91results about How to "Ensure durability" patented technology

The utility model relates to the technical field of coated cover plates, in particular to a coated cover plate structure, which comprises a glass cover plate serving as a base layer and a decorative layer cover plate, solid optical cement is arranged at the bottom of the glass cover plate; the decorative layer cover plate is adhered to the bottom of the glass cover plate through solid optical cement; a plurality of heat dissipation channels are reserved in the decorative layer cover plate; a coating layer is arranged at the top of the glass cover plate; the coating layer provides corrosion resistance and protection for the glass cover plate; an ink layer is arranged at the bottom of the decorative layer cover plate. According to the utility model, a multifunctional composite layer structure is constructed on the glass substrate through a layered coating technology. Scratches and abrasion in daily use are effectively resisted, and durability and attractiveness of the photosensitive color-changing ink layer are guaranteed. According to the design principle of the whole structure, the stability, the conductivity, the attractiveness and the intelligent color changing function of the glass cover plate are comprehensively improved through the synergistic effect of all layers of materials.

The utility model relates to the technical field of steel anticorrosive coating spraying technology, and disclose a spraying device for high-strength steel anticorrosive coating, including frame, the bottom fixed assembly of frame has the moving wheel, the outer wall fixed mounting of frame has the controller, the top fixed mounting of frame has the platform, the top of platform is equipped with steel limiting assembly and spraying assembly respectively, the top fixed assembly of platform has the struts. By placing the steel in the inner wall of the placing table, at this time, the controller can emit signals, so that the air pump two can be started, so that the air pump two can be adsorbed by the adsorption gas outlet to the steel placed on the top of the placing table, the steel can be fixedly installed on the top of the placing table, so that the steel can be conveniently anticorrosive coating spraying work, and when the servo motor works, the placing table can be driven to rotate, so that the steel placed on the top of the placing table can be sprayed all-round.

The invention discloses an anti-static and anti-abnormal-sound coating for a durable automobile sealing strip and a preparation method of the anti-static and anti-abnormal-sound coating in the field of functional coating materials. The coating is prepared from hydroxy acrylic resin, two special functional fillers, auxiliaries and a solvent. Wherein the vinyl functionalized polypyrrole-silver nanowire hybrid conductive fiber provides a lasting static dissipation path, and the epoxy siloxane grafted perfluoropolyether solid lubricating particles provide long-acting lubrication through chemical bonding so as to eliminate abnormal sound. When the coating is prepared, the resin and the adhesion promoter are dissolved in the mixed solvent to form a resin liquid, then the two functional fillers and the lubricating additive are added after being pre-dispersed, and finally the mixture and the cross-linking agent are mixed and cured. The coating is firmly attached to the surface of the sealing strip through chemical bonding and endows the sealing strip with stable and lasting anti-static, noise-reducing and wear-resisting performance, and the process is simple and convenient and suitable for large-scale production.

This invention discloses a high-stiffness unbonded collaborative loading system and its construction method, belonging to the field of structural engineering testing technology. The system comprises a side-coordinated steel beam positioned on opposite sides of the structure under test; a top-plate loading steel beam, arranged in a cross shape within the side-coordinated steel beam, with its ends connected to the side-coordinated steel beam; the top-plate loading steel beam is a double-layer unbonded sleeve assembly, including an inner square steel tube and an outer circular steel tube sleeved around it, with a preset gap between the inner square steel tube and the outer circular steel tube; and multiple horizontal prestressing tendons arranged around the outer circular steel tube, with their ends connected to the side-coordinated steel beam. This invention employs the aforementioned high-stiffness unbonded collaborative loading system and its construction method, separating the force transmission channel from the fixed interface through a tube-in-tube unbonded design, thus solving the problems of local buckling, deformation coupling, and poor side-coordinated performance in traditional loading schemes during ultra-large tonnage tests.

The utility model discloses a kind of wind pressure resistance reinforcing structure of broken bridge aluminum door and window, belong to aluminum door and window reinforcing technical field, the inside of first frame body is equipped with protruding frame, the corner of protruding frame is equipped with first limit strip, first limit groove for clamping is formed between multiple first limit strips, the middle section of protruding frame is equipped with abutting arc part, and inner groove is formed in the inside of abutting arc part;The inside of second frame body is equipped with inner boss, and the corner of inner boss is equipped with second limit strip. By first, second limit groove clamping cooperation, and the reinforcing rib structure of oblique support strip, insertion strip and abutting strip composition, improve broken bridge aluminum door and window wind pressure resistance performance, make it keep stable under severe weather. First, second frame body and its related components integrated design, reinforcing structural stability, reduce security risk. Abutting arc part and opening cover and other components design, stable structure, ensure that door and window long-term stable durable, prolong service life.

This utility model provides a reinforced arc-shaped curved plate structure support leg, comprising: a base plate, on the upper surface of which a reinforcing plate, a strengthening plate, and a strengthening block are fixedly connected respectively. The strengthening block is fixedly connected to the outer side of the reinforcing plate, and the strengthening plate is fixedly connected to the inner side of the reinforcing plate. A connecting pipe is fixedly connected to the upper end of the reinforcing plate, and arc-shaped plates are symmetrically connected to both ends of the upper surface of the connecting pipe. The arc-shaped plates are fixedly connected to the surface of the reinforcing plate. A through hole is formed at the lower end of the inner pipe, and the connecting pipe is movably connected within the through hole. This utility model, through the cooperation of the reinforcing plate, connecting pipe, arc-shaped plate, strengthening plate, and strengthening block, enables a movable connection between the base plate and the inner pipe, and effectively enhances the structural strength between the base plate, the connecting pipe, and the strengthening plate.

The utility model discloses an I-shaped steel fixing device which comprises I-shaped steel, the I-shaped steel comprises an upper flange and a lower flange, a middle web is arranged between the two flanges, a fixed part is placed on one flange, two U-shaped fixing shafts are connected to each fixed part and the position to be fixed on the I-shaped steel in a clamped mode, and the U-shaped fixing shafts are connected with the I-shaped steel in a clamped mode. The U-shaped fixing shaft is in a U shape, the lower end of the U-shaped fixing shaft penetrates through the flange tightly attached to the fixed part and is provided with a first thread, and the lower end of the U-shaped fixing shaft is in threaded connection with a first nut through the first thread. The two U-shaped fixing shafts at one fixed position are symmetrically installed with the middle web as the reference plane, friction blocks are arranged on the two opposite sides of the fixed part, the friction blocks are made of materials with large friction force with the I-shaped steel, and the I-shaped steel fixing device has the advantages of being high in practicability and firm in fastening.

This utility model relates to the field of rainwater chain technology, and in particular to a non-splashing rainwater chain structure, including a lotus-shaped outer liner, an inner liner cylinder inside the lotus-shaped outer liner, a first mounting hole, a second mounting hole and a hollow design on the outer surface of the inner liner cylinder, a first connecting strip at the top of the inner liner cylinder, a first connecting chain inside the first connecting strip, and an inner substrate seat at the bottom of the lotus-shaped outer liner. The bottom of the inner liner cylinder is fixedly connected to the inner substrate seat. By using the lotus-shaped outer liner, the inner liner cylinder, the hollow design and the inner substrate seat in combination, the directional guidance of rainwater and the suppression of splashing are achieved. The bottom of the inner liner cylinder is connected to the inner substrate seat, and the inner liner cylinder is located inside the lotus-shaped outer liner. The hollow design ensures the structural strength while increasing the permeability of rainwater, avoiding the increase in pressure caused by water accumulation, and has aesthetic appeal and reduces the overall weight. The inner substrate seat plays a stable supporting role, ensuring the stability and durability of the entire rainwater chain structure.

This application discloses a micro-expansion low-heat silicate cement-based concrete material, its preparation method, and its application, belonging to the field of concrete engineering technology. Each cubic meter of micro-expansion low-heat silicate cement-based concrete material comprises 78-92 kg of water, 82-161 kg of micro-expansion low-heat silicate cement, 28-105 kg of fly ash, 476-608 kg of sand, and 1286-1696 kg of aggregate. The dosage of naphthalene-based water-reducing agent is 0.4 wt%-0.6 wt%, and the dosage of air-entraining agent is 0.014 wt%-0.018 wt%. The air content of the concrete material in the mixed state is 4%-5%, and the slump is 35-50 mm. Through the synergistic proportioning of water, micro-expansion low-heat silicate cement, fly ash, sand, and aggregate, the low heat of hydration and micro-expansion characteristics of micro-expansion low-heat silicate cement are fully utilized.

The invention relates to an oral cavity cleaning appliance which comprises a handle extending along a first axis and a flushing head movably arranged at the end of the handle. The handle comprises a shell, a movement device, a water storage area and a pump. A liquid storage cavity and a driving cavity separated from the liquid storage cavity are formed in the shell; the moving device is arranged in the driving cavity and used for driving the flushing head to reciprocate along the first axis; the moving device comprises a moving shaft, and a hollow runner extending along a first axis is arranged in the moving shaft; the moving shaft comprises a first end and a second end which are oppositely arranged, and the first end penetrates through the end, close to the flushing head, of the handle and is connected with the flushing head; the water storage area is arranged in the driving cavity; the second end extends into the water storage area, and the water storage area is used for providing a space for the movement shaft to move along the first axis; the pump is arranged in the driving cavity and communicates with the liquid storage cavity and the water storage area. The pump pumps liquid in the liquid storage cavity to the flushing head through the water storage area and the hollow flow channel.

The invention discloses a benchmark protection device, and relates to the technical field of benchmark protection, the benchmark protection device comprises a shell assembly, the shell assembly comprises a protection shell, the lower end of the protection shell is provided with a protection shell gasket, the upper end of the protection shell is provided with a cover plate, and a cover plate gasket is arranged between the protection shell and the cover plate; the opening and closing assembly comprises a connecting plate, a first rotating rod, a second rotating rod, a spring, a clamping piece, a pressing piece and a limiting piece; the box staff fixing assembly comprises a benchmark, a ball bearing and a box staff rotating bin. The beneficial effects of the invention are that through the cooperation of the cover plate and the opening and closing assembly, the protection shell is closed and opened, under the action of the clamping piece, the cover plate is ensured to be closed tightly, and the cover plate is kept open stably without affecting the measurement under the action of the internal force of the opening and closing assembly during opening; the benchmark is protected through the protective shell, the benchmark is prevented from being corroded and damaged by rainwater, dust and the like, durability of the benchmark can be better guaranteed, the telemeter rod fixing assembly is matched, a telemeter rod can be better fixed during measurement, manpower is saved, and meanwhile the measurement accuracy can be improved.

The invention discloses a compound traditional Chinese medicine preparation for improving tumor immunity and resisting tumors, belongs to the technical field of anti-tumor traditional Chinese medicines, and discloses a compound traditional Chinese medicine preparation for improving tumor immunity and resisting tumors. The traditional Chinese medicine composition comprises the following components in parts by weight: 10-25 parts of ginseng, 15-18 parts of selfheal, 12-18 parts of seaweed, 12-19 parts of astragalus membranaceus, 10-16 parts of angelica sinensis, 18-30 parts of oldenlandia diffusa, 10-15 parts of fleece-flower root, 10-14 parts of poria cocos, 10-16 parts of thunberg fritillary bulb, 8-14 parts of pseudobulbus cremastrae seu pleiones and 8-17 parts of curcuma zedoary. Through the specific pharmacological action, growth and proliferation of thyroid tumor cells are inhibited, the development speed of tumors can be slowed down, the malignancy degree of the tumors can be reduced, apoptosis of the thyroid tumor cells can be induced, and the number of the tumor cells can be effectively reduced by inducing apoptosis of the tumor cells, so that the anti-tumor purpose is achieved.

This utility model discloses an intelligent human-computer interaction terminal, belonging to the field of intelligent terminals. A bottom frame is installed at the lower end of the blackboard, and a front baffle is provided at the front end of the bottom frame. A chalk compartment is formed between the bottom frame and the front baffle. The wall of the chalk compartment is equipped with a cable management conduit, which facilitates the wiring of the terminal. Multiple through slots are opened at the upper end of the bottom frame. The cable management conduit and metal spring clips form channels within the arc-shaped shell, providing an orderly and convenient arrangement and routing path for the wires, avoiding wire clutter and improving the safety and reliability of the layout. The sealed design of the cable management conduit also prevents dust and moisture intrusion, protecting the wires and internal components. The heat dissipation mechanism efficiently conducts heat through heat dissipation fins, heat-conducting blocks, heat-conducting strips, and thermal grease, rapidly dissipating heat from the terminal's heating components. This not only reduces the operating temperature and improves operational stability and service life, but the metal fasteners also ensure the stability and durability of the heat dissipation effect.

The utility model provides a kind of spinneret, belong to textile machinery technical field.Its structure includes: a plurality of shunt cone is arranged to form array in the upper end of spinneret body, the shape of the array is regular hexagon, there are a plurality of spinneret hole in the periphery of each shunt cone;Every two adjacent shunt cone is arranged at equal intervals;Every two adjacent spinneret hole is arranged at equal intervals.The utility model is designed with new structure, can optimize the spinning process of fiber, improve the dispersion uniformity and surface quality of fiber.Through the structure design and material selection of spinneret, realize efficient, stable fiber production.The spinneret includes spinneret body and multiple spinneret holes arranged on the spinneret body.The shape, size and arrangement of spinneret hole are carefully designed to achieve uniform dispersion of fiber.At the same time, spinneret body is made of high-temperature-resistant and wear-resistant material to ensure stability in high temperature and high pressure environment.

The utility model discloses an inward tilt-turn window waterproof structure and an inward tilt-turn window with the inward tilt-turn window waterproof structure. The inward tilt-turn window waterproof structure comprises a first profile and a second profile. A first sealing strip is arranged at the front end of the side face of the first profile, a second sealing strip is arranged in the middle of the side face of the first profile, and a first sealing part is arranged at the rear end of the side face of the first profile. The second section bar is a side frame of an inward tilt-turn window sash, the second section bar and the first section bar are oppositely arranged, a second sealing part is arranged at the front end of the side face of the second section bar, a first heat insulation rubber strip is arranged in the middle of the side face of the second section bar, and a third sealing strip is arranged at the rear end of the side face of the second section bar. When the inward tilt-turn window sash is in a closed state, the first sealing strip abuts against the second sealing part in a sealed mode, the first heat insulation rubber strip abuts against the second sealing strip in a sealed mode, the third sealing strip abuts against the first sealing part in a sealed mode, and the third sealing strip abuts against the second sealing part in a sealed mode. A first isobaric cavity and a second isobaric cavity which are adjacent front and back are formed between the first sectional material and the second sectional material, and both the first isobaric cavity and the second isobaric cavity are communicated with the outside. Through fine design of specific components and formation of the isobaric cavity, the waterproof performance and the thermal performance of the window and the stability and the durability of the whole structure are remarkably improved, and a more comfortable, safer and energy-saving living environment is provided for a user.

The utility model discloses a widening structure for new and old bridges with large height difference, which relates to the field of widening transformation of old bridges and comprises a first bridge body and a second bridge body. The first bridge body embedded steel bars and the second bridge body embedded steel bars are embedded in the tops of the first bridge body and the second bridge body respectively; the first bridge floor cast-in-place layer and the second bridge floor cast-in-place layer are both poured at the top ends of the first bridge body and the second bridge body; the anchoring steel bars are embedded in the top of the second bridge body and located at the bottoms of the second bridge body embedded steel bars, the lightweight concrete precast blocks are arranged at the top end of the second bridge body, and the outer sides of the lightweight concrete precast blocks are matched with the second bridge body embedded steel bars and the anchoring steel bars correspondingly. The lightweight concrete leveling layer is reasonable and reliable in structure, the lightweight concrete precast blocks are adopted to replace a traditional concrete leveling layer, the weight is reduced by 30%-50%, the dead load of the newly-added leveling layer is controlled within 15% of the live load of an original bridge, and the influence on the original bridge structure is remarkably reduced.

The application belongs to the technical field of dustproof filtration, and discloses an intelligent dustproof device for a municipal foundation trench and a use method, wherein the intelligent dustproof device for the municipal foundation trench comprises a pair of side rails, a plurality of sliding blocks are slidably connected to the top of the pair of side rails, a driving steel wire is fixed to the sliding blocks on one side, a steel wire suspension cable is fixed to the middle of the sliding blocks on both sides, and the installation plate, rotating rod, extrusion rod and other structures are matched, so that the device can be unfolded into a triangular surface support in strong wind, support is provided on both sides of the dustproof mesh screen, the tearing resistance is good, the use durability of the dustproof mesh screen is effectively improved, and after unfolding, the adjacent two rotating rods can be connected by magnetic attraction sub-catches and magnetic attraction female catches. Thus, the two sides of the dustproof mesh screen form a mesh support, the continuous mesh surface clamps the dustproof mesh screen in the middle, effectively improves the wind resistance, and ensures the use continuity and durability of the dustproof mesh screen.

This invention provides a common-mode filter. An exemplary embodiment of the common-mode filter is disposed in a configuration hole in a circuit board including a configuration hole of a predetermined area, comprising: a magnetic core formed into a ring shape using a magnetic material; a plurality of coils wound around the outside of the magnetic core; and a base member coupled to the magnetic core wound with the plurality of coils, and having a plurality of connecting members for electrically connecting the plurality of coils to an external source; wherein a portion of the base member is engaged with the edge side of the configuration hole.

This invention discloses a friction damping bearing with multiple sliding surfaces, belonging to the field of bridge seismic isolation bearings. The lower surface of the upper bearing plate is a convex surface with a radius of curvature R1, and an upper sliding plate is tightly fitted and fixed to the lower surface of the upper bearing plate. The upper surface of the liner plate has a concave curved surface with a radius of curvature R1, the lower surface has a convex curved surface with a radius of curvature R2, and the side surface is an inclined surface. An upper wear-resistant plate, a lower wear-resistant plate, and an inclined wear-resistant plate are tightly fitted and fixed to the upper surface, lower surface, and side surface of the liner plate, respectively. The upper surface of the lower bearing plate has a concave surface, including an inclined surface at the lower bearing edge and a curved surface at the lower bearing center with a radius of curvature R2. The lower sliding plate is tightly fitted and fixed in the concave surface of the lower bearing plate. Curved sliding friction pairs are formed between the upper wear-resistant plate and the upper sliding plate, between the curved surface at the lower sliding plate and the lower wear-resistant plate, and between the inclined surface at the lower sliding plate edge and the inclined wear-resistant plate. The multiple sliding surfaces achieve seismic energy dissipation and buffering / limiting.

The utility model provides an outer frame structure of a French bread baking tray. The outer frame structure aims at improving stability and efficiency in the baking process. The baking tray comprises a baking tray body and is characterized in that a plurality of mutually connected curved grooves are formed in the baking tray body, and a frame structure composed of an annular frame, a protruding block, a limiting block and a clamping plate is arranged outside the baking tray body in a sleeved mode. The annular frame is tightly attached to the baking tray body, the protruding block is fixed to the side wall of the annular frame, the annular frame is sleeved with the limiting block, and the clamping plate is fixedly connected to the lower portion of the limiting block and connected with the baking tray body. In addition, through holes are evenly distributed in the baking tray body, mounting plates corresponding to the annular frames are arranged at the two ends of the baking tray body, rivets are arranged on the inner sides of the mounting plates or the baking tray is fixed through welding, and the baking tray is inserted into the oven through the mounting plates. And the curved grooves are horizontally or arc-shaped connected through the connecting plates to form a stable structure. By means of the design, the stability of the baking tray is enhanced, even distribution of heat is promoted through the through holes, local overheating is avoided, and the quality of baked food is ensured.

The utility model discloses a massage air bag assembly and seat massage system, include: a plurality of massage air bags, a plurality of massage air bags are around arrangement along one setting axis, and support air bag, a plurality of massage air bags are attached on support air bag, and support air bag will a plurality of massage air bags support into height adjustable, wherein, massage air bag includes at least two air bag units of laminated arrangement, and the adjacent two massage air bags are connected through at least one flexible band, and the flexible band configuration can be adjacent two massage air bags between the skew of the extrusion massage of inflation and deflation implementation to make a plurality of massage air bags keep in around arrangement state basically, the utility model discloses massage air bag adopts at least two air bag units of laminated arrangement, and the adjacent top layer's air bag unit is connected through the flexible band, to prevent the deviation when inflating or deflating, ensure the stability and accuracy of massage air bag.

This utility model belongs to the technical field of concrete mixing equipment and discloses an anti-jamming unloading gate device, including a concrete mixer body. The concrete mixer body includes a hopper and a discharge port opened at the bottom of the hopper. A first mounting frame is fixedly connected to the bottom of the discharge port, and a second mounting frame is fixedly connected to the bottom of the first mounting frame. A movable plate is slidably connected to the second mounting frame, and a push plate is fixedly connected to the movable plate. This utility model sets up two independent drive components, electric drive and manual drive, and selects the connection through a locking component. When the electric push rod cannot work due to failure or power failure, it can be quickly disconnected and switched to manual screw drive mode, so that the operator can still open and close the unloading gate in a very short time, effectively avoiding the problem of concrete solidifying inside the equipment due to prolonged retention.

The invention relates to the technical field of building punching equipment, in particular to a lifting type punching device for high-altitude drilling, which comprises a base, four rollers are arranged on the lower side of the base, a supporting pipe is fixedly mounted in the center of the upper end face of the base, a sliding rod is slidably mounted on the inner wall of the supporting pipe, and the sections of the supporting pipe and the sliding rod are rectangular. The electric drill is arranged on the supporting rod, accurate lifting of the electric drill in the vertical direction is achieved by means of sliding connection between the sliding rod and the supporting pipe and stable thrust provided by the feeding unit, the percent of pass of follow-up anchor bolt installation is further improved, meanwhile, the electric drill is arranged on the supporting rod in a sliding mode, and meanwhile the machining efficiency is improved. Four rollers are arranged on the lower side of the base of the device, so that the transfer efficiency of the device is improved, the working efficiency is improved, the labor intensity is reduced, a storage battery is adopted as a power supply, the complexity of continuously changing the power supply wiring position in the working process is avoided, and the safety risk of operators is further reduced.

The utility model discloses a kind of crab automatic dormancy sequencing feeding assembly line, belong to crab sorting technical field, in turn including automatic dormancy device, sequencing feeding device and grading sorting device. Crab is carried out low-temperature treatment by low-temperature dormancy cavity and dormancy conveyor belt to automatic dormancy device, so that it enters quiet state, reduces stress reaction. Sequencing feeding device includes the feeding conveyor belt of the link of dormancy conveyor belt and is equipped with the guide structure of inclined guide surface, and single-column sequencing passage is formed between guide structure and feeding conveyor belt, realizes the ordered output of crab. Grading sorting device is equipped with image acquisition module, control system and actuating mechanism, generates sorting instruction according to shape feature data automatically, accurately push crab to corresponding sorting passage. The assembly line realizes the automation of live crab sorting whole process, improves processing efficiency and classification accuracy, solves the problem of low efficiency and poor precision of traditional manual sorting.

The utility model belongs to the technical field of military equipment, particularly relates to a multifunctional explosive ordnance disposal tool set with an arm band, and solves the problems that in the prior art, the function is single, the structure is fixed, operation is tedious, and height adjusting capacity is lacked. The device comprises a tool box, an arm band, a supporting structure, a locking and unlocking mechanism and a lifting adjusting mechanism. The tool box accommodates explosive-handling tools, and the integrated navigation module provides real-time data; angle adjustment of the supporting structure is achieved through multiple connecting rods; a locking and unlocking mechanism ensures reliable sealing of the tool box; and the lifting adjusting mechanism realizes height adjustment. According to the utility model, the efficiency, flexibility and safety of explosive ordnance disposal tasks can be improved, and the requirements of complex task environments are met.

The utility model relates to heating pad detection technical field discloses a kind of heating pad impact test device, including fixing frame, the front end of the fixing frame is provided with clamping mechanism, the clamping mechanism includes placement frame, the lower end of the both sides outer wall of placement frame is rotatably connected with first pulley, the both sides of placement frame front end outer wall are fixedly connected with positioning guide rail, the outer wall of positioning guide rail is slidably connected with positioning plate, the both sides of the outer wall of positioning plate rear end are fixedly connected with first guide block, the center of the upper surface of placement frame is fixedly connected with transmission module, the input end of transmission module is fixedly connected with servo motor. In the utility model, the device structure is simple, and user can place heating pad on positioning plate more conveniently, and install limit by limiting strip on lifting plate, by reducing complex mechanical structure, so that operation process is more intuitive, easy to grasp, and operation difficulty is reduced.

This utility model relates to a glass cover plate, comprising a first glass substrate and a second glass substrate stacked together. The first glass substrate and the second glass substrate are fastened together by a soft plastic ring. The soft plastic ring includes a left ring portion and a right ring portion. A locking component is provided on the left ring portion, and correspondingly, a fastening component is provided on the right ring portion. The locking component and the fastening component cooperate with each other to fasten and fix the left ring portion and the right ring portion. The front side of the first glass substrate is coated with a titanium diboride coating layer, a tin bronze alloy coating layer and a neodymium oxide coating layer from the inside to the outside. The non-viewing area of ​​the back side of the first glass substrate is coated with a thermochromic ink screen printing layer, a polyester resin layer and a chromium coating layer from the inside to the outside.

The invention provides a brown fused alumina smelting furnace high-temperature-resistant heat-insulation process which comprises the following steps: pretreating high-alumina bricks, selecting high-quality high-alumina bricks (the content is greater than or equal to 95%) and high-quality high-alumina bricks with high dimensional accuracy and excellent mechanical strength as a substrate material, blending slurry, and carrying out heat insulation and heat insulation. The self-grinding corundum micro powder (accounting for 88%-92% of the total mass of the coating) is selected from the self-grinding corundum micro powder with the content being larger than or equal to 98% and the particle size being 1-10 microns as a core functional raw material, coating and masonry are conducted, the pretreated high-alumina bricks are firstly laid flatly according to a conventional masonry technology, the masonry gap is controlled within 2 mm, oven curing is conducted, after masonry and coating are completed, final curing is conducted through a stepped oven technology, and the high-alumina bricks are manufactured. According to the invention, the self-developed corundum micro powder has excellent low heat conductivity, and a composite heat insulation system formed by the self-developed corundum micro powder and the high-quality high-alumina brick can effectively prevent heat in a smelting furnace from being dissipated outwards, so that the energy loss is greatly reduced.