4results about How to "Avoid Yield Impact" patented technology

The invention discloses a tea-oil planting sowing and fertilizing machine, and belongs to the technical field of tea-oil sowing and fertilizing. At present, the uneven distribution of seeds and fertilizers and the inaccurate control of sowing depth lead to low germination rate and uneven emergence of seedlings. The invention comprises a machine body, a feeding unit is arranged on the machine body, a frame is arranged on one side of the machine body, a layered sowing and fertilizing unit is arranged on the frame, the layered sowing and fertilizing unit comprises a ridging component, a sowing and fertilizing component is arranged inside the ridging component, the sowing and fertilizing component comprises a lower fertilizer plate, a middle fertilizer plate is arranged on the lower fertilizer plate, and a sowing plate is arranged on the middle fertilizer plate; through the layered sowing and fertilizing unit, the ridging and fertilizing component is used to perform ridge formation at equal intervals on the arranged plot while moving, and at the same time, after ridging, the lower fertilizer plate, the middle fertilizer plate, the sowing plate, and the surface fertilizer plate move in parallel in the lower, middle, upper, and surface layers of each ridge soil, thereby ensuring the germination rate of seeds and the uniformity of emergence of seedlings.

This invention belongs to the field of electronic component technology and discloses an inductor structure and its preparation method. The inductor structure includes: a base with mounting holes; a permanent core rod installed in the mounting holes of the base; a coil winding wound around the permanent core rod, with at least a portion of the free end of the coil winding folded around the surface of the base, the free end serving as an electrical connection portion for electrical connection with an external circuit; and a package tightly encapsulating the permanent core rod, coil winding, and base, with the electrical connection portion located on the outside of the package. The preparation method of the inductor structure includes the following steps: assembling a temporary core rod and base, winding the coil winding, processing the electrical connection portion, folding and fixing the coil winding, replacing the core rod, and processing into a finished product in a molding die. The above-mentioned inductor structure preparation method is simple to operate and has simplified steps, which shortens the production cycle while improving the yield rate of inductor products, resulting in low product loss and low impedance.

The utility model relates to an oil well watering pressure balance control device. According to the device, a shell is divided into a control cavity and a pressurizing cavity through a partition table; the watering channel is arranged below the pressurizing cavity and communicated with the pressurizing cavity, and the two ends of the pressurizing cavity are shrunk at the pressurizing hole and the nozzle. A balance valve is installed in the pressurizing cavity, a transmission shaft of the driven gear is connected with a valve element of the balance valve, and a valve body of the balance valve provided with a liquid flow hole is fixed in a pressurizing hole below the partition table and communicated with the inlet and the nozzle. One end of the shell provided with the driven gear is connected with a watering pipeline of an oil well mouth, and one end of the shell provided with the hydraulic oil cavity is connected with an oil conveying pipeline. Accidents such as pipeline freezing blockage and pipeline perforation caused by over-high return pressure, over-low flow speed or incapability of flowing of the oil pipeline can be effectively prevented, and the working safety and normal operation of a production flow pipe network are ensured. Pollution accidents caused by pipeline freezing blockage and pipeline perforation and loss of equipment are reduced, the environment is protected, the labor intensity of operators is reduced, and the working efficiency is improved.

The present invention belongs to the field of microbial fermentation technology, and specifically relates to a method for extracting malic acid for cosmetics. The method comprises the following steps: activation, cultivation and fermentation of Aspergillus oryzae; solid-liquid separation of fermentation liquid; hydrolysis of fermentation filtrate; malic acid chitosan composite salt; separation, purification and crystallization of malic acid. The present invention utilizes bagasse and cellulose hydrolase to improve the fermentation of malic acid by Aspergillus oryzae, and also adds chitosan with a molecular weight of 10KDa-30KDa during the fermentation process to form a malic acid chitosan composite salt, and then obtains malic acid by hydrolysis, separation and purification, thereby improving the fermentation yield of malic acid and the purity of malic acid.