Centrifugal dust separator
(57) Abstract:The invention is intended for dust. Centrifugal dust separator includes two stationary concentric cylinders and conical bag. Between the cylinder walls is placed a rotating mesh reflector, made in the form of expanding down the cone, which includes a negative potential, while the outer stationary cylinder and a dust collector kasemset. The device provides high efficiency dust. 1 Il. Known electrostatic cyclone, in which is mounted a stationary mesh electrode having the form of a cyclone and use triboelectrical to improve the effect of dust (Veselov O. A. Design of ventilation systems enterprise storage and processing of grain. - M, ear, 1974, S. 101).The effect of dust rises, but does not reach the level of dust fabric filters.Also known centrifugal cyclone separator(prototype) used for dry cleaning air from all kinds of dust (ibid, S. 88) and includes two stationary concentric cylinders between which rotates ozdust fine dust.The objective of the invention is to increase the effect of dust. This task is solved in that in a centrifugal cyclone separator comprising two stationary concentric cylinders and conical bag, between the cylinder walls is placed a rotating mesh reflector, made in the form of expanding down the cone, which includes a negative potential, while the outer stationary cylinder and a dust collector kasemset.The drawing shows the inventive cyclone separator, where:
1 - body - outer stationary cylinder,
2 - bolt
3 - conical bag,
4 - rotary shutter,
5 - insulator,
6 - inner stationary cylinder,
7 - outlet,
8 - bearing,
9 - Val
10 - insulator,
11 - bearing,
12 - cross,
13 - net reflector,
14 - cone,
15 - cross,
16 - nut,
17 - wheel,
18 - net,
19 - inlet pipe.The inventive cyclone separator consists of a metal housing 1, an outer cylinder, to which the bottom by means of fixing bolts 2 attached conical bag 3 ending gateway shutter 4. At the top of the housing 1 through the insulator 5 to discontinuous insulator 5, continues above for attaching the pipe 7, through which the cleaned air exits the cyclone separator. Inside the cylinder 6 passes the shaft 9, which is interrupted by an insulator 10 and mounted on top of the bearing 8, and below the bearing 11, which is attached to the crossbar 12 is fixedly connected with the cylinder 6. On the outer side of the cylinder 6 on the wheels 17 rolls rotating mesh reflector 13 with cone 14 and the grid 18. The lower end of the shaft 9 is fixed on the cross-piece 15 by a nut 16. The air in the cyclone separator flows through the inlet 19.The device operates as follows. Net reflector 13 is unwound in the direction of the incoming through the inlet 19 of the air flow with suspended particles of dust, using a turbine effect or an additional drive. At the same time on the reflector 13, its cone 14 and the grid 18 and a negative potential is applied through triboelectrically or from an auxiliary generator, and a housing 1 and a conical bag 3 are grounded. The air flow rotating in a spiral, it goes down. The inner part of the flow with suspended dust particles intersects the rotating and charged by the reflector 13. When dust particles get additional forces on the layer, and due to the charge of electricity. Thus, using the summarized effect of the centrifugal separator and the electrostatic precipitator. The cleaned air through the static pressure of the incoming air flow passes freely through the mesh reflector 13 to the inner cylinder 6 and it gradually slows down. The air with increasing concentration of dust moves to the inner surface of the housing 1 and there is also inhibited. Because of the rotating reflector 13 is made in the form of an expanding cone, most of the flow is forced to pass through. The inner part of the flow between cylinder 6 and the reflector 13, slowing movement and cleansing that comes through the cross-piece 12 into the internal cavity of the cylinder 6 and then through the pipe 7 is output to the outside. Suspended dust particles deposited in conical bag, to prevent the output air flow is additionally repel the negatively charged surface of the cone 14 and the grid 18, and then output via the rotary shutter 4.The proposed design provides a high level of purification of the air flow from the dust particles of different sizes. Centrifugal dust separator comprising two nepodvizhnye placed rotating mesh reflector, made in the form of expanding down the cone, which includes a negative potential, while the outer stationary cylinder and a dust collector kasemset.
FIELD: purification of the gas mediums from impurities.
SUBSTANCE: the invention is pertaining to the device of purification of gas mediums with impurities and to a transportation device equipped with the device of gas mediums purification, in particular, to the internal-combustion engines exhausted gas mediums purification. The offered device contains at least one corona-forming electric filter with a device of exhausted gasses withdrawal and a collecting device. According to the invention the collecting device contains a set of cavities for trapping impurities in the gas medium, such as the internal-combustion engines exhaust gasses impurities. The transportation device of withdrawal of impurities from gas medium represents a set of geared plates, such as spiders for connection to a high-voltage circuit. It is preferable, that the collecting device has a separator made in the form of interlacing from a metal wire. It is Optimal, that the given device has an oxidation catalyst and-or a mechanical continuously recyclable screen and-or a means of an suction. The device is compact, cheap and manufacturable.
EFFECT: the invention presents a compact, cheap and manufacturable device.
17 cl, 3 dwg
FIELD: mechanical engineering.
SUBSTANCE: cyclone-type dust catcher has first cyclone for centrifuging of dust from drown-in air, at least one second cyclone for separation of dust from air directed through first cyclone, and electrode unit positioned in at least one of said cyclones and comprising first electrode located within discharge channel of first cyclone, and first conducting member attached to inner wall of first cyclone.
EFFECT: increased efficiency in collecting of finely dispersed dust.
13 cl, 6 dwg
FIELD: dust catching technique used in chemical, textile, food-processing, light and other branches of industry for purifying of dust-laden gas.
SUBSTANCE: electric cyclone has casing, peripheral gas flow inlet formed as inlet branch pipe, hopper, and discharge branch pipe for discharge of purified gas. Central electrode is extending through volute and exhaust pipe of cyclone. Peak-shaped corona electrodes are located in lower part of central electrode. Upper part of central electrode with needles is fixed in supporting isolator placed within heated isolating box. Openings provided through isolator cover are designed for sucking of outside air. High negative potential is supplied to corona electrodes system through high-voltage bus and open-end isolator. Cyclone casing is earthed. Transition branch pipe is positioned between isolating box and volute.
EFFECT: increased efficiency and enhanced reliability in dust catching procedure.
FIELD: engines and pumps.
SUBSTANCE: invention relates to the devices intended for purification of sanitary and vent air emissions and smoke fumes resulted from finely dispersed solid and liquid phases and can be used in chemical, petroleum, metallurgical and other industrial branches, as well as in gas purification processes. The cyclone consists of a top vertical cylindrical casing with a tapered bottom and a cover, inlet branch pipe arranged tangentially at the casing top, an exhaust pipe arranged axisymmetric with a cylindrical case on the cover, a branch pipe to remove entrapped dust at the tapered bottom lower part. The exhaust pipe fastened to the dielectric material ring accommodates a tubular electrode moving vertically and linked to the shaking mechanism. An ioniser tube is arranged axisymmetric with the tubular precipitation electrode.
EFFECT: higher degree of entrapping fine fraction particles and drops.
FIELD: engines and pumps.
SUBSTANCE: device contains a cyclone casing, air inlet pipe, air outlet pipe, grounding element arranged on the cyclone casing inner surface, ioniser tubes arranged on the air outlet pipe and a high-voltage power source connected with the air outlet pipe. The air outlet pipe is a current-conducting one, the ioniser tubes being arranged on the said pipe at the section the pipe is connected to the cyclone casing top part.
EFFECT: keeping the particles electrical charge invariable even at a high flow velocity.
5 cl, 4 dwg
FIELD: power engineering.
SUBSTANCE: invention relates to the field of gas cleaning with high concentration of fine-grained dust and may be used in thermal power engineering, metallurgy, industry of construction materials, chemical industry and other industries. Device consists of vessel with electric filter and textile filter installed in it along with gas travel. Ratio of deposition surface area in collecting electrodes of electric filter and filtration area of textile filter equals 0.1…0.8. Collecting electrodes of electric filter are installed with interelectrode distance of not more than 500 mm, and speed of textile filter filtration may amount to 0.6 m3/m2 min to 1.8 m3/m2 min.
EFFECT: increased efficiency and reliability of equipment in process of gases cleaning from fine-grained dust of high concentration, including difficult-to-catch dusts, for instance with high specific electric resistance.
3 cl, 2 dwg
FIELD: technological processes.
SUBSTANCE: method for modernization of an electrofilter consisting of several fields is carried out by installing horizontal rows of filter elements facing the gas flow, a regeneration system with distributing pipes installed horizontally, and a clean gas chamber with a hose plate installed vertically, in the last field of electrofilter. In this case, the switching off filter elements from gas flow for regeneration is carried out by groups of horizontal rows of filter elements. Disconnection of groups of elements is carried out alternately from top to bottom, and regeneration of the rows in each disconnected group is carried out alternately from the bottom up. The device for the modernization of electrofilter includes the installation of a part of the last field of a hose plate with horizontal rows of filter elements, placed edges upstream to gas, a regeneration system with distributing pipes installed horizontally, and clean gas chambers. Wherein, the clean gas chamber along the height of the hose plate and the number of groups of horizontal rows of filter elements is divided into sections with a separate gas flow outlet.
EFFECT: modernization of existing electrostatic precipitators in the same dimensions of the body of the device with simultaneous increase in efficiency and durability of the filter part of the electrofilter.
8 cl, 3 dwg