304results about How to "Guaranteed patency" patented technology

The invention provides a preparation method and forming fixture of a membrane electrode of a proton exchange membrane fuel cell. The preparation method comprises the following steps of: sequentially stacking a catalyst cathode layer, a proton exchange membrane layer and a catalyst cathode layer between two flat plates which are placed in parallel, wherein the flat plates are provided with screw holes and are connected through a bolt; setting the torque as 0.5-5 N m, and compacting the two flat plates and fixing the relative positions; heating the fixed two flat plates as well as the catalyst cathode layer, proton exchange membrane layer and catalyst cathode layer between the two flat plates at 140-300 DEG C for 2-30 min before taking out; and removing the flat plates to obtain the membrane electrode of the proton exchange membrane fuel cell. Experiment proves that: the membrane electrode prepared by the method has relatively excellent discharge performance, and the preparation technology is easy to operate and does not need a relatively expensive high-precision mould press. Therefore, the preparation of the membrane electrode using the method is easy to operate, the cost is low, and the electrochemical performance of the membrane electrode is excellent.

The invention relates to the field of building foundations, in particular to a method for dredging a soft foundation by dredger fill and reinforcement. The method includes: a, zoning for dredger fill; b, forming a primary drainage system; and c, performing layered and zonal filling and reinforcement. The method is characterized in that in zoning for dredger fill, each filling unit (11) is 20000m<2>-50000m<2> in area; in formation of the primary drainage system, digging crisscross blind ditches (31) on the surface of the filling unit (11), and laying corrugated filter pipes (32) and drain boards (33) on the surface for the filling unit (11); and in layered zonal filling and reinforcement, filling the filling area (1) level by level, and reinforcing with all levels of drainage networks. The method is convenient in construction, short in construction period, effective in foundation treatment and low in construction cost.

The invention provides a fixture used for moulding of a proton exchange membrane fuel cell membrane electrode and a preparation method for the proton exchange membrane fuel cell membrane electrode. The preparation method comprises the following steps: membrane electrode components are placed between a first flat plate and second flat plate of the fixture in sequence; torque of a lead screw of the fixture is set as 0.5 Nm to 5Nm and a fastening lead screw abuts against the second flat plate through a screw hole in the first flat plate; and the fixture is heated at a temperature from 140 DEG C to 250 DEG C for 2 min to 30 min so that the proton exchange membrane fuel cell membrane electrode is obtained. According to the fixture used for moulding of the proton exchange membrane fuel cell membrane electrode and the preparation method for the proton exchange membrane fuel cell membrane electrode, the fixture is formed by the first flat plate and the second flat plate and the like and a mould pressing method for preparation of the membrane electrode is regulated, so that the discharging performance of the membrane electrode is good and electrochemical performance of a fuel cell can be improved. The preparation method for the proton exchange membrane fuel cell membrane electrode is simple and easy to operate, low in cost due to the fact that expensive mould pressing equipment is not needed and beneficial to popularization.

The invention provides an inner-chip removal polycrystalline diamond compact (PDC) bit, which comprises a bit body, a cutting portion and mudproof packages, wherein a connecting head is formed on the upper end of the bit body, a gauge protection portion is formed on the lower end of the bit body, an inner cone hole is formed in the bottom end of the gauge protection portion, and a chip removal cavity which is run through along the axial direction is arranged in the bit body, and is communicated with the inner cone hole. The cutting portion is connected on the bottom end of the gauge protection portion, and is provided with a plurality of spiral knife blades, and the spiral knife blades are convexly arranged on an inner cone surface of the inner cone hole along the peripheral direction. The mudproof packages are connected on the lower end of the gauge protection portion and are arranged between the every two spiral knife blades. The inner-chip removal PDC bit has an active mudproof package function, prevents forming a bit mud package during the drilling process, and meets the demands of self-buried drilling to the functions of PDC bits.

The invention provides a mobile operation system and method for water and electricity production management for solving the problems existing in an existing water and electricity production management information system.The system comprises a mobile application server and a mobile application client side.The mobile application server achieves the functions of service data exchange, auditing supervision and control and operation instruction sending; the mobile application client side achieves the functions of two mobile tickets, mobile defects, mobile polling, technical supervision, mobile KPI, basic data and the like.According to the method, the mobile operation system is adopted, front-line staff achieves on-site execution of two tickets, defect compilation, checking and elimination, polling information receiving, recording and reporting, technological supervision test data on-line collection and other work contents, management staff obtains service data information conditions of the two tickets, the defects, polling, technical supervision and the like, and on-line analysis of capital equipment overhaul conditions is carried out through KPI.By means of the mobile operation system and method, smoothness of on-site operation procedures and data accuracy can be effectively ensured.

The invention relates to a wind guiding structure of an electric oven. The wind guiding structure comprises a hot air blower blocking plate, blades, a driving mechanism, and a controller; the four sides of the hot air blower blocking plate are firmly arranged on the internal wall of an inner container housing of the electric oven, and the hot air blower blocking plate is provided with wind outlets; each blade is connected with the hot air blower blocking plate in a rotation manner at one side of a corresponding wind outlet; the driving mechanism is connected with the controller through electric connection; the driving mechanism is capable of driving the blades to rotate under controlling of the controller, so that opening and closing of the wind outlets are realized. According to the windguiding structure of the electric oven, the blades with adjustable opening degrees are arranged at the wind outlets, the blade opening degrees can be adjusted based on different using situations of the inner container of the electric oven, smooth flow of hot air in the inner container of the electric oven is ensured, generation of hot wind vortex at the wind outlets is avoided, wind outlet local high temperature is eliminated, and the uniformity of electric oven inner container baking temperature is improved.

The present invention provides a message forwarding method and a message forwarding device which are applied to network equipment. The method includes the following steps that: after a client device sends a DNS request message to a DNS server, a DNS response message sent to the client device by the DNS server is received; an analyzed domain name is analyzed out from the DNS response message, whether the analyzed domain name is matched with preset domain name characteristics is judged; if the analyzed domain name is matched with the preset domain name characteristics, an A record address corresponding to the analyzed domain name is analyzed out from the DNS response message; the corresponding relation of the next-hop address of a link pre-configured for the analyzed domain name and the A record address is updated to a routing table; and when a service message sent by the client device is received, the routing table is queried, so that the service message can be forwarded. With the message forwarding method and the message forwarding device provided by the embodiments of the invention adopted, a pre-configured link is adopted to carry specific domain name access, so that the smoothness and reliability of domain name access of specific network services can be ensured under a situation that bandwidth is in shortage and services are increased sharply, and thus, the data transmission quality of the network services can be guaranteed, and user experience can be improved.

The invention discloses a radio frequency plasma-catalyst synergic effect reaction device, which comprises components such as a non-balance plasma reaction chamber, a hollow tubular metal spiral coil with a cooling passage, a catalysis body with a catalyst, an air inlet sealing end part and air inlet end sealing flange, an exhaust sealing end part and exhaust end sealing flange, an electromagnetic shielding cover and the like. The radio frequency plasma-catalyst synergic effect reaction device belongs to a reaction device arranged by aiming at the inductance coupling radio-frequency plasma and catalyst synergic effect; the non-balance plasma reaction chamber made of quartz is used as a gas reaction passage; the metal spiral coil is used, so that corresponding other plasma generating imbalance can complete a chemical reaction through the synergic effect driving with the catalyst in the passage, so that the subsequent ingredient analysis of gas after a reaction is convenient; further, the application in aspects of the chemical engineering synthesis, greenhouse effect gas recovery utilization and renewable energy sources effective storage is realized; the advantages of high reaction selectivity, high energy utilization efficiency and the like are realized.

The invention relates to a mutually-embedded reinforced ecological retaining wall construction method. The mutually-embedded reinforced ecological retaining wall construction method comprises the steps of firstly removing the damaged original bank and foundation, thereafter simultaneously constructing foundation piles, digging away part of wall, filling soil, then simultaneously performing reinforced concrete foundation construction and net arrangement at the front of the wall, embedding anchor heads into the reinforced concrete foundation, performing mutually-embedded masonry construction on the reinforced concrete foundation to form a retaining wall cone, threading out diagonal tie bars from reserved holes in mutually-embedded masonries when each masonry is placed, immediately performing construction of a concrete cap after the mutually-embedded masonries reach design height, simultaneously arranging anchor heads in the concrete cap, finally anchoring the diagonal tie bars in the concrete cap to complete the vertical anchoring work of the retaining wall, simultaneously performing drainage layer and cement jet grouting pile construction, forming expand heads according to predetermined depth, performing horizontal drilling in the mutually-embedded masonry retaining wall to form anchor rod holes until the drilling depth reaches the positions of the expand heads, then inserting anchor rods in the drilled holes, and performing anchoring by grounding to complete horizontal anchor rod construction.

The invention discloses a dust-removal stirring device for preparing a stabilizer. The dust-removal stirring device comprises a base, wherein fixed plates are arranged at two ends of the base; supporting blocks are arranged at the inner sides of the fixed plates; a tank body is arranged between the supporting blocks; the tank body is cylindrical, and a feeding pipe and a discharging pipe are arranged at the top and bottom of the tank body respectively; a stirring assembly is arranged in the tank body; fitted material scraping devices are arranged on inner walls of the tank body; each materialscraping device is of an annular structure; each fixed plate is provided with a reciprocating driving assembly for driving the corresponding material scraping device to do up-down reciprocating sliding along the inner wall of the tank body; annular seats are arranged at the top end in the tank body; each annular seat is of a hollow structure and a plurality of air holes II are uniformly distributed on a bottom surface of each annular seat; the upper end of each annular seat is communicated with a connection pipe II; an air pump III is arranged at the top of each fixed plate; an air outlet of each air pump III is communicated with the corresponding connection pipe II through a hose. According to the stirring device disclosed by the invention, the material scraping devices are used for continuously moving raw materials getting close to the inner walls of the tank body, so that the mixing and reaction efficiency of the raw materials is improved, the attachment of the raw materials on theinner walls of the tank body is reduced and the trouble of cleaning the inner walls of the tank body is reduced.

The invention discloses an automatic squeezer for a drainage tube. The automatic squeezer comprises an infrared speed measurement clamp, an air pump and a controller. An air bag cushion is arranged on the inner side of the infrared speed measurement clamp. The air pump communicates with the air bag cushion through a pipeline. An inflation valve is arranged on the pipeline. An air releasing valve is arranged on the air bag cushion. The infrared speed measurement clamp, the air pump, the inflation valve and the air releasing valve are connected with the controller through signal lines. According to the automatic squeezer of the structure for the drainage tube, the drainage tube is squeezed periodically, so that blocking of the drainage pipe is avoided, and accordingly drainage unobstruction is guaranteed.

The invention relates to the technical field of sewage treatment equipment, and discloses a high-efficiency wet black magnetic powder sewage treatment equipment, including a transition pool, a filter chamber is provided on the top of the transition pool, and a motor compartment is provided on one side of the filter chamber A water pump is fixedly installed on the top of the motor compartment, and a water inlet pipe is fixedly set on the water pump, and one end of the water inlet pipe extends to the inner cavity of the filter chamber, and a first drive is fixedly installed on one side of the inner cavity of the filter chamber. In the motor, the output shaft of the first driving motor is fixedly sleeved with one end of the rotating shaft through the fixed sleeve. The high-efficiency wet black magnetic powder sewage treatment equipment, through the function of the fixed shaft sleeve, is convenient to drive the filter to rotate, and then separate the blockage on the filter from the filter, and use the garbage recovery device to pick it up to ensure the smoothness of the filter It avoids the blockage of sundries, the blockage of sewage flow, and the difficulty of cleaning process, which improves the convenience of decontamination.

The invention relates to a device for secondary separation of impurities from water in a water drainage system of a vegetable basin, and belongs to the technical field of living supplies. The device comprises a main flowing pipe and an auxiliary flowing pipe, wherein an upper connector is mounted at the upper end of the main flowing pipe, and a lower connector is mounted at the lower end of the main flowing pipe; the auxiliary flowing pipe is mounted on the right side of the main flowing pipe; a funnel is arranged at a joint of the main flowing pipe and the upper connector; a floating ball isplaced on the funnel; an aggregation connection pipe is mounted at the lower end of the auxiliary flowing pipe; an aggregation bottle is mounted at the lower end of the aggregation connection pipe; ahose is also arranged between the aggregation bottle and the main flowing pipe. According to the device disclosed by the invention, under the inclination action of a first filter net, the impurities can flow into the aggregation bottle, so that blockage of a sewer caused by a fact that the impurities enter the sewer for a long time is prevented, and the un-blockage of the water drainage system isfully guaranteed. The device also achieves an effect of preventing odor under the cooperation action of the floating ball and the funnel. The device also can separate sewage from the impurities in theaggregation bottle and automatically drain away the sewage in the aggregation bottle.

The invention discloses a triple purification type motorcycle air cleaner. The inner part of a shell is divided into a front cavity and a rear cavity through a partition, and a separating cylinder (5) is arranged in the front cavity of the shell. An air inlet is formed in the front wall at the upper end of the separating cylinder (5) and communicated with the rear end of an air inlet pipe (3). An air guide cylinder (7) is arranged in the separating cylinder (5), and a spiral-flow type exhaust fan (8) is mounted at the inner top of the air guide cylinder (7). The rear cavity of the shell is divided into an upper expansion chamber (A) and a lower air outlet chamber (B) through a filter element (9), and the front end at the upper part of the expansion chamber (A) is communicated with an air outlet (7a) formed in the rear wall of the upper end of the air guide cylinder (7) through a drainage channel (10). The triple purification type motorcycle air cleaner can effectively remove dust and particles in air through three times of purification including adsorption, cyclone separation and filtration, can ensure smoothness of air inflow, has the characteristics of being skillful in design, simple in structure and low in cost, and is suitable for various motorcycles.

The utility model discloses an oil-bath type dust removal structure of a motorcycle air cleaner. An upper end cover (1) and a lower end cover (2) are interlocked to form a shell of the air cleaner, and a front cavity and a rear cavity are formed in the shell. A separating cylinder (5) is arranged in the front cavity of the shell, and a liquid storage chamber (6) used for storing engine oil is formed in the bottom of the front cavity of the shell. The separating cylinder (5) is in a cone shape with the large top and the small bottom, and an air inlet is formed in the front wall at the upper end of the separating cylinder (5). An air guide cylinder (7) is arranged in the separating cylinder (5), and a spiral-flow type exhaust fan (8) is mounted at the inner top of the air guide cylinder (7). An air outlet (7a) communicated with the rear cavity of the shell is formed in the rear wall at the upper end of the air guide cylinder (7). The oil-bath type dust removal structure can effectively remove dust and particles in air through three times of purification including adsorption, cyclone separation and filtration, so that the air flowing to an engine is clean, the service life of the engine is greatly prolonged, and the smoothness of air inflow can be ensured.

The invention provides a server switching method and device and a storage medium, relates to the technical field of computers, in particular to the cloud technology, and is used for guaranteeing the smoothness of a target application in the running process. In the running process of the target application, the client obtains current first network state information of the first proxy server; the client determines network reference information and obtains a fluctuation value between the first network state information and the network reference information; if the fluctuation value exceeds the preset range, the client selects a second proxy server from the candidate proxy servers based on the current second network state information of the candidate proxy servers; and the client switches the data transmission link corresponding to the target application from the first proxy server to the second proxy server. And the client side measures the network state information in the operation process, and reselects the second proxy server to access after determining that the first proxy server needs to be switched according to the network state information so as to guarantee the operation smoothness of the target application.

The invention discloses a power ventilating system used for an elevator. The power ventilating system comprises an elevator shaft, a gravity switch, an air outlet plate, car doors, a car, a car ventilating device, a shaft ventilating device, an auxiliary clearing device, an air inlet tube and touch switches, wherein the shaft ventilating device is arranged outside the top and the bottom of the elevator shaft, and the auxiliary clearing device is arranged inside the elevator shaft; the car is arranged in the elevator shaft; one side of the car is provided with the car doors; the opposite sidesof the car doors are provided with the touch switches; the touch switches are electrically connected to the car ventilating device; the gravity switch and the car ventilating device are arranged outside the top of the car, and the air outlet plate is arranged inside the top of the car; the car ventilating device communicates with the air outlet plate through the air feeding tube; and the gravity switch is electrically connected to the shaft ventilating device. The power ventilating system has the advantages of being energy-saving and environmentally friendly, reducing use energy consumption ofelectric energy, being capable of timely replacing air inside the car, and being further provided with a clearing function.

The invention discloses a wind pipe device used for an air conditioning system of a boarding bridge. The boarding bridge comprises a plurality of passages including a fixed passage connected with a building, an inner passage and an outer passage used for connecting a ship body, wherein one end of the inner passage is connected to the other end of the fixed passage and is telescopically sleeved in the outer passage; each passage comprises a top plate, side plates connected to two sides of the top plate, and a bottom plate opposite to the top plate; and the wind pipe device is arranged on the top plate of the inner passage and comprises at least one row of wind pipe groups arranged along the length direction of the passage, and the wind pipe groups are provided with a plurality of air outlets opened towards the inside of the passage. The invention also discloses the air conditioning system provided with the wind pipe device, and the boarding bridge provided with the air conditioning system. According to the invention, the air-conditioning air supply inside the passages is more uniform, and the space for use in the passages of the boarding bridge is increased at the same time.