1795results about How to "Easy to clean and maintain" patented technology

The invention relates to a carbon fiber wetland type ecological floating bed and an arrangement method thereof, belonging to the field of sewage treatment. The carbon fiber wetland type ecological floating bed comprises a bed body, a biological carbon fiber material, floating bed plants and a wetland tank, wherein the wetland tank is arranged in the bed body; the interior of the wetland tank is filled with a porous light-weight artificial wetland filler; the floating bed plants are planted in the middle of the filler; and the biological carbon fiber material is hung on a suspension rod at the bottom of the wetland tank. According to the carbon fiber wetland type ecological floating bed, the processes of the ecological floating bed, bio-contact oxidation and the artificial wetland are reasonably combined to ensure that sewage is firstly subjected to bio-contact oxidation to degrade most pollutants, then the sewage is intercepted and further degraded through the wetland structure, and finally, through the absorption effect of plant roots, the quality of the sewage is better improve; and meanwhile, the reasonable layout of plants can be used for achieving the purposes of beautifying the environment, improving the ecological diversity and promoting the degradation effect on the pollutants of the whole floating bed system.

This invention is a heat pump runner type heat transferring system of sewage or surface water source. It relates to a heat transferring system. This invention resolves the question of complex technological flow, difficult clean and maintenance, high initial cost, large floor space and poor running effect. The heat transferring medium export of this system is communicated to the entry of pressure relieving devices. The export of the pressure reliving device is communicated to the entry of the heat transferring medium pump. The export of the heat transferring medium pump is communicated to the entry of the heat pump unit. The export of the heat pump unit is communicated to the heat transferring medium entry of runner type heat transferring device. The sewage directly enters into the runner type heat transferring device for initial heat transfer. The sewage or surface water source entry terminal does not need to arrange filtering net or blocking device. Its blocking will not happen.

The invention discloses a melamine veneer and a preparation method thereof, and belongs to the technical field of decorating materials. The melamine veneer is composed of a substrate and melamine impregnated paper. The melamine impregnated paper is obtained by impregnating paper in a melamine resign adhesive and processing the impregnated paper. The melamine resin adhesive has better activity as the formula thereof is determined by repeated tests. The melamine veneer has a simple processing technology, which causes the melamine resin adhesive to be more evenly and thoroughly immersed into decorating paper. The veneer formed by pressing has a plurality of advantages of the traditional melamine veneer such as high hardness, good abrasion resistance and good heat resistance, good chemical resistance, smooth and clean surface, easy maintenance and cleaning and the like, and further has the advantage of high luminance.

The invention discloses a device for separating a gas phase and a liquid phase in an air conditioner, a compressor, a tower, or an evaporator. The device comprises a shell cover, a cylindrical structure, and a flow baffling cover, a flow guide conical surface, a flow distributing cylinder, centrifugal channels, a liquid discharge pipe and an exhaust port, wherein the cylindrical structure is arranged below the shell cover, the flow baffling cover and the flow guide conical surface are arranged in the device, the flow distributing cylinder is provided with a top cover, the exhaust port is arranged on the shell cover and is communicated with the external world; the lower bottom of the flow guide conical surface is fixed on the inner wall of the cylindrical structure; the bottom of the flow distributing cylinder is fixed on the top of the flow guide conical surface; the flow baffling cover is fixed on the lower part of the flow guide conical surface through a connecting rod; at least two rectangular holes are equidistantly formed in the side wall of the flow distributing cylinder; the centrifugal channels are arranged at each of the rectangular holes, wherein a section of each of the centrifugal channels is a rectangular expanded section, and the centrifugal channels are arranged along the tangential direction of the flow distributing cylinder; and a liquid channel communicating the upper part and the lower part of a flow guide cone is arranged at the bottom of the flow guide conical surface.

An improved brine maker includes a hopper having open upper and lower ends, a solids screen, and a receiving tank having an open upper end and closed lower end. The solids screen and receiving tank are pivotally secured to the hopper adjacent its lower end. The receiving tank and solids screen pivot freely and independently of the hopper to provide quick and easy access for cleaning and maintenance. Rotatable spray bars are positioned within the hopper to direct the dissolving fluid at the soluble material within the hopper. Spray holes having varying diameters and spaced relation to one another customize the fluid spray pattern for greater efficiency. A hydraulic assembly assists the operator throughout the cleaning and maintenance operations of the brine maker to reduce the time and manpower required.

The invention discloses a reaction device for simulating migration and transformation of a soil organic pollutant, relates to a reaction device, and solves the problem that existing leaching experiment equipment for simulating the migration and transformation of the soil organic pollutant is large in experimental error, low in equipment use ratio and poor in adaptability The reaction device comprises a first water box, a second water box, a water pump, a water inlet pipe, a steady flow pipe, a support, a supporting frame, a base, a fixed plate, a first regulating valve, a second regulating valve, multiple flowmeters, multiple sieve hole plates, multiple earth pillars and multiple fifth regulating valves, wherein the first water box, the support and the supporting frame are all arranged on the base; the fixed plate is connected with the supporting frame, and the second water box is supported through the supporting frame; the supporting frame is provided with the multiple earth pillars which are vertically arranged, each flowmeter is arranged right above each earth pillar, the multiple flowmeters are fixedly arranged on the fixed plate, and the sieve hole plates are fixedly arranged on the support. The reaction device disclosed by the invention is used for simulating the migration and transformation of the soil organic pollutant.

The invention provides an external anaerobic membrane bioreactor comprising an anaerobic tank, a tubular membrane component, tubular ultrafiltration membrane elements and a clear water tank, wherein the tubular ultrafiltration membrane elements are vertically arranged in parallel in the tubular membrane component. The invention also provides a corresponding waste water purification technology of the external anaerobic membrane bioreactor. The waste water purification technology includes the steps as follows: firstly conducting purification treatment on waste water to be treated in the anaerobic tank, collecting biogas which is generated after treatment, filtering and separating the treated waste water in sequence by a fine grating and the tubular ultrafiltration membrane elements, at last leading out the leached clear water, backwashing and chemically washing the tubular ultrafiltration membrane elements at time intervals, drip-washing the collected biogas, and then pumping the biogas together with sewage into the tubular ultrafiltration membrane elements, so that the washing effect of the inner walls of the tubular ultrafiltration membrane elements can be improved. As for the external anaerobic membrane bioreactor and the waste water purification technology thereof, the energy consumption in operation is low, the quality of effluent is good, and blockage does not happen easily.

The invention discloses a wall-hung thin type lampblack depurating machine, which is provided with flat cuboid-shaped shell, wherein a double-volute is arranged in the shell, and two isolated chambers of the double-volute share an air outlet passage on the top of the shell; a turbo-fan with a horizontal output shaft is arranged in the two isolated chambers of the double-volute respectively, and the front end of the output shaft of the turbo-fan extends out of the double-volute and is connected with at least one vertical rotary centrifugal filter screen plate; and the outside of the rotary centrifugal filter screen plate is provided with an annular oil guide ring, the bottom of the annular oil guide ring is provided with an oil leak opening, a fume flow distribution plate is arranged below the annular oil guide ring, an oil guide tank is arranged on the fume flow distribution plate, and the bottom of the shell is provided with an air inlet passage and an oil collection box. The wall-hung thin type lampblack depurating machine has ultra-high efficiency for holding up and collecting lampblack, can basically put an end to the pollution caused by the lampblack to the air, the shell and the external wall of a building, and has the characteristics of overall closure, simple structure, convenient cleaning, energy saving and noise reduction, large cooking space, safe running and long service life.

The invention discloses an automatic distributing mechanism of connector posts for wire connecting terminals, which comprises a distributing base, a feeding device, and a distributing device; a transverse groove is arranged in the length direction of the distributing base, and a pushing groove communicating the transverse groove is arranged on the distributing base vertical to the length direction of the distributing base; the feeding device comprises a guide slot used for accommodating a connector post row to pass through, and the other end of the guide slot is provided with a pushing device for pushing the connector post row to advance along the guide slot; the distributing device is fixedly arranged on one side of the distributing base, and comprises a pushing cylinder block connected with the distributing base; a pushing cylinder is arranged on the pushing cylinder block, and the action end of the pushing cylinder is connected with a slide block which is inserted into the transverse groove in a matching way; the slide block is provided with a longitudinal groove matched with the specification of workpieces of the connector posts; and the lateral surface of the slide block facing the pushing groove is provided with a two-step step-like limit groove which is arranged close to the lateral surface of the longitudinal groove of the pushing cylinder. The mechanism has simple structure, and realizes the feeding and the distributing of the connector posts through less cylinders and one slide block.

The present invention relates to a thermoplastic foaming polyurethane fiber board, a production method and uses thereof. The thermoplastic foaming polyurethane fiber board comprises an A surface layer, a B middle layer and a C bottom layer, wherein the A surface layer, the B middle layer and the C bottom layer are integratedly compounded from top to bottom, the A surface layer is a sheet material prepared by carrying out mixing calendaring on a TPU resin, a filler, a fire retardation agent, a stabilizer, a lubricant and a colorant according to a certain ratio, the B middle layer is a layer prepared by foaming the sheet material prepared by carrying out mixing calendaring on a TPU resin, a filler, a fire retardation agent, a stabilizer, a lubricant and a colorant according to a certain ratio, and the C bottom layer is a layer prepared by drying a fiber cloth impregnated with a TPU composition. The thermoplastic foaming polyurethane fiber board can be used as flooring boards, wall panels, roof hanging plates and indoor partition boards, and can be used for production of furniture materials and various building materials.

The invention discloses a matrix-type honeycomb photocatalysis plasma purifier comprising a housing and a purifying unit module arranged and between an inlet and an outlet in the inner cavity. The purifying unit module consist of a primary filter, an electrostatic precipitation filter, a photocatalysis plasma catalyzing and purifying filter and a positive-negative ion stirrer which are sequentially arranged from the inlet to the outlet; then the air sequentially entering from the inlet and having impurities is purified, and fresh air is discharged finally at the outlet. The matrix-type honeycomb photocatalysis plasma purifier integrates the functions of high-efficiency sterilization, virus killing, dedusting, deodorization, formaldehyde removal, decoration gas removal and organic waste gas degradation, realizes large specific surface and high dust collection efficiency and discharges static electricity at the front end and the back end so as to ionize the air with static electricity discharging efficiency higher than the conventional single-area static electricity discharging efficiency; the photocatalysis plasma catalyzing and purifying filter catalyzes and oxidizes harmful chemical odorous gas, and generated plasmas are in high concentration, so that germs can be completely killed; and the matrix-type honeycomb photocatalysis plasma purifier suffers little wind resistance and realizes massive dust collection.

The invention provides a biological activated carbon fiber, an ecological carbon fiber composite comprising the same and a preparation method thereof. The preparation method of the biological activated carbon fiber comprises the steps of, after polyacrylonitrile fibre, the viscose fiber and the pitch fiber to 200 to 300 DEG C in the rate of 3 to 5 DEG C / min, performing preoxidation treatment for 50 to 150 min and to form a preoxidized fiber; in a nitrogen atmosphere, gradually warming the preoxidized fiber to 700 to 800 DEG C in the rate of 10 to 30 DEG C / min, performing charring and activating treatment for 30 to 90 min using water vapor as an activator, to form the biological activated carbon fiber. The specific surface area of the biological activated carbon fiber is more than 1000 m2 / g and is reasonable in pore size distribution and high in adsorbability. By adopting the biological activated carbon fiber in sewage disposal, a membrane structure can be formed and the removal rates of CODcr and ammonia nitrogen can both be evidently enhanced after membrane formation.

The invention relates to a highly-efficient paint mist coagulant and an application method thereof. The paint mist coagulant includes an A reagent and a B reagent, the A reagent is a water solution mainly prepared by a modified macromolecule polymerization metal salt, the macromolecule polymerization metal salt is aluminium salt or iron salt; the B reagent is a water solution mainly prepared by a polymerization amide-type substance with molecular weight of 9 millions to 12 millions. When in application, the paint waste water is blended with the A reagent and the B reagent according to volume ratio of 500:2:1, thus leading the paint in the paint waste water to cake and float, the paint and the water are separated, clear water is obtained to reuse. The usage is firstly adding the A reagent, and adding the B reagent after even blending. The processed paint waste water is fat-soluble paint waster water and water-soluble paint waste water. The highly-efficient paint mist coagulant has a wide reagent source, effectively overcomes the disadvantages of the trivial preparation process, many and complex additional reagents and high price of the traditional paint mist coagulant, can reduce common paint waste water treatment cost to 0.25 yuan / ton and can be widely used in circulating water treatment in a wet-typed paint mist removing system.

The invention relates to a portal robot welding machine. The portal robot welding machine comprises guide rail assemblies arranged on the ground at a certain interval, wherein driving mechanisms are arranged at the upper ends of the guide rail assemblies; inverted V-shaped upright posts are fixed at the upper ends of the driving mechanisms; a welding arm cross-shaped moving mechanism is arranged above the upright posts; a carrying platform is fixed at the back end of the welding arm cross-shaped moving mechanism; a robot system is arranged at the bottom of the welding arm cross-shaped moving mechanism. Welding work of workpieces of irregular shapes or a large quantity can be finished rapidly and accurately in a three-dimensional space by using the motion of the guide rail assemblies, a longitudinal guide rail and a transverse guide rail; the labor intensity of workers is lowered, the automatic degree is high, the welding accuracy is high.

The invention relates to a method for designing a shading transition facility for a road tunnel entrance. The facility mainly comprises transparent toughened glass plates (2), a plurality of arched steel-structure upright columns (3), cicada-wing-shaped nontransparent shading films (5) and a shading transition retroreflection system, wherein the arched steel-structure upright columns (3) are gradually heightened outwardly from tunnel cave entrance end walls (1), and horn-shaped openings are formed by the arched steel-structure upright columns (3) and the transparent toughened glass plates (2) on the upright columns; the cicada-wing-shaped nontransparent shading films are arranged on inner layers of the transparent toughened glass plates, and contour line planes and side face projections of the shading films are Boltzmann curves, and the two sides of each arched steel structure are triangularly hollowed; the retroreflection system comprises medium-frequency steel-structure upright column contour marks (7), medium-frequency guardrail contour marks (8), high-frequency guardrail facade marks (9), high-frequency pavement marking lines (10) and high-frequency pavement protrusion marks (11). The shading transition facility has the advantages that the intense transition of space, luminance and reference of the tunnel entrance can be improved, and the black-hole effect on the tunnel entrance is relieved.

The invention discloses an elastoplastic device for expansion joints in buildings and road engineering. The elastoplastic device comprises a cast-in-place concrete layer and a bituminous concrete pavement layer arranged on the upper end of the cast-in-place concrete layer, wherein the center of the cast-in-place concrete layer is provided with an expansion joint filled with sponges or foams; the center of the bituminous concrete pavement layer is provided with a notch which is filled with expansion elastomers and broken stones and is internally provided with a cover plate; lower expansion bolts are symmetrically arranged around the upper part of the cast-in-place concrete layer; lateral expansion bolts are symmetrically arranged around the inner side of the bituminous concrete pavement layer; and steel bars are arranged between the end parts of the lateral expansion bolts and the lower expansion bolts. The device disclosed by the invention has the advantages of simple structure and reasonable design, and is convenient and rapid in construction; the performance requirements of the expansion joints can be met, special expansion members are not needed to be arranged, and the problem of short service life of other expansion devices under small stroke can be effectively solved; and the device disclosed by the invention has the characteristics of good elasticity and neat and beautiful appearance, and can bear vehicle load.

The invention relates to a method for measuring density of slurry in a desulfurization absorption tower, which comprises the following steps: firstly selecting a low-pressure side pressure sampling point and a high-pressure side pressure sampling point in the vertical direction of an absorption tower body, then leading out sampling pipe sections from the high-pressure side pressure sampling point and the low-pressure side pressure sampling point respectively, next connecting a high-pressure side capillary tube and a low-pressure side capillary tube of a double-flange diaphragm differential pressure transmitter to a sampling pipe section respectively, and finally calculating a density value by a measured value delta P of the double-flange diaphragm differential pressure transmitter according to a formula rho1=(delta P + rho2 gh) / (gh), wherein in the formula, rho1 is the density of the slurry in the absorption tower, rho2 is the density of the filling liquid in the capillary tube, g is gravitational acceleration, and h is the altitude difference between the high-pressure side pressure sampling point and the low-pressure side pressure sampling point. The method can measure more conveniently and accurately, needs no complex operation or measures, can simply maintain corresponding used measuring equipment and devices with low cost, and ensure stable and reliable running of the measuring equipment and the devices.

This invention relates to waste-water treatment process by using batch-type aerobic granular sludge membrane reactor. The procedures are: influent of domestic sewage being fed-in, aeration, intermittent drainage, settlement, drainage and reflux. This invention method makes the sludge in the reactor being of granulated. The whole system proceeds, periodically, aerobic, anaerobic and facultative aerobic condition treatment; so, it can remove carbon-containing organic pollutants, and also nitrogen and phosphorus nutritive elements and the like. This inventive method is used for treatment of urban domestic sewage, with COD removal rate being up to more than 95%, the ammonia-nitrogen being kept less than 1mg / L, total nitrogen and total phosphorus removal rate being more than 90% and 45% respectively. This invention method reduces, obviously, membrane contamination, lowers the speed of reducing rate of membrane-flux by 50%. And the membrane-flux can be recovered to original condition just by hydraulic washing. The inventive method can produce excellent economic benefit and environmental benefit.

The invention discloses a full-automatic greasing and capping machine, relating to a device for adding grease and a dust cap to a bearing. A workbench is fixed on a machine frame; a mounting base is fixed on the workbench; the front part of the mounting base is provided with a material support plate; the upper part of the mounting base is provided with a control device; the left side of the workbench is provided with a material conveyor, and the right side of the workbench is provided with an unacceptable product removing device; according to the processing sequence, two greasing devices, a grease quantity detection device, two capping devices, a dust cap height detection device and a grease equalizer are sequentially arranged on the mounting base from left to right; turning devices are respectively arranged between the two greasing devices and between the two capping devices; and a front reciprocating device and a rear reciprocating device are respectively arranged below the workbench. The full-automatic greasing and capping machine disclosed by the invention integrates the stations and the mounting base into a whole, is high in positioning accuracy and facilitates debugging and installation of a fixture mold; and the total seal shell is convenient for cleaning and maintenance, thus, the invention has the advantages of strong dustproof capacity, low danger coefficient, low failure rate and high product qualification rate.

The invention provides a high-uniformity damping rotating nozzle, and belongs to the technical field of irrigation nozzles. The high-uniformity damping rotating nozzle comprises a nozzle outer shell, a rotating assembly and a water spraying assembly, wherein the rotating assembly and the water spraying assembly are arranged in the nozzle outer shell. The water spraying assembly comprises a guide plate, a spraying plate and a water scattering plate assembly, wherein the guide plate, the spraying plate and the water scattering plate assembly are communicated in sequence. After water passes through an arc passageway on the spraying plate, the spraying plate rotates, water scattering needles on the water scattering plate can block part of water flow sprayed out of the spraying plate, and then water can be scattered within the far and near range of the nozzle. The high-uniformity damping rotating nozzle has the advantages that cleaning and maintenance are convenient, and reliability is high; the rotating speed is stable, extremely-high vibration prevention capacity and wind resistance are achieved, the phenomena that when an existing nozzle conducts spraying, an installed vertical rod shakes and water drops are splashed from the vertical rod of the nozzle are avoided, the irrigation uniformity is higher, and the atomization effect is good during high-pressure spraying; the range is wide, starting pressure is low, and the requirements for different irrigation ranges and different irrigation flow rates can be met; cost is lower, performance is reliable, the service life is long, and the nozzle not only can be applied to the fixed spray irrigation aspect, but also can be applied to the movable spray irrigation aspect.

The invention discloses a plate-shaped heat exchange element as well as the hydrophilous heat exchange device and the manufacturing method of the plate-shaped heat exchange element and relates to a plate-shaped heat exchange or heat transfer element which has a structure that heat transfer area is increased and is especially applicable to a heat exchange device of a closed surface water source heat pump system. The plate-shaped heat exchange element comprises a water inlet, a water outlet and heat exchange plates, wherein each heat exchange plate is used for welding the combined peripheral edges; the plate-shaped heat exchange element is provided with a circulating cavity body communicated with the water inlet and the water outlet; the heat exchange plates are provided with guide flow belt structures and enhanced heat exchange structures which are formed by stamping and drawing; the circulating cavity body is divided into an S-shaped heating medium water channel; the enhanced heat exchange structures form a supporting structure between the heat exchange plates. The plate-shaped heat exchange element has the advantages that a heat exchange flow channel is reasonable in design, short in process and low in water resistance, so that the power consumption of a circulating water pump at the surface water source side of the closed surface water source heat pump system can be obviously saved; high-pressure expansion is replaced by using stamping forming and peripheral-edge welding, the manufacturing process is simplified, the problems of rough deformation and easy scaling on the local surfaces of the heat exchange plates due to high-temperature welding are solved, and due to the same-mold heat exchange plates, the manufacturing cost of a stamping mold can be reduced.

The invention discloses a powder recovery workbench used for metal 3D printing molding. The powder recovery workbench comprises a workbench panel, a powder recovery mechanism, a powder drying mechanism, a powder screening mechanism and a powder recovery bin. Locating holes are evenly formed in the workbench panel. The powder recovery mechanism comprises a powder collection funnel and a negative-pressure powder absorption mechanism. The powder drying mechanism comprises a powder drying bin and a heater. The powder screening mechanism comprises a screening frame, a screening net, a base and a power mechanism used for driving the screening frame to act. An impurity discharge opening and a powder recovery opening are formed in the screening frame, and the powder recovery opening communicates with the powder recovery bin through a powder recovery pipe. A matrix used for laser cladding molding or 3D printing molding can be directly mounted on the powder recovery workbench, powder which is not molten by lasers can be directly recycled through the powder recovery workbench, transfer is not needed, little manual participation is needed, and the labor intensity is small; and the powder recovery efficiency is high, and the powder recovery and utilization rate is increased.

The invention provides an ecological carbon-fiber composite, a preparation method thereof and a sewage treatment reactor containing the ecological carbon-fiber composite. The ecological carbon-fiber composite comprises a core layer which is composed of biologically active carbon fibers with a specific surface area of greater than 1000 m<2> / g and an external layer which is composed of an eyelet fabric of polypropylene fibers, wherein the external layer is wrapped around the core layer. According to the invention, the biologically active carbon fibers with a specific surface area of greater than 1000 m<2> / g are used as the core layer, and the polypropylene fiber eyelet fabric is arranged at the external side of the core layer so as to strengthening the core layer; therefore, the ecological carbon-fiber composite has the advantages of a great specific surface area, reasonable pore size distribution, high adsorptivity and high strength, so the composite is sturdy and durable, is convenient to clean and maintain, does not easily hide sludge, enables replacement frequency to be reduced and has a prolonged service life.

The invention provides a waste gas treatment and heat energy recycling device for a heat-setting machine, comprising a baking oven, a hot-air pipe, a draught fan and a high-temperature purifier which are arranged in an oven, wherein, the hot-air pipe is positioned on the upper part of the baking oven and is provided with an air inlet end; the draught fan is provided with an air draft side and an exhaust end; an air channel is formed between the air inlet end of the hot-air pipe and the exhaust end of the draught fan; an air-collecting box is arranged between an air draft end of the draught fan and the high-temperature purifier; a waste gas heat recycling pipe is arranged in the baking oven and above a heat-setting pipe; and the waste gas heat recycling pipe and the high-temperature purifier are connected through an induced waste gas connection tube. The invention ensures that set waste gas can realize centralized recycling and quick conveying through adding the waste gas heat recycling pipe and the induced waste gas connection tube, and has no waste gas exhausted outside the heat-setting machine. The device does not occupy peripheral space of the heat-setting machine, so the device has the advantages of high efficiency and energy conservation, environmental protection and small occupied space of the baking oven.

The invention provides a novel illuminating system which is convenient in cleaning, and cleaning equipment and a lamplight illuminating structure for the illuminating system which are matched with the system. The illuminating system comprises lamps, a fixing device and cleaning equipment, wherein the fixing device comprises a base level fixing part, lamp installation parts and tracks; the base level fixing part is used for fixing the fixing device together with an installation base level; the lamp installation parts are distributed along the tracks, and are used for fixing the lamps; the lamps are provided with light emitting surfaces from which light rays are emitted; the cleaning equipment are matched with the tracks by moving relatively along the tracks; the cleaning equipment is provided with a track advancing device, a power device and a cleaning piece; the track advancing device is used for attaching the cleaning equipment to the tracks; the power device is used for driving the cleaning equipment to move along the tracks; and the cleaning piece is used for cleaning the light emitting surfaces of the lamps. According to the illuminating system provided by the invention, the cleaning equipment moves on the tracks, and the cleaning piece is used for cleaning the light emitting surfaces of the lamps distributed along the tracks, so that time and labor are saved, and the illuminating system is safe and efficient.

The invention relates to a green glass-ceramic plate made from lead-zinc smelting slag and a manufacturing method thereof. The glass raw material is prepared from the following components in parts by weight: 40 to 60 parts of lead-zinc smelting slag, 26 to 38 parts of quartz, 15 to 24 parts of lithium feldspar, 2 to 4 parts of soda ash, 2 to 3 parts of zinc oxide, 2 to 5 parts of barium carbonate, 1 to 3 parts of borax, 2 to 2.5 parts of chromium oxide, 0 to 0.2 part of copper oxide and 0.04 to 0.2 part of carbon powder. The invention is not only in line with the common glass-ceramic produced by completely adopting industrial materials on the aspect of the performance, but also can realize waste utilization, reduce the environmental pollution, the product cost and the melting temperature of glass, improve the melting speed and the melting furnace efficiency of the glass, decrease the energy consumption and can be widely applied to building decoration materials, especially applied in various building decoration engineering, such as inside and outer walls, floors, pillars, table boards of the building, and the like.

This invention discloses a double-cooling ozone discharge tube for producing ozone. The discharge tube comprises a high-voltage electrode made of metal tube, and a ground electrode. A titanium layer is coated on the high-voltage electrode and the ground electrode. A dielectric layer is used as the inner lining of the ground electrode. A discharge tube assembly is placed at the outer wall of the high-voltage electrode, which forms a sliding concentric circle with the gap convex block supported by the dielectric layer, and has a discharge chamber air gap. The material for the dielectric layer is ceramic, enamel, glaze, glass, or their composite. Compared with the present technique, the discharge tube in this invention has such advantages as simple structure, high ozone generation efficiency, rapid assembly / disassembly, and easy cleaning. The discharge tube can be integrated into large power ozone generator.

A touch button assembly and touch buttons are disclosed. The touch button assembly allows a gaming machine to collect player input through one or more touch buttons. The assembly may comprise a support, touch button hardware, and a cover. The support may be attached to the housing of a gaming machine. The button hardware is supported by the support and comprises one or more touch or proximity sensitive sensors. The cover is a substantially contiguous, planar member located over the button hardware and support. The assembly is easy to clean and maintain, and is aesthetically pleasing.

The invention relates to an aluminum alloy for a subway station ceiling and a preparing method of the aluminum alloy. The aluminum alloy is characterized by comprising chemical components, including by mass percent, 0.45% to 0.6% of Mg, 0.3% to 0.5% of Si, 0.1% to 0.3% of Mn, 0.1% to 0.2% of Cr, 0.1% to 0.3% of Zr, 0.1% to 0.3% of Hf, 0.05% to 0.2% of Ta, 0.05% to 0.15% of Cu, not larger than 0.05% of Zn, not larger than 0.20% of Fe, not larger than 0.05% of Ti, and the balance Al, wherein the single content of other impurity elements is not larger than 0.05%, and the total content of other impurity elements is not larger than 0.15%. The aluminum alloy is obtained through the preparing method of smelting, refining, casting and homogenizing. Through optimizing of alloy components, adjustment is carried out, the trace of Zr, Hf and Ta is added, and the strength, the heat dissipation, corrosion resistance, humidity resistance, fatigue resistance, static electricity resistance, recrystallization resistance capacity and breaking resistance performance of the aluminum alloy can be obviously improved.