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

Methods and compositions for removing phosphate from swimming pool waters are disclosed. The compositions include both soluble and substantially insoluble lanthanide carboxylates, preferred examples being lanthanum glycolate and lactate. The methods include the addition of the lanthanide compounds to the bulk of the pool water, but preferably involve the loading of the pool filter with the composition and the circulation of pool water through the filter to effect the removal of dissolved phosphate in the water.

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.

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 machine, which is an improvement on the filter press. The invention provides a filter press which not only works continuously and automatically, but also can increase the filtration pressure and is convenient for vehicle-mounted movement. The present invention has a cylinder (1), has shaft (24) in its center, and rotating plate (14) is arranged on the shaft and rotates clockwise and anticlockwise alternately with the shaft at the same angle, left dividing plate (9), right dividing plate ( 7) It can move up and down, and the filtered filter cake can be moved from the partition to be emptied into fan-shaped holes, and discharged from the cylinder (1), and the filtrate passes through the rotating plate filter (36) and the rotating plate (14). The clapboard filter screen (37) on the clapboard, the sump (35), the left drain pipe (8), and the right drain pipe (6) are discharged; the filtrate is discharged by the pump (44) through the feed left valve ( 39), the feed right valve (40), the feed left pipe (11) feed right pipe (5), and the pressure limiting valve (38) enters the filter chamber. The present invention can continuously and automatically perform pressure filtration. In addition to the pump pressure of the original technology, the filtration pressure also increases due to the rotation of the rotating plate (14) to reduce the volume of the filter chamber, thereby saving labor, reducing labor intensity and improving automation. In addition, it also improves the filtration efficiency and filtration quality.

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 discloses a press filtration crawler belt used for belt-type sludge dehydration equipment. The press filtration crawler belt comprises several chain links, the chain links are connected in order to form a cyclic enclosed structure, and a central part of the chain link is cellular inner ribs. According to the invention, the central part of the chain link is designed as a cellular structure, rigidity of the chain link is guaranteed, the weight of the press filtration crawler belt is greatly mitigated, a structure is easily moved, press filtration time is prolonged, and the press filtration pressure is increased. The test proves that compared with the belt-type press filtration equipment with a traditional structure, the belt-type sludge dehydration equipment can increase the continuous press filtration time by 5-10 times, and the press filtration pressure is increased by 1-2 times. The power energy consumption is relatively reduced due to the light structure, and compared with the belt-type press filtration equipment, the power saving rate is saved by 10-50%.