35results about How to "Guaranteed backwash effect" patented technology

The invention discloses an urban sewage waterpower self-cleaning device with drum grid which comprises, a sewage water pumping pipe, a sewage backwater pipe, a sewage elevating pump and a scrubbing apparatus arranged on the sewage water pumping pipe, wherein the water intake port of the sewage water pumping pipe and the water return port of the sewage backwater pipe are arranged in the sewage trunk canal, the other ends of the sewage water pumping pipe and the sewage backwater pipe are provided with a scrubbing installation.

The invention discloses a microfiltration membrane oil filed sewage processing device. The device comprises a flocculation settlement facility, a cyclone oil-water separator, a multistage mechanical filtering device, and a metal membrane filtering device, which are connected in sequence. The multistage mechanical filtering device comprises a walnut shell filtering device, a fine walnut shell filtering device, a modified fiber ball filtering device, and a dual-layer filtering material filtering device, which are connected in sequence. The sewage processing method comprises the following steps: removing pollutants by the flocculation settlement facility, pumping sewage into the cyclone oil-water separator to carry out separation, and filtering the separated water phase by the walnut shell filtering device, the fine walnut shell filtering device, the modified fiber ball filtering device, the dual-layer filtering material filtering device, and the metal membrane filter device to obtain qualified water phase. The design is novel, the operation is safe, stable, and reliable, the effect is good; the produced water in oil field can be purified and the processed water can reach the standards of reinjection. The provided device can realize gas-water combined backwashing, the backwashing effect is guaranteed, and the device can be used for a long term.

The invention relates to an improved gas-water mixed backwash structure of an aeration biological filter chamber. The clear water in a clear water pool (8) is pumped out by a pressurizing water pump (12) and is led to the bottom of a chamber body (1) through a water distributing pipe net (13), then the clear water passes through a filter material (7) from bottom to top so as to take filter residue (15); then the water enters into a backwash water collecting groove (4) through a sieve (17); the sewage flows to a sewage pool (9) through a water drainage pipeline (6); the upward side of the backwash water collecting groove (4) is provided with a through length supporting lever (16); the sieve (17) encases the backwash water collecting groove (4) and the supporting lever (16) so as to ensure that the filter bed restores the function of filtering and purifying the sewage, prolongs the backwash period and reduces the backwash frequency, as well as ensure that the sewage purifying system canbe better and normally operated; the sieve has simple mounting and dismounting, less material consumption and convenient maintenance.

The invention provides a filter tank backwashing duration control method and system. The method comprises the steps: sequentially carrying out air flushing and water flushing on a filter tank after afilter material in the filter tank is filtered, detecting the turbidity of backwashing wastewater through an online turbidity detection device arranged on a backwashing wastewater tank of the filter tank, stopping water flushing when a detection value is lower than a set value; repeating the steps for several times, and detecting the mud content (expressed by turbidity) of the filter material so as to control the next backwashing duration. The system comprises an online turbidity detection device, a filter material mud content (expressed by turbidity) detection unit, a backwashing water pump and an air pump, wherein the online turbidity detection device and the filter material mud content (expressed by turbidity) detection unit are respectively connected with two sensors, each sensor is connected with controllers of the backwashing water pump and the air pump, and switches of the backwashing water pump and the air pump are controlled through received turbidity information and filter material mud content (expressed by turbidity) information. The method has the advantages of saving water consumption and medicine consumption, and is simple to operate.

The invention discloses a Y221 packer with an anchoring function. The Y221 packer comprises a central pipe, wherein the central pipe is sequentially provided with an upper joint, a backwashing mechanism, a rubber sleeve mechanism, an anchoring mechanism, a centralizing mechanism and a lower joint from top to bottom; the backwashing mechanism comprises an outer sleeve, a backwashing piston sleeve and a backwashing spring, wherein the outer sleeve fixedly sleeves the exterior of the upper joint, a backwashing space is formed between the outer sleeve and the upper joint, and the backwashing piston sleeve is arranged in the backwashing space and divides the backwashing space into a first space and a second space in a sealing manner; the upper joint is provided with a first through hole communicating with the first space, and the outer sleeve is provided with a second through hole communicating with the second space; a containing ring groove for containing a blocking ring is further formedin the position, below the first through hole, of the wall of the upper joint; and the backwashing piston sleeve is provided with a blocking position for blocking communication between an inner runnerand the second space as well as an opening position for communicating the inner runner with the second space.

The invention relates to a drum grille and a using method thereof. The drum grille comprises a shell and a supporting frame arranged at the bottom of the shell, wherein a sewage inlet is formed in theend part of the left side of the shell; a water draining port is formed in the bottom of the shell; a drum assembly and brush assemblies are arranged inside the shell; the drum assembly is horizontally placed inside the shell; the drum assembly comprises a cylindrical drum screen plate and a drum rotating shaft; the brush assemblies are arranged on the inner wall of the drum screen plate and is used for cleaning the inner wall of the drum screen plate; each brush assembly comprises a brush and a brush rotating shaft; the sewage inlet is connected with an inlet water distributing pipe of the drum assembly through a water inlet pipe; the water draining port is connected with an outlet water distributing pipe of the drum assembly through a water draining pipe; the drum grille further comprises a driving assembly, a back flushing assembly and an electric control system. The drum grille has the advantages of a reasonable structural design, convenience in operation and use, low production cost and maintenance cost, safe, stable and reliable operation, high efficiency of intercepting impurities such as fiber and hair in the sewage treatment process, stable effluent quality, high degree of automation and the like.

The invention discloses an upward-flow heterogeneous filter material filter tank which comprises a filter tank body, the bottom of the filter tank body is divided into a water and gas distribution space at the bottom and a filter tank at the upper part through a partition plate, a plurality of long-handle filter heads are arranged on the partition plate to communicate the water and gas distribution space with the filter tank, the bottom of the filter tank is a supporting layer, and the upper part of the supporting layer is a filter material layer. A water outlet groove is formed above the filter material layer in the length direction of the filter tank, the tail of the water outlet groove is communicated with a water outlet channel in one side of the filter tank, a water inlet branch channel is formed in the other side, symmetrical to the water outlet channel, of the filter tank, a water inlet pipe is arranged at the bottom of the water inlet branch channel, and the outlet end of the water inlet pipe is communicated with the water and gas distribution space; and the filter material layer and the supporting layer are filled with a filter material which is a heterogeneous filter material, and the particle sizes of the heterogeneous filter materials are sequentially increased from top to bottom. The heterogeneous filter material is adopted in the filter tank, the obtaining cost of the filter material is low, arrangement with the small upper particle size and the large lower particle size can be naturally formed after backwashing, and the filtering efficiency of the filter tank can be better improved.

The invention discloses a pressure-type air-water mutual flushing filter tank and a filtering method. The filter tank includes a tank body, a water inlet branch pipe, an air inlet branch pipe, a first water main pipe, a second water main pipe and an on-off control device. It includes at least two closed filter grids, each filter grid is provided with a filter material layer, and each filter grid is respectively arranged with a first water outlet and a second water outlet; the water inlet branch pipe is connected with each first water outlet for Import the water to be filtered; the first water outlet of each filter grid is connected with the first water main pipe through the first branch pipe; the second water outlet of each filter grid is connected with the second water main pipe through the second branch pipe; each second branch pipe is provided with inlet The air port is connected with each air inlet through the air intake branch pipe; the on-off control device is used to respectively control the on-off of each water inlet branch pipe, each first branch pipe, each second branch pipe and the second water main pipe. The filter tank reduces the overall height of the tank body and reduces the occupied space of the filter tank.

The invention discloses a backwashing method of a simulated moving bed device for adsorbing and separating xylene. Two adjacent inlet and outlet pipelines of the simulated moving bed device are used as a group of cleaning pipes, the inlet and outlet pipeline positioned on the downstream side of a material path is used as a washing liquid inlet pipe, and the inlet and outlet pipeline positioned onthe upstream side of the material path is used as a washing liquid outlet pipe; a backwashing liquid enters connected grids from the washing liquid inlet pipe, flows upwards, is used for backwashing abed layer positioned on the upper side of the washing liquid inlet pipe and then is discharged from the washing liquid outlet pipe; and the backwashing liquid does not pass through a rotary valve. Only the single bed layer can be subjected to backwashing, adsorbents and internal components of other bed layers are not influenced, and the backwashing liquid does not pass through the rotary valve, so that the interference to the work of the rotary valve is avoided, and the overall stability of production is ensured.

The present invention discloses method and apparatus of using city waste water to provide energy source. The method includes the processes of energy recovery, energy conversion and energy release. Waste water is first pumped from the waste water trunk canal, then passed through heat exchanger and finally returned into the trunk canal. The water inlet and water outlet of the water conveying pipeline share one common filter screen, which is made to rotate in the plane during waste water circulating process. The waste water circulating apparatus consists of waste water pumping pipe, waste water returning pipe, pump and dirt eliminating unit. The waste water pumping port and waste water exhausting port in the waste water trunk canal are provided with dirt eliminating units to prevent the siltation of pollutant.

The invention discloses a using method of packer backwashing. The using method of packer backwashing includes the steps that step1, a Y221 packer is connected to a lower well of a pipe column, the pipe column is rotated after lifting the pipe column outside the well after the packer is lowered to a predetermined position, and then the pipe column continues to be lowered to complete packer setting;step 2, when backwashing is needed, casing pipe pressure is increased by injecting liquid into oil sleeve annulus, when the pressure reaches a set value, a backwash piston sleeve 105 is pushed to compress a backwash spring 102 to move upward, a blocking ring 103 is squeezed to ensure that a backwash mechanism opens; step 3, when the pressure in a casing pipe disappears, the backwash piston sleeve105 returns to the original position under the action of the backwash spring 102, and a well washing channel can be closed; and step 4, when unsealing is needed, the pipe column is lifted outside thewell, a rubber tube 108 resets, and unsealing the packer is completed.

The invention relates to an automatic graded filtering tank device, comprising a tank body, a water collection pipe and a water distribution pipe, wherein a water inlet pipe, a water outlet pipe, a gas outlet pipe and a backwash exhaust water pipe are arranged above the tank body, a manhole and an observation hole are formed in a side face of the tank body, the water distribution pipe is arranged at the upper part of the inner part of the tank body, and is connected with the water inlet pipe, a hole mouth faces upwards, a backwash water inlet is formed in the water outlet pipe, a blow-down pipe is arranged below the tank body, a gas inlet pipe is arranged at the bottom of the inside of the tank body, the water collection pipe is located above the gas inlet pipe, and is connected with the water outlet pipe, a filtering plate is arranged between the water collection pipe and the water distribution pipe, a filtering material layer is arranged above the filtering plate, and a flowmeter and an electrically operated valve of the water inlet pipe are arranged on the water inlet pipe. According to the automatic graded filtering tank device disclosed by the invention, arrangement of filtering materials reverse to the grade is adopted, large-sized and large-proportion filtering materials are arranged at the bottom, and can be graded automatically after backwashing.

The invention belongs to the field of mechanical devices, and particularly relates to an ultra-large horizontal filter for water treatment. The filter comprises a filter tank body, a water distribution chamber, a filter material layer, a drain outlet, a water inlet and a drain outlet, wherein an upper water inlet and outlet chamber is arranged above the filter material layer in the filter tank body, a lower water inlet and outlet chamber is arranged below the filter material layer, and the filter material layer is supported by a porous plate; and a water distribution chamber side plate is arranged between the water distribution chamber and the filter material layer. The filter has the advantage that the filtering area and the equipment output are greatly improved by 30% or above. Columns are adopted for supporting below the porous plate, and deformation of the porous plate after long-time operation is avoided. Column supporting is adopted, so that the scale of single equipment is further expanded; no dead zone exists in water distribution inside the equipment; a double-speed water cap is used for water distribution, and uniform water distribution can be guaranteed during operationand backwashing of the filter.

A self-cleaning water purifier comprises a water purifier bottle. A water sealing baffle is arranged inside the water purifier bottle, a raw water storing cavity is arranged inside the water purifier bottle below the water sealing baffle, a raw water inlet and a flushing water outlet are arranged on the water purifier bottle, a primary filter element is mounted in the raw water storing cavity, a filtered water outlet extending out of the water sealing baffle is arranged at the top of the primary filter element, an upper water sealing device is arranged above the filtered water outlet, and a secondary filtering device is arranged between the upper water sealing device and the primary filter element. A central water baffle arranged in the middle of a modularized annular filter element is utilized to force water flow to flow around the central water baffle, and the water flow is enabled to flow along a longest passage to guarantee contact filtering effect; a compression airbag mounted in the upper water sealing device and a one-way valve arranged at a flushing hole of the primary filter element are utilized, so that back-flushing clean water is enabled to flow through a shortest passage to reduce loss, and back-flushing effect is guaranteed.

The invention discloses a method and a system for recycling reverse osmosis concentrated water. Tap water is filtered by an ultrafiltration device (20) to obtain ultra-filtered water, the ultra-filtered water is subjected to a softening process to obtain softened water, and the softened water is treated by a reverse osmosis device (30) to obtain osmotic water and reverse osmosis concentrated water. The method comprises the steps of mixing the reverse osmosis concentrated water and the ultra-filtered water to obtain back washing water and performing back washing on the ultrafiltration device (20) with the back washing water. By adoption of the technical scheme, the reverse osmosis concentrated water and the ultra-filtered water are mixed for back washing of the ultrafiltration device, so that on the premise of guaranteeing the back washing effect on the ultrafiltration device, the reverse osmosis concentrated water is recycled and waste of water resources is avoided.

The invention discloses a novel cloth filter which consists of three parts including a tank body, a filtering ring and a backflush device; the tank bottom of the round tank body is of a baffle layer structure; the baffle plate divides the tank body into an upper sewage cavity and a bottom clean water cavity; a plurality of water discharge holes which run through the thickness of a baffle plate are uniformly distributed on the baffle plate in a radially diffusing manner; a plurality of concentric annular filtering rings at equal intervals are arranged on the outer periphery of a central support pier, and the water discharge holes in the baffle plate are communicated with inner cavities of the filtering rings on the upper part; and a suction disc is fixedly elastically arranged on a fixed frame below an operating bridge of the backflush device, and a mud scrapping plate is fixedly arranged on the bottom of the backflush device. According to the novel cloth filter, a concentric filtering ring structure is adopted, and can be adaptive to the upgrading and modification of the round tank body, and meanwhile, the filtering rings at the periphery also have the maximal filtering surface areas, so that great water through amount can be realized. According to the novel cloth filter, raw water automatically flows into the clean water cavity at the bottom from the upper sewage cavity after passing through a filtering layer by utilizing the effect of gravity, and does not need additional power, and therefore, the operation energy consumption and the cost are lowered greatly.