46results about How to "Small air volume" patented technology

The invention discloses a circulating sludge biological fermentation tower which comprises a tower body, an openable tower cover, a storage tank and a plurality of rotatable fermentation devices, wherein the openable tower cover is arranged on the top of the tower body; the storage tank is arranged at the bottom of the tower body; the rotatable fermentation devices are arranged in the tower body in parallel; the fermentation devices divide an inner cavity of the tower body into a plurality of layers of fermentation bins along the axial direction; the lower part of each layer of fermentation device is provided with a ventilating oxygen supply pipeline communicated with a blower; the upper part of each layer of fermentation device is provided with an air outlet pipeline communicated with aninduced draft fan and a monitoring device; the monitoring device is controlled by a control room; and a mechanism for driving the fermentation devices and the tower cover to move, the blower and the induced draft fan are all controlled by the control room. The invention also discloses a circulating sludge biological processing system and a processing method. By the circulating sludge biological fermentation tower, the circulating sludge biological processing system and the processing method, industrial biological fermentation desiccation treatment can be continuously and stably carried out onsludge under the conditions of high efficiency and low energy consumption.

The invention belongs to the technical field of petrochemical engineering, and particularly provides a catalyst unpacking and conveying and dust removing system and method for an FCC (Fluid Catalytic Cracking) device. The catalyst unpacking and conveying and dust removing system comprises a dustproof unpacking system, a lifting system, a dust removing system and an automatic control system. With the adoption of the system and the method provided by the invention, the non-dust unpacking and dense phase automatic conveying of a catalyst can be achieved; the traditional conveying method of steam vacuum pumping is completely removed; and meanwhile, an efficient catalyst dust removing system based on a 316L stainless steel hybrid knitting filtering bag is adopted to replace the traditional cyclone separator; the dust removing efficiency can be increased to 99.99%. The system and the method have the advantages of low catalyst loss and relatively low running cost; and the method is a catalyst conveying and powder dust removing technology with a wide application prospect.

A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.

A bag system for the collection and sampling of a biological fluid such as blood is described. The system may include a fluid collection bag and a first tube connected on one end to a collection means and on the other end to the collecting bag. It may also include a flexible sampling bag defining an internal volume having a bottom side and an introduction side which is opposite to the bottom and has an inlet orifice. The system also has a second tube, a first end part of which is connected to the first tube and a second end part of which is inserted in the inlet orifice of the sampling bag, so as to extend inside the sampling bag over a distance of between 25% and 60% of the distance between the bottom and the introduction side of the internal volume of the sampling bag.

The invention relates to a method for preparing elastic and glossy dacron drawing yarns with potential crimps. A glossy polyester melt is used as a raw material. The method comprises the steps of 1, conveying the raw material to a spinning box, and forming melt-shaped fibers after measurement and the filtration of a spinning assembly; 2, after solidifying the melt to as-spun fibers, dividing the fibers into two groups, cooling one group of fibers by a side blowing device, arranging one group of heating devices in front of an air inlet of the side blowing device, arranging one group of steam pipelines in the heating devices, controlling an air temperature between 32 DEG C and 40 DEG C, controlling a side blowing speed at 0.5-0.8 m/s, and conveying the other group of fibers to an air-free device, wherein the length of an air-free zone of a spinneret plate is 150 mm, and the air pressure of a side blower is set to 480-600 pa; and 3, after applying oil with an oil nozzle, respectively combining two groups of filaments with crystallization difference by a pre-interlacer in a one-to-one way, then increasing interlacing points by a first hot godet, a second hot godet and a main interlacer, and finally winding and molding by a winder head.

The invention discloses a combustion-supporting method of a rotary cement kiln burner oxygen enrichment device. The rotary cement kiln burner oxygen enrichment device consists of a kiln head outer layer pipeline, a kiln head outer layer air inlet pipe orifice, a kiln head coal layer current pipeline, a kiln head pulverized coal wind current pipeline, a kiln head coal wind pipeline, a kiln head inner wind pipeline, a kiln head inner wind air inlet pipe orifice, a kiln head oil pipeline, an oil nozzle, kiln head refractory concrete and a kiln head oxygen enrichment air flue, wherein the oxygen enrichment air flue is arranged between the kiln head outer layer air inlet pipe orifice and the kiln head inner wind air inlet pipe orifice; an air inlet of oxygen enrichment is preserved in the pipe end of the kiln head oxygen enrichment air flue in the kiln head outer layer air inlet pipe orifice; when the oxygen enrichment in the kiln head outer layer pipeline and the oxygen enrichment in the kiln head inner wind pipeline enter a rotary cement kiln together with pulverized coal wind current simultaneously, the temperature of a combustion field of the rotary cement kiln input with the oxygen enrichment can reach over 1700 DEG C, before free carbon in the combustion field with the temperature of over 1700 DEG C forms black smoke, the free carbon is thoroughly burned, and the free carbon becomes combustive fuel; meanwhile, the clinker catalyst of cement is subjected to oxidation combustion by the input of the oxygen enrichment; when the temperature of the combustion field is over 1700 DEG C, CO in the combustion field is burned, and the emission of NOx is reduced by 35%.

The invention relates to a sound dampening device (1) comprising a frame (2), a rear layer (4) and a front layer (6) arranged on opposite sides of the frame (2), such that the frame (2), the rear layer (4) and the front layer (6) forms an enclosed space, wherein a first sound absorbing layer (8) is arranged between the rear layer (4) and the front layer (6). A cavity (10) is formed between the rear layer (4) and the first sound absorbing layer (8) and an air purifying device (12) is arranged in fluid communication with said cavity (10), such that purified air from the air purifying device (12) is supplied to the cavity (10) via an inlet (14) and is discharged through at least one opening (16) in the first sound absorbing layer (8) and at least one output zone (18) in the front layer (6).

The invention belongs to a household air purifier. The household air purifier consists of a machine body, a weak current plate and a strong current plate, wherein an upper centrifugal wind wheel and alower centrifugal wind wheel are separately driven by an upper motor and a lower motor; an Archimedean spiral upper partition board is arranged at the upper part in the rear space of the machine bodyaround the upper centrifugal wind wheel; space between the Archimedean spiral upper partition board and the periphery of the upper centrifugal wind wheel forms an Archimedean spiral upper air duct; an upper air outlet of the Archimedean spiral upper air duct is located at the upper end of the machine body; an Archimedean spiral lower partition board is arranged at the lower part in the rear spaceof the machine body around the lower centrifugal wind wheel; space between the Archimedean spiral lower partition board and the periphery of the lower centrifugal wind wheel forms an Archimedean spiral lower air duct; and a lower air outlet of the Archimedean spiral lower air duct is located at the side end of the machine body. The household air purifier has the advantages of small size, small air losses, large air output, reasonable filter design, high purifying efficiency, no noise, convenient and rapid filter material change, smooth air supply, high purifying efficiency and great use effect.

The invention relates to a coal-based methanol-ether fuel additive based on chemical by-products and application thereof. The raw material formula comprises the following components in parts by weight: 50-100 parts of a first alkyl alcohol monoalkyl ether, 50-100 parts of a second alkyl alcohol monoalkyl ether, 60-120 parts of peri-acid, 60-120 parts of Laurent's acid, 5-10 parts of nanocrystalline metal oxides, 1-5 parts of an emulsifier and 500-1000 parts of polyhydric alcohols. With the adoption of a specific formula, particle morphology of pulverized coal can be improved, flowing smoothness of the pulverized coal in a pulverized coal injection process is promoted, and stable pulverized coal combustion is guaranteed, so that the air amount of a primary air fan can be reduced, the cold air entry quantity is reduced, and the aims of saving coal and reducing nitrogen are achieved; and moreover, the fuel additive has the advantage of wide adaptability, can be applied to cement plants, power plants and other industries in which coal serves as main fuel, and is applicable to different coal types such as fault coal, blind coal, bituminous coal and high-sulfur coal.

The invention provides a silencing structure suitable for a drying air duct of a washing machine. The silencing structure is arranged on the drying air duct located at the downstream part of a fan; anair inlet of the drying air duct is connected with an air outlet of the fan; an air outlet of the drying air duct is connected with a drying barrel; the silencing structure comprises an outwards protruding cavity formed in the upper wall surface of the drying air duct, a micro-perforated plate sealed at a cavity opening of the cavity and a sound insulation layer located on the rear side of the micro-perforated plate and laid on the inner wall of the cavity in a manner of keeping a preset interval from the micro-perforated plate. The invention further provides the washing machine provided withthe silencing structure.

The invention belongs to the field of cement sintering equipment, and particularly relates to a vertical cement clinker grate-type particle grading cooler. The upper layer of the cooler is a wicket cover; a fine material cooling area is arranged on the lower part, close to one side of a rotary kiln, of the wicket cover, a coarse material cooling area is arranged on one side of the fine material cooling area, and the fine material cooling area and the coarse material cooling area are separated through a separating cooling wall; a two-stage screening grate plate for filtering clinkers is arranged at the upper end of the fine material cooling area in an inclined mode; a secondary cooling area for secondary cooling of all falling materials are arranged on the lower layer of the cooler, the secondary cooling area comprises a plurality of material falling ash buckets arranged at the bottom end of the cooler, and the cooled clinkers are finally collected through the material falling ash buckets into a drag chine conveyor on the lower part of the cooler. According to the vertical cement clinker grate-type particle grading cooler, the clinkers are cooled respectively in grades, the good heat exchange effect can be achieved, meanwhile the material layer obstruction of the clinkers is lowered, and the purposes of energy saving and consumption reduction are achieved; and the process of countercurrent flow of the clinkers and air for two times is achieved, and the cooling effect is good.

The invention discloses an air outlet structure of an electronic toilet stool drying device. The structure comprises a shell and an air outlet channel formed in the shell, and an air inlet and an air outlet are formed at two ends of the shell. A first separator is inwards arranged in the shell along the air outlet channel; and the first separator and the inner wall of the shell form a closed cavity. By means of the closed cavity formed by the first separator and the inner wall of the shell, a noise generated in the device can be effectively isolated, and the user experience is improved.

The invention discloses a powder coating sheet material automatic feeding mechanism, relates to the field of machinery, and in particular relates to the manufacture technical field of an automatic feeding mechanism. The powder coating sheet material automatic feeding mechanism provided by the invention comprises a material receiving hopper comprising an upper part columnar hopper body and a lower part conical material hopper body; the lower end of the lower part conical material hopper body is matched and connected with a feeding machine; the outlet of the feeding machine is connected with a material charge pipe; an outlet end of the material charge end is provided with an air classification mill; the air classification mill is provided with a material intake pipe; and an outlet end of the material intake pipe is connected with the material intake pipe. According to the powder coating sheet material automatic feeding mechanism, sheet materials can be directly delivered into the air classification mill for milling without being transported manually; the production working procedures are reduced; the labor force is reduced; the production efficiency is improved; meanwhile the problem that materials are polluted and wasted when sheet materials can fall on the ground due to manual material charge is solved.

The invention discloses a pneumatic holder type butterfly valve which comprises a valve body, wherein the bottom of the inner wall of the valve body is rotatably connected to a lower valve shaft; thetop of the lower valve shaft is connected to an upper valve shaft through a connecting pin. A twisting sleeve twists to drive a rotary rod to rotate, so that the upper valve shaft and the lower valveshaft are driven to rotate, and thus, a valve plate is driven to rotate until linear motion is converted into rotational motion, and opening and closing of the butterfly valve are accomplished; and meanwhile, the volume of a gas cylinder is small, number of pistons is small, friction resistance is small, torque is small, parts are fewer, and opening-closing is flexible; after a numerical-control machine tool appears, the pneumatic holder type butterfly valve has the advantages of being low in production cost, compact in structure, attractive in appearance, and the like; besides, a pressure alarm mechanism can be arranged for detecting pressure inside a pipeline and the valve body; after the pressure reaches a pre-warning value, warning prompt is emitted, so that the pipeline and the valvebody are prevented from being damaged, and thus, actual use is facilitated.