204 results about "Saw dust" patented technology

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention relates to the technical field of wastewater treatment, and discloses a multi-stage wastewater treatment device for wood production, which comprises a treatment tank, and further comprises a filter cartridge I and a filter cartridge II which are cylindrically arranged in the treatment tank, and the filter cartridge II is positioned in the filter cartridge I and is used for sequentially separating impurities in wastewater; the water outlet pipe is arranged at the bottom of the filter drum II and is used for guiding out the treated wastewater; the water inlet pipe is arranged at the bottom of the treatment tank. By adopting the filter cartridge I and the filter cartridge II, continuous multi-stage filtration from rough filtration to fine filtration is realized, saw dust, fibers and other impurities with different particle sizes are removed at one time, meanwhile, online self-cleaning is synchronously carried out, and rotary filtration and filter screen cleaning are synchronously carried out through motor driving; therefore, the problem that traditional filtering equipment must be frequently shut down and manually cleaned due to quick blockage of a filter screen is solved, continuous and uninterrupted efficient operation of the wastewater treatment process is ensured, and the overall treatment efficiency and production continuity are greatly improved.

A dustless compound sliding miter saw with a built-in dust collection system is disclosed. The dustless compound sliding miter saw uses an extraction turbine to create a vacuum region at the end of the blade exist from the cut wood piecework, the blade housing has an external extraction channel and an external suction tube to maximize the dust collection. A retractable dust guard is utilized to confine the sawdust in the vacuum region to further maximize the dust collection. The compound sliding miter saw also utilizes anti-dust blade guard and air flow guide fins to optimize the airflow and the dust extraction. The compound sliding miter saw has a rail system that slides the blade from front to back and extends the maximum cutting length. The compound sliding miter saw has a built-in beveling mechanism to tile the blade and cut down through the wood at an angle.

The utility model discloses a mud egg wrapping device for making preserved eggs, which comprises a base and a connecting mechanism arranged in the base, and the connecting mechanism comprises an egg feeding component, a mud feeding component and a scrap wrapping component; the egg feeding assembly comprises a rotating belt and a conveying motor, the mud feeding assembly comprises an egg fishing motor, an egg fishing shaft, an egg fishing rod, an egg feeding plate, a discharging plate and a material mud containing groove, and the sawdust wrapping assembly comprises a vibration motor, a vibration disc and a sawdust feeding hopper. When the device works, duck eggs fall into the material mud placing groove to be fully wrapped, the duck eggs are taken out by the egg fishing rod to roll towards the vibration disc, the duck eggs are covered with saw dust in the vibration disc, the saw dust feeding hopper is filled with the saw dust, the saw dust is scattered into the vibration disc, the preserved eggs can be covered with the saw dust up and down at the same time, and the saw dust covering is more sufficient. Under the influence of gravity, the wrapped duck eggs roll towards the material collecting box to be collected, and in the rolling process, redundant saw dust falls into the saw dust recycling box through the recycling net to be recycled.

The utility model discloses a rock wool product cutting dust removal device, and relates to the technical field of cutting dust removal. The device comprises a cutting table, a belt conveyor, a first dust collection type cutting machine, a first cutting base, a first waste residue pumping pipeline, a second waste residue pumping pipeline, a second dust collection type cutting machine, a second cutting base, a third waste residue pumping pipeline, a fourth waste residue pumping pipeline, a waste residue pumping main pipeline, a dust pumping fan and a waste residue collecting box. The interiors of the first cutting base and the second cutting base are both in a hollow state, a first cutting groove is formed in the first cutting base, and a second cutting groove is formed in the second cutting base; the two ends of the first cutting base are connected with the first waste residue pumping pipeline and the second waste residue pumping pipeline correspondingly, and the two ends of the second cutting base are connected with the third waste residue pumping pipeline and the fourth waste residue pumping pipeline correspondingly. The collecting effect of saw dust can be improved, the saw dust is effectively prevented from drifting around, and the cutting quality of rock wool boards is further improved.

The invention discloses an organic fertilizer prepared based on sludge and a preparation method thereof. The organic fertilizer is prepared from the following raw materials in percentage by weight: 65-80% of municipal sludge; the organic waste accounts for 23%-30%; the biomass fermentation enzyme accounts for 5%-12%; the organic waste is prepared from 14-23% of waste generated in the traditional Chinese medicine production process, 6-12% of straw powder, 1-5% of mushroom residues, 6-13% of peanut shell powder, 8-14% of rice husks, 5-8% of plant wilt, 4-9% of kitchen waste peel, 2-6% of saw dust, 10-18% of a plastic rubber fiber fabric mixture and 12-20% of vinasse. Through preparation and use of the organic fertilizer, the soil structure can be effectively improved, the condition of soil hardening can be reduced, the effect of accelerating soil ripening is achieved for a newly-reclaimed farmland, the defects caused by directly adding municipal sludge into soil are overcome, and the economic benefit is increased. The pollution of heavy metals, pathogenic bacteria, parasitic ova, organic pollutants and odor in the municipal sludge to soil and environment is effectively prevented.

The invention provides a comprehensive resource utilization method for livestock and poultry manure, and relates to the technical field of environmental protection. The comprehensive resource utilization method for the livestock and poultry manure comprises the following steps: collection and pretreatment: collecting the manure generated in a livestock and poultry farm, carrying out solid-liquid separation on the collected manure, carrying out composting treatment on the solid part at the separation part, and carrying out anaerobic fermentation treatment on the liquid part; composting treatment: mixing the separated solid feces with straws and saw dust in proportion, and adjusting the carbon nitrogen ratio to (25-30): 1; in the composting process, the pile is turned regularly, the temperature of the pile body is kept at 55-65 DEG C, the humidity is controlled at 50%-60%, the composting period is 30-45 days, and finally the organic fertilizer is obtained. Through multistage treatment processes such as solid-liquid separation, composting and anaerobic fermentation, the maximum utilization of resources is realized, the generated organic fertilizer can replace part of chemical fertilizers and biogas to be used for power generation, heat supply or fuel, the biogas slurry fertilizer can be used for farmland irrigation or fertilization, and the cyclic utilization of the resources is realized.

The utility model relates to a section steel hot sawing machine which comprises a cutting table, a circular saw blade, a motor for driving the circular saw blade to rotate, a rack, a dust cover and a cooling water device. The dustproof cover covers the outer side of the circular saw blade, and the bottom end of the dustproof cover is open; the cooling water device comprises a nozzle arranged in the dust cover and used for cooling the circular saw blade, a cooling water tank fixedly arranged on the lower portion of the rack and located below the open end of the dust cover, and a water conveying pipe set arranged between the nozzle and the cooling water tank in a communicating mode. The number of the nozzles is two, the two nozzles are the upper nozzle and the lower nozzle respectively, the two nozzles are located on the two sides of the circular saw blade in the axial direction respectively, the upper nozzle inclines inwards and upwards, and the lower nozzle inclines inwards and downwards. The upper nozzle and the lower nozzle are matched together, so that all-directional dead-corner-free scouring of sawteeth of the circular saw blade can be realized, a good cooling effect on the circular saw blade is achieved, residues of saw dust on the circular saw blade are avoided, and the subsequent use effect of the circular saw blade is guaranteed.

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 invention discloses a stepped adjusting and cutting device for linear cutting equipment. The stepped adjusting and cutting device comprises a lower wiring groove roller, an upper wiring groove roller, a side rotating mechanism used for adjusting the state of the lower wiring groove roller and a platen. The device has the beneficial effects that the two lower wiring groove rollers are inclined downwards through the side rotating mechanism, the effect of forming an equal-height-difference stepped cutting structure for the distributed cutting lines is achieved, and a traditional horizontal equal-distance-distribution cutting line distribution mode is adjusted into a stepped equal-height-difference cutting line distribution mode; the effect of cutting one by one is achieved, the problem that a plurality of slice parts fall and collide at the same time is avoided, and operation reaction time difference is provided for follow-up implementation of ordered discharging; the saw dust wood frame is used for binding and fixing the bottom of the to-be-cut workpiece, the saw dust wood frame can be cut through the cutting line, the thoroughness of the cutting line cutting the bottom of the workpiece can be guaranteed, meanwhile, the stability of the remaining workpiece part in the cutting state can be maintained, and unnecessary cutting hindrance is reduced.

A chainsaw is provided, enabling to remove sawdust conveyed inside a main body efficiently, which has a main body including: a guide bar; a saw chain wound around the guide bar and the drive sprocket; a drive sprocket disposed behind the guide bar, having a rotation shaft in a right / left direction of the main body and rotated to move the saw chain along the guide bar; and a guide wall including an arcuate first wall along the drive sprocket with a predetermined gap from the saw chain and a second wall extended rearward via a connecting portion to the first wall, and when seen from the right / left direction, a angle between: a first direction along a vertical direction of the main body; and a second direction passing through the center of the rotation shaft and an apex of the connecting portion is between 0° and 30°.

The utility model discloses a handheld primary and secondary saw which comprises a first supporting plate, two pairs of first supporting columns are arranged on the first supporting plate, a second supporting plate is installed on the two pairs of first supporting columns in a sliding mode, a first motor is arranged on the upper wall face of the second supporting plate, a primary saw blade is arranged at the driving end of the first motor, and a secondary saw blade is arranged at the driving end of the primary saw blade. A lifting bin is arranged on the second supporting plate, a second motor is arranged on the lifting bin, a gear is arranged at the driving end of the second motor, a groove is formed in the lifting bin, the gear is rotationally arranged in the groove of the lifting bin, a rack is arranged on the first supporting plate, and the gear is meshed with the rack. The utility model relates to the technical field of wood processing, and the dust removal mechanism can collect sawdust splashed during wood processing, prevent the sawdust from being inhaled into lungs by workers, prevent the workers from suffering from pneumoconiosis, and guarantee the body health of the workers.

A preparation method of a packaging material comprises the following steps: selecting at least one of sawdust, rice husk, corn straw and wheat straw, crushing to obtain raw material powder, then adding a carbon source, a nitrogen source and inorganic salt, and uniformly mixing to obtain a matrix; the prepared matrix is sterilized, and the sterilized matrix is obtained; in a sterile environment, cooling the sterilized substrate, and inoculating an edible fungus strain; putting the matrix inoculated with the edible fungus strain into a constant-temperature and constant-humidity culture room, and culturing for 10-20 days; putting the mycelium obtained by culturing and a substrate into a pre-designed mold together for molding; drying the formed mycelium material in drying equipment at 40-60 DEG C until the water content is reduced to be less than 10%; and carrying out surface treatment on the dried mycelium material. The obtained packaging material is completely biodegradable, harmful substances are not generated in the production process, and the current environmental protection requirement is met.

The invention provides biomass fuel sourced from urban life manure residues and a preparation method and application thereof, and relates to the technical field of biomass fuel. The preparation method provided by the invention comprises the following steps: carrying out solid-liquid separation on municipal domestic manure residues and manure, and then turning and mixing the municipal domestic manure residues and manure with biomass particles to obtain a dried raw material with the water content of 8-12%; extruding and granulating the dried raw material to obtain the biomass fuel; wherein the biomass material of the biomass particles comprises one of saw dust and rice husk. According to the invention, the utilization efficiency of biomass energy can be effectively improved through resource utilization of urban living manure residues, and meanwhile, the water content and combustion performance can be effectively adjusted by mixing the manure with biomass particles.

The invention discloses a saline-alkali soil improver as well as a preparation method and a use method thereof. The saline-alkali soil improver is mainly prepared by mixing fly ash, dilute sulphuric acid, zeolite powder, sawdust, desulfurized gypsum / calcium phosphate, humic acid, a bio-organic fertilizer and a microbial fertilizer with water. The concentration of the dilute sulphuric acid is 1-3 mol / l; the saw dust does not comprise Chinese honeylocust tree saw dust and melia azedarach saw dust. The saline-alkali soil modifier is combined with irrigation and water conservancy engineering measures, crops are planted, the upper layer and the lower layer of saline-alkali soil jointly exert force, the concentration of harmful ions in the upper layer soil and the lower layer soil of the saline-alkali soil can be effectively reduced, the soil condition of the improved saline-alkali soil is close to the soil condition of a normal farmland, and the saline-alkali soil quality is improved. In addition, the saline-alkali soil improver can effectively improve the soil environment while improving the soil, and has important application value and significance compared with saline-alkali soil improvement technologies such as pure high polymer materials and the like.

The utility model discloses a cleaning head and cleaning equipment. The cleaning head comprises a shell; a cleaning member; the developing module is arranged on one side of the cleaning part and comprises a light-emitting part and a light beam processing part, the light beam processing part is used for receiving light emitted by the light-emitting part and guiding the light to a to-be-cleaned surface, the area is in a sector shape, the sector comprises a first edge and a second edge, the first edge is adjacent to the cleaning part, and the second edge is adjacent to the cleaning part; the second edge extends in the direction away from the cleaning piece, and the included angle C between the second edge and the front edge of the cleaning piece is larger than or equal to 140 degrees and smaller than or equal to 170 degrees. Therefore, by designing the cleaning head, a user can see dust in more areas, the illumination area of the light-emitting part is wide, the user can see dirt more clearly when cleaning the surface to be cleaned, the visual perception is better, the user experience is better, the user can see more dirty areas in the shortest time, the brain can quickly make cleaning action response, and the cleaning effect is better. The cleaning time is saved, and the cleaning efficiency of the user is improved.

The invention relates to a method for producing graphite. The graphite produced by the method is used as a high-temperature insulation material or a filter material in the form of a square or sheet or other part. The aim of the invention is to provide a cost-effective method for producing graphite, which enables particularly inexpensive and renewable raw materials and waste paper to be used as starting materials. The method according to the invention comprises the steps of: preparing a base material in the form of a mixture of carbon-based materials containing at least one of the following raw materials: leaves, moss or other similar materials, such as grass, corn leaves or sawdust, waste paper or natural fibers, in any mixing ratio; soaking the mixture in a solvent for a long time, and then crushing the mixture; adding a binder to the mixture until a substantially homogeneous pasty mixture becomes; pressing the mixture to remove a majority of the solvent until a pressed product which is sufficiently stable and has sufficiently low solvent content is formed; drying the pressed product until the residual solvent is completely volatilized; gt, putting the pressed product into a high-temperature furnace in an oxygen-free environment filled with inert gas or in vacuum, and gt; at the temperature of 2000 DEG C, the graphite is formed into a blocky material;

The invention discloses a shaping substrate for plant seedling raising and planting, and relates to the technical field of planting substrates, the shaping substrate for plant seedling raising and planting comprises the following components by mass: coconut fiber; fine coco coir; peat soil; an organic fertilizer; bark; straw powder; vermiculite; perlite; saw dust; calcium magnesium phosphate fertilizer; pond sludge; leaf mold; rice chaff ash; hard particles; and a plant growth regulator. According to the substrate disclosed by the invention, the original loose substrate is subjected to standardized shaping, and standardized production, optimized structural design and efficient resource utilization are utilized, so that high efficiency, environmental protection and economization of plant seedling culture and planting are realized, and the production efficiency, the resource saving rate and the plant growth quality are remarkably improved; meanwhile, diseases are reduced, pesticide use is reduced, the operation environment is improved, and healthy development of roots is promoted.

The utility model discloses an agglomerated stone sawdust powder activating and drying device which comprises a spiral drying box, a spiral material conveying copper pipe is arranged in the spiral drying box, the feeding end of the spiral material conveying copper pipe is connected with a pressurizing pump in a penetrating mode, and the pressurizing pump is arranged in the spiral drying box and used for pressurizing and rapidly conveying materials. The agglomerated stone sawdust powder enters the spiral conveying copper pipe through the discharging box to be conveyed in a spiral conveying mode, and the agglomerated stone sawdust powder in the conveying process heats the spiral conveying copper pipe through high temperature emitted by the circular heating plate of a cylinder structure. The heating speed is high, the agglomerated stone sawdust powder is rapidly conveyed in a pressurizing mode, the agglomerated stone sawdust powder in spiral conveying is always heated and dried in a moving state, and therefore the agglomerated stone sawdust powder is evenly heated and dried in the moving process. Further, the agglomerated stone sawdust powder continuously moves, the moisture is reduced, and the problem that the agglomerated stone sawdust powder adheres to the inner wall of a pipeline or discharged materials are stacked and cannot be thoroughly dried is solved.

The invention relates to the technical field of preparation of carborundum foam cleaning agents, in particular to a carborundum foam cleaning agent in a semi-quicksand state, which comprises an alkaline substance, a surfactant, a descaling agent, a solvent, an inorganic builder, carborundum foam and sawdust according to a weight ratio of 10: 15: 5: 57: 5: 1: 2. Liquid raw materials are pressurized and fed through a first liquid pump, fixed raw materials falling from a feeding pipe are sprayed at a high speed through a spraying air pump, mixed liquid of carborundum foam cleaning agent production raw materials in a semi-quicksand state falling into a container is pumped through a second liquid pump, and the mixed liquid is discharged into the input end of the first liquid pump; the mixed raw materials are sprayed out of the wide-angle nozzle again through the first liquid pump, and naturally fall, settle and spread through the gravity of the mixed raw materials, so that the stain removal effect of the carborundum foam cleaning agent in the semi-quicksand state is improved, and meanwhile, the cleaning process is simpler and more convenient.

This application relates to the technical field of solid waste utilization for preparing metal adsorbents, and particularly relates to an aluminosilicate solid waste heavy metal adsorbent, its preparation method and application. By mass, the aluminosilicate solid waste heavy metal adsorbent comprises 30-50 parts of modified aluminosilicate solid waste, 20-40 parts of modified sawdust biochar and 1.2-1.6 parts of sodium alginate; the preparation method of the modified sawdust biochar includes: S1. Prepare a modified solution: dissolve catechol in an aqueous solution of 25% ethanol, and then add a composite solvent to obtain a modified solution; S2. Mix the sawdust biochar with the modified solution in a mass ratio of 1:15, stir magnetically at room temperature for 1 h, filter and dry to obtain the modified sawdust biochar.

The invention discloses an intelligent automatic temperature and humidity control ground beetle hatching system, and relates to the technical field of ground beetle hatching, the system comprises a hatching box, the inner cavity of the hatching box is fixedly connected with a plurality of rails, one side of the inner cavity of each rail is fixedly connected with a first motor, the other side of the inner cavity of each rail is rotatably connected with a first screw rod, and the first screw rod is rotatably connected with a second motor. The output end of the first motor is fixedly connected with one end of a first lead screw, the outer side of the first lead screw is in threaded connection with a first driving block, and the bottom end of the first driving block extends to the lower portion of the track and is fixedly connected with a guide rail. By arranging the fixing base, the driving motor and the clamping jaw, ground beetles and saw dust in the hatching cavity can be automatically turned over through the clamping jaw, manual turning is not needed, the labor cost is reduced, automatic execution can be achieved, and the turning effect is better compared with manual turning.

The invention discloses an automatic sawing and packing machine for rubber raw material treatment, which comprises a fixed table, a main cutter head, an opening mechanism, a movable table and a first motor, a V-shaped stop block is arranged on the fixed table, the movable table is slidably connected to the fixed table, the main cutter head, the opening mechanism and the first motor are arranged on the movable table, and the first motor is arranged on the fixed table. A cutting edge is arranged on the edge of the main cutter head, the main cutter head is aligned to the protruding position of the V-shaped check block, the first motor drives the main cutter head to rotate, the opening mechanism comprises a friction block and an elastic telescopic rod, one end of the elastic telescopic rod is hinged to the movable table, and the other end of the elastic telescopic rod is hinged to the friction block; when the main cutter head saws off the rubber raw material bag, the moving table moves forwards, and the rubber raw material bag on the two sides of a saw seam is broken off outwards through the friction blocks. According to the automatic sawing and packaging machine for rubber raw material treatment, saw dust is reduced.

The invention relates to the technical field of firework production, and solves the problems that a firework inner barrel charging method in the market is troublesome in operation after uniform premixing and then charging, the dust concentration in the production process is relatively high, the mounting smoothness is low, a lot of residual powder is left in a charging area, and the detonation risk and the danger level of a production place are increased. The high-safety automatic filling production process for the combined firework inner barrels comprises the following steps in sequence: filling anti-blocking effect beads; separately filling a reducing agent and an oxidizing agent in a time-sharing manner; mixing in the cylinder: uniformly mixing the effect beads, the reducing agent and the oxidizing agent by adopting a high-speed rotating mechanical structure; and packaging is stable. The machine has the advantages that high-risk manual procedures which easily cause accidents are concentrated under an effective barrier and are completed through mechanical actions through automatic and mechanical bright bead filling, explosive filling, sawdust filling and sealing procedures, and the machine is small in dust, small in loss and high in safety coefficient.

This product is a portable toilet equipped with a bio-toilet that uses an agitator to mix feces, urine, etc., thrown into a treatment tank from a toilet bowl with sawdust for microbial decomposition, and is provided with three private rooms and a storeroom for storing sawdust, etc., and each private room may be equipped with, for example, a hand washing basin, a mirror, clothes hooks, and luggage storage space. This product utilizes a 20-foot container, and as shown in the reference diagram showing its usage, it may be placed on a device equipped with wheels, etc. so that it can be transported by trailer, etc.

1. Name of the product in this design: Biomass pellet mill. 2. Application of this design: To prepare biomass pellets by extruding biomass raw materials such as wood chips, bark, sawdust, straw, rice straw, corn stalks, and weeds. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other situations requiring explanation: In the front view and the perspective view, point A is made of transparent material.

The utility model discloses a fruit tree peeling device for fruit tree planting, and belongs to the technical field of fruit tree planting. A fruit tree peeling device for fruit tree planting comprises a shell and further comprises a peeling knife installed on the shell, sawteeth are arranged on the knife back of the peeling knife, a driving part is arranged on the shell, and the driving part is used for driving the peeling knife to do reciprocating motion along the axis of the shell; by starting the servo motor, the peeling knife can be driven to do reciprocating motion, the cutting force of the peeling knife can be greatly improved, a worker can easily cut off bark, time and labor are saved, and then the fruit tree grafting and planting efficiency is improved; the peeling knife can be blown and cooled in the peeling process of a fruit tree or a branch, meanwhile, a worker can be assisted in cleaning saw dust and other impurities attached to the surface of the peeling knife, and the sharpness of the peeling knife can be kept.

The utility model provides a wall panel slotting device, which belongs to the field of decoration and renovation technology. The wall panel slotting device includes a slotting device body and a dust collecting structure, the slotting device body includes a base and a slotting piece, the slotting piece is installed on the surface of the base, the dust collecting structure includes a dust collecting piece and a protective piece, the fixed end of the dust collecting piece is fixedly connected to one end of the base surface, and the dust collecting end faces the slotting end of the slotting piece, the side wall of the protective piece is bolted to the slotting end of the slotting piece, wherein, through the design of the dust collecting piece welded on one end of the base surface and the protective piece protecting the slotting piece, the sawdust and dust generated when the slotting piece is working can be sucked in and collected in time, and the protective piece is connected to the slotting end of the slotting piece by bolts, and its main function is to prevent sawdust and dust from splashing, and protect the operator from accidental injury, and can be applied to different slotting pieces.

To provide a hydrolysis acceleration method of cellulose for decreasing molecular weight of cellulose in an organic sludge and a food residue while suppressing the carbonization rate.SOLUTION: In a hydrolysis acceleration method of cellulose with a carbon rate not exceeding 50% by hydrolysis treatment of an organic sludge including a food residue by a super heated steam reaction at 200°C or under while maintaining a water content of around 50% in the presence of a blended reaction acceleration agent including a crushed powder having an average grain size of 10 mm±5 mm in length including saw dusts, wood waste chips, dry straw, chaff, branches, barks, wood chips, and dry plants as the main component, in which the organic sludge is subjected to a contact reaction with a super heated steam of 300°C or under in a reactor for hydrolysis at 200°C or under so as to decrease molecular weight to hemicellulose. The reactor is assembled with a ribbon blender formed by providing an inner blade 152 and an outer blade 153 around a main inertial axis. A counter flow stirring motion wherein a stirred product flows to the inside by the outer blade, thus strong collision repeatedly occurs while the stirred product flows to the outside by the inner blade to collide with a side case and moves to the outer blade repeatedly occurs.SELECTED DRAWING: Figure 3

The utility model discloses an electric saw for selecting branches of trees, which belongs to the field of electric tools and comprises a driving mechanism, a mounting plate is mounted on the surface of the driving mechanism, a protective box is fixedly connected to the upper surface of the mounting plate, an electric hand saw is fixedly connected to the surface of the protective box, and an adjusting mechanism is mounted on the upper surface of the protective box. Through cooperative use of the devices, through the arrangement of the driving mechanism, the electric hand saw, the rotating rod, the overturning plate, the guide plate, the pushing mechanism and other structures, before the electric hand saw is started, the protection plate is separated from the electric hand saw through the arrangement of the adjusting mechanism, and meanwhile through a driving motor, the electric hand saw is driven to rotate. The rotating rod drives the overturning plate and the pushing mechanism to rotate synchronously, so that the overturning plate is separated from the electric hand saw, the two guide plates are overturned through the arrangement of the pushing mechanism, and saw dust generated in the using process of the electric hand saw is blocked through the arrangement of the guide plates and the overturning plate.