EP2143497A2 - Device for separating magnetisable parts - Google Patents

Abstract

The device (1) has a chamber (2) with an inlet (20) for particle-loaded goods and an outlet (21) for purified goods, where a magnetic component (4) is arranged in the chamber. The component is shiftable into vibration by a vibration drive (3) and designed as a grate. The chamber is surrounded by a housing (22) that includes an opening for insertion of the component. The drive is arranged at the housing and on an outer cover of the component. The drive is designed as a magnetic drive, pneumatic vibration drive, hydraulic vibration drive, ultrasonic drive and unbalance drive.

Description

The invention relates to a device for particularly continuous separation of magnetizable particles from bulk or flowable material. In this case, the device has a chamber with an inlet for the particle-laden material and an outlet for the cleaned good.

In the prior art, generic devices are known in which magnetic rods, which are arranged in the flow of pourable or flowable Good, filter out in the good mitgeförderte magnetizable particles. For example such devices used in the food industry, for example, to filter unwanted iron parts from a stream of milk powder. For the most effective filtering possible, it is necessary that a plurality of rods penetrate the flow, that is, as strong and homogeneous magnetic field pulls the unwanted foreign body from the pourable or flowable Good. This leads to a corresponding reduction in the passage width in certain areas, even if the total conveying cross section is equal to the cross section before and after the device. It has been observed that in this area with a smaller distance between the individual magnetic bars form bridges of the good and can prevent a flow of electricity.

To prevent this, it has already been proposed in the prior art to arrange the magnetic rods in a rotating magnetic component, however, the rotary drive for the rotating movement outside the device is to be arranged, the drive shaft must be guided through the housing of the device into the interior of the chamber , which leads accordingly to sealing problems, which in turn are not desirable in particular in the food industry. Furthermore, the rotational movement in the sensitive food raw materials is undesirable because the material undergoes additional mechanical processing, a walking.

Based on this prior art, it is the object of the invention to improve a device, as described above, to the extent that it can be used as effectively as possible.

To achieve this object, the invention is based on a device as described above and proposes that in the chamber, a magnetic component is angeordent and the magnetic component can be set in vibration by a vibration drive.

Through the use of a vibrating movement, clogging of the passage through the device according to the invention is reliably avoided. At the same time, the vibration movement does not constitute an excessive mechanical load on the material to be conveyed. The vibration movement is characterized by a continuous reciprocating movement, the occurring accelerations being of course chosen such that magnetizable particles already adhering to the magnetic component are not torn off again.

An essential advantage of the invention is in particular that the housing surrounding the chamber is intact, that is, there must be no moving parts such as shafts and so on are guided through the housing, while still a movement, namely a vibratory movement of the magnetic component available is to prevent clogging of the current in the device safely.

In particular, a vibration of the magnetic component is a very gentle way to protect the entire device from clogging. Since, if necessary, a corresponding vibration movement of the magnetic component can be used, process interruptions of the system in which the device according to the invention is integrated, easy to avoid, that is, by the use of the device according to the invention, the reliability of the entire system is considerably increased.

The device according to the invention is designed, for example, as a separate component which has a housing. However, the device may also be used as part of a more complex system in which the chamber is also surrounded by a housing.

The magnet component is responsible for filtering out the magnetizable particles from the material flow with high quality. The housing therefore has an opening for the insertion of the magnetic component. This makes it possible that the magnetic component is arranged interchangeable on or in the housing.

Cleverly, the housing has an opening for the insertion of the magnetic component and the magnetic component is thus arranged interchangeable on or in the housing. This ensures that the magnetic component can be disassembled in a simple manner, for example, for cleaning purposes or for conversion purposes, but without giving up the advantages according to the invention, namely that a closed chamber is also available during use of the device in a flow.

Cleverly, care is taken to ensure that the magnetic component is tightly and / or firmly connected to the housing. By a correspondingly tight connection of the magnetic component with the housing ensures that not undesirably good exits the conveying process in the region of the device. Since ultimately is to turn off a vibratory movement of the magnetic component, ie in particular the magnetic component is moved accordingly, it is also advantageous that a corresponding fixed connection of the magnetic component with the housing, which is not resolved, the vibrational motion. As "solid" is not "rigid", but "reliable" firmly understood, such that no elements are vibrated from the magnetic component or the entire assembly is loose and leaky.

For the operation of the vibratory motion several approaches according to the invention exist. In principle, it is initially possible that a continuous vibration movement is provided. In a second variant according to the invention, a clocked mode of operation of the vibration drive is provided, which means that time intervals with a vibrational movement with breaks alternate the vibration drive. Which mode of operation is used most skillfully depends on whether the material to be conveyed is likely to be clogged in the device. Optionally, a corresponding sensor with a corresponding monitoring control is provided, which causes a switching on of the vibration drive, for example, if the flow rate at the outlet is too low.

As a vibration frequency of the vibration drive or as the resulting vibration frequency of the magnetic component or the entire device or the housing, a frequency from 5 Hz is proposed according to the invention. Preferably, the mains frequency of the supply voltage of the vibration drive is used as the vibration frequency, since this frequency is available without additional effort. Therefore, a preferred vibration frequency results in the range of 50 Hz ± 20%. This interval may also be narrower according to network stability, for example only 5% to 10%.

However, the invention is in no way fixed, it can also find much lower or higher frequencies use, which is why in particular a range of about 10 Hz to 300 Hz is used, which is favorable in connection with the device construction, since the accelerations occurring yet are well manageable. Frequencies of about 10 Hz to 150 Hz are preferably selected.

In addition to influencing the vibration frequency of course, the vibration amplitude is a manipulated variable with which the device according to the invention for the most efficient, interruption and trouble-free operation is adjustable. The amplitude of the distance between the two reversal points in the vibration movement is considered. This can be a few tenths of a mm to a few mm or even cm, this also depends on the design of the vibration drive for which, as will be described, several concepts exist.

It is also possible that a frequency converter is used to adjust during operation, the vibration frequency or to change. As a result, in addition to a change in the mode of operation (continuous or cycled mode of operation of the vibration drive), it is also possible with the aid of the vibration frequency to control and control the filtering out of magnetizable particles from the product or material flow. Of course, these measures can be suitably combined with each other.

The vibratory movement of the magnetic component is characterized according to the invention by a reciprocating motion between two end positions. In this case, the vibratory movement can take place in a rectilinear motion, wherein this vibratory movement of the magnetic component takes place, for example, in the direction of the material conveyed from the inlet to the outlet, at right angles thereto or at an acute angle thereto. The device according to the invention is orientable such that the product flow flows horizontally or vertically or inclined to the vertical. This means that the arrangement according to the invention is arbitrary, which considerably increases the field of application of the device according to the invention.

The above-mentioned arrangement according to the invention is described in particular by an oscillating or periodically linear reciprocating vibration movement of the vibration drive, that is, the embodiment of the vibration drive is such that, for example, an oscillating or periodically linear reciprocating vibration movement takes place at least of the magnetic component.

In addition to these rectilinear vibration movements is according to the invention but also provided a circular or rotating vibration movement. In such a rotating or circular vibratory motion components of movement in the direction of the conveyed good or at an angle or at right angles combined or superimposed in a skilful manner. Suitably, in this case, the bearing of the magnetic component in the device sufficient movement possibility, but without jeopardizing the tightness of the device or due to the vibrating motion to solve independently from the device, that is arranged sufficiently fixed.

There are also several variants according to the invention for the arrangement of the vibration drive on the device. First, it is provided that the vibration drive is arranged on the housing and so put the entire device including the magnetic component in vibration. Such an arrangement not only ensures that corresponding impending blockages in the region of the magnetic component are resolved, but also makes it possible to take appropriate precautions elsewhere in the device. Of course, then the vibration drive due to the larger to be offset in rotation mass to dimension differently.

Alternatively, it is provided that the vibration drive preferably (only) acts on the magnetic component and this is vibrated. By such an embodiment, the vibration drive is correspondingly smaller dimensioned.

According to the invention it is provided that the vibration drive can be arranged both on the outside and on the inside of the housing. Both variants are part of the invention. The advantage of providing the vibration drive on the inside of the housing is that thus the vibration drive is protected by the housing. Of course, of course, is the vibration drive also provided again with a drive housing. Such an arrangement is favorable, for example, when a magnetic drive (a vibrating magnet) is selected as the vibration drive and the magnetic component is attracted or vibrated via an air gap.

By such an arrangement, the vibration drive can also be arranged closer to the magnetic component to be brought to the vibration.

Cleverly, as proposed in a variant according to the invention, the vibration drive is arranged on the outer panel of the magnet component introduced into the opening. Thus, the vibration drive and the magnetic member, for example, prepared as a common unit, which facilitates the assembly and on the other hand also gives a high efficiency, since the vibration movement acts directly on the magnetic member.

For the drive holder for the vibration drive a stable solution is recommended. This is achieved, for example, in that the drive holder surrounds the vibration drive in a U-shape.

According to the invention, it is provided that the entire device is set in vibration. It is then favorable that elastic connecting pieces are provided at the inlet or outlet in order not to risk unwanted damage or material stresses.

By the elastic connecting pieces is also achieved that the vibration movement is limited to the device and not the adjoining the device pipe or line areas are also put into vibration.

By an elastic mounting of the magnetic component in the housing, a certain mobility is assigned to the magnetic component and also achieved that the vibration movement is limited to the magnetic component. For this example, rubber springs are used.

Cleverly, an elastic support of the device is applied to a bearing, bracket, frame or the like, thus decoupling a support of the entire device from the rest of the piping (at the inlet or at the outlet). Rubber buffers, for example, are used for this purpose.

For the design of the vibration drive, there are a variety of proposals. For this purpose, for example, corresponding unbalance drives are known. Magnetic drives are also known, which attract the solenoid component via an air gap via periodically energized electromagnets and release them again against a restoring force. Also pneumatically or hydraulically acting vibration drives are known. But then the vibration drive as such is not limited, each vibration drive, which allows a corresponding vibration movement, according to the invention can be used.

With the help of the magnetic component, the magnetizable particles are filtered out of the good. The aim of the device according to the invention is to provide as good as possible a cleaned material, ie freed of magnetizable particles Good. For the design of the magnetic component, therefore, there are also several concepts. First, it is proposed according to the invention that the magnetic component consists of grate arranged in a frame with magnetizable grate bars. The grate bars are clamped on one side in each case in the frame and thus mechanically stable well connected. But it is also possible that the grate bars are mounted only on one side, whereby a comb-like configuration of the magnetic component results.

It should be noted that several variants are provided for the realization of the grate bars according to the invention. In the aforementioned variant, the design of the grate bar is chosen so that this itself is sufficiently magnetizable or magnetic, ie consists of magnetizable material. But there is also a variant according to the invention, which is described in the further course of this application, in which the grate bar or the plurality of grate bars preferably rather as possible from unmagnetisierbarem or slightly magnetizable material and in the grate bar a if necessary, again removable magnetic insert can be inserted. The advantage of such a variant is in particular that when removing the magnetic insert from the grate bar easy detachment of the particles from the grate bar in the event of cleaning is possible.

In a preferred embodiment of the invention, the arrangement of the grate bars is selected such that seen in the device, in the conveying direction of the goods, the entire cross section of the device is filled by grate bars. Cleverly while the grate bars are arranged in several levels and are each spaced in a plane to each other but offset so arranged on a gap to achieve that a free fall of the goods by the device according to the invention is not possible. This ensures that the magnetic force of the magnetic component also interacts as possible with each good particles in sufficient interaction to safely filter out in the good mitfließenden or embedded magnetizable particles.

In a further variant according to the invention, it is provided that a slide-in frame which can be pushed into the opening is provided and the magnetic component is spring-loaded in or is arranged on the insertion frame. The spring bearing already causes an elastic decoupling of the magnetic component relative to the other components of the device. But the spring bearing also causes the restoring force when the magnetic member is vibrated, for example by means of a magnetic drive as a vibration drive. Of course, the force of the magnetic drive is chosen so that it is higher than the restoring forces of the elastic spring mounting. In this case, the spring bearing, for example, by mechanical springs such as coil springs, compression springs and so on can be realized or it is, for example, leaf springs or rubber buffer or the like provided according to the invention.

In a preferred embodiment of the invention, it is provided that a yoke plate is arranged on the magnet component and the yoke plate can be attracted via an air gap with the oscillating magnet of the vibrating magnet. The oscillating drive is part of the magnetic drive, which is proposed as a vibration drive according to the invention. The oscillating magnet, which is cleverly formed with an electromagnet, attracts the yoke plate, which is part of the magnetic component, via an air gap, that is to say a certain distance. This is done against the restoring force of a corresponding force accumulator such as a spring, an elastic bearing and the like. Optionally, this entire arrangement is realized in a slide-in frame and so in a simple manner in the device according to the invention and expandable.

Also during operation of the device, so the vibration movement, according to the invention a fixed center position of the magnetic component or the grate bars is obtained. This means that the magnetic component or the grate bars are moved according to the invention, but periodically oscillate about a central position. By combing the moving grate bars through the product stream, which leads to a corresponding mechanical Loading the good leads is avoided.

The magnetic component is preferably equipped with one or more permanent magnets in order to filter out the magnetizable particles from the material flow. The advantage of using permanent magnets lies in the fact that they can be used without additional power supply. Alternatively, it is also possible to use electromagnets in the magnet component. The electromagnets are in turn controllable and one wins by such a configuration, an additional manipulated variable in the device according to the invention, which can be used in addition to the manipulated variables vibration frequency, operation of the vibration drive and vibration amplitude for optimizing the deposition process using the device according to the invention.

Of course, it is also possible in a variant according to the invention to combine the use of one or more permanent magnets with one or more electromagnets in a skilful manner, whereby the magnetic field generated by the permanent magnet is correspondingly amplified with the aid of the electromagnet.

Preferably, the grate bars are extending in a plane, preferably arranged parallel in the device. In this case, the cross-sectional area of the chamber is greater than the cross-sectional area in the inlet or outlet area, so as to ensure that a sufficient passage area of the material remains in the area of the magnetic component through the device. Cleverly while the grate bars are arranged parallel running, whereby the conditions within the chamber for the passage of the goods are not different. According to the invention, it is also provided that the grate bars are arranged in two or more planes, which may optionally be parallel to each other or else offset. This leads to a more effective filtering out of magnetizable particles, since a magnetic field acts on the good or particles in the conveying direction of the material over a relatively long range.

Cleverly, the grate bars of the individual levels are set to each other gap, that is, in the first level not occupied by a grate bar area is blocked in the second level by a grate bar, whereby the good is forced to flow around these grate bars or to - stream. The proposal according to the invention is so efficient in its effect that, even with such an embodiment of the magnetic component, it reliably avoids clogging within the device by bridging the material between the grate bars.

Cleverly, as viewed in cross-section, a round or oval cross-section is desired for the design of the grate bars, in order to oppose the flow-through material as little resistance as possible.

In a preferred embodiment of the invention, it is provided that the device is arranged in relation to the conveying direction of the goods before and / or after a vibrating device vibratable in vibration by a vibration drive and the device is connected to the vibrating device such that indirectly by the vibration drive Also, the device is set in vibration. Such a configuration opens up a further field of application for the invention. It is of considerable advantage that the vibration drive provided anyway for the oscillating device is also used simultaneously in order to be used indirectly on the device according to the invention. This results in a very cost-effective but also compact solution of a variant of the invention. It will be a sufficiently stable connection provided between the vibrating device on the one hand and the device on the other hand to reliably transmit the vibration. In this case, if appropriate, the entire device, its housing or only the magnetic component indirectly set in vibration.

The device according to the invention is provided both in the conveying direction before or after the vibrating device. In this case, in particular the variant is favorable, in which the device according to the invention is arranged in the conveying direction after the vibrating device, since the intrinsic safety of the vibrating device can be significantly increased by such an arrangement. In the vibrating device which according to the invention is designed, for example, as a vibrating machine, as a vibrating table, as a sieve, as a vibratory conveying device or vibratory drying device, (magnetisable) elements can be detached and released as particles by the continuous vibratory motion, which then pass into the crop stream, but then from the downstream device according to the invention are filtered out again immediately. In this case, the term vibrating device includes not only the aforementioned vibrating aggregates or machines, but any other oscillatable arrangement that can be used, for example, for conveying, drying, processing, splitting, transporting and so on of goods. According to the invention, the term vibrating device also includes a vibratory conveying device, for example in trough, gutter or tube shapes.

The invention therefore also includes a corresponding oscillating arrangement consisting of a vibrating device and a device.

Fig. 1

in einer dreidimensionalen Ansicht eine Ausgestaltungsvariante der erfindungsgemäßen Vorrichtung;

Fig. 2

eine Seitenansicht nach Fig. 1;

Fig. 3

eine weitere Seitenansicht nach Fig. 1;

Fig. 4

eine Draufsicht auf eine weitere Ausgestaltungsvariante der erfin- dungsgemäßen Vorrichtung;

Fig. 5

eine Seitenansicht auf eine weite- re Ausgestaltungsvariante der er- findungsgemäßen Vorrichtung und

Fig. 6, 7, 8

jeweils eine dreidimensionale Ansicht auf eine weitere Ausge- staltungsvariante der erfindungs- gemäßen Vorrichtung;

In the drawing, the invention is shown schematically. Show it:

Fig. 1

in a three-dimensional view an embodiment variant of the device according to the invention;

Fig. 2

a side view after Fig. 1 ;

Fig. 3

another side view after Fig. 1 ;

Fig. 4

a plan view of a further embodiment variant of the inventive device;

Fig. 5

a side view of a further embodiment variant of the inventive device and

Fig. 6, 7, 8

in each case a three-dimensional view of a further embodiment variant of the device according to the invention;

In the figures, the same or corresponding elements are denoted by the same reference numerals and therefore, if not appropriate, will not be described again.

In the following described figures, several examples of the embodiment of the device 1 according to the invention are shown, without limiting the scope of protection to these cases shown here. These are examples.

In Fig. 1 In a three-dimensional view, the device 1 according to the invention is shown schematically. In the left-hand area of the device 1, a chamber 2 is shown enclosed by a housing 22. To the right of this is connected the vibration drive 3, which is connected to a corresponding drive holder 30 with the housing 22.

The chamber 2 is open at the top, here it has the inlet 20. The good to be cleaned enters the chamber 2 through the inlet 20 from above and leaves the chamber 2 below through the outlet 21. In the embodiment shown here, the flow of material flows through the chamber 2 from top to bottom. At right angles to this flow direction, the grate bars 40 of a magnet component 4 are arranged in the device 1. The magnet component 4 is inserted through a lateral opening of the housing 22 in the chamber 2. However, it is easy to see that the chamber 2 in the area shown here has a significantly larger cross section than the inlet or outlet cross sections, with which the device 1 to the piping system, which takes over the transport of the goods to be cleaned, is connected.

The magnetic component 4 is designed like a drawer, wherein the "bottom" is formed from the drawer of the grate bars 40. The magnetic member 4 is inserted laterally in an opening 23 of the housing and secured with hand nuts 24 on the housing 22. Through the use of such nuts 24 is on the one hand a fast openable but also safe, because firmly closable arrangement achieved. As an alternative to a hand nut, the use of a wing nut or a star grip is possible.

For cleaning purposes, therefore, the magnetic component 4 can be easily removed from the housing 22 and re-installed.

Due to the filtered out of the material flow magnetizable parts decreases over time, the gap between the grate bars 40, since the particles are deposited on the grate bars 40. At the same time, the free-flowing material is also provided with a certain particle size and tends at any time to connect to one another in such a way that bridges form between the grate bars 40. To avoid this, is permanently or as needed, so clocked by the vibration drive 3, at least the magnetic component 4 and thus the grate bars 40 vibrated. The vibration is transmitted to the grate bars 40 via the frame carrying the grate bars 40. Good, which rests against the grate bars and, for example, are or could be part of a bridge connecting the grate bars, will be vibrated and linked or attached with others Gutteilchen literally apart. With the help of the invention, therefore, both an already existing blockage of the material flow in the device 1 is dissolved and also permanently provided that such a blockage, which can lead to a corresponding inhomogeneous material flow, is prevented.

It has proven to be advantageous to provide a U-shaped drive mount 30 for the vibration drive 3, through which the vibration drive 3 with the housing 22 which surrounds the chamber 2 is connected. Cleverly, the arrangement is chosen so that the vibration movement of the vibration drive 3 is as directly as possible on the magnetic component 4. The U-like configuration of the drive holder 30 leads to a permanently stable arrangement of the vibration drive to the housing 22nd

In Fig. 3 it is shown that the grate bars 40 of the magnetic component are arranged equidistantly parallel to each other in a plane. In the region of the inlet or outlet 21 corresponding connecting pieces (not shown here) are provided, through which the chamber 2 is connected to the rest of the pipeline system of the system in which the device 1 according to the invention is installed. Since the vibration drive 3 may have a considerable weight, it is advantageous to provide a separate storage or support for this purpose. This is achieved for example by arranged on the drive bracket 30, equipped with rubber buffers 32 bearing feet 31. The bearing feet 31 are as bolts trained and allow the whole arrangement on one, in Fig. 3 unscrewed bearing block or the like. The rubber bumps 32 cause a certain elasticity to follow the vibrational motion nondestructive.

In the in Fig. 1 to 3 shown embodiment of the device according to the invention is shown as a vibration drive, for example, an imbalance drive. In addition to this embodiment, however, there are other embodiments for the vibration drive 3. Thus, for example, in the variant Fig. 4 . 5 and 6 as a vibration drive 3, a magnetic drive, in particular a vibrating magnet 34 is provided. The double arrow 35 indicates the vibration movement. Again, the chamber 2 is surrounded by a housing 22, in the embodiment shown here, the vibration drive 3 is arranged on the outside of the housing 22.

The magnetic component 4 is formed by a frame 41, wherein the frame part, which faces the vibration drive, is designed as a yoke plate 42. The frame 41 is supported by rubber springs 43 on the housing 22. In total, for example, 2 × 2 rubber springs 43 are provided on the frame parts 44, 44 'projecting at right angles to the yoke plate 42. The number of rubber springs 43 used depends on the size of the magnetic component 4. For example, it is alternatively provided that only one rubber spring is used on one side. With relatively large magnetic components, it is also possible to arrange three or even more rubber springs. The elastic springs of the rubber springs 43 also form the restoring moment for the oscillating magnet 34. In the de-energized state forms between the oscillating magnet 34 and the yoke plate 42, in particular between the housing region facing the oscillating magnet 34 and the yoke plate 42 an air gap 33 out.

If current is applied to the electromagnet of the oscillating magnet 34 (preferably, for example, alternating current or pulsating direct current with the corresponding vibration frequency), the oscillating magnet periodically pulls the yoke plate 42 of the magnet component 4 and thus also the entire frame 41 to the left in the direction of the vibratory drive 3. Counter to this movement are the rubber springs 43, which put the frame 41 back to the right again when the vibrating magnet 34 is no longer energized. With appropriate magnetization of the yoke plate 42, it is also possible to achieve with the alternating magnetic fields attraction and repulsion. With the help of the nuts 24, the magnetic member 4 is clamped by the rubber springs 43 to the housing. It is shown that in the housing 22, an opening 23 is provided, in which the magnetic member 4 is inserted. With the help of an outer panel 45, which is also fastened with hand nuts, the housing is closed. In this case, the outer panel 45 is optionally arranged on the magnetic component 4 or provided in a cover-like manner as a separate component in order, when the magnetic component 4 is inserted into the opening 23, to seal the housing again tightly at this point.

In Fig. 4 the use of these outer walls 45 is indicated in FIG Fig. 5 . 6 this outer panel 45 is omitted.

In Fig. 5 the situation is shown in a side view. Left of the chamber 2, which is bounded by the housing 22, the vibration drive 3 is provided. The provided in the housing 22 opening 23 is alternatively or advantageously sealed tightly and firmly by a frame part of the magnetic component. The frame 41 of the magnetic component 4 receives the grate bars 40, 40 '. It is favorable here that the grate bars 40, 40 'are arranged in two mutually parallel planes are. Closer to the inlet (above) is a first plane with two grate bars 40 ', below this first plane a second plane of three grate bars 40 is arranged, wherein the two grate bars 40' of the first plane to gap, ie in the space between the bars 40 of the lower, second level are arranged. On the other hand is in Fig. 6 the arrangement of the two levels with grate bars exactly the other way around. Here, three grate bars 40 'are provided at the top in a first plane, and only two grate bars 40 at the second, underlying second outlet facing the outlet 21. According to the invention, the number of grate bars and the number of levels depend on the product , the product size, the flow rate and so on. This means that the magnetic component can be adapted in its specific configuration to the respective material flow to be cleaned. A level can z. B. one, two, three, four, five or even more z. B. equipped with permanent magnets, electromagnets or Elektropermanentmagneten rust rods.

In Fig. 6 are fastening bolts 36 clearly visible, with which the device 1 to a support frame (not shown) can be connected. In another variant according to the invention, the fastening bolts 36 serve to fasten the cover-like outer panel 45 to the device 1 with the aid of corresponding manual nuts. On the frame part 46, which in the in Fig. 6 Rubber mountings 43 can be seen, in the frame part 46 are the perpendicular thereto extending grate bars 40, 40 'held. The magnetic component 4 is supported by the rubber springs 43 on the in Fig. 6 not shown outer panel 45 from. Cleverly while the outer panel 45 is also in addition to the example with appropriate bolts or nuts and so on firmly connected to the rubber springs 45 to achieve a secure, stable arrangement. Of course, the arrangement is chosen so that the vibration movement take place can.

In comparison between the variant after Fig. 1 and the variant Fig. 4 It should also be noted that the longitudinal extent of the grate bars 40 in the in Fig. 1 shown variant is parallel to the vibration movement 35th In the in Fig. 4 In the embodiment shown, the vibration movement 35 is oriented at right angles to the longitudinal extent of the grate bar 40, 40 '.

The variant after Fig. 1 to Fig. 3 is realized so that the device 1 by means of bearing feet 31, for example, connected to a separate bearing block and can be fastened. The bearing block is not shown for clarity. Flexible conduit connections provided at the inlet 20 and outlet 21 connect the chamber 2 to the remainder of the system piping.

In the in Fig. 4 . 5 and 6 shown variant of the invention, another fastening concept is realized. The arrangement after Fig. 4 . 5 or 6 is so far self-supporting, it is connected, for example, with the help of sufficiently stable, but also flexible connections to the pipe sections at the outlet 21 and inlet 20. It is even possible to dispense with appropriately flexible, rubber-like or otherwise flexible connectors here, and ultimately to choose a relatively rigid flange to the system pipe when the vibratory motion of the magnetic component is chosen so that an impairment of the rest of the system does not occur, ie Example, a corresponding support of the fittings on the system pipe in the region of the inlet 20 or outlet 21 is arranged. These variants are part of the invention.

In FIG. 7, FIG. 8 a further variant of the device according to the invention is shown. It has already been pointed out in that an unbalance drive, a magnetic drive, a pneumatic or hydraulic vibration drive or the like can be provided as the vibration drive 3. In the in FIG. 7, 8 variant shown, an ultrasonic drive 37 is used as a vibration drive 3.

Ultrasonic actuators 37 are known. With relatively small amplitudes, these drives work in the ultrasonic range, ie in the frequency range above 10 to 15 kilohertz, usually about 10, 15 or 30 kilohertz to 100 kilohertz and more. The ultrasonic drives according to the invention generally consist of two elements, namely a supply control or electronics (in FIG. 7, 8 not shown) and the actuator that generates the vibration and transmits to the member to be vibrated.

For this purpose are in FIG. 7, 8 According to the invention, two different variants are provided.

FIG. 8 Its structure is what FIG. 4 shows, relatively similar. The magnetic component 4 is realized as a magnetic insert 400 and is inserted into a lateral opening 23 of the housing 22.

The outer panel 45 is relatively stable and carries a plurality of grate bars 40 which protrude like a comb into the housing 22. The construction is chosen so that the grate bars 40 attached at one of its ends on the outer panel 45, for example, are welded or screwed and protrude like a tine. Good, the open end of the grate bars 40 in the interior of the chamber 2 can be seen.

For example, the grate bar 40 is formed to provide a cylinder-like sleeve, for example, made of metal such as stainless steel, V2A, V4A, or other materials which permanent magnets, preferably with alternating polarity, are strung together. The use of permanent magnets has the advantage that they generate a magnetic field without additional power supply in order to attract magnetisable particles in the flow of pourable or free-flowing material.

The magnetic insert 400 is designed like a drawer and can be pulled out of the opening 23 of the housing, for example for cleaning purposes.

Laterally next to the opening 23, a mounting flange 25 is provided which carries connecting means, in particular threaded bolt 26. The outer panel 45 has a plurality of holes 48 through which the threaded bolt 26 is feasible. In the corresponding inserted position of the magnetic insert 400 in the housing 22 then the threaded bolt protrudes through the bore 48 of the outer panel, the outer panel 45 and thus the entire magnetic insert 400 is then secured with nuts 24.

The magnetic inserts are arranged in the tube and sleeve-like grate bar 40 and usually dustproof or hermetically sealed in this provided. The arranged in the tubular grate bar 40 packet of individual magnets generates a corresponding magnetic field, such that the magnetizable particles adhere to the outside of the grate bar 40.

In the in FIG. 8 the embodiment shown is on the outer panel 45, at the right area, the vibration drive 3, here formed as an ultrasonic drive 37, respectively. Due to the rigid mechanical connection of the grate bar 40 with the outer panel 45, the ultrasonic movement of the ultrasonic drive 37 is transmitted via the outer panel 45 to the individual grate bars 40 and this under appropriate Vibrations set to avoid that the pourable Good, which has to pass through the grate bars 40, the spaces between the individual grate bars by adhering to each other, bridging, clogged.

The acceleration caused by the ultrasonic drive 37 or, in general, the vibration drive 3 is not great enough to tear off the magnetizable parts attracted by the grate bars 3 or the magnets arranged in them.

Between the magnetic insert 400 and the mounting flange 25, a corresponding rubber seal or rubber mounting is provided, whereby the vibration movement of the vibration drive 3 or ultrasonic drive 37 does not cause the entire housing 22 in vibration.

It should be noted that the invention provides both aspects under protection. The vibration drive is on the one hand arranged so that the entire housing 22 is set into vibration or only in the product or gutstrom projecting grate bars 40 and optionally the holding elements, such as the frame 42 or the outer panel 45th

In FIG. 7 is a to FIG. 8 shown comparable structure. In the in FIG. 7 In the embodiment shown, the magnetic component 4 consists of the magnetic insert 400 and the stripping system 450. In this case, the stripping system 450 is located between the magnetic components 400 and the housing 22 or the material flow. The stripping system is slid onto the threaded bolts 26 together with the magnet insert and fastened together with nuts 24, the stripping system 450, more precisely the stripping plate 451 of the stripping system 450, has corresponding bores 453 to effect this.

The here two-part structure of the magnetic component 4 allows a very comfortable cleaning of the entire structure removed. In fact, in fact, it is now possible to remove the magnetically active components from the grate bar 40, so as to "turn off" the magnetic attraction. For example, if the grate bar 40 is made of non-magnetizable material (for example, stainless steel or the like), the magnetizable parts thereof are likely to fall off, and it is easy to clean the area of the grate bars 40 in the material flow.

According to the invention, it is provided that the grate bar 40 or the individual grate bars 40, 40 'consists of unmagnetisable or slightly magnetizable material as possible in order to permit easy detachment of the particles from the grate bar 40 when the magnetic insert 47 is removed.

The structure of the stripping system 450 is such that a stripper plate 451, which closes the opening 23, carries in the chamber projecting, sleeve-like grate bars 40, the interior of which are accessible through the openings 452.

In alignment with the interiors of the grate bars 40 are on the outer panel 45, facing the stripper plate 451, behind columnar magnet inserts 47 are provided, which are through the opening 452 into the interior of the grate bars 40, inserted and also removed again. In this case, a plurality of magnetic inserts 47 are provided, namely for each grate bar one each. For cleaning purposes, therefore, the proposal according to the invention allows the magnetic insert 400 with the magnet inserts 47 to be removed from the stripping system 450 with the grate bars 40 so that the magnetizable parts are easily removable from the outer skin or outer surface of the grate bar 40 and the entire matter can be cleaned.

It is clear that the interior of the grate bar 40 through the opening 452 is accessible and therefore the opening 452 is provided in the connection region of the grate bar 40. For example, it is also possible to expand the magnet system, ie the magnet insert 400, without opening the piping system to which the chamber 2 belongs, since the stripping plate 451 remains tight on the mounting flange 26 and closes the opening 23.

Another advantage of the variant shown here is, in particular, that the vibration drive 3 realized as an ultrasonic drive 37 is arranged on or on the stripper plate 451 which carries the grate bars 40. These grate bars 40 are mechanically stable and tightly connected to the stripper plate 451, whereby the vibration movement in the ultrasonic frequency range of the vibratory drive 37 is easily and effectively transferred to the grate bars 40 and so bridging in the flowing Good, which could lead to a blockage in the device, avoids. Again, the arrangement is again chosen so that between the stripper plate 451 and the stripper 450 and the housing a rubber seal or rubber buffering is provided and actually vibrate only the grate bars 40 by the vibration drive 3. In the drawing according to FIG. 7 it is shown that in this two-part structure of the magnetic component 4 of the vibratory drive 3 / ultrasonic drive 37 on the stripping 450 and Abstreifplatte 451 angeordnet ist. is arranged. However, the invention is not limited thereto. The invention is equally feasible when the vibratory drive 3 is disposed on the outer panel 450, which is mechanically sufficiently stable and effectively connected to the stripper plate 451 to transmit the vibratory motion to the grate bars 40. The vibration drive 3 / ultrasonic drive 37 is, as shown, arranged laterally on the outer panel 45 and stripper plate 451. The vibration drive 3 / ultrasonic drive 37 is also optional on or in the outer panel 45 or squealer 451 can be arranged.

The magnetic inserts 47 consist of a tower-like or columnar superimposition or juxtaposition of a plurality of permanent magnets, preferably with alternating polarity. If appropriate, these are arranged in a separate carrier sleeve (not shown), if the use of adhesives or other connecting means and so forth between the individual permanent magnets is not desired.

The claims now filed with the application and later are attempts to formulate without prejudice to the attainment of further protection.

If, on closer examination, in particular also of the relevant prior art, it appears that one or the other feature is beneficial for the purpose of the invention, but not of decisive importance, it is of course already desired to formulate such a feature , in particular in the main claim, no longer having.

The references cited in the dependent claims indicate the further development of the subject matter of the main claim by the features of the respective subclaim. However, these are not to be understood as a waiver of obtaining independent, objective protection for the features of the dependent claims.

Features that have hitherto been disclosed only in the description may be claimed in the course of the method as of essential importance to the invention, for example to distinguish from the prior art.

Features which have been disclosed only in the description, or also individual features of claims comprising a plurality of features, may at any time be included in the first claim for distinction from the prior art, even if such features are associated with others Characteristics were mentioned or achieve particularly favorable results in connection with other features.

Claims (15)

Apparatus for continuous separation of magnetizable particles from bulk or flowable material, the apparatus having a chamber with an inlet for particle-laden material and an outlet for the cleaned material and in the chamber a magnetic component is arranged and the magnetic member by a vibration drive in vibration displaceable is. Apparatus according to claim 1, characterized in that the chamber (2) by a housing (22) is surrounded and / or the housing (22) has an opening (23) for the insertion of the magnetic component (4) and the magnetic component (4). interchangeable on or in the housing (22) is arranged and / or the magnetic component (4) is tightly and / or firmly connected to the housing (22). Device according to one or more of the preceding claims, characterized by a continuous vibratory movement and / or a pulsed operation of the vibratory drive (3) and / or a vibration frequency in the range from 5 Hz, in particular in the range of 10 Hz to 300 Hz, preferably between 10 Hz and 150 Hz or 50 Hz ± 20% and / or the use of a frequency converter for setting the vibration frequency and / or a circular or round vibration movement of the Magnetic components (4). Device according to one or more of the preceding claims, characterized in that as frequency of vibration the mains frequency of the supply voltage of the vibration drive (3) is provided and / or the vibratory movement of the magnetic component (4) in the direction of the inlet (20) to the outlet (21) promoted Good, perpendicular thereto and / or in an acute angle for this purpose and / or an oscillating or periodically linear reciprocating vibration movement of the vibration drive. Device according to one or more of the preceding claims, characterized in that the vibration drive (3) is arranged on the housing (22) and so vibrates the entire device and / or the vibration drive (3) on the outside or inside of the housing ( 22) is arranged and / or the vibration drive (3) preferably acts on the magnetic component (4) and this vibrated and / or the vibration drive (3) on the outer panel (45) of the in the opening (23) inserted magnetic component (4 ) is arranged. Device according to one or more of the preceding claims, characterized by a U-type drive holder (30) for the vibration drive (3) and / or as a vibration drive (3) an imbalance drive, a magnetic drive, a pneumatic vibration drive, a hydraulic vibration drive, an ultrasonic drive ( 37) or the like is provided and / or the vibration drive (3), in particular the ultrasonic drive (37) on or on the stripper plate (451) or the outer panel (45) is arranged. Device according to one or more of the preceding claims, characterized by elastic connecting pieces at the inlet (20) or outlet (21) and / or an elastic bearing (43) of the magnetic component (4) in the housing (22) and / or an elastic support ( 32) of the device (1) on a bearing, bearing block or the like and / or a fixed, optionally elastic mounting of the device to the at the inlet (20) or outlet (21) opening Anlagerohrstücks. Device according to one or more of the preceding claims, characterized in that the magnetic component (4) as in a frame (41) arranged grate with particular magnetized grate bars (40, 40 ') and / or the magnetic component (4) is comb-like. Device according to one or more of the preceding claims, characterized in that a slide-in frame which can be pushed into the opening (23) is provided, and the magnet component (4) is arranged spring-loaded in or on the slide-in frame and / or a yoke plate (42) is attached to the magnet component. is arranged and the yoke plate (42) via an air gap (33) of the vibrating magnet (34) of the vibration drive (3) can be attracted Device according to one or more of the preceding claims, characterized in that the magnetic component (4) comprises a magnetic insert (400) and / or the magnetic component (4) comprises a stripping system (450) and / or a fixed center position of the magnetic component (4) or the grate bars (40, 40 ') in operation and / or the magnetic component (4) is equipped with one or more permanent magnets and / or electromagnets. Device according to one or more of the preceding claims, characterized in that the magnetic insert (400) cooperates with the stripping system (450), in particular for cleaning purposes, in particular both are separable from one another and / or the stripping system (450) comprises grate bars (40) the magnetic inserts (47) can be inserted. Device according to one or more of the preceding claims, characterized in that the stripping system (450) has a stripping plate (451) which carries the grate bars (40), the stripping plate having an opening (452) in the connection area of the grate bar (40), by which the magnetic insert (47) into the interior of the grate bar (40) can be inserted or removed and / or the magnetic insert (400) or the outer panel carries at least one magnetic insert (47), which in the grate bar (40) of the stripping inserted or can be removed from this. Device according to one or more of the preceding claims, characterized in that the grate bar (40) consists of unmagnetisierbarem or slightly magnetizable material and upon removal of the magnetic insert (47) from the grate bar (40) easy detachment of the particles from the grate bar (40 ) and / or the grate bars (40, 40 ') preferably parallel in a plane or in a plurality of mutually offset planes are arranged and / or an arrangement of the grate bars (40, 40 ') in the device that in the conveying direction of the goods seen the entire cross section of the device of grate bars (40, 40') is filled and / or the grate bars (40, 40 ') seen in cross-section rounded, in particular circular or oval are formed. Device according to one or more of the preceding claims, characterized in that the device with respect to the conveying direction of the material before and / or after its part is characterized by a vibration drive in vibration displaceable oscillating device arranged and the apparatus is so connected to the vibrating device that by the vibration drive indirectly and the device at least the magnetic component is vibrated, wherein as the vibrating device, in particular a vibrating machine, a vibrating table, a sieve, a vibrating conveyor or a vibratory drying device is provided. Oscillating arrangement consisting of a vibrating device and a device arranged in the conveying direction of the goods in front of and / or thereafter according to one or more of the preceding claims.

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