48results about How to "Uniform oxygen content" patented technology

The invention discloses a method for preparing a large powder metallurgy TZM blank with uniform carbon and oxygen distribution, which comprises the following steps of: 1, weighing raw materials; 2, mixing powder, namely mixing the weighed four raw materials twice under vacuum or the protection of inert gas, mixing titanium hydride powder, zirconium hydride powder and carbon black powder to prepare mixed powder, adding a volatile organic solvent into the mixed powder, uniformly stirring to prepare suspension, adding the weighed molybdenum powder into the suspension for uniform mixing, and adding residual molybdenum powder for uniform mixing; 3, performing cold isostatic pressing; and 4, sintering by keeping the temperature at stages, namely adopting a vacuum sintering furnace and sintering at three stages, wherein the process comprises the following steps of: raising the temperature at the first stage, raising the temperature at the second stage, and sintering at high temperature. The preparation method has the advantages of reasonable design, simple and convenient operation, and good using effect. The carbon content in the center and on the surface of the prepared larger-size TZM blank can be controlled to be approximately consistent, and the oxygen content in the center and on the surface of the TZM blank also can be reduced to a lower level.

The invention discloses a wide-temperature, high-frequency and low-power-consumption manganese zinc iron oxidation material and a method for manufacturing the same. The material comprises, by molar percentage, 50.5% to 55.0% of Fe2O3, 7.0% to 11.5% of ZnO, 30.5% to 38.5% of Mn3O4 and additive compositions of Si02, Ca0, Nb205, Zr02, TiO2, NiO and Ta2O5. The method for manufacturing the material comprises steps of: fixing a molar percentage content of the Fe2O3 and fixing contents of the ZnO and the Mn3O4; performing ball-milling for 45 minutes; pre-sintering materials after ball-milling in a rotary kiln; and performing sanding for 2 hours so that powder grain sizes are in a range from 1.0 mu m to 1.2 mu m, adding additives and the like. According to the wide-temperature, high-frequency and low-power-consumption manganese zinc iron oxidation material and the method for manufacturing the same, excellent high-frequency performances are provided for the material, demands of users for temperature characteristics are considered simultaneously, and magnetic cores of a large amount of imported magnetic cores of PC50 and 3F4 and the like in prior home appliance and communication industries can be replaced.

A farming method and large rotating farming apparatus, the method comprising: stocking an aquaculture water area with aquatic animals, disposing on the water of the aquaculture water area a large rotating farming apparatus having oxygenation and feeding functions, the large rotating farming apparatus mainly comprising a central positioning mechanism, an oxygenation mechanism and a feeding mechanism; the central positioning mechanism comprises a switching mechanism (1) positioned by a central shaft (6); one end of the rotating arm of the large rotating farming apparatus is connected to the rotor of the switching mechanism, to drive the feeding mechanism under a thrust flow effect of the oxygenation mechanism to make large rotations around the central shaft and realize simultaneous oxygenation and feeding.

The invention provides a conversion mechanism and a machine having the functions of oxygen increasing, feed delivering and liquid state preparation adding. The machine mainly comprises water distributing vanes, a floating body, a revolving arm, an oxygen increasing mechanism, a material supply mechanism, a conversion mechanism, and a liquid adding mechanism. The conversion mechanism is arranged on the water surface of a fish pond and has an electric power conversion function and a feed conversion function. One end of the revolving arm is connected with a rotor of the conversion mechanism; during work, under the flow push action of the oxygen increasing mechanism, a feed delivering mechanism is driven to rotate for 360 DEG around a central shaft. The machine has the functions of increasing oxygen, distributing water, delivering feed and adding liquid.

A farming method and large rotating farming apparatus, the method comprising: stocking an aquaculture water area with aquatic animals, disposing on the water of the aquaculture water area a large rotating farming apparatus having oxygenation and feeding functions, the large rotating farming apparatus mainly comprising a central positioning mechanism, an oxygenation mechanism and a feeding mechanism; the central positioning mechanism comprises a switching mechanism (1) positioned by a central shaft (6); one end of the rotating arm of the large rotating farming apparatus is connected to the rotor of the switching mechanism, to drive the feeding mechanism under a thrust flow effect of the oxygenation mechanism to make large rotations around the central shaft and realize simultaneous oxygenation and feeding.

The invention discloses a continuous casting production method of oxygen-free silver copper, and relates to the technical field of metal material processing. The continuous casting production method of the oxygen-free silver copper includes the steps that the high purity electrolytic copper is dried in a preheating furnace, so that the surface of the high purity electrolytic copper is anhydrous and oil-free, the dried high purity electrolytic copper is transferred to a melting furnace for melting, and the melted copper water of the high purity electrolytic copper is transferred into a heat insulation furnace through a siphon; and in the heat insulation furnace, the melted copper water is processed into the oxygen-free copper C10200, and when P and O both reach 10 PPM under the condition ofproducing three oxygen-free copper ingot C10200, the oxygen-free copper C10200 is subjected to continuous production to produce the oxygen-free silver copper C10500 / C10700. By arranging a fully enclosed casting environment, the protective gas is led into the bottom, and the calcined charcoal is covered on the copper liquid surface so as to isolate the air from being in direct contact with the copper liquid, the fact that the oxygen content of the copper liquid in the production process is stable within the qualifying range is ensured, meanwhile, the copper water is evenly mixed with the silver through the protective gas blown into the bottom, and the silver content of the oxygen-free silver copper produced is uniform.

The invention relates to aquaculture equipment and specifically relates to an aeration and clearing device of a circular culture pond. The aeration and clearing device comprises a water pumping pipe,a water pump, a double-shaft motor and a pond bottom clearing device; the water pumping pipe communicates with the water pump; the power input end of the water pump is connected with one rotating shaft of the double-shaft motor; the pond bottom clearing device also comprises a swivel, a swivel connecting pipe and a rotary water pipe; the top end of the swivel is fixedly provided with a swivel gear, and the swivel gear is connected with the other rotating shaft of the double-shaft motor by a gear connecting assembly; the rotary water pipe also comprises a rotary center pipe, a connecting pipe and a water absorbing and clearing pipe; the end of the rotary center pipe is rotatably connected with the end of the swivel connecting pipe, and the rotary center pipe is provided with an intermittenttransmission structure; and the connecting pipe is connected between the rotary center pipe and the water absorbing and clearing pipe. By adopting the design of the aeration and clearing device, pondwater layering can be avoided, the oxygen content of pond water can be increased, and it is convenient to clear the bottom of the circular culture pond.

The invention relates to the technical field of filter manufacturing, and especially relates to a household indoor air filter. A technical scheme to be solved is providing the household indoor air purifying filter against problems existing in the prior art. Airflow passing through a vortice has an eddy flow under the action of a negative pressure generated by outdoor air due to an axial induced draft fan, large dust particles in the airflow are thrown into the wall of a pipeline under the action of the centrifugal force of the eddy flow and are trapped by a static dust trapping device arranged on the wall of the pipeline, and the airflow further passes through an air rectifier, an efficient filter layer and a peculiar smell filter layer, so air is effectively filtered and purified. The filter comprises the vortice, the static dust trapping device, the pipeline, the axial induced draft fan, the air rectifier, at least one efficient filter layer and the like. The filter can be applied to the household indoor air filtration field.

The invention discloses a ventilating method which makes a ventilation effect good, is suitable for dry and cold boreal climate conditions and is used for an animal colony house. The ventilating method is characterized in that the colony house comprises a roof installed on a high-side wall, supporting columns and a low-side wall, the roof is a slope surface, the included angle formed by the slopesurface and a horizontal plane is an acute angle of 5-15 degrees, outdoor fresh air enters the colony house through an air inlet mechanism arranged at the upper portion of one side of the high-side wall and flows towards the lower portion on one side of the low-side wall in the colony house from gradually from top to bottom, and waste air in the colony house is collected and centralizedly treatedby a pipeline-type air outlet mechanism arranged at the lower portion of one side of the low-side wall and then is discharged. Air in the colony house undergoes heating treatment through pipeline airinflow in winter, control is quick and convenient, the cost is low, operation control of workers is simple and easy, and the pipeline-type air outlet mechanism also facilitate centralized treatment and discharge of waste air in the colony house. In addition, air is guided to flow downward through air guiding pipe arranged on the supporting columns, so that fresh air in the colony house contains uniform oxygen, and temperatures at the front end and the rear end in the colony house are uniform.

The invention discloses an aquaculture device for industrial aquaculture of penaeus monodon. The aquaculture device comprises an aquaculture pond body, the aquaculture pond body comprises an inner layer and an outer layer, a cavity is formed between the inner layer and the outer layer, multiple air spraying columns are connected to the inner layer, the inner cavities of the air spraying columns are communicated with the cavity, the air spraying columns are connected with hollow balls, the inner cavities of the balls are communicated with the inner cavities of the air spraying columns, multiple air spraying holes are formed in the balls, the outer layer is connected with an air pump through an air pipe, and the inner cavity of the air pipe is communicated with the cavity. The aquaculture device for industrial aquaculture of penaeus monodon has the advantages that it can be guaranteed that the oxygen content in the aquaculture pond body is even in the oxygen supply process, and growth of penaeus monodon is facilitated.

The invention discloses a preparation method of a silicon oxynitride thin film. A vertical LPCVD furnace tube is used for performing silicon oxynitride thin film growing. A silicon chip product is placed in a product work area of the vertical LPCVD furnace tube. An oxygen source, which is nitrogen monoxide, of the silicon oxynitride thin film is formed. Before the nitrogen monoxide going into the product work area and participating in reactors to form the silicon oxynitride thin film, the nitrogen monoxide is preheated and then is fully decomposed. According to the preparation method of the silicon oxynitride thin film, a correlation between oxygen content of the silicon oxynitride thin film and actual positions of the product in the furnace tube is substantially reduced, so that oxygen content of the silicon oxynitride thin film in different positions in the furnace tube is uniform, the RI in-furnace uniformity of the silicon oxynitride thin film is improved, and performance of the product is stabilized.

The invention provides a measurement method for wort oxygenation, and aims to provide the measurement method capable of stabilizing beer flavor, being reasonable for wort nutrition composition and being rich for wort oxygenation, and the technical scheme is as follows: the measurement method for the wort oxygenation comprises the following steps of 1) respectively adding the compressed air to the wort through multiple wort mixers when the wort is put into a fermentation tank; a coriolis force mass flow measurement system is adopted to measure before putting in the compressed air; 2) adding beer yeast into the fermentation tank in step 1) for aerobic respiration reproduction, performing anaerobic fermentation when the yeast is proliferated to a certain multiple, ethyl alcohol, carbon dioxide, various alcohols and esters are produced; the measurement method for the wort oxygenation belongs to the filed of wine making techniques.

The invention aims to provide a fresh and alive aquatic product storage and transportation device to increase the survival rate of aquatic products in the transportation process. The fresh and alive aquatic product storage and transportation device comprises a box body and a box cover which can be buckled to the box body in a sealed mode, and is characterized in that a partition board is arrangedat the bottom of the box body, and vent holes are uniformly formed in the partition board; a net-shaped inflating tube is arranged below the partition board, and air outlets are formed in the top surface of the air inflation tube at intervals; a pressurizing machine, an air conditioner and an oxygenerator are fixed outside the box body, an air outlet of the pressurizing machine is connected with the interior of the box body through a pipeline, and an oxygen outlet of the oxygenerator and a cold air outlet of the air conditioner run through the side wall of the box body and are communicated with the air inflation tube. The fresh and alive aquatic product storage and transportation device changes a traditional oxygen increasing mode, the dissolved oxygen amount in water is increased, therefore the water product survival rate is increased, high-density storage and transportation can be achieved, and good practicability is achieved.

The invention relates to a biomass fertilizer production device for processing biological fertilizer. The device comprises a crushing device, wherein a mixing device is arranged between the crushing device and a fermentation device, a feeding port is formed in the top of the fermentation device, a distributor is mounted in the fermentation device, and one end of the distributor is connected with an air pump through an air conveying pipe; a plurality of air pipes are mounted at the bottom of the distributor; a plurality of air delivery ports are uniformly distributed in the air pipes; the top of the distributor is fixed with the top of the fermentation device through a mounting frame. The biomass fertilizer production device is simple in structure and convenient to use, heat and moisture are uniformly added to a fermentation material in the aeration process, so that the fermentation uniformity of the material is ensured, the fermentation speed of the biomass fertilizer is effectively increased, the oxygen content and the uniformity of temperature and humidity of the fermentation material are ensured by aeration, the material turning procedure in the fermentation process of the material can be omitted, and the labor intensity of personnel is further reduced.

The invention discloses a plant culture machine. The plant culture machine comprises a base, a water tank connected to the base and one planting box a installed at the upper end of the water tank, the two ends of the planting box a are fixedly connected to two lengthways arranged support steel tubes, over one planting box b are slidably installed on the two support steel tubes, two insulated columns are connected between the planting box a and the adjacent planting box b above the planting box a, and between the two planting boxes b which are adjacent up and down, and the support steel tubes are located in the insulated columns at the corresponding end positions of the support steel tubes; the lower ends of the two support steel tubes are electrically linked to a control circuit board installed above the water tank through a wire; the lower end surface of each planting box b is provided with an LED lamp strip, the two end positions of the lower end surface of each planting box are fixedly connected to two conductive elastic sheets electrically linked with the LED lamp strip, and the two-end conductive elastic sheets abut against and are electrically linked with the support steel tubes at the corresponding ends. Through the plant culture machine, the quantity of the planting boxes b can be set as required, the LED lamp strip does not need extra wiring, and the use is convenient.

The invention discloses a carbon dioxide absorption device and method. The device comprises an air chamber, one side of the air chamber is connected with an air distributor, the other side of the air chamber is connected with a shell, and an absorption tank is installed in the shell and used for absorbing and purifying carbon dioxide in a cabin; the air chamber comprises an air chamber body, a first air cavity is formed in the side, close to the air distributor, of the air chamber body, the side, away from the air distributor, of the first air cavity communicates with a third air cavity and a second connector, the second connector is connected with an air inlet piece, and the third air cavity communicates with the inner cavity of the shell. The device is simple and reasonable in structural design, light in weight, convenient to disassemble and maintain and high in universality, oxygen can be introduced into the air chamber during use, meanwhile, the nozzle and the spray pipe are constructed according to the Venturi principle, when oxygen is introduced, gas in the cabin can be driven to circularly flow through the absorption tank, absorption of carbon dioxide in the cabin is accelerated, and then the oxygen can be mixed with gas discharged from the absorption tank and then discharged from the air distributor so that the contents of carbon dioxide and oxygen in the cabin body are uniform.

The invention discloses a household natto machine. The machine comprises a box body and an upper cover hinged to the upper end of the box body, the box body is internally provided with an outer casingbody, an inner casing body is arranged in the outer casing body, a heat insulating connecting ring is fixed between the outer casing body and the inner casing body, a water bath cavity is formed between the outer casing body, the inner casing body and the heat insulating connecting ring, the lower end of the outer casing body is provided with a heating device, and the inside of the box body is provided with a liquid expansion thermolator electrically connected to the heating device. The natto machine places soybeans in the inner casing body through a fermenting pot, the inner casing body heats the soybeans through water bath, thereby effectively avoiding the phenomenon that excessive temperature destroys the soybeans, and the soybeans are continuously stirred with stirring paddles to makethe heat, humidity and oxygen content more uniform, so that the machine can guarantee the production quality of natto and has high practical value.

The invention relates to the technical field of bioreactors, in particular to a bacteria-algae symbiotic photobioreactor which comprises a reaction box, a supporting frame and a plurality of incubators. A first partition plate and a second partition plate are arranged in the reaction box; the supporting frame is arranged at the top of the reaction box and comprises a sleeve, a mounting frame, a bolt rod and a cross beam at the top; the mounting frame is suspended at the bottom of the cross beam; a plurality of incubators are arranged on the mounting frame; multiple groups of light-emitting components are arranged at the bottom of the reaction box; the light-emitting components and the incubators are staggered; each light-emitting component comprises a mounting base at the bottom, an inner lining plate and an outer sealing plate; an LED lamp group is arranged on the mounting base; skeletons are arranged at the tops and the bottoms of the incubators, and a plurality of stand columns perpendicular to the skeletons are arranged in the middles of the incubators; a grid plate is arranged in the middle of each incubator; and a plurality of through grooves are formed in each grid plate, and the stand columns penetrate through the through grooves. According to the invention, sewage can be conveniently purified, the culture device is recycled, and resources are saved.

The invention discloses an aquaculture farming system, which comprises a culture pond and an oxygenation system for increasing the dissolved oxygen concentration of a water body in the culture pond, wherein the oxygenation system comprises a pump, a water inlet pipe connected to the inlet end of the pump and a water outlet pipe connected to the outlet end of the pump, and the water inlet of the water inlet pipe and the water outlet of the water outlet pipe are both positioned below the liquid level of the water body in the culture pond; the direction of the water inlet is opposite to that of the water outlet, and the water inlet and the water outlet are positioned on the same straight line; and the system further comprises an oxygenation device connected in series with the water inlet pipeor the water outlet pipe. The aquaculture farming system can realize water circulation in the culture pond in the oxygenation process, not only can more effectively improve dissolved oxygen in water,but also is beneficial to improving water quality.

The invention discloses a water body aeration, oxygenation and disinfection integrated device and a using method. The water body aeration, oxygenation and disinfection integrated device comprises an outer cover body, a gas storage part positioned in the outer cover body, and a sealing component positioned in the gas storage part, and is characterized in that the gas storage part and the outer cover body form a material storage part, and the outer cover body is made of high elastic fiber; the gas storage part is provided with a gas outlet, and the sealing component is positioned at the gas outlet; the sealing component is connected with the outer cover body through a push-pull piece, and a plurality of aeration, oxygenation and disinfection integrated devices are connected by gas inlet pipelines; the gas inlet pipeline is provided with at least one gas inlet, and a feed port is formed in the upper end of the storage part; the upper end of the outer cover body is positioned at the upperpart of the water surface, and the feed port is positioned at the upper part of the water surface.

The invention discloses a heatable drum-type aerobic compost reactor which comprises a barrel body arranged horizontally, wherein a feeding hole and a discharging hole are formed in the barrel wall ofthe barrel body and are distributed symmetrically in the center of the barrel body; an air inlet pipe and an air outlet pipe are respectively arranged at the two ends of a central line of the barrelbody; the air inlet pipe is connected with the air outlet pipe; a rubber plug is arranged between the air inlet pipe and the air outlet pipe; a plurality of air inlet branch pipe groups are also arranged on the air inlet pipe and in the barrel body; a plurality of shoveling plate groups are arranged on the inner circumferential surface of the barrel body in the direction of the inner diameter; theshoveling plate groups are arranged at intervals, and every two adjacent shoveling plate groups are arranged in a dislocation mode; a blower device is arranged an air inlet of the air inlet pipe; a tail gas treatment device is arranged at an air outlet of the air outlet pipe. According to the reactor, the problems that compost is difficult to stir and mix and poor in mass and heat transfer can besolved, and key parameters can be monitored, so that the compost efficiency is effectively improved.

The invention discloses a soilless-culture connection pipe with a micro-bubble device. The soilless-culture connection pipe comprises a supporting frame, a plurality of supports are fixed to the two sides of the supporting frame at equal intervals, two same-height supports serve as a group, and culturing pipes are arranged at the upper end of every group of supports; a plurality of planting platesare arranged at the upper ends of the culturing pipes at equal intervals, one ends of every two adjacent culturing pipes are connected through a connecting pipe, and the connecting pipes penetrate through the culturing pipes, and are connected to the upper ends of one sides of the culturing pipes; a water level sensor is arranged on the side wall of one end in the culturing pipe at the lowermostend, and a water outlet pipe penetrates through the lower end of one side of the culturing pipe at the lowermost end. According to the soilless-culture connection pipe with the micro-bubble device, oxygen is introduced into a nutrient solution, then the obtained nutrient solution is injected into the culturing pipes, and the oxygen content of the nutrient solution in the culturing pipes is even; after the nutrient solution is reduced, the nutrient solution can be automatically supplemented through the device, the oxygen content of the nutrient solution can be kept by replacing liquid, the liquid continues to be used after filtration sterilization, the environment is protected, using is convenient, and the soilless-culture connection pipe is suitable for popularization.

The invention relates to aquaculture equipment and specifically relates to an aeration and clearing device of a circular culture pond. The aeration and clearing device comprises a water pumping pipe,a water pump, a double-shaft motor and a pond bottom clearing device; the water pumping pipe communicates with the water pump; the power input end of the water pump is connected with one rotating shaft of the double-shaft motor; the pond bottom clearing device also comprises a swivel, a swivel connecting pipe and a rotary water pipe; the top end of the swivel is fixedly provided with a swivel gear, and the swivel gear is connected with the other rotating shaft of the double-shaft motor by a gear connecting assembly; the rotary water pipe also comprises a rotary center pipe, a connecting pipe and a water absorbing and clearing pipe; the end of the rotary center pipe is rotatably connected with the end of the swivel connecting pipe, and the rotary center pipe is provided with an intermittenttransmission structure; and the connecting pipe is connected between the rotary center pipe and the water absorbing and clearing pipe. By adopting the design of the aeration and clearing device, pondwater layering can be avoided, the oxygen content of pond water can be increased, and it is convenient to clear the bottom of the circular culture pond.

The invention discloses aquatic plant cultivation equipment. The equipment comprises a base, the top of the base is fixedly connected with an oxygen pump, an oxygen box, an electric cabinet and a supporting column through bolts, the oxygen pump is located between the oxygen box and the supporting column, the oxygen box is located between the oxygen pump and the electric cabinet, and an exhaust pipe is welded at the bottom of the oxygen box; the interior of the electric cabinet is fixedly connected with a CC1101 wireless signal transceiver, a KS02Y controller and a storage battery through bolts. The equipment is provided with a dissolved oxygen instrument, a dissolved oxygen instrument detection probe, the oxygen pump, the oxygen box and the exhaust pipe, detected oxygen content informationin water is transmitted to the dissolved oxygen instrument through the dissolved oxygen meter detection probe, when the oxygen content is too low, the oxygen pump is used for pumping air in the air into the oxygen box, and finally the air is discharged into the water through the exhaust pipe to increase the oxygen content in the water; water anoxia is avoided, the situation that plants lack waterand wither is prevented, and elongation of plants is guaranteed.

The invention belongs to the technical field of sewage treatment, and particularly relates to an aerobic microorganism sewage treatment device which comprises a ship body, a partition plate, a sealingplate, a motor, an air pump, an air pipe, a first belt wheel, a first belt, a second belt, an oxygen supply component and a driving component. The rotating shaft is driven by the motor to rotate in the spiral descending direction of the spiral pipe; therefore, the spiral pipe is driven to rotate; meanwhile, working gas of the air pump enters the spiral pipe and enters the sewage through the air outlet hole; the rotating direction of the spiral pipe is consistent with the spiral descending direction of the spiral pipe, and the air outlet holes formed in the spiral pipe are horizontally formedin the tangential direction of the spiral pipe, so that the air outlet holes are extruded by water flow in the rotating process of the spiral pipe, the pressure intensity at the air outlet hole is increased, the solubility of oxygen in sewage dissolved gas is further increased, the oxygen content in sewage is further increased, the growth speed of aerobic microorganisms is increased, the decomposition speed of organic matter is further increased, and the sewage treatment time is shortened.

The invention belongs to the technical field of breeding, and particularly relates to aquatic breeding equipment which comprises a breeding box and an oxygen conveyor, a mounting strip is assembled on the lower side of the breeding box in a left-right sliding mode, mounting holes communicated with a cavity are formed in the surfaces of the left side and the right side of the mounting strip, and stirring fan blades on the left side and the right side are opposite in rotating direction. A first vent hole extending to the lower end of the mounting strip is formed in the inner wall of the cavity on the left side, a second vent hole extending to the lower end of the mounting strip is formed in the inner wall of the cavity on the right side, the second vent hole and the first vent hole are distributed front and back, and a protective cover matched with the first vent hole and the second vent hole is arranged at the bottom of the mounting strip; the ends of the two rectangular rods extend out of the protective cover, the two rectangular rods are provided with shielding blocks matched with the first vent hole and the second vent hole respectively, the two shielding blocks are arranged in a staggered mode, the inner walls of the left side and the right side of the breeding box are provided with ejection mechanisms matched with the two rectangular rods, and the lower side of the protective cover is provided with a gas conveying mechanism connected with an oxygen conveyor.

The invention discloses a Koji making device for soy sauce. The device comprises a base, no less than four pillars are arranged on the upper surface of the base, a fan is disposed on the upper surfaceof the base on the right side of the pillar. The top ends of not less than four pillars are provided with a Koji making groove, and the left and right sides of the Koji making groove are provided with two brace bars, the upper surfaces of the brace bars at a same plane are connected with a drain plate through a fixing wire, the upper surface of the drain plate is provided with a drain hole, the upper surface of the drain plate at the lower part is provided with an air outlet pipe, the air outlet pipe passes through the drain hole at the upper part, the air inlet end of the air outlet pipe isconnected to the air outlet of the fan, the left and right ends of the upper surface of the Koji making groove are provided with guiding grooves, the surface of the raw material can be flattened, andthe heat generated inside the raw material is the same as the dissipated heat, uniform inflation and heat radiation can be carried out, so that the heat dissipation of the raw material and oxygen content are uniform, and the production quality of the soy sauce is not affected.