FI64333C - URLASTNINGSFOERFARANDE FOER KVALITETSUTJAEMNINGSLAGER - Google Patents

Description

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FINLAND —FINLAND (21) P »ttnttlh» k * mu * - Pit «nt» n »6knln | 782326 (22) H »k * ml» cloud - Aneöknlngtdag 26.07.78 (23) Alkujdlvt — GHtljhtt * d * g 26.07.78 (41) Tullut JulklMksI - Bllvlt ofiuntllg 27.01.80

Patents · and registrations NlhUviksl panon] »moonlight date- '

Patent · och registerstyrelsen 'Ansökan utlagd och utl. * Kr | ft * n pubUcerad y · 1 * 3 (32) (33) (31) Privilege requested - Begird prloritet (71) (72) Tapio Saalasti, Arinatie U, 00370 Helsinki 37, Suomi-Finland (FI) (5ä) The present invention relates to a method of unloading which is used to equalize the quality of bulk goods. In this case, the warehouse is also used as a compensating warehouse in the sense that if, for example, mineral is mined from the mine only during the day, goods are received from the warehouse throughout the day. But the most important function of this warehouse is to level the characteristics of the goods.

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The disadvantage of straight lines is that the conveyor belts become long. Likewise, storage areas are long, so finding a suitable area can be difficult. Direct storage requires high power and long cable winding machines are expensive and prone to interference.

Today, the use of circular ring-shaped storage piles has already begun, which has great advantages over straight piles.

OE Patent Publication No. 1281942 discloses a structure in which the expansion tank is arcuate and the filling and discharge devices are supported on the inside of the pile. The unloading cone always takes stuff from the end of the pile to the end of the sick at a height and then drops a little lower and takes the floor again. The unloading device is in two parts, so that it unloads along the front edge of the pile with the inner part of the unloading device and with the outer part on top of the pile. The discharge mechanism makes a long movement and the discharge result is not the best possible.

U.S. Pat. No. 3,049,244 also discloses an apparatus in which both the filling and discharge mechanisms move around the circumference of a circle and the stock piles are in the shape of an arc of a circle. In this construction, the unloading device is supported by rails «inside and outside the shaft to rotate the center. The device unloads the pile from the bottom. The head of the pile needs to drain down because the scraper only takes from the bottom. In frost, this method does not work. Again, the evenness of the goods taken from the pile is not the best possible.

The object of the present invention is to improve the quality of the unloaded goods so that the average concentration concentration of the property taken from the heap is exactly the same as the theoretical average concentration of the heap.

Li 3 64333 The method of unloading a quality equalization warehouse according to the present invention is characterized by the features mentioned in the characterizing part of claim 1.

The method of unloading the quality equalization warehouse according to the present invention and the equipment used therein will be described in the following description and in the basic drawings, Figs. For the sake of brevity, the word quality equalization warehouse is used in the following format as equalization warehouse.

Figure 1 shows a top view of a compensating stock according to the invention. The stock pile is thus circular when viewed from above. The loading and unloading mechanism is in the middle of the pile, Fig. 2, so that it. Both the filling and unloading mechanism are mounted on a central column and the wheels of the machine bodies rotate on a rail circle inside the pile.

Cross-section A -A, Fig. 1, shows a storage method in which the end of the stock filling belt is first at the letter m, the next day at ti, etc., and if five days a week are worked, it can be assumed that the stock on the fifth day (p) is full . Figures B to B, on the other hand, show the way in which the end of the storage filling belt is always in the middle of the storage heap and rises up all the time during filling. In this case, a triangular pile m is filled into the warehouse on Monday, in a sort of way on Tuesday the ridge roof is t the previous one, etc. On the fifth day (p) the pile is full. The pile can also be made in such a way that the pile has several tens or hundreds of small piles with a triangular cross-section in parallel and on top of each other. The stock pile produced according to this is thus in the shape of a full circle or a semicircle, depending on the filling and the stock sampling.

It is often possible to fill 180 °, i.e. the storage area C - D (Fig. 1), and then start filling the other side D - F. At the same time, the unloading device starts to empty the previously filled side at the letter C towards the pile. Thus, the discharge continues uninterrupted, the so-called endless pile.

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The filling machinery of the expansion stock is as follows:

The belt conveyor 1, supported by a central column 16. The funnel 2 and the guide 3 are rotatably mounted on a central column.

They rotate with the body 18. The frame is mounted on a central post with a bearing 17 and the outer circumference of the frame has two wheel supports 22 to which are attached wheels or bogies 23 running on a rail circle 24.

On the body 18 there is in turn a filling conveyor carriage 19 rotating about a vertical axis. It is provided with a filling conveyor 4 mounted on a horizontal shaft 20 so that the hydraulic lifting cylinder 21 can raise and lower the outermost end of the filling conveyor. The carriage 19 has a drive mechanism so that it and the filling conveyor 4 can be turned to the desired position so that the end of the filling conveyor 4 is first at the inner edge of the pile and the filling conveyor turns when filling the pile so that it reaches the pile centerline (Figure 2).

2 The right side of the image shows the carry-over stocks discharge side of the machine. On the discharge side, there is also a frame 18 'mounted at the center point, which rests on a rail circle 24 and rotates around the center post.

At the floating end of the body there is a scraper 8 mounted on a horizontal shaft which can be raised and lowered by a winch 7. The body has a fixed post 27, the upper end of which has a wire wheel 26 so high that the scraper 8 can be lifted parallel to the inside edge of the pile. Near the inner edge of the pile there is a protrusion 9 and below it the outer end of the belt conveyor 10. This belt conveyor rotates with the body 18 'and has an inner end above the hopper 12. From the bottom of the funnel, the guide 13 leads to the belt conveyor 14.

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Around the central column is a slip ring housing 28 and above it an instrument and driving cabin 25. This can also be located on top of the scraper body, e.g. at the height of the lower end of the column 27.

The power transmission cables entering the equipment go up the central pipe 16 to the electrical connection room 28, where each phase is connected to its own fixed sliding rail around the pipe 16. The brushes rotating with the room 28 transfer power to the electrical switch room and to the cab 25, from where all the electric motors of the equipment are started, adjusted and stopped. It should be noted that the transfer of electrical power from the cab 25 to the filling device is also very simple. The U-shaped down-hanging cables allow stock to be moved between the device and the filling device by about 300 °. Thus, no faulty switches are required in between.

Both the filling equipment and the unloading equipment are equipped with limit switches, so they can be made fully automatic if desired. They then stop when either pile is full or empty.

The operation of the filling stock filling mechanism is as follows:

Arrow 1 shows the arrival of the goods in the inlet conveyor, from where the goods fall into the hopper 2 and further along the guide tube 3 to the filling conveyor 4. This lifts and transports the goods, if the above-mentioned Λ - A, first to the edge of the pile and gradually to the middle of the pile. When the entire filling device 18 and with it the filling conveyor 4 of the device simultaneously move back and forth 180 °, a pile of C - D shape shown in Fig. 1 is formed.

If the pile is formed in the manner B-B, the outer end of the filling conveyor remains at the center line of the pile at all times. It is down first and only rises up with the pile brush.

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When Pile C - D is complete, begin unloading the pile from point C toward the pile. At the same time, the filling machine fills the new pile D - F so that the new pile is a continuation of the pile C - D.

The unloading mechanism thus continuously unloads the pile in the same direction, which does not end at all. So there will be no machine changes from pile to pile.

The operation of the unloading machinery of the expansion warehouse is as follows:

The goods are in pile 6, picture 2.

A winch 7 raised and lowered by a scraper blade 8 having a lower part raappaketju moves towards the center, the center of the transported goods in the warehouse, where it drops over the edge 9 of the belt 10. This in turn will drop the goods at the upper end of the arrow shown by a solid 11, a circular upper portion to the hopper 12. This hopper trade currencies along a guide 13 to a belt 14 which takes the goods, as indicated by arrow 15, out of stock to the factory.

The pile C - D, Fig. 1, made in the A - A manner, is best dismantled by placing the scraper 7 parallel to the front edge of the pile, Fig. 1, A - p and driving a distance C - D and then lowering the scraper slightly and driving back D - C until the pile is completely driven off. Then we move to the adjacent pile and at the same time the filling machine makes a new pile C - D. However, the best result is obtained in the following way.

If the pile is made in the D - B way or in small triangular piles, it is best to disassemble it from the end of the pile. The scraper leaves position H - K to drive towards the pile and drives to position H - L, Fig. 1. Let the horizontal driving distance a - c be, for example, 22.2 m measured on the pile center line a - c. The scraper is then at H - L 'seen from above, Fig. 1. At the same time, the winch 7 lifts the scraper up the ridge of the pile to point c. Thus, when viewed from above, the scraper has taken off the pile from the a-b-c-d-a shaped surface of Fig. 64333. Once the scraper has risen to its highest position, it will no longer continue to rise. But it still continues, for example, its forward movement of 20 cm. Thus the total forward movement is 22.2 m. The scraper of this j'Ike leaves backwards.22 m and at the same time the winch 7 lowers the scraper. Thus, the scraper again takes stuff from the surface of the triangle a-b-c-d-a. This is constantly repeated. If One movement lasts, for example, 10 minutes, the scraper advances 1.2 m per hour.

The good equalization power of the device is based on two factors. First, the rotary filling device can be used to make piles with many layers, e.g. 1000 layers.

Secondly, for the discharge according to the invention, in which each scraper plate takes two small portions from each 1000 layers of a pile made in the B-B manner.

If the pile has been made for 5 days, for example, there are 200 layers in the pile from the extraction every day. Thus, the average concentration of the "goods plate" taken from the end of the pile is very close to the theoretical concentration average of the whole pile, and the average concentration of some property of the goods from the pile is thus exactly the same as the theoretical average concentration of the pile.

From the above description, we find that the machinery is really simple and therefore simple and very reliable.

The accompanying drawings, Figure 2, show a solution according to the invention. The apparatus can be modified within the scope of the claimed method. An example is an embodiment in which the filling and receiving side is built on the same frame, which rotates as the center of the column 16. The structure is then simpler and the device a little cheaper. It can also be quickly turned 180 °, ie the discharge and filling side can be changed. However, the device shown in Figure 2 is more useful in most cases, as both sides can operate separately.

Likewise, the conveyor 8 may be provided with buckets or scratching plates, or a combination thereof, depending on the type of goods being handled. Similarly, Figure 2 shows the entry of the goods to this equipment and the exit of the goods from the equipment by belt conveyors. Of course, it can also be done in other known ways.

In the example, both the drive units of the pile and the unloading mechanisms of the pile are shown to be supported at their inner end on the center column and at the outer end on the rail. However, there is nothing to prevent these machines from being supported on two rails or a pair of rails.

The inner end can also be supported on the rail instead of the center post.

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Claims (2)

9 64333 PATENT CLAIM A method of unloading a quality equalization warehouse, in which the goods to be stored are introduced into a circular pile (6), from where it is taken by means of a scraper (8) and a belt conveyor (10), both filling mechanism (2-4, 18-21) and scraper mechanism (7,8,10 , 18 ') is supported only on the center post (16) of the pile and on the rail or rails (24) inside the pile, characterized in that the scraping mechanism (7,8,10,18') 1 , always forward a little longer than backwards, at the same time going forward the scraper (8) rises and, on return, lowers the pile along the oblique end surface.