85results about How to "Increase shear force" patented technology

The invention discloses rock crushing and coring equipment for geotechnical engineering investigation, and belongs to the technical field of drilling equipment. The rock crushing and coring equipment for geotechnical engineering investigation comprises a drilling tool, a sampling barrel and a high-pressure water supply device, and further comprises a triggering part, a coring part and a control part, and the triggering part is arranged at the end, away from a drill bit of the drilling tool, of the sampling barrel; a first sliding groove is formed in the water flow reversing part, the high-pressure water supply device communicates with a water outlet in the drill bit through the water flow reversing part, the water flow reversing part communicates with the first sliding groove, and the water flow reversing part is used for communicating the high-pressure water supply device with the first sliding groove when the triggering part is triggered; one end of the sliding sleeve is hermetically and slidably connected into the first sliding groove; the cut-off part is connected with the other end of the sliding sleeve, and when high-pressure water is introduced into the first sliding groove, the sliding sleeve drives the cut-off part to move into the sampling barrel. According to the rock crushing and coring equipment for geotechnical engineering investigation, the drill bit can be cooled by using high-pressure water, the abrasion of the drill bit is reduced, and a rock core is cut off by using the high-pressure water as power, so that the integrity of the obtained rock core can be ensured.

The invention discloses an organic extraction device for preparing an organic framework material, and relates to the technical field of extraction devices. Comprising an extraction tank, the extraction tank is provided with an upper feeding port, a lower feeding port, an upper discharging port and a lower discharging port, and fixing rings distributed in a linear array mode are installed in the extraction tank; the fixed shell is rotationally connected to the extraction tank; the plurality of first telescopic shells and the plurality of second telescopic shells are embedded in the fixed shell; the first turntable is in limited sliding connection with the fixed shell; and the second turntable is connected to the fixed shell in a limiting and sliding manner. By detecting the concentration of an organic component in a stock solution, when the concentration of the organic component is increased, the distance between the first turntable and the second turntable and the fixed ring is reduced, so that the flow area of liquid in the extraction tank is reduced, a higher shearing force is generated when the solution flows, the dispersion degree of liquid drops of the solution is increased, and the extraction efficiency is improved. The mixing speed of the stock solution and the extractant is accelerated, and the mass transfer efficiency is improved.

The invention provides a defibrating device for preparing high-concentration nano cellulose based on an enzymolysis method.The defibrating device comprises a stirring assembly, a shell and a cover, the stirring assembly comprises a stirring paddle capable of rotating in the first direction, a plurality of first inclined grooves are formed in part of the peripheral face of the stirring paddle, and the shell is provided with an inner cavity, a first opening and a second opening; the shell can move relative to the stirring assembly in the first direction, a plurality of second inclined grooves are formed in the bottom face of the inner cavity, the stirring assembly enters and exits the inner cavity through the first opening, the cover is arranged on the top of the stirring assembly and can move relative to the stirring assembly in the second direction, and a plurality of third inclined grooves are formed in the bottom face of the cover. According to the defibrating device for preparing the high-concentration nano cellulose based on the enzymolysis method, under the auxiliary action of enzyme hydrolysis, materials can be uniformly and efficiently treated in the defibrating process through a multidirectional shearing and friction mechanism, and the problems that defibrating is incomplete and the product size uniformity is poor are solved.

The invention relates to a strong plugging type oil-based drilling fluid system suitable for a fractured formation and a preparation method thereof, the oil-based drilling fluid system comprises the following components by mass: 70-80 parts of base oil, 3-5 parts of an integrated emulsifier, 1-3 parts of an alkalinity regulator, 2-4 parts of a liquid filtrate reducer, and 1.5-3 parts of an oil-based efficient tackifying and shear strength improving agent, 1.5-3.0 parts of a multi-stage crack plugging agent and 0-80 parts of a weighting material. The strong-plugging oil-based drilling fluid is wide in application range, the density can be adjusted between 0.9 g / cm < 3 > and 2.2 g / cm < 3 >, and the strong-plugging oil-based drilling fluid has relatively good rheological property, suspension stability and filter loss control capability in a range of 60-170 DEG C and can be applied to shale gas drilling construction of a fractured formation.

The invention discloses a high-shear dynamic mixing reaction device for preparing flexible particles and a dynamic treatment process, and relates to the technical field of preparation of battery raw materials, and the process is characterized in that a flexible particle material for a battery is prepared in a compact space by adopting a pulsating stress dynamic processing method on the basis of an existing chemical formula. Performance obtained by a material formula and performance obtained by pulsating stress dynamic processing are mutually complemented to form an organic whole, the reaction device comprises a barrel, a feeding port is formed in the top of the barrel, a discharging port is formed in the bottom of the barrel, and a kneading and turning mixing mechanism is arranged, rotation of a stirring shaft is used as driving force of a sliding block, so that the material formula and the pulsating stress dynamic processing are combined, and the material formula and the pulsating stress dynamic processing are combined. The sliding block slides in the fixed sleeve in a reciprocating mode, upward and downward pressure is provided for materials in the barrel, the triangular fins are arranged on the baffles in a matched mode, the tips of the triangular fins can provide better shearing force for material particles rotating moderately, the materials are continuously kneaded and turned over and tend to be round, and carbon coating can be more uniform.

The invention provides a cationic alkyl glycoside soilless phase drilling fluid. The cationic alkyl glycoside soilless phase drilling fluid is prepared from the following components: 3 to 8 parts of cationic alkyl glycoside, 0.2 to 0.5 part of a coating agent, 0.2 to 0.8 part of a tackifier, 0.5 to 1 part of a filtrate reducer, 0.8 to 1.5 parts of a lubricant, 0.3 to 1.5 parts of a pH regulator, 2 to 3 parts of a reservoir protective agent, 1 to 2 parts of a weighting agent and the balance of water. The cationic alkyl glycoside soilless phase drilling fluid provided by the invention has the advantages of strong anti-sloughing inhibition property, facilitation of mudstone section anti-sloughing and borehole wall stability, excellent rheological property, good rock debris pollution resistance, improvement of the viscosity and shearing force of the drilling fluid, effective improvement of the rock debris carrying capacity of the drilling fluid, and improvement of the drilling efficiency. The lubricating capacity of the drilling fluid is also improved, drill jamming is prevented, the frictional resistance of the drilling fluid is reduced, the plugging capacity of the drilling fluid is enhanced, and the defoaming agent is arranged to reduce bubbles and reduce the influence of the bubbles on the plugging effect of the drilling fluid.

The invention discloses a filtering and antibacterial device for a hemodialyzer in nephrology, and specifically relates to the field of antibacterial disinfection of medical materials. The device comprises a main body mechanism, an auxiliary regulating mechanism is fixedly installed on the outer wall of the main body mechanism, a fluid channel mechanism is rotatably installed inside the main body mechanism, a plurality of dynamic filtering mechanisms are fixedly installed inside the fluid channel mechanism, and the fluid channel mechanism comprises a plurality of supporting layers, and the plurality of supporting layers are arranged in a superimposed state along the longitudinal center line direction thereof; the invention arranges a plurality of superimposed supporting layers, and arranges a guide tube and a spiral guide plate inside each supporting layer, so that a continuous vortex is formed when the dialysate flows through these spiral structures, thereby increasing the shear force of the fluid, thereby reducing the accumulation of impurities, avoiding the clogging of the filter holes, and reducing the probability of bacteria remaining in the impurities, thereby achieving a highly efficient physical antibacterial effect.

The invention discloses efficient processing production equipment and a production method for high-meat-slurry pet feed, and belongs to the technical field of pet feed processing.The upper portion of a stirring kettle is provided with a lifting mechanism and a discharging mechanism, the discharging mechanism is provided with an unsealing mechanism, and one end of the unsealing mechanism is movably sealed with the discharging mechanism; according to the invention, on the premise of ensuring slow rotation of the stirring mechanism, the stirring mechanism continuously rotates for several circles anticlockwise firstly and then rotates for several circles anticlockwise, and through intermittent reverse rotation, the shearing force of high meat slurry in the stirring kettle during stirring is greatly enhanced, the original flowing layer of the high meat slurry is damaged, and the stirring efficiency is improved. According to the high-meat-slurry pet feed processing device, the powdery additive is put in the positive and negative rotation switching process, so that the powdery additive is mixed into the high-meat slurry at the shearing point, the uniform mixing speed of the powdery additive and the high-meat slurry is higher, the processing efficiency of the high-meat-slurry pet feed is higher finally, and small meat blocks of the high-meat slurry cannot be stirred into fine powder.

The invention belongs to the technical field of water pollution treatment, and particularly relates to water quality monitoring and agent feeding integrated equipment which comprises a treatment pond and further comprises an agent feeding assembly, the agent feeding assembly is located on the inner side of the treatment pond and comprises a feeding tank and a piston, the piston is slidably mounted on the inner wall of the feeding tank, and the piston is movably mounted on the inner wall of the feeding tank. According to the agent putting assembly, the piston moves in the putting tank to extrude agents in the putting tank, so that the agents are sprayed out of the putting tank under the action of pressure, and the putting work of the agents is achieved. When liquid medicine feeding work is conducted, the piston ascends and descends above the connecting hose, the liquid medicine is sprayed out of the feeding tank through the liquid spraying pipe by means of extrusion of the piston on the liquid medicine, different pressures are applied to the liquid medicine through the piston, the spraying distance of the liquid medicine is changed, and the liquid medicine is sprayed with the feeding tank as the center at different radius distances. The feeding range of the liquid medicine is increased, so that the liquid medicine is better mixed with the wastewater, and the purification effect on the wastewater is promoted.

This utility model discloses an addition mechanism for a dimethyl adipic acid esterification catalyst, belonging to the technical field of catalyst addition mechanisms. The addition mechanism includes a hopper fixedly installed on an esterification reactor. The hopper is equipped with an inlet pipe and an outlet pipe. An auger blade is rotatably installed inside the outlet pipe, and the outlet pipe is connected to the inlet pipe of the esterification reactor. The mechanism also includes a connecting cylinder rotatably installed inside the hopper. An installation rod is slidably installed on the connecting cylinder. A spring is installed inside the connecting cylinder, with its two ends abutting against the connecting cylinder and the installation rod, respectively. A scraper is fixedly installed at the end of the installation rod, contacting the hopper. Top blocks are arranged annularly on the inner wall of the hopper. This utility model generates vibration through the cooperation of the scraper and the hopper, thereby dispersing the catalyst and avoiding the problem of bridging and clogging caused by the interlocking of particulate catalyst particles, effectively improving the stability of the feed to the esterification reactor.

This application relates to the technical field of dust removal, and in particular to a multi-stage dust removal device and method for coal mine roadways with impact resistance. The device includes an upward-opening water tank with an outlet on the side. A rotating shaft is rotatably mounted on the bottom of the water tank via a bearing. A cavity for air passage is formed inside the rotating shaft. A pushing mechanism is installed on the part of the rotating shaft located inside the water tank, and a pre-treatment mechanism that cooperates with the cavity is installed on the top of the rotating shaft. The pushing disc and the fan-shaped plate cooperate to push impurities floating on the water surface upward, which can effectively remove floating impurities on the water surface and prevent them from forming a barrier film on the water surface. This creates an unobstructed channel for gas diffusion. That is, when the water surface is kept clean and unobstructed, the gas can escape from the water surface more smoothly, the separation efficiency of impurities and gas is significantly improved, and thus the dust removal effect of the gas is greatly improved.

The utility model discloses organic solid waste pretreatment equipment of multistage crushing and magnetic separation integration, including support board, the upper end fixed connection of support board is connected with the pulverization frame and transmission case, the upper end fixed connection of pulverization frame has the pulverization box, the right side of pulverization box is provided with the feeding port, first crushing mechanism, first crushing mechanism includes the first rotation axis rotation connection in the front and rear inner wall of pulverization box, and the outside equal interval fixed connection of first rotation axis has a plurality of crushing pestles, second crushing mechanism, second crushing mechanism includes two shearing type crushing rollers rotation connection in the front and rear inner wall of pulverization frame. When using the equipment, first adopt hammer type crushing and carry out rough crushing, then utilize shearing type crushing and carry out fine crushing, improve actual crushing effect, improve the overall service life of crushing part simultaneously, in addition, can also screen the metal after crushing, avoid metal and enter carbonization system and damage equipment.

The utility model relates to the technical field of titanium dioxide production and processing, and discloses titanium dioxide finished product packaging equipment which comprises a frame, a fixing plate is fixedly connected to the middle of the frame, an outer shell is fixedly connected to the inner wall of the fixing plate, a bottom shell is fixedly installed on the bottom wall of the outer shell, and a servo motor is fixedly connected to the top wall of the outer shell. The output end of the servo motor penetrates through the top of the shell and is fixedly connected with a rotating column, a clamping shell is fixedly connected to the outer wall of the rotating column, a mounting shell is arranged in the middle of the outer wall of the rotating column, the top of the mounting shell is clamped with the bottom of the clamping shell, and a plurality of scattering plates are fixedly connected to the outer wall of the mounting shell. According to the utility model, the plurality of scattering plates and the stirring column are driven by the rotating column to rotate, then the shearing force of the scattering plates is improved in the plurality of through grooves, meanwhile, the mounting shell is disassembled and assembled by disassembling the bottom shell and the bolts, and finally, the situation that the discharge valve is blocked due to adhesion of titanium dioxide is reduced.

The utility model provides a semiconductor packaging structure. The semiconductor package structure includes a substrate for the semiconductor package structure. The substrate for the semiconductor packaging structure is provided with a first surface used for arranging a chip, at least partial area of the first surface is a groove arrangement area, and the groove arrangement area is provided with a plurality of grooves. According to the substrate for the semiconductor packaging structure, the plurality of grooves are formed in the groove setting area, so that when the chip is arranged, the bonding force between the substrate and the bonding glue for bonding the chip can be increased through the grooves, and the bonding force between the chip and the substrate for the semiconductor packaging structure is improved; and the destructive shearing force resistance of the semiconductor packaging product is increased, so that the service life and the reliability of the semiconductor packaging product are improved.

The utility model provides a kind of aramid rope anti-drop spoke mounting structure, comprising: aramid spoke, including spoke main body and the installation component being set to the both ends of spoke main body, the outside section of installation component is in echelon structure, installation component is along the both ends of spoke main body extension direction size increasing, the installation component is non-rotating body shape;Setting to the dental cap of aramid spoke both ends, the dental cap is in with the connecting portion of installation component adaptation is set, installation component is wedged into connecting portion and further the dental cap is fixed on the both ends of aramid spoke portion.Upper installation component is set in non-rotating body shape both ends, and with the dental cap fixed connection being set on wheel rim, aramid fiber can be prevented from showing weak when bearing compression force, shear force or torsional load, the problem that spoke torsion can appear in the riding process, improve riding stability.

The invention discloses an integrated water-fertilizer irrigation device for rice, which belongs to the field of agricultural planting. The device comprises a frame, a support plate fixedly connected to the lower end of the frame, and a wheel body rotatably connected to one side of the support plate. A water-fertilizer mixing unit is arranged at the upper end of the frame, and the water-fertilizer mixing unit is used to transport irrigation water and liquid fertilizer into a water-fertilizer mixing component, and the water-fertilizer mixing component is used to directly mix the liquid fertilizer with the irrigation water. The irrigation water in the rotary joint and the liquid fertilizer in the fertilizer pump can be directly mixed quickly and evenly through a static mixing element, so that the fertilizer is fully dispersed and evenly distributed in the irrigation water, and the efficiency and accuracy of fertilization are improved. In this way, the rotary joint is directly connected to an irrigation water supply pipe, and water-fertilizer integrated irrigation can be directly realized by real-time water supply. The device does not need to carry a water tank and a stirring and mixing box, which improves the flexibility of the device and the stability of the device in the field.

This invention discloses a side-mounted magnetic stirring device and method. The device includes a storage unit, a spherical stir bar placed inside it, and a magnetic stirrer disposed on its outer wall. The spherical stir bar has an embedded magnet, and the magnetic stirrer drives the spherical stir bar to roll and / or rotate through a magnetic field. The outer wall of the storage unit may be provided with a slide rail or guide groove, and the magnetic stirrer can move axially via a slider or roller; it may also include a fixing component and an adjusting screw for connecting the magnetic stirrer and the liquid-pushing piston and adjusting their relative positions. The method includes placing the spherical stir bar inside the storage unit, starting the magnetic stirrer to drive stirring, and making the magnetic stirrer move synchronously with the liquid-pushing piston. This invention requires no modification to the opening, does not occupy bottom space, has no leakage risk, and is easy to assemble and disassemble, making it particularly suitable for tubular liquid storage units with limited bottom space or requiring temporary stirring.

The utility model relates to the technical field of coating production equipment, in particular to a microcellular foaming forming machine for a heat-preservation stone-chip-resistant coating. Comprising a mixing stirrer, raw material storage tanks connected with the interior of the mixing stirrer through pipelines, a plurality of metering pumps arranged on the pipelines and in one-to-one correspondence with the raw material storage tanks and a gas introduction device connected with the interior of the mixing stirrer, and a rotating shaft is arranged in the mixing stirrer through a driving device; three layers of blades of a spiral structure are sequentially arranged on the rotating shaft in the axial direction of the rotating shaft, and sawteeth are arranged on the edges of the front ends of the blades. By optimizing the paddle, the efficient stirring and mixing of the coating are realized, and better conditions are provided for foaming, so that the foaming effect of the coating is greatly improved.

The invention relates to a high-hardness galvanized plate and a preparation method thereof, and belongs to the technical field of galvanized plates. The nano coating of the high-hardness galvanized sheet with the nano coating comprises the following components: silicon dioxide, zinc oxide, aluminum triphosphate, 1-methyl hydantoin-2-imide, tert-butyl sulfonamide, polystyrene-acrylic acid allyl ester, epoxy resin, polyurethane resin and the like. All the components are matched for use according to a specific proportion, so that the coating has good coating homogeneity, good adhesive force and outstanding corrosion resistance and aging resistance, and the service life of the nano-coating galvanized sheet can be effectively prolonged; the designed steel plate components have high hardness and good use performance, and the service life can be well prolonged when the steel plate components are matched with a plating layer and a coating.

The application belongs to the technical field of feed cutting and discloses a silkworm feed cutting equipment, which comprises a mounting plate, a control box fixedly connected to one side of the mounting plate and a discharge box fixedly connected to the other side of the mounting plate. A double auger is fixedly connected between the control box and the discharge box. The wave groove, the U-shaped plate and the moving frame are cooperated to facilitate the reciprocating pulling cutting of the steel wire on the feed, thereby improving the shearing force of the steel wire. Since the two sides of the moving frame are fixedly connected with the steel wire through the slide posts, the steel wire can be driven by the moving frame to move transversely and reciprocally at the discharge opening position of the discharge box to cut the strip-shaped feed into granular feed. The wave groove in the U-shaped plate continuously extrudes the slide post, so that the moving frame moves transversely and reciprocally in a short distance longitudinally at the same time, and the steel wire moves synchronously to reciprocatingly and pullingly cut the feed, thereby effectively improving the smoothness of the feed cutting surface and avoiding adhesion.

The application provides a nucleic acid cleavage device and a control method thereof, wherein the nucleic acid cleavage device comprises a device main body and a vibrating needle body, the vibrating needle body is detachably connected with the device main body, an ultrasonic unit is arranged in the device main body, an ultrasonic head of the ultrasonic unit is vibrationally coupled with the vibrating needle body, and the vibrating needle body has a cleavage working state of being at least partially inserted into a nucleic acid reaction liquid in a reaction liquid container. The ultrasonic unit directly conducts the action on the vibrating needle body to generate high-frequency vibration and then directly conducts the action on the nucleic acid reaction liquid, so that strong vibration and micro-flow effect are caused in the nucleic acid reaction liquid, the shearing force of the cleavage liquid on the cell membrane is enhanced, and the cleavage is more uniform. Since the ultrasonic wave can be directly conducted to the liquid in which the vibrating needle body is inserted and is not absorbed and scattered by a container base body with a large size, the utilization efficiency of the ultrasonic wave energy is significantly improved, and the cleavage time is shorter.

The utility model discloses a kind of veneer laminating machines, including two mounting plates, two described mounting plate is fixedly connected with cylinder one, the telescopic end of the cylinder one is fixedly connected with fixed block, two described fixed block is rotatably connected with spline sleeve, the spline sleeve spline is connected with sliding sleeve, two mounting seats are fixedly connected with the sliding sleeve, the mounting seat detachably connected with slitting knife, the both ends of the spline sleeve are fixedly connected with gear ring, the fixed block is fixedly connected with motor one, the telescopic end of the motor one is fixedly connected with gear, and the gear is engaged with adjacent gear ring. The utility model is equipped with two slitting knives by symmetrical installation, and spline sleeve linkage structure is used, in combination with the 180 ° rotation function of motor-driven gear ring, spare blade can be switched quickly when lower slitting knife wears. This design eliminates the necessary production line shutdown process of traditional tool changing, effectively avoids the production capacity loss caused by shutdown maintenance, and greatly improves the continuous operation efficiency of laminating machine.

Embodiments of the present application provide a method, device, equipment, medium and product for controlling oscillating airflow. The method comprises: obtaining a current oscillation cycle signal of oscillating airflow generated by a sputum discharge device, and obtaining positive and negative half cycle peak values and positive and negative half cycle areas of the current oscillation cycle signal; judging a current human body inhale and exhale state; adjusting positive and negative half cycle pressure and positive and negative half cycle time of a next oscillation cycle signal of the oscillating airflow according to the positive and negative half cycle peak values and the positive and negative half cycle areas, so that a ratio of an absolute value of a negative half cycle peak value to an absolute value of a positive half cycle peak value of the next oscillation cycle signal of the inhalation phase is greater than a first value, and an absolute value of the positive half cycle area is not less than an absolute value of the negative half cycle area; a ratio of an absolute value of a negative half cycle peak value to an absolute value of a positive half cycle peak value of the next oscillation cycle signal of the exhalation phase is greater than a second value, and an absolute value of the positive half cycle area is not greater than an absolute value of the negative half cycle area. The scheme of the present application improves the effectiveness of airway secretion discharge.

The utility model discloses an organic matter purifying agent raw material pretreatment device, and the device includes the stirring tank with the cone bottom and is arranged in the agitator of stirring tank, wherein, the agitator includes stirring shaft and sets up the intermediate stirring structure, the outer periphery stirring structure and the bottom stirring structure on stirring shaft, the outer periphery stirring structure includes the extension arm fixed in stirring shaft both sides, the extension arm end is provided with the stirring column and is provided with the stirring arc plate between stirring column, the stirring arc plate shape is semicircular arc plate, and one end is fixed in the upper end of one stirring column, and the other end is fixed in the lower end of another stirring column. The device is through multilayer stirring and optimization feeding design, improves the utilization of medicine, reduces the operating cost, prevents the equipment from blocking, is applicable to industrial wastewater and domestic sewage treatment, and significantly improves the mixing uniformity and process efficiency.

The invention provides a stirring paddle for strengthening fluid mixing, and relates to the field of fluid mixing devices, the stirring paddle comprises a fixing sleeve, a disc and a notched paddle, the main body structure of the notched paddle is characterized in that an initial square is divided into n2 small squares, notching is carried out in the initial square along the sides of the small squares at 1 / n positions of the sides of the initial square, cutting four edges of the initial square to obtain a main body structure of the primary fractal arrangement type cut blade; iteration is continued according to the rule, the main body structure of the notched blade subjected to multiple iterations can be obtained, and the main body structure of the notched blade is obtained by at least conducting one-time iteration on the initial structure. In the rotating process of the notch blades, fluid is sheared through the notch edges of the blades, the shearing force of the blades on the fluid is enhanced, high-speed jet flow is generated, the trailing vortex structure of the blades is damaged, the fluid speed is increased, the fluid turbulence strength is enhanced, the dispersion process of energy is enhanced, the mixing transmission efficiency of the fluid is improved, and the fluid mixing effect is improved.

The application provides a room temperature curing two-component epoxy pouring sealant based on modified dimer acid epoxy and application thereof, which comprises components A and B; the raw materials for preparing the component A comprise 23-27% of a compound with the structure of formula I, 23-27% of glycidyl ether, 47.5-48.3% of hollow glass microbeads, 0.08-0.12% of a rheological additive and 1.8-2.3% of a flame retardant; the raw materials for preparing the component B comprise 33-37% of epoxy soybean oil modified dimer acid, 42-48% of dimer acid modified polyamide and 18-23% of a toughening agent. The pouring sealant has excellent open time, high board-core glass strength, flat tensile strength, flat compression strength, good sound insulation performance, excellent point load and static load experiment performance and high board-core shear force by using the compound with the structure of formula I, the epoxy soybean oil modified dimer acid with the structure of formula II and the dimer acid modified polyamide with the structure of formula III.

The utility model discloses a spark-free mining machine cutting pick, and relates to the related technical field of mining machines. The tooth comprises a tooth crown, a tooth body and a clamp spring, a fixed disc is fixed at the bottom end of the tooth crown, the tooth body is fixed at the bottom end of the fixed disc, an inner reinforcing column is fixed in the tooth body along the central axis, a nickel-based alloy hardened layer is uniformly fixed on the peripheral side of the tooth crown, and a hard alloy tool bit is fixed at the top end of the tooth crown. By arranging the tooth crown, the tooth body and the clamp spring, the cutting tooth solves the problems that the tooth body of the cutting tooth of the sparkless mining machine is not high enough in strength and is easy to damage, the crushing capability of the cutting tooth is relatively fast, and the durability is influenced, and has the advantages that the inner reinforcing column is adopted, so that the strength of the tooth body of the cutting tooth of the sparkless mining machine is higher, and the service life of the cutting tooth is prolonged. And the crushing capacity of the tooth crowns is improved through the annular grooves in the fixed disc.

This utility model provides a high-efficiency integrated bamboo shavings drying and pulverizing device, belonging to the field of bamboo shavings drying and pulverizing. It includes a machine body and a feeding funnel mounted on the machine body. A drying chamber is located at the lower part of the machine body, and a pulverizing chamber is located at the upper part. A feeding plate is also provided inside the machine body to transport the pulverized bamboo shavings into the drying chamber. It also includes an anti-entanglement pulverizing mechanism: the anti-entanglement pulverizing mechanism is located inside the pulverizing chamber. This mechanism prevents the bamboo shavings from tangling on the blades during pulverization. Through the internal air passage design of the blades, an air compressor delivers compressed air from the intake pipe to the rotating pipe, and then sprays it out through the connecting channel and the intake channel from the nozzle. The nozzle is located in the gap between the serrations, allowing the nozzle to directly align with the serration gap. This ensures that the airflow from the nozzle instantly disperses the tangled fibers, solving the problem of bamboo fiber entanglement, reducing downtime for cleaning, and achieving high efficiency.

A powder spraying system comprises a source of dry powder (4), a spray nozzle (25), and a supply conduit (16) connecting the source of dry powder with the spray nozzle. The spray nozzle comprises a nozzle body (50) having a nozzle outlet (51), a first conduit (52) for dry powder, and a second conduit (53) for gas. The first conduit extends between a powder inlet (54) in communication with the supply conduit and a powder outlet (55). The second conduit extends between a gas inlet (56) and a gas outlet (57), the gas outlet being located in proximity to the powder outlet such that a gas flowing through the second conduit and out of the gas outlet produces a suction force at the powder outlet to promote flow of a dry powder through the first conduit and out of the powder outlet and the nozzle outlet. The powder outlet and the gas outlet are orientated to promote mixing of the gas with the dry powder. The first conduit (52) is a straight conduit between the powder inlet (54) and the powder outlet (55).