7results about How to "Fluid stability" patented technology

The application discloses a resin filter core structure and a water purifier applying the same, and belongs to the technical field of water purification. The water purifier comprises a box body and a filter core assembly. A first cavity is arranged in the box body. The filter core assembly is arranged in the first cavity. The filter core assembly comprises a shell, a center pipe, a second cavity, a resin core layer, a water distributor and a filter layer. The second cavity is arranged in the shell. The center pipe is arranged in the second cavity. The lower end of the center pipe is communicated to the outer bottom wall of the shell. The filter layer is arranged on the upper outer wall of the center pipe. The resin core layer is arranged in the second cavity. The water distributor is arranged on the outer wall of the center pipe around the filter layer. The water inlet direction is changed through the water distributor, so that the water flow can fully flow in the resin core layer, the service life is prolonged, and the purification effect is improved.

This invention provides a self-floating, steplessly shifting water intake device and its usage method. The device includes an intake tower and, sequentially arranged from upstream to downstream, a floating gate slot, a stacked beam slot, an emergency maintenance gate slot, and an arc-shaped working gate slot within the intake tower. The floating gate slot contains a floating gate that can slide up and down along the slot with the water level. The stacked beam slot contains stacked beams. The floating gate forms a U-shaped flow surface, through which surface water flows into the downstream channel. An overhang is located at the bottom of the downstream surface of the floating gate, and the end of the overhang has a water-stopping device that contacts the stacked beams in the downstream stacked beam slot. The stacked beams consist of multiple sections; some stacked beams are placed in the stacked beam slot to block water, while others are stored in a stacked beam gate reservoir. The bridge crane is used to adjust the number of stacked beam sections in the stacked beam slot according to changes in the reservoir water level. This invention enables the intake of surface water with stepless floating gate displacement and adapts to large fluctuations in water level.

The application belongs to the technical field of hydraulic engineering and provides a flow measuring device, which comprises a main box body, a first baffle and a second baffle. The main box body is internally provided with an accommodating space. The main box body is provided with a water injection baffle and a water outlet baffle arranged oppositely. The top of the water outlet baffle is provided with a triangular weir. The first baffle and the second baffle are sequentially and spacedly arranged between the water injection baffle and the water outlet baffle. The first baffle and the second baffle are provided with a first through hole, a second through hole and a third through hole arranged sequentially from bottom to top. The diameters of the first through hole to the third through hole gradually increase. Through the design of the multi-stage baffles and the multi-layer arranged through holes, the baffles can form a flow guiding and rectifying structure, which has the effects of reducing flow velocity, uniformly distributing flow, reducing turbulence, avoiding the accumulation of impurities in front of the weir, keeping the water flow stable after passing through the baffles, avoiding the formation of local vortex or irregular turbulence, reducing the measurement error caused by water flow fluctuation, and improving the water flow measurement precision.

The invention discloses a method for separating rare earth and fluoroaluminum in a high-fluoroaluminum and low-rare-earth-content material, and belongs to the field of rare earth hydrometallurgy. Aiming at the technical problems of poor selectivity and easiness in emulsification when the materials are treated by an existing single extraction system, a five-component synergistic extraction system is adopted, a mixed extraction agent is prepared according to the volume ratio of P204: P507: TBP: sec-octanol: diluent, and after hydrochloric acid pretreatment and ammonia water saponification, three-stage to six-stage counter-current extraction is carried out on the mixed extraction agent and the pretreated material liquid subjected to pH regulation. Rare earth is selectively extracted into an organic phase, fluorine and aluminum are enriched in raffinate, and efficient separation is achieved. And the rare earth-loaded organic phase is subjected to reverse extraction with high-concentration hydrochloric acid to obtain a concentrated rare earth solution, and trace rare earth in raffinate can be recovered through oxalic acid precipitation. Through the synergistic effect of specific components, the separation selectivity is remarkably improved, extraction emulsification is effectively avoided, stable operation of the process is guaranteed, and the method is particularly suitable for efficient treatment of complex high-fluorine-aluminum low-rare-earth materials.

This invention provides a cylindrical overflow surge tank structure for long-distance water transmission pipelines, comprising an inlet mechanism, a pressure regulating mechanism, an outlet mechanism, an overflow mechanism, and a makeup water mechanism. The inlet mechanism includes a main inlet pipe and a surge tank inlet pipe, the latter comprising a horizontal inlet pipe and a vertical inlet pipe connected to each other. The pressure regulating mechanism includes a lower overflow weir and an overflow pool. The outlet mechanism includes an overflow pipe and a main outlet pipe. The main inlet pipe is connected to both the horizontal and vertical inlet pipes; the incoming flow, after entering the horizontal inlet pipe, bends vertically upwards into the vertical inlet pipe. A lower overflow weir is located at the top of the end of the vertical inlet pipe, and an overflow pool is located outside the vertical inlet pipe. An overflow mechanism is located at the top of the overflow pool. The makeup water mechanism is located between the beginning of the horizontal inlet pipe and the end of the overflow pipe. This invention can effectively block the propagation of water hammer waves between pipe sections. By setting up a makeup water device, it can prevent the pipeline from being pulled apart or damaged by air ingress when extreme negative water hammer waves occur.

The present application relates to the field of petrochemical industry and environmental protection technology, and particularly relates to a multi-core pipe parallel type main and auxiliary cavity cyclone oil-gas-water separation system and a separation method. The method comprises obtaining the time of flight of reflected sound waves and the Doppler power spectral density diagram of the cyclone separation main cavity; determining the axial coordinate sequence and the radial coordinate sequence based on the time of flight; determining whether the cyclone intensity of the cyclone separation main cavity is qualified based on the height difference of the cyclone liquid column; in response to the unqualified cyclone intensity, determining the adjustment direction of the gas phase outlet back pressure based on the cyclone gas core ratio; based on the qualified cyclone intensity, determining whether the cyclone load of the cyclone separation auxiliary cavity is up to standard based on the frequency spectrum width value, and in response to the unqualified cyclone load, prolonging the liquid phase separation time of the cyclone separation main cavity; based on the qualified cyclone load, determining whether there is a downward trend of the oil-gas-water separation efficiency, and enabling sound early warning when the oil-gas-water separation efficiency has a downward trend. The present application solves the problem of lag in sensing the state fluctuation of the oil-gas-water mixed liquid flow field.

The utility model discloses a liquid flow velocity measuring device, including water drop shape pipe body, magnetic circuit component and electrode, magnetic circuit component is constituted by I -beam core and the cylindrical coil of winding on the central column among them, water drop shape pipe body is water drop shape structure, and the upper and lower sides of electrode are equipped with the flange. I -beam core is fixed in the inside of pipe body, and electrode is installed in the pipe wall and is located in the magnetic field range. The utility model adopts I -beam core cooperation cylindrical coil and constitutes closed magnetic circuit, can form the even steady magnetic field in the electrode area, and water drop shape pipe body design is constituted by half ellipse and semicircle, and is combined with the flange structure of the upper and lower sides of electrode, can effectively guide fluid steady pass, reduces the eddy current and turbulence generation, makes the flow velocity distribution more even. The utility model realizes high -precision measurement, and compact structure, cost controllable can be widely used in water treatment, chemical industry, energy and other industries to the flow measurement requirement higher production control and trade settlement scene, has higher popularization value.