84results about How to "Increase expansion" patented technology

The invention relates to a fat cutting filter, a fat cutting filtering method and a fat cutting filtering device.The fat cutting filter comprises a shell, the interior of the shell is a treatment cavity, and the shell is provided with a first connector and a second connector which communicate with the treatment cavity; the cutting part is located in the treatment cavity and located between the first connector and the second connector, the cutting part comprises a rigid silk screen used for cutting fat, and the silk diameter of the rigid silk screen ranges from 0.05 mm to 1 mm. The mesh wires of the rigid silk screen are used for fat cutting, the structure is simple, operation is easy, convenient and efficient, the machining cost is low, the mesh diameter can be customized according to needs, the porosity can reach 90% or above, the cutting efficiency is high, and the problem of filtering blockage during fat cutting can be effectively solved.

The invention relates to a marine reverse osmosis seawater desalination equipment system which comprises a raw water pretreatment module, a primary reverse osmosis module, a secondary reverse osmosis module and an energy recovery module, raw water is preliminarily filtered by the raw water pretreatment module, then pressurized by the first-stage high-pressure pump and injected into the first-stage reverse osmosis module to generate first-stage high-pressure concentrated water, and the first-stage high-pressure concentrated water pressurizes low-pressure raw water treated by the raw water pretreatment module through the energy recovery module, then pressurized by the pressure lifting pump and injected into the first-stage reverse osmosis module; the first-stage high-pressure concentrated water is pressurized by a second-stage high-pressure pump and injected into a second-stage reverse osmosis module to generate second-stage high-pressure concentrated water, and the second-stage high-pressure concentrated water is recycled; according to the equipment system, the TDS of produced water is detected, and the pressure of the primary reverse osmosis module and the pressure of the secondary reverse osmosis module are controlled, so that the equipment system realizes maximization of produced water, efficient integration of the system, complete functions, high water production efficiency, full-automatic control and wide application scene under the condition that the equipment system meets the quality requirement of the produced water.

The invention discloses a fluidized collision type bioelectric reaction device suitable for high-carbon sewage treatment. The device comprises a reactor body, a capacitive electroactive biofilm carrier, an anode plate and a cathode plate. The reactor body is a cylinder, the bottom of the reactor body is provided with a water impeller, and the areas are separated by grids; the capacitive electroactive biofilm carrier is a sphere formed by stacking round sheets and is made of polyethylene plated with an ITO (Indium Tin Oxide) film, and stainless steel spikes are arranged on the surface of the capacitive electroactive biofilm carrier; the cathode plate is made of graphite and is cylindrical; the anode plate is made of stainless steel compounded by lauryl sodium sulfate and graphene-multi-walled carbon nanotubes and is cylindrical, the plate wall is hollow, and the anode and the cathode are connected through a circuit. Electron transfer is completed through flowing and collision of the capacitive electroactive biofilm carrier, the mass transfer efficiency and activity of the electroactive biofilm are enhanced, the high-carbon wastewater treatment capacity is improved, and meanwhile the device has the advantages of being high in impact load resistance and low in site area requirement.

The present application belongs to the field of energy utilization technology, and in particular, relates to a carbon emission reduction device for producing hydrogen from natural gas. Existing devices need to capture, utilize / seal the carbon dioxide in the tail gas. The present application provides a carbon emission reduction device for producing hydrogen from natural gas, including a water electrolysis module, a natural gas reforming module, a tail gas treatment module, a water treatment module and a power supply module connected in sequence, the water treatment module is connected to the natural gas reforming module, the water treatment module is connected to the water electrolysis module, the power supply module is connected to the natural gas reforming module, the power supply module is connected to the water electrolysis module, and the power supply module is connected to the tail gas treatment module. Oxygen-enriched combustion technology makes the carbon dioxide concentration in the tail gas higher, which is convenient for the subsequent low-cost capture, utilization or storage of carbon dioxide, making hydrogen production from fossil energy more environmentally friendly.

The invention provides a method for preparing a carbon source from kitchen garbage, and belongs to the technical field of kitchen garbage treatment. According to the method, firstly, the kitchen garbage and the fermentation tail water are mixed for fermentation pretreatment, then hydrolytic acidification is performed, and alkali-adding pretreatment can improve the proportion of a denitrification component VFAs in SCOD of fermentation liquor; the total amount of SCOD and C / N can be increased through heating pretreatment; the total amount of VFAs can be increased by enzyme pretreatment, so that the quality of the prepared carbon source is improved. The result of the embodiment shows that the VFAs / SCOD value of the carbon source prepared by the method is between 0.24 and 0.4, the proportion of VFAs is high, and the carbon source belongs to a high-performance carbon source product.

The invention discloses a biochar-based microbial agent, a preparation method thereof and application of the biochar-based microbial agent in improvement of acidified tea garden soil, belongs to the technical field of microbial agents, and provides a biochar-based microbial agent which is prepared from Serratia mar cescens JW-CZ2 and mushroom dreg biochar. The preparation method of the charcoal-based microbial agent comprises the following steps: drying, crushing and sieving mushroom dreg raw materials to obtain pretreated mushroom dreg powder; carbonizing to obtain mushroom dreg charcoal; mixing with a culture medium to obtain a charcoal culture medium mixture; inoculating serratia marcescens JW-CZ2 into the biochar culture medium mixture, performing shake cultivation, and taking precipitate; and washing and freeze-drying to obtain the biochar-based microbial agent. The biochar-based microbial agent is applied to acidified tea garden soil, the pH of the acidified soil is increased, the soil fertility is improved, and the biochar-based microbial agent is an ideal acidified tea garden soil conditioner.

The invention provides a method for improving the quality of fermented cigar tobacco leaves through a composite biological enzyme preparation, and relates to the technical field of tobacco production. According to the method, the accumulation of polyphenol metabolites in the cigar tobacco leaf fermentation process is promoted through common auxiliary fermentation of the fiveleaf gynostemma herb extracting solution, cellulase and neutral protease, so that chemical components in the tobacco leaf fermentation process are more coordinated, and the chemical quality and aroma quality of the fermented tobacco leaves are improved.

The present invention discloses a dietary fiber that can be used for weight management and has high expansion in gastric juice, and its preparation and application. The dietary fiber is composed of a three-dimensional network structure and a support structure interlaced. The three-dimensional network structure is generated by a condensation reaction of a polycarboxylic acid and a cellulose derivative. The structure has limited expansion capacity in gastric juice, and may lose resistance to gastric pressure or gastric acid erosion after expansion, so it is relatively weak in prolonging gastric retention. Therefore, the present invention introduces anionic polysaccharides, cationic polysaccharides, and inorganic calcium salts as support structures, so that the dietary fiber maintains a high expansion force in gastric juice, and at the same time, the mechanical strength and stability are significantly enhanced, providing a long-lasting feeling of fullness to the gastrointestinal tract. This innovative design is expected to play an important role in weight loss and diet control, and provide potential benefits for patients with obesity, obesity syndrome and diabetes.

The invention discloses liquid hydrocarbon fuel combustion equipment and a supercritical carbon dioxide circulation system, the liquid hydrocarbon fuel combustion equipment comprises a nozzle, a combustion chamber and a rotational flow assembly, the rotational flow assembly comprises a first-stage pipe, a second-stage pipe, a first-stage cyclone, a second-stage cyclone and a third-stage cyclone, and the first-stage pipe and the second-stage pipe are both scaling venturi pipes. The supercritical carbon dioxide circulation system comprises fuel supply equipment, pure oxygen supply equipment and a circulation assembly, mixed gas of carbon dioxide and water vapor generated by combustion of the liquid hydrocarbon fuel combustion equipment is circulated through the circulation assembly to obtain high-purity carbon dioxide, and the high-purity carbon dioxide is divided into three paths to flow into a first-stage swirler, a second-stage swirler and a third-stage swirler; the carbon dioxide flowing into the second-stage cyclone is uniformly mixed with oxygen from pure oxygen supply equipment before flowing into the second-stage cyclone. The combustion ignition delay period and the mixing time can be prolonged, a standing vortex high-temperature rapid reaction area is formed, the problem that the combustion speed is low in the concentrated carbon dioxide atmosphere is solved, and the supercritical carbon dioxide circulation efficiency is improved.

The invention provides a preparation method of a solar cell and the solar cell, and the method comprises the steps: providing a solar cell precursor which comprises a conductive layer and an insulating layer located on the conductive layer; forming a conductive paste covering a local area of the insulating layer, wherein the conductive paste has a triangular cross section; the conductive slurry is sintered to form a seed layer penetrating through the insulating layer to be in contact with the conductive layer, and the seed layer has a triangular cross section; and forming a plating layer covering the seed layer exposed outside the insulating layer using a plating process to form a gate line including the seed layer and the plating layer, the gate line having a triangular cross section. The electroplated layer has the triangular cross section, so that the light irradiated on the electroplated layer can be reflected to the active region of the solar cell.

The utility model provides an organic silicon resin production reaction device which comprises a kettle body, the bottom of an inner cavity of the kettle body is fixedly connected with a supporting plate, the surface of the supporting plate is movably connected with the lower end of a transmission rod through a sealing bearing, the upper end of the transmission rod is movably connected into a rotating cylinder, and the rotating cylinder is movably connected with the upper surface of the kettle body through a sealing bearing. An output shaft of the main motor is fixedly connected with a driving wheel, the driving wheel is respectively meshed with a wheel disc and a gear ring, the wheel disc is fixedly connected to the upper surface of a transmission rod, the gear ring is fixedly connected to the upper end of a rotating cylinder, and meanwhile, the lower end of the rotating cylinder is fixedly connected with an upper rotating ring through a fixing rod. Through cooperation of the main motor, the wheel disc, the gear ring, the rotating cylinder, the transmission rod, the main stirring plate, the auxiliary stirring plate, the side stirring plate and the auxiliary cleaning plate, the device can comprehensively stir and mix organic silicon resin in the kettle body, so that the mixing effect of the organic silicon resin is enhanced.

The application discloses a kind of raw and cooked rhizoma polygonati complex fermentation liquor products and preparation method thereof, belong to the field of biotechnology.The application provides a kind of method for fermenting complex rhizoma polygonati, the method includes the following steps: (1) raw rhizoma polygonati powder and cooked rhizoma polygonati powder are mixed after sterilization;(2) after adding microbial inoculum to the mixture after sterilization, fermentation is carried out, to obtain complex rhizoma polygonati;The microbial inoculum is lactobacillus casei liquid, lactobacillus plantarum liquid, lactococcus lactis liquid or yeast bacteria liquid;The application provides a kind of method for conveniently preparing rhizoma polygonati fermentation liquor, the color of the obtained fermentation liquor is clear and bright, aroma is added and rich, sweet and mellow in taste, greatly improve the quality of rhizoma polygonati fermentation liquor, and a variety of nutrients in the complex rhizoma polygonati fermentation liquor after fermentation are significantly improved.

The utility model discloses an assembled lithium battery cell spraying mechanism, and relates to the technical field of lithium battery cell spraying. Comprising a main body box, the inner wall of the main body box is fixedly connected with a spraying hose, coating in the main body box is stirred through rotation of an arranged stirring assembly and a stirring frame, and when the coating in the main body box is stirred, bubbles with small density and liquid with large density in the coating are subjected to centrifugal force of different degrees; the air bubbles float upwards under the action of buoyancy until the surface is broken, so that air escapes, meanwhile, shearing force generated by stirring enables the shapes of the air bubbles to be changed, walls to be thinned and easy to break, and dispersed agglomerates release the wrapped air bubbles, so that the air bubbles in the coating are effectively eliminated, and in addition, a low-pressure environment is formed in the main body box through the arranged pressure reduction assembly. And the pressure difference inside and outside the bubbles is increased through the low-pressure environment, so that the expansion and fracture speed of the bubbles is increased, the residual bubbles can be discharged from the coating more quickly, the degassing time is shortened, and the spraying effect is improved.

The present application relates to a rare ginsenoside composition and a method and application thereof, wherein the ginsenoside composition comprises 0.02-0.1 mg / mL of S-Rg3, 0.009-0.029 mg / mL of R-Rg3, 0.087-0.245 mg / mL of Rg5 and 0.013-0.044 mg / mL of CK. The rare ginsenoside is prepared by fermentation, which comprises the following steps: step-by-step fermentation with yeast and lactic acid bacteria. Through the step-by-step fermentation method, the inherent ginsenoside is converted into rare ginsenoside, and 17 kinds of rare ginsenosides, including S-Rg2, R-Rg2, F1, F4, Rk3, F2, Rh4, S-Rg3, R-Rg3, PPT, Rg5, CK, S-Rh2, R-Rh2, Rk2, Rh3 and PPD, are obtained. The bioactivity of the fermented ginseng is higher, and the fermented ginseng can be applied to the food, medicine, health food and skin care product industries.

The invention relates to self-excitation geopolymer concrete and a preparation method thereof, and belongs to the technical field of inorganic cementing materials, the self-excitation geopolymer concrete is composed of a powder material and a liquid material; the powder material is composed of Portland cement, fly ash, blast furnace slag, graded aggregate, modified calcium carbonate whiskers, sepiolite-loaded aluminum hydroxide, calcium tetraborate powder and polycarboxylate superplasticizer powder, and the liquid material is composed of sodium hydroxide, a tetrabutyl phosphorus hydroxide aqueous solution, a sodium water glass solution and water; according to the self-excited geopolymer concrete prepared by the invention, the 28-day compressive strength is 83.4 to 86.6 MPa, the 28-day breaking strength is 11.5 to 13.2 MPa, the 28-day dry shrinkage rate is 0.02 to 0.05 percent, the 28-day tensile bonding strength is 5.1 to 6.2 MPa, the 100-time circulating compressive strength loss rate in the aspect of freeze-thaw resistance is 0.4 to 0.8 percent, and the 100-time circulating tensile bonding strength loss rate is 0.3 to 0.6 percent.

The utility model discloses a sounding unit, which comprises a voice coil and a voice diaphragm, the voice diaphragm comprises an inner fixing part, one side of the inner fixing part close to the voice coil is connected with two annular walls, the inner fixing part and the two annular walls form an accommodating groove for accommodating a top area of the voice coil, and one side of at least one annular wall close to the accommodating groove is provided with at least one convex ring structure. A first glue containing area is formed between the convex ring structure close to the inner fixing part and the inner fixing part, and a second glue containing area is formed below the convex ring structure far away from the inner fixing part. According to the sound production unit, the voice diaphragm is provided with the accommodating groove capable of accommodating the top area of the voice coil, so that the voice coil can be pre-positioned, the assembly consistency of the voice coil and the voice diaphragm is improved, and the production yield is improved; the arrangement of the convex ring structure on the ring wall can form a first glue accommodating area and a second glue accommodating area in the accommodating groove, thereby improving the total amount of the glue solution accommodated in the accommodating groove, further improving the stability of the connection between the voice coil and the voice diaphragm to a greater extent, and further reducing the risk of the separation between the voice coil and the voice diaphragm.

The invention discloses a movie and television later special effect multi-specialty cooperation virtual simulation processing system, and relates to the field of movie and television later special effect multi-specialty cooperation. The system comprises the cloud database for the film and television later special effect multi-specialty cooperative processing system and the user database for the film and television later special effect multi-specialty cooperative processing system. The term library covering all related professional fields is generated by creating the cloud database, the cloud database can continuously adapt to new term translation work by updating the system through the cloud database and continuously updating and improving so as to ensure the accuracy and timeliness of terms and keep the modernization of translation, and the term translation efficiency is improved by creating the user database. The translated text segments and terms are stored, and when the same terms or phrases appear again, a user can quickly retrieve and reuse previous translations, thereby improving efficiency.

This invention relates to the field of microbial technology, specifically to a strain of *Zygosacchariformis* (…). Zygosaccharomyces rouxii ZB449 and its applications. This invention screened and obtained a Zygomyces rouxii strain ZB449, which has the ability to produce high levels of phenolic and pyrazine aroma compounds and is suitable for high-salt environments. It can be used for fermentation of high-salt foods, significantly increasing the content of phenolic and pyrazine compounds and the total amount of volatile compounds in the product. At the same time, it enhances the soy sauce aroma, smoky aroma, nutty aroma, baking aroma and the richness of the flavor, making the product aroma more balanced and rich, and comprehensively improving the flavor and overall quality of the product.

The invention discloses a method for accelerating the aging of yellow wine by top ventilation and a yellow wine ventilation aging system. The yellow wine is aged by the yellow wine ventilation aging system during the aging process. The yellow wine is stored in a tank body. The inner cavity of the tank body corresponds to the upper part of the liquid level of the yellow wine to form a top space. Sterile air is introduced into the top space. The oxygen content of the sterile air is less than that of the atmosphere. The top space is ventilated regularly. During the ventilation process, the sterile air is directly introduced into the top space. The invention is suitable for large-tank wine storage, can improve the aging efficiency of yellow wine, shorten the aging time of yellow wine, and reduce the time and space costs in the yellow wine production process.

The invention discloses a production process of fougere and soft flavor type white spirit. The production process comprises the following steps: S1, putting sorghum, wheat, rice, glutinous rice and corn, uniformly mixing the put grains with water, moistening the materials, adding rice husks, and steaming the grains to obtain fermented grains; s2, adding white koji and bacterial koji, and carrying out stacking culture saccharification for 24 hours; and S3, mixing wheat bran into the fermented grains subjected to stacking, bacterium cultivation and saccharification obtained in S2, adding high-temperature yeast, aroma-producing yeast, saccharomyces cerevisiae and sauce-flavor functional bacteria, and uniformly mixing. And S4, carrying out high-temperature accumulation saccharification treatment on the fermented grains added with the yeast. And S5, fermenting the fermented grains subjected to high-temperature accumulation and saccharification in a cellar to obtain fermentation liquor. S6, performing distillation treatment on the fermentation liquor to obtain raw wine. And S7, storing and blending to obtain a white spirit product. The bacterial koji and the Maotai-flavor functional bacteria are introduced, so that the capacity of producing ethyl hexanoate in the fermentation process is improved, and the bacterial koji and the Maotai-flavor functional bacteria are coordinated with fermentation condition optimization, so that the Baijiu with strong fragrance, sweet taste and more sweet flavor is produced.

The multistage compressed air energy storage system comprises a salt cavern air storage chamber, the inlet end of the salt cavern air storage chamber is connected with a multistage compression device and a first heat exchanger, and the outlet end of the salt cavern air storage chamber is connected with a multistage expansion power generation device and a second heat exchange device. The heat storage liquid outlet end of the first heat exchanger is connected to the heat storage liquid inlet end of the first heat exchanger through the high-temperature tank, the second heat exchange device and the low-temperature tank; the salt cavern gas storage chamber and the high-temperature tank are respectively connected with a pressure potential energy-heat energy coupling conversion device based on a Ponghua material, and the pressure potential energy-heat energy coupling conversion device is used for releasing heat energy when the pressure is increased and absorbing the heat energy when the pressure is reduced. When the compressed air energy storage system needs to store energy across months and even seasons, excess compressed air potential energy is converted into heat energy through the pressure-heat conversion device, so that potential energy output is improved, and the efficiency and economical efficiency of the system are improved.

The oil-retaining bearing fan comprises an oil-retaining bearing, the oil-retaining bearing is provided with an oil groove, an upper oil channel and a lower oil channel, and the oil groove, the upper oil channel and the lower oil channel are communicated with an oil storage area; and an oil sealing cover is arranged above the oil bearing. The oil storage amount is increased, oil volatilization is reduced, and the service life of the bearing is prolonged; the oil way circulation method comprises the steps that when the fan blades start to rotate, the shaft core in the oil-retaining bearing starts to rotate, lubricating oil overflows from the oil groove, the upper oil way and the lower oil way due to friction between the shaft core and the inner hole wall of the oil-retaining bearing, and a thin oil film is formed on the surface of the oil-retaining bearing; the fan blades generate heat in the rotating process, and lubricating oil in the oil storage area expands due to heating and overflows to the contact face of the oil bearing from the oil groove, the upper oil channel and the lower oil channel. When the fan blades stop rotating, the lubricating oil flows back into the oil storage area through the oil groove, the upper oil channel and the lower oil channel due to temperature drop.

The invention provides a Candida Zeoprini strain and application thereof in inhibition of Botrytis cinerea and wine brewing, the number of the Candida Zeoprini strain is SIVE8902, the Candida Zeoprini strain is preserved in China Center for Type Culture Collection on July 22, 2024, the preservation number is CCTCC NO: M 20241637, the Latin name is Starmeria bacilli, the preservation number is CCTCC NO: M 20241637, the preservation number is CCTCC NO: M 20241637, and the preservation number is CCTCC NO: M 20241637. The bacterium has a relatively strong inhibition effect on botrytis cinerea in fresh grapes and vineyards, and can relieve the growth and reproduction of the botrytis cinerea in berries; meanwhile, compared with independent fermentation of the saccharomyces cerevisiae and sequential fermentation of the candida zerberi and the saccharomyces cerevisiae, p-vinylcresol and 4-ethyl-2-methoxyphenol are added, spice flavor and honey flavor are added to the wine, meanwhile, the total amount of volatile phenolic compounds in the wine is greatly increased, and the quality of the wine is improved.

The invention discloses a natural fluorescent-based carbon quantum dot and a perovskite solar cell hole transport layer, an active layer and an electron transport layer thereof, and the natural fluorescent-based carbon quantum dot is prepared by the following steps: weighing a proper amount of rhodamine B and rhodamine 6G, grinding and mixing uniformly in a mortar, dissolving in ammonia water, adding PEG, and stirring uniformly; carrying out ultrasonic dispersion until the solution is completely uniform, putting the solution into a high-temperature reaction kettle, and carrying out solvothermal reaction for 5-11 hours; adjusting the pH value of the liquid obtained by the reaction, centrifuging, carrying out suction filtration, removing solid particles, and carrying out ultrasonic treatment; and dialyzing the solution in a dialysis bag for 1-3 days, properly concentrating, and freeze-drying to obtain the product. The natural fluorescent carbon quantum dots have good conductivity, after a mesoporous structure is formed on the interface of the active layer and the electron transport layer in an auxiliary mode, the natural fluorescent carbon quantum dots and materials of the two layers jointly form a unique structure, the defects of the interface and the active layer are passivated on the premise that the charge transfer efficiency is not affected, and the performance and stability of the perovskite battery are improved.

The invention belongs to the field of network topology, and discloses a capacity expansion method based on an ad-hoc network, which comprises the following steps of: taking a base station as a host, when the number of network nodes is mlt; when the maximum forwarding number of a single base station node is n, network data are forwarded to each network node in sequence according to the address list in the host; when the number of network nodes is mgt; and when the maximum forwarding number of a single base station node is n, a k-level forwarding strategy is adopted to sequentially forward network data to each network node. According to the method, the load balance of each node can be achieved in an automatic node distribution mode, and the maximum loss time of the node is optimal. And meanwhile, the capacity expansion, load balancing and self-organizing capabilities of a product network are improved, and the manual operation and maintenance cost is low.

The invention relates to a lithium slag-based waterproof agent and a preparation method thereof, and belongs to the technical field of building materials such as cement and concrete. The lithium slag-based waterproof agent comprises the following components in percentage by mass: 40%-55% of modified lithium slag, 18%-30% of a calcium ion compensating agent, 9%-19% of a complexing agent, 10%-23% of a precipitation component and 1%-5% of silicone zirconium, wherein the total mass of the raw materials of the lithium slag-based waterproof agent is 100%; and spraying a water repellent on the surface of the lithium slag, uniformly mixing, and drying to obtain the modified lithium slag. The preparation method comprises the following steps: weighing the raw material components according to the mass fraction, uniformly mixing, and carrying out dry ball milling treatment to obtain the waterproof agent. The waterproof agent has the characteristics of low cost and excellent waterproof effect, and also has a multi-stage shrinkage compensation effect and a self-repairing function.

The utility model discloses a sounding unit which comprises a basin stand, a voice diaphragm and a front cover, the top surface of the basin stand is provided with an annular groove, and the cross section of the annular groove is rectangular; the voice diaphragm comprises an outer fixing part, the outer fixing part is provided with a concave ring accommodated in the annular groove, the concave ring is provided with two oppositely-arranged enclosure walls, and the voice diaphragm and the basin stand are connected through a first adhesive layer in an adhesive mode; the front cover is provided with a contact ring frame, the bottom surface of the contact ring frame is connected with an annular convex rib, the annular convex rib is embedded into the concave ring, and the front cover is connected with the voice diaphragm through a second adhesive layer in an adhesive manner; one side, close to the annular convex rib, of the enclosure wall is provided with at least one first convex ring structure, a first glue accommodating area is formed between the first convex ring structure close to the contact ring frame and the contact ring frame, and a second glue accommodating area is formed below the first convex ring structure far away from the contact ring frame; and at least one second convex ring structure is arranged on one side, far away from the annular convex rib, of the enclosure wall. The bonding force between the voice diaphragm and the frame and between the voice diaphragm and the front cover is large, and the structural stability is good.

The invention relates to a preparation process of high-strength, high-wear-resistance and high-toughness hot work die steel for an extrusion die, which is characterized in that on the basis of common hot work die steel H13, component design is carried out by adopting a component design concept of high C, low Si, high Mo and low V, and special smelting, forging and heat treatment processes are added. The prepared product has excellent purity, structure uniformity and mechanical property, and a mold made of the material can better meet the requirements of modern industrial production for high-end molds. The process route comprises the steps of electric furnace smelting, ladle refining furnace refining, circulating vacuum refining furnace refining, electrode blank continuous casting, electrode blank annealing, electroslag remelting, forging, pretreatment after forging and solid solution and spheroidizing treatment. The invention further relates to the high-strength, high-wear-resistance and high-toughness hot work die steel for the extrusion die.

The invention provides a reversed polarity light emitting diode and a preparation method thereof, and belongs to the technical field of photoelectron manufacturing. The light-emitting diode comprises a substrate, a metal reflecting layer, a transparent conducting layer, a dielectric layer, an epitaxial layer, a first electrode and a second electrode, the second electrode is arranged on a first surface of the substrate, and the metal reflecting layer, the transparent conducting layer, the dielectric layer, the epitaxial layer and the first electrode are sequentially arranged on a second surface, far away from the first surface, of the substrate; the surface, close to the substrate, of the transparent conducting layer is provided with a plurality of through holes extending to the surface, away from the substrate, of the dielectric layer, metal conducting materials are arranged in the through holes, and the metal reflecting layer is connected with the epitaxial layer through the metal conducting materials. According to the embodiment of the invention, the problem of light absorption of the transparent conductive layer can be improved, and the light-emitting quantity of the light-emitting diode is improved.

The invention discloses a vegetable cleaning machine for dehydrated vegetable production, and relates to the technical field of vegetable cleaning. The vegetable cleaning machine for dehydrated vegetable production comprises a cleaning frame and a water inlet pipe, and also comprises a cleaning device; wherein a servo motor is fixedly installed on the outer wall of the cleaning frame, and a drain pipe is fixedly penetrated through the outer wall of the cleaning frame; wherein the cleaning device comprises a fixed plate, a water spray pipe, a rotating disk, a T-shaped rod, a telescopic elastic rod, a rotating column, a sliding frame, a sieve plate, a supporting plate, a lifting rod, a receiving plate, a convex block and an extrusion plate; the vegetable cleaning machine for dehydrated vegetable production drives the water spray pipe to rotate through the rotating disk and the T-shaped rod, thereby increasing the cleaning area of ​​the vegetables by the water flow and improving the cleaning effect, and at the same time realizing the up-and-down movement and left-and-right movement of the sieve plate, and through the movement in different directions, the pollutants on the surface of the vegetables are more thoroughly cleaned, and the cleaning effect of the vegetables is further improved.