113results about "Doctors" patented technology

Creped fibrous structures having pillows and knuckles, wherein the creped fibrous structures may exhibit improved knuckle properties, such as Knuckle Roughness Ra, Knuckle Roughness Rq, and Knuckle Creping Frequency and methods for making same are provided, and / or may comprise elongate knuckles comprising discrete pillows and / or elongate pillows between first and second elongate knuckles.

The utility model discloses a device for collecting and cleaning adhesive substances on a scraper, which comprises a fixing plate, the scraper is fixed below the fixing plate, a cleaning scraper plate is arranged above the scraper, a guide rail is arranged on the outer side of the fixing plate, a scraper cover is sleeved on the outer side of a scraper device, a moving groove is arranged on the scraper cover, and a gear groove is arranged in the moving groove. A plurality of gears matched with the gear grooves are arranged on one sides of the gear grooves, and each gear is fixed through a fixing block. And after the scraper cleans, the fallen sticky matter falls into the scraper cover, the gear groove is driven to move through rotation of the gear, then the whole scraper cover is driven to move, the scraper cover is cleaned after being taken down, the sticky matter is prevented from polluting finished paper, the cleaning efficiency is improved, and the quality of the finished paper is guaranteed.

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 doctor (20), in particular for printing cylinders and coating systems, includes a doctor edge (21), a doctor body (22), and a curved blade profile (25) which is formed between the doctor edge (21) and the doctor body (22). In order to produce a doctor (20) which reduces the maintenance requirements of a gravure, flexographic, offset and / or digital printing machine and increases the service life of a doctor (20), according to the invention the extension of the curved blade profile (25) from the doctor edge (21) to the doctor body (22) is square or cuboid and / or the extension of the curved blade profile (25) from the doctor edge (21) to the doctor body (22) has at least one turning point (26).

Composite material comprising a matrix material (5) and a reinforcing structure (6) which is embedded in the matrix material (5), characterized in that the reinforcing structure (6) comprises or consists of a mixed textile (1), wherein the mixed textile (1) comprises both sustainable fibers (2) and reinforcing fibers (3).

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).

The present invention provides a pulp scraper and a manufacturing method, the pulp scraper comprises a blade body, reinforcement plates are fixed on both sides of the blade body by fixing parts respectively, the blade body comprises a top fixing part and a bottom blade head part which are formed as one body; the side of the blade head part away from the reel is set as a plane, the side of the blade head part close to the reel is set as a curved surface, the cross section of the curved surface comprises a first curve and a second curve which are smoothly connected to each other; and it satisfies: from the direction close to the reel to the direction away from the reel, the curvature radius of the cross section curve of the curved surface gradually decreases, and the speed of decreasing the curvature radius of the first curve is less than the speed of decreasing the curvature radius of the second curve; on the one hand, the direct scraping contact between the blade head part of a straight line or sharp angle scraper and the reel pulp in the prior art can be replaced by the curved surface, so as to achieve a scraping effect and improve the scraping efficiency while reducing the possible damage to the pulp itself and the scraper itself.

A scraper holder and a scraping device of a machine for producing or processing a fibrous web, wherein the scraper holder has a base plate and a top plate, wherein the base plate and the top plate are tiltable relative to each other about an axis of rotation extending transversely with respect to the machine direction, and wherein the top plate has a holding device for receiving a scraper blade, and wherein the scraper holder furthermore has at least one application tube which is arranged in an interior space of the scraper holder delimited by the base plate and the top plate, a plurality of cleaning openings being provided in the base plate to allow liquid and / or dirt particles to exit the interior space.

The utility model discloses a high-abrasion-resistance Z-shaped scraper, and belongs to the technical field of toilet paper processing. A high-abrasion-resistance Z-shaped scraper comprises a paper breaking scraper body, feed baffles are arranged on the two sides of the paper breaking scraper body and connected with the paper breaking scraper body in an attached mode, Z-shaped scraper teeth are arranged on one side of the paper breaking scraper body, positioning sealing holes are formed in the outer surfaces of the feed baffles, and the positioning sealing holes penetrate through the interior of the paper breaking scraper body. In order to solve the problems that when an existing paper breaking scraper conducts section punching on a paper sheet, the hole site distance cannot be accurately adjusted, and the paper sheet is prone to being directly broken, the feeding depth of the paper breaking scraper is limited and controlled through a feeding baffle, and the Z-shaped cutter tooth area is limited through the thickness of a wedge head; the situation that the Z-shaped cutter teeth exceed the opening depth of the Z-shaped cutter teeth when making contact with the paper sheet, and consequently paper sheet hole positions are torn is avoided.

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 a quickly replaced wrinkling scraper clamp for masking paper production, comprising a device main body, a clamping plate installed on the bottom surface of the device main body, a blade arranged on the inner wall of the clamping plate, two groups of limiting grooves opened on the outer surface of the clamping plate, a first spring installed on the inner wall of each limiting groove, a second spring installed on the inner wall of each limiting groove, an adjusting rod connected to one end of each first spring and the second spring close to each other, a limiting plate connected to the outer surface of each adjusting rod, a group of precision rulers installed on the front and back of the clamping plate, clamping blocks connected to the left and right sides of the device main body, and a locking bolt threadedly connected to the back of the device main body; the blade on the clamping plate can be quickly fixed and released by the adjusting rod and the limiting plate, so the blade can be quickly replaced, downtime is reduced, and production efficiency is improved, and the installation of the precision ruler enables the blade to be limited more accurately.

The invention relates to a web stabiliser (1) for a machine for producing a fibre material web and is characterised in that end-face sealing against a covering (3) is provided either by a sealing element (6) or by a further sealing element (8) which can be moved against the covering (3). The invention permits an advantageous and in particular energy-efficient forming of a negative pressure in the application region of the web stabiliser (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 utility model discloses a scraper with two stone pressing rollers, which relates to the technical field of auxiliary equipment of papermaking machinery and comprises the two stone pressing rollers, the two stone pressing rollers are fixed on a suspension frame through a bearing seat, an adjusting support is arranged on the right lower side outside the bearing seat, a telescopic support is hinged to the end of the support, and a supporting support is hinged to the middle of the adjusting support. The other end of the supporting bracket is hinged to the output end of the telescopic bracket, a scraper base is arranged on the side face of the supporting bracket, a stone roller scraper is installed in the scraper base, a vibration motor is fixed to the scraper base, the telescopic bracket is used for pushing the supporting bracket to move, the scraper base is promoted to rotate by a certain angle, and therefore the stone roller scraper on the scraper base is driven to slowly abut against the surfaces of two stone pressing rollers; after the telescopic support moves to the preset position, the telescopic support stops, the stone roller scraper makes close contact with the surface of the second stone pressing roller, and when the second stone pressing roller conducts machining operation, the stone roller scraper conducts scraping operation on impurities on the second stone pressing roller, the stone roller is kept clean, and the machining efficiency and the product quality are improved.

A blade (6) for creping a paper web (1) from a dryer cylinder (3), said blade having a front surface (2) and a front bevel surface (10) impacted by the paper web and contacting the dryer cylinder with said front surface and said front bevel surface meeting at a contact edge (8), said front bevel surface exhibiting a 3D surface roughness Sa>0.7 μm and / or Sz>18 μm and / or Sq>1.0 μm as measured by ISO 25178.

A scraper holder for a scraping device of a machine for producing or processing a fibrous web has a base plate and a cover plate. The base plate and the cover plate are tiltable relative to one another about an axis of rotation which extends transversely to the machine direction. The cover plate includes a holding device to accommodate a scraper blade. The scraper holder has at least one application tube which is arranged in an interior space of the scraper holder which is delimited by the base plate and the cover plate. One or more cleaning openings are provided in the base plate, in order to allow liquid and / or dirt particles to be removed from the interior space to the outside.

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 invention relates to a bracket for a pivot rod in a doctor arrangement. The bracket has a base with a mounting aperture and adjacent ears with a hole for a pivot rod arranged perpendicular to the base. The bracket is a cast or 3D-printed piece. The invention also relates a doctor arrangement for a fiber web machine.

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 utility model discloses a T-shaped wrinkling scraper, and belongs to the technical field of toilet paper processing. A T-shaped wrinkling scraper comprises a wrinkling scraper body, an inclined face groove is formed in one end of the wrinkling scraper body, a T-shaped transverse knife is arranged above the inclined face groove, the T-shaped transverse knife and the wrinkling scraper body are of an integrated structure, and scraper inserting grooves are formed in the two sides of the other end of the wrinkling scraper body. In order to solve the problems that in the using process of an existing wrinkling scraper, the thickness of a gap between a scraper head and a paper sheet cannot be accurately controlled, the paper sheet can be extruded and broken, and the surface of a drying cylinder can be abraded, a paper combining scraper head is in attached contact with the paper sheet through a resistance ball head; the contact area between the resistance ball head and the paper sheet is small, no obvious indentation is left on the surface of the paper sheet, meanwhile, the resistance ball head with the frosted surface can prevent the condition that the cutter head slips when making contact with the paper sheet, and it is guaranteed that the paper sheet can achieve the good wrinkling effect.

The utility model provides a wet process felt automatic leveling device, relates to leveling technical field, including the support plate, the top of support plate close to the centre is fixedly connected with the U-shaped plate, the inside of top inner wall of the U-shaped plate is provided with the rotating rod, the inside of top inner wall of the U-shaped plate close to both ends is provided with the square cavity, and the square cavity is connected with the rotating rod through the rotating rod. The two ends of the rotating rod penetrate through the inner wall of the square cavity and are rotationally connected with bearings of the rotating rod, and the positions, located in the square cavity, of the surface of the rotating rod are fixedly connected with first bevel gears in a sleeving mode. The first motor drives the second two-way screw rod to rotate, the second two-way screw rod rotates to drive the moving block to move, the moving block moves to drive the U-shaped moving plate to move, and the effect that the edge of a wet-method felt which is conveyed and leveled is embedded into the U-shaped moving plate can be achieved; therefore, the effect of limiting the wet-process felt in the conveying process can be achieved, and the effect of preventing the wet-process felt from shifting in the leveling process can be achieved.