RU1795993C - Machine for casting timber fibrous carpet - Google Patents

Abstract

Usage: in the pulp and paper and woodworking industries at low tide on a machine wood-fiber carpet. SUMMARY OF THE INVENTION: a machine comprises a loop of a lower mesh forming a flat, single-mesh, initial portion of a dehydrated zoma. Above it is mounted an inlet device. The loop of the upper mesh with guide rollers together with the loop of the lower mesh forms a two-mesh dewatering zone in the form of converging in the direction of movement of the wedge nets and the section of joint movement of the nets. Above the suction boxes of the lower mesh, a carpet surface leveler is mounted. The leveler is made in the form of at least two shafts installed inside the loop of the upper mesh and located at the beginning of the converging wedge. 1 ill. ate with

Description

FIELD OF THE INVENTION The invention relates to the production of wood fiber carpet and can be used in the pulp and paper and woodworking industries.

Known casting machine brand XB-1220, installed in the MPO Nevsk Dubrovka. This machine contains a loop of the lower mesh with guide rollers and suction boxes, forming a flat single-mesh initial section of the dewatering zone, over which the inlet device is mounted, and a loop of the upper mesh with guide rollers, which together with the loop of the lower mesh, forms a two-mesh dewatering zone in the form of a converging a wedge and a joint movement section of nets equipped with at least one pair of press rolls, as well as a carpet surface leveler installed in the area of the lower suction boxes grid.

However, particles of the mass and its constituent resins and other components adhere to the equalizer during operation of the machine. The shaft is a hollow cylinder having a mesh surface. Washing this surface with all known methods does not completely eliminate accumulating impurities and, in addition, leads to additional wetting of the carpet. The quality of the carpet surface suffers from the particles of mass adhering to the mesh surface and its constituent components; therefore, in practice, it is necessary to make unscheduled shutdowns for intensive washing of rov-

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thread, however, this reduces the performance of the machine.

The aim of the invention is to eliminate deformation of the surface of the carpet while increasing productivity of the machine,

This goal is achieved by the fact that in the known machine for casting wood-fiber carpet containing a loop of the lower mesh with guide rollers and suction boxes, forming a flat single-mesh initial section of the dewatering zone, above which the inlet device is mounted, and the loop of the upper mesh with the guide rollers forming together with the bottom mesh loop a two-mesh dewatering zone in the form of a converging wedge and a section of joint movement of the nets, as well as a carpet surface leveler mounted on d with suction pockets of the lower mesh, according to the invention, the leveler is made in the form of at least two shafts installed inside the loop of the upper mesh and located at the beginning of the converging wedge. A comparison of the claimed technical solution with the prototype shows that it differs in the execution of the carpet surface equalizer and the place of its installation.

The essence of the invention lies in the fact that by installing a leveler inside the loop of the upper mesh, the latter actually assumes the functions of the mesh surface of the leveler, while providing conditions for its continuous and efficient washing. Thus, a cleaned mesh comes into contact with the carpet, which eliminates deformation of its surface and unplanned stops of the machine for washing the surface of the leveler.

The drawing shows a device, a General view;

The machine contains a loop of the lower mesh 1 with guide rollers 2 and suction cups 3, forming a flat single-mesh section of the dewatering zone, over which the inlet device 4 is mounted, and a loop of the upper mesh 5 with guide rollers 6, which together with the lower mesh loop forms a two-mesh dewatering zone in the form of a converging wedge, as well as a leveler in the form of at least two rolls 7 mounted above the suction boxes .3 installed inside the mesh loop 5 at the beginning of the descending wedge and having the possibility of ver ikalnogo movement. On grid 1, carpet 8 begins to form.

The leveler is equipped with a mechanism for generating an adjustable clamping force 9.

5 The wedge gap contains plenums 10. The casting process is completed at the joint movement section of the nets 1 and 5, equipped with roller presses 11. There are sprayers 12 for washing the nets.

0 The machine operates as follows. The mass from the inlet device 4 is poured onto the net 1, where it is dehydrated under the influence of vacuum on a flat horizontal section to dryness, which ensures no fluidity, but while maintaining the ductility of the carpet (dryness 13-14%). The molded carpet 8 enters the wedge between the nets 1 and 5, where it is exposed to the shafts 7 and the suction

0 boxes 3, and then under the influence of drainage boxes 10, where 23-24% are dehydrated to dryness. Further dewatering is carried out on roller presses 11. The movement of the upper 5 and lower 1 of the nets 5 takes place along the guide rollers 6 and 2.

The process of leveling the surface of the carpet 8 is carried out due to the action of the pressing force created by the mechanism 9 on the shafts 7 through the mesh 5. In this case

0 particles of fibers and other mass components adhering to the nets are washed off outside the working area by the spray system 12 and the washed mesh is again fed into the wedge gap.

5 The intensity of the impact of the shafts 7 is determined not only by the pressing force, but also by the value of the angle of the wedge gap between the grids, which is regulated by the vertical movement of the shafts 7,

0 The leveling operation is constructed so that the impact on the carpet surface (pressing force) eliminates intensive dehydration and the carpet retains its plasticity. After the passage of the shafts 7 canvas

5 is subjected to intensive dehydration in a wedge formed by drainage boxes 10.

The technical solution will allow to prevent deformation of the carpet surface from accumulating on the surface of the means for smoothing dirt, improving the quality of the surface of the carpet and preventing unplanned stops of the machine for cleaning the specified funds, while increasing

5 performance of the machine as a whole.

Claims (1)

The claims A machine for casting wood-fiber carpet, comprising a loop of the lower grid with guide rollers and suction boxes forming a flat single-mesh initial section of the dewatering zone over which the inlet device is mounted, and a loop of the upper grid with guide rollers forming together with guide rollers loop of the lower mesh two-mesh dehydration zone in the form of a wedge converging in the direction of movement of the wedge nets and the joint movement section of the nets, as well as a carpet surface leveler mounted above the suction boxes of the lower mesh, characterized in that, in order to eliminate deformation of the carpet surface while increasing machine productivity, the leveler is made in the form of at least two shafts installed inside the loop of the upper mesh and located at the beginning of the gathering wedge.