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.
FIELD: pulp-and-paper industry.
SUBSTANCE: fabric 10 is designed to be connected by stitches upon placement onto papermaking machine. Fabric 10 has base fabric 14 with stitch loops on its transverse edges for connecting fabrics into endless web upon placement thereof onto papermaking machine. Stitch made by interdigitated arrangement of stitch loops connected with one another through pin 20 is closed with strip 24 from flow resistant material, or, if base fabric has upper and lower layers, strips of said material are placed between upper and lower layers close to stitch. Owing to flow resistant material, air and moisture permeability of fabric portion adjoining to stitch is essentially identical to said permeability of other portion of fabric for papermaking machine. At least one web layer of staple fiber is tingled with base fabric and flow resistant material.
EFFECT: increased efficiency by providing compensation of difference in air permeability and moisture permeability between stitch and other part of fabric for papermaking machine.
16 cl, 5 dwg
FIELD: equipment for through blowdown drying, may be used in forming, pressing and drying sections of papermaking machine.
SUBSTANCE: base-forming grid has warp threads interwoven with weft threads. Some warp threads are threads of first type and some warp threads are threads of second type. First type warp threads are interwoven with weft threads by plain weave and second type warp threads are interwoven with weft threads by 2/2 serge weave, with first type warp threads alternating with second type warp threads. Second type warp threads are extending in wavy path between adjacent first type warp threads to render required openness to grid.
EFFECT: provision for producing grid with open structure to provide for effective mutual mechanical binding of cured resin with warp and weft threads.
16 cl, 6 dwg
FIELD: production of duck fabrics.
SUBSTANCE: duck fabric is produced from longitudinal and transverse threads, where longitudinal threads are multifilament threads including multiplicity of single thread filaments and at least one thermally fusible filament of thermoplastic material. This at least one thermally fusible filament of thermoplastic material has lower melting point than single filaments of multifilament thread. After thermal processing, multifilament threads become harder and single filaments defining said multifilament threads are secured in conjunction with thermoplastic material of said at least one thermally fusible thread.
EFFECT: improved quality of duck fabric due to keeping of orientation and continuity of connecting loops necessary for bonding of fabric.
25 cl, 5 dwg
FIELD: manufacture of web for papermaking machine.
SUBSTANCE: method involves providing spiral winding of band-shaped woven web, said web having first and second lateral sides, along which first and second edges are respectively extending, each of said edges comprising at least one longitudinal thread interwoven with transverse threads. First and second gaps are arranged adjacent to first and second edges inward thereof, wherein said gaps are free from longitudinal threads, and transverse threads are joining edges with band-shaped web. During spiral winding of band-shaped web, first edge is placed within second gap and second edge is placed within first gap of adjacent coils for producing of continuous spiral seam formed by joining of adjacent coils together. Method allows wide web to be produced from relatively narrow band-shaped spiral-wound woven web.
EFFECT: increased efficiency and provision for producing of wide web for papermaking machine from narrow band-shaped webs.
28 cl, 5 dwg
FIELD: manufacture of cotton cloth for paper-making machine.
SUBSTANCE: the cotton cloth is manufactured by spiral winding of laminated structure with formation of a great number of coils. The laminated structure has lower and upper layers representing bands of the same width. The upper and lower layers are positioned one above the other with a transverse shift so that the non-laminated part of the lower layer is positioned along one side edge of the laminated structure, and the non-laminated part of the upper layer-along the other side edge. At spiral winding of the laminated structure the non-laminated part of the upper layer in one coil is laid on the non-laminated part of the lower layer of the adjacent coil and connected to it obtaining a cloth for a paper-making machine from the spiral wound structure.
EFFECT: provided preliminary manufacture of laminated structure in the form of a band and further use for obtaining of cloth having preset values of width and length by spiral winding.
27 cl, 4 dwg
FIELD: thread for producing fabric used in manufacture of forming, pressing and drying parts of papermaking machines and utilized as reinforcing base for belts with polymer coating used for manufacture of paper, or belts for corrugating machine, or for other commercial units wherein basic material is subjected to dehydration.
SUBSTANCE: fabric is made from single filament thread spirally wound to form closed spiral whose adjacent coils tightly adhere to one another. Single filament thread has first side and second side, said sides having opposite and identical shape. As a result, on spiral winding and resultant forming of multiplicity of coils, first side is tightly inserted into second side of adjacent boundary coil or adheres thereto, with adjacent spiral coils being joined to each other by their adjoining first and second sides to thereby form fabric.
EFFECT: provision for obtaining of desirable air and moisture permeability, and improved controlling of paper bearing surface.
50 cl, 16 dwg
FIELD: paper improved through usage of watermarks and/or embossed members for strengthening of paper sheets and documents manufactured from such a paper.
SUBSTANCE: paper sheet has at least three corners and three sides connected in said corners, wherein angular strengthening watermarks are formed in each of said corners. Alternatively or in addition to it, angular strengthening embossing members are formed in each of said corners. Also, according to another version, paper sheet has at least three corners and three sides connected in said corners, wherein edge strengthening watermarks are formed in the vicinity of mid portion of each of said edges or said watermarks cover mid portion of each of said edges.
EFFECT: increased strengthening of paper sheets and improved protection of documents manufactured from said paper sheets.
21 cl, 8 dwg
FIELD: industrial fabric used in pulp-and-paper industry and associated branches of industry.
SUBSTANCE: industrial fabric comprises threads extending in the course of advancement of paper in machine, and threads extending traverse to course of advancement of paper in machine, said threads being interwoven so as to form woven structure. At least some of threads extending in the course of advancement of paper in machine and/or threads extending traverse to course of advancement of paper are threads having core filament surrounded with enclosure. Core filament and enclosure may be visually distinguished from one another by unaided eye, for example by color, so that wear of industrial fabric surface may be visually controlled during its service life on the basis of changing which is distinguished upon wearing and losses of enclosure from core filament.
EFFECT: provision for controlling wear of fabric in any point on its inner and outer surfaces.
FIELD: pulp-and-paper industry, in particular, production of woven materials.
SUBSTANCE: fabric has woven web with edge portions at its opposite sides. Web and edge portions have transition portions liable to flexure. Fabric also has reinforcement coating on its upper or lower surface. Said coating extends from at least one edge portion through transition zone onto part of web, and has pattern extending onto part of web by variable distance from transition zone and terminates in curves, semi-circles or protrusions of other shape.
EFFECT: prolonged service life and reduced expenses for manufacture of fabric of such structure.
10 cl, 6 dwg
FIELD: pulp-and-paper industry, in particular, cloth shifting technique.
SUBSTANCE: acceleration roll has cloth guiding shaft mounted within bearings positioned at its both sides, said shaft being driven for rotation by means of cloth, and straightening mechanism comprising string positioned on shaft surface. One end of string is immovably fixed on shaft through spring and other end is movably fixed so that string may be shifted around shaft axis.
EFFECT: simplified construction.