150results about How to "Improve drainage" patented technology

A pneumatic tire has an asymmetric tread pattern. The width of an outboard shoulder main groove (3) is 3 to 4% of the tread width TW. The width of an inboard shoulder main groove (4) is 5 to 6% of TW. The width of an outboard crown main groove (5) is 6 to 7% of TW. The width of an inboard crown main groove (6) is 6 to 7% of TW. In each of the grooves (4, 5, 6), an outboard groove face's angle θ1 is more than an inboard groove face's angle θ2, wherein θ1 is 13 to 19 degrees, and θ2 is 9 to 14 degrees. In the groove (3), an outboard groove face's angle θ3 is 9 to 14 degrees, and an inboard groove face's angle θ4 is 5 to 8 degrees.

The animal waste collection sheet is planar and is consisted of a top sheet which is liquid permeable, a back sheet which is liquid impermeable and an absorbent sheet disposed between the top sheet and the back sheet. The top sheet has a high fiber density region in a thickness direction thereof, with a fiber density higher than an average fiber density of the top sheet, at least in a part of a side facing the absorbent sheet. The average fiber density is preferably in the range of 0.005 to 0.20 g/cm³, and a fiber density of the high fiber density region is preferably in the range of 0.007 to 0.25 g/cm³.

The invention relates to an oil exploitation technology, in detail a fracturing process for releasing the pollution of fracturing liquid. It solves the problem that fracturing liquid hurts the storing layer in water-power fracturing construction for oil exploitation existing in prior technology. Procedures comprise that ahead fluid is injected into the oil storing layer; when cracks appear on the oil storing layer sand carrying liquid is injected continuously; then replacing liquid or isolating liquid is injected continuously; chlorine dioxide resultant is injected singly in the process mentioned above. Filter cake and concentrated fracturing liquid in ground crack can be eliminated more thoroughly and guiding flow capability of support sands in crack is improved. Permeability and retention can achieve more than 90%.

A fuel cell membrane electrode using polymer ultra-short fiber as water repellent and it's the preparation method, in which the catalyst layer is dopped with polymer ultra-short fiber. The preparation method is that: coat the catalyst pulp containing load-type catalyst, solid polymer electrolyte, polymer ultra short fiber and the solvent on to gas diffusion layer surface to get a gas diffusion layer electrode, hot press this electrode and the proton exchange membrane to prepare the membrane electrode; Or transfer solidified catalyst onto two sides of the proton exchange membrane to prepare the catalyst /membrane central assembly. Advantages : raised water discharge function comparing with grain-like polymer water repellent, having good reaction gas dispersion path, raised structure and catalyst size stability and simple preparation process of membrane electrode.

An artificial honeycomb for use in a beehive and which enables honey to be removed from the honeycomb without removing the honeycomb from the hive, the honeycomb comprising cells and being formed of at least two parts which are moveable relative to each other between a cell formed position where the cells comprise side walls and an end wall to enable bees to fill the cell with honey, and a cell open position where at least some of the said walls have moved apart, whereby honey in the cells can be removed from the honeycomb by movement of the at least two parts to the cell open position.

A pneumatic tire has tread blocks (5) each defined by an equator-side longitudinal groove (3A), a tread-edge-side longitudinal groove (3B), a heel-side transverse groove (4A) and a toe-side transverse groove (4B). The block (5) has an equator-side longitudinal wall surface (8a) having a first radially outer edge (9a) and a first radially inner edge (10a), and a tread-edge-side longitudinal wall surface (8b) having a second radially outer edge (9b) and a second radially inner edge (10b). The angle α1U of the first radially outer edge (9a), the angle α1L of the first radially inner edge (10a), the angle α2U of the second radially outer edge (9b) and the angle α2L of the second radially inner edge (10b), each with respect to the tire circumferential direction, satisfy the following four conditional expressions: (0≦α1L<α1U≦45); (0<α2L<α2U≦45); (α1L<α2L) and (α1U<α2U).

The invention relates to a kitchen sink, in particular to a self-cleaning type water-saving anti-blocking sink. The sink comprises a sink body and a water discharging pipe; a water distributor is serially connected between the sink body and the water discharging pipe; the water distributor comprises a cylindrical shell, a water seal mounted at the upper part of the cylindrical shell, a conical filter net mounted in the center of the lower part of the conical shell, and a power apparatus for driving the conical filter net to rotate; the water discharging pipe is arranged in the bottom center of the cylindrical shell; a scraping plate in contact with the outer wall of the conical filter net is arranged on the inner wall of the cylindrical shell; a residue discharging hole is formed in the upper end part of the scraping plate; the power apparatus comprises a centrifugal pump; a rotary shaft of the centrifugal pump penetrates through the water discharging pipe and is fixed with a rotary shaft of the conical filter net; a tangential hole of the centrifugal pump serves as a water inlet; an axial hole of the centrifugal pump serves as a water outlet and is connected with a tap; a hairbrush in contact with the conical filter net is arranged on the inner side of the conical filter net; and the hairbrush is fixed at the bottom of the cylindrical shell. The sink adopting the technical scheme is good in anti-blocking effect, can be automatically cleaned, and has a water-saving effect.

The present invention is air leading and water draining system for heat insulating waterproof roof and its construction process. The air leading and water draining system includes a reinforced concrete roof slab layer, a plain cement slurry layer, a first leveling cement mortar layer, an elastic waterproof layer, a second leveling cement mortar layer, a heat insulating layer, a rigid waterproof layer, a fine stone concrete layer, a veneer layer, and transverse parapet connected to the lower rain water pipe successively arranged from bottom to top. It features the inclined air leading and water draining pipe passing through the parapet and communicated to the rain water pipe, and no vertical ventilating pipe. The present invention makes it possible for water permeating to the heat insulating layer to flow easily into the rain water pipe so as to avoid leakage.

A modifying additive for preparing the tobacco leaf sheet by paper-making method is prepared through proportionally adding acidic proteinase, composite pectase, composite neutral cellulase and neutral lipase in water, stirring, filtering and taking clear liquid. It can be used to treat tobacco stems for improving the flavouring component in liquid extract and the physical properties of tobacco stem and the looseness of tobacco leaf sheet.

A roofing system for a substantially flat roof structure is provided, including a central panel with a substantially concave surface provided with a through hole at the centre for engaging a drainage system of the flat roof, and a first row of panels assembled around the central panel. The row of panels includes tapered side panels interlocked to the sides of said the central panel and tapered corner panels interlocked with adjacent side panels. Optionally at least one further row of side and corner panels may be assembled around the first row of panels. The side and corner panels are shaped so as to retain a constant slope to direct water away from their outside edges towards the through hole of the central panel. The panels are interlocked using a system with shiplap joints.

A windshield molding which is installable in the space between a windshield and a periphery of a window opening of a vehicle body panel. The windshield molding includes a pair of extruded side molding parts, a pair of extruded corner molding parts, and an extruded upper molding part integral with and extending between the side and corner molding parts. Each of the side molding parts associated with each side edge of the windshield is greater in thickness as compared with the upper end corner molding parts, where a water drain channel is formed. A windshield molding is also provided which drains rainwater smoothly through the rainwater groove provided at necessary sections and having a different depth in the longitudinal direction for better drainage which can be produced simply and continuously as a single molding without the addition of cutting or other processes.

The invention relates to a rubber sole, and provides an anti-skid rubber sole. The anti-skid rubber sole is prepared from the following raw materials: NBR/PVC emulsion co-precipitation alloy, low-melting point polyamide, natural rubber, soluble polymerized styrene-butadiene rubber, brominated butyl rubber, white carbon black, an anti-aging agent, polyethylene glycol, a silane coupling agent, polyethylene wax, diethylene glycol, zinc oxide, stearic acid, insoluble sulfur, a vulcanization accelerator D and a vulcanization accelerator DM. The anti-skid rubber sole is vulcanized and molded in a mold of a space aluminum material, the vulcanizing temperature is 170 DEG C, the pressure is 16.5MPa-17.5MPa, and the vulcanizing time is 210-250s.

The invention relates to a micro-channel heat exchanger. The micro-channel heat exchanger comprises a plurality of flat pipes which are arranged parallelly along a direction vertical to the ventilation direction, and hollow collecting pipes which are arranged at the two ends of each flat pipe, wherein a heat exchange medium channel is formed in each flat pipe; the ends of the flat pipes are inserted into the hollow collecting pipes; the heat exchange medium channels of the flat pipes are communicated with hollow channels of the hollow collecting pipes; a water guide plate or a water guide sheet is arranged between two adjacent flat pipes and provided with a condensed water flow channel; and a ripple fin is arranged between the water guide plate or the water guide sheet and the adjacent flat pipe. The micro-channel heat exchanger can obviously improve the drainage effect. The invention also provides equipment using the micro-channel heat exchanger.

The invention discloses a sidewalk pavement structure for water permeation, water storage and water discharging. The sidewalk pavement structure comprises a sidewalk, a roadway and a rainwater port communicated with a municipal water discharging system and further comprises a transverse water permeation pipe, the sidewalk comprises a water-permeable surface layer, a water-permeable leveling layer, a water-permeable base layer and an inverse filtering cushion which are arranged sequentially from top to bottom, a groove paved with a filling material is formed in the bottom of the inner side of the inverse filtering cushion, and waterproof geotechnical cloth is arranged at the bottom of the inverse filtering cushion, on the left and right sides of the groove and at the bottom of the groove; first kerbs are arranged on two sides of the sidewalk, and the transverse water permeation pipe communicates the groove with the rainwater port. The sidewalk pavement structure has good water permeating, storing and discharging functions, can effectively prevent water accumulation on the surface of the sidewalk and can relieve pressure of the municipal water discharging system under extreme raining conditions to certain extent; rainwater is avoided permeating into roadbeds, so that long-time stability of the roadbeds is guaranteed; water permeability and air permeability of the sidewalk pavement structure can be improved, and urban 'heat island effect' is relieved to certain content.

The intake duct 4 of an internal combustion engine forms an air passage 10 having a bent passage part 10b allowing an air current from an inlet 10a where the outside air flows to bend to be directed toward an outlet 10d. A counter wall 34 forming the bent passage part 10b is opposite to the inlet 10a in the inflow direction A1 of the air from the inlet 10a in plan view. The drip hole 40 for draining the water entering from the inlet 10a to the outside is provided to be positioned between the inlet 10a and the counter wall 34 in a position overlapping the bent passage part 10b in a plan view. In this way, it can improve drain performance after holding down increase in ventilation resistance in draining water entering the intake duct from a drip hole.

The invention discloses an embedded track plate and a track structure comprising the same. The structure comprises the embedded frame track plate, steel tracks, an under-track rubber plate, a filling material, a limiting leveling layer, a base and a track bed base layer, wherein the base is fixed on the track bed base layer; the limiting leveling layer is arranged on the base; the embedded frame track plate is arranged on the limiting leveling layer; the steel tracks are arranged in track bearing grooves of the embedded frame track plate; track gage adjusting screws and steel track compression limiters adjust positions of the steel tracks in the track bearing grooves and fix the steel tracks in the track bearing grooves; the under-track rubber plate is further arranged between the steel tracks and the track bearing grooves; the track bearing grooves are filled with the filling material. The advantage that the track structure can be derived into an on-bridge track structure, a subgrade track structure, a tunnel-inside track structure, a level crossing track structure and a curved track structure according to the difference of using sites is realized.

The invention discloses high-water-permeability concrete water-permeable ground tiles. The high-water-permeability concrete water-permeable ground tiles are prepared from the following raw materials in parts by weight: 120-150 parts of a main material, 2-10 parts of glutinous rice flour, 1-6 parts of gypsum, 1-2 parts of magnesium carbonate, 20-40 parts of regenerated rubber powder, 60-100 parts of blast furnace slag, 1-2 parts of aluminum powder, 6-10 parts of fly ash, 3-8 parts of sepiolite powder, 1-6 parts of mica powder, 4-10 parts of basalt fiber, 2-9 parts of heavy calcium carbonate, 1-4 parts of microcrystalline cellulose, 1-2 parts of polydimethylsiloxane, 1-2 parts of tartaric acid, 1-2 parts of a water-reducing agent, and 100-200 parts of water. A carbon nanotube composite is prepared by adopting a technology comprising the following steps of uniformly mixing urea, formaldehyde and water, adjusting the pH value of the system to 8.6-8.9, and carrying out heating with stirring; adding lecithin, carbon nanotubes and N,N-dimethyl-formamide, and carrying out uniform stirring; and then, adding polypropylene, and carrying out stirring so as to obtain the carbon nanotube composite.

The invention provides a drip-imitating tube-type demister, which is characterized by comprising at least two layers of parallel rows of tubes, wherein the rows of tubes are formed by tubes which are uniformly arrayed, the two ends of the rows of tubes are respectively supported on a plate, and the direction of flue gas flow is vertical to the direction of the short axis of the inner tubes of therow of tubes. The invention also provides a demister device, which is characterized by comprising the drip-imitating tube-type demister, wherein the drip-imitating tube-type demister is arranged at aflue gas desulfurization tower or the upstream of a horizontal flue, the demister is arranged at the downstream of the flue gas desulfurization tower, or a vane demister is arranged at the downstreamof the horizontal flue. The invention has the advantages that the demister reduces partial flow resistance, the area for blocking mist drop can be enlarged, demisting effect is improved, and scale isnot easy to form.

The invention discloses a method for ecologically improving saline-alkali land of Yellow River irrigated areas by earthworm. The method comprises the following steps of S1, selection of earthworm variety: because the earthworm varieties are more, and the bearing capabilities of different earthworm varieties on pollution degree are different, selecting the proper earthworm variety according to soil conditions; S2, artificial culture of earthworm: artificially culturing the earthworm because of lower propagation speed due to the limitations of temperature, soil humidity and environment on wild earthworm; S4, adding an earthworm culture feed by using 10 days as one cycle, and stirring soil by using one month as one cycle; adjusting the culture density of earthworm by using three months as one cycle. The method has the advantages that the soil is loosened according to the soil eating characteristics of earthworm, and the air ventilating property and water drainage function of soil are improved; the earthworm drags organic matters into a dug cavity to accelerate the decomposing of soil, and the amount of nutrients required by plant growth is increased; the cost is low, the soil improving effect is good, the huge profit is realized by the additional harvesting of earthworm, and the ecological circulating effect is obvious.

The invention relates to a water permeable type large-hole cement stabilized macadam pavement base layer material and a preparation method thereof. Raw materials comprise graded gravel, cement and water. The grading range of the graded gravel meets the requirements that 0.075 mm meshes correspond to the mass passing rate from 0% to 3%, 0.6 mm meshes correspond to the mass passing rate from 0%to 6%, 2.36 mm meshes correspond to the mass passing rate from 0% to 12%, 4.75 mm meshes correspond to the mass passing rate from 3% to 18%, 9.5 mm meshes correspond to the mass passing rate from 16% to 36%, 19 mm meshes correspond to the mass passing rate from 60% to 85%, 26.5 mm meshes correspond to the mass passing rate from 80% to 100%, 31.5 mm meshes correspond to the mass passing rate of 100%, the flat and elongated particle content is smaller than or equal to 18%, and the crushing value is smaller than or equal to 22%. The preparation method is simple, the grading composition range of the graded gravel is improved, under the condition that the bearing force of the graded gravel is guaranteed, the porosity of the structure is increased, on one hand, the water drainage performance of a pavement is improved, on the other hand, the reflection cracks of the asphalt concrete pavement are reduced, the maintenance cost of the pavement is reduced, and social and economic benefits are improved.

The invention discloses a sponge type road paving structure for a garden and a construction method of the sponge type road paving structure, and relates to the technical field of garden roads. The sponge type road paving structure for the garden comprises a water permeable brick layer, a water permeable cushion layer, a leveling layer, a fixed grid layer, a base layer and a cushion layer which aresequentially arranged from top to bottom. Water collecting holes are formed in the leveling layer, and fiber clusters are arranged in the water collecting holes; a water collecting pipe is arranged on the fixed grid layer, and a water collecting tank is arranged on the base layer; the water collecting pipe is in communication connection with the water collecting tank, and a filter screen is obliquely and fixedly arranged in the water collecting tank; the water collecting tank is connected with a recovery pipe, and the recovery pipe is connected with a recovery tank; the recovery tank is connected with a ground spray head, and an unloading hole is formed in a side of the water collecting tank; the base layer is provided with an underground urban drainage pipeline, and the underground urbandrainage pipeline is connected with the unloading hole through an unloading pipe; an unloading flashboard assembly is arranged on the water collecting tank; and a structural layer of the road of thegarden is modified, and has functions of improving water permeability, water drainage and recycling of the road of the garden.

The invention discloses a method for producing a rice seedling cultivation matrix through earthworm conversion of cow dung; the method comprises the steps: after the cow dung is dewatered, adding nitrogen, phosphorus and potassium and earthworm baits, blending to prepare an earthworm culture base material, carrying out earthworm culture, converting into vermicompost, and then producing the rice seedling cultivation matrix with the vermicompost. The conversion process of the cow dung is simple and green and environmentally friendly; the earthworm culture base material is prepared by using the cow dung, the reproductive rate of the earthworms is increased, besides, continuous pile-turning in a process of fermentation preparation of an organic fertilizer is avoided, and manpower is saved; the vermicompost formed after conversion is used for preparation of the rice seedling cultivation matrix, and can effectively improve the rice cultivation effect.

The invention discloses a rice seedling cultivating medium prepared from cow dung. The rice seedling cultivating medium comprises the following components in parts by weight: 60-65 parts of wormcast, 20-25 parts of activated sludge, 4-5 parts of rice or maize straw particles, 1-2 parts of vermiculite and 1-2 parts of perlite. The rice seedling cultivating medium effectively utilizes cow dung and agricultural wastes, thereby being environment-friendly and low in cost, and the prepared medium is good in rice seedling cultivating effect.

The invention discloses a clothes hanger with the clothes folding function. The clothes hanger with the clothes folding function comprises an upper supporting box, a lower clothes hanger body, a clothes folding device and a clothes folding controller. Thus, the problems that an existing clothes hanger is singular in function and poor in airing effect are solved, and the clothes hanger with the clothes folding function can automatically fold aired clothes with a clothes folding frame. Meanwhile, air inlet and outlet ports formed in two side clothes hanger bodies are used for feeding air to the clothes in an airing zone to facilitate drying, and the aired clothes in the airing zone can be shaken in the airing process through the air inlet and outlet ports, so that the water expelling performance of the clothes is improved, the airing and neatening time is shortened, and the operating cost is reduced.