43results about How to "Fast melting" patented technology

The invention discloses a power plant boiler feed water automatic dosing device, and relates to the field of dosing devices.The power plant boiler feed water automatic dosing device comprises a stirring barrel, a feeding hopper is arranged on the top face of the stirring barrel, and a PLC is arranged on the outer circle wall face of the stirring barrel; through mutual cooperative use of a stirring barrel, a cover plate, a preliminary mixing bin, a first fixing hole, a first connecting pipe, a rotating mixing barrel and a bearing, the effect of dissolving medicine powder can be achieved, caked medicine powder can fall off through a feeding hopper with the side wall almost perpendicular to the side wall, medicine blocks are crushed into small blocks through rotation of a micro auger, and the medicine powder is more uniform. The medicine powder is continuously turned over in the rotary mixing barrel, the caking condition is further eliminated, meanwhile, water is added into the medicine powder, the medicine powder is turned over to make full contact with the water, heating is matched, the dissolving speed is higher, the dissolving effect is better, then the medicine powder is added into the water in the stirring barrel, and the situation that precipitation occurs due to the fact that the medicine powder is not dissolved in time is avoided; and meanwhile, the dissolving effect is ensured, and the device is relatively practical.

The invention discloses a method for smelting direct reduction iron through an electric furnace. The method comprises the following steps that S1, a direct reduction iron raw material with the high carbon content is obtained through a shaft furnace; s2, a molten pool is firstly formed in the electric furnace; s3, the direct reduction iron raw materials are added into an electric furnace molten pool in batches for electric furnace smelting; in each charging process, a direct reduction iron raw material is firstly put into an electric furnace molten pool, then scrap steel is put into the electric furnace molten pool to press the direct reduction iron into the molten pool, lime is added after the direct reduction iron is completely molten, and then charging is continued; and S4, after melting in the electric furnace molten pool is completed, blowing oxygen to stir the molten pool for continuous smelting until carbon in the molten steel reaches the standard. The melting efficiency of the direct reduction iron can be improved, and the power consumption cost is reduced.

The invention belongs to the technical field of ferrous metallurgy, and relates to a blowing oxygen lance nozzle for improving the steel scrap ratio of a converter and a blowing process. The main jet flow hole is formed in the bottom, the secondary combustion auxiliary holes are formed in the side wall, the secondary combustion auxiliary holes adopt the diverging pipe design mode, the secondary combustion oxygen flow outlet speed is reduced, interference to main oxygen jet flow caused by too high outlet speed is avoided, the secondary combustion efficiency is enhanced, meanwhile, the main oxygen jet flow is blown in through jetting gas in a rotational flow mode, and the secondary combustion efficiency is improved. The blowing stirring condition is improved, the stirring strength of the molten pool is enhanced, the heat and mass transfer process between the molten pool and the scrap steel is enhanced, the melting speed of the scrap steel is increased, and the uniform mixing time of the molten pool is shortened.

The invention discloses an intensified heat supply system based on a cascade heat storage device, and belongs to the technical field of domestic heat supply systems, the intensified heat supply system comprises a phase change heat storage device and a water tank which are arranged indoors, and a solar heat collector arranged outdoors, and the solar heat collector is communicated with the two ends of a heat charging pipe of the phase change heat storage device through pipelines respectively; the water tank is respectively communicated with heat release pipes of the phase change heat storage device through pipelines; the heat charging pipe is of an approximate heart-shaped structure; the water tank is communicated with a domestic water inlet and a heat user side outlet, and an auxiliary electric heating device is arranged in the water tank. The enhanced heat supply system based on the cascade heat storage device is simple in structure, high in solar energy utilization rate and capable of guaranteeing efficient hot water supply under different weather conditions.

A direct-cast fast-melting high-viscoelastic anti-fatigue asphalt modifier and its preparation method and application belong to the technical field of new road materials. The raw materials of the direct-cast fast-melting high-viscoelastic anti-fatigue asphalt modifier include the following components in parts by mass: 40-60 parts of elastomer, 15-30 parts of blocked isocyanate and blocked polyurethane prepolymer, 10-20 parts of plasticizer and 10-20 parts of low-grade asphalt, which are prepared by open-type banburying mixing and twin-screw melt blending and granulation. The fast-melting high-viscoelastic anti-fatigue asphalt modifier provided by the present invention has the characteristics of fast direct-cast melting speed, high viscosity and high elasticity, high fatigue resistance, and high and low temperature performance. It is suitable for application fields such as high-toughness ultra-thin overlays, high modulus anti-fatigue asphalt pavements, and semi-flexible pavements.

The invention belongs to the technical field of steel casting smelting, and particularly relates to a smelting method of martensitic stainless steel, which adopts an EAF + LF + VOD smelting process and comprises the following specific steps: material preparation: feeding a furnace material by using martensitic return scrap of the same material, and removing various impurities on the surface of the return scrap; adding lime, ferrosilicon, carbon powder and fluorite in set amount; smelting in an EAF furnace: pre-blowing oxygen after the furnace temperature reaches 1570-1600 DEG C, and then blowing oxygen in batches; smelting in an LF furnace: controlling the element C to be 0.3 to 0.4 percent, the element Cr to be 12 to 12.5 percent, the element Ni to be 4 to 4.2 percent, the element Mo to be 0.45 to 0.55 percent and the element S to be below 0.005 percent; smelting in a VOD furnace: controlling the oxygen blowing vacuum degree to be 6000-8000Pa, controlling the oxygen flow to be 500-800Nm < 3 > / h, and starting to blow oxygen; by adopting the method disclosed by the invention, not only can the requirements of technical specifications be met, but also the problem of overstock of furnace charges (return charges) faced by enterprises can be solved.

The invention relates to the field of alloy processing, and particularly discloses a high-temperature alloy vacuum induction melting process and equipment, the high-temperature alloy vacuum induction melting equipment comprises a loading cylinder and a melting cylinder, the melting cylinder is detachably inserted in the loading cylinder, and a cylindrical electric heating wire heating layer and a cylindrical heat preservation layer are further mounted in the loading cylinder from inside to outside; and the smelting cylinder is sleeved with the electric heating wire heating layer, and a cleaning mechanism capable of moving up and down is installed in the smelting cylinder. The high-temperature alloy vacuum induction melting technology and equipment are convenient and fast to use, small in occupied space, easy to operate, high in safety performance in use, capable of being operated by a single person independently and suitable for being used by workers in a small range in the small-scale part machining process. The use cost is low, and different working requirements can be met.

The utility model belongs to the technical field of glue preparation devices, and particularly relates to a glue stirring device with a heating assembly. Comprising a barrel body which is provided with a heating layer; a stirring mechanism; the multiple heating assemblies are arranged on the side wall of the barrel body and located below the stirring mechanism; wherein the heating assembly comprises a heating plate arranged in the barrel body, a connecting pipe connected to the heating plate and a water outlet pipe inserted into the connecting pipe, the connecting pipe is arranged on the side wall of the barrel body and extends to the outer side of the barrel body, and a containing cavity communicated with the connecting pipe is formed in the heating plate; a water inlet communicated with the annular cavity is formed in one end, positioned on the outer side of the barrel body, of the connecting pipe; a water outlet is formed in the water outlet pipe; the mixing effect is improved through interaction of the stirring mechanism and the multiple heating plate assemblies, the glue raw materials are heated through the heating layer and the heating assemblies, the heating area is further increased through the heating assemblies, and the melting speed of the glue raw materials is increased.

This invention discloses a high-speed electroslag remelting apparatus and remelting method, belonging to the field of electroslag metallurgical technology. The electroslag remelting apparatus of this invention includes a magnetic field generating and moving device, a metal consumable electrode and its blowing system, an ultrasonic generator, and a crystallizer. During the remelting process, argon gas is introduced through pores in the core of the metal consumable electrode. Ultrasonic treatment affects the vibration of the metal consumable electrode. Under the combined effect of these two factors, the formation and dripping of droplets at the end of the consumable electrode can be accelerated. Simultaneously, by setting up the magnetic field generating device, the electromagnetic force generated by the magnetic field and the remelting current ensures that the droplets drip evenly onto the molten metal pool, rather than the core. The remelting method adopted by the remelting apparatus of this invention accelerates the remelting speed without reducing the solidification quality of the remelted ingot, which is beneficial for improving production efficiency and reducing energy consumption per ton of steel.

The invention discloses an injection molding device for processing the plastic shell of an air flow meter, and the invention relates to the technical field of injection molding devices, including a composite mechanism. The injection molding device for processing the plastic shell of an air flow meter, through the composite mechanism design, the plastic raw material enters the inside of the composite shell from the feed port, the motor rotates the rotating shaft, and the rotation of the rotating shaft rotates the rotating frame and the rotating plate, thereby achieving the effect of expanding the stirring range, improving the mixing effect, thereby ensuring the stability and consistency of the quality of the injection molded product, and cutting the plastic raw material through the cutting block, thereby achieving the effect of dividing larger raw materials, making the plastic raw material particles uniform, and uniform raw material stirring can reduce the unstable factors in the production process, reduce the scrap rate, thereby improving the efficiency and economic benefits of injection molding production, and then falling downward from the holes on the surface of the support plate, and the raw material is output to the inside of the processing mechanism through the output mechanism, which is convenient for subsequent processing.

The utility model discloses high-temperature solid full-melting heating equipment, which belongs to the technical field of solid melting and comprises a barrel body, a heating tank is mounted on the inner side of the barrel body, a cover plate is arranged above the barrel body, and a heating wire is mounted at the bottom of the inner wall of the barrel body; the high-temperature solid full-melting heating equipment is characterized in that a circulating pump is installed below the barrel body, the two ends of the circulating pump are fixedly connected with the two sides of the barrel body through circulating pipes, a water temperature controller is connected to the lower portion of the right side of the barrel body through bolts, and the water temperature controller is connected with the heating wire through a wire. According to the high-temperature solid full-melting heating equipment, the circulating pump is additionally arranged to be linked with the water temperature controller, water is automatically controlled to flow after the water temperature reaches the full-melting temperature, then the melting speed of solids is increased through circulation of hot water, the stirring rod is driven by the motor to rotate, the solids in the heating tank are stirred through the stirring rod, and the stirring effect is improved. Therefore, the solid is uniformly heated, and the melting speed of the solid is further accelerated.

The invention discloses a preparation method of an Al-RE intermediate alloy based on an alloy opposite doping method, which comprises the following steps: firstly, industrial pure aluminum Al and mother alloy Al-90RE are taken as raw materials, the raw materials are dried according to a mass ratio meeting the requirement of Al-(10-50) RE, then, the raw materials are melted by adopting a two-stage variable-temperature melting method to obtain an Al-RE melt, then, the Al-(10-50) RE melt is refined, and meanwhile, the Al-RE intermediate alloy is prepared by adopting an alloy opposite doping method. The steel ingot mold is preheated, and finally, the refined Al-RE melt is poured into the preheated steel ingot mold to be cooled, so that an Al-RE intermediate alloy ingot based on the alloy opposite doping method is obtained; rE is one of La, Ce or La + Ce alloy. The obtained Al-RE intermediate alloy is compact in metallographic structure and less in inclusion; in addition, the yield is greater than 90.0%.

The invention relates to the technical field of steel smelting, in particular to casting powder special for high-aluminum steel and application of the casting powder, and the casting powder contains BaO, Li2O, B2O3, CaO, SiO2, Al2O3, MgO, R2O and C; wherein the mass fraction of the BaO is 0.4%; the mass fraction of the Li2O is 2.5%; the mass fraction of the B2O3 is 0.6%; the mass fraction of the CaO is 20%; the mass fraction of the SiO2 is 38%; the mass fraction of Al2O3 is 3%; the mass fraction of MgO is 2%; the mass fraction of the R2O is 10%; the R2O is Na2O and / or K2O. According to the casting powder, by optimizing the chemical components of the casting powder and adjusting the physical properties of the casting powder, the casting powder has the low alkalinity of 0.5-0.6, the high F <-> content of 7%-8% in mass fraction of F <->, the low melting temperature, the melting point of 900-950 DEG C and the high viscosity, the viscosity of the casting powder is 0.30-0.40 Pa.s at the temperature of 1300 DEG C, and the casting powder can be used for casting powder casting. Through improvement of the performance, a series of problems caused by high aluminum content in the production process of the high-aluminum steel are solved, so that the casting powder can better meet the continuous casting requirement of the high-aluminum steel, and powerful technical support is provided for large-scale and high-quality production of the high-aluminum steel.

The utility model discloses a glass kiln feeding pool flame blocking device which comprises a flame blocking brick assembly used for blocking a feeding port, the flame blocking brick assembly comprises a plurality of zero-expansion silica bricks capable of being assembled and disassembled in the vertical direction, and the zero-expansion silica bricks are sequentially connected in a clamped mode. The two ends of each zero-expansion silica brick are each vertically provided with a first protruding block and a first groove, the first protruding blocks are matched with the first grooves in size, and the first grooves of the zero-expansion silica bricks are connected with the first protruding blocks of the adjacent zero-expansion silica bricks in a clamped mode. According to the utility model, the zero-expansion silica brick can not be eroded in a high-temperature environment and is long in service life; the device is not of a water cooling type, and compared with a traditional flame blocking water drum, the temperature of a feeding pool can be increased, the melting speed of batch is increased, the forming time of molten glass is shortened, and therefore the production efficiency is improved; in addition, the plurality of zero-expansion silica bricks can be independently and vertically mounted and dismounted, so that subsequent maintenance and replacement are facilitated, the working condition of the glass kiln is not influenced, and the adjustability is high.

The invention provides a refining device of crude isophthalonitrile / terephthalonitrile, the refining device comprises a dissolving kettle, a filter and a melting kettle which are connected in sequence, based on azeotropy of a solvent and water, water can be removed in the dissolving kettle or the melting kettle, isophthalonitrile / terephthalonitrile after insoluble substance filtering can be heated in a graded manner in the melting kettle, and the crude isophthalonitrile / terephthalonitrile can be refined into crude isophthalonitrile / terephthalonitrile. The method comprises the following steps: recovering a solvent, completely melting m-phthalonitrile / p-phthalonitrile, and conveying the m-phthalonitrile / p-phthalonitrile to a rectification system. According to the refining device disclosed by the invention, moisture and insoluble substances in the m-phthalonitrile / p-phthalonitrile crude product are removed before rectification, so that the main content loss of the m-phthalonitrile / p-phthalonitrile crude product in the melting and rectification processes is avoided, the yield of m-phthalonitrile / p-phthalonitrile is increased, the slag discharge amount is reduced, the material yield is increased, a rectification system runs more smoothly, and the product quality is improved. The environment-friendly benefit is obvious, and the economic benefit is higher.

The utility model provides a PE pipe extruder with a preheating mechanism, and relates to the technical field of PE pipe extrusion. The PE pipe extruder with the preheating mechanism comprises an extrusion molding barrel and a machine body used for supporting the extrusion molding barrel, and further comprises a preheating screw rod located in the extrusion molding barrel, and the preheating screw rod is externally connected with a transmission mechanism; the preheating screw rod comprises a screw rod body internally provided with a cavity, and a heating piece is arranged in the screw rod body. According to the PE pipe extruder with the preheating mechanism disclosed by the utility model, the screw body is heated through the heating piece, so that a heating source for plastic melting is not limited to heat transfer from an extrusion molding barrel (equivalent to an outer layer of molten plastic), but is based on synchronous internal and external heating of the extrusion molding barrel and the preheating screw (equivalent to an inner layer of the molten plastic); plastic raw materials can reach a required melting point as far as possible before entering an extruder, so that subsequent materials are fully melted, the heating is more uniform, and the melting speed is higher.

The invention discloses a discharge aiding agent for oil well fracturing and a production method, and relates to the technical field of production of discharge aiding agents. Comprising the following components in parts by weight: 80-95 parts of a basic solution, 0.3-0.9 part of a viscosity modifier, 3-5 parts of a cracking agent, 0.2-0.5 part of a modified dispersant, 6-8 parts of a diethylenetriamine cross-linking agent, 1-3 parts of an acidifying agent, 0.3-0.6 part of a protective agent and 10-30 parts of a modified filler prefabricated solution, the modified dispersant is a lignin modifier obtained by sulfonating and modifying lignin with potassium bisulfite; the modified filler prefabricated liquid is prepared by coating and modifying quartz sand with polytetrafluoroethylene and acrylic resin; the quartz sand is coated with polytetrafluoroethylene and acrylic resin to form a double-layer coating structure with a firm inner layer and a flowing outer layer, so that the mechanical strength, the stability and the high-temperature resistance of the discharge aiding agent are enhanced, and the discharge rate and the discharge aiding rate of the discharge aiding agent are improved.

The present application relates to a bearing steel pipe production process, which includes the following steps: S1, cutting, cutting a rod into a plurality of tube blanks of equal length; S2, heating; S3, salting, salting the surface of the tube blank after heating in S2; S4, perforation; S5, annealing; S6, cold rolling; S7, stress relief annealing; S8, pickling; S9, cold drawing; S10, spheroidizing annealing; S11, straightening; S111, flaw detection; S12, marking; S13, storage. The present application can reduce the friction between the tube blank and the guide plate during perforation, and has the effect of reducing the possible wear on the surface of the tube blank.

The utility model relates to a detection device, in particular to a detection device for phenolic resin production. Comprising a detection table, iron stands, test tubes, a collection frame, a supporting frame and the like, the detection table is in the shape of two cylinders, the collection frame is fixedly connected to the left side of the top of the detection table, the iron stands are arranged on the top of the collection frame and the right side of the top of the detection table, and the test tubes are arranged in the two iron stands in a sleeved mode; and the support frame is mounted at the top of the detection table. A worker rotates the knob anticlockwise to enable the screw rod to move downwards, then the screw rod drives the thermometer to move downwards, the thermometer is inserted into phenolic resin in a test tube, and then the temperature of the phenolic resin in the test tube is detected, so that the worker is replaced to hold the thermometer to measure the temperature, and the worker is prevented from being scalded due to high temperature of the test tube; and the potential safety hazard that mercury is splashed on the skin of a worker due to the breakage of the thermometer is also avoided.

The utility model belongs to the technical field of aluminum alloy casting, and particularly relates to an aluminum alloy melting furnace which comprises a melting furnace body and a protection plate arranged on the surface of the melting furnace body and further comprises a feeding assembly arranged on the surface of the protection plate. The feeding assembly comprises a feeding pipe, a funnel, a motor, an L-shaped plate, a transmission rod, a first synchronous wheel, a synchronous belt and a second synchronous wheel, the feeding pipe is arranged above the protection plate, the funnel is fixedly connected to an opening in the upper surface of the feeding pipe, the L-shaped plate is fixedly connected to the surface of the feeding pipe, the motor is installed on the surface of the L-shaped plate, and the transmission rod is fixedly connected to the transmission rod. The end part of an output shaft of the motor is fixedly connected with the transmission rod; materials can be automatically put into the melting furnace, potential safety hazards of workers in the machining process are reduced, aluminum alloy can be cut, the reaction area is increased, and therefore the melting speed is increased.

The invention provides a refining method of an m / p-phthalonitrile crude product, which comprises the following steps: mixing and completely dissolving the m / p-phthalonitrile crude product and a solvent which is azeotropic with water, removing moisture through azeotropy of the solvent and the water, removing insoluble substances through filtration, and further recovering the solvent at first based on graded temperature rise and then recovering the solvent at second based on graded temperature rise. And completely melting the m-phthalonitrile / p-phthalonitrile and conveying the m-phthalonitrile / p-phthalonitrile to a rectification system. According to the refining method disclosed by the invention, moisture and insoluble substances in the m-phthalonitrile / p-phthalonitrile crude product are removed before rectification, so that the main content loss of the m-phthalonitrile / p-phthalonitrile crude product in the melting and rectification processes is avoided, the yield of m-phthalonitrile / p-phthalonitrile is increased, the slag discharge amount is reduced, the material yield is increased, a rectification system runs more smoothly, and the product quality is improved. The environment-friendly benefit is obvious, and the economic benefit is higher.

The utility model belongs to the technical field of casting powder liquefaction pouring in a continuous casting steelmaking link, and relates to an on-line treatment device for directly heating and melting continuous casting powder, which comprises a high-temperature melting chamber, a plasma spray gun, a casting powder bin, a replaceable flame blocking base plate and a fan. The high-temperature melting chamber is a hollow cavity, and a gradually-expanding pouring outlet is formed in the bottom of the high-temperature melting chamber. And the plasma spray gun is horizontally mounted on one side wall. The casting powder bin is arranged at the top, and a flow adjusting valve is arranged at the bottom. The replaceable flame blocking base plate is vertically inserted through the top wide seam, the plate face is perpendicular to the jet flow direction, and the lower portion is a U-shaped flow guide face. The fan is connected to the upper right portion of the pouring outlet so as to maintain micro-negative pressure. The plasma jet flow is adopted to directly impact and heat solid slag powder, U-shaped baffle flow guide, micro-negative pressure drainage and divergent outlet flow stabilization are matched, rapid and uniform melting and accurate and stable pouring of casting powder are achieved, equipment is compact, control is sensitive, and the device is particularly suitable for high-quality steel continuous casting production.

The present invention relates to the technical field of pipeline material production, and in particular to a heat-insulating HDPE pipeline material and production equipment. Technical problem: HDPE pipelines are prone to generate static electricity, which may cause the inner wall of the pipeline to absorb particles or powders in the liquid, affecting the material transportation efficiency. The production steps of the heat-insulating HDPE pipeline are as follows: Step 1: Put high-density polyethylene resin, antioxidant, UV stabilizer, pigment, lubricant and flame retardant into a stirring kettle and stir until mixed; Step 2: Put the mixed material into an extruder, further stir and melt the material through the extruder, and then extrude to form an HDPE pipeline and cool it; Step 3: Use an adhesive to bond the polyurethane insulation layer to the outer protective layer of the HDPE pipeline in step 2. The present invention reduces the surface resistivity of the HDPE pipeline and accelerates the dissipation of static charge by adding an antistatic agent to the middle of the high-density polyethylene resin, thereby effectively preventing the accumulation of static electricity and the occurrence of static electricity discharge.

A composite wax melting and stirring system comprises a wax melting device and a stirring tank, the wax melting device comprises a heat conduction stirring shaft (1), a crushing shell (2) and a wax melting shell (3), a wax raw material inlet (4) is formed in the top of the crushing shell (2), a molten wax outlet (5) is formed in the bottom of the discharging end of the wax melting shell (3), and a discharging port in one end of the crushing shell (2) is in flange sealing connection with a feeding port in one end of the wax melting shell (3); the device has the advantages that internal and external heating is performed simultaneously, the wax raw material melting speed is high, the wax raw material is crushed during feeding, and large wax raw materials are prevented from being completely melted. The mixing speed of the wax liquid and the additive is high, the additive is integrated in one burdening pipeline for feeding, and the integrity of the feeding pipeline is good.

A wax melting device comprises a heat conduction stirring shaft (1), a crushing shell (2) and a wax melting shell (3), a wax raw material inlet (4) is formed in the top of the crushing shell (2), a molten wax outlet (5) is formed in the bottom of the discharging end of the wax melting shell (3), a discharging port in one end of the crushing shell (2) is in flange sealing connection with a feeding port in one end of the wax melting shell (3), and the heat conduction stirring shaft (1) is installed in the crushing shell (2) and the wax melting shell (3); the device has the advantages that internal and external heating is performed simultaneously, the wax raw material melting speed is high, the wax raw material is crushed during feeding, and large wax raw materials are prevented from being completely melted.

The invention provides an impurity cleaning device for recycling waste animal and vegetable oil, and belongs to the field of impurity cleaning of waste animal and vegetable oil. A cleaning mechanism is arranged in a tank body and used for rapid melting and multiple filtering of oil, and a sealing assembly is arranged above the tank body and used for reducing heat loss in the tank body; a filtering assembly is arranged on the sealing assembly and is used for adsorbing and filtering grease steam; by arranging the cleaning mechanism, an electromagnetic coil can enable the temperature in the tank body to rise during use, so that the melting speed of grease is increased, the molten grease sequentially passes through a first filter screen, a second filter screen and a third filter screen, and the mesh numbers of the first filter screen, the second filter screen and the third filter screen are sequentially increased, so that the grease is filtered for three times; and the cleanliness of the grease is greatly improved.

The invention provides a biomass oxygen lance and an electric arc furnace, relates to the technical field of metallurgical equipment, and aims at solving the problem that a large amount of carbon is discharged due to the fact that oil oxygen and gas burners are used for fluxing waste steel at the present stage to a certain extent. The invention provides a biomass oxygen lance. The biomass oxygen lance comprises a central pipe, a rotational flow blade and a circular seam sleeve assembly, the central pipe, the rotational flow blade and the circular seam sleeve assembly are sequentially and coaxially arranged in a sleeving mode from inside to outside, a containing cavity is formed in the circular seam sleeve assembly, the central pipe is arranged in the containing cavity, and the rotational flow blade surrounds the outer wall of the central pipe, so that a rotational flow gas channel is formed between the central pipe and the circular seam sleeve assembly; a premixing channel is formed in the position, corresponding to the circular seam sleeve assembly, of the outlet end of the center pipe, and the rotational flow gas channel is communicated with the premixing channel.

A waste aluminum forming device relates to the field of waste aluminum burn loss measurement technology. It comprises a worktable, support legs, a telescopic device, a crossbeam, an extrusion cylinder, a base plate, a connecting column, and a pressure head. The worktable has an opening, and the support legs support its bottom. The telescopic device is vertically installed at both ends of the worktable, driving the crossbeam to move up and down. The extrusion cylinder is located at the opening and connected to the telescopic device, with a movable base plate sealing its bottom from the worktable. The pressure head is installed at the lower end of the crossbeam via the connecting column, coaxially with the extrusion cylinder to extrude and form the waste aluminum. This invention achieves smooth material discharge after forming through the opening and movable base plate, avoiding blockages and improving continuous operation capability. Coaxial extrusion ensures uniform pressure, forming high-density, regular cylindrical blocks, which is beneficial for burn loss rate experiments, reduces crucible operation frequency, shortens feeding time, reduces heat loss, stabilizes furnace temperature, accelerates melting, and improves experimental accuracy and repeatability.

The invention relates to the field of high-voltage switch cabinets, in particular to a high-voltage switch cabinet with a fault detection function, which comprises a cabinet body, a fault detection device is mounted in the cabinet body, a shielding frame is fixedly mounted on the top side of the cabinet body along the edge, a plurality of mounting cylinders are fixedly mounted on the top side of the cabinet body, and the mounting cylinders are communicated with the interior of the cabinet body. A nylon sleeve is arranged in the mounting cylinder in a threaded penetrating mode, a shielding plate is arranged at the top end of the nylon sleeve, a plurality of limiting plates are installed on the bottom face of the shielding plate, the multiple limiting plates are arranged around the center shaft of the mounting cylinder at intervals, the limiting plates are fixedly connected with the inner wall of the nylon sleeve, and first limiting blocks are fixedly installed on the bottom sides of the limiting plates. The first limiting block is located in the cabinet body and used for abutting against the inner top wall of the cabinet body. The high-voltage switch cabinet has the effect of improving the safety of the high-voltage switch cabinet during pressure relief.

The invention relates to the technical field of crushing equipment, and particularly discloses a rubber asphalt preparation device which comprises a preparation cylinder with an inlet and an outlet, a heating plate arranged at the bottom in the preparation cylinder, and a preparation mechanism arranged in the preparation cylinder, the preparation mechanism comprises a rotating shaft, a screening plate, a discharging disc, a plurality of cutters arranged in the circumferential direction of the rotating shaft at equal intervals, a through hole formed in the discharging disc and a driving assembly used for driving the rotating shaft to rotate. The rotating shaft is rotationally connected with the preparation cylinder; the screening plate is connected with the preparation cylinder; the discharging disc is fixedly connected with the rotating shaft, located below the screening plate and attached to the screening plate. The cutter is fixedly connected with the rotating shaft and located above the screening plate. The problem that rubber asphalt cannot be quantitatively discharged through an existing preparation device is solved.