14results about How to "Low unit price" patented technology

The invention discloses a method for catalytically hydrogenating and dehalogenating haloacetic acid or halomethane in a water body, which comprises the following steps of: catalytically hydrogenating and dehalogenating haloacetic acid or halomethane in the water body into acetic acid or methane by taking a ruthenium or platinum-containing material as a catalyst and hydrogen as a reducing agent; the noble metal in the catalyst is cheaper, and the unit price of ruthenium is far lower than that of palladium and rhodium; according to the method, the dehalogenation selectivity is higher, and compared with a palladium catalyst, the selectivity of hydrodechlorinating trichloroacetic acid in a water body into acetic acid is improved by 10.3%-15.5%; and the selectivity of trichloromethane hydrodechlorination into methane is improved by 8.6%-10.0%.

The utility model relates to the technical field of face fabric, concretely relates to a light and thin stereoscopic sense face fabric, the light and thin stereoscopic sense face fabric, including the face layer and bottom layer of laminated setting, the face layer includes face layer stereoscopic area and face layer non -stereoscopic area, face layer stereoscopic area is by the first jia ka's warp pile weave and is added the organization of second jia ka's organization and forms stereoscopic effect. The light and thin stereoscopic sense face fabric presents stereoscopic vision through the adjustment of organization structure, need not use elastic fiber, and the grammage of face fabric is low, and the unit price is also lower, and the industrialization production is easy.

The invention relates to a water jet tunneling method suitable for a five-center dome structure tunnel. The water jet tunneling method comprises the following steps that S1, a jet cutting pre-experiment of a cutting area under a tunnel face is carried out according to tunnel design; s2, measuring the cutting depth D under different jet parameters; s3, according to the cutting depth D, cutting parameters are determined, and a cutting circuit diagram is designed based on the cutting parameters; s4, cutting operation is conducted on the lower cutting area according to the cutting circuit diagram; and S5, cutting operation is conducted on the upper cutting area according to the cutting circuit diagram. According to the method, efficient, accurate, safe and reliable tunneling of the tunnel of the five-center circular arch structure is achieved, the construction quality can be improved, adaptability is enhanced, and the construction cost is reduced.

This utility model discloses a structure for a secondary lining in a mined tunnel that also serves as a shield tunneling starting reaction device. It includes a first primary support, a first secondary lining inside the first primary support, a second secondary lining on the sides of the first primary support and the first secondary lining, mortar anchor bolts on the outer side of the second secondary lining, a second primary support outside the second secondary lining, a shield machine front face on the right side of the first primary support, fiberglass anchor bolts inside the shield machine front face, and a concrete island platform at the bottom of the inner wall of the first secondary lining. The unit price of concrete is much lower than that of steel, and by utilizing the stress characteristics of concrete, costs are saved. Using a reinforced concrete structure reduces the structural dimensions and working space of the steel support, avoiding large-scale excavation. Furthermore, the reinforced concrete ring beam can later serve as a permanent secondary lining structure, reducing subsequent demolition, cutting, and other procedures and labor costs, further saving costs.

The utility model provides a tail light and electric motor car relates to car lamp technical field. The utility model provides a tail light includes bottom shell, light source subassembly and lamp shade, bottom shell is connected with lamp shade, and the end surface of lamp shade has the even light area, and the side wall has the light leakage prevention area, light source subassembly includes the substrate and a plurality of light source spare, the substrate is located between bottom shell and lamp shade, and is installed in bottom shell, a plurality of light source spare interval distribution, and all install in the end surface of substrate towards lamp shade, the light emitting angle of light source spare is arranged as alpha, 90 DEG >= alpha >= 30 DEG, with the distance of the light emitting angle coincidence of two light source spare adjacent is P, with the distance between the end surface of substrate and lamp shade is H, H >= P. The utility model provides a tail light solves the technical problem of low brightness or high development design cost in prior art.

The utility model relates to the field of motors, in particular to a rotor casing, an external rotor motor and an electronic fan, the rotor casing comprises a cylindrical outer casing and a shaft sleeve assembly coaxially arranged in the outer casing, and an accommodating cavity is formed in the shaft sleeve assembly and used for mounting a rotating shaft of a rotor; the shaft sleeve assembly comprises a shaft sleeve body and a connecting part, the connecting part is arranged on the surface of the shaft sleeve body and extends outwards in the radial direction of the shaft sleeve body, the connecting part is welded and fixed to one end of the outer shell, and the connecting part is arranged at the end, adjacent to the outer shell, of the shaft sleeve body; the connecting part is in an annular plate shape, and an inner ring of the connecting part is welded and fixed with the surface of the shaft sleeve body. The integral stretching forming mode of the rotor casing in the prior art is changed into welding and fixing through the outer casing, the shaft sleeve body and the connecting part, high die cost and working hours are saved, unit price is reduced, and the rotor casing is high in product size consistency, uniform in wall thickness and small in unbalance amount.

The utility model discloses a 1000mm belt conveyor SDJ.SSJ frame tube type lower self-aligning carrier roller frame, which belongs to the technical field of belt conveyors and comprises a lower self-aligning carrier roller frame main body, a U-shaped column, a deviation blocking vertical roller, a transverse carrier roller, a fixed sheet, a fixed bottom plate, an extension column, a bolt, a fixed upright post, a lower fixed plate, a vertical fixed sheet and a transverse fixed plate. And the self-aligning frame is convenient to install, firm and durable, easy to clean dust, convenient to disassemble and replace the carrier roller, convenient to install, simpler in structure, less in material consumption, lower in cost by 20% compared with a lower self-aligning frame of an original machine, lower in weight by 5%, convenient to install, economical and practical, so that the labor intensity of workers is reduced, and the production efficiency is improved. And the working efficiency is improved.

The present invention discloses a universal tooling for assembling and welding a coupler beam. The tooling is symmetrically arranged, and includes a platform, a clamping control unit, a pushing control unit, and a flipping control unit. The platform serves as a substrate, and the clamping control unit, the pushing control unit, and the flipping control unit are respectively arranged as hydraulic devices. The clamping control unit clamps the T-beam and the vertical plate of the coupler beam so as to clamp the coupler beam on the tooling. The pushing control unit is arranged at both ends of the T-beam on the oblique side of the coupler beam, that is, at both ends of the oblique beam, and cooperates with the slide rail to push the oblique beam inward. The flipping control unit is arranged at both ends of the T-beam, and the hydraulic force flips the T-beam outward to realize the reverse deformation before welding. The present invention adopts a hydraulic device for clamping, and has an adjustable reverse deformation function. The constant clamping force and the consistent reverse deformation state can effectively control the welding deformation of the product, and the automation degree is high, and the production efficiency is improved. The universality is high, and a set of tooling can assemble 3 categories and 5 types of coupler beam products.

The utility model discloses a mold which comprises a fixed mold and a movable mold, the fixed mold comprises a fixed mold set plate, a fixed mold core and at least one first pull row, and the first pull row and the fixed mold core are both installed on the fixed mold set plate; the movable mold comprises a movable mold set plate, a push plate, a movable mold core, an ejection mechanism, at least one second pull row and at least one third pull row, the ejection mechanism comprises an ejector pin set plate, a plurality of ejector pins and a plurality of inclined ejectors, the push plate is slidably installed on the side, facing the fixed mold, of the movable mold set plate, the movable mold set plate and the push plate are both connected with the movable mold core, and the movable mold set plate is provided with a penetrating cavity; the ejector pin set plate is located in the penetrating cavity, one end of the ejector pin and one end of the pitched roof are connected with the ejector pin set plate, the other end of the ejector pin and the other end of the pitched roof sequentially penetrate through the movable die set plate, the push plate and the movable die core, one end of the second pull row is slidably connected with the movable die set plate, and the other end of the second pull row is rotationally connected with the push plate. One end of the third pull row is rotationally connected with the ejector pin group plate, the other end of the third pull row is slidably connected with the movable module plate, and the second pull row and the third pull row are both connected with the first pull row through clamping hooks.

The utility model belongs to the technical field of automobile sunroof, especially relate to a lifting mechanism of automobile sunroof system. The utility model mainly by elastic slide, glass support, drive sliding block, front connecting rod, rotating pin, stopper, fixed guide and rear connecting rod constitute, utilize drive sliding block, elastic slide common constitute subassembly Q, utilize glass support, rotating pin riveting, front connecting rod, rear connecting rod common constitute subassembly P, subassembly Q and subassembly P common constitute assembly E, realize functional area integrated design through this mode, reduce the number of parts, reduce the cooperation chain, reduce the control difficulty, under the condition of reaching the same function demand, save the die cost and the part unit price, reduce the control cost.

The invention discloses a method and a device for sequencing batch treatment of aniline wastewater, and belongs to the technical field of wastewater treatment. The method creatively adopts a physicochemical mode of oil separation, phenolic aldehyde condensation and coagulating sedimentation to treat the high aniline wastewater, firstly, a large amount of heavy oil substances in the wastewater are removed through oil separation treatment, the interference influence on subsequent chemical reactions is reduced, and then the high aniline wastewater is treated by utilizing the principle of amine-aldehyde condensation. According to the invention, formaldehyde and aniline are subjected to condensation covalent cross-linking through aldehyde groups and imino groups to form flocs, and finally, a flocculating agent is added to enhance polymerization bridging between fine flocs to form larger flocs to be discharged, so that a large amount of aniline and derivatives thereof in wastewater can be efficiently removed, and the concentration of organic matters in wastewater is reduced; and the biotoxicity of the wastewater is reduced, so that the consumption of additional nutrient substances in a biochemical treatment method is reduced, the operation cost of a subsequent biochemical treatment method is reduced, and the effect of the subsequent biochemical treatment method of the wastewater is powerfully guaranteed.

This application relates to the field of synthesis, disclosing a method and equipment for preparing nitrate ions. The method includes: subjecting a first mixture containing a solid catalyst and a liquid substance to ultrasonic vibration or ball milling under contact with a nitrogen-containing gas to obtain a second mixture containing nitrate ions; filtering the second mixture to remove the solid catalyst to obtain a solution containing nitrate ions. This preparation method can be carried out at room temperature and pressure, greatly reducing energy consumption and achieving zero carbon emissions.

The present invention provides an electromagnetic magnetic levitation motor operation abnormality reminder method, system and device, which belongs to the electromagnetic magnetic levitation motor technical field, and comprises the following steps: T1: when the chip is running, obtain the value of continuous jitter and store it in an ordered element sequence M a Internal; T2: for an ordered sequence of elements M a Execute machining structure stop standard value Q a ; T3: When the chip is asleep, obtain the jitter value and store it in an ordered element sequence M b Internal; T4: Parse the ordered sequence of elements M c Maximum value and Q a The present invention solves the problem that the electromagnetic levitation motor cannot distinguish whether the current tremor generated by the electromagnetic levitation motor is normal tremor or abnormal tremor, and then cannot perform maintenance on the electromagnetic levitation motor in time, resulting in damage to the electromagnetic levitation motor, which may cause casualties and major economic losses in severe cases.

The invention provides a graphene modified coating as well as a preparation method and application thereof, and belongs to the technical field of coatings. According to the graphene modified coating provided by the invention, although the use amount of the zinc powder is reduced, the cathode protection function provided by the zinc powder cannot be reduced under the action of the graphene, and the compactness of a paint film is increased under the action of the graphene (by adding the graphene, reducing the use amount of the zinc powder, reducing expanded'points' and improving the structural compactness of the paint film); therefore, the difficulty that a corrosive medium invades a paint film and a base material is increased, and the corrosion resistance is enhanced; and under the same process film thickness, the salt spray test duration is prolonged by 50-100% compared with that of the coating in the prior art, which further shows that the corrosion resistance is improved.