SU1020475A1 - Apparatus for converting air-suspended fibre flaw in dry paper-production method - Google Patents

Abstract

1. DEVICE FOR FLOW transformations of the aerosuspension FIBERS DURING PRODUCTION OF PAPER DRY comprising formukeduyu curved chamber dividing wall, nozzles for supplying an aerosuspension of fibers and removal of fibers and air, l and m of h and w in its in that, for the purpose increase the device performance and reduce fiber loss; it has a nozzle mounted on the inlet end of the Forming chamber, and the separator is fixed in it. 2. The device according to clause I, that is, with the fact that the dividing wall is perforated. 3. The device according to claim 1, which relates to the fact that the wall of the curvilinear frame with a smaller radius of curvature is made in vi (L de lattice. HpoSsSen Llmvm; about 4i sd ffJfMMf af fKfef yfJffffi, hpoSsSen Llmvm;

Description

The invention relates to a device for converting a stream of aero-suspension of fibers and can be used in the pulp and paper industry in the manufacture of various types of paper by the dry method from natural and chemical fibers, as well as in other industries in which there is a need to transport and separate the particles. ..

A device for converting a stream of airborne suspension, comprising a curvilinear chamber and a forming grid 1, is known.

The disadvantage of the device is that the air separated from the fibers is removed through a mold, which limits the productivity.

A device for converting an aerosoling flow is known, which contains a curved chamber with a partition, nozzles for feeding the aerospace of the fibers and draining the fiber and air 2.

The disadvantages of the known device are inefficient flow separation, large losses of fiber entrained in air, and as a result, low productivity.

The purpose of the invention is to increase the productivity of the device and reduce fiber loss.

The goal is achieved by the fact that the device for converting the flow of air suspension of fibers in paper production by the dry method contains a curvilinear forming chamber with a dividing partition, nozzles for supplying the air suspension of fibers and draining fiber and air / has a nozzle mounted on the inlet end of the forming chamber, and the separator the partition is hinged in it,

At the same time, the dividing partition can be perforated.

The wall of the curvilinear forming chamber with a smaller radius of curvature is made in the form of a lattice.

The drawing shows the device, the overall appearance.

A device for converting the flow of aerospace fibers consists of a nozzle 1, a curved chamber 2, two walls 3 and 4 of which have a different radius of curvature, an internal movable partition 5, nozzles b for draining the fibers and 7 for exhausting air.

The nozzle 1, attached to the curvilinear chamber 2, serves to accelerate the flow of aerosol suspension of fibers. The degree of compression of the flow in the nozzle 1 is not less than 1.5, which contributes to more efficient operation of the nozzle and the entire device.

In curved chamber 2, two stacks 3 and 4 of which have a different radius of curvature, an internal movable partition 5 is installed along the walls of the chamber, dividing chamber 2 into two parts. The width of the partition 5 is equal to the width of the chamber 2, and its length is no more than 4/5 of the length of chamber 2. The mobility of the partition 5 is necessary for the isolation of the fiber flow from the first air flow. The position of the partition 5 inside the chamber 2 in each particular case depends on the mass of transportation of particles by the air flow and the greater the mass of particles, the closer the partition 5 is to the wall

3 (wall with a large radius of curvature).

The movable partition 5 can be either solid or perforated. Perforation helps to further remove air from the fiber stream.

Wall 4 with a smaller radius of curvature can be made in the form of a lattice, then the device does not contain a pipe 7 for removal. The dimensions of the lattice holes are at least 5 mm.

The device works as follows.

The flow of aerosol suspension of fibers enters the nozzle 1, in which the flow rate increases, which contributes to a more efficient separation of media.

Coming out of the nozzle 1, the flow of the air suspension of the fibers enters the-curvature auger chamber 2, where under the action of the centrifugal force the fibers are deflected towards the wall 3 with a large radius of curvature and move along it to the nozzle O for the removal of the fiber, and the air having a density of smaller, separated from the fibers and along the wall

4 with a smaller radius of curvature is removed from chamber 2 through nozzle 7.

The separation of media is facilitated by an internal movable partition 5, which separates the flow of fibers and air and directs the flow of air into the pipe 7. The partition 5, in addition, prevents the airflow of the fibers from seizing and reduces fiber loss. The position of the movable partition 5 in the chamber 2 is established depending on the mass of particles transported by the stream.

The implementation of the partition 5 perforated contributes to the additional removal of air and a greater concentration of the flow of fibers.

If the wall 4 with a smaller radius of curvature is made in the form of a lattice, the air from Chamber 2 is removed through the holes in this lattice.

The layer of uniformly thickened fibers leaving the chamber 2 through the nozzle 6 enters the forming device.

31020475-

Application of the proposed device fiber. Increased production for converting the flow of airstrift device is achieved by

fiber si gives the opportunity for osucest-separation of the flow with large speed efficient separation of the flow of it and due to more efficient

aerosol suspension of fibers and reduce fluid loss.

Claims (3)

1. DEVICE FOR TRANSFORMING AERO SUSPENSION FLOW OF FIBERS WHEN PRODUCING PAPER WITH A DRY METHOD, containing a forming curvilinear chamber with a dividing wall, nozzles for supplying aero-suspension of fibers and removal of fiber and air, with the aim that increase the productivity of the device and reduce fiber loss, it has a nozzle mounted on the inlet end of the forming chamber, and the separation · partition is pivotally fixed in it. 2. The device according to π. 1, which is characterized in that the dividing wall is perforated. 3. A device according to claim 1, of aphid ^x -. Sistent in that the wall of the forming chamber with krivolinoynoy § PWM smaller radius of curvature and is formed in a lattice de-ι. If and .1020475> 10204’75