Hydroplane wire section of the paper machine

 

(57) Abstract:

Usage: in the pulp and paper industry, relates to the drying of the items to be installed in the wire section of the paper machines. The inventive dewatering element is hydroplane, comprising a housing, made of rows of sections having on the inner surface of the tabs. With the case associated with the connection of the dovetail insert dialed from a separate end-to-end across the width of the machine wear-resistant elements. These elements are in contact with the side surfaces of their tail parts with the tabs of the shell sections. Mounting means connected between a section of the housing. The body is made in the form of a frame, and the protrusions are formed of separate metal plates located opposite the joints wear-resistant elements. Plates are rigidly connected in a cross-section of the housing and respectively with two adjacent wear resistant elements. Wear-resistant elements can be simultaneously mount two adjacent sections of a number. 1 C. p. F.-ly, 5 Il.

The invention relates to dewatering elements that are installed in the wire part of paper-making machines, and can be ISP), contains the upper ceramic part that is in contact with the grid, and the base of thermosetting resin. On the lower surface of the base along the entire length of hydroplane made T-shaped groove, with which hydroplane is installed in the wire section for supporting the cross beam. The basis of the entire length of the reinforced steel construction T-shaped profile, flush mounted in the base on its axis and as if separating the base width in half.

However, the failure of any part of the wear-resistant inserts must papermaking machine to stop and replace hydroplane.

Closest to the present invention is hydroplane (ed.St. USSR N 1677125, class D 21 F 1/46) containing made from separate sections polymer case with it is located in an insert in the form of individual is placed across the width of the machine wear-resistant elements. Case and insert are connected by connection type dovetail, and a separate section of the polymeric body connected fastening means, the length of sections equal to the length of the respective wear-resistant elements.

Mounted on T-shaped guide the first module using the CE is, amyraut hydroplane required length.

Pushing hydroplane sever the fastening elements adjacent modules and to rotate about the axis of the fastening means, carry out the removal of hydroplane without stopping the machine.

However, when working under high temperature conditions is the warping of the ceramic elements, resulting in damage to their frontal surfaces due to significant difference in temperature coefficients of linear expansion of the polymer shell and ceramic inserts (more than 10 times).

The invention is aimed at creating a reliable and durable design of hydroplane working in conditions of high temperature deformation, as well as on the exclusion of raznovysotnoet installation of wear-resistant elements across the width of the machine.

This is achieved by the fact that in the known hydroplane, comprising a housing, made of rows of sections having on the inner surface of the tabs associated with the housing connection type dovetail insert elected from separate end-to-end across the width of the machine wear-resistant elements in contact with the side surfaces of their tail parts with the tabs of the shell sections, and crepet a metal frame, and the tabs are formed of separate metal plates located opposite the joints wear-resistant elements, and the plates are rigidly connected in cross section with the housing and respectively with two adjacent wear resistant elements.

This is also achieved by the installation of extreme wear-resistant elements in the housings so that they are common to two adjacent sections.

The invention consists in the fact that the availability of land between accommodated in the housing lugs rigidly connected with wear-resistant elements, eliminates warping wear-resistant elements and their damage when measuring temperature conditions.

In Fig.1 shows hydroplane cross section; Fig.2 one of the shell sections, a top view; Fig.3 is a view As in Fig.1; Fig.4 connecting adjacent sections of the casing; Fig.5 adjacent section, top view.

Hydroplane contains installed in made from separate sections of the housing 1 and an associated connection type dovetail insert in the form of a separate wear-resistant (ceramic) element 2 and the mounting means 3 for connection of the sections of the body made in the form of hard metal is again the tail portion of the wear-resistant elements, when metal plates are located one above the other holes for the passage of additional fasteners: screws 5 and nuts 6, rigidly connecting the cross section of the frame plates and two neighbouring wear-resistant element and the plates 4 mounted between restrictive bushing 7 and the frame 1.

Extreme wear resistant elements of each of the sections rely simultaneously on the buildings adjacent sections.

The device operates as follows.

When working with mass whose temperature exceeds the ambient temperature by 20-40about(For example, in the production of newsprint), resulting from thermal deformation is the change in the length of the ceramic elements 2 and plate 4 of the housing 1. Due to the rigid frame of the housing 1 with the plates 4 and restrictive sleeves 7 of the fastening means securely wear-resistant elements, preventing movement of the latter in the transverse direction. At the same time, the availability of land between tabs does not prevent longitudinal extension of the frame 1 together with a wear resistant elements. Thus despite differences in the values of coefficient of linear expansion doctitle, for example, polymer, since they have a coefficient of linear expansion closer to ceramics).

To replace hydroplane enough to disconnect the fastening means 3 sequentially each of the sections of the body, shifting the last of the T-shaped rail.

The placement of the tabs across the joints between adjacent wear resistant elements is fixed to one of the base surface (i.e., the corresponding protrusion) of the adjacent elements 2 inserts, eliminating the distortions and raznovysotnoet within the last section, as well as preventing damage to the end surface elements.

Installation of extreme wear-resistant elements sections simultaneously in two adjacent buildings installs on the same level all the wear items on the width of the car, enhancing the quality of the finished product.

1. Hydroplane wire section of the paper machine, comprising a housing, made of rows of sections having on the inner surface of the tabs associated with the housing connection type dovetail box from a separate, typed butt across the width of the machine wear-resistant elements in contact with the side surfaces of their hvost is the rpm die, that case made of separate sections, is a metal frame, and the protrusions are formed of separate metal plates located opposite the joints wear-resistant elements, and the plates are rigidly connected in a cross-section of the housing and respectively with two adjacent wear resistant elements.

2. Hydroplane under item 1, characterized in that the wear-resistant elements are fixed simultaneously in two adjacent sections of the line.

 

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