33results about How to "Short transfer distance" patented technology

The invention discloses a carbon nitride / hydrogen treated tungsten trioxide two-dimensional composite Z-type photocatalytic material, a preparation method and an application. The material is composed of Pt-supported ultrathin carbon nitride nanosheets (Pt‑CN / NS) and hydrogen-treated tungsten trioxide (HWO); among them, Pt‑CN / NS has a curled two-dimensional network structure; hydrogen The treated tungsten trioxide is a two-dimensional nanosheet; the composite of Pt-CN / NS and HWO is a two-dimensional surface-contact composite; the mass ratio of Pt-CN / NS and HWO is 0.5:1-40:1. Based on the Z-type photocatalytic mechanism, the prepared photocatalytic material has high utilization rate of visible light, low carrier recombination rate, high-efficiency visible light splitting water hydrogen production activity, and visible light catalytic hydrogen production activity can reach up to 862 μmol h ‑1 , the apparent quantum yield under 420nm monochromatic light is 16.6%. The present invention has rich raw materials, simple synthesis process, easy to control operation, high separation efficiency of photogenerated charges, and largely overcomes g-C 3 N 4 The serious problem of carrier recombination has great application prospects in the field of photolysis of water.

The invention discloses a method for treating nitro aromatic hydrocarbon substances by polydopamine reduced carbon nitride supported nano-gold catalysts. The nano-gold catalysts are added into the nitro aromatic hydrocarbon substances and mixed solution containing BH4- salt, and degradation is performed. The nano-gold catalysts include polydopamine-carbon nitride supporters and nano-gold particles, the polydopamine-carbon nitride supporters are formed by automatically polymerizing dopamine on the surface of carbon nitride, the nano-gold particles are reduced by polydopamine on the supporters,the polydopamine coats the flaky carbon nitride in an amorphous form, the nano-gold particles are supported on the surfaces of the polydopamine-carbon nitride supporters, the mass ratio of the nano-gold particles to the polydopamine-carbon nitride supporters is (1-4):30, and the mass ratio of the polydopamine to the carbon nitride is (0.8-1.2):1. The method has the advantages of simplicity in operation, rapidness in reaction, easiness in recycling of the catalysts, high degradation efficiency and the like, and can be widely applied to treatment of nitro aromatic hydrocarbons.

The invention relates to a non-polyvinyl chloride (PVC) large-transfusion production assorted device, in particular to a novel dislocation soft bag transfer device, which is characterized in that: a lower cylinder connecting plate is arranged on a rodless cylinder; a lower bag assembly and a turnover base are arranged at the bottom of the lower cylinder connecting plate; one end of the turnover base is provided with a detection device and a limit installation plate, and the other end of the turnover base is provided with a rotary cylinder; the outer side of the rotary cylinder is provided with a limit device; a limit block is arranged on the limit device; the inner side of the rotary cylinder is connected with a turnover shaft in the turnover base; and a support base is arranged on the turnover shaft and corresponds to the lower bag assembly horizontally. The novel dislocation soft bag transfer device is simple and stable in a structure, compact in positions but not tight, simplified in action, short in transfer distance and reliable in stability, solves the key problem of the development of soft bag large-transfusion production lines, and pushes the development of dislocation soft bag production lines to a new high.

The invention discloses a positioning type tail irrigation soft bag transfer device. The down-pressing cylinder of the down-pressing assembly is fixed on the cylinder fixing plate, the down-pressing plate is fixed on the down-pressing cylinder, and the cylinder fixing plate is fixed on the frame; The bag fixing plate is fixed on the overturning shaft, the overturning cylinder is fixed on the overturning shaft fixing plate, the overturning shaft is connected with the overturning cylinder, the ejection assembly is fixed on the overturning shaft, and the overturning shaft fixing plate is fixed on the transfer assembly; The ejector plate is fixed on the ejector cylinder, and the ejector cylinder is connected with the flipping assembly through the ejector cylinder fixing plate; the adjustment assembly of the transfer assembly is fixed on the frame, and the electric cylinder is fixed on the adjustment assembly through the electric cylinder fixing plate, and the flipping The component fixing plate is fixed on the electric cylinder. The structure of the invention is reasonable and convenient, the transfer distance is short, stable and reliable, and can effectively cooperate with the production operation of the tail irrigation soft bag production line with a linear layout, and is used for soft bag transfer.

A carbon nanotube composite material with a hierarchical structure, characterized in that: the carbon nanotubes of the hierarchical structure are composed of thin carbon nanotubes with a diameter of 5-10nm and thick carbon nanotubes with a diameter of about 200nm, The thick carbon nanotubes have a branch structure, and the thin nanotubes are helically wound on the surface of the thick carbon nanotubes. The carbon nanotube composite material with hierarchical structure of the present invention improves the electrochemical performance of the material, and its power density reaches 73.2Wh·kg ‑1 , when the current density is 1A / g, its specific capacitance is 252.6F / g, which is 1.4 times that of branched carbon nanotubes with a single thick tube diameter. It has excellent cycle stability and remains extremely high after 10,000 cycles. capacitance retention rate.

A static frequency measuring method for classifying piezoelectric ceramic chips and devices features that said chips or devices are conveyed on an electromagnetically vibrating channel, a pair of movable electrodes are in contact with the both surface of chip or device at measuring position while a measuring frequency is applied to it, the oscillation signal generated by the chip or device is received, and the chips or device are classified by controller according to said signals. Its advantages are correct positioning and software control.

The invention discloses an automatic packaging device and a packaging process for an LCD display screen, including a feeding device, a packing station, an intermediate station, a transfer component, and a discharging device; the feeding device includes an empty box feeding position, an LCD The feeding level of the display screen and the feeding position of the interval protection foam; the transfer component moves the empty box of the packing box, the LCD display screen, and the interval protection foam to the packing station for packing work, and the packing box is full after packing. The output is transferred to the intermediate station for transfer, and finally the material is conveyed and discharged by the discharging device; the intermediate station is a double-layer structure, including the middle upper station and the middle lower station, and the packing station includes a liftable structure, so that the packing station It can be lifted and lowered between the horizontal heights of the middle upper station and the middle lower station; the middle lower station is the output channel for the packed boxes, and the middle upper station is the inflow channel for the empty boxes. The invention solves the problems of unsmooth flow of the LCD display module packaging line, too many repeated actions, poor stability and low efficiency.

The present invention is specifically an intelligent micro-hub based on multi-network integration, which integrates information and facility intelligent comprehensive hubs including rail transit, buses along the line, taxis, shared bicycles and other transportation modes. Through the establishment of a micro-hub information system, information analysis and processing is carried out on bus operation data, taxi operation data and shared bicycle delivery data, and transfer information is provided to users. Through the analysis of user transfer data, an operation scheduling optimization plan is generated for operation. to adjust the operating plan. The intensive land use layout of the micro-hub is realized through the optimization of operation scheduling. By establishing a new type of intelligent micro-hub system, the present invention creates a comprehensive data processing platform that integrates data of various traffic modes, establishes a corresponding intelligent information processing system with algorithm-based machine learning and deep learning models, and finally achieves intensive land use, Continue to improve the efficiency of user transfers and continue to optimize the passenger flow collection and distribution efficiency of the overall micro-hub.

The invention relates to a construction method for implementing transfer between a platform floor of the existing subway station and a platform floor of a new subway station. The construction method comprises the following steps of constructing the platform floor of the new subway station to a pedestrian path below a structural bottom plate of the existing subway station; reinforcing strata surrounding the pedestrian path; dividing a structural bottom plate longitudinal beam of a passageway which is arranged at a position of a table board of the existing subway station and is connected to the pedestrian path into a left portion and a right portion; respectively constructing the left portion and the right portion; correspondingly constructing surrounding rock of an excavation structure at a position of a structural bottom plate longitudinal beam on a side wall of a constructed pedestrian passage structure; breaking down a waterproof layer, a reinforcement cover, construction preliminary bracings and cross braces, a construction waterproof layer and assembling reinforcements on a structural bottom plate portion of a platform of the existing subway station; connecting a new structure and the existing structure by using embedded steel bars; pouring side walls and middle walls; constructing another structural bottom plate longitudinal beam to obtain a complete passageway structure; finishing construction of the passageway of the pedestrian path; and connecting the platform floor of the existing subway station to the platform floor of the new subway station. A construction process is safe, the practicability is high, and normal operation of the existing subway lines is not affected.

Provided is an automatic steel-bar straight-thread threading machining equipment and machining method. The automatic steel-bar straight-thread threading machining equipment and machining method can improve the work efficiency and the machine quality of steel bar heads and provide good quality assurance for connection of steel bars. According to the technical scheme, the automatic steel-bar straight-thread threading machining equipment is composed of steel bar feeding bracket set (1), steel bar rib stripping and thread rolling equipment (2), steel bar machining bracket set (3) and a manipulator (4), wherein the steel bar feeding bracket set (1) is located on one side of the steel bar rib stripping and thread rolling equipment (2); the steel bar rib stripping and thread rolling equipment (2) is composed of two steel bar cylindrical turning devices (5) and two steel bar thread rolling devices (6) which are arranged in a head-to-head mode respectively, and the steel bar cylindrical turning devices (5) and the two steel bar thread rolling devices (6) are arranged in parallel. The invention further discloses an automatic steel-bar straight-thread threading machining method.

The invention discloses a polydopamine reduced carbon nitride loaded nanogold catalyst and a preparation method thereof. The catalyst comprises a polydopamine-carbon nitride carrier formed by auto-polymerization of dopamine on the surface of carbon nitride and nanogold particles reduced by polydopamine on the carrier, polydopamine amorphously coats sheet carbon nitride, the nanogold particles areloaded on the surface of the polydopamine-carbon nitride carrier, a mass ratio of nanogold to polydopamine-carbon nitride carrier is 1-4:30, and a mass ratio of polydopamine to carbon nitride is 0.8-1.2:1. The catalyst has the advantages of being efficient, environment-friendly, safe, high in stability and easy to recycle and is an efficient-catalysis environment-friendly gold catalyst which can be widely applied. The preparation method has the advantages of mild reaction condition, simple preparation process and environment friendliness and can be used for large-scale preparation.

The invention discloses a preparation method of composite zeolite with a core / shell structure, belonging to the fields of fine chemical engineering and inorganic materials. The preparation method is characterized by being a preparation method of composite zeolite taking high-silicon Y type zoelite as a core and taking nano-polycrystalline ZSM-5 zeolite as a shell. The method takes the high-silicon Y type zoelite as a raw material and obtains the product by one-step crystallization by using a conventional template. According to the preparation method, the difficulty that the conventional methods cannot synthesize the core / shell type composite zoelite which takes Y type zoelite as a core and takes ZSM-5 zeolite as a shell is solved. The shell layer is a nano-polycrystalline ZSM-5 zeolite layer, and from the shell to the core, the spreading course is unique, the spreading route is greatly shortened and a hierarchical pore structure among nanocrystals exists on the surface, so that the composite zeolite with the core / shell structure has potential application value in the aspects of catalytic cracking, hydrogen cracking and the like in the fine chemical engineering and the petrochemical engineering.