45results about How to "Not easy to plug holes" patented technology

The invention discloses a drainage treatment method and a drainage treatment device, which relate to the technical field of drainage treatment; in order to improve the treatment efficiency and effect; The interior is provided with a first cavity and a second cavity, the same filter plate is set between the first cavity and the second cavity, a filter mechanism is provided on the outer wall of one side of the filter plate, and the outer wall of one side of the filter plate is provided with a A through hole adapted to the filter mechanism; the method includes the following steps: installing the input end of the main body on the output end of the water supply device, and connecting the output end of the main body to the drain. The present invention can collect impurities well by setting filter plate, filter sleeve and other structures, and clean them conveniently through the zipper. In addition, the filter holes are evenly opened on the outer wall of the filter sleeve, and cooperate with the pocket structure of the filter sleeve to make the filter The sleeve is not easy to block the hole before the inner space is collected.

The invention belongs to the technical field of a rammer for foundation treatment in construction engineering, and specifically relates to a special rammer for dynamic compaction replacement treatment of flow-plastic to soft-plastic clay, including a hook part, an anti-buried hammer extension part and a rammer For the hammer body, the height of the anti-buried hammer extension is more than 2.8 meters. The rammer body includes an upper trapezoidal circular table structure and a lower cylindrical structure. The outer wall of the rammer body is evenly distributed with a number of semicircular ventilation holes. The present invention solves the problem of "buried hammer" in the dynamic compaction replacement of flow-plastic to soft-plastic clay foundations. For the problem that it is impossible to carry out dynamic compaction depth replacement due to hammering, dynamic compaction, an environmentally friendly and low-cost treatment technology, can further expand the scope of application, and has a broad application market and good development prospects.

The invention discloses a thermoplastic polyurethane fine mesh screen. The thermoplastic polyurethane fine mesh screen comprises a screen body, a plurality of small screen pieces, rectangular rib strips, triangular rib strips, transverse screen borders and longitudinal screen borders. The small screen pieces are arranged in parallel to form the screen body. The screen body is fixedly arranged in a screen frame defined by the transverse screen borders and the longitudinal screen borders. Each rectangular rib strip is connected between every two adjacent small screen pieces. The thickness of the rectangular rib strips is equal to that of the small screen pieces. The small screen pieces are composed of rectangular net areas, big transverse rib strips, big longitudinal rib strips and small longitudinal rib strips. The big transverse rib strips and the big longitudinal rib strips or the small longitudinal rib strips are intersected to form the rectangular net areas on the small screen pieces. The thermoplastic polyurethane fine mesh screen has the characteristics that the thermoplastic polyurethane fine mesh screen is high in porosity, long in service life, not prone to hole blockage, low in investment, simple in forming process, short in forming time, high in forming efficiency and high in finished product rate, and the phenomenon that holes of the screen are not through cannot occur.

The invention relates to a high-flux reinforced ultrafiltration membrane, which is composed of the following components in parts by weight: 30-40 parts of dopamine-modified polyvinyl chloride; 10-20 parts of a hydrophilic agent; and 40-50 parts of a polar solvent ; 10-20 parts of porogen; 5-15 parts of auxiliary agent. The present invention adopts hydrophilic agent, auxiliary agent and dopamine-modified polyvinyl chloride to be blended and modified in polar solvent, so as to reduce the surface tension of the membrane surface and the inner wall of the membrane hole, and improve the hydrophilicity of polyvinyl chloride. The polar bonds in the triethanolamine and the auxiliary and the polar bonds in the dopamine composite layer produce hydrogen bonds and attract each other, so that the hydrophilicity can be maintained for a long time, the anti-fouling property of the ultrafiltration membrane can be improved, and the UF membrane can be maintained for a long time. High operating flux; in addition, the small molecule porogen is not easy to block pores, has good film-forming performance, good pure water flux, low degree of entanglement with the main material, and is easy to detach from the surface of the film; the auxiliary agent can effectively improve the melt processability , the mechanical properties are greatly enhanced.

The invention relates to an eddy flow grading column and method for using an eddy flow grading column in pulp crude / fine grain grading. The eddy flow grading column comprises a frame, a pedestal is fixed at the frame, a horizontal support strip is fixed at the pedestal, a fine grain outlet pipeline is connected below the pedestal, a large valve is arranged at the fine grain outlet pipeline, a tubular cylinder is arranged at the pedestal, a cylindrical screen mesh having a coaxial line is distributed in the tubular cylinder, the cylindrical screen mesh is fixedly at a rack, the bottom of the rack is fixed at the support strip, a coarse grain outlet pipeline is connected below a middle part of the support strip, a small valve is arranged at the coarse grain outlet pipeline, an upper cover isarranged at the top of the tubular cylinder, an ore-feeding pipe and a water inlet pipe are arranged at the upper cover, a through hole is arranged at the center of the upper cover, a rotating shaftis arranged at the coaxial line of the cylindrical screen mesh, a blade spindle sleeve is arranged at the bottom of the rotating shaft, a blade is arranged at the blade spindle sleeve, the rotating shaft is driven by a motor, and the motor is arranged at the frame. The eddy flow grading column has the advantages of good grading precision and high grading efficiency.

The invention discloses a method and a system for concentrating a large graphene oxide solution. The large graphene oxide solution flows through a limited space, and is rapidly sheared in order to coagulate graphene oxide. The coagulated graphene oxide is 60 to 100mg / mL in final concentration after being filtered and collected. The coagulated graphene oxide is unfolded slowly under slow cutting, recovers to a uniform structure, and is dispersed in the solution. The method can be applied to rapid continuous concentration of the graphene oxide solution.

The invention relates to a large-flux reinforced hollow fiber membrane, wherein the separation membrane layer is composed of the following components in parts by weight: 22-30 parts of polyvinylidene fluoride, 10-20 parts of hydrophilic agent, 50-50 parts of polar solvent 60 parts, 10-20 parts of porogen, 5-10 parts of auxiliary agent, and the hydrophilic agent contains triethanolamine. The present invention adopts hydrophilic agent, auxiliary agent and polyvinylidene fluoride to blend and modify under polar solvent to reduce the surface tension of the membrane surface and the inner wall of the membrane hole, improve the hydrophilicity of polyvinylidene fluoride, and the hydrophilic agent The triethanolamine can generate hydrogen bonds with the polar bonds in the additives, so that it can maintain the hydrophilicity for a long time, improve the anti-fouling performance of the hollow fiber membrane, and maintain a high operating flux for a long time. The triethanolamine can also be adsorbed on the surface of the hollow fiber material by the hydrogen bond force, thereby enhancing the adhesion strength between the separation membrane layer and the hollow fiber, and adding the hollow fiber as a support can prevent the membrane material from breaking.

The invention discloses white aqueous jet ink. The formula of the ink comprises the following components in parts by weight: 10-50 parts of hollow polymer microsphere emulsion serving as a white pigment, 5-30 parts of filming emulsion and 10-70 parts of de-ionized water, wherein the hollow polymer microsphere emulsion contains one or more of hollow micro-spherical copolymer particles with acrylic acid-styrene, styrene-polyurethane or acrylic acid-polyurethane as shells; and the de-ionized water is filled in cavities of the microspheres. The white jet pink provided by the invention has the advantages of no precipitation, low probability of pore blockage, high whiteness, high covering power, good adhesion, stable performance, environmental friendliness, no pungent odor and suitability for being applied to inkjet printers, flat plate printers and ink jet printers.