196 results about "Woodchips" patented technology

The invention discloses an automatic calculation and compensation method and system for dynamic strike delay of a laser weeding robot, and belongs to the technical field of agricultural intelligent equipment.The method is achieved through the following steps that in the static calibration stage, a laser galvanometer, a camera and collaborative parameters of the laser galvanometer and the camera of a robot system are corrected; laser scanning nonlinear errors, camera imaging distortion errors and pose and mapping errors between a galvanometer coordinate system and a camera coordinate system are eliminated; in the dynamic testing stage, the robot advances at a constant speed, laser striking is conducted on the wood chips with preset marks, and the position deviation between an actual striking point and a theoretical target point is obtained through the image recognition technology; reversely deducing system delay time based on the deviation and the speed of the robot, and iteratively updating compensation parameters; finally, after the iterative optimization strike deviation is smaller than the set precision, the compensation parameters are solidified to a control system; the method is suitable for a laser weeding robot and other dynamic visual striking systems.

1. Name of the designed product: wood chip candle wick. 2. Use of the designed product: the designed product is used as a candle wick. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention discloses an chemi-mechanical pulp production method capable of improving the filtration property of chemi-mechanical pulp, and relates to the technical field of papermaking, high-concentration grinding freeness is optimized to 640 + / -30ml, pulp fine fibers can be controlled at 22%-33%, the tensile index middle-lower limit and the bulk middle-upper limit, the high-concentration grinding effect is improved, the effect between fibers is facilitated, the effect between the fibers and a grinding sheet is reduced, and the filtration property of the chemi-mechanical pulp is improved. Fiber cutting is reduced, and the content of pulp fine fibers is reduced; the MSD torque is increased to 250 + / -10 KNM, the tearing effect of wood chips is improved, the preimpregnation reaction of the wood chips is facilitated, the original fine content is controlled to 26%-29% from original 22%-33%, the pulp bulk is increased by about 0.1 cm < 3 > / g, and the tensile index is increased by 1.0 N.m / g; the four low-concentration grinders are changed into parallel connection, so that the residence time of pulp in the low-concentration grinders is prolonged, the cutting effect of the pulp ground by the low-concentration grinders on fibers is reduced, light friction between grinding sheets and the fibers is increased, fibrillation of the fibers is facilitated, the bulk and the tensile strength are improved to a certain extent, and under the content of fine fibers, the size of the fibers is reduced. And the bulkiness and the tensile index of the finished pulp are also improved to a certain extent.

The present application relates to pulping technology field, the present application provides a kind of high-strength high-cleanliness chemical pulp's pulping process, with bamboo willow edge scrap as fiber raw material, after 1 stage pre-steaming, chip washing, dehydration, 2 stage pre-steaming;The wood chip material after 2 stage pre-steaming is 1 stage extrusion and is dissolved, 1 stage chemical liquid pre-impregnation, 2 stage extrusion and is dissolved, 2 stage chemical liquid pre-impregnation;1 stage chemical liquid pre-impregnation uses sodium hydroxide solution and does not use hydrogen peroxide, the chemical reagent of 2 stage chemical liquid pre-impregnation process is sodium hydroxide, hydrogen peroxide and sodium silicate;Material after 2 stage chemical liquid pre-impregnation is 1 stage refining, separation, cooling, 1 stage high-concentration bleaching, 1 stage dehydration, 2 stage high-concentration bleaching, 2 stage dehydration;Pulp after 2 stage dehydration is latent, refining etc., and the finished product is prepared.This application process can produce high-strength, high-cleanliness chemical pulp, and the pulp cost is lower, and the pulp quality is better, and it is beneficial to high-end cultural paper etc. application.

The invention relates to flexible hydrogel based on a cellulose framework as well as a preparation method and application of the flexible hydrogel, and belongs to the technical field of flexible hydrogel. In order to solve the problems that an existing flexible wood-based hydrogel process is low in efficiency, the microstructure is difficult to regulate and control and the performance is unbalanced, the invention provides a preparation method of a flexible hydrogel based on a cellulose framework, which comprises the following steps: delignifying natural wood chips to obtain delignified wood chips, and then carrying out alkali treatment under a time gradient to obtain the cellulose framework; the preparation method comprises the following steps: immersing the cellulose framework in a PAM precursor solution prepared from an acrylamide monomer, a cross-linking agent and an initiator in vacuum, and finally performing in-situ polymerization under ultraviolet light to obtain the flexible hydrogel based on the cellulose framework. Precise regulation and control of a supramolecular structure of the cellulose framework are realized through alkali treatment time gradient optimization, and the prepared cellulose framework has toughness and strength; structural integrity and function synergy of the ionic conductive hydrogel are guaranteed through an in-situ polymerization technology, and the application prospect of the flexible hydrogel is widened.

The invention relates to the technical field of pulping production, in particular to a spherical digester device for pulping. Comprising a fixing frame, a spherical heat preservation shell is arranged in the fixing frame, a spherical cooking shell is concentrically fixed in the heat preservation shell, rotating shafts are fixed to the two ends of the cooking shell, the rotating shafts penetrate through the heat preservation shell and are rotationally connected with the fixing frame, and a driving unit for driving the rotating shafts to rotate is arranged on the fixing frame. The cooking shell and the heat preservation shell are driven by the motor to rotate integrally, and a multi-dimensional mixed flow field is formed under the action of centrifugal force and gravity in combination with the baffle structures uniformly distributed on the inner circumference. The wood chips and the alkali liquor are repeatedly cut and dispersed by the baffles in the rolling process, the static accumulation and layering phenomena are broken, uniform permeation of fibers and the reaction liquor is achieved, and the cooking reaction time is greatly shortened.

Device for transporting the wood chips produced by a chipper (1) and exiting its outlet opening (2) by means of a screw conveyor (8) which runs in a conveying tunnel (3) along the conveying direction (4), wherein one end (6) of the conveying tunnel (3) is open for the discharge of the wood chips, characterized in that the screw conveyor (8) is enclosed on all sides by the conveying tunnel (3), wherein one end (5) of the closed conveying tunnel (3) is connected to the outlet opening (2) via a connecting element in a flow-tight manner.

The invention relates to a method and an apparatus for the process-optimized production of manufactured wood boards, in particular oriented strand boards. In order to provide a method and an apparatus for the process-optimized production of manufactured wood products which make it possible to optimize quality while providing continuous quality assurance, which allow the best possible control variables to be determined particularly easily and quickly, and which also guarantee continuous production that results in the lowest possible wastage while maintaining the highest possible level of process stability, the invention provides the following: at least one process parameter, in particular the water content and / or the quantity of adhesive applied to the raw chip material, is measured in the course of the method by means of near-infrared spectroscopy; the measured values of the at least one process parameter are then sent to a control unit for process optimization and / or process-optimized control of the method, wherein the measurement of the at least one process parameter is taken at one or more positions, selected from: a position immediately upstream of the gluing, in particular between a dry raw chip hopper and the gluing station; a position immediately downstream of the gluing, in particular between the gluing station and a chip material distributor and / or a dispersing station; a position in the provision phase immediately downstream of a timber yard, in particular between the timber yard and a subsequent dryer; and / or a position in the provision phase immediately downstream of a dryer, in particular between the dryer and a sieving station and / or a dry raw chip hopper.

The utility model belongs to the technical field of candle supports, and particularly relates to a wood chip wick candle support convenient to carry, which comprises a base, the inner wall of the base is fixedly connected with a first bearing, the inner ring of the first bearing is fixedly connected with a worm, the bottom of the worm is fixedly connected with a rotating block, and the rotating block is fixedly connected with a rotating shaft. A first U-shaped plate is fixedly connected to the upper surface of the base, and first cylinders are fixedly connected to the front side and the rear side of the inner wall of the first U-shaped plate correspondingly. According to the wood chip wick candle support convenient to carry, through cooperation of the base, the first bearing, the worm, the rotating block, a first U-shaped plate, a first cylinder, a first cylinder, a worm gear, a folding support, a second cylinder, a second cylinder, a second U-shaped plate and a candle fixing base, a user can rotate the rotating block, and the height of the candle support can be changed; and by changing the height of the candle bracket, the candle bracket is more convenient to carry.

The application discloses an environment-friendly anti-deformation reed-wood composite shaving board and a preparation method thereof, belongs to the technical field of the board material, and the raw material of the reed-wood composite shaving board comprises wood chips, reed fibers, basalt fibers, lignin fibers, plant extracts, nano silicon dioxide, acetylated di-starch phosphate, C30-45 alkyl cetyl stearyl dimethicone cross-linked polymer, PEG-10 polydimethylsiloxane-vinyl dimethicone cross-linked polymer, methyl methacrylate cross-linked polymer, MDI adhesive and organic silicon waterproof agent in specific proportions. The components are used in cooperation, the shaving board is prepared in a directional mode, has excellent mechanical properties, is resistant to cracking and deformation, and is improved in the environmental protection performance, and the usage amount of glue is reduced. The novel formaldehyde-free adhesive and the plant extracts are adopted to replace traditional formaldehyde-containing glue and mold-proof and insect-proof agents, formaldehyde release is effectively avoided, and a healthier home decoration board selection is provided for consumers.

The utility model discloses an automatic feed hopper for burning biomass and wood chips, which comprises a hopper, a feed port is arranged on one side of the top of the hopper, a crushing component is arranged in the hopper, a discharge plate is arranged at the bottom of the hopper, and a dispersing component is arranged in the discharge plate. A motor is turned on to drive a rotating shaft to rotate, so that a sleeve drives a cutting knife to rotate to smash wood chips, the rotating shaft rotates to drive a reciprocating lead screw to rotate, so that a sliding block drives a connecting rod to move up and down to do reciprocating motion, a mounting ring drives the sleeve to move up and down to do reciprocating motion, and the cutting knife can smash the wood chips more thoroughly; and secondly, gas is conveyed into the air conveying pipe by turning on the draught fan, airflow is sprayed out from the air outlet pipe, wood chips falling after smashing are dispersed, accumulation is prevented, the contact area of the wood chips and oxygen is increased, and biomass materials are more sufficiently burnt.

The utility model relates to the technical field of impurity separation, and discloses a wood chip impurity separation device which comprises a separation mechanism, a slag blowing mechanism and an angle adjusting mechanism, and the separation mechanism is located at the bottom of the slag blowing mechanism. The motor is started to drive the connecting rod to rotate, the rotating wheel is fixed to the outer wall of the connecting rod and drives the first rotating wheel to rotate through the belt, meanwhile, the first rotating wheel is fixed to the fixing rod, the eccentric block is fixed to the outer wall of the fixing rod, and when the eccentric block rotates, the fixing rod drives the screen to vibrate; the fixing columns are fixed to the bottom of the screen, the outer walls of the fixing columns make contact with the springs, the fixing columns and the first fixing columns limit the springs, so that the screen vibrates, wood chips on the surface are separated from impurities, meanwhile, wood can move forwards, it is guaranteed that the wood cannot be stacked on the screen, and continuous automatic production can be achieved; the requirement of manual operation is reduced, and the automation and the efficiency of production are further improved.

The utility model discloses a medium density fiberboard processing wood chip screening machine which comprises a base, the base is connected with a screening assembly used for screening raw materials for medium density fiberboard processing wood chips, and the screening assembly comprises a screening piece which is installed on the base and used for screening out impurities in raw material mixtures, the screening part comprises a rotating cylinder rotationally connected to the right end of the upper side of the base, a filtering cylinder used for filtering impurities is installed on the left side of the rotating cylinder, and a recycling box used for receiving the impurities is placed on the portion, corresponding to the lower side of the filtering cylinder, of the upper side of the base. According to the wood chip screening machine for medium-density fiberboard processing, the air cylinder assembly is matched with the push plate, materials retained in the rotating cylinder and the filter cylinder are guided out, the material recovery rate is increased, and the water pump, the three-way valve, the corrugated pipe, the water spraying ring, the branch pipe and the water spraying strip are matched with one another, so that the inner wall and the outer surface of the filter cylinder are cleaned.

A membrane device includes a vacuum device main body having a plurality of vacuum holes such that a real wood sheet to be temporarily attached to a core is mounted in the vacuum device main body, a cover having a silicone film to define a vacuum space together with the vacuum device main body, a vacuum module to suck air in the vacuum device main body through the vacuum holes, and a control unit to compress the real wood sheet and the core for a preset time by sucking air in the vacuum space through the vacuum holes. The control unit removes the vacuum from the vacuum space by controlling the vacuum module so that the compressed real wood sheet is detached, and the vacuum device main body includes sliders to perform wrapping the real wood sheet around the inside of the core while moving upward.

The utility model provides a wood chip pre-evaporation tank which comprises a pre-evaporation tank body, a feeding screw rod, a lifting plate, a feeding motor and a wooden plug screw, the lower portion of the pre-evaporation tank body is connected with the wooden plug screw, the feeding screw rod is installed in the middle of the pre-evaporation tank body, the upper portion of the feeding screw rod is connected with the feeding motor, and the lower portion of the feeding screw rod is connected with the wooden plug screw. The lower part of the feeding screw rod extends to the upper part of the spiral joint of the pre-evaporation tank body and the wooden plug; a plurality of guide rods are arranged at the top of the pre-evaporation tank body, the guide rods are parallel to the feeding screw rod, the lifting plate is mounted on the guide rods in a sliding manner, and the feeding motor is mounted at the upper part of the lifting plate. The feeding motor is installed on the lifting plate, the feeding screw can move up and down through the telescopic rod during feeding, the feeding screw can move downwards to make contact with wood chips and push the wood chips to be discharged during material shortage, feeding pushing force can be generated through the spiral plate and the telescopic rod at the same time during feeding, and the material pushing effect is improved; and the problem of material blocking caused by wood chip bridging is avoided.

This utility model relates to the field of papermaking technology and discloses a wood chip hydrolysis pulping device, including a mixing mechanism, an auxiliary mechanism on the left side of the mixing mechanism, and a crushing mechanism at the bottom of the auxiliary mechanism. The mixing mechanism includes a heating tank with an inlet pipe connected internally, and support feet fixedly connected to the outer wall of the heating tank. This utility model supports the heating tank with the support feet. Wood chips enter from the top of the heating tank, and the inlet pipe injects hydrolysate into the heating tank. A support plate supports a motor, which drives a rotating rod to rotate. The rotating rod drives a crushing rod to further crush the wood chips, while a stirring plate ensures thorough mixing of the wood chips and hydrolysate. The crushing rod reduces the volume of the wood chips, allowing for rapid absorption of the chemical in the central area of ​​the wood chips, improving hydrolysis uniformity. The stirring plate enhances the mixing effect between the wood chips and hydrolysate. Combined with precise temperature control in the heating tank, this shortens the reaction time and improves production efficiency.

The application discloses a method for improving the alkali impregnation yield of fiber raw materials, wherein after qualified wood chips are obtained by screening the fiber raw materials, at least one dry heat treatment is performed on the washed and dehydrated fiber raw materials before alkali impregnation, the treatment temperature is 105 DEG C to 130 DEG C, and the total treatment time is 10 min to 60 min. According to the method, under the condition of not being chemically modified, only by using relatively mild heat treatment, the precursor small molecules originally in the cell cavity are connected with the main structure of the fiber raw materials by free radical condensation as much as possible, so that the alkali impregnation yield of pulping of the chemical mechanical pulp is improved, the subsequent paper pulp performance is ensured, the pulping cost is saved, and the emission of pollutants is reduced.

The present invention relates to a novel method of impregnating wood, as well as wood chips to be subsequently used for wine aging. The wood chips are impregnated with a liquid food product or a dry residue of the liquid food product.

The invention discloses a low-temperature synergistic oxidation pretreatment process and application of wood chips for spirit aging and retaining fruit tree characteristic flavor. The method comprises the steps of (1) wood chip preparation, (2) ozone oxidation treatment, (3) ultrasonic-assisted tea polyphenol dipping treatment, (4) infrared gradient drying treatment and (5) natural airing. The process is easy to operate and low in energy consumption, and the application value of the wood chips in ageing of spirits such as whisky and Chinese liquor is remarkably improved.

A wood chip sampling machine comprises a three-axis driving system, a sampling head is fixedly connected to the lifting end of a lifting driving mechanism of the three-axis driving system and comprises a sampling motor, a speed reducer is connected to an output shaft of the sampling motor, and the output of the speed reducer is fixedly connected to the center of a sun gear of a planetary gear reduction gearbox. A gear ring of the planetary reduction gearbox is connected with a drill cylinder connecting sleeve, a drill cylinder is fixedly connected to the drill cylinder connecting sleeve, a drill rod connecting sleeve is fixedly connected to the center of the sun gear, a drill rod is fixedly connected to the drill rod connecting sleeve and located in the drill cylinder, the upper portion of the drill cylinder is a small cylinder part, and the lower end of the small cylinder part is fixedly connected with a conical part. The lower end of the conical part is fixedly connected with a large barrel part, the lower end of the drill rod is fixedly connected with a spiral blade, the lower end in the small barrel part is fixedly connected with a flange separation blade, the spiral blade on the drill rod is located in a space below the small barrel part, and a plurality of discharge ports are formed in the circumferential surface of the conical part. The wood chip sampling machine can replace manual work to complete wood chip sampling operation.

This invention discloses a method and device for optimizing and controlling the hydrothermal environment of green roofs based on modified matrix synergy, belonging to the field of green building technology. The method involves acquiring meteorological parameters and roof structure requirements of the target area to determine the hydrothermal control objectives, and customizing a modified matrix formula composed of garden soil, gravel, and wood chip biochar, pretreated for porosity optimization. A layered structure is constructed, and sensors collect data such as matrix moisture content, roof temperature, and rainfall intensity in real time. Based on a coupling algorithm, the porosity and height of the water storage and drainage layer are dynamically adjusted to achieve hydrothermal control through the synergistic effect of the modified matrix's water retention and thermal insulation properties and vegetation evapotranspiration. The control effect is periodically evaluated, and the matrix ratio and water storage and drainage layer parameters are iteratively updated. The device employs an intelligent modular adjustable ventilated water storage and drainage layer, with built-in sensors and a drive motor, and a distributed data acquisition and control module to achieve intelligent control. This invention solves the problems of poor adaptability and weak hydrothermal control capabilities of traditional green roofs.

The utility model provides a spliced wood board adopting outwards-turned sharp-angled barbs for insertion, a group of outwards-turned sharp-angled barbs formed by obliquely cutting a section of notch from the edge of a body are uniformly distributed on the butt joint end face of a unit wood chip at intervals, and the shape of the notch is matched with that of the outwards-turned sharp-angled barbs; the shapes and the distribution positions of the outwards-turned sharp-corner barbs on the butt joint end faces of every two adjacent unit wood chips are the same, but the directions of sharp corners of the outwards-turned sharp-corner barbs on the butt joint end faces of every two adjacent unit wood chips are opposite, and during splicing, the outwards-turned sharp-corner barbs of every two adjacent unit wood chips are obliquely inserted into the notches of the corresponding outwards-turned sharp-corner barbs of the opposite unit wood chips. The other butt-joint end faces of every two adjacent unit wood chips are attached together, and all the butt-joint end faces of every two adjacent unit wood chips are connected in a bonding mode through adhesives. According to the spliced wood board, when the outwards-turned sharp corner barbs on the butt joint end faces of the unit wood chips are machined, no material needs to be removed, wood loss cannot be caused, the total length of the spliced wood board is consistent with the accumulated length of the unit wood chips, and wood resources can be effectively saved.

The application discloses dyed anti-fake fiber and a preparation method and application thereof, and belongs to the papermaking technical field.The technical scheme is as follows: the preparation method of the dyed anti-fake fiber comprises pulping, screening of pulp, dyeing, washing and airing, and the pulping process comprises wood chip washing, pre-soaking, reaction bin, high-concentration grinding, medium-concentration bleaching, high-concentration bleaching, latent elimination, low-concentration grinding, pressure screen, multi-disc, vacuum pulp washing and pulp storage, and specifically comprises the following steps: 1) screening of pulp; 2) preparation of anti-fake dye solution; 3) dyeing; 4) washing; 5) airing, to obtain anti-fake fiber for papermaking; and application of the anti-fake fiber in original paper manufacturing.The wood pulp fiber is used to replace polyurethane high molecular material fiber, manufacturing and production costs are greatly reduced, the functional original paper with general anti-fake quality demand can be met, and the functional original paper with not very high anti-fake quality demand has high practical value.

The utility model relates to fuel feeding technology field especially relates to a wood chip fuel precision feeding device, including feed inlet, the first motor is provided with in feed inlet front end, the shell is fixedly connected with feed inlet lower extreme, the first motor output is fixedly connected with first linkage wheel, the linkage axle is rotatably connected with shell front end, the threaded push -on rod is fixedly connected with linkage axle rear end, the discharge gate is fixedly connected with shell lower extreme rear side, the second motor is fixedly connected with discharge gate front end, the runner is fixedly connected with second motor output, the fixed ring is fixedly connected with shell inside, the linkage lever is rotatably connected with fixed ring inside, the driving gear is fixedly connected with linkage lever upper end outside, through the cooperation design of second motor and driving gear, makes the transition cavity to form in discharge gate when the sector baffle rotates, avoids the direct contact of discharge gate and combustion chamber, prevents the direct contact of high temperature flue gas with the wood chip in threaded push -on rod through feed inlet.

The utility model discloses a greenbelt boundary separation structural body device, which comprises a blocking body module, a fixing module and a supporting module, the blocking body module is arranged at the upper part of the fixing module, the supporting module is arranged at the lower part of the fixing module, the fixing module comprises a fixing plate and a width adjusting rod, and the width adjusting rod is arranged on the fixing plate. The bottoms of the two fixing plates are connected through a width adjusting rod, the blocking body module comprises baffles and height adjusting plates, the baffles are arranged at the upper ends of the fixing plates respectively, and the height adjusting plates are arranged at the upper ends of the baffles. The large-particle-size wood chips and the small-particle-size crushed plants are used in a combined mode, so that the plant fence has the advantages of being high in air permeability and water permeability, and the plant fence is installed on the boundary of a green land, plays a role in dividing plant areas and can solve the problems that drainage is not smooth and accumulated water is difficult to drain in a fence area. The device is installed on the edge of a greenbelt with large gradient and obvious surface runoff scouring, and can also play a certain role in filtering rainwater.

An improved oriented strand board (OSB) panel or board with higher resin loading and control of the density to provide improved and / or enhanced properties, and methods of manufacturing such an improved OSB panel or board. In several exemplary embodiments, as described in greater detail below, resin loading of the strands used for OSB formation is increased in conjunction with the density of the manufactured OSB board being controlled to a certain density or within certain density ranges for use with decorative panels, exterior cladding or siding panels, engineered wood flooring, and / or exterior structural wall or roofing panels. Both increased resin-loading and controlled density increases are required for overall core performance increases, and the surprisingly enhanced performance characteristics outweigh the increased cost of production.

The invention relates to a wood structure steel angle brace node structure which comprises a wood column, a wood frame and an inclined steel angle brace, the wood column and the wood frame are arranged in an orthogonal mode, the inclined steel angle brace comprises a round steel pipe, two connecting plates, two double-lug plates, two connecting units and a plurality of screws, the two connecting plates are fixedly installed on the wood column and the wood frame through the inclined screws respectively, and the two connecting plates are fixedly installed on the round steel pipe through the double-lug plates. The two double-lug plates are fixed to the two connecting plates respectively, the double-lug plates, the connecting plates and the connecting units are in one-to-one correspondence, and the two ends of the round steel pipe are fixedly connected with the double-lug plates through the connecting units respectively. According to the wood structure steel angle brace node structure, the parallel wood chip laminated wood is adopted, and the inclined steel angle brace is matched, so that the wood structure node can transmit bending moment, the wood structure node is not a single hinged node any more, the rigidity of the connecting position is increased, and the rigidity of the whole structure is also improved. Meanwhile, the steel angle braces are connected with the wooden columns and the wooden frames through steel plates and 45-degree oblique long screws so as to meet the stress performance.

The utility model discloses a forming device for a wood chip basket, and relates to the technical field of wood chip basket forming. The mold comprises a supporting bottom plate part, a positioning rod part fixedly arranged in the center of the upper end of the supporting bottom plate part and a forming module arranged above the positioning rod part, and further comprises a downward pressing ring part arranged over the forming module, the upper portion of the downward pressing ring part is connected with an assembling sleeve rod, and the top of the assembling sleeve rod is connected with a pushing top plate; and the embedded groove is formed in the bottom of the lower pressing ring part, a basket sleeve ring is inserted into the embedded groove, a pushing connecting rod is fixedly arranged at the top of the pushing top plate, and a module screw hole is fixedly formed in the top of the supporting bottom plate part. According to the wood chip forming device, the woven wood chips are placed on the forming module, the downward pressing ring part of the annular structure is driven by the electric push rod to conduct downward pressing action, the downward pressing ring part can automatically press the woven wood chips out of the forming module to form the appearance of a wood chip basket, manual downward pressing is replaced, and the wood chip forming device is safer and more efficient.

The application discloses a kind of high thickness of high bulk pulp and its preparation process, belong to papermaking technical field.The technical scheme is as follows: including the following steps, raw material preparation and pre-soaking treatment, reaction bin reaction, high consistency refining treatment, bleaching, latent elimination, low consistency refining, screening and washing, 1) raw material preparation and pre-soaking treatment: the raw material wood chip is broken, then pre-soaking is carried out, control pre-soaking temperature 80~90 ℃, pH value 9.8~10.2, liquid level ≥50%, ADI back pressure ≥4bar, NaOH dosage is 1.5%~2.0% of dry wood chip weight;2) high consistency refining treatment: the wood chip after pre-soaking is sent into high consistency refiner for refining, refining consistency 35~45%;3) bleaching: pulp after refining is sequentially subjected to one-stage bleaching and two-stage bleaching.The application process has high stability, and can realize the synchronous and stable improvement of bulk and freeness.