72results about How to "Dosage control" patented technology

The invention relates to the technical field of synthetic fibers, in particular to a high-elasticity textile fiber and a preparation process thereof. The high-elasticity textile fiber is prepared from the polyurethane-polyamide elastomer and the modified diatomite master batch through melt spinning, drafting and winding. According to the invention, hydroxyl-terminated polydimethylsiloxane is used as polyol, and the molar ratio of the polyurethane prepolymer to the polyamide prepolymer is controlled, so that the prepared polyamide-polyurethane elastomer slice has good heat resistance; the molar ratio of isocyanate to polyol and the molar mass ratio of caprolactam to adipic acid are controlled, so that the prepared textile fiber is excellent in mechanical property; 2, 2-dimethylolpropionic acid is used for a chain extension reaction, the molar ratio is controlled, the moisture regain of the prepared textile fiber is 8.58%, and the moisture absorption is high; the diatomite is modified by the quaternary ammonium salt compound, and the addition proportion is adjusted, so that the prepared spinning fiber has good antibacterial performance.

The invention relates to ultrahigh-strength ultrahigh-toughness concrete and a preparation method thereof, and the process of the preparation method is as follows: designing the mix proportion of concrete slurry based on a close packing theory, and selecting a slurry formula with the fluidity of not less than 180mm and the initial strength of not less than 60MPa as a reference mix proportion; steel fibers are selected as end hook type steel fibers, a wood plate or a steel plate is used for formwork supporting according to the size requirement of the test piece, then a steel fiber cage is laid with the end hook type steel fibers within the supporting range, and the steel fibers are staggered with one another to form a macroscopic steel fiber space framework within the supporting range; preparing slurry according to a standard mixing ratio, then infiltrating the slurry into the built steel fiber space framework, and vibrating after the steel fiber space framework is completely infiltrated with the slurry; and then curing and form removal are performed to obtain the ultrahigh-strength ultrahigh-toughness concrete. The problem of agglomeration effect caused by too high fiber mixing amount is solved, and the unified requirements on the strength and toughness of concrete materials in engineering are met.

The utility model discloses a water treatment equipment water inlet dosing device which comprises a fixed pipe, two ends of the fixed pipe are connected with water inlet pipes, the top of the fixed pipe is fixedly connected with a dosing pipe, the top of the dosing pipe is fixedly connected with a medicine storage box, and a first support and a second support are sequentially and fixedly connected in the dosing pipe from top to bottom. The center of the first support and the center of the second support are vertically and slidably connected with a sliding rod, the top end of the sliding rod is fixedly connected with a sealing plug, the surface of the sliding rod is in threaded connection with a fixing ring and a locking nut, a spring is arranged between the top of the fixing ring and the bottom of the first support, a baffle is arranged in the fixing pipe, and fixing shafts are arranged on the two sides of the baffle. According to the chemical feeding device for the water inlet of the water treatment equipment, the chemical feeding amount can be adjusted according to the water flow, the feeding opening can be closed when no water exists, and chemical liquid is saved.

The utility model provides a pesticide mixing device for tobacco pesticide application, which comprises a soil collecting unit, a capsule putting unit, a stirring unit and a soil transferring unit, after soil is guided into the soil collecting unit, the capsule putting unit quantitatively puts pesticide application capsules into the soil collecting unit one by one; then, the stirring unit stirs and crushes the guided soil and the thrown capsules together, and the crushed soil is received and transferred by the soil transferring unit, so that the pesticide mixing work of the soil and the pesticide application capsules is completed.

The invention relates to the technical field of robot control, in particular to a pipeline detecting and cleaning robot and a control system. The method comprises the steps of firstly obtaining a gray image in a pipeline, and performing region division; and the image segmentation technology is utilized to accurately identify dirty areas in each area image, and the standard spraying speed of the cleaning agent is adjusted based on the area and the number of the dirty areas so as to realize accurate matching with the dirty areas. Meanwhile, the dirt degree is quantized by analyzing the gray values of the pixel points in the gray image, and then the unit area retention time of the cleaning robot in each dirt area is determined. And finally, in combination with the spraying speed and the retention time of the cleaning agent, the pipeline detection cleaning robot is used for cleaning the pipeline. According to the method, by precisely adjusting the spraying speed of the cleaning agent and the staying time of the robot, precise dosage control and differentiated cleaning strategies of the cleaning agent are achieved, and the cleaning effect is effectively improved.

The invention relates to the technical field of fiber fabrics, in particular to a negative ion antibacterial polyester fiber fabric and a preparation method thereof. The problems that a polyester fiber fabric is low in mechanical strength and poor in lasting antibacterial performance are solved. Synthetic raw materials of the anion antibacterial polyester fiber fabric comprise composite anion powder, a composite antibacterial agent, an improved dispersing agent, a coupling agent mixture, terephthalic acid, ethylene glycol and a catalytic promoter. Negative ions of the fabric can be continuously released by controlling the proportion and the particle size of the components in the composite negative ion powder; the continuous antibacterial ability of the fabric is improved by changing the dosage of the composite negative ion powder and the composite antibacterial agent; the bursting strength of the fabric is improved by preparing the mixture of the improved dispersing agent and the coupling agent; the wear resistance of the fabric is improved by controlling the parameter conditions of synthesizing the ethylene glycol terephthalate and the time and temperature of polycondensation; the elongation at break of the fabric is improved by controlling parameter conditions in the spinning process.

The invention discloses a cleaning composition, a related cleaning product and application of the composition in the aspects of reducing skin irritation or eye irritation, controlling oil, removing odor and the like, N-long-chain acyl amino acid and basic amino acid / inorganic base are used as main surface active agents, a thickening agent, ethoxylate, fatty acid salt and a humectant can be not contained, and the cleaning composition is mild and free of irritation; the compound can be used for shower gel, shampoo, cleansing mousse, cleansing products, oral washing products, shaving products, hand sanitizer, cleaning lotion or multifunctional cleaning products.

The invention relates to the technical field of antioxidants, and particularly discloses an antioxidant tetra (2, 4-di-tert-butylphenol)-4, 4 '-biphenyl diphosphite and a preparation method thereof. According to the preparation method of the antioxidant tetra (2, 4-di-tert-butylphenol)-4, 4 '-biphenyl diphosphite, a catalyst comprises AlCl3 and NaCl in a molar ratio of (1.4-2.0): 1, the yield of a prepared intermediate product is not lower than 80%, the yield of a final product is not lower than 96.5%, and the purity of the final product is not lower than 98%. The product provided by the invention can effectively prolong the service life of a high polymer material and maintain the original performance of the material, and has good thermal stability and hydrolysis-resistant stability; in addition, the yield of the antioxidant tetra (2, 4-di-tert-butyl phenol)-4, 4 '-biphenyl diphosphite finally prepared by the preparation method is not lower than 96.5%, and the purity is not lower than 98.5%.

The utility model relates to the technical field of vertical coating machines, and discloses a distance-adjustable coating head for a vertical coating machine, which comprises a base, the front end of the base is fixedly connected with a motor I, the driving end of the motor I is connected with a connecting plate through a lifting component so as to drive coating rollers on two sides to adjust the distance, and the connecting plate is connected with a motor II through a lifting component. The inner ends of the connecting plates are rotationally connected with rotating cylinders, the inner walls of the rotating cylinders are slidably connected with pulling plates, the bottom ends of the pulling plates are connected with coating rollers through buckle assemblies so as to be used for disassembling and assembling the coating rollers, the inner wall of the connecting plate on the front side is fixedly connected with a second motor, and the driving end of the second motor is fixedly connected to the front end of the rotating cylinder on the front side. According to the utility model, the coating rollers on the two sides are driven to lift, so that the distance between the coating rollers on the two sides is convenient to adjust, the use amount of paint and the thickness of a coating are effectively controlled, the thickness of the coating is ensured to accord with the accurate specification of a product, and the performance, the stability and the quality of the product are improved.

The utility model provides a kind of electroplating wastewater hexavalent chromium reduction automatic dosing control device, including pH adjusting pool, reduction reaction pool, sampling pump, video recognition system, control assembly, dosing pump and dosing tank;Reduction reaction pool is connected after pH adjusting pool;Sampling pump is connected with reduction reaction pool by sampling pipeline, and video recognition system is connected after sampling pump, and video recognition system is reconnected to reduction reaction pool by reflux pipeline after video recognition system;Video recognition system is connected with control assembly, and control assembly is connected with dosing device, so that control assembly controls dosing device according to video recognition system signal.The utility model uses video recognition system to replace ORP controller, without accurate control wastewater pH value.

The invention relates to a biological tank effluent total phosphorus evaluation method which comprises the following steps: collecting an inflow water sample of a biological tank, water samples in different stages in the biological tank and an effluent water sample of the biological tank, and pretreating the water samples in different stages in the biological tank to obtain a sludge sample; respectively acquiring total phosphorus data in an inlet water sample and an outlet water sample and microflora composition data in the sludge sample in each stage; processing and analyzing the microflora composition data to obtain data of three bacteria in the sludge sample; establishing an evaluation system among the three types of bacteria, the total phosphorus content of the inlet water and the total phosphorus content of the outlet water according to the data of the three types of bacteria, the total phosphorus content of the inlet water and the total phosphorus content of the outlet water; acquiring data of three bacterial genus in a sludge sample corresponding to a to-be-evaluated effluent water sample and data of total phosphorus in inflow water, and evaluating the total phosphorus of the effluent water sample by using the evaluation system. The evaluation method can quickly evaluate the phosphorus removal effect of the biological tank and the total phosphorus in the effluent.

The utility model relates to the technical field of spring roll production, in particular to an automatic spring roll wrapping device which comprises a machine table, a guide frame is fixedly installed at the rear end of the top of the machine table, a conveying frame is fixedly installed at the front end of the top of the machine table, and a wrapper pressing mechanism is installed on the top of the machine table and located between the guide frame and the conveying frame. A wrapping assembly is installed on the front face of the machine table, a quantitative stuffing discharging assembly is installed on the front face of the machine table and located above the wrapping assembly, and a discharging frame is fixedly installed at the bottom end of the front face of the machine table; the quantitative stuffing discharging assembly comprises a supporting frame fixedly installed on the wrapping assembly, a material storage barrel is fixedly installed at the top end of the supporting frame, a connector is in threaded connection with the bottom end of the supporting frame, a movable frame is fixedly installed at the bottom end of the connector, and a material receiving plate is slidably connected into the movable frame; according to the utility model, the use amount of stuffing can be uniformly controlled through the design, waste is avoided, the production cost is reduced, and the production quality is improved.

The invention provides a 3D printing recycled mortar mix proportion design method based on recycled fine aggregate water absorption, which comprises the following steps: firstly, determining the content of hardened set cement of recycled fine aggregate based on a method of dissolving waste concrete recycled fine aggregate by salicylic acid and methanol, and calculating the proportion of the recycled fine aggregate through a linear regression equation of the content of the hardened set cement with different particle sizes and the water absorption; compared with the national standard GB / T 14684-2022, the method provided by the invention has the advantage that the water absorption rate of the recycled fine aggregate with a fine particle size is more accurate. Furthermore, the water absorption rate of the recycled fine aggregate with relatively small particle size, which is obtained by the method, provides important parameters for the design of the 3D printing recycled fine aggregate mortar / concrete mix proportion based on the recycled fine aggregate, controls the use amount of the water reducing agent, ensures the excellent fluidity of the recycled fine aggregate mortar / concrete, and has important significance on the preparation of the 3D printing recycled fine aggregate mortar / concrete; and meanwhile, the resource utilization rate of the recycled fine aggregate is favorably improved.

The utility model discloses environment-friendly water-free direct-injection wood pulp cotton which comprises a containing box, a pressing sleeve is connected to the outer side of the containing box in a sleeved mode, a wood pulp cotton body is installed in the containing box, a sliding groove is formed in the outer side wall of the containing box, and the pressing sleeve is connected to the interior of the sliding groove in a sliding mode. The first springs are fixedly installed at the inner bottoms of the sliding grooves, the lower ends of the left end and the right end of the pressing sleeve are slidably connected with limiting rods, one ends of the limiting rods penetrate and extend to the inner side wall of the containing box, and the outer sides of the limiting rods are connected with second springs in a sleeving mode. According to the environment-friendly water-free direct-injection wood pulp cotton, the wood pulp cotton has good water absorption, so that water is prevented from being injected and flowing, meanwhile, mould breeding can be effectively prevented, the cleaning efficiency is improved, cleanliness and sanitation are kept, then the wood pulp cotton can be effectively protected against external pollution, damage and pollution, and the environment-friendly water-free direct-injection wood pulp cotton is worthy of popularization and application. Meanwhile, the risks of pollution and bacterial infection are reduced, and then the overall attractiveness and usability are improved.

The cutting fluid filling device comprises a storage box, a supporting pipe is installed on the outer side of the storage box, one end of the supporting pipe is connected to the bottom of a falling opening, the other end of the supporting pipe is located on the top of the storage box and connected with a conveying hose, and one end of the conveying hose is connected with a storage box. The storage box moves to the cutting equipment from the top of the storage box, a driving motor drives a connected screw rod to rotate at the top of a transverse supporting plate, the screw rod rotates to enable an extrusion plate in threaded connection with the outer side to move downwards in the storage box, and meanwhile the extrusion plate drives a sealing strip bonded to the bottom to move downwards and extrudes cutting liquid in the storage box; the extruded cutting liquid is discharged into the supporting pipe from the falling opening formed in the bottom of the conical falling groove and then is discharged into the conveying hose connected with the other end of the supporting pipe, and finally the cutting liquid is injected into the cutting equipment from the storage box, so that instability caused by manual cutting liquid adding is avoided, and the using amount of the cutting liquid is better controlled.

This utility model relates to the field of aluminum honeycomb panel technology and discloses a deformation-resistant support structure for lightweight aluminum honeycomb panels, including an upper aluminum plate and a lower aluminum plate. Both the upper and lower aluminum plates have slots, and clamping plates are fixed to the side walls of both plates. An upper cavity is formed in the upper aluminum plate, and a lower cavity is formed in the lower aluminum plate. A transverse support strip is installed in the lower cavity, and a longitudinal support strip is installed in the upper cavity. An upper placement groove is formed in the upper aluminum plate, and a lower placement groove is formed in the lower aluminum plate. An aluminum honeycomb core panel is clamped into the upper and lower placement grooves. This utility model eliminates the need to increase core density to improve strength, effectively controlling material usage and avoiding the weight and cost increases caused by core densification. Furthermore, it eliminates the need to increase aluminum plate thickness to enhance splicing strength, avoiding damage to the aluminum plate structure from openings and preventing weight increases caused by thickening the aluminum plate or adding fasteners.

The invention discloses a rotating device applied to a coating working machine of a coating line, which comprises a coating robot arranged in a totally-closed coating production line and used for driving a spray gun to move; the rotary jig frame body mechanism is used for fixing the to-be-coated automobile parts and is matched with the coating robot to rotate; the spray gun is installed on a mechanical arm of the coating robot and used for executing automatic spraying operation of the automobile parts. According to the method, the quality defects such as coating falling and chromatic aberration are avoided, the product quality stability is guaranteed, the production period is greatly shortened, the human input and the labor intensity are reduced, the production efficiency is improved, waste and the product rejection rate are reduced, and the production cost is reduced.

The elevator operation box wall comprises a car wall plate provided with an operation box, and further comprises a disinfection mechanism and a driving device which is arranged on the inner wall face of the car wall plate and used for driving the disinfection mechanism to move on the outer wall of the operation box in a reciprocating mode, and the car wall plate comprises an operation box installation wall part and a side wall part connected with the operation box installation wall part. The side wall part outwards protrudes out of the outer wall surface of the operation box mounting wall part and is provided with an avoiding groove for avoiding the driving device; a sealing plate is arranged at the end, away from the driving device, of the disinfection mechanism, the shape of the sealing plate is matched with that of the receding groove, and the sealing plate is embedded into the receding groove when the driving device is in a retracted state. The utility model can satisfy the sterilization and disinfection function, is not easy to damage, and meets the requirement of beauty.

The present invention relates to a temperature control method suitable for a large-scale precooling concrete mixing plant, and the steps are: measuring the ambient temperature at the location of the mixing plant; measuring the surface temperature of coarse aggregate and fine aggregate when they are stored in a storage shed and the temperature of cementitious materials in a storage tank; measuring the surface temperature of coarse aggregate, fine aggregate and cementitious materials when they are transported to the mixing plant and before they are put into use; establishing a calculation model for the relationship between the temperature change value of coarse aggregate, fine aggregate and cementitious materials from storage to before they are put into use and the ambient temperature, and obtaining the temperature characteristic parameters of coarse aggregate, fine aggregate and cementitious materials as the ambient temperature changes; determining the speed of the conveyor conveying coarse aggregate, the air outlet temperature of the air cooler, the cold water temperature and the amount of flake ice used under different ambient temperatures. The present invention can optimize the air outlet temperature, cold water temperature and the amount of flake ice used of the precooling equipment of the mixing plant production system under the premise of meeting the precooling concrete outlet temperature requirement (16°C), so as to achieve optimal resource allocation.

The invention discloses an oral medicament for lumbar disc herniation and a preparation method thereof, and relates to the technical field of traditional Chinese medicines. The traditional Chinese medicine composition is prepared from the following materials in parts by mass: 4 to 8 parts of black prepared aconite root, 10 to 20 parts of poria cocos, 5 to 15 parts of rhizoma atractylodis macrocephalae, 10 to 14 parts of radix paeoniae alba, 4 to 8 parts of fresh ginger, 10 to 20 parts of cortex eucommiae, 10 to 14 parts of radix dipsaci, 10 to 20 parts of herba taxilli, 10 to 14 parts of rhizoma cibotii, 4 to 8 parts of ground beeltle, 1 to 5 parts of radix notoginseng and 30 to 55 parts of honey. According to the oral medicament for lumbar disc herniation and the pills prepared by the preparation method, the uncomfortable symptoms such as waist pain, lower limb radiation pain and numbness of a patient with lumbar disc herniation can be effectively relieved, and the life quality of the patient is improved.

The invention discloses a modified fly ash ceramsite proppant and a preparation method thereof, and a combined proppant and a preparation method and application thereof, and relates to the technical field of shale oil and gas fracturing. The modified fly ash ceramsite proppant comprises the following components which are mixed and granulated: fly ash, bauxite, barite powder, a recycled molecular sieve, a recycled mesoporous material, optional calcite powder and optional bentonite. The environment-friendly propping agent disclosed by the invention solves the problems of high production cost and application cost of the fracturing propping agent taking aluminum-containing minerals as main raw materials, and takes the harmless treatment of recyclable resources and industrial wastes in the whole industrial chain of the petrochemical industry into consideration, and the industrial wastes of the downstream of the oil refining and chemical industry are applied to the upstream petroleum fracturing propping agent.

The present invention belongs to the technical field of conductive pastes, and provides a TOPCon front SP silver paste and a preparation method thereof, wherein the TOPCon front SP silver paste comprises, by weight, 80-89wt% silver powder, 1-10wt% micron-grade physical borated high silver powder, 7-12wt% organic carrier, 0.1-2wt% amorphous boron powder and 1.5-3.5wt% glass powder, wherein the glass powder comprises, by weight, a main oxide and a functional oxide, wherein the main oxide comprises 5-30wt% germanium dioxide, 0.5-20wt% aluminum oxide, 0.5-80 wt% bismuth oxide and 0.5-30wt% tellurium dioxide, the functional oxide includes 0-20wt% silicon oxide, 0-35wt% boron oxide, 0-10wt% gallium oxide, 0-20wt% lithium oxide or lithium carbonate, 0-20wt% barium oxide or barium carbonate, 0-20wt% calcium oxide, 0-20wt% zinc oxide, 0-20wt% titanium dioxide, 0-20wt% tungsten trioxide, 0-10wt% copper oxide, 0-10wt% manganese dioxide and 0-10wt% ferrous oxide, and the mass fraction of the functional oxide is not 0 at the same time. The SP silver paste provided by the present invention can adapt to the current LECO process basis, reduce four printings to three printings, have a better component string soldering window, and the conversion efficiency is increased by more than 0.05% year-on-year.

The utility model discloses a seed cultivating and fertilizing device which comprises a device body, a loading cavity arranged on the upper side of the device body and used for loading seeds and fertilizers, and a grab handle arranged on the outer portion of the upper right side of the device body, and a cavity is arranged on the inner side of the middle of the device body. A sharp shovel is arranged at the left lower side position of the device main body, an opening and closing plate is arranged at the right side position of the sharp shovel, and a rotating shaft is arranged at the connecting position of the opening and closing plate and the sharp shovel. The mechanical seeding and fertilizing mode can ensure that fertilizer and seeds are uniformly mixed and accurately put into soil, growth and development of crops are facilitated, and by adopting the mechanical seeding and fertilizing mode, an operator only needs to hold the operating device without a large amount of physical labor, so that the labor intensity is reduced, and the labor pressure of the operator is reduced.

The utility model discloses a cutting device in the field of cutting. The cutting device comprises a laser, an optical box, an electromechanical module, at least one drag chain and at least one sliding rail. The laser is used for emitting laser, and the optical box is used for receiving the laser emitted by the laser and then outputting laser for cutting; the electromechanical module is fixedly connected with the optical box, and the bottom surface of the electromechanical module is slidably connected with the sliding rail; the movable end of the drag chain is fixedly connected with the electromechanical module, and the electromechanical module drives the optical box to slide on the sliding rail. The laser cutting is adopted to replace knife cutting, so that the safety of the cutting process and the stability of the cutting effect are improved.

The utility model belongs to the technical field of water resource treatment equipment, and particularly relates to an efficient filtering device for water resource regeneration, which solves the problems of lower filtering efficiency and inconvenience in observation, and comprises a filtering box and an observation component, the top of the filtering box is fixedly connected with a mounting seat through a screw, and a motor is mounted at the top of the mounting seat; the output end of the motor is fixedly connected with a stirring shaft which is coaxially arranged through a coupler, the peripheral surface of the stirring shaft is fixedly sleeved with stirring blades, the peripheral surface of the stirring shaft is fixedly sleeved with a disc, and the stirring shaft rotates to drive the disc and a positioning shaft to rotate through arrangement of structures such as a threaded shaft and a moving block; the connecting rod drives the straight handle to do reciprocating linear movement, drives the gear to rotate forwards and backwards and drives the threaded shaft to rotate forwards and backwards simultaneously, so that the moving block repeatedly moves up and down, the cleaning plate vertically cleans the filter screen, the filter screen is prevented from being blocked, and the manual cleaning frequency is reduced.

The invention provides a hydrophobic film, a film coating liquid for the hydrophobic film, a preparation method and application of the hydrophobic film. The hydrophobic membrane comprises a bottom layer, a middle layer and a surface layer, the bottom layer is prepared from the following raw material components in parts by weight: 15 to 35 parts of high molecular weight polyethylene with weight-average molecular weight, 20 to 40 parts of modified nano ferroferric oxide and 20 to 30 parts of beewax, and the modified nano ferroferric oxide is micron silicon dioxide coated nano ferroferric oxide; the middle layer is prepared from the following raw material components in parts by weight: 5 to 10 parts of polydimethylsiloxane, 5 to 15 parts of nano silicon dioxide and 1 to 5 parts of silane; the surface layer is prepared from the following raw material components in parts by weight: 5 to 10 parts of tert-butyl isocyanate and 0.3 to 0.5 part of wood pulp cellulose. The hydrophobic film can be used for a yoghourt packaging material, has a good yoghourt-sticking-free effect and has recycling conditions.

This invention provides a split-type cold screen for an infrared detector and its assembly method. The split-type cold screen for the infrared detector includes a cold screen body and matte fins. The assembly method includes: applying a black coating to both the cold screen body and the matte fins, pre-baking them, then initially assembling the pre-baked cold screen body and the matte fins, and finally baking the pre-assembled cold screen to complete the assembly. This invention places the cold screen assembly step after pre-baking and before baking, using the bonding force of the black coating to connect the cold screen body and the matte fins. This eliminates the adhesive bonding step in the split-type cold screen assembly process, solving the problem of using adhesives to bond the cold screen body and matte fins in the split-type cold screen assembly process. This ensures good mechanical reliability of the cold screen assembly in low-temperature vibration environments and also improves the performance of the detector components and the efficiency of the cold screen assembly process.

The utility model discloses drilling rod cleaning wastewater treatment equipment, which relates to the technical field of wastewater treatment and comprises a bottom plate, a plurality of upright posts are fixedly connected to the outer wall of the top of the bottom plate, a wastewater tank is fixedly connected to the outer walls of the tops of the upright posts, and a magnetic seed pipe is fixedly connected to the inner wall of the wastewater tank. The hydrocyclone and the filter plate are connected in series, the magnetic separator is started while wastewater is conveyed, then the magnetic separator adsorbs and removes solid-phase particles through magnetic force when the wastewater passes through the magnetic separator, the removal rate can reach more than 95%, meanwhile, the solid-phase particles can stay in the collection box, and the solid-phase particles cannot be separated from the collection box. Then, the wastewater with solid-phase particles removed is continuously discharged into the serial hydrocyclone, and then the oil-water-solid three-phase separation of the wastewater is realized by the serial hydrocyclone, so that the filtering effect is improved, the oil and the solid particles in the wastewater can be effectively separated, the wastewater is prevented from containing a large amount of oil and solid particles, and the wastewater reaches the recycling standard.

The invention discloses a lubricating structure of a high-pressure die-casting punch, which comprises an injection rod and a punch mounted at the end of the injection rod, and is characterized in that the injection rod is internally provided with a first lubricating channel, the punch is internally provided with a second lubricating channel, and the first lubricating channel is communicated with the second lubricating channel; a lubricating oil inlet communicated with the first lubricating channel is formed in the injection rod, and a lubricating oil outlet communicated with the second lubricating channel is formed in the side wall of the punch. The punching device has the advantages that the structure is simple, lubricating oil enters the injection rod from the lubricating oil inlet, enters the second lubricating channel arranged in the punch head along the first lubricating channel arranged in the injection rod, and flows out to the outer surface of the punch head through the lubricating oil outlet arranged at the side part of the punch head; the structure can effectively control the use amount of lubricating oil according to the specific lubricating condition, and waste is avoided.

The utility model discloses a stirring device for producing a PEM fuel cell catalyst, which comprises a stirring box, a group of feed ports are formed in the upper surface of the stirring box, a group of charging mechanisms are mounted on the upper surface of the stirring box, and a stirring mechanism is mounted in the stirring box; various raw materials for producing catalysts can be mixed in the stirring box through the stirring box, different materials can be added through the feeding mechanism, the use amount of each material can be conveniently controlled, and the raw materials can be conveniently stirred through the stirring mechanism. A magnetic force generator can generate magnetic force, a sleeve and a stirring rod can rotate through cooperation of a magnetic force driving ring and a vertical rod, so that added materials are fully stirred, the sealing effect is good in the using process, the production quality of a fuel cell catalyst is guaranteed, the temperature in the stirring box can be regulated and controlled through an arranged electric heating rod, and the stirring efficiency is improved. And the production requirements are further met.