DE1919888A1 - Method and apparatus for treating solid material in the form of particles or fibers - Google Patents

Description

The invention relates to a method and a. ne device for treating solid material in the form of particles or fibers with a pressurized gas in a chamber that passes through outer and inner, axially aligned surfaces of revolution

is bordered. The outer boundary surface has a Jtfndabschnitt with a relatively small diameter, which forms an outlet for the comb: j /, and the inner boundary surface is conical, and its iündabschnitt with The reduced diameter is opposite the chamber outlet at a distance »In the chamber is compressed gas in the form of one or more limited streams or rays introduced and at a point in initial planar Jüingri'ff brought with one of the boundary surfaces, which in the

909887 / 13S1

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1919859

stood from the chamber outlet along a line which is arranged obliquely to the axes of the interfaces, in order to achieve a gas flow distribution in the Kanuner that is favorable for various material treatment processes is. "

The invention relates to methods and devices for treating material in the chamber by directional Compressed gas jets. The device used according to the invention is partially in the simultaneously filed application about a "method and apparatus for Dispensing controller GasYOlumina "described but not specifically claimed.

In particular, the invention is directed to a To create a family of material handling devices, which can be used in a wide variety of material treatment processes, and the aim is to use the solid material either in particulate form or in fibrous form by directed currents or jets of pressurized gas move.

According to the invention the device comprises a family of Devices which form material receiving chambers, each of which is characterized by "axially aligned, outer and inner limiting surfaces of revolution, the outer limiting surface forming a chamber outlet and the inner boundary surface is conical

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and ^ inen iSndab section with reduced diameter, which is opposite the chamber outlet at a distance. . In every device, the material treatment in the receiving chamber is also effected by introducing one or more limited streams or streaks of pressurized gas into the chamber in areal engagement with one of the interfaces in such a way that the delimitation surface works in such a way that it at least initially the gas along defined lie passes the comb outlet, while the other boundary surface serves to limit di "expansion of the gas introduced or to control and prevent the occurrence of ^ll bypass" -Ströii! ungszonyn within the Aufnähmekammern or decrease. the Gas introduced into the receiving chamber can be inert or interact with the material being treated, depending on the process for which the devices are to be used, and can be below any desired operating temperature.

The invention preferably varies in each embodiment the cross-sectional area of the reception chamber for the Material of minimum values besides the surfaces of the gas jet inlets and the chamber outlet up to a maximum Value of the area of the reduced diameter end portion of the conical inner interface. This' structure allows a maximum expansion of the compressed gas in addition to the reduced diameter end portion of the inner interface, where it has been found that sxe

■■ '■■ - - ■' \ ^ S 8 8? / 13 9 1 ■ '- ■■ - ■ - - ^k ~ ■?

BAß QRlGtNAL

exnen maximum surface contact of the compressed gas with the treated material.

In one embodiment of the invention, at least a limited flow of pressurized gas into the receiving chamber introduced in initial face contact with the conical inner interface along a line sloping to the interface axes. -

In a second embodiment, the outer rotary P is bounded by the rotation of a line with

a compound curvature about the interface axes, the respective ends of such a line being parallel to those axes and defining first and second end portions of the outer interface. D _e r first end portion of the outer boundary surface is disposed adjacent the base portion of the tapered inner periphery, and the second .widabschnitt the outer Bbgrenzungsflache forms a KammerauslSß. In this embodiment, at least one stream or jet of pressurized gas is directed initially in areal engagement with the first section of the outer boundary surface along a line which is inclined to the axes of the boundary surface. .

In each embodiment, the line is preferably along which the pressurized gas flows are directed into engagement with the corresponding delimiting surfaces, also like this

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as close as possible to an ee _f which is parallel to such a surface at the point of initial engagement.

Any of the described embodiments can be used to treat material received in the chamber either intermittently or continuously. If intermittent treatment is desired, a measured amount of material is initially introduced into the receiving chamber and subsequently introduced gas jets are used to treat the material and then spray the treated material out through the chamber outlet. If a method of continuous material treatment is desired, the apparatus can be modified by providing a material inlet passage terminating at the reduced diameter mouth portion of the inner interface and being aligned with the chamber outlet. The material to be treated and the pressurized gas are then simultaneously and continuously introduced into the receiving chamber and let out through the chamber outlet. In order to illustrate the / general utility of the invention, various material treatment methods are described. In a first method the material is to be treated in the form of a powdery F _e ststoffes, and there are rays pressurized inert gas used to verströaen to the powdery solids, and thereafter expel the solids from the receiving chamber in a fluid stream. This procedure is

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1819889

generally described in the application filed at the same time so that it can be used in the application controlled doses of powdered drugs in an inert carrier gas used in the treatment of humans and animals, with particular reference to the treatment of bovine mastitis, which occurs in the dairy cattle.

In a second method, to be described, for example, textile yarns are continuously introduced into the material receiving chamber and drawn off from it and subjected to directed pressurized gas jets, while they are arranged in the chamber for either mechanical yarn treatments, for example interlacing _3, or chemical yarn treatments, such as dyeing to perform.

Preferred embodiments of the invention are described in the following explained with reference to the drawings.

Fig.l is a sectional view of the first embodiment the invention}

Fig.2 is a sectional view taken substantially along taken on line 2-2 in Fig.l;

FIG. 3 is a section showing the flow diameters ± n in the exemplary embodiment according to FIG. 1;

909887/1391

Fig.4 is a sectional view showing the second embodiment of the invention;

Figure 5 is a side view of the conical flow guide shown in section in Figure k;

Fig. 6 is a partial section which explains how the first and the second embodiment can be modified in order to allow the introduction of material to be continuously treated into the receiving chamber.

In order to facilitate understanding of the .The invention are the first and second embodiments which are shown in Fig.l or to 3 h to 5, with particular reference to their use in the treatment of solid material in powder or particulate form the intermittent Operation illustrated .. Particular reference is made to their use when accurately metered doses of a powdered medicament are administered in the treatment of bovine mastitis, using pressurized gas from any suitable source such as an aerosol dispenser, not shown, to dispense the medicament and thereafter injecting the same into the udder of a cow in a stimulant stream. In practice, any suitable pressurized gas or carrier gas can be selected from the group comprising carbon dioxide, nitrogen oxide and fluorinated and fluorinated saturated hydrocarbons.

■ -'09887 / 1391 - 8 -

Exemplary of such medicaments that can be used in the treatment of bovine mastitis are Prednisolone, dexamethasone, hydrocortisone, cortisone, Predxson and its derivatives, i.e. salts,! Tester or Aldehydes; Nitrofurans, for example netrofurazon; Sulfur drugs, for example sulfisoxazole and Sulfamerazine and antibiotics such as polymixin, bacitracin, Procaine, Penicillin G, Dihydrostreptomycin ,, Slrap Lomycji, Neomycin, Tetracycline, Chlortetracycline, Kanamycin, Novobiocin, Oxytetracycline, Chloramphenicol, üirytnromyakv-P and its salts and derivatives. Any drug that can So far proven to be effective against bovine mastitis can be used, however, it is preferred to use one Use a mixture of nitrofurazone and sulfisoxazole that has a particle size between 10 and 100 microns. The amount of drug used will of course depend on the extent of the disease being treated.

It is now particularly referred to Pig.l which ^ is a device 1 which comprises an integrally molded plastic body 2 with a through these axially extending opening 3, which can accommodate a flow guide 4 and a nozzle or a pipe. 5 The opening 3 is delimited by a tapered wall fastening section 6, a cylindrical wall section 7> a second tapered wall section 8 with several groove recesses 9 »a second cylindrical wall section 10, a third tapered wall section

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and a stepped, nozzle-receiving wall portion The apparatus 1 may with a suitable, non-illustrated source of pressurized gas by any means, for example by a frustoconical en plug l'J _t are connected, the ibungseingriff in an opening 3 in large panels of R _e with the tapered wall mounting portion 6 stands. For another possible coupling device, reference is made to the above-mentioned application filed at the same time. From Fig.l it follows that the plug 13 is provided with an Emdfläon section 14 which can cooperate with a second tapered wall section 8 to facilitate the alignment of the current guide 4 in a manner described more fully below and through an axial bore 15 a flow connection between a pressurized gas source and the interior of the device 1. The current guide 4 according to Figures 1 and 2 has a cylindrical wall section 1 <5 with several circumferentially spaced, radially extending projections 17 and axially extending projections 18 and a conical wall section 19, the end section 20 of which is tapered in diameter. The guide 4 can be held in the opening by friction, its cylindrical wall 16 being held centrally at a distance from the cylindrical wall section 7 by radially extending spacer ribs 17. With such an arrangement, the surfaces of the wall sections 7 and 7 work together to form an annular flow channel 21 for the pressurized gas, and the surface of the conical wall section

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Section 19 lies parallel adjacent to the second tapered wall section 8 and serves the purpose of the provided therein To close groove recesses 9 laterally. Desired f a permanent arrangement of the current conduction 4 within the opening 3 by a thermal connection or Adhesive can be effected.

When the device is constructed in the manner described, a material receiving chamber 22 is formed with an outer limiting surface of revolution represented by the body opening wall sections 10 and 11, and the chamber has an inner limiting surface of revolution defined by the conical surface 19 of FIG S tr by-pass is formed, wherein the axes of the corresponding B _e grenzungs- surfaces are aligned. For reference purposes, FIG. 1 shows the outer boundary surface with a first end section A of relatively large diameter, which is arranged next to the base of the conical inner boundary surface, and the outer boundary surface B has a second end section with a relatively small diameter which, forms the outlet for the chamber 22.

According to Figures 1, 2 and 3, the groove-shaped recesses 9f, when they are laterally closed by the conical surface of the guide h , delimit several passages which can direct gas passing through the flow passage 21 into the material receiving chamber 22 as limited flows or pressurized gas jets along flow lines, which is inclined to deß

■. 909887/1391 _lx

Aligned aviises of the inner and outer surfaces are. Preferably the flow lines lie within planes which are substantially parallel to the conical one inner boundary surface next to the outlet ends of the recesses 9 ran. Hence, the gas flows tend to be initially come into contact with this section of the S tr inlet 4, which the inner boundary surface at the outlets of the recesses 9 forms, in addition, because of surface effects of the conical inner boundary surface along spiral-shaped lie to follow, which occasionally have a tendency to turn into one radially limited gas flow adjacent to the outlet 23 of the chamber to flow.

It has been found that a conical flow guide with a conicity angle of about 90 in combination with the gas flows or jets arranged in the described manner achieves an unexpected increase in the flow properties of such flows beyond those that can be achieved when such Strömt.- lediglicfr / Ln enter the chamber gen '.12 along ¥ ", which are arranged obliquely to the axes of the inner and outer Begren2ungsflachen.

While the current guide shown in FIG. 1 is conical, it goes without saying that it can also be conical in shape according to the embodiment in FIG. 6. In this regard, it appears that the most critical design consideration therein consists, a conical flow guide section directly

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1913888

to be provided next to the point at which the gas is introduced into the chamber 22 in order to achieve a desired initial To achieve gas distribution: and this is to be combined with a chamber structure that has a maximum chamber cross-sectional area and therefore a maximum flow expansion next to the mouth section 20 provides with a reduced diameter.

¥ _e nn the device 1 is arranged on a fastening plug 13, axial projections 18 of the flow guide k are preferably arranged adjacent to the surface 14 of the plug 13 and cooperate with this to delimit a radially extending passage 2k and the flow guide k positive to hold in surface engagement with the second tapered and section k. Preferably, the rear surface of the flow guide k is hollowed out to form a cavity, the side walls of which tend to even out the distribution of the gas passing radially through the passage 2k through the plug opening 15. Therefore, the compressed gas is distributed relatively uniformly after the passage 21 and the recesses 9 P.

The material to be treated is preferably introduced into the chamber 22 before the flow guide k is aligned in the opening 3. On the other hand, the material can be arranged in the chamber 22 after the current guide has been aligned either through the pipe 5 or through openings ( not shown) provided in the plastic body 2 or the current guide k.

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FIG. 4 shows a second embodiment of the invention, in which the treatment device 100 can have various possible modifications of the structure of the treatment unit 1. ¥ eiterhin in figure 4 is a different device is shown which 'includes, which is provided with a cup-shaped, threaded fastener portion 13, "the 25 additionally comprises a V _e rteilungsraum' a flange 13 forms a pressurized gas. The flange 13 ' is furthermore provided with a bore 15 'through which pressurized gas can enter the space 25' and a forwardly directed annular surface 14 '.

The treatment device 100 has a one-piece Body 102 with a one-piece radial flange section 101 and an opening 103 extending axially therethrough, which has a flow guide 104 and a pipe or a Nozzle 105 can accommodate. The opening 103 is through a cylindrical tail section 106, a tail section 107 forming a radial shoulder, a curved tail section 108 and a found portion 109 which can receive a threaded tube 105.

The current guide 104 is ordered according to FIGS. 4 and 5 a solid body with a conical section 110, which delimits the end section 111 with a reduced diameter having radial Fiänschabschnitt 112, the is provided with a pair of groove recesses 113, the flow passages between the flange surfaces 114 and 115 b ± l—

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the. According to FIG. K , the Ströaning guide 104 is centered in the bureau opening 103 by the cylindrical wall section which adjoins the radial wall section 107.

In this position, the cylindrical fan section and work

together /

the radial wall section 102T ~ to laterally close the groove spouts 113 in order to form a plurality of pressurized gas passages which are located between the guide flange surfaces 13.4. and 115 extend.

ψ Referring again to Figure 4 shows that the body 101 and the S cooperate tr bypassing 104 uig to form a material accommodating chamber 1X6 with an outer delimiting surface of revolution, rush through a curved Found section 108 and enxsteht an inner limiting surface of revolution, which is formed by the conical surface 110 in the flow guide k ., the Afasön of the corresponding boundary surfaces being aligned. Such as in the treatment device 1 has u ± st outer "boundary surface in accordance with Fig k a first ündabschnitt A relatively large diameter, which is arranged adjacent to the base of the cone-shaped inner periphery, and a second undabschnitt B relatively small Dturclmtess.e.rs. which forms the outlet 117 of the chamber 116.

The outer boundary surface formed by the curved wall section 108 is formed by rotating a line of compound curvature about the ixe axis of the body 101, whose ignition the first and second

of the outer boundary schiclxt and parallel to the Body axis are arranged. ! driving differently curved Surface arrangements are possible, particularly favorable results have been obtained by adding exne line compound Curvature is rotated, which has the coordinates tabulated below, where the point 0 with A and the point IO is denoted by.B, and the radius of the body axis 101 was measured to the corresponding point on the curve.

Points radius in now

0 11.1

ι io, 7

2 10.31

3 9.9 ** 7.92

5 6.35

6 4.75

7 3.18

8 2.36

9 1.575 10 1.575

In the table above, the distance between the points 3.13 mm, and the radius is measured in mm. Ji an inner delimitation surface, the one with an outer delimitation surface usable, which is approximated by the table above, would be a cone with an angle CA of 60 °, with the section with reduced diameter

- · '' ■ £ S 3 _{7/1 3 9 1 e} .n nRlGtfNAL - lö -

knife, ie the tip lies on the axes of the boundary surfaces radially to point k.

The material accommodating chamber 116 may be modified to be adapted to either larger or smaller gas streams by only the distance between the points and the radii given are multiplied ctor with any common R _a, and by a cone height is used that is sufficient to synchronize the portion the tip of the inner boundary surface at approximately point k .

The device 100 can be fastened to the flange 13 'by a threaded fastening ring 118 which presses the flange 102 against the surface Ik ' of the fastening section 13 "and thus seals it against the fluid.

When B _e drove the second embodiment, the filling of the material receiving chamber in the same way can be done ^ as described with respect to the first embodiment. However, in the second embodiment, the pressurized gas introduced into the cavity 2 $ ' from a suitable pressure source (not shown) is directed into the material treatment chamber 116 through recesses 113 in initial surface engagement with the outer boundary surface along lines which are inclined to the boundary surface axes and lie in planes, to the first end portion of the outer B _e grenzungsfläche preferably parallel at points

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next to the outlet ends of the recesses 113. Therefore The gas jets originating from the recesses 113 tend to spiral along the outer boundary surface

by
To follow or / to be guided, which in turn have the tendency to run at the chamber outlet 117.

Also work in the first embodiment, the 4th inner and outer bounding surfaces of revolution together to to form a material receiving chamber which produces a reverse venturi effect, i.e. a larger one Forms flow cross-section next to the center of the chamber, which in the area of section 111 with reduced Diameter than adjacent to their inlet and outlet ends. This leads to both an increased volume of gas and to a reduced gas velocity at such a center point, iü an arrangement with such a changed Cross-section creates «auaamnen. with those described in the Wise directed gas flows special gas flow distributions with excellent flow and opening properties. When the devices 1 or 100 are in operation, the amount of material introduced into the receiving chamber determines the pressure and the amount of gas that is in the receiving chamber for the full The flow and discharge of this material is to be admitted through the chamber outlet as a flow of fluid. at Using this device to treat bovine mastitis will reduce the amount of material placed in the treatment chamber Drug is determined by the degree of infection being treated.

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909887/139 1 ^ ₀ RIGBNAL

• Example 1

A thoroughly mixed drug consisting of 200 mg of nitro " furazon and Ί-00 mg sulfisoxazole with an average Weight of 20 microns was inserted into the chamber 22 of the device 1. The tube 5 was inserted into the

acting üuter introduced and were then 20 cm Preon 12 at introduced into the chamber 22 at about k, 76th It was found that the drug exudes vollstädig, the chamber VJN discharged and uniformly divides jfer in the udder has been. It has been found that the breakdown time for various similar treatments varies between one and three days.

Example 2

ifiin thoroughly mixed drug that consists of 200 mg Nitrofurazon, 4θΟ mg sulfisoxazole and 250 rag lactose with a general weight average of eti; a 50 microns exists was introduced into chamber 116 of device 100. The tube 105 was inserted into the JSuter to be treated

3 was initiated, and then 20 cm Preon 12 at about 4.76 at is introduced into chamber II6. It turned out that the drug completely exuded from the comb ^ and distributed evenly in the udder. The milking time for various similar treatments was between one and three days.

Fig.6 explains how various embodiments of the

909887/1391

The invention, and in particular the second embodiment, can be modified to allow the material to be continuously introduced into the material receiving chamber 116. In this modification, the current guide 104 is provided with an axially extending through-bore 119 which is aligned with the axes of the corresponding delimitation surfaces and has an outlet end in the region of the end section 111 with the reduced diameter, if a suitable tube 120 which is axially aligned with the bore 119 and is suitably attached to the flange surface 114 is used to avoid contact of the material to be treated with the pressurized gas during the material passage through the flange space 25 '. It goes without saying that the device explained in FIG.

Licher way can be modified by an axially extending bore opening in the flow guide 4 and an ear attached to the material should be provided that the flow guide is attached and extends backwards through the bore opening 15.

While dxe is used in the embodiment shown in FIG can be added to either continuously or intermittently powdered or particulate solid material into the Introducing chamber 116 according to the aforementioned procedure for the treatment of rifidermastitis became a special one Found usefulness in the treatment of multifilament and wool-like textile yarns.

For example, multifilament yarn can pass through the device

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6 to produce a textured yarn product which has alternating thick and thin sections spaced along the length of the treated yarn bundle. In order to produce a textured yarn product would be a gas, for example compressed air, is continuously introduced into the cavity 25 ', and vielfaseriges yarn from a not shown source would continuously into the chamber 116 through the tube 12O ^- input and from this through the tube 105 along a straight path through first and second pairs of not shown

speaking conveyor rollers withdrawn. The speed of the pair of conveyor rollers can be adjusted intermittently so that the feed speed can be intermittently greater axs the take-off speed of the yarn, whereby the individual fibers to thick yarn sections can be separated from each other freely and by the gas flow can be wound to form turns or loops, which are then made in the yarn when it is drawn off be withheld from Chamber Ho. The turns or | Loops increase the volume of the yarn by making the Keep fibers spaced apart.

It was also found that the treatment device Devices of the invention can be used to keep the entanglement or tangling of the yarn continuously along to effect its path by generally passing multifilament yarn under low tension through the tube 120, the Chamber 116 and tube 105 is pulled. A first print

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gas is continuously introduced into the space 25 ', and a A jet of pressurized gas, such as air, is continuously introduced into the chamber 116 through a nozzle (not shown), which is disposed substantially perpendicular to the yarn path through the chamber at a point between reduced diameter portion 111 and outlet 117. In operation, that inserted into cavity 25 'operates Gas on the fibers of the "conveyed" yarn to cause it to open and that through the side wall of the chamber II6 introduced gas jet directs the individual fibers again in the opened yarn bundle in order to effect their relative displacement and interlacing.

On the other hand, the multifilament yarns and the wool-like staple yarns can be dyed in the treatment chambers which are formed by the devices according to the invention by continuously letting the yarns to be treated pass through the chamber and either applying a vaporized dye or fine distributed colorant is entrained by the pressurized gas is introduced into the chamber to cause both the opening of the yarn as well as the connection of the colorant with innigliche dex individual yarns or fibers.

In addition, the devices according to the invention can be used find to wrap a core yarn. In this application, a core yarn is continuous axially through the Treatment chamber introduced under slight tension, and

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a winder is either in the form of a continuous. Thread or a wool-like accumulation by a suitable Opening initiated in the side wall of the chamber. The rotational movement of the core yarn through the operation of the pressurized gas jets causes the winder to be drawn into the chamber and it causes it to be wrapped around the core.

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Claims (9)

Claims 1.) Device for treating material with a pressurized gas, characterized in that it has a receiving chamber for the material to be treated, which is limited in part by outer and inner limiting surfaces of rotation with aligned axes, the outer B boundary surface a first end portion relatively large Diameter and a second end portion of relatively small diameter, the second portion forms a chamber outlet, the inner delimitation surface is conical, the base of which lies next to the outer delimiting first end portion and the end portion of reduced diameter opposite the Kamnierauslaß, a device forming at least one pressurized gas passage is provided with a chamber inlet at a point in the region of the outer delimiting first end portion and the inner delimiting base portion and the Durdigang a limited flow of pressurized gas in initial / areal contact with a de r B _e grenzungsflachen aligned along a line extending obliquely to the axes of these iiehe Bugrenzungsf 3 Ii ii £ t. 2.) Device according to AnsxJi'uch 1, marked dadurdx, dai3 the reduced diameter end portion for the material to be treated has an inlet to the chamber. BATH ORIGINAL 909887/139 1 - 2k - 3.) Vori "ichtung according to claim 1, characterized in that one boundary is flattened; the outer boundary surface is. 4.) Device according to claim 3, characterized in that the outer boundary surface is formed by rotation of a line with compound curvature about the outer boundary axis and the corresponding ends of this
Line that when rotating the first and the second
üJndabschnitt form, sxnd arranged parallel to the outer delimitation axis. 5.) Device according to claim k, characterized in that the end section with reduced diameter forms an inlet to the chamber for the material to be treated 6.) Device according to claim 1, characterized in that one boundary surface is the inner boundary surface
and the line along which the flow of pressurized gas is directed lies in a plane which is essentially parallel to the inner boundary surface ah the point
the initial surface contact with this is, 7.) Device for the treatment of material - with one pressure * - gas, characterized in that it has a link with a has first through opening, which is formed at least partially by first and second adjacent, axially aligned rotational surfaces, the second rotational 90 9887/139 1 - 25 - 19,9888 surface a first end portion of relatively large diameter adjacent to the first surface of revolution and a second end portion having a relatively small diameter, a flow guide at the opening axially in alignment with the surfaces and provided in surface contact with the first surface of revolution is, the flow duct is a conical surface section has, the end portion of which is reduced in diameter opposite the second end portion at a distance, at least a part of the conical surface portion is arranged radially inwardly to the second surface of revolution and cooperates with this to at least partially to form a material treatment chamber, the outlet of which is limited by the second inlet section, at least a flow conduit and the chamber form a pressurized gas passage having an inlet end and an outlet end, the outlet end of the passage at a point in the area of the conical surface portion and the first end portion is arranged, the passage a limited flow of pressurized gas through its outlet into the treatment chamber and in surface contact with the tapered surface portion and direct the second rotating section along a line inclined to the axes of the rotating surfaces and a connecting device for the ü) inlaßende of the passage is provided with a pressure source. 8.) Device according to claim 7, characterized in that the flow guide and the first surface of revolution of the 90 9887/139 1 - 26 - Link together to form the passage. 9.) Device according to claim 91, characterized. That the flow guide is provided with a through-hole which is aligned with the surface axes extends through the reduced diameter end portion and the material to be treated in the treatment chamber can guide. 10.) Device according to claim 8, characterized in that P ■ ■ - the first and second surfaces of revolution are connected by a substantially radially extending annular wall section of a through bore, the flow guide is provided with a radial annular flange adjacent to the base of the conical surface section, the radially extending annular flange has a radial edge surface section in contact with the first rotational surface and axially having spaced first and second side surfaces, the first side surface W is in plane contact with the radial annular wall section and the pressure gas passage is defined by a Nutaussparung disposed in the radial peripheral surface of the flange portion and zv; een the side surfaces along a Line extending obliquely to the surface axes, the groove-shaped recess being closed laterally, around the inlet and outlet ends of the passage through the first surface of revolution and the radially extending annular Limit the land section. 9 0 9887/1391 - 2? - BAD ORlGrNAL 11.) Device according to claim 10, characterized in that the second · surface of revolution by the rotation of a line compound curvature is formed around the surface axes, the ends of this line, diu b * ei the rotation first and form second end sections of this second surface, and are arranged parallel to the surface axes / through the Passage of the limited flow of pressurized gas in initial surface contact with the first end portion of the second Rotational flat; is controllable. 12.) Device according to claim 8, characterized in that the first surface of revolution radially nadi outside of the first end portion of the second surface of revolution expanded is to a frustoconical, annular surface section to form the one in surface contact with the conical Area section · of the current conduction lies and the Passage of pressurized gas through a groove; from saving in this truncated cone shaped annular surface and ends at the first end portion of the second surface of revolution, the groove recess laterally through the conical surface section is closed to form inlet and outlet ends of the passageway and the passageway has a restricted flow of pressurized gas in initial surface contact with the conical surface portion can judge. 13.) Device according to claim 12, characterized in that the current conduction has an essentially cylindrical surface section a-ifveist, which connects to the base of the conical surface section, and the opening of the limb ' 9 0 9887 / f391 is further limited by a third surface of revolution which adjoins the first surface of revolution at a point that is radial to the cylindrical surface section of the flow guide is, the flow guide is axially aligned with the surfaces of rotation centered by spacer elements is located between the third flat of revolution * and extend the cylindrical surface portion of the flow guide and form a flow path for pressurized gas, and the outlet end of this passage communicates with the flow path. 1 * 1.) A method for material treatment, characterized in that a chamber is provided which is limited in part by outer and inner limiting surfaces of rotation with aligned axes, the outer limiting surface has a first iündabschnitt with a relatively large diameter and a second iiind Section with a relatively small diameter αϊf shows, which forms a chamber outlet, the inner boundary surface is conical and has a w Grundflächenabs chnitj / on, which is arranged next to the outer limiting first end portion and whose Jindabschnitt with reduced diameter is opposite the Kamirfer outlet, material to be treated is introduced into the chamber, a limited flow of pressurized gas is introduced into the chamber through a gas inlet located in the area of the outer delimiting first Ji'ndabschnittes and the inner delimiting base portion and the pressurized gas in initial surface contact with a 909887/1391. BATH ORIGINAL this B-c / boundary area comes along and initially along one arranged at an angle to the axes of the boundary surfaces Line.ι is initiated. 15.) Method according to claim 1h, characterized in that the end section of reduced diameter of the conical surface is provided with an opening to form a material inlet opening for the chamber aligned with the axes of the boundary surfaces and the material to be treated continuously into the chamber through the material inlet opening is introduced while at the same time a limited flow of pressurized gas is introduced into the chamber through the gas inlet. 909887/1391 , · 30 blank page