55results about How to "Avoid localized heat" patented technology

The molten metal supply device for a die-casting machine has a ladle equipped with a storing section which stores molten metal and a conveying device which conveys the ladle to a given supply position of the sleeve and tilts the ladle so that the molten metal drawn into the ladle is poured into the sleeve. The molten metal is poured into the sleeve while the position of the tip of the ladle lip against the sleeve is varied according to variation in the posture of the ladle.

The invention provides a drying method of ultrahigh molecular weight polyethylene (UHMWPE) fibers. The method comprises the following steps: coiled UHMWPE fiber yarns are fed into a dryer to go through first-stage drying, second-stage drying and third-stage drying in sequence; during the first-stage drying process, hot air blows from the lower parts of the UHMWPE fibers to the upper parts of the UHMWPE fibers; during the second-stage drying process, hot air blows from the upper parts of the UHMWPE fibers to the lower parts of the UHMWPE fibers; and during the third-stage drying process, hot air blows from the upper parts of the UHMWPE fibers to the lower parts of the UHMWPE fibers. Through the drying method provided by the invention, partial heating of the UHMWPE fibers in the drying processes caused by over-high temperature of a conveyor belt is avoided, and the mechanical performance of the UHMWPE fibers is stabilized, so that a finally manufactured anti-puncture fabric has even mechanical performance and high puncture resistance.

The invention discloses a stone-plastic floor good in size stability, and belongs to the field of floors. The stone-plastic floor comprises a surface plate and a base plate which are connected througha buffer layer. The buffer layer is one or a combination of two or three of a scientific wood layer, a non-woven fabric layer and a glass fiber layer. The base plate is a PVC stone-plastic plate. Thesurface layer comprises wood grain paper. The surface of the wood grain paper is covered with a wear-resistant fireproof layer. The buffer layer is a scientific wood layer. The PVC stone-plastic plate is a PVC stone-plastic base material. The PVC stone-plastic base material is prepared through the following steps of a, mixing and heating raw materials; b, generating air holes; c, conducting extrusion forming; d, conducting cooing forming. The defect that an existing composite floor is prone to cracks and not environmentally friendly is overcome.

The invention discloses a method for welding a tongue piece of an automobile back windshield. The method not only requires low-cost equipments and has convenient application process but also overcomes the quality defects of the prior art. The method has following steps of: (1) making column-shaped soldering tin to be flat by adopting a knocking method or a pressing method, and cutting the flat soldering tin into soldering tin pieces matched with the size of the tongue piece for standby; (2) opening a self-air temperature-adjusting plastic welding gun for pre-heating and standby; (3) using a glass-fiber bar for wiping silver paste at the positions to be welded on the windshield surface so as to remove an oxide layer; (4) placing the soldering tin pieces on the welding position and putting the tongue piece on the position, and then rapidly adopting the welding gun to blow and heat the soldering tin pieces so as to complete the welding after melting the soldering tin; and (5) placing thewindshield on a special frame for cooling after completing welding. The method is simple and practical and can be popularized easily.

The invention provides a preparation method of ultrahigh molecular weight polyethylene (UHMWPE) short fibers, comprising the following steps: preheating UHMWPE long fibers at 40-60 DEG C; curling the preheated UHMWPE long fibers; sequentially carrying out first-stage drying, second-stage drying and third-stage drying on the curled UHMWPE long fibers, wherein in the first-stage drying, hot wind is blown to the UHMWPE long fibers in a direction from the bottom up, in the second-stage drying, the hot wind is blown to the UHMWPE long fibers in a direction from the top down, and the in the third-stage drying, the hot wind is blown to the UHMWPE long fibers in a direction from the top down; and cutting the dried UHMWPE long fibers into short fibers of 50-100mm. An anti-spike fabric prepared from the UHMWPE short fibers prepared in the invention has the advantages of uniform mechanical property and higher anti-spike grade.

A high frequency heating apparatus which heats a substrate by applying high frequency waves thereto. The high frequency heating apparatus includes a high frequency generator which generates high frequency to heat the substrate. The distance from the substrate to the high frequency generator is n / 2*λ, where n is a natural number ranging from 1 to 6, and λ is the wavelength of the high frequency that is generated by the high frequency generator.

The invention discloses a preparation method of Chinese medicine decoction pieces, and relates to the technical field of Chinese medicine processing. A preparation method of traditional Chinese medicine decoction pieces of the present invention specifically includes the following steps: high-pressure expansion: low-temperature freezing treatment is performed on selected Chinese medicinal materials, and then put into an extruder for low-temperature and high-pressure expansion treatment; after the treatment is completed, cool to room temperature, Obtain expanded Chinese medicinal materials; pulse discharge plasma treatment: after mixing the expanded Chinese medicinal materials and composite particles, perform pulse discharge plasma treatment. After the treatment is completed, use magnetic separation to separate the composite particles to obtain pre-broken Chinese medicinal materials; Wall: The pre-broken Chinese medicinal materials are mechanically broken to obtain Chinese herbal medicine pieces. The invention discloses a preparation method of traditional Chinese medicine decoction pieces. Through the combination of high-pressure puffing, pulse discharge plasma treatment and mechanical wall breaking, the rate of wall breaking at one time can reach more than 99%, and the rate of wall breaking at one time is high, which is suitable for popularization and use.

The present invention refers to an improved burning system for industrial furnace burners (16), more specifically for tunnel type furnaces for firing ceramic materials, to improve the thermal efficiency and reduce the consumption by these furnaces in the process of firing load (10) such as floor tiles, tiles, sanitary material, refractories, porcelain, insulators, grindstone, tableware ceramic, red ceramic and ceramic in general, by a using flame rotation system, providing a radiant flame surface by dividing the flame into smaller intermittent flames.

The invention relates to a spiral-heating reaction device for urea and application the spiral-heating reaction device. The spiral-heating reaction device comprises a reactor, a feeding bin and a discharging bin, wherein the reactor is of a cylinder structure, and the feeding bin and the discharging bin are respectively arranged on the reactor; a stirring shaft is arranged in the reactor, the surface of the stirring shaft is spirally provided with fins and the stirring shaft is connected with a stirring shaft motor; a heating device is arranged at the outer side of the reactor, and the discharging bin is provided with a gas outlet and a discharging opening. The spiral-heating reactor device has the advantages that materials are pushed to advance spirally by the fins spirally arranged on the stirring shaft, so that the heat transferring is uniform, the local heating for the materials and the generation of excessively-condensed side products and amine derivatives are avoided and the purity of reaction products is improved; and the fins of the stirring shaft are close to the inner wall of the reactor, so that the occurrence of the wall-sticking phenomenon in the reaction process is avoided.

The invention relates to an intelligent disinfectant mobile phone with a face recognition function, which includes a main body and a limiting groove. A fastening cover is arranged in the middle of the top of the main body, and a smoke alarm is installed on the upper end of the outer fastening cover. An electric slide rail is arranged outside the rear end of the main body, and a mounting plate is installed at the end of the electric slide rail, and a camera is arranged in the middle part inside the front end of the main body, and an outer cover is installed outside the camera head. The beneficial effects of the present invention are: the smart disinfectant with face recognition function for washing mobile phones, through the setting of electric slide rails, after the installation of electric slide rails, the entire mobile phone can be washed according to the user's height along the electric The horizontal and vertical directions of the slide rails move up and down to prevent users from bending over or stepping on their feet to take the hand sanitizer when washing their phones, and the installation of the electric slide rails is convenient for users to install and use, effectively reducing the need for hand washing. Limitations in the use process, improve the effect of convenient use.