38results about How to "Eliminate buildup" patented technology

Filtration systems (40) utilize a pre-treatment method to cause scale formation to occur on particles (94) in the fluid stream (96) rather than on the filter surface and may also destroy microorganisms in the fluid stream. More specifically, but not limited to, a filtration device can be a filtration membrane, such as spiral wound filtration membrane (60), that utilizes an open feed spacer (80), such for example an embossed or printed pattern on the membrane, to create a thin feed spacer channel which replaces a conventional feed spacer mesh material. System (40) further utilizes a treatment device (54) to enable a pulsed power, magnetic, electro-magnetic, electro-static, or hydrodynamic fluid treatment scheme to condition particles in the fluid stream (96) such that scale forming elements precipitate (94) on to the particles in the fluid stream rather than on the filtration surfaces.

Methods and devices for negating scale buildups on interior surfaces of a sliding sleeve valve housing above the flow tube. In some aspects, a wiper member provides additional clearance between the flow tube and housing to compensate for scale buildup. In other aspects, the interior surface of the valve housing is provided with a sleeve that is disposed between the interior surface of the valve housing and the general flowbore passing through the valve housing to protect the interior surface against scale buildup.

The invention provides a U+I type ventilation system for a work surface of top coal caving, which is an improvement of the arrangement of the U type, the U+L type and the E type or B type laneways and the ventilation systems in the prior art. An air intake way and an air return way of the work surface of top coal caving are arranged along a bottom board of a coal bed, and a regulation air door is arranged on the part of the air return way close to a big air return lane to control the reasonable ventilating parameter of the U+I type ventilating system. The invention is mainly characterized in that air exhausting lanes of top boards are arranged in parallel along the air return way with the parallel outward-staggered distance of 0 m to 5 m from the air return way to form the U+I type ventilating system of a one-intake and two-return mode. The invention fundamentally solves the problem of the accumulation of gas and coal dust on the upper section, the upper spatial angle and the gob area of the work surface of top coal caving, in particular the problem of the accumulation of the gas and the coal dust of the upper space of the upper gob area, provides a safe and high-effect ventilating system, and creates an excellent mechanical environment for realizing the exploitation of the top coal caving of small coal pillars and increasing the recovery rate of coal.

A snow and ice melting device adapted to rest on a roof; having a flat plate with a series of channels therethrough containing a heating element to heat the flat plate and melt the ice and snow on the roof.

A liquid coating is formed on a substrate by electrostatically spraying drops of the liquid onto a liquid-wetted conductive transfer surface and transferring a portion of the thus-applied liquid from the transfer surface to the substrate. Optionally, one or more nip rolls force the substrate against the transfer surface, thereby decreasing the time required for the drops to spread and coalesce into the coating. Preferably, the coating is passed through an improvement station comprising two or more pick-and-place devices that improve the uniformity of the coating. The coating can be transferred from the conductive transfer surface to a second transfer surface and thence to the substrate. Insulative substrates such as plastic films can be coated without requiring substrate pre-charging or post-coating neutralization. Porous substrates such as woven and nonwoven webs can be coated without substantial penetration of the coating into or through the substrate pores.

A method of washing particulate laden material in a washer includes moving the particulate laden material from the intake of the washer to the discharge of the washer and through multiple modules or sectors. Liquid can be counter flowed in the washer interior along a flow path that is generally opposite the direction of travel of the particulate laden material. A specially configured recirculation/filtration arrangement removes a majority of particulate and organic matter from the washing fluid.

The invention provides a double-driving roller type vertical mill, which comprises a vertical mill barrel body, wherein a powder selection machine, an inner ash hopper and an abrasive disk are arranged in sequence from top to bottom in the inner cavity of the vertical mill barrel body; the bottom of the abrasive disk is installed and fixed on the output supporting connection disk of a weight carrying supporting barrel body; one end of each transmission grinding roller mechanism is positioned in the vertical mill barrel body and is evenly distributed above the circumference of the abrasive disk; the outer surface of the output supporting connection disk is provided with a connecting flange; a connecting flange is locked and connected with a large tooth ring through a plurality of bolts; thelarge tooth ring drives the output supporting connection disk to rotate through a plurality of vertical heavy load speed reduction device; each transmission grinding roller mechanism comprises a loading hydraulic oil cylinder, a supporting seat, a rocker arm and a grinding roller component; and the vertical mill barrel body is provided with an annular air duct hole which communicates with a material discharging annular channel. By use of the double-driving roller type vertical mill disclosed by the invention, materials enter a powder grinding gap in a uniform way, powder grinding efficiency is improved, and operation stability is high.

The mortar mixer paddle assembly includes a rectilinear shaft having a centrally registered longitudinal axis, a tow-end and an engine-end axially opposed from the tow-end, and a plurality of rectilinear paddle arms radially extending outwardly from the centrally registered longitudinal axis. A mechanism for entraining air into the mortar mixture and along the rectilinear shaft inside the existing polyethylene drum is provided. A mechanism for horizontally reciprocating a mortar mixture slurry along a bi-directional linear travel path parallel to the centrally registered longitudinal axis of the rectilinear shaft is provided. A mechanism for radially redirecting slow-moving mortar mixture slurry, traveling along the rectilinear shaft, upwards into faster moving arcuate travel paths rotating about the rectilinear shaft thus eliminating mortar mixture slurry build-up on the rectilinear shaft and the rectilinear paddle arms is provided.

A lubricant formulation which is effective to remove or prevent carbon deposits in internal combustion engines has a solvency as defined by aniline point from about 20 to about 115, a volatility (as measured by NOACK) of less than 15%, an oxidative stability (as measured by PDSC) of above 40 minutes and a base oil viscosity of above 2 and below 10 cSt. The lubricant formulation can be formed from a blend of Group III, IV and V lubricants, in particularly polyalphaolefins, alkylated naphthalenes and polar Group V base stocks such as polyol esters. The carbon deposits can be removed from the engine piston by simply running the engine with the lubricant for one required cycle, or can be used continuously in the engine to prevent buildup.

The invention discloses a method for reducing the temperature of a cable tunnel. The method comprises at least the following steps: step 1: a ventilation system is arranged in the cable tunnel and the ventilation system at least comprises a blast blower, an exhauster and a control system; step two: the control system obtains and computes the temperature difference inside and outside the cable tunnel; and step 3: when the internal and external temperature difference in the step 2 is greater than the first set value, the control system starts the blast blower and the exhauster so as to exhaust the heat in the cable tunnel. In the invention, the ventilation system arranged in the cable tunnel is utilized to set different ventilation time intervals and different ventilation strategies, the safety of the cable tunnel is ensured and the temperature of the cable tunnel is reduced at low cost.

The invention discloses a method for deeply removing phosphorus in water by using calcined limonite. The method is characterized by comprising the steps of calcining limonite particulates with the particle sizes of 0.5-3mm at the temperature of 250-500 DEG C to obtain nanometer structured calcined limonite particulates with hematite as a main physical phase, filling a water treatment tank for deeply removing phosphorus with the nanometer structured calcined limonite particulates, and then, treating sewage through enabling the sewage to flow through the water treatment tank for deeply removing phosphorus in a filtering way of keeping hydraulic retention time within 0.5-2 hours, wherein the concentration of phosphorus in the treated effluent is smaller than 0.1mg/L; and enabling the adsorbed and saturated limonite particulates to sequentially pass through a NaOH water solution and a hydrochloric acid solution to soak and regenerate. The calcined limonite particulates provided in the method have an efficient specific adsorption effect on a trace of phosphorus in water, the concentration of phosphorus in the effluent can reach the standard of a second-class ground water body, and the effective period of adsorption operation can exceed four years.

The invention discloses a sulfur-based autotrophic microorganism nitrogen removal material as well as a preparation method and an application method thereof. The autotrophic nitrogen removal material is a particulate matter obtained by mixing a sulfur-containing raw material with lime powder and then carrying out melting, forming and surface carbonation. The autotrophic nitrogen removal material disclosed by the invention is used as a filler of an anaerobic biological filter to construct a deep anaerobic biological filter bed, the nitrogen content of 25mg/L nitrate and nitrite can be reduced to be less than 5mg/L under the conditions that the hydraulic retention time is 40-60min at a proper temperature, the material disclosed by the invention is used for replacing an organic matter carbon source such as sodium acetate for nitrogen removal by denitrification, and the nitrogen removal cost is saved by more than 50%.

The invention discloses an insulator surface charge rapid dissipation device and method based on X-rays. The method comprises the following steps 1, pre-installing an X-ray source around an insulatorof a gas insulated transmission line; and 2, periodically irradiating the surface of the insulator by adopting X-rays according to operation experience so as to eliminate accumulated charges. According to the invention, the device is flexible in design, and can adjust the radiation quantity, radiance, radiation time and other parameters of X-rays according to the operation voltage of GIL, the sizeof the insulator, the gas type and the surface charge accumulation condition, so that the accumulated surface charge can be reduced as much as possible; the operation is simple, wherein during working, only an X-ray source pre-mounted at the periphery of the GIL needs to be turned on to irradiate the surface of the insulator with accumulated charges for a certain period of time, so that the accumulated surface charges can be reduced; and the cost is low, wherein the existing GIL structure can effectively shield the influence of X-rays on the surrounding environment, so that an additional radiation protection problem is not introduced.

The invention discloses a power generator with an auxiliary air cooling effect. The power generator comprises auxiliary air channels. Air inlets of the auxiliary air channels are formed in covering parts, and the auxiliary air channels pass through gaps among an engine, a power generator body and the covering parts. The power generator has the advantages that the power generator is provided with auxiliary cooling air channel structures, the auxiliary cooling air channels can be used with main cooling air channels, preliminary cooling and heat-insulation effects can be realized, heat accumulation in a case can be initiatively eliminated, special heat-insulation processing on radiating positions can be omitted, accordingly, the integral structure of the power generator can be simplified, and the service cost can be saved; the structure of the power generator is further simplified, and accordingly merits of flexibility, mobility and the like of the small power generator can be exerted.

The invention discloses a carburizing method suitable for an instillation type gas carburizing furnace, and belongs to the technical field of metal material heat treatment. According to the stage type carburizing method, the carburizing layer depth is divided, the heat preservation time is calculated section by section, and the total carburizing heat preservation time is obtained through accumulation, so that the carburizing depth accuracy can be achieved, and the carburizing layer depth uniformity is ensured; and meanwhile, carbon black accumulation and decarburization phenomena on the surface of the carburized product are avoided.

An interconnect structure that may reduce or eliminate stress induced voids is provided. In an embodiment, a via is formed below a conductive line to provide an electrical connection to an underlying conductive region. The conductive line includes a widened region above the via. The widened region serves to reduce or eliminate stress induced voids between the via and the underlying conductive region. In another embodiment, one or more redundant lines are formed extending from a conductive region, such as a contact pad, such that the redundant line does not electrically couple the conductive region to an underlying conductive region. In a preferred embodiment, the redundant lines extend from a conductive region on a side adjacent to a side having a conductive line coupled to a via.