DE1908812A1 - Device for adding dry solids to liquids - Google Patents

Description

Dipl.-ing, W. PAAP 8 MÖNCHEN Dipl.-Ing. H. MITSCHERtICH. sw »*» «™ * ίο

Telephone: (0811) Ϊ9 68

DiPL-IiIg ₁ K-GUNSCHMANN D, right, "ct. W. KÖRBER February 21, 969 PATENT ANWAtTE

ANTON PFEUFFER

5OI East? 8 Street

New York, N.Y. 10021 / V.St.A.

Patent application

Device for! Adding " dry solids to liquids."

The invention relates to a fast working front direction for adding dry solids to liquids. In particular, the invention relates to a device that it enables fast, accurate, reliable and continuous way, to supply liquids to dry solids and to produce a mixture of the dry substances and the liquids.

More specifically, the invention relates to an improvement with respect to the device disclosed in "U» S.A. patent application 521 132 is described, and which in turn is a Improvement on the device disclosed in U.S. Patent 3 O39 655 is described.

In U.S. Patent 3,039,655 there is a device described, which represents a solution to the problem, measured Quantities of filter material, e.g. B. from InfusDEienerde, a 'To supply flowable material which flows through a pipeline and with the help of this pipeline is fed to a filter will. The ones mentioned in the

$ 909 4

The device described in the U.S. Patent will operate on the basic idea that an increase in the effective surface area for a given delivery device leads to a Increase in the performance of the device with regard to the supply of a filter material to a titration device leads. Therefore, several cylindrical containers are provided, which open into a funnel-shaped base part of the feed device. Each of these containers contains a specific ■. te amount of infusion soil or the like. Pen containers so-called flushing funnels are assigned to their lower end in order to ensure uninterrupted movement of the solid substances In principle, the requirement to be met is that a gaseous or liquid medium at various points in the associated feed container is initiated in order to prevent the dry solids from getting stuck.

In U, S.A. patent application 521 132 an apparatus is described which has a feed container and a Includes mixing chamber and is connected to the pipeline - '- ■ through which the liquid flows. There is an exchangeable metering device between the feed container and the mixing chamber arranged, which allows a control so that a steady flow of solid materials ensures is. This metering device is from the feed hopper and the mixing chamber separated by perforated plates. the perforated plates are removable between the task— container and the metering device and between the latter, and the mixing chamber arranged. One by an engine ^ drivable shaft protrudes through the feed container and into the metering device; with this shaft agitator blades or the like are rotatably connected * .-. "Everyone 'the Such a stirring device is assigned to perforated plates.

The main objective now is to provide a novel and improved device for supplying solid '''' ner solids to liquids. The invention also provides a device for supplying dry solids

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to liquids -before, "in the case of the supply of dry solid Fabrics is adjustable. The invention also provides a device of the type mentioned, in which a sieve is combined with a fluidization device that there is a considerable saving in space that it is not required ·, - the feed container any special To give shape. According to a further feature, the invention provides a device of the type mentioned, which is equipped with removable sieves, so that both flowable solids as. also not flow or free-flowing solid substances of any kind are fed can. Finally, the invention provides a device of the type mentioned, which enables the dry substances to be delivered precisely, evenly and economically.

A device designed according to the invention for Feeding a dry solid material to a receiving device in the form of a steady and uninterrupted flow comprises a source for the solid substance to be fed, which is provided with a dispensing opening. One at the discharge opening of this source for the solid substance, which is a ensures even flow of the solid material, serves to the dry solid material to the source mentioned while maintaining a uniform flow rate remove; this device comprises a sieve of predetermined Mesh size and a vibrator or shaker by means of the sieve is made to vibrate. A mixing device connects the dry solid material with device with a uniform speed with the receiving device and guides the emerging from the sieve dry solid material to the receiving device.

The device for regulating the flow velocity of the solid material comprises a sieve of a predetermined mesh size, mounts resembling shock absorbers with rubber elements, " by means of which the sieve is supported at the opening of the material source is, as well as a vibrator coupled to the sieve, by means of which the sieve is made to vibrate. Of the

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ORIGINAL INSPECTED

Vibrator includes one coupled to and through the screen this supported, the source or the device for Feeding the dried solid includes walls, one the floor closing off the space enclosed by the walls and an opening formed in this floor for dispensing of the dry solid material which are arranged at the bottom of the material feeder is and rests against the wall ', serves to remove the dry solid material that is in the vicinity of the opening of the Soil accumulates, move towards this opening. The fluidizing device essentially comprises a ring-shaped component made of a gas-permeable porous material, which is substantially frustoconical and arranged so that between the annular member and the bottom of the material feeder a free one Zone is available, which has a suitable .Vforrichtung a pressurized gas can be supplied *

A funnel supported by the ring-shaped component guides the dry solid material to the center of the sieve. This funnel can be attached to the sieve and on the rubber elements be arranged below the sieve, and it is used to pass the sieve dry solid material for central part of the mixing device to direct.

In another embodiment of the invention, the fluidization device comprises a plurality of substantially annular components made of a gas-permeable porous material, each of which is substantially frustoconical, and which are arranged relative to one another in the manner of steps and in such a way that they are between sioh and the bottom of the Material supply device delimit a zone to which a pressurized gas can be supplied.

The invention and advantageous details of the invention are illustrated below with reference to schematic drawings explained in more detail using exemplary embodiments.

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Pig. Fig. 1 is a side view, partly broken away an embodiment of a device of the IT.S.A.- The device described in patent application 521 152.

Fig. 2 shows in a side view an embodiment of a device according to the present invention for Adding dry solids to liquids.

. Fig. 5 shows, partially in section, an embodiment a combined fluidizing and vibrating unit device according to the invention ;.

Fig. 4 shows, partly in section, another embodiment of a vibrating unit according to the invention Contraption.

Fig. 5 shows in an enlarged partial section Fluidization device of the embodiment of the invention shown in FIG. 5.

Fig. 6 is a side view, on a smaller scale and partly broken away, of another one Embodiment: of the invention.

In the device shown in Fig, 1 are dry solid substances, e.g. powdery or granular silky-free or solid substances that do not flow freely, a feed container 11 from a supply source either directly or supplied with the aid of a device not shown. The feed container 11 includes a downward tapering funnel-shaped section 11a and a adjoining cylindrical section ITb. The section 11b of the hopper carries an integral flange 12 which forms the open lower end of the surrounding cylindrical section. The feed container 11 is firmly connected to the other parts of the device.

A motor 15 provided with an operations is on vi / eise not shown above the feed container 11 Arranged in a fixed position and is used to provide a skin 14 with a

drive predetermined speed. With the shaft 14 is one first agitator 15 in the lower part of the- holder 11 rotatably connected and arranged on the Mveau, on which the conical funnel section 11a meets the cylindrical section 11b of the feed container. A second stirring device 16 is fixed against rotation with the shaft 14 connected and at the lower end of the feed container 11 same height with the open lower end of the cylindrical Section 11b arranged. . "" .- "" -.-.

Furthermore, a metering device 17 is provided: the on its upper edge carries a one-piece flange 18 which is connected to the flange 12 of the feed container 11 cooperates and is essentially coaxial is arranged with the feed container. Thus, the feed container 11 and the metering device 17 essentially form one continuous cylindrical channel. Between the cylindrical portion 11b of the feed container 11 and of the metering device 17 is a first perforated plate 19 provided by the flanges 12 and 18 in their · position is held. ''

The first perforated plate 19 has numerous through openings, the total cross-sectional area of which is 10? S to 65 $ of the surface area of the plate. These Openings have a conical shape, and the first plate 19 is arranged so that the narrower ends of the openings.-after pointing up and facing the feed container 11. The plate 19 is at the narrower ends of its openings with sharp edges. .

The metering device 17 is preferably connected to the feed container 11 by clips or the like, not shown, which can be easily and quickly released. can so that the first perforated plate 19 easily and quickly can be exchanged for another plate, and thus the connection between the feed container and · the ignition device can be established quickly and easily as required

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can be solved. Thus, the first perforated plate 19 can be made according to the properties of the solid to be measured Select the material and the desired flow rate, the dispensing container 11 and the ignition device 17 can be made of plastic, cast iron, copper, brass, stainless steel or another suitable material be. The first perforated plate 19 is preferably made of a material with abrasion resistance, e.g. stainless steel or ffylon or the one under the statute Protected designation Teflon available material.

The first stirring device 16 is in the immediate vicinity the first perforated plate 19 arranged so that this stirring device when the "device. immediately a predetermined amount of the solid material over the Cutting on the edges of the openings of the plate pushes, so that the solid material through these openings to the metering device 17 is delivered. The metering device carries at its lower end an integral therewith Flange 21 which cooperates with a flange 22 which is formed at the upper end of a mixing chamber 23.

A second perforated plate 24- is between the metering device 17 and the mixing chamber 23 and is also held in place by the flanges 21 and 22, like the first perforated plate through the flanges 12 and 18 is held in place. The second perforated plate 24 has numerous through openings which, like the openings in the first plate 19, have a conical shape. The second perforated plate 24 is arranged in the same way like the first plate 19 "i.e. so that the narrower Ends of the openings directed upwards and the metering device 17 are facing. The second plate 24 is also provided with sharp cutting edges at the narrower ends of its openings.

A third agitator 25 is rotatably connected to the shaft 14 and at the lower end of the metering device

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17 arranged in the immediate vicinity of the second perforated plate 24. This third stirring device 25 can be designed to be essentially I-shaped. The openings of the first perforated plate 19 and the second perforated plate 24 of a certain set of plates are matched to one another and to the angular speed or speed of the shaft .so that dry solids? which are located in the feed container 11 at any level, flow evenly into the mixing chamber 23. For example, at a predetermined speed of the shaft 14 ', the presence of a smaller percentage of openings in the first plate 19 and the presence of a higher percentage of openings in the second plate 24 lead to this _? that a certain solid material is fed to the mixing chamber 25 at a uniform flow rate.

The metering device 17 is connected to the mixing chamber 23 preferably by clips or the like, not shown, which can be easily and quickly released so that the second perforated plate 24 is easily and quickly exchanged and the connection between the metering device and the mixing chamber is easily established or ₀ In certain applications, a predetermined, circumferentially extending part of the mixing chamber 23 can be provided with several overflow openings, not shown, by means of which any excess solid material that may be present can be directed to the outside of the mixing chamber. These overflow openings prove to be particularly advantageous "when soap is to be fed into a pipe",

So that the solid substances are properly mixed with the liquid, the liquid in the mixing chamber 23 is kept at a sufficient or suitable level! ^{Any suitable device can be provided for} this purpose, as is described, for example, in US _Pat . No. 5,211,132. The entire device can be piped in any suitable manner

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be switched on, e.g. with the help of an open feed device the so-called eductor type

Fig. 2 shows an embodiment with a feed container 31, an ignition device 32 and a mixing chamber 33, which are arranged essentially coaxially and in the one on the hand of Pig. 1 described manner releasably with each other are connected. The feed container 31, the metering device 32 and the mixing chamber 33 operate in the same Way like their counterparts described with reference to Fig. 1, and they can be made of the same material.

Fig. 3 shows an arrangement in which a screen 34 is releasably connected to rubber buffers 35 and 36, which between the lower end of the mixer 32 and the upper end the mixing chamber 33 arranged bind- · In the immediate vicinity a stationary funnel 37 is arranged in the sieve 34. With A vibrator or motor 38 is connected to the sieve 34 by an arm 39. The motor 38 can easily with regard to its speed or oscillation frequency are regulated} for this purpose any suitable device can be provided, E.g. one switched on in the input circuit is not adjustable resistance shown, which is to be operated by hand with a likewise not shown Can be provided with a setting knob or a scale

If the motor or vibrator 38 is switched on, the sieve 34 is set in oscillation, the frequency of which corresponds to the frequency to which the vibrator has been set is. The solid material flowing to the screen 34 is from outer edge of the screen kept away by the funnel 37, which has a smaller diameter at its lower end than the sieve, so that the diameter of the area inside to which the solid material is fed is smaller than that Diameter of the sieve. This arrangement results in no difficulty in sealing the screen 34 at its edge.

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- ίο - 190Ö812

fig. 4 shows an embodiment in which a stationary upper funnel, which is arranged above a sieve 34 ¹ , serves to guide the solid material through the sieve and, with the aid of a lower funnel 37 'set in vibration, the middle part of a lifting chamber 33 (Fig. 2) to be supplied. The sieve 34 'is releasably connected to the lower funnel 37'; the lower funnel is supported by rubber buffers 35 * and 36 · which are arranged in the lower part of the mixing device 32, and the sieve is attached to the upper end of the funnel 37 'having the larger diameter. The motor or vibrator 38 'with the funnel 37' firmly connected by an arm 39 *, ·

The vibrator arrangements shown in FIGS. 3 and 4 are essentially the same in terms of their construction and mode of operation, but the embodiment according to FIG. 3 is particularly suitable for use in connection with feed containers of larger diameter, while the embodiment according to FIG small diameter is suitable. The mode of operation of the devices according to the invention is based on the fact that the solid material, for example the infusion soil, has a high tendency to get stuck in a container. When the motor 38 or 38 'is switched off, the sieve 34 or ₀ 34 ¹ does not vibrate and no solid material flows through the sieve. However, if you turn on the vibrator or motor 38 or 38 ', the sieve 34 or 34' is set in vibration so that solid material flows through the sieve, the throughput per unit of time depending on the setting of the vibrator and the mesh size of the Sieves set up. The amount of solid material flowing through the sieve 34 or 34 * can vary, for example _, between about 0.170 and about 27 kg / h, and it is determined by the setting of the vibrator, the width of the sieve and the overall diameter of the sieve

In the embodiment according to FIG. 3, the sieve is 34 combined with a fluidization device, von.der a

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Part "in. Jig. B is shown in a - larger" scale in section. The fruidization device makes the device particularly suitable for use in conjunction with a feed tank of larger size. Diameter suitable. In the embodiment according to FIGS. 3 and 5, the fluidizing device comprises a fluidizing ring. 41, which is essentially conical or frustoconical. The ring 41 is made of any suitable gas-permeable porous material and is positioned at the lower end of the metering device 32 so that its inner land rests against the upper part of the peripheral surface of the funnel 37 while its outer hand is in contact with the substantially cylindrical wall the metering device is available. _: ; .. -._

The funnel 37 is at its larger diameter having end provided with an integral flange 42 opposite the funnel generally protrudes radially outward and overlaps the inner edge of the ring 41 adjacent to it «. According to FIG. 5, an in Fig. 3 not shown device provided by means of a suitable gas of which, e.g. is delimited by the underside of the fluidization ring 41 and a component 45 which iiji is essentially the same Has the shape of the ring 41. According to FIG.; 3, the gas of the Inlet nozzle 43 can be supplied from a container 46 via a gas line 47.

The gas supplied to zone 44 under pressure, e.g. carbon dioxide, flows in the manner indicated by arrows in FIG. 5 with a pressure through the fluidizing ring 41, the sufficient to loosen the solid material that is in the lower Part of the metering device 32, i.e. on the ring 41 aolocated. The solid material is from the ring 41 through the Gas is released and flows steadily to the funnel 37, through which the material is passed onto the sieve 34, by means of which it is fed to the mixing chamber 33 in a precisely adjustable amount, since the sieve vibrates. That

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Solid material fed to the mixing chamber 33 via the sieve 34 is fed to the pipeline 26 according to FIG. 2 or; picked up by any other suitable gate direction, - ', ... ■ -. -; - ^: -, "

If the liquid flowing through the conduit 26 is perishable, and if the; Shelf life • ■■ - "of the product can be adversely affected by oxygen, e.g. carbon dioxide is used as a fluidizing agent, and this gas forms an additional gaseous barrier of the mixing chamber 33 "This gas barrier ensures *: that the Dispensing of the solid material, the mixing of the solid material with the liquid and the introduction of the! '"material in the pipeline is carried out with the complete exclusion of air will. The solid material, e.g. the infusor earth, is cleaned by the supplied gas, and the gas gradually displaces the lighter air upwards until.> upper edge of the feed hopper "

The use of the combined fluidization and Vibrator unit allows a significant reduction in space requirements, since it is not required in this case is to give the feed container 31 a certain shape. . The device works exactly * evenly, reliably and economical / and it allows feeding each any free-flowing or non-free-flowing solid material] the construction of the sieve is here in each case adapted to the material in question, -; -.- "'■■■

An embodiment made for practical use the device gave at the same setting of the vibrator 38 and for the same period of time Use of a screen 34 of 4x4 "mesh" one per hour Amount of material from about 0.170 to about 27 kg and when in use a screen of 6 χ 6 "mesh" per hour from an amount of material from about 0.425 to about 16.7 kg.

The speed or the visual vibration frequency of the motor or vibrator 38 of FIG. 2 may be of any suitable type

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Way, e.g. with the help of an adjustable Resistor, which is switched into the supply line, and is arranged in a housing 51, which is for example on the outside of the task container 31 - "is attached" This lid stand can with the help of one on the outside of the housing 51 accessible rotary or scale knob 52 can be adjusted »

Fig. 6 shows an embodiment in which the device Supported by pillars 53 and 54 as well as other pillars, not shown, is “the arrangement according to FIG. 6 is particularly suitable for use for industrial purposes. According to FIG. 6, there are several fluidizing rings 41a up to 41d, which are equally six, so arranged that they form stagesj these rings are used here instead of the in the device according to FIG. 3 provided single fluidization ring 41 used. All fluidizing rings 41a through 41d are formed in the same manner as that described Ring 41. The outer diameter of ring 41a is essentially the same as the inner diameter of ring 41b « the outer diameter of the ring 41b is substantially equal to the inner diameter of the ring 41c, and the outer diameter of the diameter of the ring 41c is substantially the same as that Inner diameter of ring 41d.

Claims to liability 8

Claims (1)

P Αΐίΐϊϋ I S- P Ε 'ti -O H E 1ο Device for supplying a dry solid material to a receiving device in the form of an equal uninterrupted stream, characterized by a material exercise device (11-31) with. an opening for dispensing the dry solid material, a device arranged at the opening of the material feed device ,. _; ,. by means of which the dry solid material is removed from the material feed device at a constant flow rate, this device being sieves. _: . (19j 24ί 24? 34 '') of predetermined mesh width and a device (38, 38 'comprises) can be rotated by means deren.die sieves to vibrate as well as by a mixing device (33), the apparatus swelche for dispensing the material with a uniform flow velocity with the receiving device (26)., so that the receiving device can be supplied with the dry solid material discharged with the aid of the sieve device * ■■ ..- · 2 »Device according to claim 1 ,. characterized in that the device to dispense the material at a uniform flow rate comprises a sieve device (34 * 34 ' t ^of predetermined size, furthermore rubber buffers (55 _r 3β? 35% 3 & ⁸ ) through which the sieve is placed in front of the device the discharge port of the material supply device is supported _r and a vibrator (38 ,; 38 '", which is connected to the screening device and the screening device to be used in vibration; put" 3 »Device according to Anspraoh 1, characterized in that that the material feed device comprises a wall (31), furthermore one that closes the wall at its lower end Bottom and an opening formed in the bottom for dispensing r .15 - of the dry solid material, and that a fluidizing device in the lower part of the Ma terialzuf exercise device is arranged so that it is on the YiTand of the material feeder and it allows that to be found in the Moving dry solid material accumulating around the opening in the direction of the opening. 4. Device according to claim. 2> characterized in that the vibrator comprises a motor ₉ connected to and supported by the sieve device, 5. The device according to claim 2, characterized by a funnel (37 /) »which is attached to the sieve (34 ¹ X and on the rubber buffers (35 '> 36 ^s ) under the sieve so that it passes through the sieve dry solid Material d directs to the middle part of the mixing device. 6. Apparatus according to claim 2, characterized in that that the vibrator comprises a motor connected to the screen is and is supported by the screen that the material feeder found one, -a floor closing the wall at its lower end, and one in the floor formed opening for dispensing the dry solid material and that further comprises a fluidizing device is provided, which is arranged in the lower part of the material feeding device so that it rests against the wall thereof and it allows the dry solid material accumulating in the vicinity of the opening in the ground towards (| to move to the opening »and that the fluidization device a substantially annular member (41) made of a gas-permeable porous material comprising a is substantially frustoconical in shape and so arranged is that between this annular component and the bottom (45) of the material feed device a free Zone (44) is present that a device (43) is provided, by means of which the zone is a pressurized ^ as can be supplied, and that a funnel (37) supported by the annular component is provided, 9 0 9041 / Ι by means of which the dry solid material to the middle: Part of the screen (34 ') is fed. . : 7. Apparatus according to claim 5 »characterized _? · That the fluidizing device comprises a substantially annular member of a gas permeable porous material of substantially kegelstumpffö.rmiger ^shape: . which is arranged to be / together with the bottom of the material feeder delimits a free zone, and that a device is provided by means of this zone 'a pressurized gas can be supplied ».." 8. Apparatus according to claim 3? characterized, that the fluidization device several essentially ^ ring-shaped components (41a to 41d) made of a gas-permeable ™ porous material, each of which is formed substantially in the shape of a truncated cone, these components being arranged relative to one another so that they form a stepped pool (Fig. 6) , and that they delimit a free zone together with the bottom of the material feed device, and that a device is provided by means of which a gas under pressure can be fed to this zone, 9 »Device according to claim 7, characterized by a funnel (37) * supported by the ring-shaped component, through which the dry solid material is guided to the central part of the sieve» -. '.' φ 10. Device according to claim 7, characterized in that. that a hopper supported by the annular member is provided to guide the dry solid material zts in the central part of the screen, and that the vibrator a Arm (39 ') includes which at one end on the funnel and on the other end is attached to a motor. 11. The device according to claim 7, characterized in that that the gas supplied under pressure is carbon dioxide. The patent attorney 9841/1280 Lee rs e i.f e