80results about How to "No pollution" patented technology

The invention discloses a production method of distiller's grain fermentation liquid fertilizer specially applied to roxburgh rose. The distiller's grain fermentation liquid fertilizer is prepared bythe step of evenly mixing 50 to 80 parts of distiller's grain fermentation extracting solution, 0.5 to 1 part of microelement, 5 to 10 parts of seaweed meal, 5 to 10 parts of natural active organism,2 to 5 parts of potassium bicarbonate, 2 to 5 parts of natural active organism and 2 to 5 parts of natural surface active agent. A preparation method of the distiller's grain fermentation extracting solution comprises the steps: evenly stirring 50 to 80 parts of distiller's grain, 50 to 150 parts of rice washing water, 1 to 2 parts of EM microflora fermentation liquid and 0.5 to 1 part of sugar, performing composting fermentation at the room temperature to obtain a distiller's grain fermentation material, stirring and extracting through a sodium carbonate water solution, filtering and performing evaporation and condensation on obtained filtrate until the density is 1.1 to 1.2 to obtain distiller's grain fermentation extracting solution. The distiller's grain fermentation liquid fertilizerdisclosed by the invention has a good use effect, meanwhile can effectively prevent pest and disease damage to the roxburgh rose and is high-efficiency environment-friendly liquid fertilizer.

The present application relates to the technical field of centrifuges, and particularly relates to a rapid detection device for laboratory centrifuge components and a working method thereof, comprising a transmission line, a solution tank and a rotary table, the lower side of the rotary table is provided with at least one group of rotatable clamping assemblies, the clamping assemblies are used for clamping a spiral pusher to reciprocate between the solution tank and the transmission line, a plurality of electric telescopic rods II are arranged between the clamping assemblies and the rotary table, the electric telescopic rods II drive the clamping assemblies to lift, the spiral pusher is lowered into the solution tank to perform corrosion resistance test, the inner side of the solution tank is provided with a liftable cylindrical baffle, the cylindrical baffle is lifted away from the solution tank along with the spiral pusher, the clamping assembly drives the spiral pusher to rotate to perform spin-drying, and the present application realizes automatic continuous test function conveniently and efficiently.

The present application belongs to the technical field of biological oil catalytic hydrogenation, and particularly relates to a bio-based oil-soluble molybdenum catalyst, a preparation method and application thereof. The preparation method of the bio-based oil-soluble molybdenum catalyst provided by the present application comprises: mixing a molybdenum source, a bio-based linear organic acid with a carbon atom number of 16 or more and an additive, heating and reacting, and separating to obtain the bio-based oil-soluble molybdenum catalyst; the additive is selected from at least one of tetrahydro naphthalene and decahydro naphthalene. The bio-based oil-soluble molybdenum catalyst green material obtained by the present application has optimal activity and high dispersibility when used, can realize more sufficient mixing with raw materials, forms nano high-dispersed molybdenum sulfide through sulfuration, and realizes high-efficiency hydrogenation refining of oil products through the joint action of hydrogen and sulfur, while reducing the sulfur, oxygen and metal residues in the product oil.

The utility model discloses a kind of wet dust removal devices for steel smelting stew slag smoke dust, including dust removal tower and wet electric dust collector, the inside of dust removal tower is spaced apart and is provided with multiple isolation ring plates, the inboard of isolation ring plate is fixed with water tank, the upper portion of water tank side wall is evenly distributed with multiple L-shaped ventilation pipes, the end of L-shaped ventilation pipe is stretched into the lower part of water tank downwards, the bottom of water tank is provided with drain pipe, the lower part of dust removal tower is provided with air inlet pipe, the end of air inlet pipe is bent downwards after being stretched into dust removal tower, the upper portion of dust removal tower is provided with center water pipe, multiple layers of spray pipes are spaced apart and are provided on center water pipe, the top of dust removal tower is communicated with wet electric dust collector by exhaust pipe. Above all, the utility model has the advantages of high dust removal efficiency, good dust removal effect, safety and environmental protection.

The present application relates to the separation of fermentation liquor, and discloses a method for extracting succinic acid from malic acid fermentation liquor. The method comprises the following steps: (1) solid-liquid separation I of the fermentation liquor, and collection of liquid phase I; (2) mixing and standing of the liquid phase I, polyaluminum chloride, polyacrylamide and diatomite, and then solid-liquid separation II and concentration, and collection of concentrated liquid; (3) pH adjustment of the concentrated liquid to 1-3, and then obtaining acidified liquid; (4) solid-liquid separation III of the acidified liquid, and then obtaining liquid phase II; (5) decolorization and separation of the liquid phase II, and then obtaining succinic acid. The method is free of organic pollution, environment-friendly, and can effectively improve the purity and yield of the prepared succinic acid.

This invention relates to the field of microbial technology, specifically to a strain of *Bacillus laterosporus* and its applications. The *Bacillus laterosporus* provided by this invention (… Brevibacillus laterosporus HNBR05-1 is deposited at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC No. 25886. *Bacillus laterosporus* HNBR05-1 exhibits highly effective inhibition of plant pathogens, demonstrating dual efficacy against plant diseases such as brown spot and bacterial leaf spot, with high control efficacy. It shows promising application prospects in plant disease control and lays the foundation for the development of highly effective biocontrol agents.

The utility model belongs to chemical industry wastewater treatment technical field, concretely relates to a device for removing the hardness of desulfurization wastewater. Including coagulation tank I, coagulation tank II, flocculation tank, plug -flow lift tank, inclined plate sedimentation tank, neutralization tank, coagulation tank I bottom is connected with wastewater import pipeline, top is connected in coagagulation tank II through overflow, coagulation tank II bottom is connected in the flow guide cylinder of flocculation tank through the flow guide pipe, in its bottom other side is connected in plug -flow lift tank, plug -flow lift tank top is connected in inclined plate sedimentation tank through overflow, the other side of inclined plate sedimentation tank top is connected in neutralization tank through overflow, neutralization tank bottom is connected in the outer jacket through the opening, and the opening in the upper portion of outer jacket is connected with outlet pipeline, and the bottom conical concentration area side of inclined plate sedimentation tank is equipped with sludge production recycling pipeline connection to flocculation tank. The utility model has relatively simple structure, and the effect of removing hardness is obvious.

The utility model discloses a culture bottle for indoor soil culture, and relates to the technical field of soil sample culture. A 150 cylindrical brown glass wide-mouth bottle is selected as the culture bottle, the brown glass can prevent light pollution, the culture effect and quality can be further guaranteed, the cylindrical culture bottle can be arranged in the culture box in the maximum volume mode, the bottom of each silicone tube extends into the bottom of the culture bottle, and therefore the culture effect and quality are improved. Through the arrangement, gas in the culture bottle can be fully exchanged; by arranging the three-way valve, the installation stability of the silica gel tube can be guaranteed, nitrogen blowing can be carried out on the interior of the silica gel tube to guarantee the CO2 background value of a culture bottle, repeated uncovering is not needed, sample pollution is avoided, and continuous sampling measurement of a soil sample culture experiment is facilitated; the purpose of rapid sampling can be achieved through the injector, and the cultivation effect and quality are guaranteed.

This utility model relates to a clamping and fixing tool for disassembling and assembling a speed sensor. The clamping and fixing tool is used for positioning and clamping the speed sensor. The tool includes a first support rod, a second support rod, and a handle. The handle is fixed to the top of the first support rod. The top of the second support rod is telescopically connected to the bottom of the first support rod. When the clamping and fixing tool is in use, the bottom of the second support rod is connected to the speed sensor. Compared with the prior art, the clamping and fixing tool of this utility model can be applied to the positioning and clamping of sensors in narrow, confined spaces, and provides reliable support for the operation of this type of equipment, thereby improving work efficiency and avoiding quality risks caused by tool unreliability.

This utility model relates to a large-scale hot air circulating roaster with an externally located combustion chamber; it includes a feeder connected to a top hopper of the roaster, the bottom of which is connected to a discharge pipe, the bottom outlet of which is connected to the roaster drum for feeding, the bottom of which is connected to the hot air outlet of the combustion chamber pipe, the other end of which is connected to the combustion chamber, a burner is installed outside one end of the combustion chamber, the hot air generated by the burner is transferred to the inside of the combustion chamber through a fire shield inside the combustion chamber, one side of which is connected to one end of the hot air pipe, the hot air pipe passes through the air inlet at the top of the hot air dust collector, the air outlet of which is connected to the rear half of the hot air pipe, and the end of the rear half of the hot air pipe is connected to the top of the afterburner; it has the advantages of reasonable structural design, recycling of heat energy, improved thermal efficiency, treated exhaust gas before emission, no environmental pollution, and better roasted coffee bean taste.

This invention discloses a construction equipment and method for strengthening floor surfaces. The equipment includes a mobile frame, a traveling assembly mounted on the mobile frame, a liquid storage tank, and a scraping mechanism. The liquid storage tank is connected to a feeding pipe via a pump body. The scraping mechanism includes a scraper that reciprocates horizontally along the width of the mobile frame. Adjustable blocking elements are provided at both ends of the scraper, which are used to switch the movement direction of the scraper. The feeding pipe is located inside the scraper. During construction, the scraping width is set by adjusting the blocking elements. The adhesive enters between two mounting bodies through the feeding pipe. The lifting trowel automatically changes direction and rises during its reciprocating motion, achieving continuous and uniform horizontal scraping. This invention has a compact structure, adjustable scraping width, and reliable reversing action, effectively preventing adhesive overflow and backside contamination, significantly improving the construction quality and efficiency of the floor surface strengthening layer.

This application provides a water-based anti-corrosion and wear-resistant coating and its preparation method. The preparation method includes uniformly mixing modified MXene nanosheets with a water-based epoxy resin emulsion to obtain a premixed emulsion; under stirring conditions, adding polytetrafluoroethylene powder, titanium dioxide, alumina, a substrate wetting agent, a dispersant, a defoamer, a surface adhesion promoter, deionized water, and a curing agent sequentially to the premixed emulsion, and mixing uniformly to obtain the water-based anti-corrosion and wear-resistant coating. The water-based anti-corrosion and wear-resistant coating of this application, by adding polytetrafluoroethylene and modified MXene nanosheets, improves both the anti-corrosion performance and wear resistance of the water-based coating, overcoming the slight deficiency in anti-corrosion and wear resistance of existing water-based coatings.

The utility model provides a ladder cage prefabricated foundation which comprises a concrete prefabricated slab, and the concrete prefabricated slab is provided with a foundation fixing structure used for fixing the concrete prefabricated slab on the ground and a ladder cage fixing structure used for fixing a ladder cage on the concrete prefabricated slab. The elevator cage connecting structure comprises a metal connecting block used for being welded to the elevator cage body and an elevator cage connecting threaded column poured on the concrete prefabricated plate, and the elevator cage connecting threaded column penetrates through the metal connecting block and then is in threaded connection with an elevator cage connecting nut so that the metal connecting block can be fixed to the concrete prefabricated plate. The utility model aims to provide the removable ladder cage prefabricated foundation for fixing the ladder cage, and solves the problems that the installation speed is slow and waste pollution is generated as the foundation needs to be manufactured on site when the existing ladder cage is used.

This invention discloses a microcapsule-modified self-healing mortar, its preparation method, and its application, belonging to the technical field of stone cultural relic protection and restoration materials. The microcapsule-modified self-healing mortar, by mass percentage, comprises the following dry materials: 50%-70% hydraulic lime, 12%-24% nano-kaolin, 15%-25% quartz sand, 0.05%-0.2% additives, and 0.25%-2% microcapsule powder; wherein the core material of the microcapsules in the microcapsule powder is tung oil, and the wall material is barium alginate. The microcapsule-modified self-healing mortar possesses high weather resistance, excellent compatibility, and long-term durable self-healing function. By introducing tung oil-barium alginate microcapsules, the microcapsule-modified self-healing mortar synergizes with traditional restoration mortar raw materials, enabling the mortar material to trigger active repair components in the early stages of deterioration, achieving self-healing and self-repair effects.

The present invention provides a robot cleaning system. The robot cleaning system includes a cleaning robot, and a base station for the cleaning robot to stop. The cleaning robot includes: a main body; a walking module, arranged on the main body and driving the cleaning robot to move on a working surface; a mopping module, movably connected to the main body and including a replaceable cleaning layer, where the mopping module includes at least a first state and a second state, in the first state, the cleaning layer is fitted to the working surface, and in the second state, the cleaning layer is separated from the working surface, so that a working surface of the cleaning layer is exposed and is in contact with a cleaning layer removal mechanism; a driving mechanism, configured to drive the mopping module to switch between the first state and the second state; and a control module, configured to at least control the driving mechanism to drive the mopping module to switch from the first state to the second state when the cleaning layer needs to be replaced. The cleaning robot in the present invention has an intelligent mopping module, which can facilitate replacement of the cleaning layer.

This application provides a composite wound dressing and its preparation method, belonging to the field of medical dressing technology. The composite wound dressing includes an outer support layer and an inner functional layer. The outer support layer is a modified ramie fiber nonwoven fabric, the modification including low-temperature plasma treatment and acetylation modification of the ramie fibers. The inner functional layer is a composite of ramie woven fabric and low-antigen collagen sponge grafted with carvacrol. The collagen sponge penetrates the yarn gaps and pores of the woven fabric, forming a structure in which the collagen sponge and ramie fibers mutually wrap and interweave. The dual-layer structure design of the dressing, with its outer support layer and inner functional layer, provides stable mechanical support through the outer layer to maintain the dressing's shape, while the inner layer enables efficient absorption of exudate and sustained release of antibacterial components, actively promoting wound healing. It exhibits excellent biocompatibility and low immunogenicity risk.

The application provides a method for simultaneously synthesizing thioether compounds and nitrile compounds, and belongs to the technical field of organic synthesis; the thioamide compound, fluoride and acetonitrile are mixed, then a phenylacetylene precursor is added, so that the thioether compound and the nitrile compound are simultaneously synthesized at room temperature; the method is simple and fast, does not need transition metal catalysis, has a wide substrate range, the fluoride source used is cheap and easy to obtain, and does not cause environmental pollution; the method has the advantages of simple process, mild reaction condition, good universality and the like, and the yield of the synthesized thioether compound and nitrile compound is very high, the thioether compound and the nitrile compound can reach 98% at most, and has extremely high industrial popularization value.

This invention discloses a hot melt adhesive for high-temperature protective clothing and its preparation method, comprising the following raw materials: Fischer-Tropsch wax, styrene-isoprene-styrene block copolymer with 0% diblock content, styrene-isoprene-styrene block copolymer with 20-30% diblock content, styrene-isoprene-styrene block copolymer with 40-50% diblock content, rosin resin, petroleum resin, ethylene-vinyl acetate copolymer, and antioxidant. This hot melt adhesive requires no toxic solvents, possesses both heat resistance and water resistance, and is suitable for high-temperature protective clothing. The preparation method of this hot melt adhesive involves heating and mixing polymer materials without adding any solvents or toxic substances during the preparation process, reducing the risk of toluene poisoning, completely solving the problems of solvent evaporation and recovery, and, more importantly, eliminating safety hazards in the storage and use of organic chemicals, achieving environmentally friendly, safe, and efficient production.

The utility model provides a coal sewage treatment device which is characterized in that the top of a filter tower is communicated with a feed port, the side wall of the filter tower is also fixedly connected with a first connecting column, a second connecting column and a third connecting column, the first connecting column is sleeved with a first hollow shaft, the first hollow shaft is fixedly connected with a coarse filter layer, and the second connecting column is sleeved with a second hollow shaft; the second hollow shaft is fixedly connected with the fine filtering layer. The utility model aims to solve the problem that meshes of a filter plate are easy to block when sludge, coal ash and water in coal sewage are separated and filtered. The problem that a filtering layer needs to be frequently cleaned and replaced after blockage is solved, the device is particularly suitable for filtering coal-containing sewage generated by washing a coal conveying gallery in a coal port enterprise so as to prevent the sewage from polluting the ground, and meanwhile coal slime can be conveniently collected and cleaned.

A portable automobile air conditioner refrigerant adding device comprises a filling head, a connecting hose, a pressure gauge and an adaptive connector. The filling head is connected with a refrigerant outlet for filling refrigerants in a sealed mode, and the filling head comprises an automatic pressing reset type sealing valve and a bevel pipe connected with a valve element of the automatic pressing reset type sealing valve. The bevel pipe is connected with the connecting hose in an inserted mode, and the connecting hose comprises a first connecting hose body and a second connecting hose body. The filling head is connected with the pressure gauge through the first connecting hose, the pressure gauge is connected with the adaptive connector through the second connecting hose, and the adaptive connector is connected with a low-pressure port of the automobile air conditioner, so that filling operation and connecting operation can be conveniently realized, the sealing performance is good, and filling of refrigerant of the automobile air conditioner can be accurately controlled; and meanwhile, a leakage detection function is also realized.

The utility model relates to the technical field of tobacco shred processing, and discloses a two-way tobacco shred conveying mechanism and a tobacco shred dryer. Wherein the two-way tobacco shred conveying mechanism comprises a blanking device, a feeding cover, a frame body assembly and a two-way conveying belt, the blanking device is used for conveying tobacco shreds, and a blanking hole is formed in the lower portion of the blanking device; the feeding cover is located below the blanking device, a feeding hole is formed in the upper portion of the feeding cover, and the feeding hole is connected to the blanking device through a hose; the feeding cover is located above the frame assembly, the feeding cover is detachably connected to the frame assembly, and a containing cavity is formed between the feeding cover and the frame assembly; the two-way conveying belt extends in the first direction and is arranged in the containing cavity. Tobacco shreds conveyed by the discharging device can be conveyed to the two-way conveying belt through the hose and the feeding hole. A first discharging hole and a second discharging hole are formed below the two ends, in the first direction, of the containing cavity, and the first discharging hole and the second discharging hole are located in the two ends of the two-way conveying belt. According to the utility model, the phenomenon of material scattering is avoided, and overhaul and maintenance are convenient.

The invention relates to a method for improving epoxy resin performance based on a honeycomb structure and bionic honeycomb epoxy resin.The improving method comprises the steps that a metamaterial framework based on the honeycomb structure is obtained through 3D printing of a dual-curing epoxy resin matrix, and then oriented bionic honeycomb framework composite resin is obtained through casting molding; the preparation method specifically comprises the following steps: S1, preparing a dual-curing epoxy resin matrix according to S2, selecting a skeleton shape and a skeleton filler material, drawing a three-dimensional model of the oriented bionic honeycomb skeleton, printing and curing a dual-curing epoxy resin matrix by adopting a photocuring 3D printing technology, and arranging the skeleton filler in the printing direction to obtain the oriented bionic honeycomb skeleton; and S3, carrying out pouring filling on the bionic honeycomb skeleton by adopting thermocuring resin, carrying out curing treatment, and cooling to obtain the oriented bionic honeycomb skeleton composite resin. The epoxy resin material has higher heat-conducting property under the condition of low filler content, and the mechanical property of the epoxy resin material is also improved to a certain extent by the skeleton structure.

The application provides a multi-layer core-shell structure composite slow-release oxygen particle and a preparation method thereof, which comprises a three-layer structure of a weight-increasing core, an oxygen-releasing intermediate layer and a functional surface layer. The weight-increasing core is a high-density inorganic microsphere selected from one or more of alumina microspheres and silica microspheres, and the composition of the weight-increasing core is a binder and calcium peroxide, and the weight-increasing core has a long-acting slow-release oxygen function, wherein the binder is selected from one of sodium alginate, xanthan gum and guar gum; the composition of the outer shell layer is a binder, a porous adsorption material and a catalytic functional material, wherein the binder is physically crosslinked PVA, the adsorption functional material is selected from one or more of biochar powder, zeolite powder, diatomite and attapulgite, and the catalytic functional material is selected from one or more of iron-carbon powder, nano-iron powder and pyrite powder.

This invention discloses a water quality monitoring stratified sampling device, comprising a sampling bucket, a support rod at the top of the sampling bucket, an air rod inserted through the middle of the support rod, the air rod penetrating the sampling bucket, a piston plate at the bottom of the air rod, an exhaust channel on one side of the piston plate, and an opening and closing part within the exhaust channel; a locking rod on one side of the support rod, the outer end of the locking rod locking into a lock hole on the top side of the sampling bucket, a rope on the outer side of the locking rod, and a float at the other end of the rope; a main water inlet at the center of the bottom of the sampling bucket, with a valve on the main water inlet; several water outlets on one side of the sampling bucket, with water outlet pipes connected to the water outlets; several rotating parts inside the sampling bucket, dividing the interior of the sampling bucket into several sampling chambers, with an auxiliary drive part at one end of each rotating part, which is installed on the outer wall of the sampling bucket, to achieve independent segmentation of water samples at different depths, effectively avoiding cross-contamination between water samples and improving the accuracy of monitoring data.

This application provides a lubricating oil external circulation system for a gearbox-type reducer, including a gearbox housing with a meshing pinion and a large gear inside. It also includes a hollow shaft joint with a lubrication gear fitted on it, meshing with either the pinion or the large gear. The lubrication gear is positioned above the pinion or the large gear. Hollow tubes are located at both ends of the hollow shaft joint, forming an outer tube. The hollow tubes have an inner conical surface, and the inner wall of the hollow shaft joint has an arc-shaped cavity. Multiple through holes are provided circumferentially in the hollow shaft joint. The system also includes a insert box with a first filter outlet at its lower end. A connector is located at the lower end of the gearbox housing, and the insert box is inserted into the connector. An oil outlet is located at the bottom of the gearbox housing, communicating with the inside of the insert box, which contains a filter element. A detachable inner tube is fitted inside the outer tube, with multiple oil seepage channels circumferentially within it. The insert box, drive pump, and inner tube are sequentially connected, solving the problem of traditional gearboxes requiring shutdown for lubricating oil replacement.

This invention belongs to the field of casting post-treatment technology and discloses a sand removal device and method for cylinder head castings, including a frame, an ultrasonic sand removal tank, a contact ultrasonic component, a high-pressure jet component, and a water circulation component. The ultrasonic sand removal tank is installed on the top surface of the frame, and ultrasonic transducers are arranged on the inner wall of the ultrasonic sand removal tank. The contact ultrasonic component includes a clamp support, a contour clamp, and ultrasonic units. The clamp support is fixedly connected to the frame, and the contour clamp is detachably connected to the clamp support and suspended in the ultrasonic sand removal tank. The casting is placed at the bottom of the contour clamp, and multiple ultrasonic units are installed on the top of the contour clamp and are in contact with the surface of the casting. The high-pressure jet component includes a high-pressure jet nozzle arranged on the inner wall of the ultrasonic sand removal tank, which sprays water into the inner cavity opening of the casting. The water circulation component includes a water storage tank, which is connected to the ultrasonic sand removal tank and the high-pressure jet nozzle. This invention does not produce toxic substances that pollute the environment and has the technical effect of improving the sand removal quality of cylinder head castings.

The utility model relates to the technical field of semiconductor preparation, in particular to a quantitative glue pump. Comprising a support I, a shaft sleeve, a cavity, an elastic connecting sleeve and a horizontal linear driving mechanism, the horizontal linear driving mechanism is arranged on one side of the support I, the output end of the horizontal linear driving mechanism is connected with the shaft sleeve horizontally penetrating through the support I, the shaft sleeve is sleeved with the elastic connecting sleeve, and one end of the elastic connecting sleeve is connected with the tail end of the shaft sleeve; the other end of the elastic connecting sleeve is connected with the bracket I; the cavity is arranged on the other side of the bracket I and clamps the elastic connecting sleeve; the horizontal linear driving mechanism drives the elastic connecting sleeve to horizontally stretch out and draw back through the shaft sleeve, so that the volume of an inner cavity of the cavity is changed, and glue injection or liquid suction of the cavity is achieved. The inner cavity is free of friction, friction particles are not generated, pumped liquid is not polluted, and quantitative glue pumping is achieved.

The invention discloses an amine waste liquid treatment system and method. The system of the present application comprises: an amine liquid tank; the first input end of the fractionating tower is connected to the output end of the amine liquid tank through a positive displacement pump, a first valve and a first filter, the first output end of the fractionating tower is connected to the input end of an evaporator, the second input end of the fractionating tower is connected to the output end of the evaporator, and the evaporator is used for evaporating the mixed solution to be treated; the fractionating tower is used for carrying out gas-liquid separation treatment on the gas-liquid mixture to obtain concentrated amine waste liquid and water vapor; the first input end of the waste liquid storage box is connected to the second output end of the fractionating tower; the output end of the waste liquid storage box is connected to the first input end of the burner nozzle through a second valve, a booster pump, a first flow meter and a second filter, and the second input end of the burner nozzle is connected to the high-pressure carbon dioxide gas input port through a second flow meter and a third valve.

The utility model belongs to the technical field of water treatment relates to a kind of domestic ceramic membrane purifier, including filter element, filter drum and two end caps, and the end cap of two ends is respectively provided with water inlet and water outlet and is connected with the porous channel in filter element, water outlet connected with the water purification channel outside filter element is provided on the filter drum, the both ends of the filter drum are fixed with connecting ring, the inner wall end portion of the connecting ring away from filter drum is provided with first taper surface, the inner wall end portion of the end cap close to filter drum is provided with second taper surface, the first taper surface, second taper surface and filter element outer wall form sealed cavity, O-ring is provided in the sealed cavity, the contact surface of O-ring and first taper surface, second taper surface and filter element outer wall all form sealing structure.The domestic ceramic membrane purifier provided by the utility model has the advantages of simple structure, small pollution, high flux, long service life and low use cost.

The application provides application of a polyoxyethylene-polyoxypropylene-polyoxyethylene tri-block copolymer in a foam extinguishing agent. The application also provides a foam extinguishing agent, which is a heat-responsive gel foam extinguishing agent based on the polyoxyethylene-polyoxypropylene-polyoxyethylene tri-block copolymer, and has heat response capability and excellent extinguishing performance. The heat-responsive gel foam extinguishing agent provided by the application exhibits good fluidity and foaming performance at normal temperature, and once the temperature reaches the critical gel temperature of the foam solution, the flowing foam rapidly changes into a gel foam in situ, and the stability of the foam is significantly improved. The foam extinguishing agent can be widely used in A and B class fires and other fires. In particular, the foam extinguishing agent forms a high-stable gel foam when extinguishing a fire, and has excellent anti-reignition performance.