26results about "Doctors" patented technology

An apparatus and method for installing or replacing a blade holder assembly in a web forming and processing machine, such as a machine for use in papermaking, paperboard, tissue, printing, and sheet metal applications, is provided. The present invention addresses the limitations of existing blade holder assemblies, particularly premature failure of traditional loading / unloading elements in high temperature environments. The novel blade holder assembly is integrated with a high-temperature-resistant element, and compared with a traditional design, the service life is remarkably prolonged by 5-10 times. The design of the assembly facilitates installation, allows replacement with a small range of disassembly of the machine, thereby reducing downtime and related costs. The invention also provides for enhanced structural integrity and reliability, making it a robust solution to environments that are crucial for high temperature resistance and rapid maintenance. This method ensures improved performance, life and cost effectiveness in maintaining the blade holder assembly within an industrial machine.

The utility model discloses a scraper which comprises a scraper body provided with an air flow channel, an air inlet assembly arranged on the scraper body and communicated with one end of the air flow channel, and a hole blocking assembly arranged on the scraper body and connected with the other end of the air flow channel in a sealing mode, a plurality of air injection holes are further formed in the scraper body, and one ends of the air injection holes are communicated with the air flow channel. An air outlet is formed in the other end of the air spraying hole and is formed in the side surface of the knife body. The device has the advantages that the air flow channel and the air injection holes are formed in the scraper, and compressed air is injected to the area between the compression roller and the scraper through the air injection holes when the roller surface of the compression roller is scraped away by the scraper, so that the pressure intensity of the area between the compression roller and the scraper is lower than the pressure intensity in the blind holes corresponding to the area, and water stains in the blind holes are sucked out; in the whole process, the surface of the compression roller is not impacted, the service life of the compression roller is prolonged, water spots can be rapidly sucked out of the blind holes, it is guaranteed that the roller surface is dry when paper is pressed in the follow-up process, and the paper effect is guaranteed.

The invention relates to a web stabilizer (1) for a machine for producing webs, and is characterized in that the web (3) is sealed at the end side by means of a sealing element (6) or by means of a further sealing element (8) that can be moved relative to the web (3). The invention allows an advantageous and particularly energy-saving negative pressure design to be achieved in the field of use of the web stabilizer (1).

The embodiment of the present application provides a kind of preparation method of high air permeability bamboo pulp lining paper, comprising: S1: fiber raw material is scattered pulp to form first pulp, and the concentration of scattered pulp is 4-6%, and the proportion of bamboo pulp fiber in fiber raw material is greater than or equal to 95%, and the average length of the bamboo pulp fiber is greater than or equal to 1.6mm, and the content of small component in bamboo pulp fiber is less than or equal to 1%, and the proportion of bamboo pulp fiber with length of 1-1.5mm is 6-15%, and then it is ground, formed, dried and wrinkled to form high air permeability bamboo pulp lining paper, so that the high air permeability bamboo pulp lining paper formed by the above method has high strength and high air permeability, and the air permeability is improved by more than 17% compared with the prior art.

The utility model provides a fiber reinforced plastic (FRP) scraper assembly for a paper machine, which particularly relates to the field of paper machines and comprises an FRP scraper and a fixing plate. Blades are arranged at the two ends of the FRP scraping plate, and the lower side of the FRP scraping plate is movably connected with the fixing plate. And a limiting device is arranged at the end part of the FRP scraping plate on the fixing plate. The limiting device comprises a limiting groove and a connecting plate. The connecting plate is connected with the end of the limiting groove and the side of the fixing plate. The cutting edge of the FRP scraper blade is embedded into the limiting groove, and the cutting edge of the FRP scraper blade and the limiting groove are matched with each other. According to the utility model, the replacement cost can be reduced, and the fixation is firm.

The invention discloses an adjustable water scraping plate assembly applied to a papermaking dehydration process, relates to the technical field of papermaking dehydration processes, and aims at improving the collaborative balance problem of heat exchange efficiency and paper integrity in the papermaking dehydration process. A gas outlet plate and a floating ball-balancing weight linkage liquid discharging mechanism are arranged in a mounting gas box, data such as temperature, tension and transmission speed are collected through a parameter detection stage, and then a temperature exchange balance formula and a global collaborative model are established through a multi-section adjusting stage. The vertical stroke, the rotating angle, the paper conveying speed and the gas injection parameter of the water scraping plate are dynamically adjusted based on the balance limit coefficient, the precise cooperation process of the dewatering efficiency and the paper integrity is specifically formed, the dewatering efficiency is maximized on the premise that the paper conveying continuity and the structure integrity are guaranteed, different production working conditions are adapted, and the production efficiency is improved. And the stability and the intelligent level of a papermaking dehydration process are improved.

The invention relates to a crêping doctor and to a production method for a crêping doctor, which crêping doctor comprises a blade-shaped main body which is made of metal, in particular of steel or stainless steel, and which has a running surface that can be placed against the drying cylinder, and an end face which is at least partially covered with an anti-abrasion layer which provides the impact area for the fibrous web, the impact area having a plateau and a number of notches, characterized in that the surface roughness Ra1 of the plateau and the surface roughness Ra2 in the notches differ from one another.

The invention relates to a paper making system comprising a plurality of guide rollers including a first guide roller, a carrier forming a continuous surface contacting the plurality of guide rollers, the carrier having a paper side and a back side and being configured to travel in a first direction around the plurality of guide rollers during a paper making process, a paper stock source configured to provide a paper stock to the paper side of the carrier, a cleaning blade arranged to clean the first guide roller, a vibration sensor configured to detect vibration of the cleaning blade, and a controller in communication with the vibration sensor and configured to receive vibration data from the vibration sensor, analyze the received vibration data, and if the vibration data satisfies a predetermined condition, initiate a corrective action. Moreover, the invention relates to a method for addressing the problem of deposits in a paper making system.

The invention discloses a method for manufacturing coarse-grain fourdrinier double-cylinder hand towels based on wet-process wrinkling, which comprises the following steps of: preparing and treating pulp: mixing fiber raw materials and chemical additives to obtain the pulp with the beating degree of 28-35 degrees SR; the slurry is conveyed to a fourdrinier forming part, dehydration is conducted through a dehydration element with a specific vacuum gradient, and wet paper sheets with fibers arranged in a directional mode and evenly distributed are formed; double-cylinder drying, wherein the wet paper sheet sequentially passes through a first drying cylinder and a second drying cylinder to be subjected to contact drying, so that a semi-dry paper web with the dryness being 88%-92% is obtained; and wet-process wrinkling: carrying out wrinkling operation on the semi-dry paper web by adopting a wrinkling scraper so as to form three-dimensional grains with the depth of not less than 0.8 mm on the surface of the paper web. An integrated process of fourdrinier wire forming, double-cylinder drying and wet-process wrinkling is adopted, and the three links are systematically matched in the material state, energy transfer and physical structure, so that the three-dimensional grain depth and the high-humidity tensile strength of the paper are effectively considered.

A fiber body production apparatus includes a forming mechanism that forms a mixture, a pressing unit that transports the mixture while pressing the mixture, a peeling blade that peels the mixture from the pressing unit, a cleaner that cleans the pressing unit, and a shaping mechanism that shapes the mixture, after a rear end of the mixture passes through the pressing unit, the pressing unit is reversely rotated to move foreign matter adhering to the peeling blade to the pressing unit, after the roller is reversely rotated by a predetermined amount, the pressing unit is rotated forward to transport the foreign matter, compress the foreign matter on the pressing unit, and cause the compressed foreign matter to pass between the peeling blade and the pressing unit, and the cleaner removes the transported foreign matter from the pressing unit.

The utility model relates to the technical field of cleaning, and discloses an antifouling cleaning system of a papermaking drying system, which comprises a spraying device for spraying a cleaning agent on the surface of a drying cylinder to form a protective film and a cleaning device for washing a dry net, and the cleaning device is positioned behind the spraying device; the spraying device comprises a nozzle arranged on one side of the drying cylinder; the cleaning device comprises a nozzle and a vacuum recovery assembly; a cleaning agent is sprayed to the surface of the drying cylinder through the spraying device, and a protective film is formed between the drying cylinder and the wet paper sheet, so that stickers, paper lint impurities and the like on the surface of the paper sheet cannot be tightly adhered to the drying cylinder any more; meanwhile, the cleaning device is used for washing the dry net, and washed dirt is sucked in by the vacuum recovery assembly and then discharged, so that the drying evaporation efficiency and the air permeability of the dry net are improved; the system can prevent stickers from sticking to a cylinder and a net, the operation efficiency of the paper machine is improved, and the energy consumption is reduced.

The utility model discloses a wrinkling scraper and a wrinkling device, and belongs to the technical field of toilet paper production cutters. The cutter comprises a base body and a working face formed at the top of the base body, a blade is formed at the junction of a cylinder face of the base body and the working face, grooves distributed at intervals are formed in the working face in the length direction of the working face, and the grooves penetrate through the width direction of the working face. The width of the top of the groove is controlled within the range of 0.08 mm to 0.40 mm, the opening depth of the groove is controlled within the range of 0.06 mm to 0.35 mm, the width of the top of the groove is gradually reduced, and the gradually-reducing direction of the top of the groove is the direction away from the cutting edge. Through the arrangement of the grooves, crisscross wrinkles can be simultaneously formed on a paper web, so that the water / oil absorption performance of the wrinkling paper is greatly improved. Meanwhile, the depth and the width of the groove are further optimally designed, so that the phenomenon that normal paper scraping of the blade is affected due to the existence of the groove can be effectively avoided.

A sensor signal is generated from a plurality of sensors located on a sensing roll, wherein each signal is generated when each sensor enters a nip between the sensing roll and a mating roll during each rotation of the sensing roll. An oscillating component such as a doctor blade or cleaning shower affects a web of material upstream from the nip. Each sensor generates a sensor signal upon entering the nip. A periodically occurring starting reference is generated that is associated with each oscillation of the oscillating component and the signal generated by each sensor is received so that a particular one of the sensors which generated the signal is determined and one of a plurality of tracking segments associated with the oscillating component is identified. The signal is stored to associate the sensor signal with the identified one tracking segment.

The present invention provides a fiber material production apparatus and a fiber material production method that do not hinder the normal transport of the web by foreign matter such as fiber scraps and paper fragments generated when the web is peeled off from the pressurized section. [Solution] A fiber production apparatus 1 comprising a forming mechanism 50 for forming a mixture W, a pressurizing section 70 for conveying the mixture W under pressure, a peeling blade 76 for peeling the mixture W from the pressurizing section 70, a cleaner 77 for cleaning the pressurizing section 70, and a molding mechanism for forming a fiber W, wherein the pressurizing section 70 rotates in reverse after the rear end of the mixture W has passed through the pressurizing section 70 to move foreign matter E attached to the peeling blade 76 to the pressurizing section 70, and after rotating in reverse for a predetermined amount, rotates forward to convey the foreign matter E and compress the foreign matter E on the pressurizing section 70 so that it passes between the peeling blade 76 and the pressurizing section 70, and the cleaner 77 removes the conveyed foreign matter E from the pressurizing section 70.

Crepe scraper and manufacturing process for a crepe scraper, with a blade-shaped base body made of metal, in particular steel or stainless steel, which has a running surface that can be applied to the drying cylinder, and an end face which is at least partially covered with a wear-resistant layer which provides the impact surface for the fiber web, wherein the impact surface has a plateau and a number of notches, characterized in that the surface roughness Ra1 of the plateau and the surface roughness Ra2 in the notches are different.

The invention relates to a creping blade (1) with a blade-like main part (8) made of metal, in particular steel or stainless steel, said main part having a working edge (2) which can be placed against a drying cylinder (3) and which adjoins an end face (4) with a counter-edge (5). Grooves (6) are worked into the end face (4) and are arranged at a distance to one another, and a wear protection layer (7) is provided on the wall of the main part (9) between the working edge (2) and the main part (8), wherein the grooves (6) are worked at least into the wear protection layer (7).

The utility model discloses a novel papermaking drying cylinder mechanism which comprises a drying cylinder, supports are installed at the two ends of the drying cylinder, a scraper structure is arranged on one side of the drying cylinder, a rotating assembly is connected between the scraper structure and the supports, and the scraper structure comprises an installation shaft, a scraper, an installation hole, a clamping pin, a key block, a second key groove and a compression spring. And the rotating assembly comprises a supporting arm, a supporting plate, a motor, a driving shaft, a driven shaft, a mounting cavity, a worm gear and a worm, and the supporting arm is fixed to the right side of the outer surface of the front end of the support. According to the novel papermaking drying cylinder mechanism, the scraper structure is arranged, the scraper structure is installed in a clamping mode, so that the scraper structure is convenient to assemble and disassemble quickly, after the scraper structure is installed, the scraper structure is driven to rotate through the rotating assembly, and the scraper structure is driven to rotate through the rotating assembly. The scraper is in contact with the surface of the drying cylinder, and rapid adjustment is achieved.

The scraper blade with the groove comprises a scraper body and further comprises a grinding head arranged on the scraper body, and the front face of the scraper body comprises a first plane, a second plane protruding out of the first plane, a cross section connecting the first plane and the second plane and a first inclined face fixing the grinding head. The grinding head comprises a first plane flush with the first plane, a second plane protruding out of the first plane and a connecting face connecting the first plane and the second plane, and the first plane, the first plane, the cross section and the connecting face form a groove. The grinding head has the advantages that the joint of the second face of the grinding head and the upper end face of the grinding head is wrinkled, and chippings generated in the wrinkling process flow into the groove and are discharged along the groove. And as the second surface of the grinding head protrudes out of the first plane, the second surface and the Yankee dryer generate pre-grinding, and the wear resistance is improved.

A plate-shaped doctor blade used for peeling paper from a surface of a roller provided in a papermaking apparatus, the doctor blade comprising: a rectangular body with a longitudinal direction extending in an axial direction of the roller, and comprising a front end that is to be brought into contact with the surface, a rear end opposite the front end and side ends, both of which are in the longitudinal direction, where both ends are chamfered in an arc shape in the longitudinal direction of the front end.

The disclosure relates to techniques for tracking data associated with a wrinkling process. The techniques include measuring process data, where the process data includes vibration data, and where measuring the process data includes measuring vibration data of a corrugating blade using one or more vibration sensors. The techniques also include assigning a score to the process data, including assigning a vibration score to the vibration data. The techniques also include generating an exponential score based on the score of the process data and the vibration score of the vibration data.

The invention relates to a component for a machine for producing and / or treating a fibrous material web. The component comprises at least one layer which is made of a crosslinked non-silicon-containing polymer that functions as a polymer matrix and in which at least one polysiloxane structural unit (ii) is covalently bonded to the polymer matrix. The at least one polysiloxane structural unit (ii) has the following general formula (I): -(SiR1R2O-)n, in which: R1 and R2, independently of each other, are the same or different and are selected from hydrogen, C1-C20 alkyl groups, C2-C20 alkenyl groups, C2-C20 alkinyl groups, C3-C12 cycloalkyl groups, and C5- C12 aryl groups and R1 or R2 has at least one functional structural unit that is selected from the group consisting of amine groups, epoxide groups, anhydride groups, hydroxy groups, alkenyl groups, silyl groups with the Si-H structural motif, and any combination of two or more of the aforementioned groups, wherein said functional groups can preferably react with the polymer matrix or the monomers which make up the polymer matrix, and n is a whole number of at least 3. The crosslinked polymer has a surface energy of maximally 40 mN / m.

This utility model relates to the field of paper production technology, and in particular to a ceramic creping doctor blade assembly for paper production. It includes a base plate, a circular roller mounted on the upper left side of the base plate, a first outer shell fixedly connected to the center of the base plate, a second outer shell whose bottom is fixedly connected to another second outer shell, and a cylinder fixedly connected to the right side of the base plate. This ceramic creping doctor blade assembly for paper production, through the cooperation of a rotating mechanism and a grinding roller, allows the output shaft of a second motor to rotate, driving a worm gear to rotate. This allows for simultaneous grinding of the creping doctor blade and continuous paper processing, saving waiting time and improving work efficiency. Through the cooperation of a swinging mechanism and the creping doctor blade, the continuous rotation of a third motor causes the creping doctor blade to swing continuously, intermittently contacting the circular roller to achieve the purpose of creping. The swinging mechanism ensures indirect contact between the creping doctor blade and the paper, achieving the desired creping effect.

The invention relates to a blade, in particular a doctor blade or sealing blade, for contacting a moving surface in a paper machine, wherein the blade has a facet side contacting the moving surface and a holder side facing away from same, and a length L extending in the width direction of the paper machine when the blade is used as intended, wherein the blade comprises a first polymer component which provides the facet side of the blade and a second polymer component which provides the holder side. The invention also relates to methods for producing a blade of this type.

The utility model discloses a kind of paper scraping doctor blades, including the base body formed by several layers of glass fiber cloth weaving and adhesive, the blade body formed by several layers of carbon fiber cloth weaving and adhesive, the transition section of base body and blade body staggered connection, each layer of glass fiber cloth and carbon fiber woven cloth includes the edge line formed around, 45 ° warp and -45 ° weft that stagger with edge line each other. Advantage: by glass fiber cloth and carbon fiber woven cloth are woven using 45 ° warp 200 and -45 ° weft 300 that stagger each other, improve the strength of woven line at blade body 2 edge horizontal, also facilitate to realize the stagger of transition section 3 carbon fiber woven line and glass fiber cloth, to the strength of entire a kind of paper scraping doctor blade. And base body 1 using glass fiber cloth and blade body 2 of carbon fiber woven cloth compound form doctor blade, can utilize the doctor blade made of carbon fiber material wear resistance, high temperature resistance, long service life reduce cost, can also utilize glass fiber cloth to further reduce cost.