91 results about "Riffle" patented technology

An aggregate material separating device includes a frame with a shaker mechanism. A trough is disposed on the frame and coupled to the shaker mechanism by a shaker spring. A hopper is disposed at an end of the trough and can receive a load of aggregate material. A hopper wash line is disposed adjacent the loading hopper to irrigate the aggregate material in the hopper forming a slurry. A brush and a backwash spigot form a standing wave in the trough to slow slurry movement from through the trough in order to provide additional settling time for the slurry. A mineral separation bed is disposed along a bottom and side of the trough. The mineral separation bed has a plurality of substantially longitudinal riffles that can be sized, shaped and oriented to capture minerals of a predetermined specific gravity from the slurry as the shaker shakes the trough.

A system and method for restoring wetland habitats and providing a platform on which indigenous and transplanted plant species can thrive. Water from a source, such as, stormwater run-off is captured and filtered through a combination of sand berms and riffle weirs to a series of aquatic beds, thus creating nutrient-rich environment.

A construction method for a river beach pool ecological purification system relates to a river ecological repairing technology. The technical scheme is that a crooked river channel is adopted as a construction area, one section in the construction area is a river section with the river bend central angle as 90-160 degrees and is provided with more than two bent portions, and the linear length of the construction area is 5-7 times as large as the average width of a main river channel at the river section. The method is characterized in that bend tops of the turning positions at the upper end and the lower end of the river channel in the construction area are dug for 50cm-2m downwards to build a deep pool, earthwork obtained through digging of the deep pool is used for constructing a shallow beach at the center of the river channel of a straight section between the two bent portions of the river channel in the construction area and on the side close to a convex bank at the turning positions of the river channel in the construction area, the shallow beach is 10cm-50cm higher than the original river bottom to form a river island or a river bank beach, large rocks with the specification of 30-80cm are piled on the upstream face of the constructed shallow beach, and a fish channel with the recessed depth as 20-50cm is constructed at the center of the river channel at the downstream of the constructed river island. The method is used for pollution regulation and ecological repairing of rivers.

A method of and an apparatus for operating a pulverized coal-fired boiler system, which includes at least one coal pulverizer in flow connection with at least two burners disposed on a boiler enclosure by a coal feed system having a coal pipe junction with a riffle enclosure including a plurality of parallel partition walls forming multiple flow channels from an upstream coal pipe to each of at least two downstream coal pipes and a plurality of individually pivotable vanes upstream of the plurality of partition walls, and controlling the distribution of coal between the downstream pipes by pivoting at least one of the vanes. Preferably a coal flow rate is monitored in the downstream coal pipes and at least one of the vanes is pivoted in response to a measured distribution of the coal flow rate.

A regenerative stormwater conveyance (RSC) system for treating and dispersing stormwater runoff is disclosed which includes an upstream entry point where water enters the system and an entry pool downstream from the entry point that collects water from the entry point. The RSC system includes one or more shallow aquatic beds that receive water from the entry pool in a serial manner and each of which includes a filtration structure for filtering water from the aquatic bed. Riffle weir grade control structures are positioned between the aquatic beds and transition water overflowing from each upstream aquatic bed to a downstream aquatic bed. Accordingly, collected stormwater runoff traverses the series of aquatic beds and riffle weir grading structures and is treated and safely detained, thus, conveying stormwater to groundwater through infiltration.

The invention relates to a method for improving water quality of a steep-slope river by drop-aeration. The invention comprises the following steps: driving wood piles at two sides of a river channel, backfilling a mixture of crushed stones and soil into a riverbed between a revetment and the piles, covering vegetation to form a plant platform, pouring a trapezoid concrete pier across the river channel to form a overflow weir, and stacking block stones on the overflow weir, wherein the block stones are divided into two sides; the side with higher block stones has small gaps, and the side with lower block stones has large gaps. The invention solves the defects that existing river treatment method results in the loss of deep pools and shoals in natural rivers; primary producers such as various phytoplankton and zooplankton can not reproduce; and benthic and large animals which eat them can not inhabit the river. The invention has low cost, and good permeability, can provide aquatic animals and plants with habitat space, can form a multi-flow changing zone, a multi-organism growing zone, and a multi-fish hideout, has good drop-aeration effect, and can reduce soil loss.

The invention relates to a landscape water body water quality purification system, which comprises a fungi bed, a riffle and a bottom mud layer which are arranged in a landscape water body as well as aquatic plants planted in the bottom mud layer and aquatic animals growing in the purification system. The landscape water body water quality purification system has the characteristics of aesthetic property, environment protection and naturality, and can carry out effective treatment to a landscape water body.

The invention discloses a routing table water discharging system in a construction period of an expressway reconstruction and extension project. The routing table water discharging system comprises a temporary water bar, new embankment surface temporary water discharging tanks, a new embankment surface cross slope and a new embankment side ditch. At first, the temporary water bar with the height of 0.1m is built along the outer side of an old embankment curb; old embankment riffle tanks are connected at an opening of the temporary water bar; the lower end of each old embankment tank is jointed with the corresponding new embankment surface temporary discharging tank; and the new embankment side ditch is connected with the new embankment surface temporary discharging tanks. With the adoption of the construction period routing table water discharging system provided by the invention, water on the surface of an old road, water on a slope of an old embankment and water on the surface of a new embankment can be effectively excluded from a roadbed range, so as to avoid the damages of roadbed erosion, water damage and the like caused by unsmooth water discharging during the construction period of the expressway reconstruction and extension project. Therefore, the quality of expressway reconstruction and extension construction is ensured; and the routing table discharging system has the advantages of being simple in implementation, low in cost and convenient in dismounting.

There is disclosed a method and apparatus for separating plastics from compost material. In an embodiment, the method comprises: providing an inclined trough having a feed entry at a top end and a materials discharge end at a bottom end, the inclined trough including a plurality of riffles positioned substantially perpendicularly to a direction of flow of compost material down the inclined trough; inducing a vibration in the inclined trough to induce a prolonged period of hindered unsettling in the compost material; providing a longitudinal dam to at least one side of the inclined trough; and generating an air flow over a substantial length of the inclined trough perpendicular to the direction of flow of compost material down the inclined trough, thereby to blow plastics separated from the compost material over the longitudinal dam.

The embodiment of the invention discloses a coal sample preparing system. The coal sample preparing system comprises a control unit, a manual feeding unit, a primary crushing and splitting unit, a mechanically-collecting, feeding and splitting unit, a secondary crushing and splitting unit, a drying unit, a first riffle, a crushing unit, a second riffle, a first packaging and code-printing unit and a second packaging and code-printing unit. The coal sample preparing system can reduce the intervention degree of manual sample preparation, and all equipment runs orderly under the control action of the control unit, so that the labor intensity of workers is reduced.

A riffle distributor assembly for influencing the travel properties of a material feed stream 42 moving between a pulverizer 14 and a furnace 12 is part of a feed path 36 having one duct 44A having a branch entry 66A and another branch duct 44C having a branch entry 66C both downstream of upstream passage peripheries UPZ defined between adjacent intake vanes 114 through which the feed stream of the material 42 travels in two segregated portions. A motor drive assembly 58 moves the intake vanes 114 relative to the incoming flow reference axis IFA, whereupon intake areas defined between adjacent intake vanes 114 moves relative to the incoming flow reference axis IFA such that the travel properties of the one portion of material in the one branch duct 44A are different than its travel properties before the movement of intake areas defined between adjacent intake vanes 114.

An adapter installs on the head of a conventional tripod, bipod, monopod, or other type of stand. The adapter threads directly on the threaded bolt of the stand or uses a busing to thread onto the smaller bolt. Once installed, the top opening of the adapter can receive the quick-connect stem of an accessory, such as a shooting rest, riffle rest, swivel ballhead camera or scope mount, or other accessory.

The road-towed heavy-load ferry may be produced in larger or smaller versions using the same design. Its basic embodiment can transport afloat loads exceeding 16 metric tons (17.6 tons) including its tow vehicle. The ferry essentially comprises three longitudinal hulls. Outboard hulls (12) pivot outward and inward to rest atop central hull (10). Thereby, the ferry is reduced to a width suitable for towing on public roads. Equipment for road towing includes telescoping towing tongue (32), and pneumatic-tired wheels (28) which remain intact afloat. Winch (40) enables kedging across shoal water or ground. The wheels extend below the deployed outboard hulls to assist in kedging by reducing friction, suction, and risk of hull damage. A water-ballast system counterbalances on-board loads and otherwise improves stability in adverse winds, waves, and currents. Hinged gunwales provide additional freeboard.

The invention provides an aeolian sand subgrade construction method. The method comprises the following steps that surveying and setting out are conducted; a base layer is laid; padding is loaded and unloaded; a reinforcing layer is laid; a reinforcing layer is laid on the surface of aeolian sand, wherein the reinforcing layer comprises limestone, polypropylene fibers, loose filling and the balance coal ash; tilling is conducted, specifically, watering is conducted on the reinforcing layer, and tilling is conducted on a subgrade multiple times in the length direction; riffle watering is conducted; rolling compaction is conducted through a bulldozer; rolling compaction is conducted through a road roller; compaction detection is conducted, specifically, the compaction coefficient Kof the compacted aeolian sand is detected in a sand filling mode or a water filling mode; and the step that padding is loaded and unloading to the step that compaction detection is conducted are conducted repeatedly until the subgrade reaches a design elevation, and construction is completed. According to the aeolian sand subgrade construction method provided by the invention, the reinforcing layer is laid on the aeolian sand, the reasonable rolling compaction mode is adopted, the strength of the vibrated and compacted subgrade meets design requirements, the compressive strength is high, the failure strain resistance and tension resistance of the subgrade are greatly improved, and the stability of the subgrade is improved.

The invention relates to a method of leading silt in the Yellow River to fill reclamation coal mining subsidence land, and belongs to the technical field of mine environment protection. The method comprises confirming distributing characteristics of time and space and the amount of required silt of the coal mining subsidence land to be filled through methods of remote-sensing images, mining subsidence prediction and field investigation, selecting silt-taking points and silt-taking equipment according to the river regime of the Yellow River, a riffle area distributing condition and the positions of subsidence regions, conveying silt through pipelines composed of a main pipe and branch pipes, setting up a relaying booster pump station, guaranteeing long-distance conveying of the silt, taking reclamation steps such as direct surface soil stripping, stripping after drainage and direct filling against regions to be filled, then conveying silt to fill the regions to be filled, timely draining in the filling process to accelerate silt sediment, covering filled silt with peripheral stripping soil or covering the filled silt with soil dressing, and forming filling reclamation land with high productivity.

The invention discloses a coastal shallow wetland construction method for hard landing river routes. The method comprises the steps that a site is selected on the two sides of a hard landing river route, poles are struck on the selected site, so that the pole and the river coast form a wetland unit, rock blocks are piled on one side of the river route near the struck poles, combined fillings are laid on the inner side of the bed body of the wetland unit, wetland plants are planted on the laid combined fillings, and the coastal shallow wetland is constructed. According to the construction method, the characteristics of large amount of microorganisms, dense biofilm, strong water treatment ability and strong adaptability of the combined fillings are utilized, an optimized combination of the wetland plants is adopted, the entrapment ability of the wetland to pollutants is strengthened, the purification effect of the nitrogen and phosphorus in water is increased, so that the overall biological system operates highly efficiently to finally form a stabilized and sustainably usable system, and the river water purification ability of the system is increased.

The invention discloses a method for determining a bituminous coal caking index. The method comprises a step of preparing a test coal sample, and a test step after the test coal sample is mixed with special blind coal, wherein the step of preparing the test coal sample comprises the following processes: screening by adopting a circular screen of which the aperture is 3mm after the tested bituminous coal is crushed, further crushing articles on the screen of which the aperture is 3mm until all articles pass through the screen; splitting the articles passing through the screen by adopting a riffle, and splitting out the bituminous coal which is not smaller than 100g; absorbing scrap iron in the bituminous coal split by adopting a magnet; crushing the bituminous coal after the scrap iron is removed, wherein the crushing time does not exceed 30 seconds; screening the bituminous coal which is crushed by a square hole screen of which the aperture is 0.2mm, and further crushing the articles which do not pass through the square hole screen of which the aperture is 0.2mm until all articles pass through the screen. Thus, the accuracy and the repeatability of determining the coal sample caking index are improved.

The invention relates to a yam harvesting and planting dual-purpose machine. The yam harvesting and planting dual-purpose machine is provided with a machine frame, wherein the machine frame is provided with a hydraulic oil cylinder; a vertical frame on the rear part is provided with a sliding sleeve; a work system is arranged in the machine frame; a speed changing box group is arranged on the upper part of the work system; a drill stem is in transmission connection with the speed changing box group through a drill stem fixing disk; a riffle splitter is in transmission connection with a speed changing box chain; one side of the speed changing box group is provided with a belt pulley and is in transmission connection with a driving wheel belt on a diesel engine; the upper part of the speed changing box group is provided with a driving sprocket group and a driven sprocket group which are in transmission connection with each other through a chain correspondingly; the speed changing box group and the whole work system are fixedly connected with the sliding sleeve; the hydraulic oil cylinder and the machine frame are provided with pulley blocks; and the pulley blocks are connected with the speed changing box group and the hydraulic oil cylinder through wire ropes respectively. The yam harvesting and planting dual-purpose machine uniformly loosens soil, finely crushes soil particles, facilitates the growth of yams, saves labor when driven, straightly walks when loosening the soil, can perform grooving operation at the same time so as to ensure planting alignment of the yams, facilitates mechanical harvest and has high harvest efficiency.

The invention relates to a magic square number fake prevention method and system. Its steps are as follows: generate an exclusive number for each commodity; generate a magic square over seven ranks for each commodity at random, the magic square is divided into two complement lacuna magic squaresú¿M1,M2ú® by passing random riffle matrix whose element is 0 or 1 and true or false check vector V2 is orderly composed by numbers in lacuna magic squares M1 and M2 and memorized into fake prevent data center; Riffle matrix is converted into tens digits as fake prevent code of the commodity; label containing commodity number and fake prevent code is made for commodity and covers the fake prevent code; through query code inputting equipment, user inputs commodity and fake prevent code into true or false check equipment to recover magic square, if it can be recovered and it is the first query, the commodity is true, or it is false. Characters of the invention are that its coding arithmetic can be disclosed, security is high and it is easy to implement.

The present invention relates to amusement equipment, and is especially the shuffling device of automatic playing card machine. The shuffling device has inside the shuffling room one card feeding mechanism, one card shifting mechanism, one card guiding mechanism and one driving mechanism, and the driving mechanism is connected to the card feeding mechanism, the card shifting mechanism and the card guiding mechanism. The shuffling device in the said technological scheme is superior to available technology and makes the automatic playing card machine possess high marketability.

The invention discloses a compound submerged dam used for renovating a mountain river curve shoal. The compound submerged dam is arranged on an original riverbed, distributed along the river width, and located at the upstream of a concave bank side quirk. The compound submerged dam is characterized in that the dam top plane of the compound submerged dam is composed of a dam top plane body A and a dam top plane body B which are in slope connection, the dam top plane body A is close to the curve concave bank side, the dam top plane body B is located at a planned channel, the elevation of the dam top plane body B is the difference obtained by subtracting the channel maintenance water depth H from the channel segment designed water level Z, and the elevation of the dam top plane body A is greater than that of the dam top plane body B. According to the submerged dam used for renovating the mountain river curve shoal, cross-section flow velocity distribution of a project channel segment is regulated through the two dam top plane bodies of different heights, bend-rushing currents are relieved, the erosion strength of a channel shallow area is improved, and therefore the navigation flow condition of the curve channel segment is obviously improved; and the compound submerged dam does not change the watercourse width and has the characteristics of small project amount and little interference to navigation in the construction period.

The modular portable sluice box is constructed from a plurality of smaller sluice box modules. Each of the sluice box modules includes a lower wall having a pair of longitudinally opposed ends and a pair of laterally opposed ends. A plurality of riffles are formed on an upper surface of the lower wall. A pair of sidewalls are secured to the pair of laterally opposed ends of the lower wall, respectively, and project upward therefrom. One of the sluice box modules may be releasably connected to both a longitudinally adjacent sluice box module, and also to a laterally adjacent sluice box module.