1020results about How to "Avoid destruction" patented technology

The invention provides a preparation method of an ADC foaming agent for improving foaming pore density, which comprises the following steps: step 1, mixing a modified inorganic nucleating agent with water according to a predetermined mass ratio, adding a dispersing agent, and uniformly mixing to prepare uniform and stable suspension slurry to prevent agglomeration of the nucleating agent; 2, when the conversion rate of the biurea reaches 80%-85%, adding the suspension slurry, so that the inorganic nucleating agent is uniformly attached to the surface of the ADC crystal; and 3, continuing the oxidation reaction until the biurea conversion rate reaches 92% or above, and then washing, centrifuging and drying to obtain the ADC foaming agent. The ADC foaming agent for improving the foaming pore density is prepared by the method. The inorganic nucleating agent is added in the stage of preparing the ADC foaming agent, and compared with the inorganic nucleating agent added in the subsequent foam material preparation process, the density of foaming pores can be remarkably improved.

The invention discloses a high-resilience eTPU foaming material and a preparation process thereof, and belongs to the technical field of foaming materials. The process comprises the steps of raw material premixing and TPU chain extension reaction, precursor system injection, in-situ phase change energy storage core-shell particle generation, supercritical two-fluid foaming and molding post-treatment. Wherein the SiO2-coated TiO2 core-shell particles are prepared by a non-hydrolytic sol-gel method, the porous SiO2 core adsorbs and fixes the micro-crosslinked polyurethane-based phase change material, the TiO2 shell provides sealing and supporting, the particles are combined with the TPU matrix through covalent bonds, and the micro-crosslinked polyurethane-based phase change material has a unique micro-crosslinked network structure, so that the thermal conductivity of the TPU matrix is improved, and the thermal conductivity of the TPU matrix is improved. The hidden danger of leakage of the phase change material in the using process can be effectively eliminated, and meanwhile the interface bonding effect between the inorganic particles and the TPU matrix is synchronously enhanced. The eTPU foaming material prepared by the invention has the characteristics of high resilience, strong interface bonding, excellent energy storage stability and low compression set, and is suitable for shoe materials, automotive interiors and other scenes.

This invention provides an intelligent vibration temperature control device for concrete pouring in hydraulic engineering, relating to the field of vibration equipment technology. It includes a main vibrating rod, a lower connecting support rod, an external temperature control hose, and a temperature control storage tank. The lower connecting support rod and the external temperature control hose are arranged in a ring array on the outer side of the main vibrating rod. The external temperature control hose and the temperature control storage tank are interconnected. The tail end of the lower connecting support rod is rotatably connected to a middle connecting rod, and the tail end of the middle connecting rod is rotatably connected to the head end of an upper connecting support rod. The middle connecting rod, the upper connecting support rod, and the lower connecting support rod together form a V-shaped linkage mechanism and are arranged in a ring array outside the main vibrating rod. The external temperature control hose maintains a V-shaped bend simultaneously. The external temperature control hose extends and moves away from the main vibrating rod, expanding the temperature control influence range and improving temperature control efficiency. This solves the problem that the fixed, close-fitting temperature control pipeline for vibration can only cool a very small area of ​​concrete in the center of the vibrating rod, resulting in a small temperature control influence range.

The application belongs to the field of cutting tools, and provides a turning force measuring tool with embedded flexible sensors and a machine tool, which effectively measures the turning force without affecting the structure of the turning process, and ensures the accuracy and reliability of the signal, and the technical scheme comprises a tool body, the tool body comprises a blade, a positioning assembly and a clamping assembly for clamping the blade; the positioning assembly comprises a freedom degree limiting assembly for limiting the movement of the blade along the x-axis, y-axis and z-axis directions; a flexible sensor is arranged on the lower surface of the blade, a flexible circuit is arranged at the front end of the tool body, the pressure sensor and the flexible circuit are connected through flexible wires; the flexible sensor is used for converting the deformation of the blade under the action of the turning force into a voltage signal; and the flexible circuit is used for calculating the size of the turning force according to the relationship between the voltage signal and the turning force.

This utility model discloses a filter paperboard punching mechanism, relating to the field of filter paperboard processing technology. It includes a hydraulic punching main unit, with a punching worktable on the front side of the main unit. A lower punching die is fixedly connected to the upper front end of the worktable. A hydraulic telescopic rod is fixedly connected to the upper end of the main unit via a cantilever, positioned directly above the lower punching die. Through the use of elastic heating support pads and elastic pressure pads, the loose fiber structure of the filter paperboard is effectively prevented from being compacted, ensuring the air permeability and filtration efficiency of the filter paperboard. Simultaneously, the elastic heating support pads heat the filter paperboard when in contact with it, softening the fibers and preventing brittle breakage, thus improving the quality of the punching process. Furthermore, the elastic pressure pads further reduce the direct impact of the punching blade on the paperboard, resulting in a smoother punching edge, reducing burrs and fiber damage, and improving the overall quality of the product.

The invention discloses a process method for maintaining the luster and texture of a fabric in a cashmere garment processing process, which comprises the following steps: S1, inspecting the fabric before the cashmere fabric is tailored to ensure that the wool direction of the cashmere fabric is smooth; s2, the cashmere fabric is flatly laid on an intelligent cutting bed in a single-layer mode along wool, cloth is synchronously pulled from the two sides of the cutting bed at a constant speed, and it is confirmed that the cashmere fabric is flat and the yarn direction is perpendicular; s3, one-way cutting in the down-wool direction should be ensured during cutting, and after cutting of one edge of a cutting piece is completed, the cutting knife is lifted up and repositioned, and then the next edge of the cutting piece is cut until the cutting piece is taken down from the cashmere fabric; s4, all the cut-parts are put into a hanging system to be transported, and all abutted seams are sewn in the hair direction during sewing; s5, the clothes formed by sewing the cut pieces are flatly placed and ironed, and an ironing base plate is used for preventing an iron from making direct contact with the cashmere fabric; s6, hanging and ironing the sewn and flatly ironed clothes from top to bottom along the fluff of the overcoat, and naturally cooling after the ironing is completed; and S7, the cooled ready-made clothes are packaged in a single piece mode.

This invention discloses an anti-motion blur video stream edge detection system, belonging to the field of computer vision technology. Utilizing motion blur analysis and adaptive filtering techniques, this invention accurately identifies and corrects motion blur in dynamic scenes, avoiding the destruction of edge details during deblurring as is common in traditional methods. It can generate clear and complete edge images in complex environments. Through real-time processing requirement analysis and dynamic optimization mechanisms, the system automatically adjusts filtering parameters and feature extraction complexity, ensuring high detection accuracy while meeting real-time requirements. This significantly improves the overall performance and practicality of the system, enabling it to perform excellently in applications with high real-time requirements, such as intelligent monitoring and autonomous driving, ensuring efficient and stable operation in real-world scenarios.

The application discloses a method for excavating a connecting channel by using a plasma torch, and the method comprises the following steps: carrying out freezing construction in a stratum until a freezing wall is closed, and the soil in the excavation path of the connecting channel is frozen into a frozen soil body; drawing an excavation contour line of the connecting channel on a working face, the excavation contour line is drawn according to the excavation path of the connecting channel, and the excavation contour line is located in the enclosure of the freezing wall; S2, drawing a cutting line on the working face, the cutting line is located in the enclosure of the excavation contour line of the connecting channel; S3, cutting the frozen soil body along the cutting line by using the plasma torch to obtain a cutting groove; and S4, inserting a nozzle of the plasma torch into the cutting groove. By reasonably designing the cutting line layout and the cutting unit area and combining the high-efficiency melting and crushing of the frozen soil body by the plasma torch, the method overcomes the shortcomings of low efficiency and great difficulty of the traditional construction method, and improves the construction efficiency and safety of the connecting channel.

The present application relates to the technical field of feed processing, and particularly relates to a preparation method of Maotai-flavor distiller's grains fermented feed, which comprises the following steps: drying treatment based on the moisture content of Maotai-flavor distiller's grains to obtain basic distiller's grains; determining the strain ratio of brewer's yeast, bacillus subtilis and aspergillus niger based on the tannin content of the basic distiller's grains to obtain a compound fermentation inoculant; inoculating and then fermenting; determining state evaluation parameters based on the total polyphenol accumulation rate, the dissolved oxygen consumption rate and the microbial activity index during the fermentation process, and performing qualified evaluation, and dynamically adjusting when unqualified; determining the fermentation end point based on the tannin degradation rate and the total polyphenol accumulation rate; and mixing the fermented distiller's grains with the basic feed at a mass ratio of 1% after low-temperature drying of the fermented distiller's grains. The present application realizes three-layer control of raw material evaluation, process control and end point determination, significantly improves the stability and content of functional active ingredients in the product, reduces the tannin and safety risk, and has a good intestinal health improvement effect on animals.

The present application relates to a kind of essential oil composition with whitening and freckle lightening effect and its preparation method, belong to the technical field of cosmetics.The essential oil composition with whitening and freckle lightening effect provided by the present application includes Italian helichrysum oil, rice germ oil, sandalwood oil, white spring chamomile flower oil, rust red rose seed oil and pink passion fruit seed oil treated by specific fermentation process, all ingredients are derived from natural plants, no chemical synthetic substance is added, irritability is low, safety is high, has good whitening, freckle lightening effect, also has anti-inflammatory, antioxidant and barrier repair effect, suitable for various skin.

The application belongs to the technical field of sensor calibration, and provides a sensor batch calibration method and system based on multi-vision fusion. First, all-around vision information of the sensor and the detection table is acquired. Pose estimation is performed by fusing the all-around vision information. Then, on the basis of the pose estimation, the sensor barycenter position, the grabbing point intensity and the avoidance of sensitive areas are considered, the grabbing point selection is optimized, the impedance control algorithm is used for flexible grabbing, the grabbing force size is automatically adjusted according to the sensor material and the surface friction coefficient, and the sensor lofting is realized. The problem of sensor deformation or damage caused by excessive grabbing force is avoided, the calibration demand of different specifications of sensors is realized, and the batch sensor calibration precision and efficiency are improved.

The utility model discloses a photovoltaic assembly with reflective bus bars, which belongs to the field of photovoltaic technology and comprises a plurality of bus bars and a plurality of battery pieces, and the plurality of bus bars and the battery pieces are electrically connected with each other and packaged between a front cover plate and a rear cover plate. The light receiving surface of the bus bar is coated with an adhesive, the surface of the adhesive is uneven, and a plurality of reflective metal particles are fixedly connected through the adhesive. According to the utility model, the light-receiving surface of the bus bar is coated with the adhesive and fixedly connected with the reflective metal particles to form the concave-convex reflective structure, so that compared with the existing embossed V-shaped groove scheme, the bus bar has the advantages that the conductive sectional area is prevented from being damaged by embossing, and the current-carrying capability is ensured; thick adhesive film filling is not needed, and the packaging cost is reduced; the concave-convex structure is combined with the reflective particles through the adhesive, thereby enhancing the diffuse reflection of sunlight, improving the light receiving ratio of the cell, improving the power of the assembly, and avoiding the risk of assembly failure caused by the direct contact between the bus bar and the glass.

The application provides an improved method for a ceramic matrix composite integral blade disc, comprising the following steps: preparing a fiber preform according to the blade distribution density and the blade profile cross-sectional shape; obtaining a first integral blade disc according to the fiber preform; and setting a claw-shaped boss on the surface of the first integral blade disc to obtain a target integral blade disc; wherein the integral blade disc comprises a disc, N blades and a claw-shaped boss, and the disc and the claw-shaped boss are both made of a ceramic matrix composite. The ceramic matrix composite integral blade disc obtained from the fiber preform in the application can greatly improve the load capacity of the integral blade disc at the hub and the blade root part, and simultaneously reduce the difficulty and cycle of processing. Meanwhile, the claw-shaped boss set on the surface of the disc can effectively avoid the extrusion damage of the disc caused by the shaft deformation, and realize the effective force and torque transmission between the integral blade disc and the shaft.

The present application relates to the field of plunger pump, disclose a kind of slurry separation structure and plunger slurry pump, including pump body, flow guide pipe is equipped in pump body, the middle part of flow guide pipe is equipped with the isolation ring that follows plunger movement and moves up and down with action.Pumper upper part side end is equipped with plunger channel with medium oscillation cavity communication, plunger channel is connected with packing box, packing box is equipped with plunger, which can reciprocate transversely in plunger channel, flow guide pipe is located outside the lateral of plunger activity range.The present application can separate slurry medium, and effectively avoid the full turbulence of backwash medium and slurry medium, and plunger can be removed from the front end of pump body for maintenance, due to the existence of turbulence isolation ring, effectively shorten the size of pump body, improve the reliability of pump, maintainability, reduce manufacturing cost and improve the service life of spare parts.

The utility model discloses a sterilization device for sea-buckthorn primary pulp, which comprises a sterilization heating box, two heat insulation plates are welded in the middle of an inner cavity of the sterilization heating box, the inner cavity of the sterilization heating box is divided into three continuous spaces, namely a heating cavity, a connecting cavity and a sterilization cavity, and a spiral heating pipe is fixedly mounted in the heating cavity; and a spiral sterilization pipe is fixedly mounted in the sterilization cavity. According to the utility model, the temperature of primary pulp is raised to 90 DEG C in a short time through the spiral heating pipe, so that the heating efficiency is improved; microorganisms in the primary pulp are fully killed through the spiral sterilization tube, and heat-sensitive nutritional ingredients are prevented from being damaged by high temperature for a long time; rapid cooling of the primary pulp is achieved through the cooling pipe, and secondary damage to nutrition caused by continuous heat action is reduced; the multiple temperature sensors monitor the temperature in the heating, sterilizing and cooling stages in real time, the feeding speed, the water suction pump power, the heater temperature and the semiconductor refrigeration power are dynamically adjusted in combination with the industrial computer, and whole-process precise temperature control is achieved.

The application relates to a kind of building construction concrete film-coating maintenance devices, effectively solve the problem of complicated repair operation, low film-coating efficiency;Its technical solution is to solve that the main beam is transverse, the left and right ends of the main beam are each equipped with a hopper, the lower end of each hopper is equipped with a front and rear direction support roller through a support;The lower end of the hopper is provided with a plurality of front and rear arranged distribution devices;The distribution device includes an elastic telescopic rod on the outside and a vertical pipe on the inside, the lower end of the telescopic rod is equipped with a roller, the upper end of the vertical pipe is sealed and the sidewall is provided with an opening, the upper end of the vertical pipe is placed in the hopper, the vertical pipe can move up and down and reset downward;After the telescopic rod moves downward, the vertical pipe can be lifted, so that the opening in the sidewall of the vertical pipe is placed in the hopper;The device does not need personnel to enter the construction site, avoids the damage of personnel to the site, and realizes remote construction.

The utility model relates to integrated mare milk processing equipment, which belongs to the technical field of mare milk processing, and comprises a processing box, the left side of the processing box is provided with a disinfection assembly for disinfecting mare milk, the disinfection assembly comprises a motor fixedly connected to the left side of the processing box, and an output shaft of the motor is fixedly connected with a rotating rod. A transmission gear is fixedly connected to the outer side of the rotating rod, a driven gear is meshed with the top of the transmission gear, a connecting rod is fixedly connected to the inner side of the circle center of the driven gear, stirring paddles are fixedly connected to the outer side of the rotating rod and the outer side of the connecting rod, and heating pipes are fixedly connected to the inner sides of blades of the stirring paddles. According to the integrated mare milk processing equipment, mare milk is uniformly heated through stirring, it is ensured that the mare milk can reach the effective disinfection temperature, most microorganisms are killed, damage to nutritional ingredients caused by local high temperature is avoided, and ultrasonic waves generated by the ultrasonic generator can damage cell structures of the microorganisms in the mare milk through the cavitation effect.

The utility model discloses a kind of winding packaging assemblies, for packaging equipment technical field.The utility component includes: packaging sheet, packaging sheet winding forms the winding structure with multiple layers of winding turns, winding gap for placing rib net is formed between adjacent winding turns, the thickness of winding gap is matched with the rib material diameter of rib net;Restraint, restraint is connected with packaging sheet, restraint is used to detachably fix the winding turn layer located outermost on the outer surface of adjacent inner side winding turn layer.Carry out packaging when rib net, since the thickness of winding gap is matched with the rib material diameter of the rib net, can greatly reduce the situation that long size especially small diameter rib material on rib net is mutually entangled when winding packaging;And the whole winding type occupied space of well-packaged rib net is less, can maximumly reach container allowable load, simultaneously rib net structure can be prevented from being damaged in transportation process;And the packaging is simple to remove, user is convenient to use.

The utility model discloses a wastewater treatment device for anhydrous acetonitrile production, which comprises a mixing tank and a sedimentation tank which are communicated through a suction pump. A feeding hole is formed in one side of the top of the mixing tank, a flow guide plate is fixed on one side of the inner wall of the feeding hole, a wastewater input pipe and a medicament input pipe are arranged on the flow guide plate, and flow dividing bulges are also arranged on the inner wall of the flow guide plate; a bearing plate is arranged on the inner bottom wall of the sedimentation tank, positioning plates are fixed to the two sides of the bearing plate, and an electric heating rod is further arranged in an inner cavity of the bottom of the sedimentation tank. And the two treatment modes of mixing and precipitation are carried out separately and do not interfere with each other, so that the effect is better.

The utility model relates to the field of feed processing especially relates to a mixed fermentation tank for feed production, including box, stirring frame, air pump and silica gel diaphragm vane, the inside of box is equipped with stirring frame, the lower extreme of box is equipped with air pump, the surface of stirring frame is equipped with silica gel diaphragm vane, the inside bottom of box is equipped with mounting post, the upper end fixed of mounting post has sealed bearing, the inner ring rotating end of sealed bearing is fixedly connected with stirring frame, the inside of stirring frame is equipped with gas path and is linked with silica gel diaphragm vane, the inside of mounting post is also equipped with gas path and is linked with air pump. The device can realize the different realization adjustment silica gel diaphragm vane of more feed viscosity and the effect of auxiliary full -scale stirring, has solved the problem that the single stirring mode of the existing feed fermentation tank stirring system stirs, easily damages the surface structure of feed.

The application discloses a safety door device of a ship engine room shed, which comprises a cabin aisle, an inner door arranged at the entrance of the cabin aisle, an inner protection mechanism arranged in the cabin aisle, an outer protection mechanism connected to the outer wall of the cabin aisle, and an auxiliary mechanism arranged in the outer protection mechanism. When the protection door is closed, the latch plate is inserted into the U-shaped groove, the pull block is pulled outwards, the pull block pulls the spring and drives the plug block to move out of the plug hole, the insertion rod can be inserted into the through hole and the square groove, the insertion rod fixing column latches the plate, thereby fixing the protection door. In addition, the insertion rod is completely immersed in the inner side of the through hole, the insertion rod can be located at the central position of the protection door by using the fact that the pull block is located at the center of the protection door, the two sides of the peripheral frame are prevented from being damaged, the insertion rod can be taken out at will, is far away from the two side edges of the peripheral frame, and the time for opening the protection door is prolonged.

This invention relates to the field of polymer materials technology, specifically disclosing a flame-retardant thermoplastic elastomer compound and its preparation method. The flame-retardant thermoplastic elastomer compound comprises 50-80 parts SEBS, 10-30 parts PP, 5-15 parts compatibilizer, 10-30 parts composite flame retardant, 3-10 parts plasticizer, 0.2-1 parts antioxidant, and 0.1-0.5 parts lubricant. The composite flame retardant is prepared by reacting and mixing an intumescent flame retardant, barium metaphosphate, boron nitride, triallyl isocyanurate, and SEBS. The flame-retardant thermoplastic elastomer compound of this application possesses good flame retardancy, mechanical properties, and water resistance stability.

This invention relates to the field of decorative engineering technology, and discloses a method and system for generating virtual renderings of decorative engineering projects. The method includes: S1, parsing CAD drawings; S2, identifying professional intent; S3, defining and configuring key aesthetic elements; S4, attributing and correcting model parameters; S5, conflict detection; S6, adaptive fusion and correction; S7, material mapping and lighting calculation; and S8, outputting the virtual rendering. This invention solves the problem that the complexity of CAD drawings leads to incomplete or inaccurate geometric structures in 3D models, which in turn affects material mapping and lighting calculation, thus impacting the visual realism of virtual renderings.

The invention discloses a valve welding-free pressure test device which is composed of a pressure boosting protection structure, a position adjusting structure and a valve sealing structure, the pressure boosting protection structure comprises an I-shaped steel frame and a lifting lug, the lifting lug is connected to the I-shaped steel frame, and a crane is connected with the lifting lug to move the I-shaped steel frame; the position adjusting structure comprises slideways symmetrically arranged on the I-shaped steel frame in the vertical direction and sliding blocks sliding along the slideways, valve sealing structures are arranged on the sliding blocks, the valve sealing structures abut against the two sides of the to-be-tested valve, pressure is applied to the interior of the to-be-tested valve, and the pressure of the valve is tested. According to the welding-free pressure testing device for the valve, hoisting and transportation of the valve are avoided through the design of the pressure boosting protection structure, and the operation difficulty and potential safety hazards caused by the gravity center problem are effectively avoided; meanwhile, the welding-free design also reduces the risks of scald, fire and the like caused by welding operation, and ensures the personal safety of workers.

This application discloses a sofa inner frame, including a seat frame, a sealing plate on the front of the seat frame, and several connecting tenons on the left and right sides of the seat frame. A backrest frame is connected to the back of the seat frame, and several connecting tenons are also provided on the left and right sides of the backrest frame. A first side panel is provided on the left or right side of the seat frame and the backrest frame, and a second side panel is provided on the other side. Connecting mortises adapted to the connecting tenons are provided on the first side panel and the second side panel. The sofa inner frame also includes an armrest frame, which is located on the left or right side of the seat frame and connected to the seat frame. This application achieves the insertion connection between the seat frame and each side panel, and between the backrest frame and each side panel, by the cooperation of the connecting tenons and the connecting mortises, eliminating the need for brad nails for connection and reinforcement. The mortise and tenon structure not only makes the connection more stable, but also reduces the impact force when entering the wood, avoiding damage to the wood and thus protecting the sofa inner frame and improving its stability.

This invention discloses an organocobalt salt for improving the tensile strength of rubber and its preparation method, belonging to the field of rubber technology. The organocobalt salt for improving the tensile strength of rubber comprises, by mass parts, 140-210 parts of organosilicon vegetable fatty acid, 20-30 parts of solvent, 20-30 parts of cobalt hydroxide, and 10-16 parts of propionic acid. The organosilicon vegetable fatty acid is obtained by reacting rosin with organosilicon maleimide. The organosilicon maleimide is obtained by reacting maleic anhydride with a silicon-containing long-chain fatty amine. The silicon-containing long-chain fatty amine is obtained by reacting methyldiethoxysilane with an unsaturated long-chain fatty amine. The organocobalt salt obtained by this invention has a good effect on promoting the adhesion between metal and rubber while effectively improving the tensile strength of rubber.

This invention belongs to the field of space laser communication and deep space exploration technology, and discloses an integrated detection device for space laser communication monitoring and interaction. The device includes a main body, on which are integrated a solar panel, a navigation imaging device, a communication antenna, a communication receiver, a radar, a landing support, and functional components for communication monitoring, environmental perception, and interactive operation. This invention forms a closed-loop system through electrical, signal, and mechanical connections, enabling simultaneous execution of multiple tasks, significantly improving the device's space operation efficiency, reducing the load pressure on space launch vehicles, and adapting to the space constraints of on-orbit operations. The communication antenna and receiver achieve bidirectional signal interaction through a high-speed laser communication module and are linked with the navigation imaging device and environmental sensors to ensure stable transmission and status monitoring of laser communication signals, which is beneficial for practical applications and operations.

This invention relates to the field of concrete admixtures, specifically to an anti-mud polycarboxylate superplasticizer, its preparation method, and its application. The anti-mud polycarboxylate superplasticizer provided by this invention comprises, by weight, the following raw materials: 100-180 parts of unsaturated polyether monomer, 5-10 parts of unsaturated carboxylic acid monomer, 2-5 parts of air-entraining monomer, 5-10 parts of anti-mud monomer, 10-20 parts of oxidant, 0.4-0.6 parts of reducing agent, 5-7 parts of chain transfer agent, and 150-300 parts of water; the air-entraining monomer and the anti-mud monomer have specific structures. The simultaneous introduction of specific anti-mud monomers and air-entraining monomers into the anti-mud polycarboxylate superplasticizer of this invention not only reduces clay adsorption but also provides better dispersibility and anti-mud effect at lower dosages, increasing the overall workability of concrete and improving concrete performance.

The invention discloses an ultrathin electronic glass slag box pressure control device and a using method, the ultrathin electronic glass slag box pressure control device comprises a nitrogen pipeline connected with a slag box, the output end of the nitrogen pipeline is sequentially connected with a U-shaped heating pipe and an output pipe, the output pipe is connected with a branch pipe in parallel, and the branch pipe extends to a lower cavity of the slag box through a cylindrical exhaust head; the nitrogen pipeline is provided with an electric butterfly valve, the input end of the heating pipe is provided with a flowmeter, the lower cavity of the slag box is provided with a pressure tapping pipe and a pressure gauge, and the output pipe and the branch pipe are wrapped by composite insulating layers. Through cooperative control of the electric butterfly valve, the flowmeter and the pressure gauge, the micro-positive pressure of the lower cavity of the slag box is maintained so as to block external invasion, nitrogen is heated and heat preservation is performed by means of tin bath waste heat, the process consistency is guaranteed, the quality of the lower surface of glass is remarkably improved, the requirements of TP grade judgment and the like are met, and the device is suitable for ultrathin electronic glass production scenes.