137 results about "Hemp fiber" patented technology

The invention discloses a ground directional drilling goaf passing leaking stoppage method which comprises the steps that hole data of a goaf are obtained, and the hole data comprise the hole depth and the crack width; when the width of the crack is larger than 5 mm, a foundation plugging material is adopted for conducting foundation plugging on the hole of the goaf, and the foundation plugging material is an inert material and cement paste; judging whether basic plugging fails or not to obtain a first judgment result; if the first judgment result shows that the basic plugging fails, a flexible plugging material is adopted for conducting medium-term plugging on the holes in the goaf, and the flexible plugging material is a material formed by mixing hemp fiber, sawdust, soybeans and water. According to foundation plugging, a large channel is filled through particle bridging, a primary plugging layer is formed after cement paste is solidified, the flexible material can adapt to trace deformation of surrounding rock through deformation filling, and micro cracks of a foundation layer are plugged. Through graded gradient filling, the leaking stoppage effect can be greatly improved.

The present application relates to the technical field of degradable packaging. Particularly disclosed are a degradable food container and a preparation method therefor. The degradable food container comprises a paper food container base body and a degradable coating applied on the paper food container base body, wherein the degradable coating is prepared from the following raw materials in parts by weight: 40-50 parts of polylactic acid; 10-15 parts of polybutylene succinate; 15-20 parts of polyglycolic acid; 10-20 parts of cassava starch; 5-8 parts of an external additive; 1.2-1.8 parts of montmorillonite; 0.2-0.8 parts of boron nitride nanotubes; and 1.5-2.5 parts of modified hemp fibers. The preparation method therefor comprises: heating polylactic acid, polybutylene succinate and polyglycolic acid to a molten state, then adding cassava starch and an external additive thereto, finally adding montmorillonite, boron nitride nanotubes and modified hemp fibers thereto, performing extrusion granulation, melting and then coating same on the surface of the paper food container base body, cooling same, and then cutting and forming same into a container to obtain the degradable food container. The degradable food container of the present application can exhibit excellent temperature change resistance when being subjected to temperature change caused by an external environment.

The utility model provides a pair of full-hemp surface layer menstrual period trousers, which comprises a full-hemp surface layer menstrual period trousers body which is in the shape of underpants formed by cutting and compounding non-woven fabrics and rubber bands. The full-China-hemp surface layer menstrual period pants body sequentially comprises a surface layer, a flow guide layer, an absorber, an anti-leakage bottom film and an elastic surrounding body from the skin contact surface to the bottom, and the surface layer is made of full-China-hemp non-woven fabric. The surface layer is the non-woven fabric made of all China-hemp fibers, the China-hemp fibers belong to natural plant fibers and can destroy the thallus structure of bacteria and prevent anaerobic bacteria from surviving, the China-hemp fibers have moisture absorption and quick drying functions, a dry environment is not beneficial to bacterial reproduction, menstrual blood is quickly pulled to the bottom through the multi-layer tiled structure in the absorber, and therefore the menstrual blood can be quickly absorbed. The China hemp fibers can effectively inhibit bacterium breeding and prevent bacteria from breeding upwards, skin or gynecological diseases caused by contact with skin are avoided, and the use requirement of women for menstrual period trousers is met.

An aerosol-generating article (10)(100)(1000) comprises: an aerosol-generating substrate (12)(112)(1004); a downstream element (42)(150)(1008) provided downstream of the aerosol-generating substrate (12)(112)(1004) and in axial alignment with the aerosol-generating substrate, the downstream element comprising a cellulosic filtration material. The fibrous material comprises a plurality of regenerated cellulose fibres selected from one or more of viscose fibres, modal fibres, Lyocell fibres and viscose rayon fibres; or a plurality of natural fibres selected from one or more of flax fibres, hemp fibres, jute fibres, kenaf fibres, ramie fibres, abaca fibres, phormium fibres, sisal fibres, coir fibres, cotton fibres, and kapok fibres. The cellulosic fibrous material further comprises an additive coating applied to the plurality of regenerated cellulose or natural fibres, the additive coating comprising at least 5 percent by weight of exogenous lignin on a dry weight basis.

The application relates to the technical field of layered fabrics, and discloses a moisture-conducting layered composite fabric based on multi-element blended yarn and a preparation method thereof. By constructing a gradient moisture-conducting layered structure with a moisture-conducting inner layer and a moisture-absorbing outer layer, the moisture-absorbing and moisture-conducting performance of the layered fabric is optimized; the multi-element blended yarn of moisture-absorbing and sweat-releasing polyester staple fiber, cotton fiber and hemp fiber and modified pure cotton yarn are used in the inner layer to realize moisture absorption and moisture conduction through wicking effect; the outer layer is made of pure cotton fabric which can quickly absorb the moisture conducted by the inner layer and evaporate to the environment, forming a moisture-conducting path. The prepared layered composite fabric not only has excellent moisture-absorbing and moisture-conducting performance, but also has improved washing resistance and antibacterial durability.

A wool-based insulation material is disclosed, wherein the majority fiber component is wool, making up over 50% of the total composition. The wool is blended with a proprietary fire-retardant adhesive and a minority component of green fibers (less than 50%), which includes natural fibers such as hemp fibers, soy fibers, and banana fibers. These plant-based fibers contribute to the insulation's sustainability and structural properties. The blend specifically excludes impurities such as hemp hurd, wood chips, and stalk materials. This insulation material combines excellent fire resistance, thermal insulation, and environmental sustainability, with wool serving as the critical component.

The aerosol generating article (10)(100)(1000) comprises an aerosol generating substrate (12)(112)(1004) and a downstream element (42)(150)(1008) provided downstream of the aerosol generating substrate (12)(112)(1004) and axially aligned with the aerosol generating substrate, the downstream element comprising a cellulosic filtration material. The fibrous material comprises a plurality of regenerated cellulose fibers selected from one or more of viscose fibers, modal fibers, lyocell fibers, and viscose rayon fibers, or a plurality of natural fibers selected from one or more of flax fibers, hemp fibers, jute fibers, kenaf fibers, ramie fibers, abaca fibers, phormium fibers, sisal fibers, coir fibers, cotton fibers, and kapok fibers. The cellulosic fibrous material further comprises an additive coating applied to multiple regenerated cellulose or natural fibers, the additive coating containing at least 5% by weight of exogenous lignin on a dry weight basis.

This invention provides a natural recycled composite functional fabric, characterized in that: the composite functional fabric is composed of viscose fiber, hemp fiber, and bamboo fiber, woven using a double-weft structure, wherein the warp yarns are a blend of viscose / hemp fiber / bamboo fiber, and both the outer and inner wefts are viscose fiber; the composite functional fabric is modified by lignin / keratin composite. This natural recycled composite functional fabric, composed of viscose fiber, hemp fiber, and bamboo fiber, and woven using a double-weft structure, wherein the warp yarns are a blend of viscose / hemp fiber / bamboo fiber, and both the outer and inner wefts are viscose fiber, can be used as an anti-UV curtain fabric after finishing.

This document provides hemp fiber biocomposites and methods and materials for making and using hemp fiber biocomposites. For example, hemp fiber biocomposites that can be used as a hydroponic growth medium are provided. Methods for making hemp fiber biocomposites also are provided.

The invention discloses a needle-punched cotton felt containing plant functional fibers and a preparation method of the needle-punched cotton felt, and belongs to the technical field of non-woven materials. The needle-punched cotton felt is composed of jute fibers, polyester staple fibers, auxiliary agent type deodorization fibers and 4080 low-melting-point fibers according to specific mass percent. Wherein the jute fibers are subjected to pretreatment of chemical degumming and soft modification treatment; the assistant type deodorizing fiber is a fiber prepared by blending and spinning a composite deodorizing assistant and a modified polymer matrix; the composite deodorizing auxiliary agent comprises nano zinc oxide, a chitosan derivative and zeolite powder; the modified polymer matrix is a polymer matrix modified by a compatilizer. The needle-punched cotton felt disclosed by the invention has excellent flexibility, high mechanical strength and an efficient and lasting deodorization function.

The invention provides composite expansive soil containing microorganisms-sisal fibers. The composite expansive soil comprises the sisal fibers, expansive soil, a bacillus pasteurii solution and a cementing solution. Wherein the mass part ratio of the bacillus pasteurii liquid to the cementing liquid is 3: (2-6); the mass part of the sisal fiber is 0.4-1.0; the concentration of the cementing liquid is 1.0 to 3.0 mol / L; the cementing liquid comprises the following components in parts by mass: 1 part of urea and 1-6 parts of calcium chloride. The composite expansive soil provided by the invention is improved by adopting a means of combining a microbe induced carbonate precipitation technology and fiber reinforcement, and the advantage complementation of microbe mineralization and physical reinforcement can be realized. The invention further provides a preparation method of the composite expansive soil containing the microorganisms-sisal fibers.

This invention relates to a blending process for hemp fiber and sorona fiber, belonging to the technical field of blending and processing of natural fibers and bio-based elastic fibers. The blending process for hemp fiber and sorona fiber of this invention includes the following steps: raw material selection → pre-spinning process → post-spinning process → packaging. This invention solves the problems of poor spinnability, high breakage rate, and stiffness and wrinkling in pure wet-spun hemp through specific proportions and wet spinning processes, achieving high-count, stable, and high-quality production. This significantly improves spinnability, enhances yarn quality, and greatly improves hand feel and comfort, achieving high elasticity and comfort to meet user needs.

The utility model discloses an anti-wrinkle shape-keeping high-proportion China-hemp woven fabric, a fabric body is formed by interweaving warp yarns with a high China-hemp proportion and weft yarns with a high China-hemp proportion, the warp yarns are China-hemp polyester staple fiber blended yarns, the weft yarns are China-hemp-wrapped T400 polyester filament yarn core-spun yarns, the weft yarns comprise core yarns and outer layers wrapped on the outer sides of the core yarns, and the outer layers are formed by interweaving warp yarns with a high China-hemp proportion and weft yarns with a high China-hemp proportion. The outer layer is composed of pure China hemp fibers, and the core yarn is T400 polyester filament double-strand doubling and twisting yarn. The high-proportion China-hemp casual fabric is resistant to wrinkles and stable in quality, the cloth texture, the hand feeling and the capillary effect of the high-proportion China-hemp casual fabric are close to the natural casual style of a 100% all-hemp fabric, moisture absorption and quick drying are achieved, the breathable and comfortable performance is good, and the high-proportion China-hemp casual fabric has the stable elasticity and the stable size and shape maintaining performance. In addition, compared with a fabric interwoven by hemp and chemical fiber filaments in the market, the color and appearance of the fabric are washable, new-keeping and shape-keeping properties are obviously improved, the snagging problem can be completely avoided, and the hand feeling style of the fabric is closer to the whole hemp texture and has no chemical fiber feeling.

The invention relates to the technical field of paper-plastic composite woven bags, and particularly discloses a degradable anti-aging paper-plastic composite woven bag and a manufacturing method thereof. The degradable anti-aging paper-plastic composite woven bag comprises a paper bag layer and a plastic woven layer, the plastic woven layer and the paper bag layer are compounded and bonded through low-density polyethylene; the plastic woven layer comprises polylactic acid, bamboo fibers, linen fibers, polycaprolactone, nano-zinc oxide, polyglycerol fatty acid ester and an antioxidant. The radial tensile load retention rate and the weft tensile load retention rate of the obtained paper-plastic composite woven bag are 91-97% and 92-97% respectively, the paper-plastic composite woven bag has high aging resistance, the radial tensile load and the weft tensile load are 943-952 N / 50 mm and 883-900 N / 50 mm respectively, the decomposition rates of the paper-plastic composite woven bag can reach 20.5%, 50.3% and 99.4% respectively after 180 days, one year and two years under the soil condition, and the paper-plastic composite woven bag has high mechanical property and degradability.

The utility model belongs to the technical field of transport packaging, and particularly relates to a fresh food frame. The fresh food frame comprises a frame body and a bottom pad. The frame body comprises a bottom plate and a side peripheral plate arranged around the bottom plate by a circle, and the bottom plate and the side peripheral plate define a containing groove with an opening in the top. The bottom pad is arranged in the containing groove and connected with the bottom plate. The bottom pad at least comprises an antibacterial layer, and the antibacterial layer is made of fibrilia composite materials and can cover the bottom of the containing groove. According to the embodiment of the invention, the antibacterial layer is made of the fibrilia composite material, so that the bottom pad has the characteristics of good antibacterial property, bearing property, buffering property, renewable recycling property and the like, the shelf life of goods such as fresh goods can be prolonged, the durability of the bottom pad is improved, and the service life of the bottom pad is prolonged. And the requirement of green transformation in the fresh cold-chain packaging industry can be met.

The invention relates to a temperature-sensitive-pH dual-response environment-friendly color fixing agent for hemp as well as a preparation method and application of the color fixing agent. The color fixing agent is prepared from the following raw materials: chitosan, N-isopropylacrylamide, a sodium hydroxide solution, ammonium persulfate, 2, 3-epoxypropyltrimethylammonium chloride, sodium chloroacetate, a dispersing agent and pure water. Chitosan is used as a base material, carboxymethyl, N-isopropylacrylamide chain segments and cationic quaternary ammonium salt groups are sequentially introduced through graft polymerization and chemical modification, a dispersing agent is compounded, and the color fixing agent is prepared and has the temperature and pH dual response characteristics, specifically, when the temperature is higher than the low critical solution temperature, the temperature-sensitive chain segments shrink, and dye is physically coated; under the acidic condition, the cationic group and the anionic dye generate electrostatic adsorption, the two mechanisms have a synergistic effect, the color fixing agent is applied to bast fiber to remarkably improve the color fixing effect, the raw materials of the color fixing agent are environment-friendly, and the preparation process is simple.

This patent discloses a preparation process for a biomass-based cross-corrugated lattice sandwich structure, relating to the field of building materials. The preparation process of the biomass-based cross-corrugated lattice sandwich structure is as follows: raw materials—bamboo / jute fibers—are cut neatly, washed, and dried; the raw materials are layered sequentially and set aside; epoxy resin and curing agent are mixed in a specific ratio, thoroughly stirred, and then used to impregnate the raw materials; the mixture is placed in a corrugated mold and hot-pressed to form a corrugated structure; a slotted interlocking design is applied to the corrugated structure to prepare a cross-corrugated structure; plywood is used as the face panel, and the cross-corrugated structure is used as the core layer, connected by adhesives to prepare the biomass-based cross-corrugated lattice sandwich structure. This patent applies agricultural and forestry biomass materials to the preparation of lattice structures, meeting both structural load-bearing requirements and national requirements for developing environmentally friendly materials. It is of great significance for developing lightweight, high-strength biomass-based engineering materials and providing added value to agricultural and forestry biomass.

The application provides a preparation method of high-elasticity anti-ultraviolet short fiber filament composite yarn, and solves the problems of single function, insufficient elasticity and poor anti-ultraviolet durability of traditional yarns through differential pretreatment, segmented cotton mixing, variable twist roving, double-elasticity system sirofil composite spinning and far-infrared synergistic heat setting innovative process. The method uses seaweed fiber and hemp fiber as raw materials, softens hemp through mechanical rubbing and twisting, alkali boiling and swelling, improves seaweed fiber through low-temperature plasma etching and gradient drying, combines double-elasticity filament bundle and a dynamic tension compensation device, and finally prepares yarn with an elasticity recovery rate of greater than or equal to 90%, an UPF of greater than or equal to 55, and the functions of moisture absorption, antibiosis and far-infrared radiation. The production efficiency is improved by 50%, the energy consumption is reduced by 30%, and the method is suitable for summer clothes and sports clothing fields and has remarkable economic and social benefits.

The application discloses a ramie fiber diaphragm based on fiber crystalline domain entropy regulation and a preparation method and application thereof, and belongs to the technical field of preparation of cellulose diaphragms for capacitors. The preparation method comprises the following steps: pretreating ramie raw materials by soaking, cooking and cutting to obtain ramie sections, then performing low-temperature beating to maintain high crystallinity of the fibers and realize refinement, forming a suspension slurry, then performing ultrasonic dispersion, screening and dissociation dispersion to obtain uniform fine slurry, and finally performing wet laying molding and freeze drying to obtain the ramie fiber diaphragm which has a three-dimensional interconnected porous structure and high tough mechanical properties. The application fully utilizes the alkaloid characteristics of the ramie fiber to realize alkali-free cooking, and the process is environmentally friendly. Through the synergistic effect of low-temperature beating and freeze drying, the fiber intrinsic toughness is maintained while the multi-stage ion transmission channel is constructed. The obtained diaphragm has excellent air permeability, porosity and mechanical strength.

This utility model discloses a linen-like fabric, relating to the field of fabric technology. The key technical points are: it includes a base layer, with several staggered protrusions (first and second) fixedly connected to both sides of the base layer; several square-shaped ventilation grooves are formed on the base layer, with the ventilation grooves and protrusions (second) positioned relative to each other and their diagonals running along the length of the protrusions (second); ventilation holes are provided around each ventilation groove; a contact strip covering the protrusions (first) is fixedly connected to the side of the base layer away from the protrusions (second); the contact strip is lifted by the protrusions (first) to form a ventilation channel with the base layer; the weave density of the contact strip is less than that of the base layer; and linen fibers are incorporated into this utility model, which have excellent moisture absorption and dissipation properties, increasing the fabric's absorption rate of sweat and accelerating the evaporation of moisture from the fabric.

The utility model discloses a long fibrilia degumming system. The long fibrilia degumming system comprises a conveying device, a spraying device and a liquid storage device, the conveying device is configured to convey the long fibrilia; the spraying device comprises spraying mechanisms, the spraying mechanisms are sequentially arranged at intervals in the conveying direction of the conveying device, every two adjacent spraying mechanisms are communicated with each other, the long fibrilia can be continuously conveyed between the arranged spraying mechanisms, each spraying mechanism comprises a spraying head, and the spraying heads are configured to spray liquid for degumming or spray gas; the liquid storage device is connected with the spraying device and is used for storing the sprayed liquid for degumming. According to the continuous degumming device for the long jute fibers, every two adjacent spraying mechanisms are communicated with each other, the long jute fibers can be continuously conveyed and sequentially pass through the multiple spraying mechanisms, and the long jute fibers are continuously and sequentially degummed layer by layer through liquid or gas for degumming and are air-dried and scattered, so that the long jute fibers can be continuously produced, and the production efficiency of the long jute fibers is improved.

The utility model discloses a kind of hemp fiber blended anti-crease yarn softening treatment devices, including shell, the inside of shell is equipped with workbench, the middle part of workbench is installed with soaking groove, symmetrically distributed pressure roller is rotatably connected between the front and rear inner wall of soaking groove, the right side wall of shell is equipped with outlet, further including pretreatment mechanism;Pretreatment mechanism: it includes main shaft, collar, arc plate, installation groove, copper column, sliding block and silica gel strip, the inside left end of shell is rotatably connected with main shaft, the outer arc surface of main shaft is equipped with evenly distributed collar, the opposite inner side outer arc surface of two front and rear adjacent collars is equipped with arc plate, this hemp fiber blended anti-crease yarn softening treatment device, local heating pretreatment realizes hemp fiber softening and gap puffing to promote softening agent penetration efficiency while adjustable structure adaptation different diameter yarn with the linkage of sliding block and collar, L-shaped rod guidance, solve the uneven heating and the deficiency of weak equipment adaptability.

The application relates to the field of interior plate processing, and discloses a composite hemp fiber door interior plate film pressing forming device and process, which comprises a machine table for supporting the overall device, the upper surface of the machine table is provided with a supporting rod, the top end of the supporting rod is provided with a top plate, the outer wall of the supporting rod is slidably connected with a moving table, the inner wall of the machine table is provided with a hydraulic cylinder, the top end of the output shaft of the hydraulic cylinder is fixedly connected to the lower surface of the moving table, the upper surface of the moving table is provided with a lower die, the lower surface of the top plate is provided with an upper die mechanism, the outer wall of the machine table is provided with a supporting frame, and the upper surface of the supporting frame is provided with a control assembly. Through the setting of the near-infrared moisture meter, the moisture of the product can be detected by the near-infrared moisture meter after the hot pressing step is completed; when the moisture exceeds the threshold value, the control element sends a signal to control the air blowing pump and the air suction pump to work, so that air can be guided to enter from the air conveying pipe.

The invention provides a fine processing method of long fibrilia, which comprises the following steps: splitting raw fibrilia by a splitting machine, removing short fibrilia by a hackling machine, and reserving the long fibrilia with the length of more than or equal to 35mm; the combed fibers are straightened into strips, five fiber bundles are combined into one, and the uniformity of the fiber strips is enhanced; spinning the combined fiber strips into rough yarns by adopting a roving frame, and controlling the twist degree to be 20-30 twists per meter; placing the roving in a cooking pot, adding a degumming solution, and cooking for 2 hours; washing with a detergent for 30 minutes, and then washing with hot water until the pH is neutral; a softening agent is used, the bath ratio is 1: 10, and dipping is performed for 30 minutes at the temperature of 50 DEG C; drying the fibers until the moisture regain is 80%, spraying a linen softening agent, standing in a curing room at 40 DEG C for 48 hours, and controlling the final moisture regain to be 30%; and winding into a barrel through a winding machine, and packaging.

This utility model discloses a humidity control device for cold storage, including a base plate, a top plate above the base plate, support frames at the corners of the bottom of the top plate, two linkage seats above the top plate, a bearing plate fixed to the top of the two linkage seats, a dehumidifier body at the top of the bearing plate, a sealing door with hinges installed on one side of the outer wall of the dehumidifier body, two door handles on the outer wall of the sealing door, an air inlet at the lower end of the surface of the dehumidifier body, a humidity sensor installed on the surface of the dehumidifier body above the air inlet, a lower mesh plate at the center of the interior of the dehumidifier body, a hemp fiber moisture-absorbing layer installed on the top of the lower mesh plate, and a mesh plate inside the dehumidifier body above the hemp fiber moisture-absorbing layer. This utility model not only ensures the dehumidification control effect of the control device on the cold storage, but also improves the convenience of use and expands the humidity control range of the cold storage.

The utility model discloses a moisture-absorbing skin-friendly comfortable cotton-hemp-polyester knitted fabric which comprises a fabric body, the fabric body comprises a pure hemp antibacterial layer, a multi-hemp outer layer, a polyester stiff and smooth layer, a composite surface layer on the other side of the multi-hemp outer layer and a composite inner layer on the other side of the polyester stiff and smooth layer, the multi-hemp outer layer and the polyester stiff and smooth layer are arranged on the two sides of the pure hemp antibacterial layer; the composite surface layer and the composite inner layer are formed by blending cotton and hemp yarns and then blending the cotton and hemp yarns with polyester; the multi-hemp secondary outer layer is formed by blending hemp and polyester; the pure hemp antibacterial layer is made of hemp fibers loaded with antibacterial materials, and the polyester stiff and smooth layer is made of polyester. According to the utility model, the moisture-absorbing, antibacterial, comfortable and skin-friendly fabric is developed, the final fabric has the advantages of China-hemp, cotton and polyester, the obtained fiber fabric is moderate in hardness, smooth without wrinkles, good in light sensation, skin-friendly and breathable, and the natural organic material China-hemp is promoted to be widely used in textile products.

The invention discloses a composite yarn and a fabric made of the composite yarn. The composite yarn is composed of short fibers and filaments, the distribution oscillogram of the fiber lengths of the short fibers has a plurality of wave crests, the short fibers in the waveform close to the maximum fiber length are short fibers A, the short fibers in the waveform close to the minimum fiber length are short fibers B, and the difference between the average length of the short fibers A and the average length of the short fibers B is 10-64 mm; z twists and S twists are alternately distributed in the length direction of the filaments. The composite yarn with thick and thin appearance, dry and comfortable hand feeling and high strength, which is exactly similar to a hemp fiber product, can be obtained without equipment transformation, and fabrics made of the composite yarn can be widely used for making sportswear and casual wear.

This utility model discloses an antibacterial bamboo fiber spunlace fabric, including a spunlace fabric body and a structural layer. The absorbent layer of this utility model is made of sponge material, which increases the thickness of the spunlace fabric and has better water absorption, allowing it to retain more moisture. The mesh fabric can make the spunlace fabric body and the absorbent layer more firmly connected and make the spunlace fabric body less prone to tearing, thus improving the strength of the spunlace fabric body. The surface layer is made of interwoven bamboo fiber and hemp fiber, giving the surface a rough surface. The first fiber pad is made of polyester fiber yarn, which has high durability. The second fiber pad is made of cotton fiber, which has good water absorption and can also have a better cleaning effect on stubborn stains. The second cleaning layer is tightly arranged, and the finished product feels close to textiles, making the surface of the second cleaning layer softer, giving the spunlace fabric body a soft cleaning surface.

This utility model relates to a hemp feeding mechanism for a hemp combing machine, belonging to the field of hemp yarn processing. It includes a carrying body; a conveying mechanism located inside the carrying body; a guiding component located on the upper surface of the carrying body; and a cleaning mechanism located on the right side of the carrying body, comprising a mounting box located on the right side of the carrying body; a negative pressure module connected to the lower surface of the mounting box; and two pipes connected to the front and rear surfaces of the mounting box, with the other ends of both pipes penetrating the carrying body. Through the cleaning mechanism, this utility model utilizes the cooperation between the negative pressure module and the conical sleeve to automatically extract hemp fibers accumulated in the roller groove, preventing short fibers from converging and reducing the roller's gripping force, ensuring the roller is always in a highly efficient working state, reducing conveying failures caused by fiber accumulation, and improving the stability and reliability of the hemp feeding mechanism.

This utility model relates to the field of fiber grading technology, specifically a hemp fiber gradient separation device, including a cylinder, a feeding pipe, a screen cylinder, and a long fiber discharge assembly. The screen cylinder is rotatably installed on the inner bottom of the cylinder and extends through the cylinder to the bottom. A motor is located at the bottom of the screen cylinder, below the cylinder, for rotating the screen cylinder within the cylinder during operation. The feeding pipe is located on the side of the cylinder, and multiple feed pipes communicating with the cylinder and facing the screen cylinder are located on the side of the feeding pipe. The long fiber discharge assembly is installed at the top of the cylinder. This utility model delivers the pulp mixture under pressure to the surface of the screen cylinder through the feed pipes, causing the pulp mixture to form an upward vortex within the cylinder. Simultaneously, the screen cylinder rotates within the cylinder, allowing short fibers to enter the screen cylinder while long fibers are blocked outside. Multiple feed pipes are vertically arranged to supplement the kinetic energy of the vortex formed by the pulp mixture, thereby effectively separating short and long fibers and improving the separation effect.