13 moving along screw helical gear 15. Between bracket 11 and bar 7 a screw is inserted driven from gearbox 16. Bracket 11 is fixed by means of a hinge axis 9 on installed guide rails 14 of supporting beams I O. The headbox has flow turbulence generators 17, 18 consisting of of a plurality of individual elements 19, and a distribution feeder consisting of two or 189292

- less than the feed of one or more types of suspension sectors 20-22, the walls 23-27 of each of which are associated with its corresponding generator.

5 rum turbulence. Turbulence generators are located between the walls of the hull and individual sectors, the walls of which are made composite with, respectively, upper and

10 lower sections, each upper section has a protrusion 28, 29, and each lower depression 30, 31, forming between a castle connection. The upper structure of the 32 sock has a possibility

turning around the joint 33 with screws driven by gearbox 34. The screws and gearbox are connected by

20 drive shafts 35, 36.

Headbox works as follows.

In the manufacture of a web that is molded from two or more kinds of slurry coming out of sectors 20-22 through channels 1 into the bow, a slit slit 4 on the means for forming the web 5, 6, the sectors of the headbox can quickly be mounted.

30 through a locking connection to obtain various product quality characteristics without replacing the entire head box. Turbulence generators 17, 18 provide crushing of fibrous lumps, leveling the pressure pulsation of the flow, which contributes to the fabric of good quality. -:

35

ten

FIG. 2

Compiled by E. Petrushova.

Editor O. Kolesnikova Tehred 3.PaliyKorrektor I.Erdey

Order 1142/63 Circulation 355 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

HEADER BOX OF A PAPER MACHINE, mainly for the flow of paper pulp, containing two or more channels located between the walls of the housing and converging into a nose-like slit or slots for feeding a slurry of paper pulp to a web forming tool, turbine generators. ' flow flow distribution distributor consisting of two or more sectors supplying one or more types of suspension, the walls of each of which are connected to a turbulence generator corresponding to it, consisting of many separate elements forming flow passages between each other or inside themselves and located between the walls housing and individual sectors of the distribution feeder, the walls of the sectors are made composite with, respectively, upper and lower sections with respect to the flow of _β current, different t eat, Ф that, for the purpose of installation convenience, to regulate changes in product quality, each upper section has a protrusion, and each lower section has a depression, which form a castle connection between them. SU., .. 1218929