33results about How to "Increase filter pressure" patented technology

Provided are a polyester polymerization catalyst with which the generation of foreign materials caused by the catalyst or mold pollution at the time of molding are reduced and polyesters having remarkably superior thermal stability and color tone can be obtained.

Provided is a polyester polymerization catalyst produced by the reaction of a titanium compound and a mannitol in a molar ratio of titanium atom to mannitol of from 1:1 to 1:3. A method for producing a polyester employs the polyester polymerization catalyst.

The invention relates to a pressure filter, which comprises a single straining chamber device formed by a fixing filter plate, a multifunctional straining chamber ring, a moving frame and a movable filter plate. Wherein, the fixing filter plate has a liquid inlet and a filtrate outlet and a ring to fix the sealing surface of filter plate straining chamber; the surface of fixing filter plate has liquid discharge grooves; the fixed filter plate straining chamber sealing surface and the straining chamber sealing surface of multifunctional straining chamber ring clamp the fixed filter plate filter cloth; another straining chamber sealing surface of multifunctional straining chamber ring and the sealing surface of moving frame fix the filter cloth of movable filter plate; the moving frame via the hydraulic system compresses the moving frame, the multifunctional straining chamber ring and fixing filter plate; the fixing filter plate, multifunctional straining chamber ring and the moving frame form the straining chamber; the movable filter plate can make piston movement inside the straining chamber; the side wall of multifunctional filter chamber ring has a feeding inlet; the surface and side surface of movable filter plate have liquid discharge grooves, while the back surface has guide rod; the hydraulic system via the guide rod pushes the movable filter plate forwards or backwards inside the straining chamber.

The invention relates to a road cleaning sweeper truck with a sewage recovery and reutilization function. The sweeper truck comprises a truck body and a clean water tank, wherein the clean water tank and a sewage tank are separated by a retaining plate, and are respectively and fixedly arranged on a chassis, a suction pipe penetrates through the chassis and extends into the sewage tank, the bottom of the suction pipe is connected with a suction nozzle for cleaning, a polymer sintering membrane filter is arranged at the top end in the sewage tank, a sewage pump is arranged in the sewage tank, and is connected with the polymer sintering membrane filter through a pipeline, a filtering water outlet pipe extends to an opening at the top of the clean water tank along the outer edge of the sewage tank by passing through the polymer sintering membrane filter, a backwashing pipe is connected with the polymer sintering membrane filter, and the opening of the backwashing pipe is provided with a backwashing valve. The sweeper truck has the advantages that the space structure of the sewage tank of the sweeper truck is sufficiently utilized by the horizontal type polymer sintering membrane, the problem of overlarge occupation space when the polymer sintering membrane filter is vertically arranged is solved, the filtering flow quantity of the polymer sintering membrane is approximate to the constant flow quantity in the specific application, and the filtering pressure in the sewage cavity is increased; the problems of overhigh initial flow quantity and difficult control over constant flow quantity are solved.

In a polyester production method, a titanium compound having a radical selected from a carbonyl group, a carboxyl group, or an ester group, and a phosphorous compound having a structure illustrated in Formula (I), are added

This yields a polyester composition which does not exhibit increased filter pressure when forming, which has excellent filament and film forming properties, and which has a polymer color tone superb to that of conventional products.

The invention discloses a filter plate of a filter press and relates to the field of solid-liquid separation, aiming at solving the technical problem that a plate-and-frame filter plate is low in compressive strength in the prior art. A feeding channel and a liquid outlet are formed in the filter plate; bosses are formed in the front surface and the rear surface of the filter plate; the bosses are detachably connected with the filter plate. The filter plate is applied to a plate-and-frame filter press.

The invention discloses a personal water purifying device, which comprises a water purifying device body and is characterized in that the water purifying device body comprises a peristaltic pump module, a primary filtering module, a secondary filtering module and a tertiary filtering module in sequential connection. By adopting the technical scheme, the personal water purifying device has the beneficial effects that tertiary filtering mode is used; the filtering effect is good; the goal of direct drinking of producing water is realized; a hand-operated peristaltic pump is used; the continuous water inlet and water producing can be realized; the filtering driving pressure is provided for municipal pipeline tap water, so that the effective multistage filtering becomes feasible; the modular design is used; the filtering modules are connected through screw threads; any module can be simply and conveniently replaced; the whole service life of the device is effectively prolonged.

The invention discloses equipment for dissolving a nitrate solution. Nitrate comprises nitrate ions and metal ions. The nitrate liquor is dissolved by the equipment to obtain a nitric acid solution and metallic oxides. The equipment comprises a concentration device, a calcination device and an absorption device. The concentration device is used for concentrating stock solutions, the calcination device is used for calcinating second concentrated solutions, and the absorption device is used for absorbing nitric acid in acid gases. The concentration device comprises a first filter, a second filter and an evaporation and concentration device. The ratio of filtration media of the first filter to the molecular weight is larger than or equal to interception rate of 1000 substances which is larger than or equal to 99%. The ratio of filtration media of the second filter to the molecular weight is larger than or equal to the interception rate of 100 substances which is larger than or equal to 99%. A first filtrate outlet of the first filter is communicated with a liquid inlet of the second filter. A first concentrated-solution outlet of the second filter is communicated with a liquid inlet of the evaporation and concentration device. A second concentrated-solution outlet of the evaporation and concentration device is communicated with a liquid inlet of the calcination device. An acid-gas outlet of the evaporation and concentration device is communicated with a gas inlet of the absorption device.

The invention discloses a solid-liquid mixture filter device. The solid-liquid mixture filter device comprises a tank, a cylinder jacket, a piston, a filter medium and a solid discharging device, wherein the bottom of the tank is communicated with the solid discharging device; the filter medium is arranged in the tank; the space in the tank is partitioned into two parts of a filter cavity and a liquid purification cavity; the filter cavity is communicated with the liquid purification cavity through filter holes in the filter medium; a liquid inlet pipe provided with a liquid inlet one-way valve is communicated with the filter cavity; a liquid outlet pipe provided with a liquid outlet one-way valve is arranged on the outer wall of the tank and is communicated with the filter purification cavity; the cylinder jacket is communicated with the filter cavity; the piston is inserted into the cylinder jacket. The solid-liquid mixture filter device is reasonable in structure, convenient to operate, high in filter precision, high in efficiency, low in energy consumption, free from pollution, and low in using cost and maintenance cost, and is applicable to water filter, oil filter and mineral purification and filter, and can be widely applied to filtering of solid-liquid mixtures in water treatment industry, food chemical industry, industrial mining industry, machining industry and the like.

The invention relates to a garbage storage warehouse. The garbage storage warehouse comprises a storage warehouse bin, wherein a plurality of partition plates are arranged in the storage warehouse binand divide the storage warehouse bin into a plurality of partition cabins with openings in the upper portions, the partition cabins are divided into an unloading cabin, a circulation cabin, a fermentation cabin and a feeding cabin, and the feeding cabin and the circulation cabin are both adjacent to the unloading cabin. Compared with the prior art, the effective storage capacity of the garbage warehouse is improved, the fermentable (especially anaerobic fermentation) time of garbage can be prolonged, the average prolonged time is 30%, the filter pressing pressure of leachate of the garbage isimproved, the standing leachate time is prolonged, and more leachate is generated, so that the water content of the garbage before entering a furnace is reduced, the waste incineration heat value andthe power generation capacity are improved, the air volume is reduced, the loads of fan equipment and dust removal, deacidification and denitration equipment are reduced, and the equipment investmentis reduced.

The invention discloses a faucet filter element structure. The faucet filter element structure adopts a PE sintering filter element as a main shell, and the PE sintering filter element can bear high filter pressure, is nontoxic and tasteless, and has good corrosion resistance to an acid-base solvent; an inner filter element material adopts multiple combination modes, and multiple effects that large particle impurities and tiny particles can be effectively taken out, chlorine, organic impurities, colors and peculiar smells in raw water are removed, bacterium breeding is effectively inhibited, viruses are effectively removed, and water scales are prevented from generating are achieved; the faucet filter element structure is high in filtering capacity and is also completely excellent in adsorption capacity, and water after filtering is clean and safe, and can be directly drunk.

The invention discloses a high-pressure filter press. The high-pressure filter press comprises a belt type filter-pressing dehydration section and a crawler belt high-pressure dehydration section which are mounted on a rack from top to bottom, wherein the belt type filter-pressing dehydration section comprises a gravity dehydration section, a low-pressure dehydration section and a medium-pressure dehydration section with pressures sequentially increased from top to bottom; and a mixing stirrer is arranged between a discharge port of the medium-pressure dehydration section and a feed port of the crawler belt high-pressure dehydration section. According to the high-pressure filter press, filtering pressure is greatly increased, the maximum filtering pressure is increased to 5 MPa from 0.6 MPa, and the filtering effect which is not lower than the filtering effect of a high-pressure diaphragm plate-and-frame filter press is achieved; the mixing stirrer is mounted at the feeding position of the crawler belt high-pressure dehydration section, and a filter aid or a treated backflow material is added into a material having been subjected to medium-pressure dehydration according to the characteristics of the material, so the high-pressure adaptability of the material is improved, and continuous high-pressure filtration dehydration is realized; and a crawler belt ring in the crawler belt high-pressure dehydration section is provided with a sealing strip and a water retaining flange, so a nail bearing is not corroded by a filtrate, and service life is greatly prolonged.