A screen cylinder includes a cylindrical screening media having an inflow side and an outflow side. The screening media is formed of a plurality of circumferentially spaced an axially extending wedgewire bars, which have an inflow surface facing the inflow side. The axially extending wedgewire bars have a profile shape optimized to apply a spray on wear resistant coating on their inflow surface.
A screen cylinder includes a cylindrical screening media having an inflow side and an outflow side. The screening media is formed of a plurality of circumferentially spaced and axially extending wedgewire bars, which have an inflow surface facing the inflow side. The axially extending wedgewire bars have a wear resistant coating on their inflow surface. The wear resistant coating is substantially uniform in thickness on the inflow surface at individual axial locations but thicker on the bars on the inflow surface towards the outflow end of the screening media compared to the wear resistant coating located on the bars towards the inflow end of the screening media.
A screen cylinder includes a cylindrical screening media having an inflow side and an outflow side. The screening media is formed of a plurality of circumferentially spaced and axially extending wedgewire bars, which have an inflow surface facing the inflow side. The axially extending wedgewire bars have a wear resistant coating on their inflow surface. The wear resistant coating is thicker on the bars towards the outflow end of the screening media compared to the wear resistant coating located on the bars towards the inflow end of the screening media.
A screen cylinder includes a cylindrical screening media formed of a plurality of circumferentially spaced an axially extending wedgewire bars, which have an inflow surface facing an inflow side. The axially extending wedgewire bars have a profile shape optimized to apply a spray on wear resistant coating on their inflow surface using a spray nozzle. To apply the coating the angle of the spray nozzle is varied in the circumferential direction relative to the inflow side of the screening medium to change the spray angle of the nozzle to apply the coating sprayed on the bars.
A screen cylinder includes a cylindrical screening media having an inflow side and an outflow side. The screening media is formed of a plurality of circumferentially spaced an axially extending wedgewire bars, which have an inflow surface facing the inflow side. The axially extending wedgewire bars have a profile shape optimized to apply a spray on wear resistant coating on their inflow surface.
The present invention relates to a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp or fibre suspensions of the pulp and paper industry or other similar suspensions. The present invention relates more particularly to screening devices, which are usually cylindrical though also conical shapes are known. Such screening devices have basically two optional constructions. A first one comprises a plurality of screen wires positioned substantially axially and at a small spacing parallel to each other. The plurality of screen wires forms a screening surface facing the pulp or fibre suspension to be screened and adjacent wires form screening openings therebetween allowing an accept portion of the pulp or fibre suspension to flow therethrough. The second construction comprises a drilled or slotted sheet metal plate bent to a circular, or in broader terms, rotationally symmetrical shape.
The present invention relates to a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp or fibre suspensions of the pulp and paper industry or other similar suspensions. The present invention relates more particularly to screening devices, which are usually cylindrical though also conical shapes are known. Such screening devices have basically two optional constructions. A first one comprises a plurality of screen wires positioned substantially axially and at a small spacing parallel to each other. The plurality of screen wires forms a screening surface facing the pulp or fibre suspension to be screened and adjacent wires form screening openings there between allowing an accept portion of the pulp or fibre suspension to flow there through. The second construction comprises a drilled or slotted sheet metal plate bent to a circular, or in broader terms, rotationally symmetrical shape.
The present invention relates to a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp or fibre suspensions of the pulp and paper industry or other similar suspensions. The present invention relates more particularly to screening devices, which are usually cylindrical though also conical shapes are known. Such screening devices have basically two optional constructions. A first one comprises a plurality of screen wires positioned substantially axially and at a small spacing parallel to each other. The plurality of screen wires forms a screening surface facing the pulp or fibre suspension to be screened and adjacent wires form screening openings therebetween allowing an accept portion of the pulp or fibre suspension to flow therethrough. The second construction comprises a drilled or slotted sheet metal plate bent to a circular, or in broader terms, rotationally symmetrical shape.
The present invention relates to a method and arrangement for deaerating incoming thick stock or mixture of white water and thick stock in a pulp drying machine comprising a head box 1 for forming a web, a wire section 2 for removing white water from the web, a wire pit 4 for receiving white water from the wire section 2, thick stock feed 5 for forming a mixture of white water and thick stock and one or more deaeration apparatus 6 for removing air. Air in thick stock or in mixture of white water and thick stock is removed actively by feeding thick stock or at least part of the mixture of white water and thick stock trough at least one deaeration apparatus 6 for removing air. The deaeration apparatus 6 can be any apparatus that is used for deaeration. For example the deaeration apparatus 6 is a deaeration pump or a vacuum tank.
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Circulation systems to be used as parts of manufacturing
systems and machines in pulp and paper mills; apparatuses
for pulp and paper mills, namely, pumps, deaerating pumps,
centrifugal pumps, pressure pumps, black liquor pumps,
turbines, pulpers, reject pulpers, thickeners, fibre
recovery units, back water tanks, buffer tanks, deaeration
tanks, stock processors, mixing funnels, overflow level
boxes, suction boxes, couch mixers, cyclones, screens,
mixers, washers, refiners, centrifuges, dryers, mixing
tanks, pressure pipes; circulation systems to be used as
parts of manufacturing systems and machines in process
industry plants; apparatuses for process industry plants,
namely, namely pumps, deaerating pumps, centrifugal pumps,
pressure pumps, centrifuges, thickeners, deaeration tanks,
overflow level boxes, suction boxes, cyclones, screens,
mixers, washers, refiners, mixing tanks, pressure pipes;
turbines, machines and component parts for manufacturing
paper, namely paper machines, head boxes, wires, wire
sections, press and dryer sections, calendars, reels,
winding machines and rolls. Electric, hydraulic and pneumatic measuring instruments for
measuring, recording and monitoring of pressures,
humidity/moisture content and temperature; electric,
hydraulic and pneumatic measuring instruments for liquids
and suspensions; electric, hydraulic and pneumatic pulp and
stock consistency meters; kWh meters, electronic heat
quantity calculators; flow meters for liquids and gases;
data processing equipment, namely computers for controlling
circulation systems in pulp and paper industry; computer
software for controlling circulation systems in pulp and
paper industry. Installation and erection of circulation systems for process
industry, and especially for pulp and paper industry; repair
and maintenance of circulation systems for pulp and paper
industry, apparatus for pulp and paper industry, pumps,
deaerating pumps, centrifugal pumps, pressure pumps, black
liquor pumps, turbines, pulpers, reject pulpers, thickeners,
fibre recovery units, back water tanks, buffer tanks,
deaeration tanks, stock processors, mixing funnels, overflow
level boxes, suction boxes, couch mixers, cyclones, screens,
mixers, washers, refiners, centrifuges, dryers, mixing
tanks, pressure pipes, circulation systems for process
industry, apparatus for process industry, pumps, deaerating
pumps, centrifugal pumps, pressure pumps, centrifuges,
thickeners, deaeration tanks, overflow level boxes, suction
boxes, cyclones, screens, mixers, washers, refiners, mixing
tanks, pressure pipes, turbines, machines and component
parts for manufacturing paper, paper machines, head boxes,
wires, wire sections, press and dryer sections, calendars,
reels, winding machines and rolls; repair and maintenance of
electric, hydraulic and pneumatic measuring instruments for
measuring, recording and monitoring pressure, the amount of
steam and temperature; repair and maintenance of electric,
hydraulic and pneumatic measuring instruments for liquids
and suspensions; repair and maintenance of electric,
hydraulic and pneumatic consistency meters for pulp and
stock; repair and maintenance services of kwh meters; repair
and maintenance of electronic heat quantity meters; repair
and maintenance of flow meters for liquids and gases; repair
and maintenance of data processing equipment for controlling
circulation systems in pulp and paper industry. Industrial research in the field of pulp and paper industry;
technical development and technical consulting in the field
of pulp and paper industry; industrial research in the field
of circulation and pumping systems for process industry;
technical development and technical consulting in the field
of circulation and pumping systems for process industry.
The present invention relates to a degassing centrifugal apparatus (10), such as a degassing centrifugal pump (10) for use in a pulp- or papermaking process. The degassing centrifugal apparatus (10) according to the present invention comprises a rotatable hollow rotor (20) connected to a stationary fluid inlet (14) at one end portion and a stationary liquid outlet (18) at the opposite end portion, and having a gas exhaust (36) for removing gas from the centre thereof. The apparatus further comprises at said inlet end portion means (24) for rotating said fluid and directing it to the inner wall of said rotor (20). The apparatus further comprises a rotatable sensor (42) arranged to measure the layer thickness of a liquid (40) rotating in said apparatus.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
37 - Construction and mining; installation and repair services
Goods & Services
Apparatus for industrial use in the pulp, paper, chemical, food and beverage industries, namely deaerating pumps, power-operated pulper and rejected pulpers, machines to process paper stock, parts of industrial mixing machines, namely mixing funnels; wet broke mixers, mechanical mixing machines, cyclones Overflow level gauges; electric, hydraulic and pneumatic measuring instruments for measuring, recording and monitoring of pressures, humidity/moisture content and temperature, namely pressure sensors and meters, humidity and moisture sensors and meters, temperature sensors and thermometers; electric, hydraulic and pneumatic measuring instruments for liquids and suspensions, namely stock consistency meters, heat volume indicators; kilowatt-per-hour meters; electronic heat quantity calculators; flow meters for liquids and gases Technical consulting concerning circulation systems used in the pulp, paper, chemical, food and beverage industries Installation and maintenance of circulation systems for the pulp, paper, chemical, food and beverage industries, namely installation and maintenance of deaerating pumps, power-operated pulpers and reject pulpers, machines to process paper stock, mixing funnels; wet broke mixers, mechanical mixing machines, cyclones, and pressure screens
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Circulation systems for pulp and paper industry; apparatus for the pulp and paper industry, namely pumps, deaerating pumps, centrifugal pumps, pressure pumps, black liquor pumps, turbines, pulpers, reject pulpers, thickeners, fibre recovery units, back water tanks, buffer tanks, deaeration tanks, stock processors, mixing funnels, overflow level boxes, suction boxes, couch mixers, cyclones, screens, mixers, washers, refiners, centrifuges, dryers, mixing tanks, pressure pipes; circulation systems for process industry; apparatus for process industry, namely pumps, deaerating pumps, centrifugal pumps, pressure pumps, centrifuges, thickeners, deaeration tanks, overflow level boxes, suction boxes, cyclones, screens, mixers, washers, refiners, mixing tanks, pressure pipes; turbines, machines and component parts for manufacturing paper, namely paper machines, head boxes, wires, wire sections, press and dryer sections, calendars, reels, winding machines and rolls. Electric, hydraulic and pneumatic measuring instruments for measuring, recording and monitoring of pressures, humidity/moisture content and temperature; electric, hydraulic and pneumatic measuring instruments for liquids and suspensions; electric, hydraulic and pneumatic pulp and stock consistency meters; kWh meters, electronic heat quantity calculators; flow meters for liquids and gases; data processing equipment, namely computers for controlling circulation systems in pulp and paper industry; computer software for controlling circulation systems in pulp and paper industry. Installation and erection of circulation systems for process industry, and especially for pulp and paper industry; repair and maintenance of circulation systems for pulp and paper industry, apparatus for pulp and paper industry, pumps, deaerating pumps, centrifugal pumps, pressure pumps, black liquor pumps, turbines, pulpers, reject pulpers, thickeners, fibre recovery units, back water tanks, buffer tanks, deaeration tanks, stock processors, mixing funnels, overflow level boxes, suction boxes, couch mixers, cyclones, screens, mixers, washers, refiners, centrifuges, dryers, mixing tanks, pressure pipes, circulation systems for process industry, apparatus for process industry, pumps, deaerating pumps, centrifugal pumps, pressure pumps, centrifuges, thickeners, deaeration tanks, overflow level boxes, suction boxes, cyclones, screens, mixers, washers, refiners, mixing tanks, pressure pipes, turbines, machines and component parts for manufacturing paper, paper machines, head boxes, wires, wire sections, press and dryer sections, calendars, reels, winding machines and rolls; repair and maintenance of electric, hydraulic and pneumatic measuring instruments for measuring, recording and monitoring pressure, the amount of steam and temperature; repair and maintenance of electric, hydraulic and pneumatic measuring instruments for liquids and suspensions; repair and maintenance of electric, hydraulic and pneumatic consistency meters for pulp and stock; repair and maintenance services of kwh meters; repair and maintenance of electronic heat quantity meters; repair and maintenance of flow meters for liquids and gases; repair and maintenance of data processing equipment for controlling circulation systems in pulp and paper industry. Industrial research in the field of pulp and paper industry; technical development and technical consulting in the field of pulp and paper industry; industrial research in the field of circulation and pumping systems for process industry; technical development and technical consulting in the field of circulation and pumping systems for process industry.
