5results about How to "Guaranteed maximum utilization" patented technology

The utility model discloses a quartz sand production tail powder recovery device, which belongs to the technical field of quartz sand production and comprises a tail powder recovery tank, a filter separation screen is fixedly mounted on the upper portion of an inner cavity of the tail powder recovery tank, and a separation blanking slope slide end is arranged at one end of the top surface of the filter separation screen. A discharging lifting arc-shaped plate is arranged at the end, close to the separating discharging slope sliding end, of the filtering and separating screen, an output shaft of the servo motor longitudinally and rotationally penetrates through the top end of the filtering and separating screen, anti-blocking scraping rods are symmetrically welded to the output shaft, and an electric lifting rod is longitudinally installed on the inner wall of the U-shaped supporting frame rod. The top end of the electric lifting rod is connected with the bottom face of the discharging lifting arc-shaped plate, and a separation flow channel is formed in an inner cavity of the tail powder recycling tank. According to the utility model, only particle quartz sand meeting the actual required particle size requirement on site can fall to the bottom of the tail powder recovery tank through the screen, so that a rapid and effective screening and separating process is realized.

This invention provides a Rh / MnO nanocatalyst, its preparation method, and its application, comprising the following steps: A) adding a manganese source solution dropwise to a ligand solution to obtain a mixed solution; the ligand solution includes a complexing agent and a polyol; B) drying and calcining the mixed solution to obtain manganese oxide; C) mixing the manganese oxide and a rhodium source in water to obtain a mixed slurry; the mass ratio of the manganese oxide to the rhodium source is (75~150):(1~10); D) drying and calcining the mixed slurry to obtain a precursor; E) reducing the precursor in a reducing atmosphere to obtain the Rh / MnO nanocatalyst. The nanocatalyst of this invention exhibits high conversion rate and high selectivity in the direct synthesis of multi-carbon oxygen-containing compounds from syngas. The multi-carbon oxygen-containing compounds produced by the Rh / MnO catalyst provided by this invention contain a high proportion of ethanol and acetaldehyde, achieving the co-production of ethanol and acetaldehyde.

The utility model discloses an efficient tube type heat exchanger which comprises a fixing frame, the inner walls of the two sides of the fixing frame are both connected with shells in a sliding mode, the two shells are mutually fixed, the two shells are both fixedly connected with a plurality of second baffles, a plurality of branch pipes penetrating through the second baffles are fixedly connected between the second baffles, and the branch pipes penetrate through the second baffles. The top of the shell is fixedly connected with a plurality of connecting pipes communicated with the shell, and the connecting pipes are located at the top of the second baffle, so that the retention time of high-temperature gas in the heat exchanger can be remarkably prolonged through the matched use of the first baffle and the power assembly, and the heat exchanger can be conveniently and rapidly disassembled by designing the two shells. The two shells participate in the heat exchange process at the same time, the heat exchange efficiency is greatly improved, and the heights of the two shells can be flexibly adjusted through the power assembly.

The utility model relates to the field of tumor hypoxia research, in particular to a regional constraint unilateral magnetic field excitation device for hypoxia research, which comprises a magnetoacoustic excitation module, two coils are electrically connected to the bottom of the magnetoacoustic excitation module, and bilaterally symmetrical bases are arranged on the lower side of the magnetoacoustic excitation module. The lower side of the magnetoacoustic excitation module is connected with lifting pieces which are symmetrical left and right, the lifting pieces are slidably connected with the base, the middle of the base is rotatably connected with rotating pieces, and the middle of each lifting piece is connected with a lead screw. According to the utility model, through the design of the driving assembly, stable and accurate height adjustment of magnetoacoustic excitation is realized, so that researchers can flexibly change the height of the action of a magnetic field according to experiment requirements, the operation process is greatly simplified, and the experiment preparation efficiency and flexibility are improved.

The application discloses a data processing method, device and equipment and a computer readable storage medium. The method comprises the following steps: acquiring a first message queue corresponding to a service message, and acquiring a first message quantity of the service message and a second message quantity of existing messages in the first message queue; determining whether the first message queue satisfies a first preset thread conversion condition based on the first message quantity and the second message quantity; if the first message queue satisfies the preset thread conversion condition, determining a first to-be-converted thread quantity based on the first message quantity, the second message quantity and a producer thread quantity corresponding to the first message queue; and performing a thread conversion operation on the producer thread corresponding to the first message queue based on the first to-be-converted thread quantity. The application performs the thread conversion operation on the producer thread corresponding to the message queue, so as to reduce the message quantity in the message queue and reduce the occurrence rate of message backlog in the message queue.