5results about How to "Easy quality" patented technology

The invention relates to a method for synthesizing lesinurad, which comprises the following steps of: sequentially performing aldehyde-thiosemicarbazide condensation, cyclization, bromination and hydrolysis reaction on a compound 4-cyclopropyl naphthalene-1-formaldehyde as shown in a formula I serving as a raw material to obtain a compound lesinurad as shown in a formula V; according to the invention, a 1, 2, 4-triazole ring is constructed by an innovative strategy of aldehyde-thiosemicarbazide condensation-cyclization, so that tedious steps of a traditional step-by-step process are omitted, and the cyclization yield is increased from 85% to 92%; the method is mild in overall reaction condition, low in equipment damage, simple in process, green and environment-friendly, capable of ensuring continuous production of high-quality products and high in application value.

The storage rack convenient to manufacture comprises a bottom plate and a surrounding plate, the surrounding plate is installed on the top of the bottom plate, a lower folding edge is arranged on the outer side of the bottom of the surrounding plate, a wrapping edge wrapping the lower folding edge is arranged on the outer side of the bottom plate, a groove for positioning and installing the bottom of the surrounding plate is formed in the outer side of the top of the bottom plate, and the bottom of the bottom plate is provided with a groove. The storage rack is a fan-shaped storage rack or a square storage rack. The connecting structure is simple in structure and easy to manufacture, in the production process, the bottom plate is firstly positioned and placed on the surrounding plate, then the covered edge and the lower folded edge are formed at the same time through a forming machine, the lower folded edge is wrapped by the covered edge, assembly of the bottom plate and the surrounding plate is completed, the connecting structure is stable, quality is easy to guarantee, welding is not needed, time consumed in the production process is short, polishing treatment is not needed, and production efficiency is improved. The production cost is reduced and batch production is facilitated.

The utility model relates to the technical field of batteries, and discloses a separated assembled pole structure which comprises a top cover plate, a pole upper section and a pole lower section, and the pole upper section and the pole lower section are formed in a split manner; the post terminal lower section penetrates through the top cover plate and is provided with an upper part extending above the top cover plate, the post terminal upper section is connected with the upper part, the post terminal lower section is provided with a lower part located below the top cover plate, and the post terminal upper section and the post terminal lower section are connected to form a post terminal; the separated assembled pole structure provided by the utility model has the following advantages: 1) the pole upper sections and the pole lower sections are formed in a split manner and are connected to form the pole, so that the assembling technology is simple, the assembling efficiency is high, and the surface is not damaged; (2) the quality of the pole is easier to guarantee; 3) the poles are assembled in a separated manner, the error-tolerant rate is higher, and when the over-current capability needs to be changed, only the width size or the length size of the upper sections of the poles needs to be changed; and 4) the polar column structure adopts a single polar column arrangement, so that the flatness of the polar column is easier to control.

This invention belongs to the field of metal processing technology and aims to provide a low-cost vacuum heat treatment method specifically for pipe processing, solving the problems of high initial investment and high maintenance costs of general-purpose pipe vacuum heat treatment equipment. The method described in this invention involves vacuum-sealing the pipe to be treated in a device made of 304 stainless steel tubing, and then heat-treating the entire encapsulation device under normal pressure to achieve vacuum heat treatment of the pipe product. This method is characterized by low cost and ease of quality assurance. This invention can be used in processes such as vacuum furnace cooling, vacuum air cooling, and vacuum oil (water) quenching, and is particularly suitable for vacuum oil (water) quenching, effectively ensuring the transfer time from high temperature to room temperature.

The application relates to the technical field of energy-saving equipment, in particular to a composite power water turbine which is installed in a cooling tower air duct and comprises, from bottom to top, a water turbine body, a permanent magnet synchronous motor and a fan blade hub assembly; the water turbine body comprises a water inlet, a runner cavity, a runner body and a water outlet, the water inlet and the water outlet are both communicated with the runner cavity, and the runner body is arranged in the runner cavity; the permanent magnet synchronous motor comprises a main shaft, the bottom end of the main shaft is fixedly connected with a central shaft hole of the runner body, the top end of the main shaft is fixedly connected with a central shaft hole of the fan blade hub assembly, and the main shaft, the central shaft of the runner body and the central shaft of the fan blade hub assembly are coaxially arranged. The application has the effects that the system backwater residual pressure energy can be utilized, and when the system backwater residual pressure energy is lower than the required energy of the fan, the cooling tower temperature drop effect is not affected.