952 results about "Paper machine" patented technology

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-strength papermaking forming net fiber. Comprising the following raw materials in parts by weight: 75-90 parts of polyethylene glycol terephthalate, 5-15 parts of polybutylene terephthalate, 3-10 parts of a modified fiber filler, 2-5 parts of modified graphene, 2-8 parts of silicon dioxide, 0.5-2 parts of a silane coupling agent KH-560, 1-3 parts of an anti-hydrolysis agent, 0.5-1.5 parts of an antioxidant and 0.3-1 part of a lubricant. Wherein the modified fiber filler is prepared by sequentially carrying out modification processes such as silane coupling agent, citric acid-glycerol esterification, iron bismuth oxide loading and the like on glass fibers; the modified graphene is prepared by introducing dopamine, cerium ions and glycidyl methacrylate for modification. The mechanical strength, the hydrolysis resistance and the wear resistance of the fiber are remarkably improved through the synergistic effect of all the components and the melt spinning-multi-stage stretching process, and the fiber is particularly suitable for a forming net of a high-speed paper machine.

The invention belongs to the technical field of production of insulating products, and discloses a production method of an insulating paperboard, which comprises the following steps: grinding pulp through a DD720 double-disc refiner, respectively adding a modified additive PDMS (Polydimethylsiloxane) emulsion and a phenyl silicone emulsion into the pulp, mixing with a cross-linking agent, adding a cross-linking agent, and uniformly stirring to obtain the insulating paperboard. Or adding a modified additive PDMS emulsion and a phenyl silicone emulsion into the slurry at the same time, and then mixing with a cross-linking agent; mechanically stirring the mixed pulp by a propeller, standing, and carrying out drifting purification, papermaking by a paper machine, multi-section hot pressing and cutting and shaping to obtain a finished paperboard. According to the insulating paperboard prepared by the production method, the electrical strength index value of an existing product in air can be improved by 30%-50%, so that the influence of aging damage to an insulating material caused by high-voltage, high-temperature and complex electromagnetic environments in the operation process of a transformer is reduced, the service life of the transformer is prolonged, and the safe operation performance of the transformer is improved.

The invention provides a paperboard and a preparation method thereof. The preparation method comprises the steps that paper pulp is prepared, the paper pulp comprises core layer paper pulp, face lining layer paper pulp, face layer paper pulp and bottom layer paper pulp, and microfibrillated cellulose and chemical pulp are added to at least one of the face lining layer paper pulp and the bottom layer paper pulp to be ground together before grinding; making raw paper from the paper pulp; and coating surface glue on the surface of the surface layer of the body paper. According to the preparation method of the paperboard provided by the embodiment of the invention, the adding point of the MFC applied to the high-speed paper machine system is determined, the influence on the paper machine system is reduced, and dehydration of the pulp and operation of the paper machine are ensured. By combining the papermaking characteristics of a multi-layer paper machine, the surface lining layer and the bottom layer applied to the paper sheets can effectively improve the interlayer bonding strength between the paper sheets, improve TV-16, reduce the use amount of spraying starch in the conventional process or cancel the spraying starch, and improve the operation of the paper machine.

The present invention discloses a lathe for manufacturing vacuum rollers for papermaking machines, which relates to the technical field of cutting equipment and comprises a bed, a tool holder fixedly provided at the top middle portion of the bed, an annular cutting knife rotatably provided on the inner side of the tool holder, the blade of the annular cutting knife facing the center of the circle; a cutting mechanism for controlling the annular cutting knife to cut the roller blank; and a rotating mechanism for rotating the workpiece to increase cutting efficiency. The lathe for manufacturing vacuum rollers for papermaking machines changes the tool and cutting method of the existing cutting lathe, replacing the circular cutting knife with an annular blade, thereby increasing the contact area between the blade and the inside of the workpiece when cutting the cylindrical roller blank, thereby increasing the cutting efficiency. During the cutting process, the workpiece is also slowly rotated, so that the blade can cut all surfaces of the workpiece, which not only avoids the blade from doing work in vain, but also increases the efficiency of the cutting process.

A method for controlling at least one component of a press and / or dryer section of a paper machine comprises the following steps, repeated multiple times: varying (S10) a first control variable of a first component of the press and / or dryer section to approach different operating points of the paper machine, determining (S20) values ​​of a quality criterion for the operating points approached, determining (S30) a first direction of a shift of the first control variable in which the quality criterion is expected to improve, based on these determined values ​​of the quality criterion, and shifting (S10) the first control variable in the first direction.

The invention provides a safe and efficient dedusting device for a papermaking machinery rewinding machine, and relates to the technical field of papermaking dedusting, the dedusting device comprises a rewinding machine body, dedusting mechanisms are symmetrically and fixedly mounted at the upper end of the rewinding machine body, each dedusting mechanism comprises a support, sliding grooves are symmetrically formed in the inner sides of the two supports, and a connecting rod is slidably mounted in each sliding groove; the ion wind bar, the shell and the dust collection head are arranged, dust, attached to the surface of paper due to static electricity, of the paper can be removed through the ion wind bar, the dust is in a loose state, meanwhile, through the shell, the dust can be collected through the dust collection head, and the dust can be collected through the dust collection head. The tension roller assembly can rotate to drive the cleaning roller to rotate, so that the cleaning roller cleans dust which is not adhered to paper due to static electricity, the dust on the paper can be basically eliminated, the dust is subsequently and uniformly collected through the dust collection head, the overall dust removal rate of the device is greatly improved, and the dust removal efficiency is improved. The practicability is improved.

A method of forming a fibrous web on a papermaking machine including the steps of depositing a dilute fiber slurry out of a headbox to a forming area comprising a forming surface made up of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber slurry through the structured fabric, and drying the fiber slurry.

A paper machine clothing, in particular a seam felt for use in the press section of a machine for producing a fibrous web, wherein the paper machine clothing (1) comprises at least one basic structure and at least one layer of staple fibers or short fibers arranged on the basic structure, the at least one short fiber layer being arranged on the side facing the fibrous web and / or on the side facing the machine, wherein the paper machine clothing comprises at least one seam region in which seam loops are connected to one another by at least one plug wire to form a loop of the paper machine clothing, and wherein the at least one short fiber layer is separated in the region of the seam region by at least one cut to form a seam cover and a seam wedge, wherein at least one connecting element (20) is inserted between the seam cover and the seam wedge, wherein the at least one connecting element is connected to the short fiber material of the seam cover and / or the seam wedge in a fitting manner, in particular welded. A method for using such a paper machine clothing.

The invention relates to a waste water auxiliary drainage device for a rotary screen paper machine, which comprises a composite roller, a waste water drainage device and a waste water drainage device, wherein the composite roller is used for extruding coarse cotton cloth and is positioned above a screen part; the water guide mechanism is used for guiding and draining water extruded from the coarse cotton cloth; the water guide mechanism comprises a drainage assembly used for guiding water out; the energy reducing assembly is used for reducing the impact potential energy of water on the drainage assembly; and the water guide mechanism is arranged behind the composite roller along the motion direction of the coarse cotton cloth. According to the rotary screen paper machine, a traditional linear mop is improved into an innovative and adjustable splayed totally-closed dewatering device, so that the problem of water removal in a composite area of the rotary screen paper machine is successfully solved, and the quality of a final product is effectively improved.

The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 100 g / m2, wherein an optimal combination of nonrecycled BCP, BCTMP and recycled pulp obtained from release liner supercalendered Kraft paper is used to adjust the properties of the fiber furnish. While the use of BCTMP enables a product having a higher bulk, the recycled pulp component, which has high compatibility with the paper manufacturing process, enables to balance the manufacturing process and reduce the dimensional changes and shrinkage of the formed SCK paper. The combined presence of the BCTMP and the recycled pulp component in the fiber furnish improves the water removal from the fibers during the SCK paper manufacturing, while the presence of non-recycled BCP produced from softwood improves the formation and runnability of the paper web on the paper machine. This enables to produce SCK paper with improved sustainability, wherein the density may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner.

The utility model relates to the field of paper machines, and discloses a press roll for a paper machine, which comprises a first press roll and a second press roll which are oppositely arranged, a first moving part for driving the first press roll to move, and a second moving part for driving the second press roll to move. Firstly, the second moving part is adjusted to achieve large adjustment of the distance between the first press roll and the second press roll in a large range, and after large adjustment is completed, the first moving part is arranged to control the first press roll to ascend and descend so as to achieve fine adjustment of the distance between the first press roll and the second press roll; and the bevel gear II and the bevel gear rotate to drive the threaded rod to rotate, so that the threaded rod rotationally ascends or descends to drive the sliding column to move upwards or downwards relative to the fixed column, the movable plate I and the first press roll move along with the sliding column, and fine adjustment of the distance between the first press roll and the second press roll is realized. The utility model has the advantages and effects that the distance between the squeezing rollers is convenient to adjust, and the squeezing efficiency is high.

The invention discloses a paper machine wastewater treatment monitoring system, and particularly relates to a wastewater treatment monitoring technology, the system comprises a pretreatment module, a process section wastewater monitoring module, a wastewater abnormity tracing module, a process section wastewater diversion module, a process section wastewater confluence module, a wastewater treatment pool scheduling module, a wastewater treatment evaluation module and a database. According to the pollution index of the wastewater of each process section monitored each time in history, the pollution index of the wastewater of each process section monitored currently is predicted, and the initial flow guide direction of the wastewater of each process section is set. According to the predicted water inlet amount, the discharge amount and the residual capacity of the wastewater pool of each treatment grade, intelligent automatic scheduling between the wastewater pool of each treatment grade and the buffer is realized, scientific treatment of wastewater to flow into the wastewater pool of each treatment grade is effectively realized, efficient treatment of papermaking machine wastewater is realized, and the production efficiency is improved.

A method for cleaning a belt of a through air drying papermaking machine in which a high pressure shower is configured to traverse across a width of the belt of the papermaking machine while ejecting water onto the belt, and a vacuum box is operatively connected to the high pressure shower. The high pressure shower has a width that is less than a full width of the belt.

The utility model provides a paper stabilizer, including a main structure; a pipeline assembly, the pipeline assembly includes an exhaust pipeline, an air supply pipeline and a cylinder exhaust pipeline, the cylinder exhaust pipeline is located in the lower half of the pipeline assembly, the exhaust pipeline and the air supply pipeline are located in the upper half of the pipeline assembly, the first end of the pipeline assembly is an air supply port, the second end of the pipeline assembly is an exhaust port, when the valve is in a closed state, the first sub-chamber is connected to the exhaust port, and the second sub-chamber is not connected to the exhaust port, when the valve is in an open state, the first sub-chamber and the second sub-chamber are both connected to the exhaust port. By integrating the exhaust pipeline, the air supply pipeline and the cylinder exhaust pipeline in the pipeline assembly, the structure of the paper stabilizer is made more compact, and a valve is set in the cylinder exhaust pipeline, according to different production conditions of the paper stabilizer, by controlling the opening and closing of the valve, the vacuum roller is acted on during paper feeding and paper stabilization of the paper machine, so that negative pressure is generated in the corresponding area, so that the paper web below the vacuum roller is closely attached to the surface of the vacuum roller.

An electronic device for determining a location of a seal strip device in a strip of a papermaking machine includes a seal strip location identification component associated with the seal strip device, a current monitoring circuit configured to measure a current through the seal strip location identification component that is associated with the seal strip device, and a location circuit configured to transmit information related to the current through the seal strip location identification component, and configured to receive an address related to the location of the seal strip device. Related methods and systems are also described.

The utility model discloses a rack convenient for replacing coarse cotton cloth, which comprises a rack, a reinforcing plate fixedly connected to the top end of the rack, a lifting lug fixedly connected to the top end of the reinforcing plate, a transmission bin arranged inside the rack, sliding chutes symmetrically arranged on both sides of the rack, and a bidirectional screw rod transversely and rotatably connected to the rack, the two-way screw rod is in threaded connection with transmission plates which are symmetrically arranged, extrusion grooves are formed in the transmission plates, supporting rods are arranged in the extrusion grooves, and rubber layers are fixedly connected to the ends, away from the extrusion grooves, of the supporting rods. The shape of the lifted spreading cloth is controlled, the spreading cloth can be conveniently sleeved with a shaft roller of a paper machine, the downtime for replacing coarse cotton cloth is shortened, the structure is simple, and use is convenient.

The invention relates to the field of papermaking technologies, in particular to dilution preparation equipment for preparing paper pulp from mineral powder. Comprising a feeding hopper for feeding mineral powder, a conveyor for conveying the mineral powder falling from the feeding hopper, a stirring barrel for receiving the mineral powder conveyed by the conveyor, a water supplementing pipe for injecting water into the stirring barrel, and a stirrer for stirring a mineral powder solution in the stirring barrel, a mineral powder solution reaching the set concentration in the stirring barrel is fed into the liquid feeding pipe in the pulp mixing tank of the paper machine, so that mineral powder can be synchronously prepared into a solution with a certain concentration in the process of stirring plant fibers, and then the mineral powder solution is fed into the corresponding pulp mixing tank of the paper machine to be stirred for a short time; therefore, corresponding paper pulp can be obtained, the pulping time is shortened, and the improvement of the papermaking efficiency is facilitated.

The utility model belongs to the field of automation, and relates to an aluminum foil conveying device which comprises a motor, a speed reducer, a rotating shaft, two rotating shaft supporting pieces, a supporting frame, a linkage mechanism and a position sensor. The rotating shaft is provided with a first end and a second end, and the first end of the rotating shaft is connected with the output end of the speed reducer; the two rotating shaft supporting pieces are respectively arranged at the first end and the second end of the rotating shaft and are used for supporting the rotating shaft; the two rotating shaft supporting pieces are fixedly arranged at the two ends of the top of the supporting frame in parallel at intervals. The linkage mechanism is hinged to the middle of the front side of the supporting frame. The position sensor is fixedly arranged on the support frame and comprises an upper end position sensor and a lower end position sensor; the linkage mechanism is matched with the position sensor to control starting and stopping of the motor. The linkage mechanism is matched with the position sensor to control starting and stopping of the motor, and it can be guaranteed that aluminum-foil paper is stably conveyed according to use of the paper cutting machine.

The invention discloses a paper drying process energy efficiency grade monitoring method based on MLP optimization T-PLS. A data processing and clustering module, a deep learning model optimization module, an energy efficiency grade evaluation module and a self-adaptive lifting algorithm application module are included. Preprocessing the input data, and grouping the preprocessed data by using a clustering algorithm; a deep learning algorithm is introduced to extract data features and learn a data non-linear relationship; performing energy efficiency grade evaluation and identification on the data based on the relationship between the papermaking yield and the steam flow of the papermaking machine; a plurality of weak learners are constructed step by step by adopting an adaptive lifting algorithm, and the weights and parameters of the learners are adaptively adjusted according to real-time feedback and model performance so as to continuously optimize the prediction accuracy. According to the method, the overall performance, the recognition accuracy, the energy efficiency grade precision and the environmental adaptability of the model are remarkably improved. The system ensures efficient, accurate and stable operation of the whole process from data input to energy efficiency level output.

The utility model discloses a felt spraying device of a paper machine, which belongs to the technical field of felt cleaning devices, and is characterized in that the felt spraying device comprises a support, spraying pipes and a swing mechanism, two ends of the support are respectively and vertically provided with a support plate, the two symmetrically distributed spraying pipes are arranged between the two support plates, one end of each spraying pipe is sealed, and the other end of each spraying pipe is connected with the swing mechanism. One end of each supporting plate is provided with a water inlet, each supporting plate is provided with two through holes, rotating pipe joints are installed in the two through holes of one supporting plate respectively, shells of the rotating pipe joints are fixedly connected with the supporting plates, and rotating joints of the rotating pipe joints are connected with the water inlets of the spraying pipes; the two spraying pipes are connected through a swing mechanism; the swing mechanism is connected with a motor through a connecting shaft; a plurality of water outlets which are linearly and uniformly distributed are formed in the spraying pipe, and high-pressure spray heads are mounted at the water outlets of the spraying pipe. Compared with the prior art, the device has the characteristics of improving cleaning efficiency and preventing water from entering the motor to cause faults.

An electronic device for determining a location of a seal strip device in a strip of a papermaking machine includes a seal strip location identification component associated with the seal strip device, a current monitoring circuit configured to measure a current through the seal strip location identification component that is associated with the seal strip device, and a location circuit configured to transmit information related to the current through the seal strip location identification component, and configured to receive an address related to the location of the seal strip device. Related methods and systems are also described.

The utility model discloses a paper machine squeezing dewatering roller water collecting device which comprises a machine frame, an upper compression roller and a lower compression roller are installed on the machine frame, dewatering conveying cloth is conveyed between the upper compression roller and the lower compression roller, a concave water collecting plate with an inclined downward angle is arranged below the dewatering conveying cloth, and the concave water collecting plate is arranged on the machine frame. The outer end of the concave water collecting plate is fixedly connected with a water collecting tank, the outer end of the concave water collecting plate extends into an inner cavity of the water collecting tank, the water collecting tank is installed on the rack, the bottom wall of the water collecting tank is communicated with a drainage pipe, and the bottom end of the drainage pipe extends into an inner cavity of a water storage tank; the beneficial effects of the utility model are that the concave water collecting plate can collect the water pressed out by the dehydration conveying cloth into the water collecting tank, and finally the water flows into the water storage tank for temporary storage, thereby preventing the operation ground from being polluted due to the splashing of the squeezed and dehydrated water, and preventing operators from slipping and being injured.

The invention is suitable for the technical field of corrugated paper production equipment, and provides a corrugated paper thickness detection device. Comprising a rack; the multi-light-path optical detection module is fixedly installed on the rack and used for synchronously collecting surface height data of corrugated paper at different width positions; the optical displacement compensation unit is mounted on the rack, is arranged at the paper feeding end of the detection device, and is used for acquiring the transverse offset and the longitudinal vibration quantity of the corrugated paper in operation in real time and outputting a compensation signal; and the data processing unit is electrically connected with the multi-optical-path optical detection module and the optical displacement compensation unit, receives the height data of each laser displacement sensor, calculates the actual thickness of the corrugated paper through a preset algorithm, and outputs a thickness detection result. Through cooperation of the multi-light-path optical detection module and the optical displacement compensation unit, the problem that a traditional device is large in detection error due to transverse deviation of corrugated paper is solved.

The invention discloses a degassing device for a tube bundle pulp distributor of an inclined wire papermaking machine and papermaking equipment, and the degassing device comprises a barrel which is of a hollow barrel-shaped structure; the throat pipe is of a tubular structure and is communicated with the cylinder body, the end, away from the cylinder body, of the throat pipe is of a frustum-shaped structure with the diameter gradually reduced in the direction of the cylinder body, and the end, close to the cylinder body, of the throat pipe is of a frustum-shaped structure with the diameter gradually increased in the direction of the cylinder body; the inlet is communicated with one side, deviating from the cylinder body, of the throat pipe and is used for being communicated with a tube bundle pulp distributor; the exhaust port is formed in the upper part of the barrel; the water outlet is formed in the lower part of the cylinder body and is used for communicating the cylinder body with a white water tank of the slushing pump; and the bubble filtering assembly is arranged in the cylinder body and located above the throat pipe, and the bubble filtering assembly is used for breaking bubbles separated from the gas-liquid mixture. According to the degassing device for the tube bundle pulp distributor of the inclined wire papermaking machine and the papermaking equipment, bubbles in a gas-liquid mixture can be removed, and multiple performance indexes of liquid are remarkably improved.

The invention relates to a white water treatment method based on a paper machine white water recovery treatment system. The recovery treatment system comprises a white water tank, a water feeding pump, a dissolved air tank and a shallow air flotation device which are connected in sequence; a clarified liquid outlet of the shallow air floatation device is connected with a filter, and a clarified liquid outlet of the filter is connected with a clarified white water tank; a wet strength agent feeding point is arranged between an outlet of the white water tank and an inlet of the water feeding pump; the white water treatment method comprises the following steps: adding a wet strength agent at a wet strength agent feeding point, enabling white water to be treated to flow into a dissolved air tank together with the wet strength agent from a white water tank through a water feeding pump, and introducing compressed air into the dissolved air tank to treat a mixture; the treated white water is input into a shallow-layer air flotation device for separation, and the separated clear liquid is input into a clear white water tank after passing through a filter. Compared with the prior art, the air floatation treatment effect and the overall operation efficiency of the paper machine white water recovery treatment system are remarkably improved.

The utility model discloses an automatic papermaking additive adding system which comprises a mixing tank, a self-weighing additive storage tank is arranged on the outer side of the mixing tank, a second gate valve is arranged at a discharge port of the self-weighing additive storage tank, a first gate valve is arranged at an outlet of the mixing tank, and the outlet of the mixing tank is connected with a high-level box of a papermaking machine through a pipeline. The outer edge of the upper surface of the mixing tank is provided with a group of annularly-distributed feeding ports, the feeding ports are connected with conveying pipes of the corresponding self-weighing type auxiliary storage tanks, the side face of the upper portion of the mixing tank is further provided with a water inlet, the water inlet is connected with a water inlet pipe and a metering pump, and the middle of the upper end of the mixing tank is provided with a lifting type stirring driving mechanism. A stirring mechanism positioned in the mixing tank is arranged at the output end of the lifting type stirring driving mechanism; the main control board is respectively connected with the first gate valve, the second gate valve, the metering pump and the lifting type stirring driving mechanism. The utility model has the characteristics that the connecting structure can be simplified and the occupied space can be reduced.

The utility model discloses a screen drum cleaning mechanism which comprises an inclined paper machine, a rotating screen drum can drive a rotating assembly to drive a scraper blade to drive a cavity to rotate to be communicated with a filter hole in the inner top face of the screen drum, the section of the cavity is in a horn shape, a three-way pipe is fixedly connected with the scraper blade, and the input end of the three-way pipe is fixedly connected with a filter screen. A plurality of balls are arranged in a vertical pipe of the three-way pipe and can be attached to the surface of the filter screen, a baffle is arranged on the bottom face of the scraper in an attached and sliding mode, a connecting rod is fixedly connected to the top face of the baffle, the top end of the connecting rod is fixedly connected with the bottom face of the clamping hook, and a plurality of cavities are annularly formed in the surface of the scraper and can be communicated with filter holes in the inner top face of the screen drum. When the electric telescopic rod drives the cavity in the scraping plate to slide through the rotating assembly, the air suction assembly works to suck out paper pulp in filtering holes in the inner top face of the screen drum communicated with the cavity, cleaning of the filtering holes in the surface of the screen drum is achieved, the paper pulp dewatering effect is improved, and the paper pulp dewatering frequency is reduced.

A method of forming a fibrous web on a papermaking machine including the steps of depositing a dilute fiber slurry out of a headbox to a forming area comprising a forming surface made up of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber slurry through the structured fabric, and drying the fiber slurry.