SU1682859A1 - Sample divider - Google Patents

Abstract

The invention relates to the investigation of technological, physicochemical, and other properties of granular materials and can be used in cutting samples by dividing samples into parts, for example, in geological exploration, mining and smelting industry, and other areas that process granular materials. The purpose of the invention is to increase the productivity and quality of dividing, expanding the scope and mechanization of maintenance operations of the device. For this, the separator is made in the form of a rotor with blades having the shape of nozzles bent along the profile of a logarithmic spiral, rotated against rotation with a center lying on the axis of the rotor, whose constant angle is greater than the right angle at the friction angle of the bulk material. This embodiment of the working body of the divider reduces the speed of the material being divided and prevents its scattering. This makes it possible to increase the frequency of feeding into each of the six sample receivers up to 9,000 microportions of the material to be separated per minute. The divider can operate in the mode of reducing dry samples, suspensions and dry decalcification. To reduce dry samples and suspensions, it is equipped with removable orifice plates and suspension stabilizers. For dry decal and mechanical cleaning, the separation chamber operates in a centrifugal fan mode. 3 hp ff. 5 il. (L

Description

The invention relates to the study of technological, physicochemical and other properties of materials, in particular, devices for cutting primary samples by dividing them into pieces, and can be used in geological exploration, mining, metallurgical, coal, construction, chemical and other industries that process crushed materials with control of their properties and composition.

The aim of the invention is to increase the productivity and quality of the division of dry materials and suspensions, the separation of dust-like particles from the material, as well as the mechanized removal of dust and residual suspensions from the separation chamber.

FIG. 1 shows the sample divider, general view; figure 2 - rotor separator, top view; on fig.Z - the hopper pulp splitter; figure 4 - boot bunker; figure 5 - section aa in figure 4.

The sample divider contains a hopper 1 with a cylindrical neck 2 for removable metering diaphragms 3 mounted on a separation chamber 4, a collector 5 connected by tubular taps 6 to the cavity of the separation chamber 4 and with removable damper 7 or funnel 8. Along the perimeter of the separation chamber 4

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ia..poloA1 1i it and sty up to twelve receiving bunkers 9 to test receivers 10 with airtight lids 11 in cavity times / 1 liter of Measurements A coaxially with loading hopper 1 in insulated - vertical shaft 1 electrolyte v koro drive 13. At its free end - The separator formed by the rotor is rotated. The rotor blade in the form of a patent 14 is fixed on the conical flange 15c inclined towards the receiving bins 9 at an angle to the horizontal, different angle of repose of the dry material (25-50 °). Such nozzles 14 may not be much, while they are evenly Arranged around the circumference in the form of turbine blades and each of them is stopped in such a way that one of its open end coincides with the dosing diaphragm-v g - 1 overlaps its opening, t of the orph, v, n is above the receiving bunker gmp 9 gg, 0oii of each nozzle 14 p cavity rotation according to the equation

l - - - - I f,, .. .. his profile in uOS ft

i oryons of projection on the form logarchfmichesko1 1 gpmr p - a lf, deployed against the BpaiMt-i iis1 separator The spiral curvature of the radius of rotation is determined by the constant value of f At the same time, dry matter particles i oh mhppl 14 For granular materials), rienee 5 mm such CHEGTICHRMI -n W with particle size

1), nus 1 f 1

Dnipro ifi g reple MI. Amegl 4 is made to facilitate the descent of Mci-ppiiapq, p oetino on stalls i 7, YAUNCHLRNNM-- ii ° sdarke 18 When dividing dry r, the EsO / i 5 rob is connected to the dust collector 4 through the damper 7 ), and in pz Ch GMCH bunker 1 ugte- Mahj; r-eg1-. i-, with h dispensing diaphrm m 1 in yu1 f dv ogulok with i.i .. and .-. -, ntsgo diameter

1 hp-im of dusty material .g11h.g L-hcgr g) is connected to the dust collector system and in the hopper 1 a conic insert 19 is installed with a rebar 20 along the generators, creating its “circular gap”. At the same time, in TFUSHRINN of the loading hopper 1, a dialing diaphragm 3 is installed, a drill bar pg is installed in the nozzle section L aval.

When jnenoiiMii suspension is mounted on the collector 5 of the separation chamber 4, a funnel 8 is installed, Q Gorlorin 2 of the loading hopper 1 is fixed with a gap one above the other DRS metering diaphragms 3, made in the form of washers with conical holes. Moreover, the upper dosing diaphragm 3 has conical depressions on both sides, and in the gap between the dosing

the diaphragms are located the head of the stabilizer 21 of the suspension flow, having a mushroom shape fixed with its stand, passing through the opening of the lower diaphragm 3, on the vertical shaft 12

0 electric drive 13

The divider works as follows.

In the division mode of dry samples, the divider capacity is set by selecting 5 metering diaphragms 3 - bushings with a tapered bore of different diameters. Behind each receiving bin 9, the test springs 10 are installed, which are sealed with hermetic caps 11. The loading

 the bunker 1 is filled with the primary sample with the electric actuator 13 turned on by separating and closing the shutter 7. Through the opening of the metering diaphragm 3, the material enters the channels of the sockets 14, due to their

) the slope slides away from the axis of rotation of the separator rotor, where under the action of increasing centrifugal and Coriolis inertial forces moves to the bent part of the nozzles 14 Their cree (1 turn, the material turns the opposite direction of rotation of the separator rotor and equalizes the speed of the material coming out of nozzles 14, with the linear velocity of the

, rotor separator. When these oppositely directed velocities are equal, their resultant velocity is zero, the material is distributed by uniform microportions successively between

U receiving hoppers 9V from which enters the sample receivers 10.

After the dry sample dividing cycle, za- / ynka 7 opens, which transfers the healer's work to the centrifugal valve-icpa mode. The air is sucked into the nozzles 14 and the dosing diaphragm 3 is thrown to the periphery and the cavity of the separation chamber 4 is blown. The dusty air through tubular outlets 6 enters the collector 5, from where it is brought into the dusting system.

In the mode of dry decalcification of samples for each receiving hopper 9 install the sample receivers 10 with hermetic

lids 11. The primary breakdown of the filling hopper 1 with a conical insert 19 is performed with the separator drive 13 turned on and the open bottom 7. The divider operates in the centrifugal fan mode. The air sucked into the gap between the hopper 1 and the conical insert 19. captures the material coming out of the opening of the conical insert 19, supplies the sro with the dosing diaphragm 3 - Laval nozzle Here, due to the acceleration of the air jet, the separation takes place - the air from the light shallow the dust is sucked in by nozzles 14, passes unhindered through the channel and enters the separation chamber 4, from where through the tubular taps 6, the collector 5 and the flap 7 enters the dust collection system. Larger particles, as well as in the division of dry material, fall into the sample receivers 10, which allows to combine the division of dry samples with the simultaneous removal of dust-like particles from them. The damper 7 regulates the particle size of the emitted dust, which is proportional to the air flow.

In the mode of dividing the suspension under the receiving bins 9, the sample receivers 10 are installed, and a funnel 8 is connected to the collector 5 of the separation chamber 4. The filling of the loading bin 1 with the suspension is made with the separator actuator 13 turned on. The passage through the opening of the upper metering diaphragm 3 of the suspension falls on the head of the rotating stabilizer 21. Here it is twisted. The solid particles in the slurry are thrown by centrifugal forces to the walls of the neck 2 and are concentrated along its perimeter by a uniform layer converging conically down to the smaller opening of the lower metering diaphragm 3, from where they are sucked into the channels of the separator nozzle 14. Thus, the channels of the separator nozzles 14 simultaneously receive the same amount of the solid phase of the suspension, which is uniformly distributed by microportions successively between the receiving bins 9 and the sampling receivers 10.

After dividing the suspension, the cavity of the separation chamber 4 is washed by supplying water to the funnel 8. The passage through the collector 5 into the tubular outlets b, water enters the nozzles 14, is sprayed by them, washing the cavity walls and drains through the receiving bins 9 into the sampling receivers 10.

In order to prevent chaotic spraying of suspension particles and scattering of dry material during high-frequency division, mechanical cleaning and washing of the separation chamber 4 in the separator using centrifugal and coriolis inertial forces, frictional force and air jet energy. This is achieved by a combination of basic and additional features, mainly by signs of a rotor reb-type-1-form and profile of its features.

Making rotors of the rotor in the form of nozzles 14; em use air energy with g; woo as an extra driving. The air flow loosens the material to its compaction against the walls of the canal. For dry declarations, the material air flow is basic. 1; transporting agent for dust particles.

By bending the nozzles 14 along the profile of the logarithmic spiral and by combining the axis of rotation of the separator with the center of rotation of this spiral, a constant angle between the rotation radius — the line of centrifugal forces and the wall of the bent portion of the nozzle 14 is provided. This allows determining the frictional properties of the metal of the nozzle 14 when determining its curvature. , and the material being separated, and thus ensure that it is free to move along the curved channel in the presence of centrifugal inertia forces. This condition corresponds to the bend of the inclined nozzles 14 of the rotary separator

p equation - №. At the same time, the value of VsLJo ЈЈ

f characterizes friction of smaller, rougher particles. The centrifugal acceleration that the material receives in the channels of the nozzles 14 is inversely proportional to the coefficient of friction. In connection with this, coarse particles pass more easily through the curved channel. Therefore, the bending of the nozzle 14 taking into account the friction of small particles ensures unhindered passage of all material classes through the channel, prevents dust from depositing in it, while ensuring the maximum possible flow reversal and reducing the resulting velocity of the particles from the separator nozzles 14. In the radial section of the channel of the nozzle 14 of length a, where the friction is insignificant, the material accelerates with ever-increasing acceleration. When its speed reaches a value that is adequate (taking into account the curvature of the channel) linear velocity from the open end of the nozzle 14, the right part of the channel ends, the material falls into the curved part of the channel where acceleration stops. Under the action of centrifugal force, the material is pressed against the channel wall and the stronger, the steeper its bend. With the increase of the normal force, two oppositely directed forces appear - a driving force contributing to the movement of the material through the channel, and a friction force interfering with this d-mt-nick ;. As the angle between the lines of a gentle centrifugal and normal syngmi is equal to /}, the driving force and ci / i. i4 grhenil r-shny l compensate one another. Therefore, in terms of and -; - the kicked section of the canal and the cuticle changes mainly in inertia. However, its speed is maintained both by the air flow and by the Coriolm type inertia directed perpendicularly to the material velocity vector in the direction opposite to the line of action of the normal force on the side of the bend of the nozzle 14. As a result of this friction on the curved portion of the canape decreases Inhibition of material flow does not occur in the case when there is no air flow.

Performance prof. Pfu ov 1-1 g, taking into account natural l penpoy facts hp lpch -, g. Latri particles: l:; f niv with walls of the channel, obbp: e ig and g beats ;;;; ny razpprot ps something,: uh, chtg gak; :: .. :: prop-h, tdy:.; - his brakes en zzku / Ormpap. anagt and gobk.op tsp,

Izp / if} patruGNgsh 14: - cir. ifvw iiv. hh: -.

PROPERTIES CV XO G ITER ZNAE iVV.r.lH ..HV: prepares rcHriOf1. on Ks-ndn:. pemmia to ozhl: Ј OHS: e toniv about “l; .h :: - channel.

PRI p.PCHCH PG (P gFGg. L I j4) 14, -; LOORONI, PROF M L-i ut iiy iO О

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 tg og; 1 MOMi-mc.: S i; s; i; i .if C; v I: ... catfish with uchasch; . t Org; mt -:; .- :. lo, especially him. classes. 1AI 1- particles of the backside;:. 4 is given at the walls, under the rule of () (cnn yn, iOY:;: Tr.; -:. pstg; n :: -: 0 h. i.-iH4 i. In tn {.) .;

.. JH- r -.;,; 4ij ;, j, V. H |; About G. i. i, l: i 0 H .V: p; J; - 1 ICM ... (.iCiaH i; ;;:. H.iii .Ц; -:

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mch holoi-- .. 14, 1 (..;.,: 1: “:;. -

g: -1cheg, H.- p..M-jOi-P-ii-i lO; HdpViur; Oc-: ".- П: 1ЛНг ОЙТ r-iaCCl-i (.1Hr .00" pJiMM,,:

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I i -.-- n; ) K) fr PJ; G TILL 1- C.V. iV: ff:.:

o, 1 bunkers 9 obosiichiee dachi1;:, in iivic nteril e of the channel’s start, where see the size of the centrifugal; c -:.: nodos atomic length; l. mpg & p -. ;: L | 1 is. .pol surge surge Pig reduction 14 I

and-; b1f -; - FROM j.ifli-iMf.1) feMG1U.:. (.

At a lower value, coal and slippage are difficult, there is a gradual accumulation of dusty BLN.TCC at the beginning of the channel, which requires periodic cleaning. especially when reducing samples of fine material. With an increase in the angle a, the work of the distractor does not improve, however, its gabiritual dimensions unjustifiably increase the occupancy. . The slope of the channel also plays a positive .i; (and a significant role in movement in it — the galo trial, the sediment at the output cover — iTs, that:.. Here appears to be yu ii, moving; huytey, directed to a crow of exchange bunkers 9, a hindrance.

Needle divider allows ff ... ;; . to regulate the frequency of the co- / el x- -: irvj; ; :; : SCHRT Mr. Szmpneni SCS; to increase the growth- - ieoMTc ii; -.-; dg, iond receivers;:; -; erg lg. i; p ;. Atoy m & filing feed mikrs- j .fi ji-: i;); .-. h ;; -,; yr .-.) The tenant 10 may: - d) d) 000 in-m production | -1-: / ,. finr.v :. , .v bOO-600 i: r / 4 (phi reduction in .. -CMI SV-CI .I o.iu; 2-4 times.

Ф f, fj; - /, у fi У i.3.; 6 p 6 i LH and h i JJc - .if9. I rafr. Nkmmchayuschy boot - ..y G y: mseo with iii-; ii / ;: i / ipH4C (| Oh throat, .r- 1yy ;; 15- ;.С;: separator with angled-1

:. iti .-:; .- d yi HOi .::. -.- SI: lISTI PETrubCDMI

. FPA: zopshk chnyy axis) rotation, pro-. ,, g; t l m; E and about sh; and with that.

l:.: -:.: P: ;;:;,. Pr.T PODODITLNOSTI M

; ;; p-- dg / o - ;; -;:. ok with 1zbsen section :-; -: .- .. dgr yCTSiiCtiK -i divide in it; v g HI :; e; h,: E1-; .Г | ; .-; her pro5 receivers

. ,, s -jyniicp is located coaxially; but c, i - ,. rv ;;, .. ;; noi M, r ;;. i, with the nozzles being-, i ..-: ./ i - i4 1--. / i.1,; :; shoulder1 ns-pfeidnonnonvertm-. ; 1 ng, drive and made curved rODi - onTaJibs; ofl projection along the profile of the .SP - / ir gneskg-espiralm, deployed against -.-, L-pvn,: - iH :: - ip-jUi.er yiV separator, and tsi -..., gory i ..ibvi :: rj vcianob -:; . ..n-y.pi - -.- with a metering diaphragm,

- ..:.: pchmn mountains (G; -., uii jjtr, fo nairubkosmeme- -;. h;,;, f-:; u.iC:: to the ral. e ittep and overlap: - -:. ; ms ::: 1; e dosage diaphragm.

. I .. samples .iO ii. l, O T L M C and K

; . ..: l;.: i. V,) fo, s; s / 1 mekhnizirovan-. ;; .., g. - -: H..t mon:.;, 1 n: i separate ka-... ;;,. ; ;;:; a s; -. ..- and :: sa collector,

 Dv: m "e., Rob mo mo p.1, about tl and h and y. fi ii with heme, by, s (. little discharge mz; .n -; .. from the dust particles,.-fuzzy Yy 5uk; others is provided with a conical: .., ..;} ;; s;:; its height Kru- ("i ;.; -rro: .- dispensing diapha -i; ::, h ,;; r :: e ;; -; n to the Laval nozzle, m

A Sample Divider under item 1, I distinguish n, i, so. that, for the purpose of DR.k and. i - „penzy and mechanized; Separating chamber, dosing e p, d (. The screen is made in the form of one installed: -m above the other with a gap of two balls with openings, and a cylindrical: ke neck of the loading hopper with a gap of JIJH between

washers of centrifugal stabilizer of flow of suslentia made in the form of grig bog lirach. 1 is CLEAR} i with a rack that passes through the opening and is coaxially aligned with i. Of rotation on the shaft of the drive. With the collector of the separating chamber with a supply box for water supply.

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Claims (4)

1: there is a circular gap at its height, while the metering diaphragm is made about the shape of the LavaJaya nozzle. 1, sample divider; including a loading hopper with a cylindrical neck, a spreader with installed nozzles of rotation angle, a drive with a vertical axis of rotation, are suitable for that, in order to achieve better performance and quality of division, it is equipped with a separation camera for installation and a separator for securing sample receivers on it, the loading hopper is located coaxially with the drive itself, and the splitter nozzles are mounted directly on the vertical drive shaft and are filled with curved horizontal projections along the profile of a logarithmic spiral unfolded against the direction of rotation of the separator, and qi is ness ;; the neck is equipped with a valuable signal for the installation of its dividing diaphragm, the end face of each nozzle is compatible with the axis of rotation of the separator and closes the opening of the metering diaphragm. '' 2. Divide. ^ Samples by π.'ΐ. I distinguish; with this. that, for the purpose of mechanized dust removal from the separation chamber, it is equipped with a collector. 3. Separate samples according to π. 1, about t and h and toil! and with the fact that, in order to distinguish from 36 yzzdaleamdgs; material of dust particles, the hopper is equipped with a conical 4 The sample divider according to claim 1, characterized in that, in order to divide the suspension samples and mechanically wash the separation chamber, the metering diaphragm is made in the form of mounted one on top of the other with a gap of two washers with conical holes, and a cylindrical the neck of the loading hopper is equipped with a centrifugal suspension flow stabilizer located in the gap between the washers, made in the form of a mushroom-shaped head with a bottom passing through the hole <: a, mounted coaxially with the axis of rotation on the drive shaft, at o ^ the collector of the separation chamber is equipped with a funnel for supplying water.