11results about How to "Suitable for continuous production" patented technology

This utility model relates to the field of electric wire and cable production technology, and in particular to an extrusion coating device for electric wire and cable. This device allows the electric wire and cable to be coated with different materials sequentially during its movement, thereby forming a multi-layer composite structure in a single processing cycle, effectively improving production efficiency and the bonding strength of the coating layers. The extrusion mold is equipped with a thickness control component, including horizontally movable left and right adjustable die lips, which can precisely adjust the size of the discharge hole, ensuring the uniformity and adjustability of the coating thickness to meet the processing needs of electric wire and cable of different specifications. Furthermore, the design of the conical injection channel and stepped transition surface optimizes the flow distribution of the molten material, reducing turbulence and bubble generation, and improving the coating quality. The combined use of the guide sleeve and positioning component accurately guides the electric wire and cable into the extrusion cavity, preventing deviation and ensuring the symmetry and consistency of the coating layers. The overall structure is compact, easy to operate, suitable for continuous production, and has high practicality and economy.

A continuous solid-liquid reaction device for gas treatment belongs to the technical field of flue gas desulfurization and manganese resource recovery equipment and comprises more than three reaction kettles which are connected in series through gas guide pipelines, each reaction kettle is provided with a gas inlet pipe joint, a feeding pipe joint, a gas outlet pipe joint and a discharging pipe joint, and a gas distribution device communicated with the gas inlet pipe joint is arranged in each reaction kettle. A stirring device is also arranged; the gas distribution device comprises more than two layers of gas distribution pipes which are communicated through a communication pipeline; a plurality of gas distribution holes are formed in the side walls of the gas distribution pipes; the stirring device comprises more than two layers of stirring paddles, and the stirring paddles are arranged above each layer of gas distribution pipe. The core design of'mixing gas with liquid without mixing 'is adopted, the gas distribution device is combined with stirring, so that gas is uniformly released in a small bubble form, the retention time is prolonged, and multi-stage full utilization of the gas is realized in cooperation with the gas series design. And multi-layer graded gas distribution is matched with layered stirring, so that gas-liquid-solid three-phase contact is sufficient, the reaction is stable, and deposition and short circuit are avoided.

The utility model discloses a minor-caliber cast steel pipe burial pit which comprises a pipe hanging pit and a heat preservation pit which are divided by a partition wall, an outlet is formed in the bottom of the partition wall, and a double-leaf outlet curtain is installed on the outlet. A box body cover covers the heat preservation pit, and a double-leaf inlet curtain is arranged at an inlet of the box body cover. A plurality of inclined rails are arranged in the heat preservation pit, and buffering turning assemblies are installed at the falling ends of the cast steel pipes of the upper and lower adjacent rails so as to buffer falling of the cast steel pipes. The bottom end of an arc plate of the buffering turning assembly is rotationally connected with a small shaft fixed to the lower-layer rail, the arc line of the bottom end is tangent to the surface of the lower-layer rail, and a spring is installed between the back face of the arc plate and the pit wall to buffer impact of the cast steel pipe. And a buffer pad is mounted on the arc surface of the arc plate, so that impact noise can be eliminated. The first-in first-out device realizes first-in first-out of the cast steel pipe, and is suitable for continuous production of small-caliber cast steel pipes.

A kind of casting method based on Al, Sr, La, Ce and Y composite modifier, based on Al, Sr, La, Ce and Y composite modifier is built, for casting cylinder cover;The method comprises the following steps: step S1, based on Al, Sr, La, Ce and Y composite modifier is built;Step S2, raw material is smelted, obtains preliminary melt, and adds composite modifier to preliminary melt, obtains to be refined melt;Step S3, to be refined melt is stirred and is kept warm, and is refined and degassed, obtains casting melt;Step S4, casting melt is formed and heat treated, obtains finished product.The present application has the advantages of improving the mechanical properties of thin-walled parts of cylinder cover.

This invention belongs to the field of wet electronic chemical purification, specifically relating to a membrane chromatography filter membrane for removing charged ions from liquids and its preparation method, including the following steps: S1, preparing casting solutions: preparing positively charged layer casting solutions, neutral layer casting solutions, and negatively charged layer casting solutions separately; S2, using a three-layer die to sequentially extrude the positively charged layer casting solutions, neutral layer casting solutions, and negatively charged layer casting solutions onto a polyester film; S3, exposing the casting solutions under set temperature, humidity, and airflow conditions to allow for initial phase separation; S4, immersing the coated film in a pure water coagulation bath to complete phase separation and solidification; S5, rinsing, drying, and then winding to obtain the membrane chromatography filter membrane. By designing a special three-layer composite structure with a "positively charged layer-neutral layer-negative layer," the filter membrane can simultaneously adsorb anions and cations in the solution during a single filtration process, overcoming the limitation of traditional single-charge membranes that can only remove one type of ion, thus improving purification efficiency.

The invention discloses an outer surface coating material of a composite material, and aims to provide a surface treatment method of a polyethersulfone modified composite material, which is convenient to prepare and suitable for low-cost large-scale preparation, and the coated material has better performance. GO coats SCF to form a coating body of the SCF, and the coating body is mixed with PES to form a multi-stage enhanced interface structure, so that the comprehensive performance of the composite material is comprehensively and remarkably improved on the whole, and GO can be massively prepared at relatively low cost, so that the finished product is easily available in raw materials, simple and convenient in process and suitable for low-cost large-scale production; and various performance detections are performed on the finished product, so that the reliability and consistency of the performance of the final product are ensured, and the method is suitable for the technical field of composite material surface treatment.

The invention discloses a high-transparency and high-barrier paper-based packaging material based on in-situ layered construction and a preparation method of the high-transparency and high-barrier paper-based packaging material, and belongs to the technical field of pulping, papermaking and paper-based functional materials. The method mainly comprises the following steps: 1, preparing carboxymethyl fibers; 2, preparing the TEMPO oxidized nano cellulose; 3, preparing raw paper of the high-transparency fiber supporting layer; 4, preparing a hydrogel precursor solution; 5, preparing a mixed coagulating bath; and 6, preparing the high-transparency and high-barrier paper-based packaging material. The invention provides a technical concept of'in-situ layered construction ', a high-transparency and high-strength fiber supporting layer is constructed through plant fibers, CM-fibers and TEMPO oxidized nanofibers, and the high-transparency and high-strength fiber supporting layer is prepared by utilizing the principles of ionic crosslinking and solvent exchange. A hydrogel optical interface layer for filling matrix pores and a compact surface barrier functional film layer are synchronously constructed on the surface of the fiber supporting layer, and finally the high-transparency and high-barrier paper-based packaging material constructed based on in-situ layering is prepared.

This invention belongs to the field of ceramic materials and processing technology, and relates to a stable glazed ceramic hot-bent slab and its preparation method. The invention includes a green body and a glaze. The green body adopts a multi-component composite flux system, including 20-25 parts quartz, 18-22 parts calcined kaolin, 18-22 parts potassium feldspar, 22-25 parts sodium feldspar, 8-12 parts wollastonite, 2-3 parts magnesium oxide, 0.2-0.5 parts iron oxide, and 0.1-0.3 parts titanium dioxide. The glaze includes 50-70 parts frit glaze, 0.5-5 parts coloring oxide, 2-6 parts alumina, and 1-4 parts zinc oxide. Through innovative green body and glaze formulations and optimized secondary hot-bending heat treatment processes, this invention achieves a hot-bending temperature ≤1150℃ and a holding time ≤60min. The resulting ceramic hot-bent slab has advantages such as high forming accuracy, no surface cracks, good strength retention, small glaze color difference, and low energy consumption, and has good prospects for industrial application.

The present application relates to the field of photothermal materials, discloses a kind of photothermal coating preparation photothermal material composition and its application and photothermal composite film and its preparation method and application, the photothermal material composition contains chitosan, hydrophilic photothermal component and optional auxiliary, wherein, the content weight ratio of the chitosan, the hydrophilic photothermal component and optional auxiliary is 1:0.1-15:0-5, the photothermal composite film prepared by the photothermal material composition provided by the present application is strong, has higher light absorption rate, photothermal conversion efficiency and driving water evaporation rate.

The invention discloses a continuous preparation method of an acyl fluoride compound, according to the continuous preparation method, in the presence of a catalyst, perfluoroolefin with a general formula of R1R2C = CR3R4 and carbonyl fluoride are subjected to an addition reaction to prepare the acyl fluoride compound with a general formula of CFR3R4-CR1R2-COF, R1, R2, R3 and R4 are independently selected from CnF2n + 1, and n is 0-6; the catalyst is a non-loaded body porous catalyst and consists of bicarbonate and hydrofluoride, and the bicarbonate is selected from one or more of lithium bicarbonate, sodium bicarbonate, potassium bicarbonate, cesium bicarbonate, magnesium bicarbonate, calcium bicarbonate, strontium bicarbonate and barium bicarbonate; the hydrogen fluoride salt is selected from one or more of lithium fluoride, sodium fluoride, potassium fluoride, cesium fluoride, magnesium fluoride, calcium fluoride, strontium fluoride and barium fluoride; the mass percentage ratio of the bicarbonate to the hydrofluoride is (0-60%): (40-100%). The method is mild in continuous reaction condition, easy to operate, almost free of byproducts and suitable for continuous production.

This utility model discloses a lecithin spraying device, comprising: a base, a first frame fixedly connected to the upper surface of the base, a raw material box on the frame, a feeding hopper on the upper part of the raw material box for easy feeding; a stirring plate below the raw material box, a first motor connected to the side of the stirring plate, the motor driving a first stirring plate through a stirring shaft to achieve initial stirring. A first inclined pipe is connected below the stirring plate, the other end of the inclined pipe leading to a stirring tank, a second motor above the stirring tank driving a first rotating rod to drive a second stirring plate for secondary mixing. A drop pipe is provided outside the stirring tank, connected to a storage tank for collecting the mixed liquid. A liquid inlet pipe is provided above the stirring tank, and a spray pipe is connected to the bottom to achieve water spraying and mixing; a water pump is provided on the liquid inlet pipe, fixed to the first frame, the water pump is connected to a water storage tank through a water inlet pipe, and equipped with a valve to control the water flow rate. This device has a compact structure, automatic stirring and spraying functions, is easy to operate, and is suitable for the spraying preparation and processing of raw materials such as lecithin.