226results about How to "Guaranteed permeability" patented technology

The invention discloses a hoisting type purification total heat exchanger capable of achieving rapid dehumidification, and belongs to the field of total heat exchangers, the hoisting type purification total heat exchanger comprises a box body, a first air inlet cover and a second air outlet cover are installed at the left end of the box body, a second air inlet cover and a first air outlet cover are installed at the right end of the box body, and a heat exchange core body is installed in the box body; a first draught fan is installed at the position, close to the second air inlet cover, in the box body, and a second draught fan is installed at the position, close to the second exhaust cover, in the box body. Water drops can be ensured to be rapidly and comprehensively removed through left-right movement of the water scraping strip, the water drops are guided by the first liquid guide groove to flow and finally collected in the first water receiving box and the second water receiving box, the drainage efficiency is improved, it is ensured that water in the box body can be drained in time, and the service life of the water scraping strip is prolonged. And the problem of bacterium breeding possibly caused by too high humidity is effectively avoided, so that the cleanness and sanitation of the environment in the box body are maintained, and the service life of the equipment is also prolonged.

The invention discloses a chlorine-resistant polyamide composite nanofiltration membrane and a preparation method thereof. The composite nanofiltration membrane is composed of a polysulfone-based membrane, and a catechol intermediate layer and a polyamide desalination layer which are sequentially arranged on the polysulfone-based membrane, wherein the catechol middle layer comprises a plurality of catechol self-polymerization layers, and catechol is subjected to oxidation self-polymerization and then is constructed on the polysulfone base membrane layer by layer to obtain the catechol self-polymerization layers; and the polyamide desalination layer is constructed on the catechol intermediate layer through an interfacial polymerization reaction. The chlorine-resistant polyamide composite nanofiltration membrane comprises a polysulfone base membrane, a catechol middle layer and a polyamide desalination layer, the catechol self-polymerization middle layer is formed through a layer-by-layer construction technology, certain chlorine resistance is provided, meanwhile, the possibility that the middle layer falls off is reduced, and the stability of the composite nanofiltration membrane is enhanced; the tannic acid is added into a water-phase solution, so that the performance of the polyamide composite nanofiltration membrane is adjusted, and the polyamide composite nanofiltration membrane is endowed with relatively high chlorine resistance.

The invention relates to the technical field of wastewater treatment, and discloses a multi-stage wastewater treatment device for wood production, which comprises a treatment tank, and further comprises a filter cartridge I and a filter cartridge II which are cylindrically arranged in the treatment tank, and the filter cartridge II is positioned in the filter cartridge I and is used for sequentially separating impurities in wastewater; the water outlet pipe is arranged at the bottom of the filter drum II and is used for guiding out the treated wastewater; the water inlet pipe is arranged at the bottom of the treatment tank. By adopting the filter cartridge I and the filter cartridge II, continuous multi-stage filtration from rough filtration to fine filtration is realized, saw dust, fibers and other impurities with different particle sizes are removed at one time, meanwhile, online self-cleaning is synchronously carried out, and rotary filtration and filter screen cleaning are synchronously carried out through motor driving; therefore, the problem that traditional filtering equipment must be frequently shut down and manually cleaned due to quick blockage of a filter screen is solved, continuous and uninterrupted efficient operation of the wastewater treatment process is ensured, and the overall treatment efficiency and production continuity are greatly improved.

The invention discloses a printing and dyeing wastewater treatment and deodorization device, and particularly relates to the technical field of wastewater treatment.The printing and dyeing wastewater treatment and deodorization device comprises a first shell, a second shell is fixedly connected to the right end of the first shell, a wastewater treatment assembly is arranged on the inner surface of the first shell, and an odor treatment assembly is arranged on the inner surface of the second shell. According to the printing and dyeing wastewater treatment and deodorization device disclosed by the invention, the filtering mechanism and the biological treatment mechanism are arranged, so that filtered impurities can be automatically cleaned in a preliminary filtering process of wastewater, and meanwhile, the wastewater flows along an S-shaped path during biological treatment, so that the wastewater can be always in a flowing state; according to the present invention, the retention time of the wastewater can be prolonged so as to prolong the contact time of the wastewater and the biological membrane, such that the microorganisms can completely degrade the organic matters in the wastewater, the treatment efficiency can be improved, the generated biological impurities can be effectively cleaned in the rotation manner, the permeability of the membrane can be maintained, and the wastewater treatment efficiency can be improved.

The invention discloses VOCs adsorption equipment capable of measuring the concentration of VOCs on line, the VOCs adsorption equipment comprises an adsorption purification device, the adsorption purification device comprises a mounting bottom plate, the top surface of the mounting bottom plate is fixedly connected with a heightening support leg, the top end of the heightening support leg is fixedly connected with an adsorption purification column body, and the front surface of the adsorption purification column body is fixedly provided with an integrated control box; a member composed of a left mounting cap, a right mounting cap, a butt joint short pipe and a pretreatment net pipe can be driven to rotate through a performance maintaining assembly, so that interceptors on the surface of the pretreatment net pipe can be thrown away under the action of centrifugal force, the permeability of the pretreatment net pipe is kept, the maintenance frequency is reduced, the waste gas treatment efficiency is improved, and the service life of the pretreatment net pipe is prolonged. The VOCs adsorption equipment is simple in structure and convenient to use, maintenance work can be further simplified, people can clean intercepted objects without interrupting the waste gas treatment process by maintaining the integrated assembly, on one hand, the waste gas treatment efficiency can be improved, on the other hand, maintenance work can be simplified again, and the practicability of the VOCs adsorption equipment is improved.

The utility model discloses automatic production equipment for vacuum pouring of polyurethane soles. The automatic production equipment comprises a lower computer, an upper computer, a left driving device, a right driving device, a pouring mechanism and at least two mold mechanisms matched with the pouring mechanism, the pouring mechanism comprises a glue barrel A, a glue barrel B, a glue pump A, a glue pump B, a first vacuum pump, a glue injection gun head and a vertical driving device which are respectively mounted on the upper computer; each mold mechanism comprises a lower mold mounted on the lower computer, an upper mold of which one side is hinged to one side of the lower mold and of which the top is provided with a glue injection port, an overturning driving device for driving the upper mold to overturn up and down, a heating temperature control device mounted on the lower mold, and a second vacuum pump communicated with a mold cavity of the lower mold through a pipeline. According to the utility model, the left and right driving devices, the upper computer, the pouring mechanism and more than two mold mechanisms are matched, so that a worker can realize automatic production operation of more than two soles per round under the operation of one person, and the production efficiency is high.

The invention discloses a preparation method of a high-selectivity nanofiltration membrane based on a functionalized two-dimensional material, which comprises the following steps: carrying out stripping and freeze-drying treatment on chemically grafted carboxylated molybdenum disulfide powder, then preparing into an aqueous solution, and stirring to obtain a material dispersion liquid; preparing a piperazine aqueous solution as an aqueous phase solution, and preparing a trimesoyl chloride organic solution as an organic phase solution; soaking the polyethersulfone ultrafiltration membrane in the material dispersion liquid, taking out the polyethersulfone ultrafiltration membrane, and carrying out uniform dispersion treatment and surface drying on the polyethersulfone ultrafiltration membrane; and then immersing in a water phase solution, taking out and air-drying, immersing in an organic phase solution, taking out and air-drying again, and carrying out thermocuring treatment to obtain the composite nanofiltration membrane. Hydrophilic groups (carboxyl) are selected to carry out functionalization treatment on molybdenum disulfide and are loaded on the surface of the nanofiltration membrane, the unit charge density and the electrical property of the membrane surface are improved, unique dipole bonds and pi-pi bonds are generated between the carboxyl and salt ions to interact, and the selectivity of the nanofiltration membrane to the salt ions is remarkably enhanced.

The invention relates to the technical field of sewage treatment, and discloses breeding manure wastewater advanced oxidation equipment and a using method thereof.The breeding manure wastewater advanced oxidation equipment comprises a separation mechanism, the separation mechanism further comprises a body, an annular plate is fixedly connected to the outer wall of the body, a shell is fixedly connected to the top of the annular plate, and a driving motor drives a second gear to rotate through a rotating shaft; the second gear is meshed with the first gear, the second gear rotates to force the first gear to rotate, at the moment, the first gear rotates anticlockwise, the first gear rotates to drive an arc-shaped extrusion block to rotate, the arc-shaped extrusion block rotates to extrude waste water entering the position between the shell and the main body, the waste water is extruded, and meanwhile the waste water is blocked by a first baffle; after wastewater is extruded, liquid in the wastewater flows into the main body through the filter screen, and solids in the wastewater are blocked by the filter screen and are left at the top of the annular plate, so that an oxidizing agent can be more uniformly diffused into the wastewater to fully react with organic pollutants when the wastewater is oxidized.

The invention relates to the technical field of circuit board production, and discloses a circuit board production chemical treatment liquid circulation treatment device which comprises a supporting base and a fixing cylinder, the fixing cylinder is fixedly connected into the supporting base, the top of the fixing cylinder is fixedly connected with a driving base, and the bottom of the fixing cylinder fixedly communicates with a conical discharging hopper. A filter screen cylinder is rotationally connected into the fixed cylinder, and the top of the filter screen cylinder fixedly communicates with an inlet pipe; through cooperation of two modes of high-speed rotation and up-down reciprocating vibration, the chemical treatment liquid can be filtered in a vibrating mode again, solid particles with different particle sizes and densities can be more efficiently separated from the liquid through the centrifugal effect of rotation and disturbance caused by vibration, a better separation effect is achieved, large particles can be rapidly deposited through rotation, and the separation efficiency is improved. The vibration can prevent small particles from blocking the filter screen cylinder, and the combination of the two effectively keeps the permeability of the filter screen cylinder, reduces the occurrence of blocking conditions, and ensures continuous filtration.

The invention discloses a gas-solid separation device and system for VOCs waste gas treatment, and relates to the technical field of waste gas treatment devices.The gas-solid separation system comprises a gas return pipeline, a three-way valve, a particle concentration detector, a high-pressure bin, a pressurizing tank and an adsorption system, the gas-solid separation device comprises a separation tank body and an arc-shaped pipeline which is connected with one end of the separation tank body and used for gas inlet, the arc-shaped pipeline is of a bent structure, and a collection box is arranged at the position, close to the side wall of the outer side, of the arc-shaped pipeline; the interior of the separation tank body is of a cone-like structure, and the inner diameter of the separation tank body is gradually reduced from one side, close to the arc-shaped pipeline, of the separation tank body to the other side of the separation tank body to form a conical bin; according to the waste gas treatment device, particulate matters with different particle sizes in waste gas can be finely filtered, and meanwhile, a backflow system is adopted, so that waste gas which does not reach the standard is prevented from entering subsequent treatment steps, and subsequent treatment equipment is prevented from being abraded.

The invention relates to the technical field of environmental protection, and discloses a thermal power plant smoke dust treatment device which comprises a bottom plate, a filter box is fixedly connected to the top of the bottom plate, an air inlet pipe is fixedly connected to the left side of the filter box, a fan is fixedly connected to the top of the bottom plate, and an air suction pipe is fixedly connected between the fan and the filter box. According to the system, heat in the flue gas can be effectively recycled through the treatment mechanism to heat water in the water storage tank, so that the energy utilization efficiency of the whole system is improved, energy waste is reduced, the production cost is reduced, the requirement for additional energy can be reduced by recycling the heat in the flue gas, and the energy utilization rate of the system is improved. The device is simple in structure and convenient to operate, emission of greenhouse gas and other pollutants can be reduced, the environment-friendly requirement for energy conservation and emission reduction is met, meanwhile, heat of the flue gas is transmitted to water in the water storage tank, the temperature of the flue gas can be reduced, heat loads on follow-up flue gas treatment equipment can be reduced, the service life of the equipment is prolonged, and the maintenance cost of the equipment is reduced.

The invention relates to a drum-type soil leaching remediation device which solves the technical problems that when an existing leaching machine is used for remediating soil, the soil is prone to caking, the soil remediation effect is affected, and the permeation efficiency is low in the leaching process, the drum-type soil leaching remediation device comprises a bottom frame, a remediation drum with the two through ends is rotationally installed on the bottom frame, and one end of the remediation drum is fixedly connected with a first-stage screen drum; a first-stage screen drum is fixed outside the remediation roller, a second-stage screen drum is fixed outside the first-stage screen drum, a gap is formed between the first-stage screen drum and the second-stage screen drum, the first-stage screen drum extends out of the second-stage screen drum, leaching pipes are coaxially and rotatably mounted in the remediation roller, the first-stage screen drum and the second-stage screen drum, and a plurality of leaching nozzles are fixed on the leaching pipes. The stirring roller can further scatter and crush large and caked soil in the remediation roller, and the cutting knife in the remediation roller can cut and crush the large and caked soil, so that the remediation efficiency of the soil is improved.

The invention relates to the technical field of wastewater treatment devices, and provides a dechloridation wastewater treatment device which can discharge residual concentrated dechloridation wastewater after dechloridation wastewater treatment while ensuring normal treatment of dechloridation wastewater so as to facilitate collection and retreatment of the residual concentrated dechloridation wastewater. The influence of the discharging step on normal treatment of the dechloridation wastewater is small, meanwhile, active cleaning can be formed on a filtering membrane, the permeability of the filtering membrane is well kept, the overall practicability of the device is better, the device comprises a filtering assembly and further comprises a main body assembly, and the main body assembly comprises a mounting end frame, an auxiliary mounting end frame and a middle boundary frame; the filter assembly comprises an insertion frame and a filter membrane, the insertion frame is provided with an installation opening and a water through hole, the filter membrane is installed in the installation opening, the installation end frame and the auxiliary installation end frame are both fixedly connected with the middle boundary frame, a rotating frame is rotationally connected between the installation end frame and the middle boundary frame, and a gear motor is installed at the front end of the installation end frame.

The present invention discloses a sewage treatment agent spreading device for sewage treatment, which belongs to the technical field of sewage treatment. The sewage treatment agent spreading device for sewage treatment comprises a sewage treatment pool, wherein a mobile mounting frame is symmetrically arranged on both sides of the sewage treatment pool, a fixed chassis is arranged above the sewage treatment pool, a spreading mechanism is arranged below the fixed chassis, a driving reset mechanism is installed below the spreading mechanism, and a vibration powder shaking mechanism is arranged on one side of the mobile inner shell. The present invention uses a crushing hammer to act on the solid powdered sewage treatment agent, so that it is easier and more uniform to contact the pollutants in the sewage, and adopts a vibration powder shaking mechanism to prevent the sewage treatment agent from accumulating on the filter screen. At the same time, by designing the coordinated action of the spreading mechanism and the driving reset mechanism, the treatment agent is avoided from being repeatedly spread in the same area to prevent excessive delivery.

The invention discloses a landfill leachate pretreatment device, and relates to the technical field of landfill leachate treatment.The landfill leachate pretreatment device comprises a tank body, supporting legs are fixedly installed at the bottom of the tank body, a feeding opening is fixedly formed in the top of the tank body, a collecting plate is fixedly installed in the tank body, and a filtering device is arranged in the tank body; a stirring device is arranged in the tank body, a quantitative dosing device is arranged in the tank body, the filtering device comprises a motor, a reciprocating screw rod, a sliding block, a first scraping rod, a filtering plate, a first gear, a rotating wheel, a gear ring, a second scraping rod and a collecting box, and suspended solids and dirt attached to the surface of the filtering plate are removed through movement of the first scraping rod, so that the permeability of the filtering plate is kept; meanwhile, the damage or corrosion of the filter plate caused by dirt accumulation is reduced, the service life of the filter plate is prolonged, and the maintenance and replacement cost of the filter plate is reduced.

The invention discloses a soil remediation device, and mainly relates to the technical field of soil remediation. Comprising a supporting vehicle frame, and a soil surface leveling and repairing mechanism and a soil insertion repairing mechanism are sequentially arranged on the supporting vehicle frame from front to back; a first lifting mechanism is arranged at the top of the soil surface leveling and repairing mechanism and is in sliding connection with the supporting vehicle frame, and a translation mechanism used for driving the first lifting mechanism to slide front and back is arranged on the supporting vehicle frame; the soil insertion repairing mechanism comprises a lifting rod vertically penetrating through the supporting frame and an insertion cylinder arranged on the lower side of the supporting frame, and a second lifting mechanism used for adjusting the height of the lifting rod is arranged on the supporting frame. The second lifting mechanism, the first lifting mechanism, the remediation liquid storage and supply mechanism, the soil compactness sensing and feedback mechanism and the translation mechanism are all in signal connection with the controller. The soil surface remediation treatment quality can be guaranteed, and the problems of secondary pollution and remediation cost increase caused by excessive remediation liquid are solved.

This utility model relates to the field of cell disruption and filtration technology, and more particularly to a self-cleaning, anti-clogging cell disruption and filtration device. The technical solution is as follows: A self-cleaning, anti-clogging cell disruption and filtration device includes a shell, a collection frame, a fixed ring plate, a connecting shaft, and a fixed shell; the collection frame is slidably placed at the lower part of the shell, the fixed ring plate is fixedly connected inside the shell, the connecting shaft is rotatably connected to the upper part of the fixed ring plate, and the fixed shell is fixedly connected to the left side of the shell. This utility model performs preliminary filtration through a filter membrane, trapping larger fragments, while small particles and liquid permeate through the filter membrane into the collection frame. A motor drives the connecting shaft to rotate, causing the filter membrane to rotate slowly, evenly distributing cell fragments and avoiding localized accumulation. When the ultrasonic generator is activated, the high-frequency electrical signal is converted into mechanical vibration, and the resulting "cavitation effect" not only effectively breaks down the cell membrane but also releases the cell contents.

The utility model relates to the technical field of shell-and-tube heat exchangers, in particular to a shell-and-tube heat exchanger with a filtering effect, which comprises a shell, the top of the shell is fixedly connected with a feed inlet, the bottom of the shell is fixedly connected with a support frame, one side of the shell is fixedly connected with a motor, the output end of the motor is provided with a rotating shaft, and the rotating shaft is fixedly connected with the support frame. One side of the rotating shaft is connected with a reciprocating mechanism and a vibrating mechanism, one side of the reciprocating mechanism is connected with a scraping plate, the interior of the shell is fixedly connected with a supporting block, the interior of the supporting block is slidably connected with a filter screen, the scraping plate corresponds to the filter screen, and the vibrating mechanism corresponds to the filter screen; the reciprocating mechanism comprises a rotating rod, the rotating rod is fixedly connected with the rotating shaft, one side of the rotating rod is rotationally connected with a rocker, and the rocker is rotationally connected with the scraper.

The invention provides an earth and rockfill dam piezometric tube device with a desilting function, and relates to the technical field of hydraulic engineering safety monitoring equipment. The earth and rockfill dam piezometric tube device with the desilting function comprises a piezometric tube body, a magnetic stirring structure is arranged at the lower end of the piezometric tube body, a desilting structure is arranged at the upper end of the piezometric tube body, the magnetic stirring structure comprises a servo motor, and a first partition plate is arranged in the piezometric tube body at the upper end of the servo motor. The lower end face of the first partition plate is fixedly connected with a first sealing bearing, and the upper end of the first sealing bearing penetrates through the lower end face of the first partition plate to the upper end face of the first partition plate. Fine particles deposited at the bottom of the hole and water in the pipe are fully mixed and stirred through the magnetic stirring structure to form muddy water, sewage is continuously pumped out through the dredging structure to be filtered and then injected into the pipe body of the piezometric pipe, water is repeatedly pumped out till clear water is pumped out, and the dredging work of the piezometric pipe can be completed.

The application discloses a kind of old photovoltaic module in waste silicon pickling recovery device, belong to old photovoltaic module recycling processing technical field.In prior art, after disassembling, silicon material plate is easy to stack and adhere after being put into material frame, forming pickling dead angle, leading to low silicon recovery rate, insufficient purity.The device includes rack, and acid pickling tank is arranged on the rack;Material frame lifting is arranged on the rack, for containing old photovoltaic module, and the material frame is provided with a plurality of liquid inlet holes for pickling liquid to flow through, and the components can be immersed in the acid pickling tank by being lowered.A plurality of partition rods are provided in the material frame and are arranged at intervals along the length direction of the material frame, and a single partition rod separates adjacent components to form a gap.The device avoids the adhesion of the components by the partition rods, and the liquid inlet holes ensure that the acid solution penetrates fully, eliminating the pickling dead angle, improving the purity and recovery rate of silicon recovery, and the structure is simple and suitable for existing pickling process.

The utility model discloses a novel waterproof oil-filtering breather valve which comprises a valve body and a membrane body, a fixing frame is installed on the inner wall of the valve body, a plurality of blades are arranged in the valve body through a driving shaft, a transmission cavity is formed in the fixing frame, a rotating cavity is formed in the valve body, a transmission shaft is arranged in the transmission cavity in a rotating mode, and the membrane body is arranged in the transmission cavity. The driving shaft and the transmission shaft extend into the rotating cavity and are connected through a rotating mechanism, a connecting shaft is rotationally arranged in the transmission cavity, and the connecting shaft is connected with the transmission shaft through the transmission mechanism. The filter screen is arranged on the surface of the membrane body, the fixing frame, the connecting shaft, the scraping strip and the brush are arranged at the same time, the components are used in cooperation, when the valve body is used, cleaning and brushing operation of the filter screen can be achieved, cleanliness and permeability of the filter screen are guaranteed, and the components enrich the structure and functionality of the valve body.

The invention discloses an ultra-low bath ratio polyester cheese dyeing method. The method comprises the following steps: cleaning polyester yarns; introducing the dye solution into a dyeing machine, and adding a penetrating agent, a leveling agent and a dispersing protective agent to prepare a dyeing solution with the pH value of 4-5; winding the cleaned polyester yarns into cheese, putting the cheese into a dyeing solution according to a bath ratio of 1: (2.5-3), and carrying out high-temperature dyeing at 85-130 DEG C; the dispersion protective agent is prepared from the following reaction monomer raw materials through free radical copolymerization in parts by mass: 10-15 parts of unsaturated carboxylic acid monomer; 12 to 16 parts of alkyl methacrylate; 4-6 parts of styrene; and 4-8 parts of a monomer containing a siloxane group. The polyester yarn with excellent dye uptake, color fastness and leveling property can be obtained under the conditions of ultralow bath ratio and high-temperature dyeing.

The utility model relates to chemical engineering technical field, concretely is a kind of separation device of liquid phase ammonia-containing mixed product, including separation tank, filter box, filter screen, mobile device and filter screen cleaning device, the top of separation tank is installed with connecting pipe, the outer wall of connecting pipe is installed with pump body, the top of connecting pipe is installed with the filter box, the top of filter box is installed with liquid inlet pipe, the inside of filter box is installed with the filter screen, the lateral wall of filter box is installed with collection cover by the mobile device, pass through mobile device and drive collection cover synchronous movement, realize the cleaning of each orientation of filter screen, adopt "filter screen+nanofiltration membrane" two-stage separation mechanism, first rough then fine, improve overall separation efficiency, filter screen cleaning device and mobile collection cover work cooperatively, realize on-line automatic cleaning, the design of filter screen cleaning device makes filter screen can keep clean state, improve the reliability of overall equipment.

The utility model discloses a boiler smoke exhaust device of a thermal power plant, and relates to the technical field of combustion equipment. A boiler smoke exhaust device of a thermal power plant comprises a smoke exhaust treatment box, two filter screen plates and a filter plate cleaning structure are slidably mounted in the smoke exhaust treatment box, the filter plate cleaning structure is located on the smoke exhaust treatment box, and the filter plate cleaning structure comprises two electric telescopic rods, two brush boxes, a connecting hose and a dust collector. An electric telescopic rod drives a brush box to brush the surface of a filter screen plate, a dust suction machine is matched with dust suction holes to suck away impurities on bristles for self-cleaning, the impurities on the surface of the filter screen plate are effectively cleaned away, meanwhile, an exhaust fan reversely purges filtered air to the filter screen plate through a rotating pipe and an air spraying head, and the dust removal efficiency is improved. Residual impurities in the filter screen plate can be deeply cleaned, the cleaning effect of the filter screen plate is greatly improved, the permeability of the filter screen plate is ensured, and the smoke exhaust treatment box always keeps good filtering performance.

The invention provides a dressing. The dressing comprises trehalose, macromolecular hyaluronic acid or salt thereof, middle-molecular hyaluronic acid or salt thereof, and small-molecular hyaluronic acid or salt thereof, the molecular weight of the macromolecular hyaluronic acid or the salt thereof is 2.00-2.30 MDa, the molecular weight of the middle molecular hyaluronic acid or the salt thereof is 1.20-1.60 MDa, and the molecular weight of the small molecular hyaluronic acid or the salt thereof is 0.50-0.70 MDa. The hyaluronic acid gel contains hyaluronic acid or salts thereof with different molecular weights, a phosphate buffer pair, trehalose and sodium chloride, the hyaluronic acid or salts thereof with different molecular weights have different effects, can simultaneously meet the requirements of skin for water absorption, water replenishing and water retention, is matched with glycerol for use, has a synergistic moisturizing effect, and provides a good microenvironment for wound healing.

The utility model discloses a gift packaging box formed through die cutting, and relates to the technical field of packaging boxes. The packaging box comprises an outer box body and an inner box body, the inner box body is arranged in the outer box body in a sliding mode, the outer box body is used for sealing and protecting the inner box body, and the inner box body is used for containing products. Two clamping plates are further included, the two clamping plates are hinged to one side of an opening of the outer box, and clamping grooves are formed in the two clamping plates; the packaging box further comprises a fixing plate which is arranged on one side of the inner box. According to the gift packaging box, due to the innovative design, the packaging box is convenient to open and close, stable to fix and efficient in storage; the sliding structure is matched with the clamping plate fixing plate, so that the structural strength and the lifting stability are enhanced; the fixing belt and the fixing buckle are further sealed and fixed, and safety is improved; in addition, the packaging box can be customized in a die cutting mode according to actual requirements and is suitable for products of different sizes and shapes, and applicability and flexibility are improved.

The invention relates to the technical field of heat insulation glass, in particular to heat preservation and insulation type coated glass. Heat preservation and insulation type coated glass comprises a frame, the frame is fixedly connected with evenly-arranged guide rods, the sides, away from the frame, of the guide rods are slidably connected with sliding sleeves, the evenly-arranged sliding sleeves are jointly and fixedly connected with a movable frame, and an elastic piece is fixedly connected between the movable frame and the frame. First glass is installed on the side, away from the frame, of the movable frame, second glass is installed on the side, close to the first glass, of the frame, a first cavity is formed among the elastic piece, the first glass and the second glass, and the movable frame is rotationally connected with rotating rods arranged in a mirror image mode. The length of the first cavity in the front-back direction is changed by changing the distance between the frame and the movable frame, so that the thickness of the vacuum layer is changed, the length of a heat conduction path between indoor and outdoor is prolonged, and the heat insulation effect is improved.

The application discloses a kind of gas diffusion layer and its preparation method and application, it is related to fuel cell technical field.The gas diffusion layer includes conductive substrate layer and hydrophobic filling layer, multiple channels are opened in conductive substrate layer and pass through its thickness, multiple channels include first channel and second channel different in aperture, and the pore wall surface of channel has hydrophilicity, hydrophobic filling layer is filled in channel and covers the surface of one side of conductive substrate layer, and hydrophobic filling layer has hydrophobicity, wherein, the inner wall surface of channel and the gap between hydrophobic filling layer filled in channel are formed.The present application utilizes the wettability gradient formed by hydrophilic pore wall and hydrophobic filling layer, combines interface gap and multi-level pore array structure, realizes the spatial complementation of liquid water directional discharge and reaction gas efficient permeation, can solve the performance attenuation problem caused by fuel cell cathode waterlogging under high current density, is conducive to improving water management capability and battery output performance.

The application discloses a dust ash pre-wetting mixing device, which comprises a blanking shell, first and second metering belt scales are installed on the top of the blanking shell, a dust ash batching bin is fixed above the first metering belt scale by bolts, a returned ore batching bin is fixed above the second metering belt scale by bolts, a dustproof cover plate is hinged to the top of the blanking shell by hinges, and a stirring cage shell is fixedly connected to the bottom of the blanking shell by flanges. The application solves the problem of insufficient wetting in the traditional process by means of segmented stirring and precise water spraying design. The coarse segment stirring shaft drives large lead screw spiral blades to rapidly disperse the material, the first atomizing nozzle group synchronously sprays water, the material is preliminarily wetted, the fine segment stirring shaft drives small lead screw spiral blades to finely stir, the second atomizing nozzle group supplements water, and the inner arc guide plate guides the material to form a circulating flow, so that the water is ensured to penetrate into the material.