139 results about "Fermentation rate" patented technology

The invention belongs to the technical field of health-care products, and particularly relates to a fermented composition beneficial to enhancing immunity and a preparation method thereof. The fermentation composition for improving immunity is prepared by taking yeast beta-glucan, an elderberry extract, glucoraphanin, sea cucumber peptide, inulin and a traditional Chinese medicine zymolyte as fermentation raw materials, firstly inoculating bacillus coagulans and staphylococcus xylosus for aerobic fermentation, and then inoculating bifidobacterium longum for anaerobic fermentation, the aerobic fermentation stage and the anaerobic fermentation stage have a synergistic effect, so that the fermentation speed can be increased, the fermentation time can be shortened, and richer nutrient substances can be provided, and therefore, the composition has an excellent effect of enhancing the immunity; the fermentation composition is applied to preparation of capsules helpful for enhancing immunity, is helpful for enhancing human immunity, and can solve the problem that active substances in existing health-care products are difficult to effectively absorb by human bodies, so that the effect of enhancing immunity is influenced.

The invention provides plant lactobacillus and application thereof in fermentation of sour cucumbers, and belongs to the technical field of microbial fermentation, the plant lactobacillus is preserved in Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No: 66118; the invention further provides a method for preparing sour cucumbers through fermentation of the plant lactobacillus. The method comprises the following steps that 1, cucumbers are pickled and dehydrated, and dehydrated cucumbers are obtained; and 2) mixing the dehydrated cucumbers with salt brine, and fermenting to obtain the pickled cucumbers. The plant lactobacillus provided by the invention has excellent fermentation characteristics, and when the plant lactobacillus is applied to cucumber fermentation, the fermentation rate can be increased, the fermentation period can be shortened, the crispness of cucumbers can be enhanced, and the product quality can be stabilized.

The utility model discloses a bio-organic fertilizer fermentation turning and stirring device, which relates to the technical field of bio-organic fertilizer fermentation, and comprises a fixed platform, the front and rear ends of the upper side of the fixed platform are fixedly connected with support plates, the interiors of the two support plates are rotatably connected with support rods, and the inner sides of the two support rods are fixedly connected with a stirring cylinder. A push rod is fixedly installed at the left end of the lower side of the fixed platform, the output end of the push rod penetrates through the lower side of the fixed platform and is fixedly connected with a first fixed frame, first rotating rods are rotationally connected to the front side and the rear side in the first fixed frame, and first connecting rods are fixedly connected to the upper sides of the first rotating rods. Through the arrangement of the supporting plate, the supporting rod, the first fixing frame, the first rotating rod, the first connecting rod, the second fixing frame, the second rotating rod and the push rod, the stirring barrel can be effectively made to shake, bio-organic fertilizer is prevented from being stacked at the two ends of the stirring barrel, the fermentation speed is increased, and bad gas such as methane and hydrogen sulfide is prevented from being generated.

The invention provides high-protein fermented milk as well as a preparation method and application thereof, and relates to the technical field of dairy products. The preparation method of the high-protein fermented milk comprises the following steps: S1, inoculating a fermentation base material with a fermentation inoculant, applying ultrasonic treatment, and finishing the ultrasonic treatment until the ultrasonic energy density of a fermentation system is 10-25kJ / L, the ultrasonic treatment power is 100-200W, and the frequency is 15-25kHz; s2, neutral protease is added into the secondary fermentation system for continuous fermentation treatment, the enzyme activity of the neutral protease is larger than or equal to 5000 U, and the adding amount is 0.01 wt%-0.04 wt%. According to the method, ultrasonic treatment and protease are combined to treat and ferment a high-protein product, so that the fermentation speed is further increased, the system viscosity of the high-protein fermented milk is effectively reduced, the problem of rough texture caused by high protein content is solved, the particle size of the fermented milk is relatively small, and the fineness and stability of the product are improved.

The invention discloses an oxygen supply device for agricultural microbial fertilizer fermentation, and relates to the technical field of microbial fertilizer ferment.The oxygen supply device for agricultural microbial fertilizer fermentation comprises a base, a linkage plate is fixedly installed at the top of the base, and a hydraulic cylinder is fixedly installed at the top of the base; a fermentation tank is rotatably mounted at one end, away from the base, of the linkage plate, and a motor I is fixedly mounted on the surface of the fermentation tank. According to the oxygen supply device for agricultural microbial fertilizer fermentation, aeration holes are limited in a large area through lantern rings under the action of a hydraulic cylinder, and at the moment, the oxygen supply value of an oxygen supply tank to the interior of the fermentation tank is minimum; at the moment, adaptation to oxygen supply requirements of the fertilizer in different fermentation time periods is achieved, then the fermentation rate and effect of the fertilizer in different stages are improved, the requirements of the fertilizer in different fermentation time periods are accurately adapted in the mode of automatically adjusting the oxygen supply amount according to the fermentation stages, and therefore the fermentation rate and effect of the fertilizer in each stage are improved.

The invention relates to the technical field of sludge treatment, in particular to a sludge biological treatment system which comprises a fermentation box, the device further comprises an anaerobic fermentation area, an aerobic fermentation area, a precipitation tank plate, an aeration assembly, a transfer tank, a biological tank and a sludge outlet auger, the precipitation tank plate is in a V shape and installed in the middle of the fermentation box, the fermentation box is divided into the anaerobic fermentation area, the aerobic fermentation area and the precipitation area by the precipitation tank plate, the aeration assembly is installed at the bottom of the aerobic fermentation area, and the transfer tank is installed in the sludge outlet auger. The transfer tank is installed outside the fermentation box and communicated with a sludge outlet of the fermentation box, the lower end of the transfer tank is connected with the input end of the biological tank, the transfer tank is used for evaporating sludge moisture, a biological conversion bed is arranged in the biological tank, the biological tank is used for biological treatment of sludge, and the sludge outlet auger is installed outside the biological tank. The input end of the sludge outlet auger is connected with the output end of the biological tank; the high-integration fermentation box is adopted, the fermentation speed is high, fermentation is more sufficient, sludge can be preliminarily separated, and the subsequent biological treatment efficiency is improved.

The present application belongs to the technical field of liquid organic fertilizer fermentation, in particular to a liquid bio-organic fertilizer fermentation device, which comprises a fermentation tank, a support frame is sleeved and fixedly connected to the outer wall of the fermentation tank, and a top cover is arranged at the opening of the top of the fermentation tank; the device further comprises a raw material adding auxiliary assembly; the raw material adding auxiliary assembly comprises a reciprocating rod which is slidingly connected to one side of the top of the fermentation tank, and a discharge cylinder is fixedly connected to the lower end of the reciprocating rod. The raw material adding auxiliary assembly is used to uniformly disperse the raw material to all parts of the inner cavity of the fermentation tank. At this time, the raw material is stirred by the plurality of stirring rods, and since the raw material has been uniformly dispersed to all parts of the inner cavity of the fermentation tank, the raw material can be uniformly mixed only by a short stirring time, thereby being beneficial to improving the fermentation speed. Moreover, the raw material in the discharge cylinder can be extruded by the pressure plate to crush the caked raw material, thereby avoiding the situation that the fermentation speed is affected due to the caking of the raw material.

The utility model discloses a fermentation device for organic fertilizer production, which relates to the technical field of organic fertilizer fermentation and comprises a fermentation tank, a discharge port is fixedly connected to the left side of the bottom of the fermentation tank, a feed port is fixedly connected to the right side of the top of the fermentation tank, and a turning mechanism is fixedly mounted in the middle of the bottom end of the fermentation tank. The right side of the bottom end of the fermentation tank is fixedly connected with a heater. The motor is started, the rotating shaft can drive the connecting block to rotate, then the material turning plate rotates around the rotating shaft through the rotating shaft, fertilizer turning is achieved, meanwhile, the bevel gear is meshed with the bevel gear ring so that the bevel gear can drive the connecting shaft to rotate, the material turning plate can rotate through the rotating shaft, and therefore the fertilizer turning effect is enhanced, and the fertilizer turning effect is improved. The fertilizer is uniformly mixed and fully contacted, so that the problem of local unfermentation or incomplete fermentation is avoided, the fermentation speed is accelerated, the fermentation period is shortened, and the fermentation quality of the fertilizer is finally improved.

The utility model discloses a kind of composite enzyme fermentation devices for bioengineering, it is related to composite enzyme fermentation technical field, solve the technical problem that the current reaction kettle in stirring process, single stirring rod drives stirring blade to rotate, and then make that material cannot be fully mixed, reduce the fermentation rate of composite enzyme, including stirring box, the feeding pipe is fixedly installed on the stirring box upper wall, the steam inlet pipe is fixedly installed on the stirring box side wall, the steam exhaust pipe is fixedly installed on the other side wall of stirring box, the utility model is mixed evenly by longitudinal stirring of stirring assembly to material, improve the fermentation rate of composite enzyme, by steam inlet pipe and steam exhaust pipe import hot steam, and then heat inner bag, assist composite enzyme to ferment, and then heat fermentation for material, by shock-absorbing component shock-absorbing protection to shock-absorbing box, provide stable support when material fermentation.

The application provides a kind of liquor wastewater treatment device, belongs to liquor wastewater bacteria residue technical field. Including fermentation reaction bin, the top of the fermentation reaction bin is installed with feed pipe bin, one side of the feed pipe bin is installed with auxiliary agent bin, the top of the fermentation reaction bin is installed with microbial inoculant bin, the side of the fermentation reaction bin is installed with control center. The application is equipped with spraying adjusting assembly and stirring mixing assembly, which makes the microbial inoculant fully contact and mix with the auxiliary agent, increases the activity of the microbial inoculant, speeds up the degradation process with the liquor wastewater, improves the treatment efficiency. At the same time, stirring helps the microbial inoculant to be more evenly distributed in the liquor wastewater, ensures consistent reaction effect in each area, avoids insufficient treatment in local area, avoids blockage, ensures the concentration of microbial inoculant content and fermentation speed in each area to be flat, avoids damage caused by pressure drop of the device when blocked, prolongs the service life of the equipment, reduces the cost of production.

The utility model discloses a device for preparing organic fertilizer through sludge fermentation, and particularly relates to the technical field of organic fertilizer preparation, the device comprises a support and a fermentation tank body fixedly arranged at the top of the support, an oxygen supply box is fixedly arranged on one side of the top of the fermentation tank body, and a temperature control assembly is arranged on the outer wall of the fermentation tank body. The temperature control assembly is arranged in the fermentation tank body and used for guaranteeing the fermentation temperature needed by sludge fermentation in the fermentation tank body, the mixing assembly is arranged in the fermentation tank body and used for stirring and mixing sludge and accelerating the fermentation rate, the temperature control assembly comprises a temperature control frame, and the fermentation temperature in the fermentation tank body is monitored in real time through a temperature sensor; cold water and hot water are respectively added into the cold water tank and the hot water tank in advance, and when the temperature in the fermentation tank body is different from the required fermentation temperature, the cold water or the hot water in the cold water tank and the hot water tank are respectively pumped into the temperature control frame by the two pumps, so that the required fermentation temperature in the fermentation tank body is guaranteed; therefore, the sludge fermentation efficiency and quality are improved.

The utility model belongs to the field of waste composting technology, concretely relates to livestock breeding waste composting fermentation device, including support leg and control box, control box fixedly connected at the top of support leg, the top of control box is provided with feed pipe, the bottom of control box is provided with discharge valve, the utility model discloses the setting of stirring device makes the stirring rod on the circumference of connecting ring fixedly and drives the stress rotation of auxiliary plate, makes the rotation of auxiliary plate in the control box, stirs the breeding waste in the control box, makes the breeding waste be stirred and heated, and the heating is more even, accelerates the heating speed of breeding waste, speeds up the fermentation speed of breeding waste, solves the problem that the breeding waste in the control box cannot be stirred, leads to the breeding waste not being stirred and heated more evenly, cannot accelerate and speed up the fermentation speed of breeding waste.

The invention provides an application of lactobacillus plantarum SAAS-B-PCA-202043-6 in inhibition of aerogenesis saccharomycetes and an application of lactobacillus plantarum SAAS-B-PCA-202043-6 in preparation of bagged fermented chilies, belongs to the technical field of microbial fermentation, and provides a preparation method of bagged low-salt viable type fermented chilies. And mixing with the salt brine inoculated with lactobacillus plantarum SAAS-B-PCA-202043-6 fermentation liquor, loading into a vacuum sealed packaging bag, and fermenting to obtain the fermented chili. The lactobacillus plantarum SAAS-B-PCA-202043-6 provided by the invention has a relatively strong inhibition effect on main flatulence-causing saccharomycetes in fermented vegetables, and when the lactobacillus plantarum SAAS-B-PCA-202043-6 is applied to chili fermentation, the fermentation rate can be increased, the fermentation period can be shortened, the flatulence problem of bagged low-salt viable bacteria type fermented chili products can be effectively solved, and the product quality can be stabilized.

The present invention belongs to the technical field of bioengineering, and particularly relates to a polypeptide-rich feed and a preparation method thereof. By using non-starch polysaccharide degrading enzymes such as cellulase and α-galactosidase to pre-treat soybean meal, the viscosity of the feed liquid is significantly reduced and the fluidity is increased; inoculating mixed strains after enzymatic hydrolysis in an aqueous solution of soy protein concentrate not only helps to shorten the fermentation time but also improves the fermentation efficiency; by limiting the preparation of the polypeptide-rich feed under stirring conditions, it not only helps to improve the enzymatic hydrolysis and fermentation rates, but also avoids the blockage of pipelines and die holes caused by caking, greatly improving the fermentation efficiency. Therefore, the technical solution provided by the present invention has the characteristics of short time, high efficiency and high content of protein oligopeptides.

The invention discloses a leavening dough growth-promoting lactobacillus strain KUST4216 for shortening food fermentation time and producing p-cresol at high yield and application of the leavening dough growth-promoting lactobacillus strain KUST4216. The strain is classified and named as Levibacillus zyma KUST4216; the preservation number of the strain is GDMCC NO: 65660. The content of p-cresol in fermentation liquor is larger than or equal to 5 mg / kg after acid bamboo shoots are fermented by the strain for 7 days; after the brine is fermented for 4 to 5 days, the content of p-cresol is 15.5 to 22 mg / kg; the content of p-cresol in the fish dices fermented for 5 days is 5-6 mg / kg, the fermentation effect reaches the content of p-cresol obtained after fermentation of an existing natural fermentation method for 1 month, and the fermentation speed is effectively shortened.

The present invention relates to the technical field of sludge treatment, and in particular to a sludge biological treatment system, comprising a fermentation box; an anaerobic fermentation area, an aerobic fermentation area, a sedimentation tank plate, an aeration component, a transfer tank, a biological pool and a mud discharge auger, wherein the sedimentation tank plate is V-shaped and is installed in the middle of the fermentation box, and the sedimentation tank plate divides the fermentation box into an anaerobic fermentation area, an aerobic fermentation area and a sedimentation area, the aeration component is installed at the bottom of the aerobic fermentation area, the transfer tank is installed outside the fermentation box, the transfer tank is connected to the mud outlet of the fermentation box, the lower end of the transfer tank is connected to the input end of the biological pool, the transfer tank is used to evaporate sludge water, a biological conversion bed is provided in the biological pool, the biological pool is used to biologically treat sludge, the mud discharge auger is installed outside the biological pool, and the input end of the mud discharge auger is connected to the output end of the biological pool; the highly integrated fermentation box is used, the fermentation speed is faster and more sufficient, the sludge can be preliminarily separated, and the efficiency of subsequent biological treatment is improved.

The object of the present invention is to provide a processing method that makes it possible to improve various characteristics related to a fermented food or beverage that uses a protein ingredient (and, in particular, characteristics of the fermented food or beverage itself such as stress, water retention, suppression of water release, and the like or characteristics of the ingredients of the fermented food or beverage related to fermentation speed during production of the fermented food or beverage). The present invention improves various characteristics of a fermented food or beverage that uses a protein ingredient using the action of a protein deamidase and a multicopper oxidase during production of the fermented food or beverage.

Disclosed herein are yeast strains and derivatives thereof, as well as compositions comprising the yeast strains for use in ethanol production. The disclosure also relates to processes for producing ethanol from biomass using the yeast strains and compositions. In particular, the yeast strains produce less glycerol and more ethanol, and have higher temperature tolerance and faster fermentation rates than strains and products currently used in ethanol production processes.

The invention discloses a clostridium aerovorans continuous fermentation method based on multi-parameter regulation and control, and belongs to the technical field of microbial fermentation. The method comprises the following parameter control: fermentation culture medium concentration control: in a biomass stabilization stage, gradually reducing the fermentation culture medium concentration from an initial concentration so as to reduce an acid production ratio and improve an alcohol production ratio; the CO content in the tail gas is controlled, wherein the volume fraction of CO in the tail gas is controlled to be 5-10%, and therefore the growth rate of the clostridium aerovorans is increased; dilution degree control: gradually improving the dilution degree so as to improve the fermentation yield; wherein the dilution is equal to the product of the fermentation culture medium feeding speed and 24 / fermentation liquid volume; a ceramic membrane is added, and thalli are intercepted by adding the ceramic membrane, so that the biomass is improved. According to the method, the fermentation acid-alcohol ratio can be regulated and controlled, and the fermentation rate of the clostridium aerovorans is increased.

The application provides a lactobacillus plantarum and application thereof in fermented sour cucumbers, and belongs to the technical field of microbial fermentation. The lactobacillus plantarum is preserved in the Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No: 66118. The application also provides a method for preparing the sour cucumbers by fermentation of the lactobacillus plantarum, which comprises the following steps: 1) pickling and dehydrating cucumbers to obtain dehydrated cucumbers; and 2) mixing the dehydrated cucumbers with salt brine and fermenting to obtain the sour cucumbers. The lactobacillus plantarum has excellent fermentation characteristics, and when the lactobacillus plantarum is applied to cucumber fermentation, the fermentation rate can be improved, the fermentation period can be shortened, the crispness of the cucumbers can be enhanced, and the product quality can be stabilized.

The application discloses an intelligent fermentation control system for a beer brewing process and relates to the technical field of beer brewing.The system comprises the following steps: crushing malt, saccharifying, filtering, obtaining qualified wort, detecting the concentration, pH value and dissolved oxygen content of the wort, leading the wort into a fermentation tank and sterilizing the wort; detecting the temperature, pH value, carbon dioxide concentration, reducing sugar concentration, alcohol concentration and dissolved oxygen content by using a sensor and standardizing the temperature, pH value, carbon dioxide concentration, reducing sugar concentration, alcohol concentration and dissolved oxygen content; calculating the deviation between each data and the optimal value by using the standardized temperature, standardized pH value and dissolved oxygen content, wherein the optimal value is the medium value of the value allowed during brewing and the minimum value, and adjusting and correcting by using a PID algorithm; calculating a brewing index by using a fermentation environment index and a fermentation rate index, and judging the brewing condition according to the brewing index.

The utility model relates to the technical field of municipal environmental protection engineering. The biogas fermentation device for the municipal environmental protection engineering comprises a fermentation structure, the fermentation structure comprises a fermentation tank, a supporting frame, two groups of barrier plates, a motor, a rotating column, crushing blades, connecting columns, stirring blades and a pollution discharge base, and the number of the barrier plates and the connecting columns is two, and the number of the crushing blades and the stirring blades is multiple. A power source is provided for the motor through an external power source, the motor can drive the rotating column and the multiple crushing blades to rotate after being started, the two sets of connecting columns and the multiple sets of stirring blades can be driven to rotate at the same time, the multiple sets of crushing blades can crush organic waste when rotating, and the crushing efficiency is improved. Organic waste materials and water can be stirred when the various stirring blades rotate, and the design can enable the water and the organic waste materials to react more sufficiently, so that the fermentation speed of the biogas is increased.

The invention relates to the technical field of bacterial fertilizer fermentation, and discloses bacterial fertilizer fermentation and sterilization equipment for bacillus velezensis, comprising: a tank body in which a material collecting cavity is coaxially and fixedly mounted; the transmission cavity and the material collecting cavity are coaxially and fixedly installed, and the transmission cavity is located in the material collecting cavity; a plurality of feeding ports which are circumferentially distributed are formed in the side wall of the material collecting cavity; and a gas guide ring; the transmission assembly drives the material containing plate to bear the raw materials to ascend, and when the material containing plate ascends to be as high as the decomposing pieces, the transmission assembly drives the corresponding push plate to slide towards the feeding port in the top of the decomposing piece so as to push part of the raw materials on the material containing plate to the decomposing pieces, so that the raw materials in the pile shape can be decomposed, and it is ensured that the raw materials can be dispersed on the decomposing pieces; and the plurality of heating pieces are used for heating respectively, so that the problems that the auxiliary materials are difficult to contact with the interior of the raw material pile and the temperature is difficult to conduct to the interior of the raw material pile to cause insufficient reaction are solved, and the fermentation rate is increased.

Disclosed herein are yeast strains and derivatives thereof, as well as compositions comprising the yeast strains for use in ethanol manufacture. The disclosure also relates to processes for producing ethanol from biomass using the yeast strains and compositions. In particular, one or more of the yeast strains produce higher ethanol, leave less residual fructose, and have a higher temperature tolerance and higher fermentation rate than strains and products currently used in ethanol production processes.

The invention belongs to the technical field of biology, and discloses a process for improving the fermentation rate of glutamic acid, which comprises the following steps: a fermentation medium containing oligopeptide is used for fermentation, and the amino acid sequence of the oligopeptide contains PSGPR. By optimizing the components of the fermentation culture medium, the density and activity of the strain are improved, so that the glutamic acid fermentation efficiency is promoted to be improved.

The utility model relates to the technical field of bio-organic fertilizer production, and discloses a bio-organic fertilizer fermentation device with a temperature monitoring function, which comprises a reaction barrel, a feeding component is arranged in the reaction barrel, a fermentation barrel is fixedly connected in the reaction barrel, a motor is fixedly connected to the outer wall of the reaction barrel, and a temperature monitoring device is arranged in the reaction barrel. The output end of the motor is fixedly connected with a main gear, the interior of the fermentation barrel is rotatably connected with a rotating disc, the interior of the rotating disc is rotatably connected with a connecting pipe, the outer wall of the connecting pipe is fixedly connected with an auxiliary gear, and the main gear is meshed with the auxiliary gear. According to the fermentation temperature detection device, the main gear and the auxiliary gear are matched with the motor to rotate, so that the crossed plate can drive the stirring roller and the connecting seat to rotate, and then the first scraping plate and the second scraping plate are driven to scrape the inner wall of the fermentation barrel, and the problems that an existing fermentation temperature detection device cannot turn over and stir organic fertilizer, and the stirring efficiency is high are solved. Therefore, the fermentation speed is slow.

The utility model discloses a straw organic fertilizer fermentation and storage device, and relates to the technical field of straw fermentation. Comprising a storage box and a box door, a chassis is fixedly installed at the center position of the inner wall of the bottom of the storage box, a supporting rod is arranged on the chassis, and a plurality of placing mechanisms distributed at equal intervals are fixedly installed on the circumference of the supporting rod; the placing mechanism comprises a plurality of supporting rods which are distributed on the circumference of the supporting rod in an annular array mode, the multiple supporting rods located on the same horizontal plane are fixedly connected with the same placing ring, and the section of the placing ring is in an upward-protruding arc shape. Through the arrangement of the shape of the placing ring, the contact area between straw and air can be increased, the fermentation speed of the straw is further increased, the air circulation rate in the storage box is increased in cooperation with the air guide mechanism, the air blowing time of the straw is averaged through the rotating mechanism, and the contact area between the straw and the air is increased through the vibration mechanism. The fermentation speed of the straws in the device is integrally improved.

The utility model discloses a craft beer fermentation tank which comprises a tank body, a temperature control system, a pressure control system and an oxygen supply system, the temperature control system comprises a heating coil and a cooling coil which are arranged on the outer wall of the tank body, as well as a temperature sensor and a preset controller which are connected with the heating coil and the cooling coil, and is used for monitoring and adjusting the temperature in the fermentation tank in real time; the pressure control system comprises an adjustable pressure valve and a pressure sensor which are arranged at the top of the tank body, and the temperature, the pressure and the oxygen level in the fermentation tank can be accurately controlled through integration of the temperature control system, the pressure control system and the oxygen supply system, so that ideal conditions are provided for beer fermentation; the temperature and the pressure in the fermentation tank are monitored and adjusted in real time, the stable operation of the fermentation process is ensured, the quality and the taste of beer are improved, a proper amount of oxygen is supplied into the tank through the oxygen supply system, the activity of yeast can be promoted, and the fermentation speed is increased.

The present application relates to the technical field of fermentation, and discloses a rapid compost fermentation machine and a method thereof, which comprises a fermentation and turning machine. The present application realizes self-adaptive adjustment of the distance and the spraying angle of the nozzle through cooperation of the variable spraying assembly and the positioning plate. The flat groove and the reversing groove on the positioning plate correspond to the top plane of the fertilizer pile and the two inclined side walls respectively. When the protrusion at the top of the top rod slides along the groove body, it can drive the adjusting pipe to rise and fall synchronously, so that the distance between the nozzle and the surface of the fertilizer pile is always kept stable. At the same time, the limiting plate pushes the swing arm to drive the nozzle to adjust the angle, so that the nozzle and the spraying surface are always in an approximately vertical state. This ensures that each area of the fertilizer pile can be uniformly sprayed with water or bacteria liquid, guarantees the consistency of the fermentation environment, avoids the occurrence of local fermentation deficiency or anaerobic fermentation, improves the pass rate of the compost product, speeds up the compost fermentation speed, shortens the compost period, and meets the needs of large-scale and efficient composting.

The invention relates to the technical field of stirring fermentation, in particular to a self-cleaning type double-shaft stirring fermentation tank and a self-cleaning evaluation method of the self-cleaning type double-shaft stirring fermentation tank. The self-cleaning type double-shaft stirring fermentation tank comprises a tank body, a tank cover, a heat preservation isolation layer, a double-shaft stirring crushing assembly and a self-cleaning assembly. The heat preservation isolation layer is used for maintaining the temperature of the tank body stable and is arranged on the tank body, the double-shaft stirring and crushing assembly is arranged on the tank cover, and the self-cleaning assembly is in transmission with the double-shaft stirring and crushing assembly; the fermentation tank has the beneficial effects that the internal temperature of the tank body is continuously kept by utilizing the heat-preservation isolation layer, so that the stability of the fermentation process is ensured; the vortex is formed in the stirring and crushing process, so that the materials are fully mixed and crushed, and the fermentation efficiency is improved; through stirring in the fermentation process, the fermentation speed is increased, and meanwhile the fermentation completion degree can be improved; and the tank body after fermentation can be effectively and automatically cleaned, so that an operation procedure without manual cleaning is realized, and the standard uniformity of self-cleaning operation is improved.