89results about How to "Avoid unstable product quality" patented technology

The utility model relates to a multi-roller blanket belt type transfer printing device, which comprises a center roller, a circular blanket belt, a guide roller, an online blanket belt cleaning and circulating system, a rectification device, a drying box and an automatic control system, wherein two ends of the center roller are fixed on a frame through bearings; a plurality of pressurizing rollers are distributed on the circumferential periphery of the center roller; a pressurizing device provides pressure for each of the pressurizing rollers independently; the circular blanket belt is wound on a plurality of supporting rollers and the plurality of pressurizing rollers; the pressurizing rollers is in pressurizing contact with the center roller through the blanket belt; a tensioning device provides tension for the blanket belt; the guide roller is arranged nearby an inlet and an outlet where the blanket belt is contacted with the center roller; the online blanket belt cleaning and circulating system is arranged in a circulation path of the circular blanket belt and comprises a blanket belt cleaning device, a scrapper and an oven; the rectification device is located on a guide roller nearby the inlet and then located in front of the inlet; the drying box is located at the outlet and then between a separation position of a fabric and a transfer printing carrier and a fabric rolling frame; and the automatic control system is used for controlling the speed of a spinning wheel, the tension of the blanket belt, the fabric and the transfer printing carrier, and the pressure of transfer rectification and pressurizing roller gradients.

The invention discloses an embedded type short-screw-flight same-direction asymmetric multi-screw extruder and a machining method thereof. A screw mechanism in the extruder comprises a first screw and a second screw which are engaged with each other. The first screw is of a single-start thread structure, and the second screw is of a four-start thread structure. Embedded type short screw flights used as auxiliary screw flights are arranged in screw channel passageways each formed between two adjacent main screw flights in the first screw. The height of the auxiliary screw flights is smaller than or equal to the height of the main screw flights. According to the machining method of the embedded type short-screw-flight same-direction asymmetric multi-screw extruder, material conveying is achieved under the common effect of the axial positive displacement conveying force of the screw mechanism and the friction force between the first screw and the second screw. By means of the homoclinic orbit flow disturbance which is introduced through the embedded type short screw flights and shaped like the Arabic number '8', the whole-journey chaotic mixing in the screw channel passageways, the one-to-two topological chaotic effect formed by a passageway composed of the first screw and the second screw, the periodic compression and expansion effect generated by the passageways of the screw mechanism and the differential-speed rotation effect of the two screws are triggered, and the materials are sufficiently mixed, molten, mixed and plastified.

The invention relates to a recovery method of a waste polyester material, particularly to a method for preparing dimethyl terephthalate (DMT) by chemically recovering waste polyester, and belongs to the technical field of waste polyester recycling. According to the method, a process comprising continuous feeding, continuous alcoholysis and continuous transesterification is adopted, such that materials are subjected to homogeneous alcoholysis in a molten state so as to achieve a short required alcoholysis time; more than two alcoholysis kettles are connected in series to carry out continuous alcoholysis, such that the alcoholysis product has stable quality; and the alcoholysis product continuously enters a transesterification kettle, and is subjected to a continuous transesterification reaction, and the EG generated by the transesterification reaction can be recycled in the alcoholysis step, such that the generation of side reactions and the unstable transesterification product qualityare avoided, and the purity and the yield of the waste polyester recovery product are greatly improved.

The invention relates to rhizopus strains, yeast strains, distiller's yeast containing the same and a production method for the distiller's yeast. The invention relates to rhizopus oryzae strains CCTCC No: M209191 and CCTCC No: M209232, saccharomyces cerevisiae strains CCTCC No: M209190 and CCTCC No: M209231, and rice distiller's yeast containing the strains. The method for producing the rice distiller's yeast comprises the following steps of: inoculating the rhizopus strains and the yeast strains into a culture medium, and performing mixed culture to obtain mixed culture yeast; inoculating the rhizopus strains into the culture medium, and performing rhizopus culture to obtain pure yeast; and blending the pure yeast and the mixed culture yeast in a certain ratio to obtain the rice distiller's yeast. The rhizopus strains and the yeast strains have good adaptability during mixed culture. The method can meet different requirements of customers on mouthfeel, and meanwhile guarantees standard control of product quality.

The invention discloses a same-direction self-cleaned twin-screw extruder with baffle plates and a processing method thereof. A screw mechanism of the same-direction self-cleaned twin-screw extruder comprises a first screw rod and a second screw rod, wherein the first screw rod is in a single thread structure, and the second screw rod is in a double thread structure; the baffle plates are arranged in the screw grooves of the first screw rod, and the height of each baffle plate is less than the depth of each screw groove of the fist screw rod; 8-shaped hyperbolic flow disturbance can be formed at the baffle plates in the screw grooves of the first screw rod; and the first screw rod and the second screw rod rotate at the same speed, are meshed with each other at all times and are self-cleaned simultaneously. According to the processing method, the screw grooves are triggered under the action of 8-shaped hyperbolic flow disturbance formed due to the arrangement of the baffle plates to mix materials chaotically all the way, two flowing ways formed by the two screw rods fulfill the topological chaotic mixing function of dividing materials into two parts, mixing the two parts of materials and dividing the mixture into two parts, and the first screw rod and the second screw rod fulfill the functions of compressing, expanding, recompressing and reexpanding periodically. Under the joint action of three reinforced mixing mechanisms, the materials can be molten and mixed efficiently.

The invention provides a continuous nylon polymerization process, which comprises the following polymerization raw materials in parts by mass: 5-60 parts of polymerization monomer dibasic acid and / ordibasic acid ester, 3-50 parts of diamine and 10-90 parts of reactive dispersion medium polyamide. According to the process, the raw materials are continuously added into a screw extrusion device in aweight metering or volume metering mode, so that the polymerization monomers react in the molten dispersion medium and are uniformly mixed; and then the mixture enters a subsequent polymerization device to be continuously polymerized until the nylon resin reaches the required molecular weight. According to the invention, melting reaction mixing of the raw materials is completed in the screw extrusion device, the bottleneck of melt polymerization production efficiency can be solved by utilizing the advantages of high heat dissipation and mixing efficiency of the screw extrusion device, and thenylon polymerization process is efficient, green and environmentally friendly.

The invention provides a method for preparing tri(1,3-dichloro-2-propyl) phosphonate, which relates to the technical field of a preparation method of a fire retardant. The method adopts a self-made catalyst, and uses phosphorus oxychloride and 1,3-dichloro-2-propanol as a raw material, and adopts the following steps: phosphorus oxychloride, 1,3-1,3-dichloro-2- propanol and the self-made solid acidcatalyst are added to a reaction kettle, the materials are heated to the temperature of 100-160 DEG C for 4-6 hours, the generated hydrogen chloride gas is distilled under vacuum of -0.2-0 MPa, a crude product is washed with alkali, washed with water, and is subjected to underpressure distillation to remove water. A reaction equation is shown as the specification. The raw materials of the invention are easy to obtain, the catalyst has good catalytic performance, the product has high purity, the yield is high, the reaction is mild, the operation is simple, and the product is more suitable forindustrial production.

The invention provides a continuous nylon polymerization method which comprises the following polymerization raw materials in parts by mass: 5-60 parts of polymerization monomer dibasic acid and / or dibasic acid ester, 3-50 parts of diamine and 10-90 parts of reactive dispersion medium polyamide. The polymerization step comprises the following steps: continuously adding the polymerization raw materials into a material mixing device in proportion, mixing and reacting the raw materials in the material mixing device to form a continuously conveyed melt, and reacting the uniformly dispersed melt ina subsequent polymerization device until the nylon is polymerized to reach the required molecular weight. The method is an efficient, green and environment-friendly nylon polymerization method.

The invention discloses Lactobacillus lactis subsp.Lavtis LLY003. Nutritional requirement of Lactobacillus lactis subsp.Lavtis LLY003 is simple, it is suitable for Lactobacillus lactis subsp.Lavtis LLY003 to grow in mung bean starch supernate prepared via only adding of a carbon source, and Lactobacillus lactis subsp.Lavtis LLY003 is capable of achieving key effects in bean juice fermentation. Lactobacillus lactis subsp.Lavtis LLY003 is capable of growing rapidly in bean juice fermentation, generating acid, and simplifying fermentation process, is suitable for production under existing conditions of the domestic manufacturers, and is capable of shortening production period. Pure bacterium fermentation of bean juice is capable of increasing safety factor and nutritional value of bean juice greatly; and flavor substances generated via lactobacillus metabolism are capable of improving the flavor of bean juice. Lactobacillus lactis subsp.Lavtis LLY003 is capable of maintaining the natural faint scent of mung bean; and the obtained living bacterium-type mung bean juice fermented beverage is a functional beverage high in nutritional value.

The invention relates to a production technology of sinking aquatic feed molded by carrying out extruding expansion and ring die pelletizing on a bulk ingredient. The production technology comprises the steps of carrying out efficient tempering and extruding expansion on mixed powder which is free from a heat-sensitive component and a feed additive, so as to cure the bulk ingredient, cooling, finely crushing and then adding the heat-sensitive component and the feed additive; after that, tempering, pelletizing and molding. The sinking aquatic feed processed by the method has the advantages of high curing degree, stable quality, easy quality control, and less loss of the heat-sensitive component compared with expanded sinking pellet feed; furthermore, a ring die pelletizing process is adopted in granule formation, so that an aquatic feed expander and a drying machine do not need to be arranged, and steam consumption is further greatly reduced; the formula is wide in adaptability, and high-starch formula sinking feed is easily produced.

The invention discloses an explosion proof aluminous shell stamping forming die of a capacitor. A clamp thereof is movably installed in a clamp guide seat through a clamp slide block, a return spring is installed between the clamp slide block and the clamp guide seat, a driving piece and a driven piece are installed between an upper template and the clamp slide block, the clamp guide seat is provided with a clamp return limitation piece, and a flexible traction piece is connected between the clamp return limitation piece and the upper template; a feeding piece thereof is movably installed in a feeding piece guide seat through a feeding piece slide block, a return spring is installed between the feeding piece slide block and the feeding piece guide seat, a driving piece and a driven piece are installed between the upper template and the feeding piece slide block, and a feeding limitation plate which extends into a moving space of the clamp slide block is also connected to the feeding piece slide block. Compared with the prior art, the invention has the advantages of simple structure and convenient maintenance and can be conveniently installed on an ordinary punch machine to use so as to replace a special explosion proof aluminous shell stamping forming machine tool.

The invention provides a control method with a deviation rate adjustment function, and belongs to the field of mineral separation control. The control method is realized through a laser liquid level sensor, a PLC and a pneumatic adjustment valve, wherein the input of the pneumatic adjustment valve is connected with the output of the PLC, the input of the PLC is connected with the output of the laser liquid level sensor, the laser liquid level sensor is arranged inside a floating cell, and the pneumatic adjustment valve is connected with an ore pulp input pipe. By the adoption of the control method, adjustment control is accurate and the phenomena of unstable production and unstable product quality can be avoided.

The invention relates to a preparation method and device for powdery fatty acid methyl ester sodium sulfonate. The invention aims at providing the method capable of realizing the MES granularity basically identical to that of washing powder. The device has the characteristic of a simple and compact structure. The preparation method for powdery fatty acid methyl ester sodium sulfonate has the technical scheme that the preparation method for powdery fatty acid methyl ester sodium sulfonate is carried out according to the following steps that (1) water-containing MES materials are conveyed to an atomizer to be dried; (2) a powder body enters a cooling section, is cooled by cold air and is then discharged from the bottom of a tower; (3) a powdery fatty acid methyl ester sodium sulfonate product is obtained. The preparation device of the powder fatty acid methyl ester sodium sulfonate comprises a cyclone separator, a cloth bag dust remover and a drying tower, wherein the atomizer is arranged between a sedimentation section and a drying section; a plurality of hot air inlets are formed between the drying section and a cooling section; exhaust openings are sequentially communicated with the cyclone separator and the cloth bag separator; the bottom of the cooling section is provided with a cold air inlet; the bottom end of the cooling section is also sequentially communicated with a fluidized bed, a crushing machine and a powder cabin through pipelines.