1226results about How to "Increase flow rate" patented technology

The invention provides positive electrode slurry and a preparation method and application thereof, and relates to the technical field of batteries, the preparation method comprises the following steps: carrying out size grading on positive electrode active material particles for preparing slurry mixing in advance, preferentially and uniformly dispersing a fine-particle active material and strip-shaped conductive agent particles, and uniformly dispersing the fine-particle active material and the strip-shaped conductive agent particles; namely, under the condition that the binder is fully dissolved, the fine-particle positive electrode active material is preferentially adhered to the fibrous and tubular conductive agents, and the fibrous and tubular conductive agents and the positive electrode active material particles form a conductive network better under the condition of not changing the original substances and the proportion thereof, so that the agglomeration of the strip-shaped conductive agent is avoided; the conductivity of the positive plate is improved.

The invention discloses a flow field device for purifying a printing cavity and a 3D printer, the flow field device comprises a forming cavity, an air inlet piece and an air outlet piece, the air inlet piece and the air outlet piece are arranged in the forming cavity in a communicating mode, the air inlet piece and the air outlet piece are arranged away from each other, and the air inlet piece comprises an air inlet pipe and a lower air equalizing pipe connected to the air inlet pipe; the lower gas homogenizing pipe is arranged in the forming cavity in a communicating mode, the communicating position is located on the lower portion of the forming cavity, the outline of the edge of the end, away from the air inlet pipe, of the lower gas homogenizing pipe is rectangular, the long edge of the lower gas homogenizing pipe is parallel to the bottom wall of the forming cavity, a plurality of gas homogenizing plates are arranged in the lower gas homogenizing pipe, and a plurality of gas homogenizing holes are formed in the gas homogenizing plates. The gas flow field can be formed near the laser scanning area, so that black smoke generated during laser scanning can be comprehensively and effectively taken away, and the influence of the black smoke on the printing quality in the printing process can be reduced.

The invention relates to the technical field of heat recovery equipment, and discloses an energy-saving type waste heat recovery RTO waste gas treatment device in order to solve the problem that part of purified gas still has high heat due to the fact that cooling water does not make full contact with a heat exchange pipe. Through the arrangement of the upper baffle plate, the sliding plate and the barrel body, along with the gradual rising of the liquid level of cooling water, the sliding plate moves upwards, so that a space is formed between the upper side of the upper baffle plate and the inner wall of the barrel body, and due to the fact that the barrel body is obliquely arranged, the gradually rising liquid level of the cooling water extrudes out air in the barrel body; the contact area between the cooling water and the heat exchange tube is increased, so that more heat in the purified gas is absorbed by the cooling water, and the probability of heat waste is reduced.

The invention provides an anti-expansion new energy battery which comprises a battery box, air draft assemblies, a liquid cooling assembly, an air supply assembly, air cooling assemblies and a battery cell, the two air draft assemblies are installed on the left surface of the battery box, the air cooling assemblies are installed at the bottom and the upper portion of the battery box, and the battery cell is installed in the battery box. Compared with the prior art, the invention has the following beneficial effects: the air cooling assembly is matched with the liquid cooling assembly, two sets of cooling structures with different cooling modes are provided, and the battery core can be rapidly cooled, so that the battery core can work in a reasonable temperature range during charging and discharging, the battery core is prevented from expanding due to high temperature, the service life of the battery core is greatly prolonged, and the service life of the battery core is prolonged. The air draft assembly can suck away heat generated by the battery cells in the battery box through the air cooling assembly in a manner of accelerating air flow, so that not only can the air flow speed in the battery box be accelerated, but also hot air in the battery box can be rapidly guided away, and the purpose of rapid cooling is achieved.

The invention provides a cylindrical hydrodynamic ventilation structure special for a cooling tower fan, and belongs to the technical field of cooling ventilation. Comprising a tower body, a water basin is installed at the bottom of the tower body, a water inlet pipe is installed at one end of the water basin, a water return pipe is installed at the top of the water inlet pipe, a water pump is arranged at one end of the water inlet pipe, and a water outlet pipe is installed at one end of the water basin. By arranging the worm gear speed increasing assembly and the power driving assembly, kinetic energy of water flow is converted into mechanical energy through circulation of water power, the cooling process is accelerated, complex parts such as a motor and a transmission device in a traditional cooling tower are reduced, the manufacturing cost is reduced, maintenance points and the fault rate are reduced, and the service life of the cooling tower is prolonged. The reliability and stability of the system are improved, the rotation angle adjustment of the fan blades is increased, the air volume is increased, evaporation and heat dissipation of water are accelerated, energy consumption is reduced, the flexibility of the system is enhanced, and the ventilation structure can adapt to different working environments and cooling requirements.

The present invention provides a precise proportioning fermentation device for tricholoma matsutake beverage production, and relates to the technical field of beverage proportioning fermentation, the precise proportioning fermentation device comprises a mixed fermentation mechanism, the mixed fermentation mechanism can be used for preparing a beverage and storing the prepared beverage, the mixed fermentation mechanism is arranged at the top of the mixed fermentation mechanism, and the conveying mechanism is arranged at the bottom of the mixed fermentation mechanism. Raw materials are injected into the mixed fermentation mechanism from the conveying mechanism, the proportioning mechanism is arranged above the conveying mechanism, and the proportioning mechanism extends into the conveying mechanism and is matched with the conveying mechanism to control the injection amount of the raw materials. During use, the internal volume of the metering cylinder is changed through the volume piston in advance, then raw materials are fully injected into the metering cylinder through the feeding pipe, then the bottom of the metering cylinder is driven to exceed the bottom of the proportioning pipe for discharging, and the feeding pipe is sealed through the outer surface of the metering cylinder to avoid leakage; meanwhile, the flow speed of the raw materials in the metering cylinder is increased through extrusion of the volume piston, and the effect of improving the fermentation matching accuracy is achieved.

The invention discloses a pulse blowing and cleaning device for a spinneret plate. The blowing and cleaning device comprises a first bearing seat, an air supply assembly, a first blowing assembly, a second blowing assembly and an elastic part, wherein the first bearing seat can generate linear displacement; at least part of the air supply assembly is arranged on the first bearing seat; according to the device, through organic combination of all the components, pulse type blowing of the spinneret plate is achieved, the blowing angle of blowing airflow can be changed, and the blowing effect is improved; the operation is simple, the second bearing seat and the third bearing seat are in butt joint and fit through external force, then the air source is started to realize automatic purging and cleaning, the purging efficiency is high, the purging effect is good, the blown impurities cannot be dissipated everywhere, the utilization rate of the air source is high, the purging height can be adjusted, and the practicability is high. The device is suitable for blowing and cleaning spinneret plates of different specifications.

The utility model relates to the field of water conservancy and hydropower engineering, in particular to a novel combined energy dissipater. The novel combined energy dissipater comprises a combined step located on a drainage section, the combined step is formed by connecting a W-shaped step and a V-shaped step in the direction perpendicular to water flow, a trapezoidal energy dissipation pier is arranged on the horizontal plane of each step of the combined step, and the vertical face of each step of the combined step is folded inwards to form a concave angle. The bottom of the combined step is connected with the water inlet end of the stilling pool, at least one row of opposite impact type stilling piers are arranged in the stilling pool in the transverse direction, and a plurality of wedge-shaped tail piers are arranged at the tail of the stilling pool and combined with the tail sill. According to the novel combined energy dissipater, a more comprehensive energy dissipation facility is provided, single energy dissipation is converted into multi-element energy dissipation, the better energy dissipation effect is achieved, meanwhile, the work amount is reduced, and the combined energy dissipater is more convenient and simpler.

The invention relates to a porous carbon felt structure which comprises a carbon felt plate, a plurality of porous channels are formed in the carbon felt plate, and the axes of the porous channels are perpendicular to the flow direction of electrolyte on the carbon felt plate and parallel to the thickness direction of the carbon felt plate; a long-strip-shaped flow channel parallel to the flow direction of electrolyte is arranged on a traditional carbon felt plate, the proportion of a low-flow-speed area is 78.01%, according to the pore channel carbon felt structure, the pore channels perpendicular to the flow direction of the electrolyte are arranged on the carbon felt plate to serve as the flow channels, the proportion of the low-flow-speed area is reduced to 6.12%, the pressure loss of the electrolyte flowing on the carbon felt plate is effectively reduced, and the service life of the carbon felt plate is prolonged. The flow velocity of the electrolyte on the carbon felt plate is improved, and the uniformity of flow velocity distribution is also remarkably improved.

The invention discloses a modified polylactic acid material applied to high-speed 3D printing and a preparation method of the modified polylactic acid material. The modified polylactic acid material comprises the following components in parts by weight: 50-80 parts of a polylactic acid material, 10-30 parts of inorganic powder, 1-10 parts of a toughening agent, 0.1-0.5 part of a coupling agent, 0.1-0.4 part of a hindered phenol antioxidant, 0.1-0.4 part of a phosphite antioxidant and 0.2-0.6 part of a plasticizer. The invention has the following beneficial effects: PLA with different flowability is compounded as a base material and is blended with inorganic powder, so that the printing speed of the material reaches 500mm / s, and excellent printability of high precision, no wiredrawing and layer grain covering is achieved; the coupling agent is introduced into a system of the PLA and the inorganic powder, so that the surface polarity of the inorganic powder is improved, the inorganic powder has good compatibility with a resin matrix, and the interlayer adhesive force and the mechanical property of the material are further improved.

The invention provides an adjustable water-saving valve for a multi-stage pipeline and a using method of the adjustable water-saving valve, and belongs to the technical field of valves.The adjustable water-saving valve comprises a shell formed by buckling a front cover and a rear cover front and back, the shell comprises a flow channel penetrating front and back in the length direction, and the adjustable water-saving valve further comprises T-shaped limiting grooves formed in the upper side and the lower side of the flow channel in the shell; a valve element is arranged in the shell flow channel and is in an I shape. According to the scheme, the valve element, the limiting pipe, the first water outlet pipe, the sleeve and the second water outlet pipe are arranged, the opening degree of the valve element and the rotating angle of the first water outlet pipe are in positive correlation, and in the small-flow state, water outlet is achieved only through the second water outlet pipe; the water flow generated under the dispersion action of the filter screen has a good washing effect, and a good cleaning effect can be achieved in actual use, so that the water consumption for washing is saved, and the water-saving effect is achieved.

The invention provides a shield contaminated soil treatment device and a using method thereof, the shield contaminated soil treatment device comprises a stirring shell, a driving shaft and a grinding part arranged on the driving shaft in a linkage and sleeving mode, the grinding part divides the interior of the stirring shell into a grinding cavity and a stirring cavity which are distributed up and down, and a plurality of liquid pumping holes corresponding to the grinding cavity are formed in the side wall of the driving shaft in a penetrating mode; the stirring assembly is arranged in the stirring cavity, the stirring assembly comprises a stirring part which is in linkage with the driving shaft in a sleeving mode and a linkage assembly which is connected with the grinding part and the stirring part, the stirring part and the driving shaft are sequentially communicated to form a liquid pumping channel which is connected with the stirring cavity and the liquid pumping hole, and a first-stage one-way valve part is arranged in the stirring part in a spaced mode; a second-stage one-way valve located below the liquid pumping hole is arranged in the driving shaft in a spaced mode, and the first-stage one-way valve and the second-stage one-way valve divide the liquid pumping channel into a first liquid pumping area, a second liquid pumping area and a third liquid pumping area from bottom to top. The solid medicine dissolving sufficiency can be improved, and the medicine effect is prevented from being affected by wrong medicine proportioning.

According to the five-axis rotary table driven by the liquid cooling permanent magnet synchronous motor, a liquid cooling channel is formed between the inner side of the five-axis rotary table and the outer side of the permanent magnet synchronous motor, circulation is formed through the liquid cooling channel and an external heat exchanger through a pipeline, and one end of the liquid cooling channel takes away heat generated by the motor; the other end of the liquid cooling channel circulates the cooling liquid cooled by the heat exchanger to the outer side of the permanent magnet synchronous motor for continuous cooling, so that heat dissipation of the motor is facilitated; the liquid cooling channel is of a multi-layer parallel structure, the flow is large, the flow speed is high, liquid can be rapidly fed and discharged, and uniform and efficient heat dissipation is achieved; a temperature sensor is arranged in the enameled wire coil and used for transmitting temperature data in the coil to a machine tool control system and detecting the real-time temperature of the motor, and meanwhile the heat exchanger adjusts the temperature of input liquid according to the monitored temperature.

The invention discloses a chemical barrel cleaning device for chemical production, and relates to the technical field of chemical equipment cleaning, the chemical barrel cleaning device comprises a base, a placing plate is fixedly mounted at the top of the base, a barrel body is arranged at the top of the placing plate, and the chemical barrel cleaning device further comprises a cleaning assembly arranged on one side of the top of the placing plate and comprising a vertical plate and a driving assembly; the vertical plates are symmetrically arranged on the other side of the top of the placing plate, the drying assemblies are arranged on the side, away from the vertical plates, of the top of the placing plate, the vertical plates are fixedly installed on one side of the top of the placing plate, electric push rods are fixedly installed on one sides of the vertical plates, connecting frames are fixedly installed at the movable ends of the electric push rods, and guide rods are symmetrically installed on one sides of the connecting frames; according to the chemical barrel cleaning device, when a chemical barrel is cleaned, the interior and the exterior of the chemical barrel can be synchronously cleaned, cleaning dead corners are avoided in the cleaning process, the chemical barrel can be limited, the chemical barrel is prevented from moving, and the cleaning quality of the chemical barrel is improved.

The invention relates to the field of electrochemical energy storage, and discloses a vanadium redox flow battery stack optimization and performance prediction method, which comprises the following steps: constructing a high-precision reaction kinetic model, and accurately describing the kinetic behavior of an electrode reaction based on a multi-step reaction mechanism, a surface adsorption-desorption process and heterogeneous surface reaction distribution; based on the output of the reaction kinetic model, constructing a multi-physical field coupling model, including ion mass transfer, fluid dynamics and heat transfer models, to cooperatively simulate the ion concentration, fluid flow and temperature field distribution in the galvanic pile; and based on the state variables of the multi-physics field coupling model, constructing a dynamic prediction model of chemical reaction-heat-fluid coupling, and predicting the future performance of the galvanic pile in real time through a long and short term memory network model. According to the method, the energy efficiency, the power density and the service life of the vanadium redox flow battery can be improved, and support is provided for intelligent management and optimization of the vanadium redox flow battery.

The invention discloses an exhaust ball valve with an internal self-cleaning function, and relates to the technical field of exhaust ball valves, the exhaust ball valve comprises an exhaust ball valve main body, the exhaust valve main body comprises a connecting pipe and an exhaust pipe, the exhaust pipe is mounted above the connecting pipe, a partition plate is mounted in the exhaust pipe, a space below the partition plate is a primary filtering space, and a secondary filtering space below the partition plate is a secondary filtering space. The space above the partition plate is a secondary filtering space, mounting plates are mounted at the joint of the connecting pipe and the exhaust pipe, a power-assisted cleaning assembly is mounted between the mounting plates, a blocking assembly is arranged on the partition plate, an end cover is mounted above the exhaust pipe, and an exhaust assembly and a pressure gauge are mounted on the end cover. The end cover is connected with the blocking assembly, the power-assisted cleaning assembly can clean the first-stage filtering space, the blocking assembly can block air entering the second-stage filtering space, and therefore when the device is used, the inner wall of the exhaust ball valve can be automatically cleaned, and residual dust on the inner wall can be cleaned.

The utility model provides a range hood and a kitchen system including the same, the range hood comprises a smoke collecting hood, the air inlet surface of the smoke collecting hood facing a stove is provided with a main air inlet area and at least one auxiliary air inlet area, the suction force of the main air inlet area is greater than that of each auxiliary air inlet area, and the suction force of each auxiliary air inlet area is greater than that of the main air inlet area. The at least one auxiliary air inlet area is located at one end of the main air inlet area, the range hood further comprises a partition part, the partition part is located in the exhaust fume collecting hood and covers the main air inlet area so as to separate the main air inlet area from the auxiliary air inlet areas, and an outlet is formed in at least one surface, away from the auxiliary air inlet area, of the partition part. The suction force of the main air inlet area is larger than that of each auxiliary air inlet area, so that the air inlet amount of the main air inlet area is larger than that of the auxiliary air inlet areas. By adopting the structural form, the airflow of the auxiliary air inlet area is not influenced by the airflow of the main air inlet area, so that the problem that the instantaneous resistance at the inlet of the auxiliary air inlet area is instantaneously increased is solved, and the lampblack can be prevented from escaping.

The invention relates to the technical field of mold pouring, in particular to a mold pouring device for casting production, which comprises a base, a guide groove for improving stability is formed in the upper surface of the base, a reciprocating screw rod is arranged in the guide groove, and a bearing for moving is movably connected to the outer side of the reciprocating screw rod. A motor used for driving is fixedly connected to one end of the base, a first mold plate used for shaping is connected to the upper end of a bearing, and when the first mold plate and a second mold plate are combined, a gear is rotated through a rack to open a valve in a one-way valve for exhausting; and meanwhile, in the moving process of the first mold plate, a connecting rod is extruded through a connecting block, so that a valve in a connecting pipe is opened, heat in the mold is rapidly discharged after pouring, meanwhile, the mold cooling speed is increased, the manufacturing efficiency is improved, and the mold pouring device for casting production is achieved.

The invention relates to an efficient heat exchanger for petrochemical engineering, and relates to the technical field of heat exchangers. The device comprises a heat exchange shell, a corrosion inhibition box fixed to the heat exchange shell, a plurality of heat exchange pipes and two baffle plates which are rotationally arranged on the heat exchange shell, a processing mechanism for conducting scraping, brushing, fracture detection and marking on the heat exchange pipes correspondingly, and a rotating assembly for conducting rotating driving on the heat exchange pipes. The translation assembly is used for carrying out translation driving on the two baffle plates; the test assembly is used for carrying out deformation detection on the inner wall of the heat exchange shell; the corrosion inhibition box is used for storing a corrosion inhibitor, and a control assembly used for controlling the release amount of the corrosion inhibitor is arranged on the heat exchange shell. The purpose of heat exchange between the petroleum raw material and the heat medium can be achieved, the petroleum raw material can be guided to be evenly distributed in the tube pass, the phenomenon that the petroleum raw material forms laminar flow or uneven flow in the tube pass is avoided, heat stress caused by uneven heating of the heat exchange tube is prevented, and deformation and cracking of the heat exchange tube due to the heat stress are prevented.

The invention discloses an explosion-proof motor for an underground coal mine, and relates to the technical field of explosion-proof motors, and the explosion-proof motor comprises a housing, the outer wall of the housing is fixedly connected with a plurality of short fins at equal intervals, the inner wall of the housing is fixedly connected with a stator around the circumference, and the inner wall of the center of the housing is rotatably connected with a rotating shaft. Through vertical separation of the flow guide plate and flow guide of concave arc faces on the two sides, the resistance of hot air shunting to the two sides can be reduced, after the hot air enters the ventilation cavity, the heat dissipation area is increased under the flat arrangement of the hot air, and heat on the surface of the ventilation cavity is rapidly guided out through cooperation of the unfolded first fins, the unfolded second fins and the unfolded third fins, so that the heat dissipation efficiency is improved. The temperature exchange rate can be increased through double heat conduction, hot air in the ventilation cavity can be rapidly cooled, airflow and temperature on the two sides can be balanced, the stability of the system is improved, the equipment temperature can be reduced through good heat dissipation, and electric sparks caused by overheating are reduced.

The invention is suitable for the technical field of water pumps, and provides a stable heat dissipation energy-saving water pump which comprises a pump body, a water inlet pipe, a water outlet pipe, a pump cover, a water pump motor, a main shaft and a suction structure and further comprises an auxiliary heat dissipation structure, the auxiliary heat dissipation structure comprises a connecting assembly, a discharge and suction assembly and an adjusting assembly, and the connecting assembly comprises a connecting pipe A, a mounting cylinder and a longitudinal pipe. According to the energy-saving water pump capable of stably dissipating heat, the water pump normally carries out water pumping and draining operation and drives the auxiliary heat dissipation structure through water flow of the water pump, so that the flow direction and the flow speed of air around the heat dissipation fins can be changed through flowing of a water source, and the heat exchange efficiency and the heat exchange quality of the heat dissipation fins and external gas are improved; no extra driving source needs to be added, dependence on external energy is reduced, and therefore stable heat dissipation, energy conservation and efficiency improvement of the water pump are achieved, and the device is suitable for water pumps of various types and specifications and has high universality and flexibility.

The invention relates to the technical field of axial motor heat dissipation, in particular to an axial motor air cooling system which comprises a front plate and a rear plate, a rotor assembly and a stator assembly are installed between the front plate and the rear plate, and a ventilation shaft is fixedly installed in the middle of the interior of the rotor assembly in a penetrating mode. And the rear end of the ventilation shaft rotationally penetrates through the heat dissipation back plate and then is fixedly connected with a rotating shaft piece, a heat dissipation frame is fixedly installed in the middle of the heat dissipation front plate, a pressure fan is rotationally installed in the heat dissipation frame, and a speed increasing mechanism is arranged between the pressure fan and the ventilation shaft. According to the motor, on one hand, the fan can be further driven to rotate at a high speed by driving the double-shaft speed increaser while the motor operates, so that an additional high-speed fan does not need to be installed for heat dissipation, and on the other hand, airflow entering the motor can penetrate through the multiple gaps and the air channels between the rotor assembly and the stator assembly; therefore, the internal parts of the motor can be fully cooled.

The utility model relates to the technical field of food processing, in particular to full-automatic circulating type fine dried noodle drying equipment which comprises a machine body, rotating shafts are symmetrically, vertically and rotationally installed in the machine body, chain wheels are fixedly connected to the rotating shafts in a sleeved mode, a chain is wound on the two chain wheels in an engaged mode, and the chain is connected with the inner top wall of the machine body through a sliding component in a sliding mode. A plurality of mounting rods are mounted on the lower surface of the chain, U-shaped placing blocks for placing fine dried noodles are fixedly mounted at the bottom ends of the mounting rods, a mounting seat is fixedly mounted on the upper surface of the machine body, a driving motor is fixedly mounted on the upper surface of the mounting seat, and an output shaft of the driving motor is fixedly connected with one rotating shaft. Through cooperation of the two chain wheels, the chain and the driving motor, the fine dried noodles are not still in the drying process in the machine body any more, the flow speed between the surfaces of the fine dried noodles and hot air in the machine body can be increased, and therefore the drying efficiency of the fine dried noodles is improved.

The invention relates to the technical field of heat exchangers, and particularly discloses an energy-saving plate-fin heat exchanger which comprises a box body, a first fin plate group, a second fin plate group, a partition plate and a mounting table, a first edge sealing plate and a second edge sealing plate are arranged on the partition plate, a first driving mechanism is arranged on the first edge sealing plate, a second driving mechanism is arranged on the second edge sealing plate, and the mounting table is arranged on the box body. A waste heat utilization mechanism is arranged in the mounting table; the first driving mechanism can adjust the length of the heated channel, and the second driving mechanism can adjust the length of the heating channel, so that the flow velocity of the heated liquid and the heating liquid is increased, the turbulence degree of the heated liquid can be enhanced by increasing the flow velocity, a thermal boundary layer is destroyed, the heat transfer coefficient is increased, and the heating efficiency is improved. Therefore, the heating effect on the heated liquid is improved, the liquid outlet temperature of the heated liquid can be controlled more accurately, the waste heat utilization mechanism can further utilize waste heat carried by the heating liquid output from the box body, and the energy utilization rate is increased.

The invention relates to the technical field of chemical or physical analysis, in particular to an ERT technology-based system and method for intelligently monitoring silt blockage of a filling pipeline, and the system comprises an ERT monitoring module, a fluid mechanics optimization module, a blockage risk early warning module, an intelligent scheduling and adjusting module and a self-cleaning and repairing module. According to the method, the conductivity change of fluid in the pipeline is monitored in real time, fluid distribution is accurately mastered, parameters such as flow velocity, pressure and temperature are optimized, the flowing stability of the pipeline is ensured, blockage and deposition are avoided, flowing parameters are dynamically adjusted, flowing abnormity can be rapidly recognized and corrected, the efficiency of the filling process is improved, and meanwhile the self-cleaning function is combined. Sediments are removed through the micro-vibration technology, the maintenance cost and frequency are reduced, the service life of a pipeline is prolonged, the automation and intelligence level of the filling process is improved through the overall scheme, and mine safety and operation stability are improved.

The invention provides a pulse assembly, a suction valve, an endoscope and an implantation system, and relates to the field of medical instruments.The pulse assembly comprises a communication part provided with a channel, the channel is provided with an inlet, a first outlet and a second outlet, and the inlet is used for being communicated with an instrument tube and / or a sheath tube; the shielding piece is movably arranged on the communicating part, and the shielding piece can intermittently block the first outlet under the movable condition; and the driving part is used for driving the shielding part to move, so that the first outlet is intermittently blocked. Compared with the prior art, the device has the advantages that pulse control over the flow speed of washing liquid is achieved, the stone removing efficiency in the operation process is remarkably improved, meanwhile, different operation requirements can be flexibly met, the operation time is effectively shortened finally, and discomfort and risks of a patient are reduced.

The invention discloses a radial-flow type three-dimensional electrode electrolysis reactor for underground water treatment and a construction method of the radial-flow type three-dimensional electrode electrolysis reactor. The reactor comprises a reaction bin and a sewage pipe located in the center of the interior of the reaction bin, a plurality of radial flow electrode plates radiating outwards are arranged on the outer portion of the sewage pipe in the circumferential direction at equal intervals in a surrounding mode, a plurality of water outlet holes are formed in the positions, corresponding to the radial flow electrode plates, of the outer wall of the lower portion of the sewage pipe, and the interior of the reaction bin is filled with activated carbon carrier electrode particles loaded with Cu-Ce. The method comprises the steps of S1, sewage injection, S2, particle electrode injection and S3, circular treatment. The three-dimensional electrode is constructed, so that a micro electric field is formed between the cathode and the anode, the mass transfer distance between free radicals and organic matters is greatly shortened, and meanwhile, attachment sites are provided for catalytic active components, so that the active components participate in dissociation of the free radicals and oxidation-reduction reaction of the organic matters; and the reaction rate of the electro-catalysis reaction and the treatment efficiency of the electro-catalysis process are greatly improved.

The invention relates to a quaternary ammonium salt modified strong anion monolithic column, and discloses a monolithic column material, and quaternary ammonium salt groups are grafted on the internal surfaces of pores and channels in the monolithic column material. The quaternary ammonium salt group exists in the form of EP-OCH2CH (OH) CH-N + R1R2R3. The monolithic column prepared by the invention is rich in hydroxyl groups, has excellent compatibility to an elution object containing biomacromolecules, has excellent specific adsorption capacity for nucleic acid substances, and is suitable for enrichment and separation of DNA and / or RNA substances.

The invention discloses a high-thermal-conductivity and high-uniform-temperature microchannel structure and a processing method thereof.A microchannel heat sink and an acrylic cover plate above the microchannel heat sink are arranged, a contraction flow channel is embedded in the acrylic cover plate, the height of the contraction flow channel is gradually decreased from the inlet end to the outlet end, and the main body material of the microchannel heat sink is a diamond / copper composite material; due to high thermal conductivity, the diamond / copper-based micro-channel can greatly reduce the temperature of the chip in the working process, and the contraction type micro-channel can improve the flow velocity of the outlet side, enhance the heat exchange effect, reduce the temperature difference between the inlet and the outlet and enhance the temperature uniformity. The magnetron sputtering polytetrafluoroethylene can make the acrylic flow channel hydrophobic and reduce the flow resistance, so that the design of the micro-channel integrates high heat dissipation, high temperature uniformity and low flow resistance, and the overall heat exchange performance of the existing micro-channel is improved.