9results about How to "Effective accommodation" patented technology

The invention discloses an etching machine for a display screen PCB, and relates to the technical field of wet etching, the etching machine comprises a workbench, a rotating roller device, a first hydraulic cylinder, a second hydraulic cylinder, a motor, an air blowing fan and a rotating sprayer, the bottom of the inner wall of the workbench is provided with a water storage tank, the bottom of the water storage tank is provided with a water outlet, the rotating roller device is arranged on the inner wall of the workbench, and the rotating roller device is arranged on the inner wall of the workbench. The first hydraulic cylinder is fixedly installed on the outer wall of the workbench, the second hydraulic cylinder is fixedly installed on the outer wall of the workbench, and the control device is used for controlling whether the rotating spray head is communicated with the first hydraulic cylinder or not and arranged on the inner wall of the workbench and controls fluid to be connected or disconnected through mechanical coincidence and dislocation of through holes of the second water conveying opening and the first water conveying opening. Rapid and accurate response without an intermediate link is realized, and uneven etching caused by spraying angle deviation or valve delay is effectively eliminated.

The utility model relates to the technical field of blood disease patient transplantation, and disclose a foot bath bag of paronychia, including waterproof bag, the inside of waterproof bag is equipped with soft glue frame, the top of waterproof bag is fixedly connected with additional belt, the outer wall of additional belt is sleeved with restraint band, the inside of restraint band is inserted with winding rope, the outer wall of winding rope is connected with adjusting block, the bottom of waterproof bag is connected with fixing frame. The foot bath bag of paronychy, through the cooperation setting of waterproof bag, soft glue frame and additional belt, can effectively contain iodine foot bath liquid, strictly prevent iodine liquid leakage, reduce the cleaning trouble and cross infection risk caused by liquid leakage, can accurately separate and position the patient's toes, whether it is big toe or little toe can be properly settled, ensure that iodine liquid can fully and evenly contact paronychia sick part, maximize the disinfection and treatment effect of iodine, promote the relief and recovery of paronychia symptom.

This utility model discloses a large caisson lifting device, including a caisson body, lifting lugs, cables, a lifting hole, and a steel pipe. The lifting lugs are fixed to the upper end of the caisson body. The lifting hole is located on the outer side wall of the caisson body. The steel pipe is located on the outer wall of the caisson body, with one end of the steel pipe slidably inserted into the lifting hole. A first rubber pad is fixedly connected to the inner side wall of the steel pipe. A wiring groove is provided on the upper side wall of the steel pipe and at the edge of the end inserted into the lifting hole. A second rubber pad is fixedly connected to the inner side wall and bottom of the wiring groove. A guide block is fixedly connected to the lower side wall of the steel pipe. A guide groove is provided between the outer wall of the caisson body and the bottom of the lifting hole. This utility model utilizes the guide block and wiring groove structure to effectively store the cable, reduce wear between the cable and the caisson and steel pipe, and prevent the steel pipe from rotating during operation, thus improving practicality and convenience.

The invention relates to the technical field of medical biopsy instruments, in particular to an endoscopic biopsy device for respiration and critical diseases, which comprises a catheter, a cylindrical sealing piston head is slidably mounted in the catheter, an up-down through vent hole is formed in the sealing piston head, and one end, positioned in vitro, of the catheter is connected with negative pressure; a branch pipe with the tail end sealed is further arranged at the end extending out of the body, a stay wire hole is formed in the center of the sealing piston head, and a stay wire is slidably installed in the stay wire hole. One end of the pull wire extends out of the branch pipe and is provided with a pull ring; one end, far away from the pull ring, of the pull wire is provided with an umbrella-shaped cutting head and a limiting ring; the bottom of the cutting head is provided with a circle of annular cutting edge, the annular cutting edge is located above the sealing piston head, the limiting ring is located below the cutting head, and the distance between the annular cutting edge and the cutting head is larger than the height of the sealing piston head. According to the scheme of combining negative pressure adsorption and mechanical cutting, the tissue sample size larger than that of traditional biopsy forceps can be obtained, and the requirements of pathological examination are effectively met.

A method for preparing a hydrodemetallization catalyst, belonging to the field of catalyst preparation technology, includes the following steps: impregnating spherical carbon particles with an iron-containing solution and drying them; mixing the dried carbon particles uniformly with alumina sol and forming droplets; drying and calcining the formed products to obtain an iron-modified alumina support; immersing the iron-modified alumina support in an organic ammonium solution for a first and second hydrothermal treatment; drying and calcining the treated products to obtain a treated alumina support; impregnating the treated alumina support with an active component impregnation solution; drying and calcining the impregnated support to obtain the hydrodemetallization catalyst. The catalyst prepared by this method exhibits high dehydrogenation, Ni removal, and V removal activity, while also possessing high tolerance for metal impurities. This catalyst is particularly suitable for the hydrotreating of heavy oil with high Ni impurity content.

This invention discloses a concave ridge forming device and ridge forming method for a ridging machine, specifically relating to the field of agricultural tillage machinery technology. It includes a scraper with a connecting groove at one end, through which several sets of positioning components are connected. A ridge component is mounted at the bottom of each positioning component. A mounting seat is mounted on the top of the scraper, with a measuring ruler mounted on the front side of the mounting seat and several sets of equidistant positioning grooves on the rear side. The ridge component includes a wedge-shaped plate mounted at the bottom of the positioning components. The wedge-shaped plate has a front face plane on its front side, a rear face plane on its rear side, a top inclined surface on its top, and curved surfaces at both ends. The concave ridge formed by this device provides ample space for "double rows per ridge," facilitating crop photosynthesis and ventilation, and improving yield and quality. It also has strong water retention capacity, reducing water and fertilizer loss and waste. Furthermore, it eliminates the need for excessive ridge widening, improving energy and land use efficiency.

The utility model relates to the technical field of diamond saw blades, in particular to a multi-notch diamond saw blade. According to the saw blade, the open grooves formed between the adjacent diamond tool bits extend towards the center of the saw blade base body, chippings generated in the cutting process can be effectively contained, chipping discharging is smoother, cutting resistance caused by chipping accumulation is reduced, and therefore the cutting efficiency is improved. The lengths of the adjacent open grooves are different, stress generated in the cutting process is effectively dispersed, the stress is prevented from being concentrated in a specific area, and therefore the influence on the strength of the saw blade base body is reduced, the structural stability of the saw blade base body is enhanced, and the service life of the saw blade is prolonged.

This invention relates to the field of biomedical materials technology. It discloses a metal-organic hydrogel-mediated soluble microneedle patch, its preparation method, and its applications. The microneedle patch comprises a matrix and needles, wherein the matrix and needles contain a metal-organic hydrogel, polydimethylsiloxane, and a poorly soluble target drug. This application innovatively applies a metal-organic hydrogel to the preparation of a soluble microneedle patch, constructing an amphiphilic matrix with polydimethylsiloxane. This enables the preparation of soluble microneedle formulations containing uniformly distributed poorly soluble drugs, expanding the application scenarios for poorly soluble drugs and improving resource utilization. It has significant value in the formulation preparation of poorly soluble drugs.

The present application relates to a kind of hydrophobic copper-based molecular sieve catalyst and its preparation method and use method, belong to copper-based catalyst technical field.The present application discloses a kind of hydrophobic copper-based molecular sieve catalyst, the hydrophobic copper-based molecular sieve catalyst includes the copper nanoparticle of mass ratio 1 :(0.3~1.2) :(1~10), methyl functional group, silica molecular sieve framework;The methyl functional group is located on the surface of silica molecular sieve framework, and copper nanoparticle exists in silica molecular sieve channel and / or cavity.This application also discloses the preparation method of hydrophobic copper-based molecular sieve catalyst and the use method of hydrophobic copper-based molecular sieve catalyst.This application will be evenly distributed in the copper nanoparticle in silica molecular sieve channel and / or cavity, and there is methyl functional group on the outside of urchin-shaped structure molecular sieve, in maleic anhydride selective hydrogenation make by-product water quickly leave catalyst surface, reduce the occurrence of hydrolysis side reaction, improve catalyst activity and reduce the selectivity of acid product.