58results about "Doctors" patented technology

The invention is applicable to the technical field of air scrapers, and provides a rotary bottom support air scraper and a control system, the rotary bottom support air scraper comprises racks, a scraper body, a sealing frame assembly and a groove body, the racks are mounted at two ends of the scraper body, the racks at the two ends are in a mirror image relationship, the sealing frame assembly is mounted on the racks at the two ends, and shaft heads at the two ends of the scraper body are provided with sliding bearing seats and handles. According to the scheme, the sliding bearing seat and the handle are installed on the shaft heads at the two ends of the scraper body, the handle and the scraper body synchronously rotate through the spline, a traditional suspension support design is abandoned, the position of the scraper body can be directly adjusted through the handle during overhauling, and a fixing structure does not need to be detached; the blade is fixed on the scraper body through the screw, so that the blade is convenient to disassemble and assemble when being replaced, the shutdown maintenance time is greatly reduced, and the labor intensity of maintenance personnel is reduced; the axial sealing piece on the groove body is fixed through the pressing plate, and one end of the axial sealing piece is in close contact with the bottom of the scraper body; double sealing can prevent slurry from entering equipment gaps.

A metering rod holder assembly for supporting a metering rod in compressive engagement with a surface from which a fluid is to be metered. The rod holder assembly includes a base member having a channel opening to a first face thereof, and a rod bed insert at least partially received in the channel of the base member in spaced relation to a base wall of the channel. The rod bed insert includes a metering rod slot for receiving a metering rod, and a flank engaging surface engaged with at least one flank surface of the base member, the rod bed insert movable from a first position to a second position within the channel.

A plurality of studs mount a doctor blade holder to a doctor back in a fiber web machine for slidable extraction of the doctor blade holder in the cross machine direction. Each stud (15) has a body (16) with a cylindrical center segment with a protruding nonround flange (17) formed as a single piece with the center segment. Opposed flats of the nonround flange of the body (16) may be engaged by the opposed parallel jaws of a conventional wrench allowing ready attachment of the studs to the doctor blade holder and subsequent installing within the channel of a rail which is mounted to the doctor back. A slide bar may be fixed to the doctor blade holder to extend out of the rail for engagement and extraction of the doctor blade holder.

The utility model discloses a papermaking drying cylinder roller scraper protection assembly adaptive to a papermaking process, which belongs to the technical field of papermaking equipment, and is characterized by comprising a base, two sides of the top of the base are fixedly connected with racks, and the tops of the two racks are rotatably connected with a drying cylinder body through bearing seats; a scraper body is arranged on the front side of the bottom of the drying cylinder body, a protection adjusting assembly is arranged at the bottom of the scraper body, and an installation fixing assembly used in cooperation with the scraper body is arranged at the top of the protection adjusting assembly. The problems that after long-time use, a drying cylinder is in a high-speed rotating state, fixed contact force is prone to damaging a scraper, so that the production cost is increased, the downtime is prolonged, an existing scraper mounting and fixing mode is troublesome, the scraper is inconvenient to disassemble, maintain or replace in the later period, and inconvenience is brought to a user are solved.

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).

To provide a UV ink jet receptive primer that can be applied on a corrugated board manufacturing device.SOLUTION: A UV ink jet receptive primer is applied by a corrugated board manufacturing device to produce a UV ink jet printable, continuous folded, corrugated material (e.g. fan fold). Priming is performed in-line by the corrugated board manufacturing device. The primer withstands the heat, humidity, and abrasion of the corrugated board manufacturing device, yielding a surface that can be printed with UV inkjet ink and resulting in a high quality image.SELECTED DRAWING: Figure 1

The utility model discloses an edge water spraying structure of a drying cylinder. The edge water spraying structure comprises the drying cylinder, a drying cylinder scraper, a spraying rod, a chemical medicine baffle and a chemical medicine spraying pipe, the chemical medicine spraying pipe is placed below the drying cylinder in parallel, the chemical medicine baffle is located below the drying cylinder in parallel and is not connected with the drying cylinder, the spraying rods are fixed to the two ends of the chemical medicine baffle through spraying rod bases, and the spraying rods are perpendicular to the drying cylinder; by adjusting the position of the spraying rod, the newly designed position is superior, the operation condition of the nozzle can be observed in a contact manner at the channel, the position adjustment is convenient and safe, the nozzle can be cleaned on line, the phenomena that yellow edges are accumulated due to the blockage of the nozzle, and raw paper is broken are avoided, and the purposes of being safer, more convenient and more practical are achieved.

The invention discloses a production process of a high-thickness and low-gram-weight paper product and paper for daily use, and relates to the technical field of papermaking. The process comprises the following steps: mixing hardwood pulp and softwood pulp according to the proportions of 70%-80% and 20%-30%, and performing swelling treatment, wherein the concentration is controlled to be 2.0%-3.0%, the temperature is controlled to be 40-55 DEG C, the time is 30-60 minutes, and the pH value is controlled to be 7.0-8.0; grinding to enable the brooming rate to reach 45%-60% and the beating degree to be 32-40 degrees SR; dehydrating and forming through a 60-80-mesh forming net at the speed of 0.8-1.2 m / s; a 15-25 kN / m linear pressure carrier roller is adopted for squeezing, and the medium-high value is controlled to range from 0.3 mm to 0.8 mm; the wrinkling ratio is controlled to be 75%-80%, and frequency conversion control, water circulation or steam heat preservation and energy conservation measures are matched. The gram weight of the prepared household paper is 9-15.5 g / m, the thickness is increased by more than or equal to 20%, the household paper has the characteristics of light weight, fluffiness and softness, the production energy consumption is reduced by more than 10%, and the household paper is suitable for green and efficient manufacturing of high-end household paper.

The utility model discloses a device for detecting linear pressure between a drying cylinder and a scraper, and belongs to a pressure detection device. The device comprises a pressure sensor, a sensor fixing disc, a control rod, a control and display device and a power supply connecting device, the pressure sensor is installed on the sensor fixing disc, and the control rod is connected with the sensor fixing disc and used for controlling movement of the sensor fixing disc. The pressure sensor is electrically connected with the control and display device, and the control and display device is electrically connected with the power supply connecting device. The device can perform line pressure detection in a narrow space of 1.5-3cm, the pressure sensor is fixed on the control sensor fixing disc, and the diameter of the control sensor fixing disc is 5-8 times that of the pressure sensor, so that the local pressure bearing of the scraper is reduced, the influence of local deformation of the scraper on measurement and the deformation of a back knife during detection is avoided, and the detection accuracy is improved. And the pressure sensor is digitally displayed in combination with the control and display device, so that portable mobile measurement is realized.

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 relates to the technical field of scraper adjustment, and discloses a scraper adjusting mechanism which comprises a main frame, an extrusion assembly is installed on the inner wall of the main frame and used for extruding paper, a cleaning assembly is installed on the inner wall of the main frame and used for cleaning water and paper pulp on the extrusion assembly, and the cleaning assembly comprises a connecting frame. The connecting frame is rotatably mounted on the inner wall of the main frame, a mounting frame is fixedly connected to the side wall of the connecting frame, and a two-way threaded rod is rotatably connected to the top of the mounting frame; according to the scraper adjusting mechanism, by means of threaded connection between the two-way threaded rod and the sliding plate, when the two-way threaded rod rotates, the distance between the roller scraping knife and the lower pressing roller is adjusted, water stains and paper pulp on the side wall of the lower pressing roller can be conveniently cleaned through the roller scraping knife when the lower pressing roller rotates, and when too much paper pulp is attached to the side wall of the roller scraping knife, the connecting frame can be rotated; and the roller scraping knife at the bottom of the connecting frame rotates to the position below the lower pressing roller, and the lower pressing roller continues to be cleaned.

The invention relates to the technical field of papermaking processes, in particular to a production process of living paper. The production process provided by the invention comprises the following steps: taking needle leaf pulp and broad leaf pulp as raw materials, then preparing the pulp according to a certain proportion, then introducing a bulk improver, a wet strength agent and a softening agent, and carrying out molding and squeezing to obtain wet paper; and drying the wet paper, and then wrinkling to obtain the life paper. Wherein in the repulping process, the pulping process is optimized, the fiber form is changed, the damage to the fiber structure is reduced, and the bulkiness of the fiber is improved; a specific additive is adopted for compounding before papermaking, so that the bulk of the paper is greatly improved under the condition of small investment; and a certain wrinkling cutter angle is controlled in the wrinkling process, so that the bulkiness can be improved. Through control in the multiple aspects in the process, the bulk of the paper is effectively improved, and meanwhile, the paper has good strength, water absorption and softness.

The invention relates to a blade, in particular a scraper blade or sealing blade for contacting a running surface in a paper machine, the blade having a cutting edge side that contacts the running surface and a retaining side that faces away from the running surface and having a length L that extends in the width direction of the paper machine when the blade is used as intended, the blade includes a first polymeric component providing a cutting edge side of the blade and a second polymeric component providing a retention side. In addition, the invention also relates to a manufacturing method of the blade.

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 present disclosure relates to techniques for tracking data associated with a creping process. The techniques include measuring process data, where the process data includes vibration data, and where measuring process data includes measuring vibration data of a creping 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 index score based on the score of the process data and the vibration score of the vibration data.

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.

To provide tissue paper excellent in softness.SOLUTION: In tissue paper containing a softener, a dry tensile strength in the longitudinal direction is 200 cN / 25 mm or more and 400 cN / 25 mm or less, and the degree of elongation in the longitudinal direction is 5% or more and 25%, and a tensile stress in the longitudinal direction in a proportional limit is 160 cN or more and 250 cN.SELECTED DRAWING: Figure 1

The invention relates to a component for a machine for producing and / or treating a fibrous web, said component comprising at least one layer consisting of a cross-linked silicon-free polymer which acts as a polymer matrix and which is covalently bonded to the polymer matrix in a polysiloxane structural unit ii). The at least one polysiloxane structural unit ii) has the following general formula (I):-(SiR1R2O-) n in which: R1 and R2 are the same or different independently of each other and are selected from hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C12 cycloalkyl and C5-C12 aryl, and R1 or R2 has at least one functional structural unit selected from the group consisting of hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C12 cycloalkyl, and C5-C12 aryl, and R1 or R2 has at least one functional structural unit selected from the group consisting of hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C12 cycloalkyl, and C5-C12 aryl. N is an integer of at least 3, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, or an integer of at least 1, or an integer of at least 1, or an integer of at least 1, or an integer of at least 2, or an integer of at least 1, or an integer of at least 2. The cross-linked polymer has a maximum surface energy of 40 mN / m.

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.

A drawing type broken paper blowing device comprises a plate body assembly, a scraper blade, a connecting assembly, a guide rail provided with a sliding groove, a driving assembly and a blowing mechanism, the plate body assembly comprises an upper pressing plate and a lower pressing plate which define an adjusting space, and a plurality of scraper clamping blocks used for being inserted into the scraper blade in an inclined mode are arranged outside the adjusting space on the face, close to the lower pressing plate, of the upper pressing plate; the connecting assembly comprises a connecting shaft penetrating into the adjusting space, a plurality of supporting shafts arranged on the connecting shaft in a sleeving mode and a plurality of rolling wheels fixed to the lower pressing plate. The driving assembly comprises an opening air bag and a pressurizing air bag which are oppositely arranged on the two sides of the connecting shaft in the adjusting space, two air bag pressing pieces for fixing the two ends of the opening air bag and the two ends of the pressurizing air bag, a first air source connector communicated with the opening air bag, and a second air source connector communicated with the pressurizing air bag. The air blowing mechanism comprises an air bin fixed to the upper pressing plate, an air inlet pipe and an exhaust pipe, wherein the air inlet pipe and the exhaust pipe are communicated with an inner cavity of the air bin. A plurality of air blowing openings which are arranged at intervals in the length direction of the upper pressing plate and are communicated with the inner cavity of the air bin are formed in the outer surface of the air bin adjacent to the scraper blade.

The utility model relates to the technical field of scraper wigglers, and provides a pneumatic scraper wiggler which comprises a base, a connecting sleeve is rotatably connected to the middle of the base, a rotating shaft is rotatably connected into the top end of the connecting sleeve, connecting blocks are fixedly connected to the two ends of the rotating shaft, and a table plate is fixedly connected to the tops of the connecting blocks. A pneumatic swing table is fixedly connected to the middle of the top end of the table disc, rocker arms are arranged at the output ends of the two ends of the pneumatic swing table, a cradle is arranged in the middle of the table disc, and the rocker arms arranged at the two ends of the pneumatic swing table abut against the cradle. According to the pneumatic scraper device, the rotating shaft can be rotated to drive the table disc to conduct angle adjustment, the vertical angle of the device can be adjusted, the horizontal angle of the device can be changed through rotation, the horizontal angle and the vertical angle of the device can be changed, and therefore the pneumatic scraper device can be applied to different use scenes, and the use flexibility is higher.

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.