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154results about How to "Exempt from replacement" patented technology

Gas-liquid blending and stirring device of sewage-sludge complete mixing type anaerobic fermentation tank and treatment method thereof

The invention discloses a gas-liquid blending and stirring device of a sewage-sludge complete mixing type anaerobic fermentation tank and a treatment method thereof, wherein the upper end of an anaerobic fermentation tank is connected with a trapezoidal tank cover, and the lower end thereof is connected with an inverted triangular tank bottom, the top left side of the anaerobic fermentation tank is connected with a safety valve, the cavity of the anaerobic fermentation tank is connected with a gas lifting flow guide device, and the lower end of the gas lifting flow guide device is connected with a gas collection and flow guide bell mouth; a gas-liquid blending device is arranged below the liquid level of the anaerobic fermentation tank, a circular stirring pump and a primary liquid feeding pump are installed on the ground at the outer side of the anaerobic fermentation tank, the outlets of the circular stirring pump and the primary liquid feeding pump are connected with the gas-liquid blending device, the inlet of the circular stirring pump is connected with one side of the inverted triangular tank bottom, and the other side of the inverted triangular tank bottom is connected with a mud discharge pipe; and the inlet of the primary liquid feeding pump is connected to a feeding pool. The gas-liquid blending and stirring device disclosed by the invention has the advantages of reinforcing the stirring strength, enhancing the blending effect of the material and strain, improving the treatment effect, having a small volume and saving the occupation area. The interior of the anaerobic fermentation tank needs no maintenance; furthermore, the gas-liquid blending and stirring device has a simple structure and convenience for installation, so that the device can be extensively applied in the sewage and sludge treatment industry.
Owner:SHAANXI QINGYUAN ENVIRONMENT INDAL

Banding belt structure for limiting structural displacement of high-temperature gas cooled reactor graphite core

The invention provides a banding belt structure for limiting structural displacement of a high-temperature gas cooled reactor graphite core. The banding belt structure is made of a low-alloy material which can bear high temperature, and forms an annular structure by movably connecting multiple fan-shaped banding rings. A connecting boss is formed in one end of each fan-shaped banding ring, and a connecting groove is formed in the other end of each fan-shaped banding ring; pin holes are formed in the connecting boss and the connecting groove; the connecting boss in one fan-shaped banding ring is movably connected to the connecting groove in the adjacent another fan-shaped banding ring through a pin; multiple limiting cylinders are welded on each fan-shaped banding ring and can be clamped in corresponding semicircular slots in carbon bricks on the side of the reactor core so as to achieve a limiting effect. When each layer is stacked, the limiting cylinders on the banding rings are arranged in a staggered mode and can be well borne. The banding belt structure has the characteristics of high temperature resistance, high pressure resistance, radiation resistance and long service life and is flexible to mount and convenient to manufacture, mount and adjust.
Owner:TSINGHUA UNIV

Antiscaling compound and method for preventing and removing scale

The invention relates to an antiscaling compound and a method for preventing and removing scales; the ingredients of the antiscaling compound comprises: 20-50 percent of natural zeolite, 25-20 percent of TiO, 10-40 percent of V2O5, 20-40 percent of SiO2, and 5-20 percent of NdFeB; the antiscaling compound is an ensemble of regular or irregular solid fine particles or an ensemble of solid porous particles; the average diameter of the fine particles of the antiscaling compound is 0.5-15mm; when the average diameter of the particles of the antiscaling compound is more than 15mm, porous particles are adopted, the pore diameter of the particle is more than 20mum and penetrates through the particle; the density of the antiscaling compound is 1.2-5g/cm<3>; the method for preventing and removing scales is that: the antiscaling compound is placed in water of a heating jacket of a water system freely for preventing and removing the scales in the water system, a filter screen is arranged at the outlet of the water jacket to prevent the antiscaling compound particles from being drained; or the antiscaling compound is placed in a volume body with meshes to form a water processor, the processor is placed nearby the heater and is arranged at the water charging port of the water system to processing charged water. The invention can process the scales efficiently for a long time without secondary pollution, the water treatment is safe, real-time on-line scale removal can be carried out, and the installation and usage are convenient and rapid.
Owner:昆明博远中菱科技有限公司

Flue gas dust removal device

The invention relates to a flue gas dust removal device comprising a casing and a filter element. The filter element comprises a rotating part and a blade, a first cavity is arranged in the rotating part, a second cavity is arranged in the blade, the blade is provided with an opening, the rotating part is in communication with the blade, a conical vertical rod connected with the rotating part is arranged in the second cavity, a baffle is slidably arranged on the inner wall of the second cavity, a tension spring is connected between the baffle and the rotating part, the baffle is provided witha through hole, a water pipe is connected with the baffle, the water pipe extends through the opening to the outside of the blade, a pressure valve is arranged on the side wall of the water pipe, andthe water pipe is connected with an internal hollow water ball. The water ball has a water outlet hole, a cleaning block is slidably arranged on the outer wall of the blade, a connecting rod is connected between the cleaning block and the water ball, a pressure block is slidably arranged on the inner wall of the opening, a spring is connected between the inner wall of the blade and the pressure block, a wind wheel is arranged in the casing, the wind wheel drives the rotating part to rotate, the bottom of the casing is provided with a water tank, and the rotating part is communicated with the water tank by a connecting pipe. Th e flue gas dust removal device realizes the automatic cleaning of the filter element.
Owner:ZUNYI CITY GUI KE TECH

Vibration sand discharging device for 3D printing and vibration sand spreading debugging method thereof

The invention relates to the technical field of sand spreading devices for 3D printing, and relates to a vibration sand discharging device for a 3D printer and a vibration sand spreading debugging method thereof. The vibration sand discharging device for 3D printing comprises a sand hopper, and a sand bin is arranged above the sand hopper; a spiral stirring wheel is arranged in the sand bin, and the top of the sand bin is provided with a stirring wheel motor and a sand supply opening; a sand outlet with a fixed width is formed below the sand hopper in the length direction; the cross section, perpendicular to the length direction, of the sand hopper on the upper side of the sand outlet is in a V shape; a self-leakage-stopping sand discharging device is arranged in the sand hopper above thesand outlet, sliding rails are symmetrically arranged on the two outer walls of the outer side of the sand hopper in the length direction respectively, a plurality of sliding blocks are arranged on the sliding rails respectively, and a vibration air cylinder is connected to the sliding blocks; the lower side of the sand outlet is connected with a sand scraping plate. After the vibration air cylinder stops vibrating, the self-leakage-stopping sand discharging device stops sand flowing to the sand discharging opening. The sand discharging structure can be used for uniformly spreading sand in thelength direction when sand spreading is carried out, and self sand stopping can be effectively achieved after vibration is stopped.
Owner:NINGXIA KOCEL MOLD

Hydrophilic biological carrier for wastewater treatment

The invention provides a hydrophilic biological carrier for wastewater treatment. The hydrophilic biological carrier comprises base materials, hydrophilic functional materials and auxiliary materials, the base materials include high-density polyethylene, the hydrophilic functional materials include iron trioxide, coke and slag powder or polyvinyl alcohol, and the auxiliary materials include talcum powder. The density of the hydrophilic biological carrier for wastewater treatment is 0.93-1.05g/cm<3>, the biological carrier is rough in surface, large in specific surface area, short in membrane hanging time and high in impact resistance, can prevent microbial membranes attached to the outer surface of the carrier from falling off due to friction between the carriers in water, contact angles of sewage and the carrier are reduced, the hydrophilicity of the carrier is improved, so that microorganisms are more easily attached to the carrier, the biological carrier is provided with enhanced components of biological enzyme, the catalytic action of the biological enzyme is facilitated, the enhanced components are high in biological activity and fast in metabolism, the decomposition capacity of contamination in the water can be remarkably improved, the biological carrier contains ultraviolet-resistant components, the service life of the biological carrier is longer than 30 years, and replacement and maintenance are omitted.
Owner:大连宇都环境技术材料有限公司

Oil-gas separator provided with conical spiral channel

The invention discloses an oil-gas separator provided with a conical spiral channel. The oil-gas separator comprises a conical spiral core (1), a conical outer shell (2), an upper cover (3) and an oil collection hopper (4). By adopting the device composed of the components, the upper cover is located on the conical spiral core, the oil collection hopper is located under the conical outer shell, the conical spiral core is sleeved with the conical outer shell, and the downward spiral channel defined by a conical barrel, conical spiral ribs and the conical outer shell is the conical spiral channel; a cavity defined by the oil collection hopper, the conical spiral core and the upper cover is an air chamber; an oil mist inlet communicates with the upper end of the conical spiral channel, the lower end of the conical spiral channel communicates with the oil collection hopper, and an exhaust port communicates with the air chamber. During working, according to the technical scheme that oil mist enters the conical spiral channel through the oil mist inlet and is separated into oil and gas under the action of centrifugal force, the purposes of structure simplifying, non-maintenance, non-failure, cost reduction and high oil-gas separation rate of the oil mist of the oil-gas separator are achieved.
Owner:蔡婕

Dust removing device

The invention discloses a dust removing device. The dust removing device comprises a dust removing filter screen vertically arranged; a flushing nozzle and a water baffle plate are arranged on the twosides of the dust removing filter screen; a nozzle of the flushing nozzle is towards the dust removing filter screen; the flushing nozzle is driven by a two-dimensional driving device to move in a width direction and a height direction of the dust removing filter screen; a water guide groove is formed in the side, near the dust removing filter screen, of the water baffle plate; the water baffle plate is opposite to the flushing nozzle, and is driven by a water baffle plate driving device to synchronously move with the flushing nozzle in the width direction of the dust removing filter screen;drainage ditches are arranged on the two sides of the bottom of the dust removing filter screen near the dust removing filter screen, and are arranged in the width direction of the dust removing filter screen; and the water baffle plate is positioned above the drainage ditch on the same side. The dust removing device is reasonable in structure, can spray water columns to the dust removing filter screen through the flushing nozzle in installation and use to flush the dust removing filter screen under high pressure so as to remove stubborn dust on the dust removing filter screen, achieves excellent dust removing effect, and can automatically remove dust without replacing the filter screen.
Owner:浙江仓森环境科技有限公司

Reusable thermistor overcurrent protection device and application in battery module

The invention relates to a reusable high-current allowable thermistor device and an application in a battery module thereof. The device has a three-layer composite plate structure; the interlayer is a polymer PTC film; the two sides are copper or aluminium plates with good conductivity; and the film and the plates are combined to form an integral body by hot pressing technology. The plates and the film has a plurality of through holes with identical hole diameters and positions; after combination, the upper and the lower metal plates are drilled through by insulating screws, and are locked and fixed by nuts. The device is used as a bus bar in a battery module; the lower part is connected to a battery tab or a plate led out by the tab; the metal plate at the upper part leads out a positive and a negative pole. The device is normally used as a bus bar when the temperature is below a Curie temperature point; when the input or output current is greatly increased suddenly due to external short circuit of the battery module or other accidents, the device temperature is higher than the Curie temperature point, and the resistance is increased by 1000 times at the most; and thus the security and the reliability are effectively guaranteed.
Owner:BEIJING SHENZHOU YUANWANG TECH
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