41results about How to "Speed up replacement" patented technology

The invention discloses a method for preparing polyurethane resin for high-wearing-resistance working gloves. The method comprises the following steps: (I) performing a pre-polymerization reaction on poly dihydric alcohol and isocyanate at a mole ratio of (0.5-2.0):1; (II) adding an additive and a dihydric alcohol chain extender, and continuously heating to enable a prepolymer to react with the dihydric alcohol chain extender; (III) adding the isocyanate to perform a reaction continuously, and in the reaction process, gradually adding a solvent and an additive in the system; and (IV) when meeting preset viscosity, adding micromolecule monohydric alcohol to terminate the reaction, adding an additive and a small amount of solvent, and sufficiently and uniformly stirring. As the poly dihydric alcohol is added to react with a part of isocyanate firstly, and the prepolymer which is ended by isocyanate groups is generated, soft sections and hard sections of the polyurethane resin can be sequentially arranged, the curing speed and the pore sizes of the resin can be controlled, the permeation degree of the resin in a glove core can be controlled, and thus the purposes that a glove is high in wearing resistance and easy to separate from a mold can be achieved.

This invention discloses a process for treating the etching waste solution of printed circuit board by microwave circulation. Wherein: neutralize the etching waste solution in the microwave waste water catalyzing treatment system, charge air to aeration, and then filtrate with pressure to separate other heavy metals and oil impurities; conduct the pressure filtration, stirring and cleaning for four times, add acid and alkaline to react until reaching the saturation extent which would generate precipitation; extract and clean the mother liquid which has deposited settling crystal for continuing circulation reaction; separate the cupric sulfate crystals from the waste liquid using centrifuge; and the remained waste liquid can be used to produce other chemical products after microwave circulation regeneration process. When applying the process of this invention to treat the etching waste solution of printed circuit board, the microwave catalyzing technology can accelerate the substitution rate and improve the copper ion extraction rate. Besides, it comprehensively utilizes the waste water to produce other chemical products without waste water discharge, which thoroughly solves the serious environmental pollution problem caused by waste water discharge.

The invention relates to wet high-stripping polyurethane resin and a preparation method thereof. The wet high-stripping polyurethane resin is prepared from diisocyanate, a polyol compound, a micromolecule dihydric alcohol chain extender, a micromolecule diamine chain extender, a catalytic agent, an antioxidant and a solvent. By adopting a prepolymer process, the phase separation degrees of a hard section and a soft section of the polyurethane resin are improved, meanwhile, the micromolecule dihydric alcohol chain extender and the micromolecule diamine chain extender are blocked into a polyester molecular chain by process control in the prepolymerization process, the regularity and the cohesion of the soft section are improved, the condensation speed of the resin can be obviously improved in a leather process, the vehicle speed can be significantly improved when high-stripping leather is produced, meanwhile, the dimethyl formamide (DMF) residual quantity on a solvent-type synthetic leather surface is effectively reduced, and the effects of reducing energy consumption and protecting the environment are achieved.

The invention discloses a data scheduling method based on vehicle collaboration in an urban scene. The method implements data scheduling of vehicle collaboration through data information transmission between a vehicle and a roadside unit. The method comprises the following steps: a vehicle node periodically broadcasts a message; the roadside unit receives the broadcast message; request data is scheduled on the basis of speed prediction; data is transmitted between a request vehicle and a collaborative vehicle; and the scheduling data is cleaned. The method implements dissemination scheduling of the request data in a vehicle network in the urban scene, and reduces the network overhead.

A microwave integrated machine for production of an aerogel material and a method for continuous production of the aerogel material are disclosed. The invention belongs to the technical field of aerogel material production and especially relates to a microwave integrated machine and an efficient production method for continuous production of the aerogel material by using the microwave technique. The invention aims to solve the technical problem that existing aerogel preparation methods have long production period and the internal skeleton structure is collapsed and the thermal insulation performance is reduced. The method of the invention comprises the following steps: preparing a wet aerogel material, letting the wet aerogel material enter a solvent replacement device and then enter a hydrophobic modification device, and drying to obtain the aerogel material; letting the evaporated solvent gas enter a shell and tube condenser, condensing for gas-liquid separation, recycling the solvent, returning an inert gas to the equipment for recycling so as to complete a production period. According to the method, each solvent replacement only takes more than ten minutes, and each hydrophobicmodification only takes more than ten minutes. Thereby, production efficiency is greatly improved.

The invention provides a polymethylmethacrylate material micro-fluidic chip processing technology which is a technology used for processing of a micro-fluidic chip apparatus, belonging to the technical field of instrumental analysis science. A micro-fluidic chip is an apparatus used for rapid detection and analysis of liquid substances. The technology in the invention is a low-cost rapid processing technology for the micro-fluidic chip. The technology comprises direct laser printing of the micro-fluidic chip, heat sealing, hot-melt embedding and fixing of electrodes and circuits of the chip, designing of electric signal transmission through communication between the micro-fluidic chip and external equipment in virtue of contact electrodes and designing of a removable micro-fluidic chip fixing mount. With the technology provided by the invention, production of a micro-fluidic chip not involving an organic solvent is cheap, and the micro-fluidic chip is convenient to use and even becomes a disposable consumable. If the polymethylmethacrylate material micro-fluidic chip processing technology is used in batch production, cost for micro-fluidic chips is lower, and a critical promotion effect is exerted on industrialization and popularization of the micro-fluidic chips.

The invention discloses a method for extracting metallic lead from alkaline leaching solution of waste lead-containing glass. The method disclosed by the invention comprises the following steps of: heating the alkaline leaching solution of lead-containing glass to 50-80 DEG C; then, adding flaked metal zinc powder generated by electro-deposition and a surface active agent while stirring to carry out displacement, wherein the mass ratio of lead to zinc powder in the leaching solution is (0.29-0.31):1; and the addition amount of the surface active agent is 1-10mg / L; and then, carrying out solid-liquid separation, adding the metal zinc powder into filtrate again so as to remove the impurity, namely lead; electrically depositing solution with lead removed, repetitively using the obtained flaked metal zinc powder in replacement reaction, and returning the solution to leach the lead-containing glass. According to the invention, the problem that sponge metallic lead obtained by direct electro-deposition is difficultly cleaned in the thick alkaline leaching solution of the lead-containing glass is solved; simultaneously, the zinc powder obtained after electro-deposition does not need to be cleaned and can be directly used for replacement reaction of the leaching solution of the lead-containing glass in a circulating manner; and thus, closed-loop circulation of the solution is realized.

The invention provides a sponge bismuth powder displacement and deposition method under the action of micro-currents, and belongs to the technical field of hydrometallurgy. According to the sponge bismuth powder displacement and deposition method, an iron plate connected with a positive electrode of a power supply and a graphite plate connected with a negative electrode of the power supply are immersed in feed liquid containing bismuth, direct currents are provided for a displacement reaction, and sponge bismuth powder is obtained. Compared with bismuth powder obtained through a traditional iron powder displacement method, the sponge bismuth powder obtained through the sponge bismuth powder displacement and deposition method is high in grade and has few impurities; compared with bismuth powder obtained by displacement only with the iron plate, the direct micro-currents promote the displacement process and accelerate displacement, and therefore the displacement efficiency is improved greatly. The sponge bismuth powder displacement and deposition method under the action of the micro-currents is simple in preparing process, the obtained sponge bismuth powder is high in purity, and industrial production can be implemented conveniently.

The invention discloses an air inflating tool for protecting the welded back surface of a stainless steel plate. The air inflating tool comprises a back-protecting air inflating groove which is arranged in a manner of being matched with a welding seam in the welded back surface; a V-shaped or U-shaped air inflation protective hood is arranged inside the back-protecting air inflating groove; a diffusion buffer is slidably arranged inside the air inflation protective hood; and the end, positioned outside the back-protecting air inflating groove, of the diffusion buffer is provided with a protective air pipe joint. When being used for implementing flat welding operation for the stainless steel plate, the air inflating tool is simple and convenient to operate, achieves a good protection effectand improves the work efficiency. The air inflating tool is light, portable and reasonable in structure and can be regulated and moved according to actual welding length. Air inflation is optimized by adopting an input air diffusion buffer; the back surface is intensively protected; the back surface of the welding seam of the stainless steel plate is mainly white and golden yellow, and an optimalprotection effect is achieved; argon enters a protection region via the diffusion buffer so that the argon and the air are exchanged more quickly; and thus the oxygen content in the protection regionis reduced relatively quickly.

The invention discloses a method and a system for treating a black and odorous river channel with dual synaesthesia tides. The treatment system includes an upstream water inlet gate, a downstream water outlet gate and a control center; The upstream inlet estuary of the river channel, the downstream outlet gate is arranged at the downstream outlet estuary of the dual-sense tide black and odorous channel; the upstream inlet sluice gate and the downstream outlet sluice gate are respectively connected with the control center. Through the PLC automatic control system of the control center, according to the liquid level information fed back by the inner liquid level gauge and the outer liquid level gauge, jointly dispatch the opening and closing of the upstream inlet gate, downstream outlet gate, tributary estuary gate, large-flow axial flow pump, and large-scale drainage vehicle. closure. The method of the invention is suitable for the rapid and effective relief of the black and odorous river channels of the double synaesthesia tide, and does not affect the functions of flood control, navigation, waterlogging drainage and the like of the river channel, and is a double channel with the advantages of short construction period, low investment, low operation cost, convenient maintenance and the like. Comprehensive management methods for black and odorous rivers.

The invention discloses a treatment system and method for a single-pass tidal black-smelly river. The control system includes an upstream river gate, a downstream estuary gate and a control center; For the river channel, the downstream estuary gate is set at the downstream estuary of the single-pass tidal black and odorous river channel; the upstream river channel gate and the downstream estuary gate are respectively connected to the control center. Through the PLC automatic control system of the control center, according to the liquid level information fed back by the inner liquid level gauge and the outer liquid level gauge, jointly dispatch the opening and closing of the upstream river gate, the downstream river mouth gate, the tributary river mouth gate, the large flow axial flow pump, and the large drainage vehicle . The method of the present invention is suitable for fast and effective mitigation of single-channel tidal black and odorous rivers, and does not affect the functions of river flood control, navigation, and drainage. Comprehensive control measures for tidal black and odorous rivers.

The invention discloses a quality-guaranteed sulfuric acid storage device and a method for improving the quality of sulfuric acid. The quality-guaranteed sulfuric acid storage device comprises a barrel body, an acid inlet pipe, a dryer, a breathing pipe, a liquid level gauge and an acid outlet pump; the barrel body is a sealed structure, the bottom of the barrel is equipped with an acid outlet, and the acid outlet and the acid pump are connected by pipelines; the acid inlet pipe extends into the barrel until it reaches the bottom of the barrel, the bottom of the acid inlet pipe is sealed, and the acid inlet pipe is on the side wall There is an acid outlet; the dryer is installed on the top of the barrel and communicates with the inside of the barrel; the breathing pipe is installed on the top of the dryer and communicates with the dryer; the liquid level gauge is located outside the barrel and communicates with the barrel. The quality-guaranteed sulfuric acid storage device of the present invention can protect sulfuric acid very well, avoiding the pollution of sulfuric acid by water and corrosive substances, thereby ensuring the quality of sulfuric acid, and can be used repeatedly; The quality of sulfuric acid ensures the colorlessness and transparency of sulfuric acid, and avoids the pollution of heavy metals and residues.

The present invention completes computer simulation of glass flow state inside tank furnace, establishes material changing formula and determines the change rule of high transmissibility glass residue concentration with time. Finally, one material changing method from producing high transmissibility display tube glass to producing low transmissibility display tube glass is determined, and the method includes determining recipe, recipe switching and tank furnace temperature regulation. By means of the said method, one display tube glass producing tank furnace in yield of 200 ton / day may has its material changed in 48 hr with controllable nodes and stable technological parameters and glass quality.

The invention relates to a valve casting molding and cooling technology, and mainly solves the problem of low valve casting molding processing efficiency in the prior art. The technology includes thefollowing steps that 1) molding sand is dried and then divided into two parts including first molding sand and second molding sand; 2) a sand mold is filled with the first molding sand, and a coolingdevice is embedded in the sand mold; 3) die-casting is performed on a metal plate through a stamping process to form a heat conducting plate matched with the part structure; 4) the heat conducting plate covers the first molding sand of the sand mold; 5) the rest second molding sand is uniformly mixed with a binder, the upper surface of the heat conducting plate is uniformly covered with the mixedsecond molding sand and binder, and a mold cavity is formed through curing; and (6) liquid metal is poured into the mold cavity, after pouring is completed, a water pump is started to pump cooling water into a water guide pipe and a heat dissipation pipe to rapidly discharge heat on the heat conducting plate, and solidification of the liquid metal in the mold cavity is improved.

The invention provides an electrostatic air purification device, which comprises: a charging chamber (2), which has an air inlet (1) for inflowing air; a charging device (3), which is arranged in the charging chamber In the chamber (2), it is used to charge the solid particles in the air; the water tank (4), which is arranged under the charging device (3), is used to collect the charged solid particles; in the charging device ( 3) An electric field is formed between the water tank (4) and the charged solid particles to accelerate downwards, so that the charged solid particles fall into the water tank (4). The electrostatic air purification device provided by the present invention does not need to replace the filter screen, but simply replaces the dirty water, and can generate negative ions, which can not only prevent the generation of ozone, but also effectively remove harmful substances in the air.

The invention aims to provide a rapid ion-enhanced method for soda-lime-silica glass and soda-lime-silica ion-enhanced glass, belongs to the technical field of glass enhanced treatment and in particular relates to a rapid ion-enhanced method for soda-lime-silica glass. The method comprises the following steps: providing a soda-lime-silica glass product, and cleaning with deionized water; providingan aqueous solution comprising an ion-exchange material, and uniformly spraying the aqueous solution into a mold cavity; placing the cleaned glass product inside the mold cavity; placing the mold with the built-in glass product on an induction heater, and performing ion exchange enhancement; stopping heating, taking the glass product out of the mold, naturally cooling in air, and drying after ultrasonic cleaning, thereby obtaining the soda-lime-silica glass product subjected to ion exchange enhancement. According to the method disclosed by the invention, the ion-enhanced time of the soda-lime-silica glass is greatly shortened, and ions that are difficult in ion exchange, such as Ca<2+>, Al<3+> and the like, can be exchanged, so that the production efficiency is improved, the cost and energy consumption are reduced, and a new path is provided for improving the strength of the soda-lime-silica glass.

The invention discloses a high-physicochemical-property electrolyte preparation device and preparation method. An exhaust pipe is arranged on the top surface of a tank body; the outlet of the exhaustpipe is connected to a sucking pump and a circulating pipe in parallel, the outlet of the circulating pipe is connected to the inlet of an inflation mechanism in parallel, a circulating pump and a one-way valve are sequentially installed at the outlet of the circulating pipe, and the one-way valve is used for preventing nitrogen in a nitrogen conveying pipe from entering the circulating pipe; thecirculating pump is used for driving nitrogen to circularly move; the sucking pump communicates to a liquid recovery mechanism, and the liquid recovery mechanism is used for recovering liquid in the gas; gas in the tank body is eliminated in a vacuumizing mode and a nitrogen filling mode, air in the tank body can be effectively removed, air residues are avoided, the product quality of the electrolyte is guaranteed, the physical and chemical properties of the electrolyte are improved, and even if a gap exists in the top surface of the tank body, the nitrogen for filling can be dispersed out ofthe gap, so that the gap is filled.

The invention discloses a system for online modifying the target address of a device, comprising a bus, a second apparatus communicating through the bus, and a first apparatus for inputting a target address to be replaced. The second apparatus reads the target address to be replaced in the startup process and replaces the original target address information. The invention discloses a method for online modifying the target address of a device. The first apparatus inputs a valid target address to the second apparatus through the bus. The second apparatus receives and stores the target address ina storage unit. The device reads the target address in the startup process. The invention discloses a device online management method. A host sets an address segment, and sets the second apparatus inthe field within or outside the address segment through the first apparatus so as to manage whether the field device is present in the project management or not. According to the system and the method for online modifying the target address of a device, and the device online management method, the target address information can be replaced conveniently, the information replacing speed is effectively improved, and the working efficiency is improved.

A microwave integrated machine for producing airgel materials and a method for continuously producing airgel materials, the invention belongs to the technical field of airgel material production, and in particular relates to a microwave integrated machine and efficient production of continuous airgel material production using microwave technology method. The invention aims to solve the technical problems of long production period and collapse of internal skeleton structure in the existing method for preparing airgel, which lead to the decline of thermal insulation performance. The method is as follows: prepare the wet airgel material, the wet airgel material enters the solvent replacement device, then enters the hydrophobic modification device, and then dries to obtain the airgel material, and the evaporated solvent gas enters through the dehumidification pipeline In the shell and tube condenser, the gas and liquid are separated after condensation, the solvent is recycled, and the inert gas is returned to the equipment for recycling to complete a production cycle. The method of the invention only needs ten minutes for each solvent replacement, and only ten minutes for each hydrophobic modification, which greatly improves the production efficiency.

The invention provides olive salting liquid and a method for preventing production of olive precipitate. The olive salting liquid is prepared from the following raw materials in parts by weight: 100 parts of water, 12 to 16 parts of sodium chloride, 0.6 to 1.2 parts of sodium metabisulfite, and 0.2 to 0.6 part of citric acid. The method for preventing the production of the olive precipitate comprises the following steps of 1, beating and flattening the olives after the epicutile wax layer is removed; 2, boiling the beat and flattened olives in water for 5 to 10min at the temperature of 80 to 100 DEG C; 3, soaking the boiled olives into the olive salting liquid. The method for preventing the production of the olive precipitate has the advantages that by performing beating and flattening, boiling, and controlling of component of olive salting liquid, the production of the olive precipitate is effectively prevented; the method is simple, the condition is controllable, the operability is strong, the salting time and the preserved olive processing cycle are greatly shortened, and the production cost is reduced.

The invention discloses a water filtering composite filter element which structurally comprises a filter element shell, a threaded connector, a cover plate and a limiting ring are arranged on the filter element shell, the threaded connector is welded to the bottom of the filter element shell, and the cover plate is connected with the upper end of the filter element shell through a threaded connecting plate. The limiting ring is welded to the bottom of the interior of the filter element shell, a threaded pipe and a filter element body are arranged on the cover plate, and the threaded pipe is welded to the upper end of the cover plate. The composite filter element can effectively filter silt, colloid, rust, macromolecules and the like in water, can adsorb harmful substances such as residualchlorine, different colors, peculiar smells and organic matter in the water, retains trace elements and minerals beneficial to human bodies, purifies healthy water, does not need to be disassembled and assembled by using a disassembling and assembling tool, accelerates the replacement speed of internal parts of the composite filter element, and is improved in convenience during disassembly and assembly.

The invention provides olive salting liquid and a method for preventing production of olive precipitate. The olive salting liquid is prepared from the following raw materials in parts by weight: 100 parts of water, 15 to 20 parts of sodium chloride, 0.6 to 1.5 parts of sodium metabisulfite, and 0.2 to 0.6 part of citric acid. The method for preventing the production of the olive precipitate comprises the following steps of 1, puncturing the olive after the epicuticle wax layer is removed; 2, soaking the punctured olive into the olive salting liquid. The method for preventing the production of the olive precipitate has the advantages that by puncturing to change the permeation speed of the salting liquid and control the component of the olive salting liquid, the production of the olive precipitate is effectively prevented; the method is simple, the condition is controllable, the operability is strong, the salting time and the preserved olive processing cycle are greatly shortened, and the production cost is reduced.

The invention relates to the technical field of cashmere carding devices, and discloses a cashmere carding device with an impurity removal function. The cashmere carding device structurally comprises a base; a flat carding mechanism, a carding mechanism and a collecting box are arranged on the base; the flat carding mechanism is fixedly connected to the left side of the upper end of the base; the carding mechanism is fixedly connected to the upper end of the base and located on the right side of the flat carding mechanism; the collecting box is located in the middle of the upper end of the base; a feeding hopper and a material guide plate are arranged on the flat carding mechanism; and the feeding hopper is fixedly connected to the upper portion of the left end of the flat carding mechanism. According to the cashmere carding device, the tensioning degree of a carding belt is automatically adjusted, the situation that operators adjust the tensioning degree of the carding belt by themselves is avoided, the speed of replacing the carding belt is increased, the time of treating waste materials by the operators is saved, the number of the operators in the using process of the cashmere carding device is reduced, and the cost in the cashmere carding use process is reduced.

The invention provides an eastern Junggar coal concurrent boiler drainage system. Drainage pipelines are additionally arranged, when the content of iron ions of demineralized water in a first drainage pipeline is smaller than a preset first threshold value, the added drainage pipelines can be opened, demineralized water in a startup drainage tank can be discharged at the same time through the drainage pipelines, and therefore the washing time of an eastern Junggar coal concurrent boiler is shortened, the replacement speed of iron ions is increased, and the consumption of demineralized water raw water is reduced. In addition, the added drainage pipelines can be connected with a recovery device, and therefore demineralized water can be recycled, and energy conservation and consumption reduction are achieved.

The invention discloses a dismounting and replacing device for a drill pipe coupling or joint, and relates to the technical field of drill pipe dismounting and replacing. The dismounting and replacingdevice comprises a base, wherein a notch and a limiting plate are arranged at the front end of the base; a door-shaped frame and a lifting device are fixed on the upper surface of the base; a first clamping device is arranged on one side of the top of the door-shaped frame in a sliding fit mode; a feeding device is fixed in the middle of the door-shaped frame, and a second clamping device is fixed at the end part of the feeding device; a fixing seat is arranged at the top end of the lifting device; and the second clamping device comprises two side strips which are oppositely arranged on the two sides of a transverse plate, and the opposite inner sides of the top ends of the two side strips are fixedly connected with clamping frames through first telescopic rods. According to the dismounting and replacing device, a drill pipe and the drill pipe coupling are sequentially fixed through the fixing seat and the second clamping device, the drill pipe coupling is disassembled step by step, the drill pipe coupling is installed through the cooperation of the feeding device and the second clamping device, the dismounting and replacing speed of the drill pipe coupling is increased, and the working efficiency of a drilling machine is guaranteed.

The invention provides an eastern Junggar coal concurrent boiler drainage system. Drainage pipelines are additionally arranged, when the content of iron ions of demineralized water in a first drainage pipeline is smaller than a preset first threshold value, the added drainage pipelines can be opened, demineralized water in a startup drainage tank can be discharged at the same time through the drainage pipelines, and therefore the washing time of an eastern Junggar coal concurrent boiler is shortened, the replacement speed of iron ions is increased, and the consumption of demineralized water raw water is reduced. In addition, the added drainage pipelines can be connected with a recovery device, and therefore demineralized water can be recycled, and energy conservation and consumption reduction are achieved.

The invention discloses a data scheduling method based on vehicle collaboration in an urban scene. The method implements data scheduling of vehicle collaboration through data information transmission between a vehicle and a roadside unit. The method comprises the following steps: a vehicle node periodically broadcasts a message; the roadside unit receives the broadcast message; request data is scheduled on the basis of speed prediction; data is transmitted between a request vehicle and a collaborative vehicle; and the scheduling data is cleaned. The method implements dissemination scheduling of the request data in a vehicle network in the urban scene, and reduces the network overhead.

The invention discloses a felt product modification tunnel machine. The machine comprises a modification box, a conveying device for conveying felt products, at least one ultrasonic device for increasing the replacement speed of a modified solution and an acid solution inside the felt products, a modified solution heating circulating system connected with the modification box and used for extracting the modified solution inside the modification box, heating the extracted modified solution and returning the heated modified solution to the modified box, and a modified solution supplementing andacid solution collecting system connected with the modification box and used for supplementing the modified solution into the modification box and collecting the replaced acid solution. The modification box contains the modified solution; the conveying device is installed inside the modification box, and at least one section of the felt products on the conveying device is soaked with the modifiedsolution; the ultrasonic device is installed inside the modification box; the replacement speed of the acid solution inside the felt products and the modified solution can be increased, and the modification efficiency and the modification effect of the felt products are improved.

The invention relates to a valve pouring molding cooling process, which mainly solves the problem of low processing efficiency of the valve pouring molding in the prior art. 1) After the molding sand is dried, it is divided into two parts, namely the first molding sand and the second Second molding sand; 2) Fill the first molding sand in the sand mold, and embed a cooling device in the sand mold; 3) Die-cast a metal plate through a stamping process to form a heat conducting plate that matches the structure of the part; 4) Put the heat conducting plate Cover the first molding sand of the sand mold; 5) Mix the rest of the second molding sand with the binder evenly, and evenly cover the mixed second molding sand and binder on the upper surface of the heat conducting plate and solidify to form a mold cavity 6) pour the liquid metal into the mold cavity, after the pouring is completed, turn on the water pump to pump the cooling water into the water guide pipe and the heat dissipation pipe to quickly discharge the heat on the heat conducting plate, so as to improve the solidification of the liquid metal in the mold cavity.

The invention discloses an integrated system and method for monitoring food-grade CO2 on line, the integrated system comprises an analysis cabinet, a pretreatment unit, an analyzer combination unit and a tail gas emission unit are installed in the analysis cabinet, and the right side of the analysis cabinet is provided with an anti-explosion air conditioner and a control unit; the upper part of the analysis cabinet is a positive pressure sealing area, and the lower part is a control area; a pressure sensor, a temperature sensor, a bypass throttle valve and an analyzer combination unit are mounted in the positive pressure sealing area; and the control area is provided with an air inlet valve and a pretreatment unit. The analysis system can be used for completing node analysis and finished product gas impurity total analysis in a food-grade carbon dioxide purification process, and the quality of food-grade carbon dioxide product gas is guaranteed. Compared with a traditional analysis method, the integration level is higher, real-time analysis is carried out on a production site, and data can be directly uploaded to a control center.