43results about How to "Simple and economical to operate" patented technology

This is a method of filtration of a liquid comprising steps of sequential filtration of said liquid through at least one deep bed medium producing at least one first filtrate followed by at least one membrane medium filtration producing at least one second filtrate, wherein said membrane medium is at least periodically within said deep bed media Many types of deep bed and membrane media can be used. The domain of using contact clarification (direct filtration) can be expanded towards greater solids concentration. Operation and backwash, is simplified, continuous filtration becomes possible. Water can be water from natural source water, process water, wastewater, aqueous or non-aqueous suspensions, emulsions, solutions. Treatment can include mechanical interception of suspended particles, chemical, physical chemical, electrochemical, and biological processes. In water and wastewater processing, control over suspended solids, BOD, COD, nitrogen and phosphorus compounds, bacteria and viruses, heavy metals, color, and other constituents can be dramatically improved as compared to conventional processes. The method can be accommodated in new and modified existing treatment systems.

A film of a polymer or polymer precursor such as an epoxy resin is autodeposited on an active metal surface and then used to form an adhesive bond directly between the metal surface and the surface of a rubber substrate. Excellent adhesion of the metal to the rubber is obtained without the need to either phosphate the metal surface or use a primer or adhesive other than the autodeposited coating.

The invention relates to the field of composite electroplating technology, and particularly relates to a preparation method for a nano-composite high-tin copper alloy electroplating material. The preparation method comprises the steps of adding a certain amount of Al2O3 nano powder (with average particle size of less than 100nm) into pyrophosphate electroplating copper-tin alloy plating solution, stirring bath solution by a stirrer in the preparation process, fully suspending in the plating solution to avoid the clustering of the nano powder, reducing metal ions by utilizing the electro-deposition principle, embedding nano alumina into a plating layer, to reduce holes and cracks on the surface of the plating layer. The surface of the prepared coating is compact, and the microhardness distribution is relatively even.

The invention discloses a test device for simulating the tunnel excavation process. The test device comprises a test box. A dial indicator rack is suspended on the top of the test box. An embedded body is embedded in the bottom of the test box. The test box is filled with a soil mass simulation material. The embedded body comprises a first tunnel excavation test body, a middle partition test body and a second tunnel excavation test body. The first tunnel excavation test body and the second tunnel excavation test body are of the same structure. The first tunnel excavation test body sequentially comprises a primary support simulation layer, a secondary lining simulation layer and a mountain simulation piece from outside to inside. The mountain simulation piece comprises a plurality of plates which are arranged in parallel and detachably connected. By means of the test device, ground surface deformation data can be collected, stress data of a middle partition, a primary support and a secondary lining is collected at the same time, the process of simulating mountain excavation is changed into the process of taking out the simulation piece in a layered mode piece by piece through the platy layered mountain simulation piece, detachment is convenient, and the contour left after detachment is smoother.

A filter device purifies fluids, especially fuels contaminated with organic substances. Hydroxyl radicals are formed from water molecules contained in the fluids by a separating device (10, 14, 22). The hydroxyl radicals oxidize the impurities, especially organic substances, as much as possible and convert them into compounds such as CO2.

The present invention provides a building block for constructing a passage in a building for passing water pipe line, electric cables, gas pipelines, internet cable, set top box cables, and the like. The building block is having at least one channel extending across a body of the building block. The building block further has a lid for closing and opening the channel. According to the present invention, a plurality of building blocks when arranged in predefined sequence in at least a wall, roof and flooring of the building, pathways, it creates the passage for circulating wiring or pipelines therethrough and the lid can be open for maintenance purpose thereby preventing structural damage to the building. The building block has an advantage of inbuilt channel with removable lid, which reduces the time in cutting and drilling in the wall.

A vehicle structure sub-unit includes a cross-member of metal material and two crash-box modules with their front surfaces welded or glued to the rear wall of the cross-member. A reinforcing metal plate is interposed between the front surface of at least one of the two crash-box modules and the rear wall. The rear wall has a depressed flat portion in which the reinforcing plate is received, in such a way that the surface of the reinforcing plate facing the crash-box module is substantially flush with the surface of the rear wall. A depressed portion of the rear wall is located in an offset position, closer to the center of the cross-member, with respect to the crash-box module, in such a way that the reinforcing plate is in contact only with a part of the front surface of the crash-box module, the remaining part of the front surface being in direct contact with the rear wall.

The invention relates to a method for puncturing an iron core by a motor wire-insertion preventing winding, which is technically characterized in that: tips around the opening of wire-insertion grooves at two end faces of the iron core are firstly shaped into rounded corners R and an insulating end plate is then bonded when stators and rotors and magnetic pole iron core of the motor are manufactured; and the winding is led out of the opening of the end plate of the iron core with a particular linear section away from the end plate when the wire insertion for stator assembly and magnetic pole assembly is implemented so as to lower the possibility of causing the opening of the insulating end plate to deformation; the method according to the invention can effectively avoid the insulating damage of the winding after the wire insertion of the motor winding and guarantee the processing quality and the reliability of stator, rotor assemblies of the motor. Such technique is simple and economical in operation, easy for popularization and application, capable of bringing a great many economic and social benefits and suitable for the manufacturing of insertion winding assemblies, such as rotor assembly and stator assembly of the motor with the insulating end plate, etc.

The invention relates to a functionalized united imidazole derivative and a synthesizing method thereof. More particularly, the functionalized united imidazole derivative is a derivative of 1, 1-dsubstituted united imidazole acidamide, united imidazole carboxylic acid or united imidazole amine shown by formula I, wherein n is equal to 1 or 2; and X is acylamino, carboxyl or amido. A method for preparing the united imidazole acidamide comprises: taking united imidazole as raw material and N, N-dimethyl formamide as solvent; and leading the united imidazole and the N, N-dimethyl formamide to have Michael addition or nucleophilic substitution reaction together with acrylamide and chloroacetamide under the alkali condition, and obtaining the united imidazole acidamide; a method for preparing the united imidazole carboxylic acid comprises: taking united imidazole nitriles derivative as raw material, and having hydrolysis reaction under the acidic condition to obtain the united imidazole carboxylic acid; a method for preparing the united imidazole amine comprises: taking the united imidazole acidamide as raw material, and carrying out Hofmann degradation to obtain the united imidazole amine; and the united imidazole derivative also can be further modified by alkylation, and the functionalized ionic liquid material can be obtained by carrying out quaternization on imine of imidazole ring. As activated side chain radical is introduced, further derivatization can be carried out.

The invention relates to a preparation method of lactide-modified polyether polyol, which mainly solves the technical problem of long polymerization time in the preparation process of lactide-modified polyether polyol, by adopting the preparation method of lactide-modified polyether polyol , including the use of double metal cyanide complex catalysts, with active hydrogen atom-containing compounds as initiators, ring-opening copolymerization of olefin oxide and lactide; wherein the double metal cyanide complex catalysts contain The following components: a) 40-99.8 parts of double metal cyanide mixture; b) 0.1-30 parts of C4-C10 tertiary alcohol technical solution, which solves the technical problem well and can be used for lactide modified poly In the industrial production of ether polyols.