SU890986A3 - Bleeding-in device of paper producing machine - Google Patents

Description

The invention relates to construct. tion of paper machine and can be used in the pulp and paper industry.

It is known that the boom-and-paper machine inlet device contains a wedge-shaped body with a flow determiner having guide channels, longitudinally mounted lateral plastic lips and dividing plates forming channels, the cross-sectional ratio of which along the length of them is constantly GP.

The disadvantages of the known device are the complexity of the guide apparatus from the set of plates installed at the exit of the fibrous suspension from the inlet device, and the impossibility of providing a clear layered flow.

The purpose of the invention is improving the quality of the molded fabric and simplifying the design of the device. 25

The goal is achieved in that in an inlet device comprising a wedge-shaped body with a suspension flow distributor having guide channels, lateral plate lips mounted with the possibility of longitudinal movement and separating plates forming channels, the cross-sectional ratio of which is constant along their length, the separating plates are rigidly fixed in the channels the flow distributor by means of additional plates with gaskets and pins, while the additional plates have openings oriented along direction of movement of the suspension. The device has restrictive plates attached to the sides of the flow distributor.

In FIG. 1 shows a device, a cross section; in FIG. 2 - mount the dividing plates in the flow distributor; in FIG. 3 and 4 additional plates, possible cross sections.

891

The inlet device has a wedge-shaped housing 1 with a flow distributor 2, made with an expanded part at the outlet of the suspension, forming a spasmodic expansion of the suspension flow. On the chamfered sides, the plate lips 3 are attached to the device body, which can be moved along the direction of movement of the suspension to the exit slot 4. The lips 3 are attached to the body using bolts 5 . The dividing plates 6 form channels between themselves and the inner walls of the lips 3, the ratio of the cross sections of which along their length is constant. The separating plates 6 are rigidly fixed in the expanded part of the flow distributor 2 with the help of additional plates 8 having longitudinal openings 9 ”of the gaskets 10 and transverse pins 11. Side plates 12 can be attached to the sides of the flow distributor 2, the upper ends of which 13 are adjacent to the inner the surface of the lips 3, and the pipe 14 for supplying the suspension.

During the operation of the inlet device, the fiber suspension is fed through pipes 14 to a flow distributor 2, in the expanded part of which it expands sharply, due to which the suspension flow acquires small-scale turbulence that improves the properties of the cast web. In the channels formed by the separating plates 6 and lips 3, each stream of the suspension moves to the exit slot 4, where it is connected 4 and is connected into a single stream entering the grid of the paper machine.

Guiding apparatus; due to the simplicity of the design, it is convenient to mount 5 and adapt it for different flow compositions and obtain a high-quality multilayer web.

Claims (2)

38 The inlet device has a wedge-shaped body 1 with a flow distributor 2 made with an expanded portion at the outlet of the slurry forming a spasmodic expansion of the slurry stream. On the sloping sides of the device attached to the body plate lips 3 | having the ability to move along the direction of movement of the slurry to the exit slit 4. The lips 3 are attached to the body. With the help of bolts 5. In the expanded part of the flow distributor 2, dividing plates 6 are installed, having bevels 7 on the side of the slurry outlet. The separating plates 6 form between themselves and the inner walls of the lips 3 channels, the ratio of whose cross sections along their length is constant. Separating plates 6 are rigidly fixed in the expanded part of the flow distributor 2 with the help of additional plates 8, having long holes 9 gaskets 10 and transversely located pins 11. Side plates 12 can be attached to the lateral sides of the flow distributor 2, the upper ends of which 13 are attached to the inner surface of the lips 3, and the pipe 1 for feeding the suspension. When the inlet device is operated, the fiber suspension is supplied through pipes N to flow distributor 2, in the expanded part of which it expands dramatically, due to which the suspension flow acquires small-scale turbulence, which improves the properties of the cast sheet. In the channels formed by the dividing plates 6 and the lips 3, each slurry flow moves to the exit slit k, where it is connected into a single stream to the grid of the papermaking machine. Guide vane; due to the simplicity of the design, it is convenient to mount and adjust for different compositions of the streams and to obtain a high-quality multi-layer fabric. Claims 1. A paper machine intake device comprising a wedge-shaped body with a slurry flow distributor having guide channels mounted for longitudinal movement, side lip lips and separating plates forming the channels whose ratio of cross sections along their length is constant, different that, in order to improve the quality of the cast sheet and simplify the device, its separating plates are rigidly fixed in the flow distributor channels by means of additional plates with gaskets and pins, with the additional plates having holes oriented along the direction of movement of the suspension. 2. The device according to claim 1i is characterized in that it has restrictive plates attached to the bead sides of the flow distributor. . Sources of information taken into account during the examination 1. Published for Germany No. 2b23b 8, cl. About 21 F V02, 1977 (prototype). ff