15results about How to "Improve drainage effect" patented technology

The invention discloses an anion exchange membrane electrode and a preparation method and application thereof, and belongs to the technical field of new energy material and catalytic electrode preparation, the method comprises the following steps: S1, preparing an anode catalyst slurry comprising a hydrophobic covalent organic framework material, an anode catalyst, an anion exchange ionomer and a solvent; s2, preparing a cathode catalyst slurry of which the components comprise a cathode catalyst, an anion exchange ionomer and a solvent; and S3, respectively spraying or coating the anode catalyst slurry and the cathode catalyst slurry on two side surfaces of an anion exchange membrane or a gas diffusion layer, and carrying out heat treatment to obtain the anion exchange membrane electrode. The method provided by the invention can solve the problems of large gas-liquid-ion three-phase mass transfer resistance, easy shielding of active catalytic sites by ionomers and unbalanced water management in the membrane electrode assembly in the existing AEMWE device.

This application relates to the technical field of drainage devices, and provides a postoperative irrigation and drainage mechanism, including an irrigation tube and a drainage tube. The outer diameter of the irrigation tube is smaller than the inner diameter of the drainage tube. The irrigation tube includes an inlet section and an irrigation section that are interconnected. The central axes of the inlet section and the irrigation section are not on the same straight line. An inlet is provided on one side of the drainage tube, and the inlet section extends out of the inlet. The irrigation section is located inside the drainage tube and is arranged along the inner wall of the drainage tube. The length direction of the irrigation section is consistent with the length direction of the drainage tube. Several side holes are provided on the side of the drainage tube along its length direction. Based on this, clogging of the drainage tube can be avoided as much as possible, and the drainage effect can be improved.

The utility model relates to the technical field of medical auxiliary instruments, in particular to a drainage tube for drainage after head and neck thyroid surgery and an auxiliary structure, which comprises an application pressing sheet, neck bandages are connected to the left side and the right side of the application pressing sheet, one end, far away from the application pressing sheet, of each neck bandage is connected with an adhesive tape, and the adhesive tape is connected with a drainage tube for drainage after head and neck thyroid surgery. A pipe inserting base is arranged in the middle of the top of the application pressing piece, fixing vertical plates are arranged on the portions, located on the left side and the right side of the pipe inserting base, of the top of the application pressing piece, and extrusion springs are connected to the tops of the inner sides of the fixing vertical plates in a longitudinal symmetry mode. The auxiliary structure of the drainage tube can be used for carrying out auxiliary supporting and fixing on the connecting end of the drainage tube body and the neck, the supporting force can prevent the connecting end from being folded and shrunken due to the action amplitude, and therefore the drainage effect is improved.

The utility model discloses a waterproof device for doors and windows, belongs to the technical field of waterproof of doors and windows, and solves the problems that a window sash of an existing device is easy to cause downward bending of a transverse groove plate, so that the sliding of the window sash is not smooth, the transverse groove plate is horizontally arranged, the flowing speed of water on the top surface of the transverse groove plate through a through hole is slow, and the drainage effect is poor. Comprising a door and window frame, and a groove is formed in the inner wall of the door and window frame; a lower supporting plate with the section in a right triangle shape is fixedly installed on the inner wall of the bottom side of the groove, drainage holes distributed in a linear array mode are formed in the bottom end of the outer vertical face of the groove, and a first guide rail and a second guide rail which are vertically arranged are arranged on the top face of the lower supporting plate. The first guide rail and the second guide rail are supported through the lower supporting plate so that the window sash can smoothly slide on the first guide rail and the second guide rail, rainwater in the groove can be gathered on the top face of the lower supporting plate, then the rainwater flows towards the outer vertical face along the top face of the lower supporting plate, and the rainwater drainage rate can be increased.

The application discloses a precision filter for chemical production and processing and a processing method thereof, and relates to the technical field of sodium benzoate preparation, which comprises a fixed base, a partition disc and a cleaning assembly. The top of the fixed base is welded with a shell, the outer surface of the shell is provided with a visual window, and the left side of the shell is connected with a water inlet pipe. The precision filter for chemical production and processing and the processing method thereof have the following advantages. The preparation liquid in the shell is filtered by the outer filter shell first, and then filtered by the inner filter pipe. In addition, the top cover is moved upwards to drive the pull rod and the limiting cover to move upwards, so that the plug is separated from the plug hole, and the connecting seat is separated from the pipe. The improved precision filter is used in cooperation with the outer filter shell and the inner filter pipe, so that the double filtering purpose is achieved, the filtering effect is improved, the disassembly and assembly process of the inner filter pipe is simplified, and the regular replacement of the inner filter pipe is facilitated.

The present application relates to a kind of air duct systems, including shell, motor assembly housed in shell and the air duct mechanism of cooling motor assembly, motor assembly has fixed stator in shell and the rotor of passing in stator, air duct mechanism has the drive fan installed in rotor, drive fan rotation generates cooling gas, air duct mechanism includes by the flow guide member rotated by cooling gas, first air duct formed between stator and shell and the second air duct independent of first air duct, second air duct is at least partially downstream of flow guide member, and, angle grinder using the air duct system has excellent heat dissipation performance and dustproof performance.

This application relates to the field of irrigation technology, specifically disclosing a water-saving irrigation and drainage device for farmland, including a buried infiltration body, a water storage tank, a sprinkler assembly, and a surface pumping assembly. The buried infiltration body is installed below the field surface. The water storage tank is connected to both the buried infiltration body and the sprinkler assembly via pipes, and the surface pumping assembly is connected to the pipes connecting the water storage tank and the sprinkler assembly. Compared to existing technologies, this application not only utilizes the buried infiltration body to collect excess groundwater but also treats surface water accumulation through the surface pumping assembly, significantly improving drainage efficiency. Simultaneously, the entire device stores the collected water for irrigation, improving irrigation water efficiency and avoiding water waste. Moreover, the connections between the components are simple and reasonable, making construction relatively easy. A single buried infiltration body can be installed underground independently, eliminating the need for extensive field excavation and reducing construction difficulty.

The utility model provides a kind of wind wall air conditioning unit, wind wall air conditioning unit includes shell, first fan module, second fan module, surface cooler and electric appliance box;First fan module, second fan module and electric appliance box are all arranged on the front side wall of shell, first fan module and second fan module are arranged along the first direction, and electric appliance box is located between first fan module and second fan module;Surface cooler is located in shell, and the airflow entering shell is sent out by first fan module and second fan module after heat exchange by surface cooler;Relative to the first direction, electric appliance box is inclinedly arranged;Electric appliance box is provided with top wallboard and back wallboard, top wallboard is inclined to first fan module and guides airflow to first fan module, and back wallboard is inclined to second fan module and guides airflow to second fan module.The wind wall air conditioning unit can avoid the disorder of airflow in the unit caused by the blockage of electric appliance box, resulting in poor heat exchange efficiency and affecting the energy efficiency of the unit.

The invention relates to a foundation pit slope supporting structure capable of being completely recycled and reused and a construction method. The foundation pit slope supporting structure comprises a plurality of supporting units and ground anchors used for fixing the supporting units to a foundation pit slope. The supporting unit comprises a supporting bottom plate; an assembly structure is arranged on the supporting bottom plate; the assembling structure comprises a buckle plate arranged opposite to one side face of the supporting bottom plate and a baffle arranged on the side, opposite to the buckle plate, of the supporting bottom plate. The baffle and the supporting bottom plate are arranged at intervals, and a drainage groove is formed between the baffle and the supporting bottom plate. Mounting grooves are formed between the buckle plate and the supporting bottom plate at intervals; when the adjacent supporting units are assembled, the baffles are arranged in the mounting grooves to form non-fixed connection; the middle of the supporting bottom plate is further provided with a rivet receding hole used for installing a rivet. Through the recoverable design of the supporting units and the anchor nails, materials are recycled, water pressure generated by rainwater is dredged in time through the drainage grooves in the assembly structure, and the situation that a supporting system is damaged due to water pressure accumulation of a supported soil slope is avoided.

The invention provides a plain river network area flood drainage project design scale determination method and device, and the method comprises the steps: firstly generating a design flood process line and a design tide level process line of a plain river network area based on the tide level observation data and rainstorm data of the plain river network area over the years; then, based on the underwater topographic data of the plain river network area regulation and storage water body, establishing a corresponding relation between the water level and the volume of the plain river network area regulation and storage water body; determining the highest flooding control water level of the plain river network area based on the planning information and the topographic information of the plain river network area; and finally determining the design scale of the flood drainage project of the plain river network area based on the designed flood hydrograph, the designed tide level hydrograph, the corresponding relation, the highest flood control water level and the parameter information of the flood drainage project of the plain river network area. By adopting the method, the rationality of the plain river network area drainage engineering design can be effectively improved.

The invention relates to the technical field of heat exchangers, in particular to a titanium alloy double-tube-plate heat exchanger for high-viscosity fluid, which comprises a heat exchanger shell, tube plates, end sockets, heat exchange tubes, baffle plates and spoilers, the two tube plates are fixedly and symmetrically mounted at the two ends of the heat exchanger shell, the end sockets are fixedly mounted at the ends of the two tube plates, and the two end sockets are fixedly mounted at the two ends of the heat exchanger shell. A plurality of heat exchange tubes are vertically and fixedly installed between the two tube plates, a plurality of baffle plates are arranged in the heat exchanger shell, and the spoilers are rotatably installed on the baffle plates. The flow direction of the high-viscosity fluid is changed through the spoilers, so that the high-viscosity fluid makes full contact with the heat exchange pipes, the heat conduction efficiency is improved, meanwhile, the spoilers can rotate on the baffles through the flow power of the fluid, the high-viscosity fluid is converted into a turbulent flow state from a laminar flow state, and the heat exchange efficiency is further improved.

The invention discloses a multi-channel double-layer membrane blood cell interference resisting electrochemical test piece and application thereof, and belongs to the technical field of electrochemical test pieces, the multi-channel double-layer membrane blood cell interference resisting electrochemical test piece comprises a base material, a sensing electrode, a top sealing layer and a double-layer membrane structure composed of an enzyme reaction membrane layer and a blood cell filtering membrane layer, and the double-layer membrane structure is located above the sensing electrode. According to the invention, a completely independent multi-channel microfluidic system is realized through physical structure partition, and a three-dimensional bulge structure is arranged at a blood inlet of each microfluidic channel, so that the blood suction starting speed and the sample entering efficiency are remarkably improved, and the problems of unstable blood suction efficiency and difficulty in avoiding cross interference of the existing multi-channel design are solved on the structural aspect. According to the invention, a double-layer membrane structure is adopted, a physical filter membrane layer with a stable aperture structure is constructed by blending PU / PVA, and the physical filter membrane layer is superposed on a glucose dehydrogenase reaction layer, so that red blood cells are prevented from entering a detection area from the source, and the influence of HCT on signals is reduced.

The invention relates to a cationic COF-doped AEM electrode and a preparation method and application thereof.The preparation method comprises the steps that a covalent organic framework material (COF) which is small in particle size, good in alkali stability and rich in cationic groups is adopted as filler and is blended with a cathode catalyst and an ionomer through ultrasonic dispersion, and cathode catalyst slurry is prepared; and preparing the anion exchange membrane electrode with uniform COF dispersion and excellent performance by adopting a catalyst coating membrane technology or a catalyst coating substrate technology, and applying the anion exchange membrane electrode to the field of water electrolysis hydrogen production. A regular one-dimensional pore channel of the cationic covalent organic framework can provide a rapid transmission channel for gas-liquid transmission, and abundant cationic groups are beneficial to formation of a high-efficiency hydroxyl ion conduction channel, so that the mass transfer efficiency of gas, liquid and ions is remarkably improved, a three-phase reaction interface of a catalyst, gas and water is optimized, and the catalytic activity of the catalyst is improved. Therefore, the overall electrolytic hydrogen production performance is improved.

The invention provides a novel nano-antibacterial minimally-invasive Siphon drainage structure and a using method thereof, and relates to the technical field of medical instruments.The drainage structure comprises a drainage tube and porous dressing, a through hole is formed in the working face of the porous dressing, the drainage tube is connected with the through hole in an inserted mode, the interior of the drainage tube is hollow, a hollow tube is arranged on one side of the drainage tube, and the drainage tube is connected with the porous dressing in an inserted mode. A plurality of small holes are formed in the working face of the other side of the drainage tube. Wedge-shaped grooves are symmetrically formed in the two sides of the drainage tube. The use method of the drainage structure comprises the following steps: S1, connection: connecting one side, with small holes, of the drainage tube with the porous dressing; s2, placing: placing one end, far away from the drainage tube, of the hollow tube between two suture lines of the wound; s3, drainage: wiping the skin around the wound, covering the wound with the porous dressing, and sealing the wound with a transparent film to prevent air leakage.