102 results about "Dry grinding" patented technology

The utility model relates to the technical field of dry grinding and dry separation of iron ore and similar processes, and particularly discloses a dry grinding and dry separation system which comprises an incoming material conveying system, a roller mill, a dynamic powder concentrator, a dry classification cabin and a fine powder collecting and conveying system. A discharging hole of the supplied material conveying system is communicated with a feeding hole of the roller mill; a discharging hole of the roller mill is communicated with a feeding hole of the dynamic powder concentrator; a coarse particle material outlet of the dynamic powder concentrator is communicated with a material inlet of the dry type grading cabin; an oversize coarse particle discharging opening of the dry type grading cabin is communicated with a feeding opening of the roller mill; and a fine powder discharge hole of the dynamic powder concentrator is communicated with the fine powder collecting and conveying system. Finished product materials with various particle sizes can be provided, and the requirements of customers for different finished product particle sizes are met; fine powder screened by the dynamic powder concentrator is collected by a dust collector and then is directly conveyed to a tailing discarding procedure, so that the handling capacity of the dry classification cabin is reduced; the use condition of the dry-type grading cabin is optimized, and the system flow is simplified.

The invention relates to the technical field of phosphorus chemical industry solid waste resource utilization, and particularly discloses a liquid triisopropanolamine feeding device for phosphorus slag micro powder dry grinding production, which comprises a liquid storage assembly, a metering conveying mechanism, a preheating mixing mechanism, a dry grinding machine butt joint assembly and an intelligent regulation and control module. The liquid storage assembly stores materials under the protection of nitrogen and at a constant temperature; the metering conveying mechanism achieves constant-temperature and accurate metering conveying of materials through a variable-frequency plunger pump, an electromagnetic flowmeter and a pipeline with a heat preservation heat tracing function. The preheating mixing mechanism atomizes liquid triisopropanolamine through an atomizing nozzle, and the liquid triisopropanolamine and phosphorus slag raw materials are forcibly mixed to be uniform in a heating cavity through a stirring assembly. The dry mill butt-joint assembly realizes sealed conveying of the mixed materials to the dry mill; and the intelligent regulation and control module is connected with and cooperatively controls each component. The problems of large metering error, high volatilization loss, non-uniform mixing and easy blockage in the prior art are solved, and the phosphorus slag grinding efficiency, the product quality and the system operation continuity are remarkably improved.

The invention relates to a high-temperature alloy-Ti (C, N) composite metal ceramic material and a preparation method thereof, and belongs to the technical field of metallurgy. The preparation method comprises the following steps that S1, high-temperature alloy powder and Ti (C, N) ceramic powder are subjected to dry grinding, ultrasonic dispersion, wet grinding and drying, and metal ceramic powder is obtained; and S2, the metal ceramic powder is subjected to two-way pressing, vacuum sintering and cooling, and the high-temperature alloy-Ti (C, N) composite metal ceramic material is obtained. The high-temperature alloy-Ti (C, N) composite metal ceramic material prepared by the method has excellent high hardness, obdurability and high-temperature resistance, has outstanding room-temperature and high-temperature mechanical properties, and can meet the strict requirements of extreme working conditions and high-speed cutting on the comprehensive properties of the material.

The utility model discloses a mechanical shaft seal self-flushing circulating cooling structure and a compressor comprising the mechanical shaft seal self-flushing circulating cooling structure, the mechanical shaft seal self-flushing circulating cooling structure comprises an oil separator, a cooling pipeline, an adapter, a mechanical seal sealing cavity and a U-shaped pipeline, the adapter is located at the top of the mechanical seal sealing cavity, and the U-shaped pipeline is located at the bottom of the mechanical seal sealing cavity. The two ends of the cooling pipeline are connected to the oil distributor and the adapter respectively and communicate with the oil distributor and the adapter, and the two ends of the U-shaped pipeline are connected to the adapter and the bottom of the mechanical seal sealing cavity respectively and communicate with the adapter and the mechanical seal sealing cavity. According to the sealing structure, solid particles can be prevented from being accumulated on the sealing surface, cooling liquid stays in the sealing cavity through self weight under the condition that the whole system is stopped, timely lubrication is brought to next starting, and a sealing material is prevented from being degraded due to dry grinding and overheating; and meanwhile, the operation flexibility is improved, and the cost is reduced.

1. Name of the designed product: automatic grinder (dry grinding type). 2. Use of the designed product: grinding of blades. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view. 5. The bottom surface of the designed product is the part that is not easy to see or cannot be seen during use, and the top view is omitted.

The invention provides a fault identification and processing method and control system for a high-pressure pump, and the method comprises the steps: a sensor assembly obtains the operation information of the high-pressure pump, and transmits the operation information to an MCU; the MCU determines the operation state of the high-pressure pump according to the operation information; wherein the operation state comprises a normal state, a no-load state, a bubble state and a blocking state; the MCU sends a normal instruction or a control instruction to the ECU according to the running state; and the ECU limits the operation of the high-pressure pump or controls the high-pressure pump to stop according to the control instruction. Dry grinding and high heat of the motor in a liquid-free cooling state are avoided, the temperature rise of the motor is effectively controlled, insulation aging or coil burning is avoided, and the service life of the motor is remarkably prolonged.

This invention provides a method for producing fine polyolefin powder in micrometer units, characterized by uniform particle shape, average particle size, and particle size distribution. [Solution] This invention relates to a method for producing polyolefin ultrafine powder and the polyolefin ultrafine powder produced thereby. Specifically, the method involves mixing and heating a polyolefin resin with a xylene mixed solvent to produce a polyolefin molten liquid, then cooling and crystallizing it, and then ultrafine grinding the crystallized reactant through a vacuum wet grinding step and a dry grinding step, in which wet grinding and drying are performed simultaneously with the solvent, thereby providing an ultrafine polyolefin powder with an average particle size of approximately 30 μm or less. A xylene mixed solvent is used as the mixed solvent for melting the polyolefin resin, and the ultrafine polyolefin powder produced thereby can be applied to general-purpose material fields such as construction, civil engineering, and chemical products, and has physical properties that are particularly advantageous for the manufacture of secondary battery electrodes.

The invention discloses a nitrogen-doped carbon catalyst based on weathered coal humic acid as well as a preparation method and application of the nitrogen-doped carbon catalyst. According to the method, weathered coal humic acid is used as a carbon precursor, the carbon precursor and a specific nitrogen source are mechanically ground and mixed according to the equal nitrogen proportion, and the nitrogen-doped carbon catalyst is prepared after high-temperature calcination and acid pickling. The catalyst is used for activating peroxymonosulfate (PMS) to degrade tetracycline, and under the conditions that the dosage of the catalyst is 0.2 g / L and the concentration of the PMS is 1.0 mM, the degradation rate of 20mg / L tetracycline in 30 minutes exceeds 85%. The synergistic effect of inherent trace iron in humic acid and an external nitrogen source is utilized, and high-activity sites are formed in situ in the pyrolysis process; dry grinding is adopted in the process, additional metal sources and solvents are not needed, low-cost and environment-friendly preparation of the efficient heterogeneous catalyst from waste resources is achieved, and a new material is provided for degradation of organic pollutants.

The present application relates to a kind of centrifugal compressor, including shell, rotor, inner magnetic ring and outer magnetic ring, the rotor is arranged in the shell, the inner magnetic ring is arranged on the rotor, the outer magnetic ring is arranged on the shell, the outer magnetic ring is sleeved on the inner magnetic ring and with the inner magnetic ring in the radial direction of the rotor with gap, the inner circumferential surface of the outer magnetic ring and the outer circumferential surface of the inner magnetic ring on pole opposite.The centrifugal compressor of the present application, when the rotor bears external axial force, the axial force received by the rotor is balanced by the magnetic attraction force between the inner magnetic ring and the outer magnetic ring, at least part of the axial force acting on the rotor is cancelled, to avoid dry grinding of the gas floating thrust bearing on the rotor, reduce the heating condition of the gas floating thrust bearing, ensure the stability of the rotor under different working conditions of centrifugal compressor.

1. Name of the designed product: Dry grinder. 2. Use of the designed product: Appliance for grinding. 3. Design points of the designed product: Combination of shape and color. 4. Picture or photograph best indicating the design points: Perspective view. 5. The designed product contains color.

The invention discloses high-strength, high-hardness and corrosion-resistant 304 stainless steel and a preparation method thereof, and belongs to the technical field of metal material preparation. The method comprises the following steps: carrying out ball milling on ZrC powder and 304 stainless steel powder in different shape proportions in a planetary ball mill; according to the sequence of first dry grinding and then wet grinding, ball-milling is carried out in a specific time and in a ball-to-material ratio range according to the proportion of large balls to medium balls being 4: 3: 3 and the proportion of 3: 3: 4 respectively, and fine and evenly-mixed alloy powder is obtained; and reducing initial thermal stress by adopting a spark plasma sintering technology and a multi-temperature gradient and pressure rising strategy, and subsequently completing rapid densification and inhibiting interface reaction to prepare the ZrC-304 stainless steel powder. Compared with the prior art, the 304 stainless steel has the beneficial effects that the mechanical property of the 304 stainless steel is remarkably improved, the highest tensile strength can reach 880 Mpa, the highest Rockwell hardness can reach 35.8 HRC, and the corrosion resistance is improved; after ZrC is added, grains and a second phase of the 304 stainless steel are obviously refined, and the second phase is uniformly distributed.

The invention discloses a sample grinding scrap iron rapid recovery processing device and method for spectrum detection sample preparation, and belongs to the technical field of belt type grinding and dry grinding, and the sample grinding scrap iron rapid recovery processing device comprises a scrap suction cover arranged in a contact area of an abrasive belt and a workpiece; an inlet of the flow guide pipeline is communicated with an outlet of the scrap suction cover; an inlet of the grading and separating unit is communicated with an outlet of the flow guide pipeline, and the grading and separating unit is used for carrying out primary separation and particle size grading on the mixture flow to obtain a coarse particle component mainly containing scrap iron and a fine particle component mainly containing dust / abrasive particles; an inlet of the high-gradient magnetic separation unit is communicated with a coarse grain component outlet of the grading separation unit to obtain iron scrap enrichment and non-magnetic or weakly magnetic tailings, and the iron scrap enrichment and the non-magnetic or weakly magnetic tailings are subjected to bin separation closed collection; an inlet of the light impurity removing unit is communicated with a fine particle component outlet of the grading and separating unit, light impurities and dust / abrasive particle impurities are separated, and the light impurities and the dust / abrasive particle impurities are collected in a separated-bin closed mode.

The invention discloses a system and method for reducing the circulating load capacity of a refractory iron ore dry-method pulverizing system, and belongs to the technical field of mineral processing engineering. In order to solve the problems that in the dry-method powder making process of refractory iron ore, due to circulation accumulation of refractory minerals in the system, the load is increased, and a dynamic powder concentrator is prone to swelling, a parallel auxiliary powder grinding subsystem is additionally arranged on the basis of an original system. According to the system, an electric bar valve and a branch pipe are additionally arranged on a coarse-fraction discharge pipe of a dynamic powder concentrator, sorted coarse-fraction materials (0-5 mm) difficult to grind are shunted to a second surge bin, and then are specially ground by second powder making equipment until the qualified fineness that the content of-74 microns is 50% + / -5% is achieved. After being collected by a second cyclone separator, the ground product is conveyed back to the main system by a second air cushion type conveyor; the dusty gas is recycled through the second circulating fan part, and the rest of the dusty gas is connected into the original dust removal system. When the circulation load of the main system exceeds a set threshold value (such as 80% of a design value), the shunt grinding process is started, and when the load is recovered to a normal range (such as below 50% of the design value), the original process is switched back. The circulating load of the system is effectively reduced, the hidden danger of material accumulation of equipment is avoided, and the operation stability of the system and the adaptability to complex ore are improved.

The utility model provides a device for preventing a pump from dry grinding, which relates to the technical field of pump structures and comprises a pump shaft, a pump shell arranged on the outer surface of the pump shaft, an impeller fixedly connected to the outer surface of the pump shaft through a convex block, and a mechanical seal arranged between the pump shaft and the pump shell. A heat dissipation mechanism for cooling and a lubricating mechanism for preventing dry grinding are respectively arranged in the mechanical seal; the heat dissipation mechanism comprises a water pump, the output end of the water pump fixedly communicates with a liquid inlet pipe, and the liquid inlet pipe penetrates through the interior of the shell and fixedly communicates with a heat dissipation copper pipe. According to the device for preventing the pump from dry grinding, through matched arrangement of the heat dissipation mechanism and the lubricating mechanism, heat generated in a mechanical seal when the pump idles can be dissipated, lubricating oil can be dripped between a movable seal ring and a pump shaft, friction heat is effectively reduced, the trouble of manually disassembling the mechanical seal is omitted, time and labor are saved, and normal operation of the pump is guaranteed.

The invention relates to the technical field of spherical surface grinding, and particularly discloses a spherical surface grinding machine tool for an aluminum alloy flange. The device comprises a machine table, a frame assembly arranged on the peripheral side of the top of the machine table, a composite grinding unit for grinding the inner peripheral face and the outer peripheral face of the aluminum alloy flange, and a spherical surface grinding unit for grinding the spherical surface of the aluminum alloy flange. Firstly, an oil film on a machined surface is broken through the pre-cleaning assembly, loose impurities are removed, and the surface of a base material reaches a clean state; then, the grinding preparation is converted into a continuous grinding material thin film which is controlled in thickness and uniform in distribution from point-shaped or local supply through a spreading assembly; on the basis, the composite grinding assembly removes materials under the compound track of planet rotation and revolution, at the moment, the grinding materials play a cutting and removing role under the stable contact condition, the surface roughness of the workpiece tends to be uniform, and dry grinding, local accumulation or overcutting are reduced.

The invention provides a perlite powder premixing catalysis hydrophobic modification integrated granulation method and application thereof, and belongs to the technical field of inorganic non-metallic material modification. According to the method, efficient hydrophobic modification of perlite particles is achieved through a four-step integrated process of raw material premixing, paste preparation, extrusion granulation and high-temperature catalytic roasting, and the core innovation of the method is that in the high-temperature roasting stage, hydrophobic groups are released through the pyrolysis effect of a catalyst in the particles, a monomolecular hydrophobic membrane is formed from inside to outside, and the hydrophobic performance of the perlite particles is improved. Directional release and uniform distribution of hydrophobic groups are realized, and the hydrophobic groups are tightly combined with internal structures of perlite particles, so that the cost is reduced, and the operation process is simplified; in addition, uniform composite powder is formed through dry grinding, compared with a traditional distribution modification method, intermediate links are reduced through integrated premixing, the modification efficiency is improved, and the method is suitable for direct engineering application in oil-water separation, hazardous chemical substance leakage adsorption, soil remediation or VOCs tail end treatment.

The invention relates to the field of semiconductor materials, in particular to a preparation method of a magnetron sputtering gallium oxide thin film, and provides the following scheme aiming at the problems that a gallium oxide thin film preparation method in the prior art is low in crystallinity, the responsivity and the response speed of a detector are mutually restricted and the dark current is large, the preparation method comprises the following steps: S1, preparing a target material; s2, substrate treatment: ultrasonically cleaning a sapphire substrate, blow-drying the sapphire substrate, and putting the sapphire substrate into a deposition cavity of a magnetron sputtering system; s3, magnetron sputtering is carried out; s4, thin film deposition; s5, annealing treatment; s6, preparing an electrode; s7, coating a film; s8, photoelectric testing; when the target material is prepared, Ga2O3 powder is subjected to wet grinding, first-time sintering, dry grinding, compression molding and second-time sintering, and the Ga2O3 ceramic target material is obtained. Grain orientation preferred growth of the gallium oxide thin film is achieved, the crystallinity is greatly improved, the defect density of the thin film is remarkably reduced, the method is more suitable for solar-blind ultraviolet detection, and compared with thin film preparation technologies such as MOCVD and MBE, the equipment cost is low, and large-scale production is easy.

The invention discloses an impact-resistant aluminum alloy composite material and a preparation method thereof, and relates to the technical field of metal-based composite materials. The aluminum alloy material comprises the following components in percentage by mass: 0.8%-1.5% of carbon nanotubes, 0.3%-0.7% of hexagonal boron nitride, 0.6%-1.0% of Mg, 0.9%-1.3% of Si, 0.1%-0.2% of Mn, 0.2%-0.6% of Cu, 0.1%-0.2% of Zr and the balance of Al. According to the preparation method, an optimized dry grinding method powder metallurgy process is adopted, the spherical aluminum powder is subjected to ball milling to form the lamellas, the carbon nanotubes are mechanically clamped between the lamellas, physical wrapping and mechanical locking can be achieved, and the dispersion effect and the firmness of interface bonding are improved. By introducing carbon nanotubes and hexagonal boron nitride with different dimensions, a multifunctional internal framework is constructed for an aluminum alloy matrix, so that the mechanical property and the conduction function of the aluminum alloy matrix are improved. High-energy ball milling and low-energy ball milling are carried out separately, the integrity of a reinforcement structure is kept, grain boundary dislocation can be effectively prevented, the force transmission and bearing sharing effects are achieved, and the heat conductivity is improved.

The invention discloses a method for recycling and harmlessly treating carbon residues, which comprises the following steps: crushing the carbon residues to 0.3-5mm by using a crusher, carrying out dry grinding to below 150 meshes by using a ball mill, and recycling aluminum blocks by using a screening machine; decyanation and fluorine fixation; separating carbon powder (containing 70-80% of carbon) from the slurry in a flotation machine by adopting a'two-roughing, one-scavenging and two-refining 'process; the tailings are subjected to three-section countercurrent leaching (the pH value of a first leaching tank is 2-3, the pH value of a second leaching tank is 3.5-4.5, and the pH value of a third leaching tank is 4.5-5.5), and filter residues are dried to obtain regenerated electrolyte (the fluorine content is larger than 50%); performing two-stage impurity removal on the leachate in a neutralization impurity removal tank through lime and sodium hydroxide, adding sodium carbonate into the purified liquid in a lithium precipitation tank to precipitate lithium, washing a wet product through a rinsing tank, and drying the wet product through a flash dryer to obtain lithium carbonate (the purity is greater than 98.6%); evaporating the lithium precipitation mother liquor to recover sodium sulfate salt. According to the method, the carbon powder, the lithium carbonate and the electrolyte are synchronously recycled, the lithium recycling rate is larger than 74.35%, the solid waste reduction is larger than 91.71%, and the whole process is closed and free of secondary pollution.

The application provides a composite polysulfide electrolyte film, a preparation method thereof and a solid-state battery, and the preparation method comprises the following steps: mixing a sulfide electrolyte material and a polymer precursor material to perform dry grinding, so as to obtain a sulfide-polymer composite precursor powder; mixing and stirring the sulfide-polymer composite precursor powder and an aprotic organic solvent to obtain a composite polysulfide electrolyte solution; and after film formation of the composite polysulfide electrolyte solution, drying is performed to obtain the composite polysulfide electrolyte film. In the application, the sulfide electrolyte material is introduced into the polymer electrolyte, the two are combined to realize complementary advantages, high conductivity, good interface stability and excellent processing performance are considered, and the long cycle stability of the full solid-state battery can be obviously improved.

The utility model relates to graphite switch rail connecting iron which comprises a back plate, a bottom plate and two side plates, the left end and the right end of the back plate are connected with one ends of the two side plates respectively, and the bottom plate is arranged between the two side plates. An upward boss is arranged at the end, close to the back plate, of the bottom plate, a plurality of mounting holes are formed in the bottom plate, and the mounting holes are used for mounting graphite columns to play a lubricating role. The mounting holes are formed in the bottom plate and used for mounting graphite to play a lubricating role, frictional resistance of the switch rail connecting iron in use is reduced, dry grinding of the switch rail connecting iron and other parts is avoided, abrasion of the switch rail connecting iron is reduced, and the service life of the switch rail connecting iron is prolonged.

The invention discloses an electric submersible screw pump dry grinding and airlock regulation and control method, equipment and a medium, and relates to the technical field of mining equipment fault regulation and control. The method comprises the steps that motor winding temperature data, pump inlet pressure data and unit vibration data in the operation process of the electric submersible screw pump are obtained; extracting a temperature change rate and a pressure fluctuation amplitude according to the motor winding temperature data and the pump inlet pressure data, and extracting an energy value of a preset frequency band in the vibration spectrum according to the unit vibration data; inputting the temperature change rate, the pressure fluctuation amplitude and the energy value of the preset frequency band into a pre-constructed risk identification model, and outputting a risk type; and when the output risk type is a dry grinding risk or an airlock risk, performing a self-adaptive regulation and control sequence. By means of the method, multi-parameter fusion recognition of the dry grinding risk and the air locking risk is achieved, early symptoms of two fault modes can be accurately distinguished, and misjudgment and missed judgment caused by single parameter monitoring are avoided.

The application discloses a reducer with high-speed bearing non-forced lubrication structure and belongs to the technical field of reducers. The reducer solves the defects that the high-speed bearing in the electric drive bridge reducer is prone to insufficient lubrication and further causes dry grinding of the bearing under the condition that only splash lubrication is adopted and an auxiliary oil pump is not added. The reducer mainly comprises a main reducer shell and a three-shaft gear. An axle bearing mounting hole is arranged on the inner wall of the main reducer shell. The three-shaft gear is mounted in the main reducer shell. The axle bearing mounting hole is communicated with an axle bearing oil inlet hole. An oil receiving cover assembly is fixedly mounted on the inner wall of the main reducer shell. The oil receiving cover assembly is in a curved channel structure. The oil receiving cover assembly is provided with a large port and a small port. The large port is downwardly opened and is arranged along the tangential direction of the three-shaft gear. The small port is communicated with the axle bearing oil inlet hole.

1. The name of the design product: dry grinding disc (super cool lightning). 2. The use of the design product: used for grinding and polishing the surface of materials such as concrete, grinding stone, diamond sand and stone. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view. 5. The left view, right view, top view and bottom view have been fully embodied in the submitted views, and the left view, right view, top view and bottom view are omitted.

The application discloses an agglomerated diamond accumulation composite material, a diamond accumulation sand disc and a preparation method thereof, and relates to the technical field of precision grinding and surface treatment of superhard materials. The application performs surface modification on the diamond by using a silane coupling agent, and combines the diamond with a resin bonding agent, and adds inorganic oxides such as zirconium oxide, aluminum oxide and silicon carbide, so that a high-strength diamond composite material is prepared through high-temperature sintering, the compression strength of the composite particles and the interface bonding density are significantly improved, the composite particles are closely arranged and the structure is stable during dry grinding and wet grinding, the self-sharpening property is strong, the composite particles are resistant to high temperature and do not creep, the interface of the abrasive tool substrate is treated by using the silane coupling agent, the high-strength bonding force between the resin bonding agent, the composite particles and the substrate is effectively enhanced, the finished diamond coated abrasive tool is free of flying pieces, flying filaments, particle dropping, delamination under the condition of high-speed rotation, and the comprehensive performance of the product is significantly better than that of the products on the market.

The invention discloses a dry grinding and dry separation process method and system for fine iron powder, and belongs to the technical field of mineral processing. The method comprises the steps that magnetite is crushed to be smaller than 10 mm, dry grinding is conducted through a horizontal grinding machine, size grading is conducted through an external efficient powder concentrator, qualified fine powder enters a fine iron powder dry magnetic separator to be separated, fine iron powder and tailing powder are obtained, and the tailing powder is directly used for baking-free brick production or sold to a cement mixing plant to serve as an additive. The system comprises a raw material temporary storage bin, a horizontal grinding machine, an efficient powder concentrator, a qualified fine powder temporary storage bin, a fine iron powder dry magnetic separator and a fine iron powder and tailing powder temporary storage bin which are sequentially connected, and coarse powder of the powder concentrator returns to the horizontal grinding machine to form a closed-loop circulating ore grinding system. According to the method, the full-dry method, zero water consumption and low energy consumption for producing the fine iron powder are realized, the tailings are easy to recycle, the process flow is simple and efficient, the production cost of the fine iron powder can be greatly reduced, and the economic benefit of a separation plant can be greatly improved.

The invention relates to the technical field of positive displacement pumps, and discloses a pump and a mechanical seal wear-resisting structure.The pump comprises a base, a motor fixedly arranged on the base, a rotating shaft fixedly arranged at the output end of the motor and a pump body fixedly arranged on the base and further comprises a connecting support, and a fixing block is fixedly installed in the connecting support; a wear-resistant structure is movably mounted in the fixed block; through the wear-resistant structure, the first-stage pushing structure is triggered when the temperature rises for the first time, the second-stage pushing structure is triggered to automatically enhance the lubricating effect when the temperature rises continuously and abnormally, and intelligent lubrication supplied according to needs is achieved by means of thermophysical characteristics and magnetic coupling of materials; the risk that the mechanical seal is damaged in a dry grinding state is greatly reduced, the service life of the pump is prolonged, lubricating oil is distributed according to needs, and waste is avoided.

The application discloses a food processing cup, a food processing cup assembly and a food processor. The cup wall of the food processing cup comprises a lower cup wall and an upper cup wall; the upper cup wall extends upward from the lower cup wall; in a direction perpendicular to the center line of the food processing cup, the distance between the outer surface and the inner surface of the lower cup wall is a first distance; the distance between the outer surface and the inner surface of the upper cup wall is a second distance; at least the second distance among the first distance and the second distance decreases in the upward direction. Therefore, among the lower cup wall and the upper cup wall, at least the lower end of the upper cup wall is thicker (i.e. thicker from top to bottom), the strength is increased, it is not easy to break, and after being assembled with a disc body and / or a cup seat, it is more stable, and can be used for whipping hard food materials, for example, the food processing cup can be used as a dry grinding cup.

1. The name of the design product: the main machine of the circulation mill. 2. The use of the design product: used as the main machine of the circulation mill, which is used for grinding and drying grinding operation. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The application discloses a self-suction pump, and relates to the technical field of pumps, which comprises a pump body, a pump body inlet, a pump body outlet, a pump cover, an impeller, a control assembly, a first pipeline assembly, a second pipeline assembly, a plugging assembly and a mechanical seal, wherein the pump body is provided with the pump body inlet on one side, the pump cover is arranged on the other side, the pump body is provided with the pump body outlet at the top end, a flow pipeline is arranged in the pump body, one end of the flow pipeline is communicated with the pump body inlet, the other end of the flow pipeline is connected with the pump cover, an impeller is rotatably arranged in the flow pipeline close to the pump cover, and the mechanical seal is arranged in the pump cover and located at the position of the impeller; the control assembly is arranged in the pump body inlet, the first pipeline assembly and the second pipeline assembly are respectively arranged on the pump body and the pump cover, and the plugging assembly is arranged in the pump body; and the sealing cavity is formed between the pump cover, the impeller and the mechanical seal. The application can form medium circulation and provide continuous self-lubrication for the mechanical seal to avoid dry grinding.