341 results about "Cloth filter" patented technology

Methods and apparatus for treating water and wastewater include the step of flowing a suspended solids stream generally upward through a sludge blanket region of a cloth disk filter vessel, thus forming a partially treated effluent composition and a solids-enriched sludge blanket. The partially treated effluent composition is allowed to flow generally upward to a cloth filter zone in the vessel after contacting the sludge blanket. The methods include flowing the suspended solids stream through one or more distribution headers positioned in the sludge blanket. An option is to provide a sludge concentration zone in the sludge blanket region, allowing sludge to flow into the sludge concentration zone to form concentrated sludge. Other methods and apparatus include backwash assemblies that backwash substantially the entire filter cassette surfaces, with or without use of a sludge blanket zone. Either the backwash assemblies or filter cassettes move in the latter methods and apparatus.

The invention discloses complete equipment and a method for extracting and purifying precious metals from waste circuit boards. The complete equipment comprises a bottom-blowing furnace, a secondary smoke combustion furnace, an absorption tower, a pulsed jet cloth filter, a wet desulfurization device and an electrostatic precipitation defogging device, and is characterized in that smoke generated by the bottom-blowing furnace is discharged through a flue arranged on the top of the bottom-blowing furnace; the flue communicates with an inlet of the secondary smoke combustion furnace; the secondary smoke combustion furnace communicates with a spraying quenching tower through a smoke waste heat boiler; an outlet of the spraying quenching tower communicates with the pulsed jet cloth filter through the absorption tower; an activated carbon spraying device is arranged inside the absorption tower; the pulsed jet cloth filter communicates with the wet desulfurization device; and the wet desulfurization device communicated with a chimney through the electrostatic precipitation defogging device. Effective separation and respective enrichment and recycle of various metals are achieved, organic substances are used as fuel, and no secondary pollution is generated for the environment. The process procedure is short, and the remarkable economic, environment-friendly and social benefits are achieved.

The invention discloses an automotive air-conditioning filter, relating to the technical field of manufacturing of automotive parts. The automotive air-conditioning filter comprises a shell, wherein an air inlet is formed in the top of the shell, an air outlet is formed in the bottom of the shell, a filament non-woven filter cloth filter element is arranged in the shell and is formed by laminating multiple layers of filament non-woven filter cloth, a layer of active carbon filter element is arranged under the filament non-woven filter cloth filter element in the shell and comprises active carbon packaged by non-woven fabrics. Compared with the prior art, the automotive air-conditioning filter has the advantages that the problems that a current automotive air-conditioning filter cannot be used for effectively filtering harmful gas and is poor in filtering effect are solved.

The invention belongs to the copper alloy processing field. Aiming at that a larger space is provided between a smelting furnace and a dust cover separated with each other in the prior art, when using partial scrap copper and even the entire scrap copper to smelt copper or copper alloy, the pollution is serious and the useful materials in the dust are wasted, an environmental protection system of copper and copper alloy smelting of the invention is adopted. The useful materials in the dust are recovered, the working environment of smelting is greatly improved and the waste gas exhausted by smelting is superior to the current national industrial waste gas emission standard. The system consists of a smelting furnace (1), a lower gate of the dust cover (2), an upper gate of the dust cover (3), a dust cover (4), a dust collector cyclone (10), a powder collecting box (11), a pipeline (5), a pulsed jet cloth filter (6), a dust box (9), an induced draft fan (8), a vent pipe (7), a slag drop channel (12), a slag connecting box (13) and an operations area (14). The system is also suitable for the environmental protection systems of other nonferrous metal and ferrous metal smelting.

A dust collecting table includes a box divided into a first chamber, a second chamber, a third chamber and a fourth chamber, a spark blocker installed in an upper portion of the second chamber, a movable cloth filter device installed in a lower portion of the second chamber, a blower set in the first chamber, and at least a screening device. As the blower is switched on, air is to be sucked from air inlet gates of the spark blocker to pass through the movable cloth filter device, the blower and the screening device orderly into the atmosphere, blocking sparks completely and achieving an effective filtration.

The invention especially relates to a modularized integrated system and method applicable to treatment of low-temperature livestock and poultry slaughtering waste water in the north, belonging to the technical field of water treatment. The modularized integrated system comprises the following concrete modules: a pre-treating module used for intercepting large pollutants in the livestock and poultry waste water, a primary physicochemical module used for adjusting and biological hydrolysis, a secondary biochemical module and a tertiary in-depth treating module, wherein the secondary biochemical module comprises an anaerobic submodule and an aerobic submodule which are in series connection, and the tertiary in-depth treating module comprises a micro-flocculation submodule, a cloth filter and an ultraviolet disinfection submodule.

The present invention relates to a method for cleaning cloth filter media supported on a plurality of opposingly-spaced filter plate frames. A backwash assembly (23) moves linearly and includes at least one cylindrical backwash arm (200) that rotates to consecutively clean the media of the spaced filter plate frames.

The invention discloses a quick molding dustproof perforating machine. The machine comprises a worktable; the bottom of the worktable is fixedly connected with a base; a first support column is fixedly connected to the top of the worktable near the left side; a second support column is fixedly connected to the top of the worktable near the right side; a placing plate is fixedly mounted at the topof the worktable near the center; and a drilling groove is formed in the top of the placing plate near the center. In the quick molding dustproof perforating machine, through cooperative use of an airblower, a nozzle, an induced draft fan, a dust sucking head, a filter water tank, a magnet, a precipitation box, a non-woven cloth filter layer, an active carbon filter layer, a glass fiber filter layer, the placing plate, the drilling groove, a limiting block, a fixed clamping plate and a fixed bolt, when workpieces are perforated by the perforating machine, dust and metal chips can be effectively blown to one side of the dust sucking head, so that the induced draft fan conveniently sucks the dust and the metal chips for treatment to improve the dust preventing and removing effects.

The invention relates to a preparation method of a nano fiber-needling PTFE base cloth filter material, and belongs to the technical field of electrospinning. The preparation method comprises the following steps: step 1, PTFE base cloth pretreatment; step 2, electrospinning; step 3, superfine nano fiber dispersion liquid preparation; and step 4, composite filter material soaking treatment. In the technical scheme provided by the invention, the PTFE base cloth is prepared by mixing PTFE fibers and PPS fibers, so, compared with the traditional glass fiber mat, the flexibility is better, and the spinnability and durability of the fiber material are relatively greatly improved; the service life is prolonged to 1-2 years compared with eight months of the common glass fiber mat base cloth; and the market prospect is wide.

The invention discloses a discharging and dedusting device on bunker, which comprises a movable unloading trailer and a supporting platform, and the supporting platform is arranged with a cloth bag deduster, a flue-dust retainer, a sound wave ash removing device, a dedusting pipeline and a centrifugal blower fan; the flue-dust retainer is arranged below the cloth bag deduster, and the sound wave ash removing device is arranged above the cloth bag deduster, and the centrifugal blower fan and the flue-dust retainer are communicated, and one end of the dedusting pipeline is provided with an ash suction port which is communicated with an ash outlet of the movable unloading trailer, and the other end of the dedusting pipeline is communicated with the upper part of the cloth bag deduster. When discharging, primary air containing dust enters into a deduster casing from an air inlet of the cloth bag deduster, and an outer filter cloth filters the dust in the primary air containing dust, and the dust adheres to the cloth bag; when the set value is reached, the sound wave ash removing device starts for vibrating and beating the dust which is adhered to the cloth bag, and dust drops into the flue-dust retainer, and is sent to an electric ash discharging and storing apparatus by the centrifugal blower fan for carrying away. The equipment has the advantages of high work efficiency, good filtering efficiency, improved work environment, thereby realizing energy saving and emission reduction without secondary pollution.

The invention relates to an innocent treatment system for copper powder containing organic matter and fiber glass and the treating process. Said system can not only recover valuable copper, but also can treat organic waste innocently. It is characterized by rational allocation, high purity of recovered copper powder, and thorough treatment of waste material and water gas. The innocent treatment system is characterized in that it is connected by electrode smelter, rotary retort, decomposition combustion tower, cooling tower, waste gas treating tower and jet cloth filter through conduit pipe. The invention can recover copper powder from waste wiring board, covering brass plate and other copper- containing rim leftover and can treat left waste material innocently.

The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices, including improved cloth media filter backwashing using a rotating backwash arm assembly.

The invention relates to a microfiltration cloth surface filtering water yielding method for a circular sedimentation tank, in which the water yielding is realized by a filtering system that mainly consists of a microfiltration cloth filter board (1) and an automatic cleaning device (2), wherein, the filtering system is provided with a plurality of microfiltration cloth filter boards which surround the periphery of the circular sedimentation tank and carry out the surface filtering of the sewage in the sedimentation tank, thus reducing the concentration of the suspending solids in the sewage to below 10mg/L;when the microfiltration cloth filter board is blocked up, the microfiltration cloth filter board is washed repeatedly by the automatic cleaning device, to resume the filtering function thereof. The method of the invention can improve water quality, and ensure the concentration of the suspending solids in the water to be lower than 10m/L; the method has the advantages of simple structure, convenience of installation and maintenance and low operation cost; and the backwash can be finished automatically and easily; the method can be used by old sewage treatment plant for improving the transformation of the yielding water quality standard and little changes can be done to the original technical equipment and construction; the phosphorus in the sewage can be effectively removed by using jointly with metal salt coagulant; besides, the chroma of the yielding water can also be effectively reduced.

The present invention provides a sullage dewatering used jointed cloth filter strip which dewaters the slurry shaped or sullage shaped dewatering object to the cake shaped object that contains lower moisture and can simplify the hanging operation of the sullage dewatering used jointed cloth filter strip and the cloth filter strip type dewatering device. The cloth filter strip type dewatering device is provided with the following components: a sullage dewatering used jointed cloth filter strip, which is used for the cloth filter strip of the cloth filter type dewatering device for dewatering the slurry shaped or sullage shaped dewatering object to the cake shaped object that contains lower moisture, and it is formed by clutching the seam ring of the hatch strip provided with seam rings at the two end parts and traversing the component wire through the formed through hole to joint it; and a dewatering part which does filtering and dewatering to the dewatering object provided on the cloth filter strip by the pressing of the pressuring strip or roller and/or the suction from the lower part of the cloth filter strip; besides, it winds the jointed cloth filter strip and do dewatering to the sullage shaped dewatering object.

A backwash header for a cloth filter includes a body having a length, a diameter, first and second ends, a longitudinal axis, and an exterior surface, the body defining at least one internal cavity. The body includes at least one suction slot sized to allow fluids and solids to enter the internal cavity from outside of the exterior surface. A structure is attached to a portion of the exterior surface of the body around and extending away from the suction slot to form an open-ended chamber defined by the structure and a portion of the exterior surface near the suction slot. The structure allows fluids and solids to enter the open-ended chamber and then the suction slot and cavity from a material being cleaned. Cloth filters and methods of treating water and wastewater using the backwash headers and cloth filters.

The invention relates to a rebalance system and method for a wet-process desulfurization water system of a heat-engine plant. The problem that water of a desulfurization system is deeply saved while a water system of the desulfurization system is rebalanced is not solved. The rebalance system comprises a gypsum carrying water pipe and a desulfurization wastewater pipe and is characterized by further comprising a water pipe for replacing pulping water with filtering water, a water pipe for replacing filter cloth filter cake washing water with the filtering water, and a water pipe for replacing demister washing water with the filtering water, wherein the two ends of the water pipe for replacing the pulping water with the filtering water are connected with a washing filtering water tank and a pulp tank respectively; and the two ends of the water pipe for replacing the filter cloth filter cake washing water with the filtering water are connected with the washing filtering water tank and a filter cloth filter cake respectively. The rebalance method has the characteristics that the filtering water in the filtering water tank is conveyed into the pulp tank by the water pipe for replacing the pulping water with the filtering water and is used for completely or partially replacing the pulping water. According to the rebalance system and method, the deep water saving is carried out on the desulfurization system so that the water system of the desulfurization system is rebalanced.

The invention provides a spreading mechanism and a spreading method for an organic matter solid waste treatment device. The spreading mechanism comprises a filter cloth filter pressing chamber, a spreading bed and a cloth rolling frame used for providing a filter cloth, a tray capable of moving up and down is arranged in the filter cloth filter pressing chamber, the spreading bed comprises a spreading part capable of moving back and forth, and the cloth rolling frame is arranged between the spreading bed and the filter cloth filter pressing chamber; and the moving direction towards the filtercloth filter pressing chamber is taken as the advancing direction, the spreading part is in a filter cloth spreading state when advancing, and the spreading part is in a material spreading state whenretreating. The single-layer filter cloth is folded and then laid in the filter cloth filter pressing chamber layer by layer when moving back and forth, and material laying is conducted between the two folded layers of the filter cloth, so that the filter cloth spreading quality and the dehydration efficiency are effectively improved.

The invention discloses a tree barrier hidden danger rapid detection method based on a vegetation three-dimensional convex hull and a terminal. The method comprises the steps that ground points in a power transmission line are filtered based on a cloth filtering algorithm; a power line point cloud is extracted from the power transmission line laser point cloud data of which the ground points are filtered out; vegetation point cloud in the power transmission line laser point cloud data is extracted; three-dimensional reconstruction is performed on the single power line to obtain a vectorizationmodel of the single power line; and the vegetation three-dimensional convex hull is generated through the vegetation point cloud, the distance between the vegetation three-dimensional convex hull andthe power line vector is calculated, tree barrier hidden danger analysis is conducted according to the distance, and a tree barrier hidden danger analysis result is obtained. According to the methodfor calculating the distance between the power line vector and the vegetation three-dimensional convex hull, the calculation amount of the tree line distance is greatly reduced, and the tree barrier hidden danger detection efficiency is greatly improved.

A method for sensing the blocked degree of gauze filter features that during baking job, the rotation speed (RPM) of variable exhaust blower is monitored, and when said rotation speed is higher than a reference value to some extent the blocked degree of gauze filter and exhaust pipe can be sensed and a signal is sent to user for scavenging them.

The invention discloses an assembling method for a fiber filtration cloth filter and a sewage treating method. According to the sewage treating method, fiber filtration cloth is employed as a filter layer; a filtering rotating drum coated by the fiber filtration cloth is vertically arranged in an enclosed pressure vessel; sewage entering the pressure vessel enters the filtering rotating drum after filtration by the fiber filtration cloth and is then discharged from a water outlet; the pressure vessel is employed to increase the flow of sewage passing through the fiber filtration cloth, so work efficiency is improved; and a backwashing apparatus installed at the side of the filtering rotating drum is used for backwashing, and the filtering rotating drum rotates under the driving of a drive unit during backwashing, so 360-degree backwashing of the filtering rotating drum and the fiber filtration cloth is realized. Since a filtering disc is arranged in a shell, influence of the external environment is avoided; due to vertical arrangement of the filtering rotating drum, the fiber filtration cloth filter has the advantages of a small occupied land area, low investment, a simple transmission mechanism, low power of the drive unit and conservation of energy. The fiber filtration cloth filter has good adaptability and is easy to install and adaptive to filtering conditions on various occasions.