436 results about "Sawdust" patented technology

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 invention belongs to the technical field of machine-made charcoal preparation, and particularly relates to a process for producing machine-made charcoal by drying manure and livestock farm fermentation bed padding, and fermentation raw materials comprise the following components: 3-5 parts of sawdust, 3-5 parts of chaff and 3-5 parts of straw. The invention provides a process for producing machine-made charcoal by drying manure and livestock farm fermentation bed padding, which changes the traditional process for producing machine-made charcoal, widens the raw material source for producing the machine-made charcoal, realizes waste utilization, effectively reduces the energy consumption, utilizes animal manure and livestock farm fermentation bed padding for fermentation, and improves the production efficiency of the livestock farm fermentation bed padding. The problem of feces in a live pig (poultry) farm is solved, meanwhile, the use amount of wood is reduced, energy consumption is effectively reduced, and the purposes of energy conservation and emission reduction are achieved.

The utility model discloses a wood sawing machine capable of preventing a band saw from being broken. The wood sawing machine comprises a machine body, a saw blade assembly and a driving assembly. The saw blade assembly comprises a saw blade and at least two saw wheels, and the two saw wheels are vertically arranged in the height direction of the machine body in a spaced mode and form a machining interval. One end of the saw blade is wound on one saw wheel, the other end of the saw blade is wound on the other saw wheel, and a linear transmission section, located between the two saw wheels, of the saw blade penetrates through the machining interval and forms a saw blade machining section; the saw wheel is used for driving the saw blade to rotate during rotation so as to guide the saw blade machining section to move in the machining direction. The two saw wheels are sleeved with buffer strips respectively, and the buffer strips are made of flexible materials. The buffer strip is clamped between the outer surface of the saw wheel and the saw blade; the driving assembly is used for driving the two saw wheels to rotate. A flexible buffer strip is clamped between the outer surface of a saw wheel and a saw blade, so that stress fatigue of the saw blade during operation is reduced, and the risk of breakage of the saw blade is reduced.

A method for comprehensive treatment of high-iron and low-silicon red mud through alkali magnetization roasting belongs to the technical field of metallurgy and comprises the following steps: (1) mixing the high-iron and low-silicon red mud, liquid caustic soda and a solid reducing agent, and granulating to obtain raw material pellets; (2) the raw material pellets are dried through kiln tail gas to remove adsorbed water and part of crystal water, and dried pellets are obtained; (3) the dried pellets are subjected to reduction roasting in an inert protective gas atmosphere in a dry roasting mode, and clinker pellets are obtained; and (4) the clinker pellets and a dilute alkali solution are subjected to wet grinding leaching and the like. According to the method, the high-iron and low-silicon red mud is supplemented with liquid caustic soda and solid reducing agents such as coal or sawdust organic matter and roasted, directional regulation and control of a red mud mineral phase are achieved, iron and aluminum resources are recycled in the form of magnetite and sodium aluminate, and the using amount of the reducing agents and the reaction temperature are remarkably reduced.

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.

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 tapping equipment for furniture production, which relates to the technical field of drilling machines or drilling devices and comprises a machining table, a movable frame is arranged on one side of the machining table, a perforating machine body is arranged below the movable frame, a plurality of cleaning holes are formed in the top end of the machining table, and two side plates are fixedly connected to the top end of the machining table. Two sliding rods are fixedly connected to the opposite ends of the two side plates, a fixed cleaning assembly is arranged at the top end of the machining table, through the special shape design of a first clamping plate and a second clamping plate, two arc-shaped grooves are formed in the opposite sides of two square grooves, and a circular plate can be placed between the two arc-shaped grooves; according to the trepanning equipment, the two square grooves can fix the circular plate on the basis of fixing the square plate, meanwhile, through movement of the first clamping plate, wood chips at the top end of the machining table can be conveniently cleaned, the functionality of the first clamping plate and the second clamping plate is higher, and the practicability of the trepanning equipment is improved.

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.

The invention discloses a high-strength and high-calorific-value biomass pellet fuel and a preparation method thereof, belongs to the technical field of environment-friendly biomass fuels, and provides a preparation method of the high-strength and high-calorific-value biomass pellet fuel, which comprises the following steps: drying and crushing herbivorous animal manure to obtain pretreated herbivorous animal manure; wood chips are dried and smashed, and pretreated wood chips are obtained; and mixing the pretreated herbivorous animal manure with the pretreated sawdust, adjusting the water content to 3-6% to obtain a premix, and granulating to obtain the biomass pellet fuel. According to the invention, organic wastes such as cattle and sheep manure and sawdust resources purchased from surrounding areas are organically combined to prepare the biomass pellet fuel, so that the dual goals of recycling and harmlessness can be achieved, and a feasible solution is provided for the development of clean energy.

The invention discloses a preparation method of a BC-BiOBr-OV nano composite material, which comprises the following steps: preparing BC by using sawdust as a raw material and an H2SO4 solution as a solvent and adopting a calcination method; according to the method, Bi (NO3) 3.5 H2O, BC and KBr are taken as raw materials, ethylene glycol is taken as a solvent, and then charcoal obtained by carbonizing wood chips is combined with BiOBr rich in oxygen vacancies by adopting a solvothermal method, so that the BC-BiOBr-OV nano composite material which is stable in structure, large in specific surface area, high in visible light response capability, high in carrier separation efficiency and rich in catalytic active sites is constructed. The obtained BC-BiOBr-OV nano composite material has the advantages of stable structure, large specific surface area, strong visible light response capability, high carrier separation efficiency, rich catalytic active sites and the like, and is expected to be applied to photocatalytic activation of persulfate (hereinafter PS is used) to degrade organic pollutants.

The invention belongs to the technical field of rainwater treatment, and relates to a multifunctional bioretention pond for enhancing nitrogen and phosphorus removal, a water accumulation layer, a covering layer, a planting layer, a medium layer, a submerging layer and a drainage layer are sequentially distributed in the pond from top to bottom, the drainage layer is provided with a drainage pipe, and a water outlet of the drainage pipe is flush with the top of the submerging layer; the submerged layer contains modified wood chips and scrap iron which are filled in a layered manner, the modified wood chips are obtained by grafting reaction of wood chips through a functional copolymer, and the use amount of the functional copolymer is 6-10 wt% of the wood chips; the functional copolymer is obtained by carrying out a copolymerization reaction on a pyridyl-containing acrylic acid monomer and a double-bond-containing acyl halide monomer according to a molar ratio of 1: (0.1-0.3). Through wood chip modification and filling structure improvement, a submerged layer of the bioretention pond is filled with modified wood chips and scrap iron in a layered manner, so that the bioretention pond has the effect of enhancing nitrogen and phosphorus removal, and meanwhile, the removal effect on heavy metal pollutants is also greatly improved.

A table saw dust deflection system as disclosed herein may include a table saw, and a saw dust chute having a main receptacle and a dust exhaust channel. The saw dust chute may improve the collection of sawdust from a table saw. The table saw may include a worksurface and a saw blade extending partially through the worksurface and including an axis. The main receptacle may be shaped to receive a portion of the saw blade and may include a forward upper edge. The dust exhaust channel may include an exhaust channel opening with a forward exhaust channel edge positioned less than 90 degrees from a forwardmost cutting point of the saw blade relative to the axis of the saw blade. The forwardmost cutting point may be defined at a forward intersection point between the saw blade and the worksurface.

The utility model relates to the field of furniture processing devices, in particular to a plate paint spraying device for furniture processing, which comprises a base and a plate to be painted, a portal frame is fixed at the top of the base, and a driving component is arranged at the top of the portal frame. A driving assembly is arranged on the base, a paint spraying assembly and a blowing assembly used for cleaning the surface of a plate are arranged on the driving assembly, the top of the base is connected with an overturning assembly through a lifting assembly, and the plate is detachably installed on the overturning assembly. And the surface of the plate can be subjected to blowing and cleaning pretreatment, so that dust, wood chips and other impurities on the surface of the plate are effectively removed, the paint spraying quality of the plate is improved, the furniture production quality is effectively improved, and the device is suitable for popularization.

The utility model belongs to the technical field of furniture production, and particularly relates to a furniture production wood chip cleaning tool which comprises a machining table, a supporting frame is installed at the bottom end of the machining table, a cleaning mechanism is arranged on the machining table, transverse plates are installed at the two ends of the machining table, and a fixing frame is installed at one end of the machining table. The device comprises a fixing frame, a collecting frame is placed in the fixing frame, two clamping blocks are installed at the upper end of the collecting frame, a handle is connected to the two clamping blocks jointly, filling holes are formed in one ends of the two clamping blocks, and a limiting mechanism is arranged on the fixing frame. Through the arrangement of the cleaning mechanism, wood chips generated after furniture processing can be cleaned into the collecting frame, so that the purpose of convenient cleaning is achieved, the labor intensity of manual cleaning is relieved, cleaning is convenient and labor-saving, and the furniture production progress is accelerated; and through the arrangement of the limiting mechanism, the collecting frame can be limited in the fixing frame, so that the stability of placement and storage is ensured, and meanwhile, disassembly is convenient.

The invention discloses a soil replacement medium and a preparation method and application thereof, and belongs to the technical field of municipal engineering, the soil replacement medium provided by the invention comprises an upper planting layer, a middle replacement medium layer, a lower replacement medium layer and a bottom gravel layer from top to bottom; wherein the upper planting layer comprises vermiculite and soil; the middle replacement medium layer comprises sawdust and iron ore from top to bottom; the lower replacement medium layer is river sand; the upper planting layer guarantees the growth environment of plants; the sawdust in the middle-layer filling medium is used for providing a carbon source, the iron ore and phosphate are subjected to complex reaction and generate chemical bonds, the lower-layer filling medium is used for improving the infiltration capacity, and the bottom gravel layer is used for regulating and storing and avoiding blockage, so that pollutant interception and rainwater infiltration are realized. According to the invention, vermiculite is matched with other modifying agents for use, so that the interception effect on pollutants is effectively improved.

The present invention discloses a BC-BiOBr-O V The invention discloses a preparation method of a nanocomposite material. The preparation method uses sawdust as raw material, H2SO4 solution as solvent, and adopts a calcination method to prepare BC; uses Bi(NO3)3·5H2O, BC and KBr as raw materials, and ethylene glycol as solvent, and then adopts a solvothermal method to combine biochar carbonized from sawdust with BiOBr rich in oxygen vacancies, thereby constructing BC-BiOBr-O with stable structure, large specific surface area, strong visible light response ability, high carrier separation efficiency and abundant catalytic active sites. V Nanocomposite materials, the obtained BC‑BiOBr‑O V Nanocomposites have the advantages of stable structure, large specific surface area, strong visible light response ability, high carrier separation efficiency and abundant catalytic active sites. They are expected to be used in the photocatalytic activation of persulfate (hereinafter referred to as PS) to degrade organic pollutants.

The utility model relates to the technical field of timber processing, in particular to a dust removal device for timber processing, which comprises a feeding table mounted on a drilling machine, a drilling mechanism for drilling timber is arranged on the drilling machine, and a dust removal mechanism for removing drilling dust is arranged on the drilling mechanism. Sawdust and dust in the drilling process are burst out through the dustproof cover covering the drill bit, threat to the body health of workers and pollution to the working environment caused by the flying of the sawdust and the dust are avoided, the dust in the dustproof cover is sucked out through the dust suction hose by starting the dust collector and guided into the dust collection box, and the dust collection effect is achieved. When the dust cover makes contact with the surface of wood, the drill bit moves downwards to drill holes, the position of the dust cover is not changed, at the moment, the connecting rod connected with the dust cover pushes the pointer to move upwards along the guide sliding groove, and the drilling depth of the drill bit can be known by observing the upward moving height of the pointer.

The utility model discloses a dust falling device for a chain saw, relates to the field of chain saws, and aims to solve the problems that dust generated when the chain saw is used in the prior art contains a large amount of wood chips, and a dust suction port of an existing dust falling device is not provided with a wood chip prevention mechanism, so that the wood chips directly enter the dust falling device, and the use of the dust falling device is influenced. A saw blade is fixedly connected to one side of the chain saw body, a saw chain is rotationally connected to the saw blade, a dust suction hood is fixedly connected to the lower end of the chain saw body, a blocking net is fixedly connected to one side of an air suction opening of the dust suction hood, a fixing frame is arranged on the edge of the blocking net, and a connecting pipe is arranged in the middle of the other side of the dust suction hood. A telescopic hose is connected to one side of the connecting pipe, and a dust suction device is arranged on the other side of the telescopic hose.

The utility model relates to the technical field of cutting machines, and discloses a numerical control cutting machine with a protection function, which comprises a cutting table and a protection shell, the cutting table is connected with a motor and an upper cover with openings on two sides, the power output end of the motor is connected with a driving shaft, the driving shaft is rotatably connected with the cutting table, the driving shaft is connected with a cutting saw, and the cutting saw is connected with the protection shell. The cutting saw penetrates through the cutting table and extends into the upper cover, guide rods are connected to the positions, on the two sides of the cutting saw, of the upper cover correspondingly, mounting plates are connected to the two sides of the protective shell correspondingly, the mounting plates slidably penetrate through the guide rods, and springs are connected between the mounting plates and the upper cover. Driving plates capable of driving the protective shell to move upwards are connected to the two sides, in the direction parallel to the cutting saw, of the protective shell correspondingly, and a dust removal assembly capable of sucking saw dust and removing dust is connected to the protective shell. Compared with the prior art, the protective device has the advantages that the cutting saw can be completely shielded conveniently, automatic opening is facilitated, the protective effect is good, and dust removal is facilitated.

The utility model relates to the technical field of smoking furnaces, in particular to a smoking furnace which comprises a furnace body and a smoking box, a grill is arranged in the furnace body, the smoking box is arranged in the furnace body, a box cover is arranged on the upper portion of the smoking box, a plurality of smoking holes are formed in the box cover, the box cover is detachably connected with the smoking box, an inserting groove is formed in the side wall of the furnace body and corresponds to the smoking box, and the inserting groove is connected with the smoking box. The smoking box is detachably connected to the inserting groove, the smoking box extends into the inserting groove and then is located on the lower side of the grill, a heating plate is arranged on the lower side of the smoking box, and an electric heating pipe is embedded in the heating plate. The amount of wood chips stored in the smoking box just meets one-time smoking, the wood chips can be added into the smoking box more conveniently, only the smoking box needs to be taken out, the oven door does not need to be opened, the side door does not need to be opened, the influence on the temperature is small, and the wood chips can be conveniently cleaned by a user through the detachable connection mode of the smoking box and the oven body; the smoking holes in the box cover can effectively control the release amount of smoke in the smoking process, and it is ensured that the smoking effect is uniform.

The utility model relates to the technical field of carbonized wood processing, in particular to a carbonized wood polishing and dust removing device which comprises supporting legs, a frame is fixedly connected to the tops of the supporting legs, a conveying belt is rotatably connected to the interior of the frame, anti-skid lines are formed in the surface of the conveying belt, and a supporting frame is fixedly connected to the middle of the outer side of each supporting leg. A driving frame is fixedly connected to the top of the supporting frame, a dust suction box is fixedly connected to the top of the driving frame, the interior of the driving frame communicates with the interior of the dust suction box, the conveying belt penetrates through the interior of the driving frame, a collecting box is fixedly connected to the top end of the inner side of the dust suction box, and a rail is fixedly connected to the bottom end of the inner side of the dust suction box. Compared with an existing carbonized wood grinding and dust removing device, the carbonized wood grinding and dust removing device has the advantages that through the design of the adsorption head and the collecting box, ground carbonized wood sawdust can be rapidly collected, and the overall practicability is greatly improved.

The present invention relates to the technical field of biomass power generation, and specifically discloses a high-efficiency and high-adaptability dual-fluidized-bed gasification and baking device, which includes a base. Above the base, there are a fluidized-bed baking furnace and a fluidized-bed gasification furnace. The fluidized-bed baking furnace is on the left side of the fluidized-bed gasification furnace. A cyclone dust collector is fixedly installed at the outlet of the fluidized-bed gasification furnace. A processing component is arranged on the right side of the cyclone dust collector. The processing component includes a bottom pipe arranged on the right side of the cyclone dust collector. A processing pipe is fixedly inserted at the top of the bottom pipe. A top pipe is fixedly inserted at the top of the processing pipe. A gas discharge pipe is fixedly inserted at the middle position of the top of the top pipe. Through the cooperation of the above structures, the biomass gas introduced into the processing pipe can be cooled, so as to produce liquid tar impurities, and the sawdust in the processing frame is used to adsorb the tar impurities, so as to treat the tar impurities in the biomass gas and ensure that the amount of impurities contained in the produced biomass gas is less.

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.

This invention discloses a formula and preparation process for high-calorific-value leaf and walnut shell composite bio-granules. The formula consists of 40% solid wood sawdust, 45% walnut shells, 10% highland barley straw, and 5% leaves. The preparation process includes: slicing, drying, coarsely crushing, and sieving the solid wood sawdust, highland barley straw, and leaves; separately crushing the walnut shells and mixing them with the above-mentioned impurity-removed raw materials, followed by fine crushing; finally, pelletizing the mixture into granules with a length of 5 cm and a diameter of 1 cm using a pelletizer. The granules have a lower heating value of 20.8 MJ / kg (approximately 5000 kcal / kg), a basic ash content of 1.93%, a basic sulfur content of 0.05%, and a dry ash-free volatile matter content of 78.15%. This invention realizes the resource utilization of agricultural and forestry waste, producing a high-calorific-value, low-pollution product. The preparation process is simple and controllable, and it can replace fossil fuels, making it suitable for industrial and civilian applications with significant economic and environmental benefits.

A continuous wet sawdust drying system comprises a wet sawdust conveying belt (1), a drum screen (2), an impurity conveying belt (3), a wet sawdust feeding belt (4) and a drying system, wherein the drum screen (2) is arranged below the discharging end of the wet sawdust conveying belt, and the upper line of the drum screen (2) is obliquely arranged; the impurity conveying belt (3) is arranged below the lower end of the drum screen; the wet sawdust feeding belt (4) is arranged below the high end of the drum screen; the saw dust drying device can continuously and efficiently dry wet saw dust and is low in production cost.

The utility model provides a dust collection woodworking bench saw which comprises a machine shell, a motor, a saw blade and a dust collection cover, installation parts are arranged at the two ends of the machine shell, one side of the machine shell is detachably connected with the dust collection cover, the motor is fixed to the other side of the machine shell, the dust collection cover and the machine shell are combined to form a dust collection bin, hooks are arranged on the two sides of the outer portion of the dust collection bin, and a connecting hole is further formed in the machine shell. A motor shaft of the motor is arranged in the dust collecting bin through the connecting hole, the saw blade is installed in the dust collecting bin and connected with the motor shaft of the motor, and the whole machine is light in weight, small in size, convenient to carry and transfer and diversified in application scene. Sawdust falls into the dust collection bag, and the dust collection effect is good; due to the direct-drive design, the production and maintenance cost is reduced; the dust collection cover is detachable, so that the saw blade is convenient to disassemble and replace; the motor needs to be started through a key switch, misoperation can be prevented, and safety is guaranteed; the contactor can rapidly cut off the power supply when the circuit is abnormal, and the soft starter can smoothly accelerate in the motor to protect the equipment and personal safety.

The utility model discloses a plywood cutting device which comprises a cutting table, the upper surface of the cutting table is fixedly connected with a fixing frame, a dust collector is installed on the upper surface of the fixing frame, a sliding dustproof cover is arranged in the fixing frame, and the outer surface of the sliding dustproof cover is fixedly communicated with a first dust collection pipe. Symmetrical adjusting plates are fixedly connected to the outer surface of the sliding dustproof cover, two springs are fixedly connected to the upper surface of each adjusting plate, and the top end of each spring is connected with the inner wall of the fixing frame. According to the plywood cutting device, a cutting mechanism driven by a motor is adopted, a positioning plate and an adjusting mechanism are combined, accurate positioning and stable cutting of plywood can be achieved, and the accuracy of the cutting size is ensured; and wood chips and dust generated in the cutting process can be effectively collected, dust diffusion is reduced, and the machining environment is improved.

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.

The embodiment of the invention provides a submerged super-amphiphobic oil-water separation material and a preparation method thereof, and belongs to the technical field of oil-water separation materials. The submerged super-amphiphobic oil-water separation material comprises wood chips, a CuO seed layer coated on the surface of the wood chips, and CuS nanocrystals coated on the surface of the CuO seed layer. The under-liquid super-amphiphobic oil-water separation material has excellent underwater oleophobicity and under-oil hydrophobicity, can be used for continuous separation of oil-water mixtures in different scenes, and also has the advantages of low cost, simple process, easiness in degradation, reproducibility and recyclability; the problems that an existing oil-water separation material is complex in preparation process, high in cost, unstable in performance, not prone to degradation, difficult in waste treatment and the like are effectively solved.