SU65510A1 - Apparatus for fine grinding, for example, coal for pulverized coal furnaces - Google Patents

Description

Devices for fine grinding are already known, for example, coal for pulverized coal-fired furnaces, in which grinding is carried out "by striking particles of coal moving in a downward gas flow against a firing plate.

The present invention relates to such devices and differs from those known in that the stove is located in the lower part of the duct for the downward flow of GASES and also in that it can be stepped or rotating to remove coal from its particles. centrifugal force.

In the attached drawing of FIG. 1 shows a device with a rotating baffle plate; FIG. 2 - with a stepped plate, the remaining particles from which are removed by a stream of compressed air passing between round stepped plates, fit. 3 depicts a fixed plate, the remaining particles with which are blown away by compressed air leaving a special rotating nozzle.

Through the pipe / (fig. 1 and 2) toT1LIVO or other material to be milled is fed into the system and comes into contact with the conveying and drying medium flowing through the canal. The latter may consist of cold or hot air or short-air mixtures of air with spiked flue gases sucked from the furnace through window 5 and diluted with air coming through window 4. In thief 5, the fuel is mixed with gases and enters a vertical pipe 6, in which, under the action of gravity and downward moving gases, the fuel acquires a living force, ensuring its crushing upon impact with the slab 7. In the separator 8, the dust is prepared and separated from the ground fuel, is sucked by the fan 17 through the sleeve 16 and is fed through nozzle 18 to the furnace 19 or for any other purpose. If it is "details of the supply of dust to the firebox, then secondary air is supplied through the nozzle 20 (Fig. 1). Unfinished pieces of fuel are partially blown off the stove with a stream of gases, partially thrown off under the action of additional efforts created by one of the following methods:

1) The circular plate 7 (Fig. 1) is located eccentrically with respect to the axis of the pipe 6 and the horizontal rotation rotates horizontally at nominal and non-distributive 21 pieces of fuel not blown off from the top 11 | Nlita, do not acquire centrifugal force from it I dump them from the stove.

2) The plate can remain non-motionless (fng-. 3), and b;) asijanis from her pieces of toning n) life; strong and strong) in m1-air, from a fire; 1c holo.vkn 23, butchmn 1NPanie air but

3), being non-independent, can consist of a series of CTyHCueii (Fm. 2) that can be easily dialed, separated from each other by g) annular channels through which the iodide is blown out and; pipe 22 from the outside air and; and - gas, eduivaynlie from the stove remaining parts, u i.

Whacked in neither. a part of the sealer of the idle particle, if it is caused: peoDiDm, the crusher 5 and the sleeve 10 roll into the lower part of the channel //; viutr | And this is the second channel): the same: c m) a distributor 24 (fi1-. d) silt, and the gases (fig. 2) iodized through pipe 12, lifting the crushed toner particles upwards, hence 1U To sleeve 13, they are all entered into the system with a freshly stored one LIV.

When the device of FIG. The 2 stones in the fresh fuel come in the stones and the metal falls into the bottom of the canal. // and are given from him through merit 14 into the bag 15, the fuel itself is blown off into the sleeve 13.

From .itkvmaticheokih existing mills (Kolbauma, Anger, Kprpichn1p ova Mokrp1anskogo et al.), The above-described melnnpa characterized in that, in the vrelSh like) th all existing pnevmo.meliitsah ei.ta m zheeti tor1mozpt .1Y grinding material by way ua nairavlenyyu . to the fender glpte, in the proposed mill mill, the force of gravity contributes to an increase in the vital force of the particles 1 dropping on the stove; This iozt.1 em uses mepegy-e gas velocities to disperse chaCIIN TOiuHusa and so on; 4o pipe 6 b. Lee short; and that one other is related to the improvement: it is with the; iipOTi; B, ieii H systems, and consequently, with the “hey eene”; - AI II times.

In schchphestv.ukltsnh systems voiipani, Criiie 1 unomo:; particles of particles,. C1 is occurring under the action of C1; ly of the tin, and partly 11 | This causes or PS to use both the UI velocity and the UI gases,., Or, and) call the large vertical section of the first dry section; pipes are placed in it to ensure the capture of gas) li () so all the parts 1 n top / n and a.

B, Gagal1O | the system returns; O1Piez for the house 5 part and the parts are not mixed; they are mixed not by iiis, but by top; atom mixing iroizvodpts or Tj / ancnopTcpoM with minimal consumption -; ner; p, plp the same pepmatic Yutem. Since the isec is 150 pp and dc (for n d (small w / w 1 част част част;); it is always the best value for the weight of the weight of the return fuel, the weight of the fresh fuel on the vehicle, the power of the fuel, and the other) Mexainnjeeivini, n priiigshatichiek n () For 1gme return to pxe for dor.ma.chshanp part uphill. There is a lot of energy consumption.

In the existing fields, the input of one person is eager in the direction and: 1 ti, the opposite movement of the transport of gases, which creates a significant value; those;

In the proposed system, the gas is injected in the direction of motion:.: C, what is the resistance of the gas and eliminates the cost of energy savings. With a structural structure, the introduction of fuel into the TIO system in the direction of the pipe axis makes it easy for CiiCTeMv to supply very moist fuel, for example, peat with a humidity of 75%.

Unlike existing pne: mills, in the proposed mill, air jets and the centrifugal force acquired by particles in contact with a rotating baffle plate are used to remove fuel particles from a fixed fender plate. Since the number of delays on the particle plate, generally speaking, is small, the additional consumption of energy for their removal is insignificant.

The water supply of the hot gas through the channels in the slab directly to the grinding site contributes to the suspension of dust in the mill.

Subject invention

Claims (3)

1. A device for fine grinding, for example, coal for pulverized furnaces, in which grinding is carried out by striking particles of coal moving in a downward flow against the breaker plate, characterized in that the plate is located in the lower part of the channel for the downward flow of gases. 2. The form of the device according to claim 1, characterized in that the plate is made in steps. 3. The form of the device according to n. c. 1 and 2, which means that the plate is made rotating, in order to remove the part of the plate from it by the action of centrifugal force.