DE2024296A1 - Feeding device for vibration mills - Google Patents

Description

Andrejewski & Honke patent attorneys Physicist Dr. Walter Andrejewski Graduate engineer

Lawyer file: J54 792 / Kle

Essen, May 15, 1970 Kettwigar Straß36 ( ^th )

Patent application SWECO, Inc. 611 1 E. Bandini Boulevard Los Angeles, California / USA

Feeding device for vibration mills.

In the case of vibration mills, in which the grist is processed by means of a grinding medium shredded in the swinging mill trough or otherwise is processed, the grist and the grinding medium are processed up to these days it is generally still filled into the mill trough by hand. This is usually done using a rectangular container with an opening at one end that is suspended from a hoist. Usually two men are required, one of them depresses the front edge of the container while the other lifts the rear end of the container to allow the inside of the container can flow away into the mill. Besides, the must Grinder be in place to bring the grinding media into the mill

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and the grist in the container to ensure an even distribution of the sole grinding medium. It it is clear that this results in a number of disadvantages, not least of which is that the necessary Work can not be automated and the entire loading process on the reliability of the operating personnel. Furthermore, the abrasive medium usually brought in by means of a chain conveyor, from which the whole can only be made with great difficulty * The content can be emptied in the event that the Change the grinding medium. As a result, it can happen that different orphans are entirely undesirable Abrasive media are mixed together.

If you can also use round filling pans to hold the product to be dispensed into the mill as evenly as possible, it is extremely difficult with the previous packaging processes to . to align the pan precisely, all the more as the pan tends to roll slightly when emptied. Furthermore, the Filling pan have the largest possible capacity with the smallest possible dimensions and their filling as possible dispense evenly into the grinder.

The invention has therefore set itself the task of providing a charging device for mills of the type mentioned at the beginning Art to create by means of which the filling pan does not wobble can be safely emptied practically evenly via the grinder.

A more detailed explanation of the invention from which the following gives further special features of the same Description of some preferred embodiments

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examples based on the accompanying drawings; show it:

1 shows a loading device according to the invention for Vibration mills in perspective view;

2a shows the drive of the round pan used in the device according to FIG. 1, which can be raised and lowered greatly simplified representation in a plan view;

Figures 2b and 2c · a plan view and a side view of the filling pan and the drive system;

Figure 3 is a partial view of one end of a stabilizer arm to support the filling pan;

Figure 4a to 4c details of an embodiment of a round Filling pan with a bottom opening for dispensing the material into the vibratory mill;

FIG. 5 is a partial view of a modification of the round filling pan;

FIGS. 6a to 6c show a further modification of the round filling pan;

FIG. 7 shows an overhead crane for the jib hoist;

FIGS. 8a-8e show a preferred embodiment of a round one Filling pan *

FIGS. 9a-9f show a further preferred embodiment a round filling pan; and

Figure 10a-10d yet another embodiment of a round filling pan.

009848/1307

The invention is applicable to both grinders for grist processing, for Polishing and deburring of small parts as well as for grinding mills applicable, however, hereinafter, for the sake of simplicity, reference will only be made to fine mills to be discribed. An example of such a construction is described in US Pat. No. J 100 088. These The mill has a circular mill trough into which the ground material and the grinding medium are poured. The grist can be made of metal castings, plastic parts and the like. } exist. Such a mill can have a vibration drive, as described, for example, in U.S. Patent No. 2,284,671 is described.

In the embodiment shown as a whole in FIG a feed device according to the invention for vibratory mills has the vibratory fine mill 10 in the usual design a mill trough in the form of an annular chamber 11, into which the ground material and the sole ifmedium are introduced and which is set in vibration in such a way that the ground material is finished, polished, deburred, etc. is. This mill can for example, be designed in the way it is sold by the applicant as model FM-IO. The abrasive medium P or grist and sole grinding medium is fed through a round filling pan 12 supplied, which on a stabilizer arm Ij5 one Cantilever or bridge crane 14 depends and raised and lowered respectively from this. be brought into the correct position can. The pan 12 is swiveled over the mill and aligned centrally with respect to it in order to fill it into the mill trough 11 to submit. After the grinding process has ended, the Grist and the grinding medium through a channel I5 on Shaking sieve 16 given, by means of which the ground material is separated from the grinding medium when the ground material is made of metal parts

09048/1307

exists, which can be attracted by a magnet, can also be used to separate the ground material from the grinding medium Magnetic conveyor belt I7 can be used to lift the grist instead of pulling it from the end 18 of the separator 16 below is omitted. The separator 16 has a discharge chute for the sole if medium, by means of which it is inserted into the PUIl pan 12 can be dispensed when the latter has been pivoted into the position 20 shown in dashed lines in FIG. On the other hand, a grinder can of course also be used, which has its own separators or separators, so that the special separator 16 can be omitted.

For the drive, i.e. for the rotation of the filling pan 12 when it is in position 20 during the dispensing of the grinding medium from the discharge chute I9 is a drive 21 provided to the abrasive medium by turning the pan in to distribute this evenly. An uneven distribution of the filling material would lead to the pan being crooked hangs, so that difficulties in transport, alignment and emptying can arise, with in addition, the discharge of the product into the mill would take place unevenly. A friction drive can be used as the drive such as a rubber-coated friction roller, albeit preferably a magnetic drive system as will be described below, is used.

The separator 16 preferably has screens with different Mesh sizes, so that reusable abrasive media of Fragments, as they often arise during grinding, can be separated, the latter by a slide, not shown be delivered. When the pan 12 has been refilled with the grinding medium on the part of the separator, it can

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be placed on the floor, for example in a The rack is stacked on other pans, or it can be emptied into the grinder 10 again with a new filling will. In addition, the refilled pan can be put in another mill of the same type as the mill 10 by means of of the crane 14 are emptied. It is also possible to take over a pan by means of the hoist 14, in which is a grinding medium with different dimensions * or of a different type, which is for a new grinding process to be used in the mill 10. There are therefore a wide variety of options for the filling pan the types and dimensions of the sole grinding medium, the mills etc. possible in the loading device according to FIG.

The device from FIG. 1 is to be explained in detail below γ , the mill 10, as already mentioned, representing a conventional unit. This mill 10 has a lower part 25 which carries the mill trough 11 on elastic organs, not shown, such as, for example, springs or the like. A vibration drive is arranged inside the mill, which is coupled to the mill trough in order to make it vibrate. The mill trough itself has a column 26 in the middle, which has a cover 27 with a shoulder 28. This approach serves, as will be explained below, to open the bottom of the pan 12 so that its filling can fall evenly distributed into the mill trough 11.

The hoist 14 has a fixed lower part 30, which stands free or is connected in any suitable manner to the lower part 25 of the mill, for example via two plates that are welded to both lower parts,

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or the hoist can also be connected to the substructure of the separator. This lower part 30 carries a vertically standing pivot pin 31 which carries a vertical column 32 of the crane in order to be able to pivot the pan 12 and align it precisely. At the upper end of the column 32, a horizontal tree 33 is attached, which carries a hoist or a winch 34 on a hook 35. A counterweight 36 can also be provided. A chain 37 runs from the winch 34 to a support member 38 at the outer end of the stabilizer arm 13. The bottom 39 of the support member 38 has a slot 40 for hanging the pan 12, which is at right angles to the arm 13 (FIG. 1) or at an angle ( Pig. 3) runs. The inner end of the arm 13 is connected to two flanges 43 and 44, which in turn are connected by two plates which surround the column 32. Rollers are provided on the inner sides of these flanges (Fig. 2b) so that the stabilizer arm can roll up and down on the column 32 when the winch 34 is operated. In order to be able to pivot the hoist around the pivot pin 31, a handle 45 is provided so that the pan 12 can be pivoted over the mill 10 or another nearby mill, into position 20 for refilling the sole grinding medium or into another position. in which it is to be placed or stacked. The diameter of the pan is slightly smaller than the inner diameter of the mill trough 11..

The vibrating separator 16 can be designed in the usual way and has a lower part 50, which with the lower part 25 of the mill is connected, as well as a sieve chamber 5I. This sieve chamber has one or more sieves and is by means of a motor and a vibrator 52 in vibrations

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offset. The sieve chamber can have an upper coarse sieve, by means of which the grist is separated from the grinding medium, as well as a lower fine-mesh sieve, by means of which the reusable abrasive media can be separated from fragments. The separator can also be a have somehow suitable washing system, not shown, to the sole if medium and / or the grist> · * Wash or otherwise treat. As already mentioned, becomes the reusable grinding medium through the chute 19 released into the pan 20 below. Even if the grist is somehow appropriate from the upper sieve of the separator can be removed, as already mentioned, a magnetic separator with a circulating conveyor belt can be used 17 can be provided to accommodate certain metal parts

The drive system 21 shown in detail in Figures 2a to 2c consists of an electric motor 16, which via a chain 16 with a magnetic roller or several magnetic rollers 22 is coupled. An idle roller 23 ensures the correct tension of the chain 61. The roller or rollers 62 preferably have a diameter of 10 cm. The motor

* shaft can also be a metal wheel or a metal pulley

wear, which bear directly on the rollers 32 and can therefore drive them directly, so that the chain drive 61 can be omitted. This drive can be connected to the overall device in various ways. As shown in FIGS. 1 and 2a, a carrier 6k can be attached to the substructure of the separator 16 or also to the substructure of the crane or the substructure 25 of the mill. A U-profile 65 (Fig. 2a) is attached to the carrier 64 and carries two support plates 66 and 67. These support plates can in turn

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carry two support arms 68 and 69 pivotably, on which the motor 60 and the roller 62 are then again attached. These support arms 68 and 69 are articulated to the support arms 66 and 67 via a pivot 70. A spring 7I is arranged between the arm 69 and the carrier 6k , while stop plates 72 and 73 on the arm 69 respectively. are attached to the carrier 64 to facilitate detachment of the pan from the magnetic drive in the manner to be described below.

The magnetic roller respectively. the magnetic rollers 62 have two functions. When the round pan 12 is pivoted into the drive position, the roller pulls it towards itself and can thereby driving the pan. Preferably the pan driven at a speed of 15 to 20 rpm to produce a even distribution of the grinding medium from the separator in to reach the pan. While the pan is being filled, the first push of the sole grinding medium into the pan will cause the There is a tendency for the latter to lurch, i.e. to swing away from its rotary axis and, as a result, to move away from the drive rollers 62 solves, but this is overcome by the magnetic driving force of the rollers. Also, there will be any difficulties switched off with regard to friction and pressure when driving the pan by using the magnetic drive. To solve The pan from the drive roller can move the pan clockwise be locked back about the pivot 70, wherein the tension spring tensions, so that the pan is then suddenly pulled forward until the stop plates 72 and 73 to Effect come so that the pan's moment of inertia takes them off the roll flings away. On the other hand, the regrind or the regrind mixed with the grinding medium can also be taken directly from of the grinder in the pan when the drive can be arranged to remove the material from it can accommodate.

009848/1307

A modified version of the drive 21 is in the Figures 2b and 2c shown, the U-profile 65 on Stabilizer arm IJ is articulated. The drive system can clockwise by any suitable arrangements such as, for example, acted upon by a spring (not shown) (FIG. 2b), around the rollers 62 constantly to press against the pan 12. In the embodiment according to FIGS. 2b and 2a, the support arms 68 and 69 are directly on the U-profile 65 attached. Of course, the rollers 62 shown in Figures 1 and 2 are rotatable in suitable Bearings or cans stored.

As already mentioned, never has bracket 38 of the stabilizer arm I? a slot 40 in the bottom. This slot can have the design shown in Figures 2b and 3, according to which it widens at the outer end 75 so that the support pin 76 (Fig. 2c) and the flange 77 of the pan can be easily inserted into the arm 13. The holder can have the box-like shape according to FIG. 1 or, as shown in FIGS.

Figure 2b shows a flange 77 with one for one Pan size suitable diameter with the flange on the support pin 76 in holder 38 in the center line of the stabilizer arm 13 can be arranged. In Figure 3 there is a pan in a different dimension with a larger one Flange 82 is shown, which is mounted in bracket 38 somewhat outside the center line of stabilizer arm I3 1st. This training therefore enables the rotation of

009648/1307

Pans of different diameters with the help of the magnetic drive. The chain 37 of the winch 34 can be hooked directly 84 of the pan are hooked or near the outer end of arm 1 ?.

In Figures 2b and 2c is also the type and in detail Shown in the manner of the puddles 43 and 44 of the arm 13 are interconnected by means of plates 90 and 91, two upper and lower rollers being provided, of which in however, only the upper rollers 92 and 93 close to the figures are seen. These rollers are on the side surfaces of the Column 32 on so that the stabilizer arm 13 is unimpeded this point 32, as already mentioned, can be moved up and down is. In addition, a base plate or base plate 95 can be provided on which the lower part 30 of the hoist is attached and which also the lower parts of the mill and the separator if for any reason so desired.

In Figures 4a to 4c, the round filling pan 12 is the The device described above is shown in a different embodiment. This pan 99 has a hinged bottom 100, which when the pan is placed on the grinder 10 is released and opens. This pan 99 consists of a cylindrical housing 101 with a bottom flange 102 and a frustoconical insert 103 attached to the housing and to the flange upper end over several rods I05 on the inner wall of the Housing 10Γ and in the lower area by several rods

106 connected to the insert 103. The bottom 100 of this pan 99 consists of two semicircular floor segments

107 and 108, which are hinged by a bolt I09

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are connected to each other, which passes near the lower edge of the central cone 104 through this »As a reinforcement of the housing 101 can have a splash 11Φ on its upper edge are provided.

The two floor segments 107 and 108 are locked in their closed position by a locking device. Included are two identical to each other for both floor segments

| l locking devices provided, of which, however, in Figure 4a only the left is shown. Any of these locking devices has a bolt 112 which engages resiliently in a holder 113 on the corresponding floor segment. This bolt is connected to a release arm 114 which, at its upper end, can be pivoted into two tabs 116 and II7 is stored. Once the lower end 118 of the trip arm 114 hits a cam surface II9 on the top the mill 10 abuts, the bolt 112 is pulled out of the holder 113, whereby the corresponding floor segment can fall down into the inclined position shown in dashed lines in FIG. 4a. Typically, the arm 114 will have a Spring 121 urged so that the bolt 112 in the

* Bracket 113 engages while a spring 122 is provided

is to move the floor segments I07 and I08 into their closed position withdraw after the abrasive media from the pan 99 slipped into the mill. In this embodiment, the pan 99 gives the grinding medium practically in the form of a circular ring in the interior of the mill trough 11 of the mill 10, so that a relatively even distribution of the grinding media in the Mill trough is reached. To empty a filling pan designed in this way, the center column needs to be at the top No special organ of any kind should be provided for the mill.

009848/1307

The pan construction according to Figure 5 consists of one cylindrical housing I30, a conical insert I31 and two semicircular floor segments or flap doors 132 and I33. The support pin 76 protrudes into the pan and is connected to the upper end of a cone 134. On the inner wall of the housing I30 is by means of several radially extending rods 136 a frustoconical Plansch 135 applied. There is also a ball thrust bearing 137 provided, the arrangement of which is particularly clear Figure 5 can be seen and which also according to the pan Figure 4a is used. The floor segments 132 and 133 are in the same manner as the floor segments I07 and I08 in FIGS Figures 4a to 4b articulated to one another by means of a bolt 138 connected, but here the hinge pin I38 is not connected to the cone 134, but the floor segments can move freely up and down with respect to this cone 134. The inner edges of the two floor segments 132 and also carry circular guides 139 and 140. When the cone 134 is completely lowered, the central parts of the both ground segments I32 and 133 on it while theirs The outer edges rest on the insert I3I so that the in take the closed position drawn in full lines. The floor becomes the result of the weight of the abrasive medium on the segments kept closed. The lower end of the support pin 76 protrudes into a cylindrical guide 141 of the cone 134, both parts being connected to one another by means of a bolt 142. This bolt 132 slides in a slot 143 in the guide. In this way, the cone can move freely on the trunnion 76 move up and down.

When the pan is lowered onto the grinder, the cone settles 134 on the cover 27 of the center pin of the mill 10, so that

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the cone 134 cannot lower itself any further, while the housing 130 moves into the position shown in phantom in FIG further lowers. As a result of this lowering, the central parts of the floor segments I32 and I33 are in the area of their guides 139 and 140 raised on the cone 134 and stand out from the insert I3I with their outer edges, so that a practically circular opening 144 is created in the bottom of the pan, through which the pan can be emptied. After the pan has been emptied, it is raised so that the cone can slide downwards and the floor segments in turn can assume the horizontal closed position. If necessary, the floor segments can also be closed by hand will.

Alternatively, the center column can also have a remote control, e.g. with a pneumatic working cylinder, whose The piston rod protrudes upwards and is able to open the pan. With such an arrangement, the pan needs only to be lowered onto the mill, but without being able to engage with the cover 27.

In the further modification shown in FIGS. 6a to 6c a round filling pan with a circular emptying opening, this pan has a housing I50 attached tapered insert I5I and a movable one conical bottom part I52. The pan is attached to a central support I53 suspended, which is attached to the housing I50 by means of radial extending rods I54 is attached. For the tea cone 76, a spherical thrust bearing 155 is provided in the same way as in the case of the pan according to FIGS Inner wall of the insert 152 is one by means of rods I58 middle support column I57 attached. The movable floor I52

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is attached to a center cap 159, which in turn is attached to a bolt I60 which passes through the support tube 157 passes through. This bolt carries a spring I6I, which by means of an actuator 162 and a nut 163 is held. This spring! Oil usually pushes the actuator 162 with the bolt I60 and thus the Bottom I52 in the closed position fully marked in FIG. 6a downward. As soon as the actuator l62 sits on the lid of the center column of the mill, the Floor 152 is raised to the dot-dash position in FIG. 6a and releases a circular discharge opening I65, through which the grinding medium in the mill trough the Mill can drain. The lower part of the actuator 152 lies over the lower edge of the pan, so that the pan can be placed on the floor and filled here without opening the floor 152, each of the previous * The filling pans described can be fitted with flexible seals the edges of the movable floors have to have a flawless Achieve sealing on the inner walls of the pans.

Figure 7 shows a modified arrangement for lifting, lowering and lateral movement of the filling pan 12 in a similar manner as shown in Figure 1, but with a monorail system is used. This monorail system can also be mounted on a bridge crane. One vertical standing support column 170 corresponding to column 32 in In this case, FIG. 1 is on a horizontal tree I7I attached, which in turn can be moved by means of a monorail trolley 172 on a monorail I73 is. The tree I70 is attached to the trolley in such a way that it can rotate about pivot 174 so that the stabilizer arm 175 rotatable about the pivot 174 and longitudinally

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the monorail 173 can be moved back and forth «, The Stabilizer arm 175 is connected to column 170 in the same way as in Figures 1, 2b and 2c via a roller arrangement tied together. The pan holder 176 can also be used in the same way be designed as in Figures 1 or 2b. As with the arrangement according to Figure 1, a winch I77 is for lifting and lowering the stabilizer arm 175.

Such a monorail system is particularly suitable for a small, inexpensive and manually operated loading device insurance facility. For example, the monorail Replace the jib crane and use a grinder, a separator, a drive for the filling pan and an or several filling pans can be put together. You rail can be placed directly on the ceiling I77 ^ whereby the great advantage is that it can run in curves to relatively easily a second mill on the other side of the separator or other arrangements, if necessary in connection with such a system stand. For example, you can put two mills in a line one behind the other and with them a single separator load, whereby a straight monorail is required and the sole grinding medium is taken up by the separator and both Mills can be fed.

On the other hand, instead of attaching the monorail I73 directly to the ceiling I77, the monorail can also be attached Trolleys are attached, which in turn run in rails that are attached to the ceiling, so that a real bridge crane results. For the sake of simplicity, FIG. 1 shows only a single trolley I78 and I a ceiling rail 179, but of course at least it has to

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a second trolley and another rail near that other end (in Pig. 7 on the left) to hang the monorail 173 properly and to be able to proceed. With such a bridge crane the entire area of a building can be served, so that this system lends itself to full automation without further ado. The bridge can be attached to the ceiling 177 be attached or, if this appears expedient, be supported on the floor of the "hall. Such a thing Bridge crane system is particularly suitable for large systems with multiple mills and multiple grinding media.

Further preferred designs of round pans are shown in Figures 8 to 10, these pans in FIG can be transported in the same way as before described and also with the magnetic drive already described can be used together.

The dargesteUte in the figures 8a to 8e execution of a pan has a cylindrical housing 184 and movable floor segments or doors 185 and 186. These doors are approximately semi-circular and do not go all the way to the center of the pan, but are hinged to each other by a movable member I87 as for example a rubber belt connected to one another. Four rods 188 to 19I are attached to the inner wall of the cylinder 184, which lead to <Snem carrier I92. A support pin I93 is rotatably connected to this carrier I92 via a bearing 194 (FIG. 8e) so that the pan can be set in rotation by the magnetic drive. The doors I85 and 186 each carry two upwardly projecting links I95, be between 196 and I98, which are articulated in some suitable manner with the support rods 188 to 190. Near the

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At the bottom of the housing 184 a guide 200 can be attached (Fig. Sd), which is a guide for an attachment 201 (Fig. 8c) of the cover 2? the middle! pillar 26 of the mill 10 forms. As in FIG. 8c ^ © igfe ^, when the pan is lowered onto the bucket 10, both doors I85 and 186 swivel and are raised so that the contents of the pan can slide evenly into the mill 10 to bend the path of the mill smooth again, so that it serves as a sealing * hinge, which is a jammed floating medium

does not let through, and sum the other two doors I85 and 186 against the turn of the housing 184 in the closed position presses, as Figure 8a shows.

A typical pan, as shown approximately to scale in FIGS. 8a and 8b, has an outer diameter of 101.6 cm (^ O ⁸⁸ ) and a height of 45 cm (17 ")" with the doors in the floating position 7 ^ 6 cm (5 ⁸⁸⁾ are above the bottom edge of the housing 184 ". the inner edges of the two doors are I5 cm (6") apart, while the flexible hinge strip "20 cm wide (8 ™), so that on each side of 2.5 cm (I ") remains for attachment to the door edges.

The filling pan shown in FIGS. 9a to 9f has a truncated cone-shaped housing ZlQ ₈ which is rotatably suspended on a support pin 211 by means of a bearing corresponding to the bearing 194 in FIG. 8e and by means of several rods 212. In addition, the pan can have a Bodeaflansch 213 as protection for the Bodensteuenmg, "will be described in detail below",

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At the bottom of the housing 210 there are two semicircular bottom doors 214 and 215 which, as FIG. 9a shows, overlap somewhat. These doors are connected to the housing 210 via a linkage, which can be seen particularly clearly from FIG. 9c. Two axles 217 and 218 are fastened in brackets welded to the inner wall of the housing 210. With the doors 214 and 215 shafts 219 respectively. 220 connected. In addition, shafts 221 and 222 are firmly connected to the two doors. The shafts 2I7 and 219 are coupled to one another via stub shafts 224 and 225 and bushings 226 to 229. In the same way, the shafts 218 and 220 are coupled to one another by catfish stumps 23I and 232 as well as bushings up to 236. This arrangement allows the doors 214 and 2I5 to move around the shafts 217 or respectively. 218 and around the waves 219 respectively. Turn 220. Between the shafts 218 and 212 and 217 and 222 are bushings. 240 to 243 control arms 238 and 239 are arranged. These waves control the angle of movement of doors 214 and 2I5 as they open and close. As a result, as shown in FIG. A plurality of ball rollers .247 to 250 and 25I to 254 are attached to the underside of the doors 214 and 215, as shown in FIGS 9b and 9c show, and roll on the curved neck 245 ^a *> * in order to reduce the friction and a proper opening of the Bring about doors. On the control arm 238 rollers 256 and 257 and on the control arm 139 rollers 258 and 259 are attached, which support the sliding rollers 247 to 254 in the centering and facilitate the correct opening of the pan base.

Figures 9a to 9d incline the pan described above approximately true to scale and has such a pan at

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a typical design has an outside diameter on the 41.5 "(105 cm) top edge, while tapering to 24.5" (87 cm) toward the bottom edge of the case. The height is about 33 cm (13 ") * plus £ cm (2") each for the Top and bottom flange are added. The door segments are approximately 44 cm (17.25 ") in diameter. The center lines shafts 217 and 218 are each 10 "from the center of the pan, while the centerlines of shafts 2I9 and 220 each 7 * 6 cm (J ") from the center lines of waves 217 respectively. 218 are removed. Each of the arms 238 and 239 has one between its pivot points Length of 4? cm (17 "), i.e. arm 238 is 43 cm from the respective center lines of shafts 218 and 221 are removed.

The filling pan shown in Figures 10a to 10d is designed in a similar manner to the pan according to FIG. 8, but with the floor segments or doors in a different manner are arranged and operable. In this embodiment, the pan has a frustoconical housing 270, which rotatably hangs in the same way as in Figures 8 and 9 on a support pin. Arched bars 27I and 272 are welded to the bottom of the housing, which over with crossbars 273 and 274 welded together are connected. The floor segments or doors 275 and 276 are pivotably arranged on the rods 27I and 272. This is achieved for each door via a T-piece 277 (FIG. 10c), which is welded or otherwise fastened to the rod 27I is and its arm slide within a chamber 278 which is formed by two U-profiles 279 and 28o attached to the Bottom of the door 275 are welded. The door 276 is connected to the rod 272 in the same way.

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The inner edges of doors 275 and 276 are flexible over a Part 28I connected to one another in a manner similar to that in FIG. 8e. Pederstahlbander 282 and 28? are also at this four edges attached. An actuator consisting of a cone 284 which is welded to an intermediate piece 285 is, which in turn is welded to a crossbar 286, is to open the doors 275 and 276 when putting on of the cone 284 is provided on the neck of the lid of the central column of the mill. The rod 286 is on the belts 282 and 283 as well as the flexible part 28I, as shown particularly clearly in FIGS. 10b and 10d. A U ^ profile 287 can be welded to the circumference of the housing 270 in order to provide a circular contact surface for the magnetic rollers to rotate to surrender to the pan. A U-profile 288 can also be welded to the lower outer edges of each door, in which an elastic seal 289 (Fig. 10a) is used can be.

As already mentioned at the beginning, the invention can also be used for grinding mills in which the ground material, such as chemical mixtures, color pigments, etc., is mixed with a grinding medium put into the grinder to grind the grist or to reduce its grain size in any desired way.

Expectations

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Claims (12)

Expectations . Feeding device for vibration mills with a mill trough that can be fed by means of a filling pan the sole if medium and the ground material to be processed, characterized in that a crane (14; I70-I73) with a Stabilizer arm (13; I75) for transporting the filling pan (12) through the mill (10) for the purpose of emptying its filling into the mill and to a receiving point for receiving the mill dispensed material is provided and the stabilizer arm with its one end with a support column (32; 170) is connected and at the other end (I76) carries the filling pan, and that the filling pan consists of a housing (101; I30; I50; 184, 210, 270) with one when touching one Part (27) of the mill in the open position can be brought to the bottom (100) exists. 2. Device according to claim I _9, characterized in that the support column (32; I70) rotatable (Jlj 174) is arranged next to the mill (10) and the stabilizer arm (13; I75) with the filling pan fixedly suspended at its free end and is mounted on the support column so that it can be moved down. 3. Device according to claim 1, characterized in that the support column (I70) with its upper end rotatable about its longitudinal axis on a trolley (I72) hangs and this trolley can be moved along a rail (173). 4. Device according to claim 1, characterized in that the housing of the filling pan (12) has at least one circular edge part and with the housing a support element (76, 77, 84; 193j 211), on which it is connected around aPine longitudinal axis is rotatable, and that the movable floor consists of several 0098Λ8 / 1307 : ^ i 202429Θ ^: movable doors (107, 108; 132, 133; 185, 186; 214, 2153 275, 276), which are normally held in the closed position when the pan is moved into a predetermined position Position opposite the mill, however, in the open position are bringable. 5. Device according to claim 4, characterized in that the support member connected to the housing (193) ^e in bearing (194) and this bearing via support arms (I90, 191) with the housing j (l84) is connected, and that the Doors (I85, 186) are connected to one another and articulated to the support arms by means of a flexible member (I87). 6. Device according to claim 5, characterized in that that near the lower end of the housing a guide (200) is arranged, by means of which the alignment of the pan to a middle one protruding upwards from the mill trough öer mill Approach (201) is achievable. 7. Device according to claim 4, characterized in that the Boäentüren (214, 215) by means of a with them be zw. articulated linkage connected to the housing are interconnected (Fig. 9). 8. Device according to claim 7, characterized in that that the linkage two waves arranged with the inner wall of the housing (210) at a certain distance from its center (217, 218) and two further shafts (2I9, 220) are attached to the doors (214, 2I5) near their outer edges and Articulated connections (224-228;. 231-236) between the first Wave pair and the second wave pair and two with the first wave pair BEZW. control arms articulated to the doors (238, 239) are provided. 009848/1307 9. · Device according to claim 4, characterized in that near the lower end of the housing (270) support members (27I, 272, 273, 277-28O) are arranged and by means of a flexible organ (281, 283) interconnected doors (275, 276) are hinged to these support members (Fig. 1 ©). 10. Device according to claim 9 *, characterized in that that with the doors (275, 276) normally downwardly facing actuating members (284-286) are connected, which at * touch part of the grinder when the filling pan is in a predetermined position in relation to the mill. 11. Device according to claim 1, characterized in that the housing (I50) of the filling pan (12) near its lower End has an insert (I5I) and the movable floor from a substantially conical part (I52), which is movable up and down within the housing and its Jacket comes into contact with the insert for the purpose of closing the bottom, and that between the movable bottom and this insert a spring device normally closing the bottom is provided, which consists of an inside of the k Housing and spring housing connected to the insert (I57) and a spring (I6I) arranged therein, during which Cone has a through the spring housing through axis (I60) which ends in an actuator (162), which near the middle extension (28) of the mill (10), whereby the bottom can be raised and the filling pan into the mill can be emptied. 12. Device according to claim 1, characterized in that the outer end of the stabilizer arm (13) has a receptacle (38) for a support member of the filling pan (12) which has a 009848/1307 202429.8 ZS opening offset from the longitudinal axis of the stabilizer arm (40) has that the support member of the filling pan consists of a flange (77) and a support pin (76) und.die Receiving lateral guides (78, 79) and a base (29) in which the opening is formed around the Receiving trunnions, the bottom piece and the side guides are designed such that different sizes Flanges of different sized filling pans can be brought into predetermined positions and thus with a circular one Edge piece can be brought into engagement with the drive (21) which sets the pan in rotation. PAe Dr Andrejewski, Dr Honke. 009848/1307