813 results about "Chemical cleaning" patented technology

The invention relates to a cooling tower device for recovering heat from waste steam, which adopts three layers of transversely arranged heat exchange tube groups, realizes cascade recovery of heat energy of waste steam through communication of an air inlet and an air outlet, and is additionally provided with fins on the surfaces of heat exchange tubes to enhance the gas-liquid mass transfer efficiency. The core innovation lies in that a built-in mechanical cleaning mechanism is arranged, a driving assembly is in linkage with multiple sets of bidirectional adapters through a rotating shaft, brush rods distributed in the circumferential direction are driven to conduct high-frequency physical scraping on heat exchange pipes and fins, scale deposition is effectively restrained, and compared with traditional chemical cleaning, the shutdown maintenance time is shortened; the steam latent heat recovery rate can be increased, meanwhile, secondary pollution is avoided through a full-mechanical cleaning scheme, modular layout is adopted in structural design, interlayer fluid distribution of the heat exchange pipe set is achieved through a U-shaped pipe and a straight pipe, it is ensured that the resistance coefficient of the system is lower than that of similar equipment, and the device has remarkable energy-saving benefits in industrial scenes such as chemical engineering and metallurgy.

The invention discloses industrial-grade mixed oil produced by utilizing kitchen waste oil and a preparation method of the industrial-grade mixed oil, and belongs to the technical field of recycling of the kitchen waste oil. The invention relates to industrial-grade mixed oil produced by using kitchen waste oil and a preparation method thereof, and the preparation method comprises the following steps: firstly collecting kitchen waste containing the waste oil, and storing the kitchen waste in a container through special equipment; carrying out screen solid-liquid separation, cleaning grease on the surface of the solid waste, and then carrying out precipitation separation; then carrying out centrifugal separation, chemical cleaning, water washing, acid treatment, dehydration, degumming and metal ion removal on the separated grease and oil-containing liquid; carrying out ultrasonic-assisted multistage ester exchange after enzymolysis optimization, carrying out membrane separation on glycerol and fatty acid methyl ester, and carrying out reduced pressure distillation to obtain a high-purity fraction; carrying out adsorption refining, plasma treatment and supercritical fluid extraction; finally, nano particles are added and blended with additives, efficient recycling of the kitchen waste oil is achieved, and then high-purity industrial-grade mixed oil is prepared.

The invention relates to the technical field of water resource monitoring, in particular to a combined type automatic backwashing filter which comprises a tank body, a separation disc, a backwashing mechanism and a filter element, an inlet pipe, an outlet pipe and a discharge filter pipe are arranged on the outer wall of the tank body, the separation disc is fixed to the inner wall of the tank body, and the backwashing mechanism comprises a physical cleaning assembly and a chemical cleaning assembly. The physical cleaning assembly intermittently moves along the circumference, the chemical cleaning assembly quantitatively feeds chemicals in a segmented mode in the vertical direction, and the multiple filter elements are arranged at the top end of the separation disc in a circumferential array mode and matched with the through holes. Through the synergistic effect of circumferential intermittent movement of the physical cleaning assembly and vertical sectional quantitative dosing of the chemical cleaning assembly, physical washing and chemical treatment are synchronously achieved in the back washing process, viscous pollutants and microbial films are effectively removed, the risk of secondary pollution is reduced, meanwhile, energy consumption is reduced, the service life of a filter element is prolonged, and the service life of the filter element is prolonged. The device has the advantages of efficient cleaning, reliable operation and good economical efficiency.

The invention discloses a biological environment-friendly clothing material with a self-cleaning function and a preparation method of the biological environment-friendly clothing material. According to the invention, the environmental friendliness is obviously improved, and natural components which can be completely biodegraded are adopted and can be quickly decomposed in the natural environment, so that the micro-plastic pollution is reduced; the self-cleaning function is enhanced, and through the synergistic effect of the bionic hydrophobic surface and photocatalytic decomposition, automatic falling and decomposition of stains are achieved; the durability is enhanced, a dynamic self-repairing network can automatically repair daily wear, the service life is prolonged, and the bio-based raw materials are natural, skin-friendly and excellent in air permeability. The supercritical fluid processing and microwave shaping technology replaces a high-energy-consumption process; emission of toxic substances is eliminated, and organic solvents and fluorine-containing compounds are forbidden in the whole process; raw material loss is reduced, and the using amount of functional materials is reduced through an accurate structure regulation and control technology; the maintenance cost is simplified, and the washing frequency and the use of chemical cleaning agents are reduced due to the self-cleaning characteristic; waste is compressed, and resource utilization of by-products is achieved through a closed-loop production system.

The invention belongs to the technical field of wafer production equipment, and particularly relates to wafer double-sided cleaning equipment. The feeding and discharging device and the cleaning system are arranged on the two sides of the carrying assembly, and the carrying assembly is used for transferring wafers between the feeding and discharging device and the cleaning system; the cleaning system comprises a machine frame, a double-face scrubbing mechanism and a secondary cleaning device, wherein the double-face scrubbing mechanism and the secondary cleaning device are arranged on the machine frame. The double-face scrubbing mechanism is used for physically scrubbing the double faces of a wafer. And the liquid medicine spraying mechanism and the two-fluid cleaning mechanism are used for chemically cleaning the top surface of the wafer. The wafer cleaning device is used for solving the problem of poor wafer cleaning effect. The double-sided scrubbing mechanism in the cleaning system can perform double-sided scrubbing on a physical layer on the wafer, then the wafer is conveyed to the wafer placement position through the carrying manipulator for secondary chemical cleaning, and the bottom surface of the wafer is flushed and protected by the bottom surface flushing device, so that impurities are prevented from being attached to the bottom surface of the wafer, and the cleaning effect is improved.

The invention relates to the technical field of industrial wastewater treatment, and discloses an efficient two-stage reverse osmosis petroleum coke water treatment system, which comprises pretreatment execution ends, a reverse osmosis core end, a concentration regeneration end and an intelligent control end which are commonly configured with a data feedback module. A step-by-step mechanism is established at the initial stage of wastewater treatment, quartz sand is adopted to intercept large-particle suspended solids, activated carbon is adopted to adsorb and degrade organic matters, softening resin is adopted to replace and remove scaling ions, ozone is adopted to catalyze, oxidize and decompose refractory pollutants, an oxidation-reduction potential dynamic regulation and control mechanism is innovatively introduced, and the dosage of an oxidizing agent is automatically regulated according to water quality and chemical quality; by means of the design, the blocking problem caused by high-hardness waste water is solved, the membrane is prolonged, the solution period is stably solved, the chemical cleaning frequency and agent consumption are reduced, a pollution early warning and closed response linkage mechanism is constructed, membrane damage caused by manual intervention delay is avoided, and the service life of membrane elements is prolonged and reduced.

The embodiment of the invention provides a cleaning and polishing control system and method for a track axle box, which is applied to automatic axle box cleaning and polishing equipment and comprises the following steps: generating an optimal cleaning path and an optimal polishing path according to an axle box three-dimensional model or visual scanning data; pressure and rotating speed parameters are dynamically adjusted according to sensor feedback, operation parameters and fault logs are recorded, and quality tracing and time sequence optimization of cleaning and polishing are supported; the axle box is fixed to a station through a conveying belt or a mechanical arm, and a visual system scans and positions the surface state; large-particle dirt is removed through high-pressure spraying, grease is dissolved through a chemical cleaning agent, and waste water is recycled through a filtering system; the mechanical arm preliminarily polishes the rusted and burr areas according to a preset path; the pressure and rotating speed of the grinding head are adjusted according to feedback of the sensor to realize uniform surface polishing; the cleaning efficiency is improved, the production efficiency is improved, the labor intensity is reduced, the production cost is reduced, customized solutions are adapted according to different production environments and production modes, and an automatic smart factory is built.

The invention relates to the technical field of composite resin preparation, and discloses a silicon-molybdenum alloy target material preparation method which comprises the following steps: preparing raw materials, selecting molybdenum powder and silicon powder with the purity not lower than 99.9%, mixing, putting the raw materials into a vacuum mixer, vacuumizing to 0.01-0.1 Pa, stirring for 1-5 hours, carrying out ultrasonic assistance, controlling the temperature to 25-40 DEG C to prevent oxidation, and carrying out a forming process. Filling the mixed powder into a detachable hard alloy mold coated with a 0.05-0.2 mm boron nitride coating, carrying out cold press molding, maintaining the pressure for 5-20 minutes to obtain a biscuit, sintering, putting the biscuit into a vacuum sintering furnace, firstly carrying out microwave-assisted heating, then raising the temperature to 1500-1800 DEG C, introducing trace argon in the later period to regulate and control a structure, carrying out a post-treatment process, carrying out numerical control processing on a sintered target material, carrying out chemical cleaning on the mixed solution of hydrofluoric acid and nitric acid, and finally carrying out vacuum sintering. Performing plasma treatment; and finally, performing vacuum packaging and filling high-purity nitrogen. The raw materials are high in purity and excellent in granularity; uniformly mixing and preventing oxidation; forming and sintering are precisely controlled, and the quality of the target material is guaranteed; the surface performance is improved through post-treatment, packaging is oxygen-proof and moisture-proof, and the target material meets the high-end industry requirement.

The invention discloses an efficient glass fiber plate cleaning and drying process which comprises the following steps: S1, pretreatment: performing appearance inspection on a to-be-cleaned glass fiber plate, and removing unqualified plates of which the surfaces are obviously damaged and cracked; s2, pre-cleaning: putting the glass fiber plate subjected to primary treatment into an ultrasonic cleaning tank, injecting clear water into the cleaning tank, enabling the liquid level of the clear water to completely submerge the glass fiber plate, starting an ultrasonic generator at the same time, and separating dust, loose chippings and other impurities on the surface of the glass fiber plate through the cavitation effect of ultrasonic waves to complete pre-cleaning; and S3, chemical cleaning, wherein after pre-cleaning is completed, the glass fiber plate is fed into a chemical cleaning tank containing alkaline pre-cleaning liquid. According to the technology, multiple cleaning procedures are combined with ultrasonic waves, chemical reagents and nano-particles, vacuum and hot air drying are matched, efficient cleaning and rapid drying of the glass fiber plate are achieved, few impurity residues exist, the water content is low, the surface flatness is good, parameter adaptability is high, energy is saved, environment friendliness is achieved, and the automation degree is high.

The invention belongs to the technical field of TG-DSC testing of metal powder materials, and particularly relates to an anti-oxidation high-precision TG-DSC testing method of high-temperature alloy powder, which comprises the following steps: placing the high-temperature alloy powder in a furnace body of a TG-DSC instrument, carrying out high-purity argon replacement on the atmosphere in the furnace body by taking high-purity argon as furnace body purging gas, and carrying out high-purity argon replacement on the atmosphere in the furnace body; the initial oxygen content in the furnace body is reduced to 0.1 ppm or below; continuously introducing hydrogen-argon mixed gas as flowing gas into the furnace body, controlling the temperature of the furnace body to be increased to a target temperature, and ending the test to obtain a TG curve and a DSC curve of the to-be-tested high-temperature alloy powder; according to the invention, through physical cleaning of oxygen in the furnace body by circulating vacuumizing before testing and chemical cleaning of oxygen permeating into the furnace body by hydrogen-argon mixed gas in the whole process in the testing process, a dual anti-oxidation barrier is constructed, so that oxidation weight increment and oxidation heat release interference of a powder sample are eliminated fundamentally; therefore, the real mass change and the heat flow signal change of the alloy powder sample in the temperature programming process can be accurately measured.

The invention relates to the technical field of water treatment, and provides a reverse osmosis membrane cleaning method, a cleaning agent composition and application. According to the method, whether cleaning is needed or not is determined by comparing initial operation parameters and current operation parameters of a system; the pollutant type is accurately judged by observing the appearance characteristics of the membrane surface and detecting related index parameters; and selecting a corresponding cleaning agent formula according to the pollutant type, and sequentially performing physical washing and chemical cleaning. The cleaning agent composition comprises a biological pollution cleaning agent, an organic pollution cleaning agent and / or an inorganic scaling cleaning agent. By establishing a scientific pollution diagnosis system and a targeted cleaning strategy, the problems of fixed cleaning scheme and low pertinence in the prior art are solved, the pressure difference recovery rate after cleaning can reach 90% or above, the desalination rate recovery rate can reach 99% or above, the cleaning efficiency is remarkably improved, the operation cost is reduced, and the service life of the membrane is prolonged.

According to the efficient water treatment system based on the reverse osmosis membrane and the control method provided by the invention, gradient anti-pollution membrane arrangement and reconfigurable intelligent waterway design are creatively combined, so that a foundation is laid for high-flux and low-pollution operation from a physical structure; meanwhile, a full-closed-loop intelligent control system is constructed, and by fusing fuzzy logic, an optimization algorithm and a neural network prediction model, the system can integrate multi-dimensional information such as inlet water quality, membrane pressure difference and water yield, judge pollution risks in real time and adaptively and seamlessly switch among a high recovery mode, a segmented flushing mode and a prediction cleaning mode, so that the system is high in recovery efficiency and high in reliability. Meanwhile, parameters such as pump frequency and valves are dynamically optimized to find an optimal balance point of recovery rate and energy consumption; according to the invention, the recovery rate can be stably improved, the membrane pollution rate is greatly reduced, the chemical cleaning period and the service life of the membrane element are prolonged, and finally, the comprehensive operation and maintenance cost of the system is remarkably reduced while the water treatment efficiency and the water quality safety are improved.

The present application relates to the technical field of daily chemical cleaning products, and discloses a kind of wormwood leaf, enzyme laundry detergent, including the following components, by weight percentage: wormwood leaf enzyme: 30-50wt%, environmental protection enzyme: 10-20wt%, composite surfactant: 5-10wt%, including fatty alcohol polyoxyethylene ether sulfate and alkyl glycoside, wherein fatty alcohol polyoxyethylene ether sulfate accounts for 60-80wt% of the total amount of composite surfactant, and alkyl glycoside accounts for 20-40wt% of the total amount of composite surfactant; Dispersant: 0.3-1wt%; Enzyme-surfactant composite catalyst: 1-5wt%. The present invention adopts the technical scheme of combining wormwood leaf enzyme with environmental protection enzyme, extracts active enzyme and natural functional ingredients by fermentation, and realizes efficient decomposition of organic stains such as grease and protein. Compared with the scheme of using only chemical surfactant in the prior art, the problem of environmental pollution and skin irritation of chemical detergent is solved, and the safety and environmental protection of washing are significantly improved.

The invention relates to the technical field of non-ferrous metal wire drawing, in particular to a wire drawing device for copper wire machining. The wire drawing device comprises a base, a processing cavity is formed in the top of the base, a pair of wire winding mechanisms arranged at intervals is arranged on the inner bottom wall of the processing cavity, and a cleaning mechanism, a dirt removing mechanism and a wire drawing mechanism are sequentially arranged between the two wire winding mechanisms; according to the wiredrawing device for copper wire processing, the cleaning bin is used for removing an oxide layer on the surface of a thick copper wire, the heat dissipation interlayer can absorb heat generated in the wiredrawing process of the wiredrawing die, and the heat dissipation interlayer can convey heated cooling liquid into the dirt removal box; the decontaminating liquid in the decontaminating box is used for washing away the residual chemical cleaning agent on the surface of the thick copper wire after being heated, the decontaminating box can convey the cooled decontaminating liquid back to the heat dissipation interlayer so as to cool the wire drawing die, and the decontaminating liquid (namely hot water) retained on the surface of the thick copper wire can lubricate the thick copper wire when passing through the wire drawing die.

The utility model discloses a cleaning machine for dirt on the inner wall of a pipe fitting, and relates to the technical field of pipe fittings. Four cleaning brushes are arranged at one end of the peripheral face of the supporting pipe, two moving wheels are arranged at the other end of the peripheral face of the supporting pipe, the water pipe penetrates through one end of the supporting pipe in a clamped mode, a spraying pipe penetrates through the periphery of one end of the water pipe in a welded mode, and the elastic air bag is fixedly clamped to the center of the peripheral face of the supporting pipe. By arranging the supporting pipe, the water passing pipe and the elastic air bag, the problems that when a cleaning machine is used for cleaning the inner wall of a pipe fitting, complex pipelines are difficult to process in a mechanical cleaning mode, the cleaning cost is high through a large amount of chemical cleaning liquid, and the cleaning machine is usually large in size to guarantee use stability and cannot be used for cleaning the inner wall of the pipe fitting are solved. And the storage is inconvenient.

The invention provides an intelligent maintenance cleaning device for nanofiltration membrane pollution control and a method thereof, and solves the problems of low maintenance cleaning efficiency, poor adaptability of cleaning parameters and pollution conditions and frequent chemical cleaning of an existing nanofiltration system. Belongs to the technical field of membrane pollution control. According to the invention, the filtering system, the cleaning system and the intelligent decision-making module are integrally designed, so that the closed-loop control of the whole process of real-time monitoring, pollution identification, intelligent decision-making and automatic cleaning of the running state of the nanofiltration membrane is realized. The cleaning effect gating memory neural network model is used as a membrane pollution prediction model, membrane pollution can be accurately predicted, and key cleaning nodes can be identified. The optimal membrane cleaning parameters are generated by adopting a non-dominated sorting genetic algorithm, the usage amount of chemical agents and the cleaning cost are reduced, and the membrane pollution control effect is improved. The invention is applicable to the field of drinking water treatment.

The invention discloses a reinforced packaging process of an embedded storage chip, and relates to the field of chip packaging. The invention discloses a reinforcing and packaging process of an embedded storage chip. The reinforcing and packaging process comprises the following steps: S1, chip preprocessing; s2, applying a protective coating; s3, packaging layer processing; the chip pretreatment in the step S1 further comprises the following steps of plasma cleaning, ultraviolet irradiation and chemical cleaning, and the application of the protective coating in the step S2 further comprises the following steps of uniformly coating a layer of protective material after the pretreatment of the surface of the chip is completed to form a primary protective layer, and controlling the thickness of the protective coating to be 100-300nm; the surface of the chip is passivated, and a silicon nitride passivation layer is deposited on the surface of the chip by adopting a plasma enhanced chemical vapor deposition technology, so that the hardness and the corrosion resistance of the surface of the chip are enhanced, charge accumulation on the surface of the chip is reduced, and the chip is prevented from being damaged by electrostatic discharge.

The invention relates to the technical field of cleaning clamps, and discloses a semiconductor wafer chemical cleaning clamp which comprises a first plate used for placing and bearing a wafer, a second plate arranged on the first plate and convenient for a user to move the first plate and the wafer through the second plate, and a limiting assembly arranged on the first plate and used for limiting the position of the wafer on the first plate. And an adjusting unit is arranged in the limiting assembly. The position of wafers with different diameters can be limited through the limiting assembly, then the outer surfaces of the wafers are abutted through a guide wheel in the clamping assembly, so that the wafers are abutted among the guide wheel, a first cylinder and two second cylinders, the limited wafers can be clamped and fixed through the device, and the working efficiency is improved. And it is ensured that the wafer cannot fall off and be broken due to shaking during cleaning.

The invention discloses a self-cleaning device for a ballast water pipeline of a tropical scientific investigation ship, the self-cleaning device comprises the ballast water pipeline, a double-rod fixing device, rotation dampers, a screw rod and a rotary scraper, the screw rod is fixed and welded on the inner wall of the ballast water pipeline by the double-rod fixing device, the rotary scraper is fixed on the screw rod through thread engagement and limited by the rotation dampers on the two sides, and the rotary scraper is fixed on the ballast water pipeline. A silicon nitride ceramic shaft seal is arranged at the penetrating connector of the screw and the double-rod fixing device, the rotary scraper body is made of a metal alloy matrix, and the surface of the rotary scraper body is coated with an Al2O3-TiO2 coating. The invention further discloses a working principle of the self-cleaning device for the ballast water pipeline of the tropical scientific investigation ship. Aiming at the special requirements of the operation area of the tropical scientific investigation ship, the rotary scraper is driven by the kinetic energy of ballast water flow, a quickly growing biological membrane is efficiently removed through the centrifugal stripping and shearing stripping effects of the fluid, pollution of chemical cleaning to sensitive ecology such as coral reefs is avoided, and the pipeline blockage risk and the maintenance cost are reduced.

The invention relates to a process for preparing regenerated polyester from a waste polyester material, and belongs to the technical field of waste polyester reutilization. According to the method, impurity residues in the waste polyester material are effectively reduced through two-stage chemical cleaning, and the purity of polyester fragments is improved. The polyester fragments and ethylene glycol are rapidly depolymerized through microwave heating under the action of a tetrabutyl titanate catalyst, so that the reaction efficiency and the product controllability are remarkably improved. And in the polycondensation stage, the epoxy chain extender and the modified nano silicon dioxide are added, so that the molecular structure of the regenerated polyester is further enhanced, and the mechanical property and the thermal stability of the regenerated polyester are improved. In addition, the addition of the antistatic agent prepared by taking the polyurethane coated carbon nanotube as a core and grafting a polyester compatible monomer on the outer layer effectively improves the electrical performance of the regenerated polyester, and enhances the application stability of the fiber.

The invention discloses an MBR membrane separation system applied to sewage treatment, and relates to the technical field of sewage treatment. The system comprises a bioreactor which is provided with an anaerobic zone, an anoxic zone and an aerobic zone; the MBR membrane assembly comprises membrane frames, membrane modules arranged in the membrane frames, and a membrane protection net arranged at the outermost part of the MBR membrane assembly; the aeration assembly comprises an aeration head, an air blower connected with the aeration head through a pipeline, and a dissolved oxygen sensor mounted in the aerobic zone; the cleaning assembly comprises a backwashing pump and a medicine storage tank; the pretreatment assembly comprises a grid, a grit chamber positioned behind the grid, a primary sedimentation tank positioned behind the grit chamber, and a flocculant feeder mounted at an inlet of the primary sedimentation tank. According to the invention, the MBR membrane component is arranged, the effluent quality is ensured, the cleaning component realizes regular physical and chemical cleaning of the MBR membrane component, the membrane flux is effectively recovered, the service life of the membrane is prolonged, and the operation cost is reduced.

The invention discloses a neutral organic chelating cleaning agent for a boiler, and belongs to the field of chemical cleaning of boiler superheaters of thermal power plants. The cleaning agent is prepared from the following components in percentage by weight: 0.5%-5% of ethylenediamine tetraacetic acid ammonium, 0.1%-4% of acetic acid or ammonium acetate, 0.1%-3% of glycollic acid ammonium or glycollic acid, 0.1%-5% of a pH regulator, 0.1%-1% of a cosolvent, 0.2%-0.8% of a corrosion inhibitor SH369, 0.1%-0.6% of a reducing agent, 0.0%-0.3% of a defoaming agent, 0.0%-0.2% of a surfactant and 84%-93% of water, wherein the pH value of the cleaning agent is 6-8; the cosolvent is tartaric acid and / or hydroxybutyl diacid, the surfactant is nonylphenol polyoxyethylene ether, and the reducing agent is hydrazine. The cleaning agent disclosed by the invention has good dissolving capacity on oxide skin, does not generate precipitates to cause pipe blockage, is a neutral solution, is very small in corrosivity, does not generate intergranular corrosion, is beneficial to protecting various pipes of superheaters and reheaters, and is a safe and efficient superheater cleaning agent.

The invention provides a method and a system for inhibiting an aluminum magnesium alloy laser deep penetration welding pore defect, and relates to the technical field of aluminum magnesium alloy laser welding, and the method comprises the following steps: S1, polishing the surface of an aluminum magnesium alloy welding plate, and carrying out chemical cleaning decontamination; s2, the aluminum-magnesium alloy welding plate is fixed through a welding tool, and the aluminum-magnesium alloy welding plate is restrained through a high-temperature clamp; s3, the aluminum-magnesium alloy welding plate is welded through double-light-spot laser, the front light spot is pretreated, and the rear light spot is subjected to deep penetration welding; s4, the scanning interval and the scanning width of the laser beams are adjusted and set through galvanometer parameters; and S5, the preset laser power, the preset welding speed and the preset shielding gas flow are adopted for completing laser welding. According to the method, high-quality welding of the medium-thickness plate aluminum alloy can be achieved.

The utility model discloses a reverse osmosis membrane chemical cleaning wastewater defoaming device, which belongs to the technical field of sewage treatment, and comprises a mounting plate, the upper surface of the mounting plate is fixedly connected with a sewage pool, the upper surface of the sewage pool is fixedly connected with a fixed plate, the lower surface of the fixed plate is fixedly connected with a protective shell, and the protective shell is fixedly connected with a water tank. The reverse osmosis membrane chemical cleaning wastewater defoaming device comprises a fixed plate, a protective shell is arranged in the fixed plate, a pressure sensor is arranged in the protective shell, a movable groove is formed in the lower surface of the protective shell, a limiting rod is fixedly connected to the lower surface of the fixed plate, and a sliding sleeve is connected to the surface of the limiting rod in a sleeving mode. When a worker uses the device to eliminate foam, under the cooperation of a pressure sensor, a floating plate and an impact block, the liquid level in the sewage pool can be monitored in real time, so that the foam in the sewage pool can be eliminated in time.

The utility model discloses a domestic sewer line, and belongs to the field of sewer lines. The domestic sewer line comprises a sewer line and a cut-off piece, the cut-off piece comprises a cut-off valve or a plug block, one end of the sewer line is used for being connected with a pool, and the cut-off piece is installed at the end, close to a public pipeline, of the sewer line and used for cutting off the end, close to the public pipeline, of the sewer line. The end, close to the public pipeline, of the sewer pipeline can be cut off through the cut-off piece, then the chemical cleaning agent is used, the retention time of the chemical cleaning agent in the sewer pipeline is prolonged, and the problem that in the prior art, the cleaning agent cannot make full contact with grease, and consequently the cleaning effect is limited is solved.

The utility model relates to the technical field of chemical production, particularly discloses a turbidity control system for chemical cooling circulating water, and solves the problem that the cooling effect of chemical equipment is finally influenced due to the fact that the circulating water is easily polluted by a chemical cleaning agent or the environment in the process of cooling the chemical equipment by the circulating water for a long time at present. According to the system, a plurality of cut-off control valves are arranged at water inlet and outlet pipelines of a filter, a liquid level meter is additionally arranged at the top of a slurry tank, and a plurality of control valves are arranged between the slurry tank and a press filter, so that circulating water is further filtered through the additional filter when being subjected to conventional cooling heat exchange circulation; the cleanliness of the cooling water entering the circulating water tank is further improved; and the slag slurry water backwashed by the filter is further filtered by the press filter, so that the filtered slag slurry water is pumped into the circulating water tank again, the turbidity of the cooling circulating water is effectively reduced, and the recycling rate of the filtered slag slurry water is improved.

The present invention provides a brazed plate heat exchanger, which includes a fixing frame, and a heat exchange main body is fixed inside the fixing frame; a water treatment assembly, and a water treatment assembly that can slide vertically is sleeved outside the heat exchange main body. The water treatment assembly includes an installation frame, and a multi-layer magnetic treatment part is arranged on the inner wall of the installation frame; the magnetic treatment part includes a plurality of magnetic force blocks evenly distributed inside the installation frame; a plurality of mixing blocks with magnetism, and the mixing blocks are arranged on the heat exchange plates. The technical solution in this application realizes the combination of the physical action of the magnetic mixing blocks and the chemical effect of magnetization treatment, effectively reduces the formation and deposition of scale, the movement of the magnetic balls increases the turbulence intensity, reduces the fluid boundary layer thickness, improves the heat exchange efficiency, reduces the problems of blockage and corrosion caused by scale, reduces the cleaning frequency, extends the equipment operation cycle, reduces or avoids the use of chemical cleaning agents, and reduces the maintenance cost and environmental impact.

The invention discloses a chemical cleaning reagent for aluminum oxide ceramic parts and a cleaning method. The chemical cleaning reagent comprises organic acid, a surfactant, a chelating agent, an oxidizing agent and deionized water. Aiming at the special pollution problem (such as trace metal ions, nano-scale particles and organic matters) of the aluminum oxide ceramic part in the 14-nm manufacturing process, the chemical cleaning reagent formula is optimized, pollutants on the surface of the ceramic part can be efficiently removed, and the cleanliness requirement of the 14-nm manufacturing process is met. The cleaning method comprises the steps of pretreatment, chemical cleaning, rinsing and drying, has the advantages of environmental protection, safety and no damage to the ceramic surface, and is suitable for the field of semiconductor manufacturing.

The invention creatively discloses a high-strength short fiber production process based on silkworm cocoon shells, relates to the technical field of short fiber production processes, and solves the technical problems that an existing technical scheme is easy to shrink and poor in compatibility with other fibers, and the high-strength short fiber production process comprises the following steps: step 1, cocoon shell pretreatment: putting tussah cocoons into a husking machine for shell and cocoon separation, the separated cocoon shells are flattened by the aerostatic press and then input into the slicing machine to be cut into cocoon slices with the length of 2-3.5 cm. According to the cocoon shell separating and cutting device, through combined use of the husking machine, the aerostatic press, the slicing machine and other equipment, rapid separation and accurate cutting of the cocoon shells are achieved, and the problems of low efficiency and impurity residues of traditional manual treatment are solved; a cleaning mode of combining warm water soaking and mechanical stirring is adopted, and 0.1-0.3% of biological enzyme is added, so that the cleaning effect is further improved, the use of a chemical cleaning agent is avoided, the environmental pollution is reduced, and the green and environment-friendly concept is met.

The invention relates to the technical field of semiconductor copper interconnection, in particular to a hole filling method of a copper interconnection semiconductor cooler, which comprises the following steps of: performing multi-stage chemical cleaning treatment on a semiconductor substrate after laser drilling, removing dirt on the surface of the substrate, coarsening the surface of the substrate to increase binding force and removing residual slag at a hole after drilling; the influence on seed layer sputtering in subsequent holes caused by slag accumulation at the hole opening is avoided; and meanwhile, three-step electroplating of the initial copper layer, through hole filling and orifice and surface leveling are adopted, so that cavity-free hole filling and surface nanoscale leveling are realized, and the final product yield is improved.