32results about How to "Increase the filtration speed" patented technology

The invention discloses an electric-bag composite dust collector. The electric-bag composite dust collector comprises a composite dust collecting region in a housing, wherein the composite dust collecting region comprises an electric bag dust collecting region and a first electric field dust collecting region; the electric bag dust collecting region comprises a filter bag region and a second electric field dust collecting region; a filter bag dust collecting device is arranged in the filter bag region, and located on the upper end of the electric bag dust collecting region; an electric field dust collecting device is arranged in the second electric field dust collecting region, which is communicated with the filter bag region and located on the lower end of the electric bag dust collecting region; and an electric field dust collecting device is arranged in the first electric field dust collecting region, which is communicated with the electric bag dust collecting region and located onthe front end of the electric bag dust collecting region. In the electric-bag composite dust collector provided by the invention, the second electric field dust collecting region is arranged on the lower end of the electric bag dust collecting region, so that the dust can be recharged when a portion of smoke flows from the first electric field dust collecting region to the second electric field dust collecting region, thereby enhancing the dust charging strength. Additionally, the second electric field dust collecting region can effectively collect dust dropping from the filter bag region when the dust is removed, thereby reducing secondary dust emission, prolonging dust removal period, prolonging the service life of the filter bag, reducing the whole dust removing resistance, and improving the overall performance of the dust collector.

The invention discloses an electrostatic-bag composite dust collector which includes an electrostatic-bag mixing area provided with a filter bag and electric field. The filter bag is a metal filter bag. A negative discharge pole is arranged on the periphery of the metal filter bag. A positive pole plate is disposed in the electrostatic-bag mixing area and is corresponding to the negative discharge pole, so that the electric field is formed by the discharge pole and the positive pole plate. A negative pole system is formed by the metal filter bag, which is corresponding to the positive pole plate, so that friction on the filter bag is avoided in the technical scheme and service life of the filter bag is ensured. The electric field is formed by the metal filter bag and the discharge pole, so that charging property of dust is improved, and when the dust is captured by the filter bag, a loose dust layer is formed on the surface of filter bag due to the principle of like charge repelling each other, thereby preventing dust caking and improving dust removal efficiency. The metal filter bag is a negative pole system, so that under the constraint of electric field force, speed of the charged dust is reduced and the dust is remained in and even deposited in the electric field, while flue gas can flow towards the metal filter bag at high speed, so that the dust collector also can increase the air flowing speed in the filter bag area, thereby increasing utilization ratio of the filter bag and utilization ratio of space.

The invention discloses a compound filter material, a method and application thereof, and relates to a filter material. The invention provides a compound filter material which has good folding endurance, corrosion resistance and wear resistance and can be used as a high-temperature environment filter material, a method and application thereof. The compound filter material comprises the following components in percentage by mass: 1 to 99 percent of basalt fiber and 1 to 99 percent of polytetrafluoroethylene fiber. The preparation method comprises the following steps of: mixing the basalt fiberand the polytetrafluoroethylene fiber to obtain a mixed fiber; and adding an antistatic agent to the mixed fiber for mixing to obtain the compound filter material. According to the mass percentage, the adding amount of the antistatic agent is 0.1 to 20 percent of the mixed fiber. The compound filter material can be used for directly preparing composite filter cloth with single-layer structure or multi-layer structure, and the prepared composite filter cloth with single-layer structure or multi-layer structure can be used for producing a filter device.

The invention discloses a filter cartridge dust collector. The dust collector comprises a case body which is provided with an air inlet and an air outlet, a plurality of filter cartridges which are obliquely arranged inside the case body, and a dust cleaning device which blows compressed air into the filter cartridges from an open end above the filter cartridges. The inside of the filter cartridges is fixedly provided with a core tube with an upper end head sealed along the extension direction of the filter cartridges, and a cavity is arranged between the core tube and the filter cartridges. As the filter cartridges are internally provided with the core tube, the compressed air blown from the dust cleaning device can only pass from the cavity arranged between the core tube and the filter cartridges, thus reducing the blowing area in the filter cartridges; the air velocity of the blowing airflow is increased on the premise of blowing the same air flow quantity, which causes the blowingairflow to fully contact filter materials and improves the dust cleaning efficiency. As the dust cleaning efficiency is improved, even the dust which is fully stuck to the filter materials can be fully removed, thus being capable of properly increasing the filtration air velocity and indirectly improving the dedusting efficiency.

The invention discloses a nano-copper-zinc oxide PTFE fiber air filter material and a preparation method thereof. The method obtains a nano-copper-zinc oxide PTFE fiber air filter material through four steps of preparing nano-copper, preparing nano-zinc oxide, mixing ingredients and manufacturing non-woven fabrics. Zinc PTFE fiber air filter material. Compared with the prior art, the present invention has the following advantages: the air filter material obtained by the present invention contains nano-metal copper and nano-zinc oxide, has a filtering effect and also has a bacteriostasis effect, and has a wide variety of antibacterial and high efficiency; The efficiency reaches 99.99%, good air permeability, high filtration wind speed, and strong chemical stability; it can be well matched with air purifiers or fresh air fans; the manufacturing process is simple, and it is easy to realize industrialization.

The invention discloses an inorganic-fiber ultra-high temperature composite filter material comprising a base cloth layer and felt layers. The base cloth layer is arranged between the two felt layers and is made of inorganic fiber; the felt layers are made of stainless steel composite filter; the inorganic fiber is basalt fiber or ceramic fiber; and the stainless steel composite filter is formed by mixing stainless steel fiber and the basalt fiber or the stainless steel fiber and the ceramic fiber, wherein the proportion of the stainless steel fiber is 10-30 percent. The stainless steel fiberis melted and sintered at a high temperature so that the stainless steel fiber is welded on crossing points of warp yarn and weft yarn of base cloth to form nodes and accordingly form a sintered filter felt. The invention effectively improves the anti-filtration airspeed capability, the fracture strength and the peeling strength of the filter material, prolongs the service life and satisfies the requirements of the ultra-high temperature flue gas abatement field.

The invention relates to an offline ash removal online overhauling rotary pulse blowing filter-bag dust catcher, which comprises a cylindrical main shell, an ash discharger, a filter chamber, a tube nest, filter bags and an annular clean air chamber, wherein a fixed air storage bag, pulse valves, a compressed air distributor, a rotary driving device and a plurality of rotary pulse blowing pipes are arranged in the center of the main shell; a plurality of insulating plate structures of which the peripheries are provided with sealing devices are arranged above the rotary pulse blowing pipes; offline ash removal hoods are arranged on two sides of each pulse blowing pipe; the tube nest (5) is arranged on the top of the filter chamber (4); the filter bags (6) are arranged between the tube nest (5) and the filter chamber (4) in a concentric circle; an air outlet valve is arranged at an air outlet corresponding to each fan-shaped clean air chamber; and an air outlet pipe is arranged at the periphery of the inside or outside of the main shell. By the offline ash removal online overhauling rotary pulse blowing filter-bag dust catcher, the offline ash removal and online maintenance of the dust catcher can be realized, the ash removal of all filter bags can be completed by a plurality of pulse valves; the installation height of the dust catcher can be reduced effectively; the drag loss of the dust catcher can be reduced; and the running power consumption can be reduced.

The invention relates to dust removing equipment, and discloses internal filtering dust filtering equipment, which comprises a box body, an air inlet, an air outlet, a filtering fixed seat, a filter, a blowing system and an ash storage box, wherein the filter is fixed on the filtering fixed seat; the blowing system is arranged above the filter; and the ash storage box is arranged below the box body. The internal filtering dust filtering equipment is characterized in that: the blowing system comprises an air source device and a blowing pipeline; and an air source is blown from the air source device to the opening of the filter from top to bottom through the blowing pipeline. The internal filtering dust filtering equipment has the advantages of simple structure, saving in cost, high filtering air speed, good ash cleaning effect, high purifying efficiency, large treatment air volume, long filter service life, running safety and reliability and high automatic degree.