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

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.

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 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.