EP0177412B1 - Vorrichtung zum Zerkleinern von Produkten, insbesondere von Futtermitteln - Google Patents

Vorrichtung zum Zerkleinern von Produkten, insbesondere von Futtermitteln Download PDF

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Publication number
EP0177412B1
EP0177412B1 EP19850401874 EP85401874A EP0177412B1 EP 0177412 B1 EP0177412 B1 EP 0177412B1 EP 19850401874 EP19850401874 EP 19850401874 EP 85401874 A EP85401874 A EP 85401874A EP 0177412 B1 EP0177412 B1 EP 0177412B1
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EP
European Patent Office
Prior art keywords
hammers
particles
crusher
dispenser
produce
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Expired
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EP19850401874
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English (en)
French (fr)
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EP0177412A1 (de
Inventor
André Pajot
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Simon SA
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Simon SA
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Publication date
Application filed by Simon SA filed Critical Simon SA
Publication of EP0177412A1 publication Critical patent/EP0177412A1/de
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Publication of EP0177412B1 publication Critical patent/EP0177412B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C11/00—Other auxiliary devices or accessories specially adapted for grain mills
    • B02C11/04—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge

Definitions

  • the invention relates to a device for grinding products, in particular agrifood products, of the type which includes a distributor allowing the device to be supplied with a product which goes against hammers and in which the ground material is presented on a grid. , while the rejected particles accompany the hammers, means for recycling these rejected particles being further provided to allow these refused particles to be separated from the hammers and recycled.
  • SU-A-1 047 512 relates to a hammer mill for fodder comprising a rotor and a separation chamber situated in the upper part in which the ground products are collected, through a curved perforated plate.
  • a semi-cylindrical perforated plate is provided below the grinder to allow the passage of sufficiently fine particles to a lower discharge container.
  • the main function of the chimney provided in this crusher is to conduct the ground products to the separation chamber located in the upper part.
  • the rejected particles which have been entrained with the sufficiently ground products, can then fall towards the grinder, but they have no effect of entrainment on the products to be ground introduced laterally. A significant part of the energy is consumed by the upward propulsion not only of the particles which will be rejected but also of the acceptable ground material which is collected in the separation chamber located in the upper part.
  • US-A-1,975,406 shows a grinding device in which the means for recycling the rejected particles are constituted by a sort of adjustable deflector flap.
  • Such recycling means by directing the rejected particles against the hammers, make it possible to avoid an excessive accumulation, in the grinding device, of rejected particles.
  • the efficiency of such a grinding device needs to be improved, in particular with a view to reducing the energy consumed, the quality of the grinding and a reduction in noise.
  • the object of the invention is, above all, to make grinding devices of the kind defined above such that they meet the various requirements of the practice better than hitherto and in particular such that they no longer have, or to a greater extent lesser, the disadvantages mentioned above.
  • a device for grinding products in particular agrifood products, of the type in question, is characterized in that the recycling means comprise a chimney, or a double wall, by which the rejected particles rise up to descend into the crusher, the chimney or double wall being arranged to open into an area located at the bottom of the distributor, so that the rejected particles and / or the air ventilated by the crusher entrain the product to be crushed supplied by the distributor.
  • the recycling means comprise a chimney, or a double wall, by which the rejected particles rise up to descend into the crusher, the chimney or double wall being arranged to open into an area located at the bottom of the distributor, so that the rejected particles and / or the air ventilated by the crusher entrain the product to be crushed supplied by the distributor.
  • a grinding device of the kind in question is characterized in that the recycling means comprise a chimney or a double wall, determining a curved pipe which has an outlet branch, substantially rectilinear, whose outer surface is substantially coincident with a plane tangent to the path of the hammers, to allow the rejected particles to leave the grinding chamber, and a return branch capable of bringing the rejected and recycled particles back to the chamber grinding, the chimney or double wall being arranged to open into an area located at the bottom of the distributor so that the rejected particles, and / or the air ventilated by the crusher, entrain the product to be grind supplied by the distributor.
  • the recycling means comprise a chimney or a double wall, determining a curved pipe which has an outlet branch, substantially rectilinear, whose outer surface is substantially coincident with a plane tangent to the path of the hammers, to allow the rejected particles to leave the grinding chamber, and a return branch capable of bringing the rejected and recycled particles back to the chamber grinding, the chimney or double wall being arranged
  • the grating of the grinding device is generally of semi-cylindrical shape, turning its concavity upwards, the upper edges of this grating being situated in a horizontal plane passing substantially through the axis of the grinder; the distributor is arranged above the hammers so as to ensure a supply of product substantially in the vertical plane passing through the longitudinal axis of the grid and the grinder.
  • the chimney determines a curved pipe which has a vertical ascending branch, or substantially vertical, the outer surface of which is substantially coincident with a plane tangent to the upper edge of the grid, located last according to the direction of rotation of the drum carrying the hammers, said ascending branch bending, at its upper end, to descend and connect to the distributor, so that in the lower part of this distributor, located above the grinding chamber itself, the rejected and recycled particles entrain the product arriving by the distributor against the mat.
  • the chimney or the double wall makes it possible to recycle the air ventilated by the hammer mill and the rejected particles, recycled by this chimney or this double wall, are entrained at a relatively high speed.
  • the momentum of the recycled particles is reused, thanks to the chimney, to increase the shock of these rejected particles, and of the product arriving by the distributor, against the hammers, so that the grinding is carried out in better conditions;
  • the chimney or the double wall changes the direction of this amount of movement so as to orient it in the proper direction to ensure such an increase grinding efficiency.
  • the return branch of the chimney can make an average angle of about 45 ° with the outlet branch.
  • the connection between the exterior surfaces of the outlet branch and the return branch is ensured by a substantially semi-cylindrical surface turning its concavity towards the interior of the chimney; preferably, the radius of curvature of this surface is at least equal to 150 mm.
  • the chimney or the double wall are arranged in such a way that the speed of the rejected recycled particles, on their entry into the grinding chamber, is substantially of the order of half the peripheral speed of the hammers.
  • the rejects are recycled with a speed of around 40 m / s.
  • the chimney or the double wall extend along the entire axial length of the grinding device.
  • This chimney or double wall can form a removable assembly suitable for being fixed on corresponding connection zones provided on the grinding chamber itself and on the distributor.
  • the product distributor in the mill can be equipped with a densimetric separation device arranged to laterally divert the product flow going to the mill and to collect the heavier particles which undergo a smaller lateral deflection than the lighter particles.
  • the dispenser can also be fitted with a magnetic separator.
  • An adjustable orientation flap can be provided at the entrance to the grinding chamber to adjust the flow of the mixture of the product and recycled rejected particles towards the hammers.
  • a grinding device in accordance with the invention, exhibits markedly improved performance.
  • Figure 1 of these drawings is a cross section of a grinding device according to the invention.
  • Figure 2 finally, is a view along line II-II of Figure 1.
  • the product P falls by gravity into the distributor 1 and descends at a speed which can be considered as zero.
  • This product P goes against hammers 2 articulated at the periphery of a rotary drum or rotor R.
  • the grinding of product P is essentially carried out at the moment of the impact of a hammer 2 with product P coming from the distributor 1.
  • the ground material 3 is presented, at hammer speed, on a grid G of semi-cylindrical shape turning its concavity upwards and located at the bottom of the mill.
  • the two upper horizontal edges of the grid G are located in a horizontal plane Q passing through or substantially through the axis A of rotation of the rotor R.
  • the grid G selects the finest particles 4 which pass through the grid and are collected in the bottom of the grinder.
  • the larger particles constitute the rejected particles 5, or refusals, and accompany the hammers, upwards, at a speed close to these.
  • the crusher B includes means for recycling the rejected particles 5 allowing them to be separated from the hammers and recycled.
  • These recycling means include a chimney 6 or a double wall through which the rejects 5 go up as indicated by the arrow f 1 directed vertically upward, to descend again, as indicated by the arrow f 2 by driving the product P in grains or seeds.
  • the rejects 5 are therefore recycled in the zone 7 located at the bottom of the distributor and above the inlet of the grinding chamber 8 proper.
  • This enclosure 8 has a prismatic shape the cross section of which, visible in FIG. 1, has the shape of a rectangle surmounted by two inclined walls 9, 10 converging upwards, to ensure the connection between the enclosure and the lower part of the dispenser 1.
  • this enclosure is formed by two assemblies, namely a sort of base 11, corresponding to the rectangular section, on which is fixed, removably by means of bolts or the like, the assembly 12 comprising the walls 9 and 10.
  • the distributor 1 is itself fixed, in a removable manner, on the edges of the upper opening 13 of the assembly.
  • the chimney 6, or double wall, is detachably fixed on the one hand at the level of the base 14 of the rising part on the edges of an opening 15 provided on the side of the enclosure 8, above the plane Q and, on the other hand, at the base 16 of the downward part, on the edges of an opening 17 of the distributor 1 for the connection of this chimney, above the opening 13.
  • This opening 13 extends along the entire axial length of the mill, above the rotor R, and preferably admits the vertical longitudinal plane passing through the axis A of the rotor, as the plane of symmetry.
  • the product P to be ground arrives from one side of the opening 13, for example as shown in FIG. 1, from the left side of this opening 13; the recycled rejects 5 arrive on the other side of the opening 13, that is to say in the case of FIG. 1, on the right side of this opening 13.
  • the partition 18 between the extension of the return from the chimney 6 and the product inlet pipe P stops at a distance h from the plane of the opening 13 sufficient for the desired drive be carried out in good conditions, as well as the mixture.
  • the plane of the opening 13 is itself located at a sufficient distance m above the horizontal tangent greater than the circle described by the ends of the hammers 2.
  • the distributor 1 can be arranged so as to allow the separation of undesirable particles before the product enters the grinding chamber 8 proper.
  • the distributor 1, above the opening 13, is arranged to make the product P describe a winding path;
  • the product P is first deflected laterally on a first side, with respect to the vertical (on the left, according to the representation in FIG. 1) by a deflector flap 19 orientable by rotation around an axis parallel to its edge upper perpendicular to the plane of Figure 1;
  • the wall of the distributor 1, located on the side opposite to the deflector 19, is also offset, in its upper part, on the same side as the deflector 19 relative to the vertical; this wall 20 then returns, in its lower zone 21, in an opposite direction, relative to the vertical, so as to deflect the product P again to bring it to the opening 13.
  • a sort of bucket 22, open upwards, and extending along the entire axial length of the mill, is provided against the wall 18, below the deflector 19 so as to extend laterally a little beyond the deflector in the direction of the wall 20 of the distributor 1; a grid 23, with adjustable passage opening, is provided in the mean longitudinal vertical plane, between the bucket 22 and the upper part of the deflector 19 to allow an intake of sucked air flowing substantially in the direction of the arrow f 3 , this stream of air then being deflected by the wall 21 and moving towards the opening 13.
  • the heaviest particles are not sufficiently deflected laterally, during their fall, to escape the cup 22 which collects them; on the other hand, the light particles considered to be acceptable to be sent for grinding, bypass the bucket 22 and can reach the opening 13.
  • a deflector flap 27 can be provided articulated around an axis extending along its longitudinal upper edge, and whose angular position can be adjusted so that the flow of the mixture of product P and recycled rejects 5 is directed at the best angle to meet the hammers 2.
  • a sort of tank 28 can be provided located above the horizontal tangent higher than the circle described by the hammers 2, and substantially at the level of the lower part of the deflector 27. This tank 28 is intended to recover heavier foreign particles, recycled with refusals 5.
  • a hatch 29, which can be opened, is provided in the wall 10, above the tank 28 to give access to the latter and remove the particles therefrom.
  • the drum R has a cylindrical shape and comprises, at its two longitudinal ends, flanges 30, 31 (FIG. 2) in the form of discs whose plane is orthogonal to the axis A. These flanges 30, 31 are connected by rods 32, forming spacers, parallel to the axis A. Preferably, an intermediate flange 33, located mid-length of the mill, and similar to the flanges 30, 31, is provided. This flange 33 is crossed by the rods 32 which it supports. These rods 32 are located radially inwardly relative to the outer contour of the flanges.
  • the flanges 30, 31 and 33 are provided with holes, in the vicinity of their external contour, through which axes 34 pass, parallel to the geometric axis A, on which the hammers 2 are articulated. These axes 34 are distributed over all the periphery of the flanges so that the rotor R resembles a squirrel cage.
  • the hammers 2 are formed by sorts of articulated rectangular plates, in the vicinity of one of their short sides, on the axes 34.
  • the hammers 2 are mounted to rotate freely on these axes 34; during the rotation of the rotor R, under the effect of centrifugal force, the longitudinal direction of the hammers is oriented radially; in fact, the center of gravity of these hammers is located beyond, in the radial direction, the axes 34.
  • Spaced rings 35 are crossed by the axes 34 and serve, in particular, to support these axes to resist centrifugal forces.
  • two hammers 2 are provided in the longitudinal interval between two successive crowns 35 or between a crown 35 and the neighboring flange 30, 31 or 33. The crowns 35 leave free space for the interior for the passage of the rods 32.
  • Cylindrical sockets 36 threaded on the axes 34, serve as spacers between the hammers 2.
  • the flanges 30, 31, 33 are supported by a shaft 37 whose axis coincides with the geometric axis A.
  • This shaft 37 passes through the end walls such that 38 closing the grinding chamber 8, and is supported, outside this enclosure, by bearings such as 39, provided with grease nipples such as 40.
  • the shaft 37 is rotated by an electric motor not shown, connected to said shaft 37 by a coupling. According to the representation in FIG. 2, the electric drive motor would be located on the left, with its axis in the extension of the shaft 37.
  • the rotor R rotates around the axis A in the direction of the arrow K ( Figure 1), that is to say in the counterclockwise direction.
  • the outer edge of the opening 15 and the outer wall of the rising or outlet part 6a of the chimney or double wall 6, are located in a longitudinal vertical plane substantially tangent to the upper edge of the grid G located last in the direction of rotation K.
  • the rising part 6a of the chimney and the opening 15 are therefore located on the right of the mill B.
  • the width of the chimney 6 is the same as that of the opening 15. This width can be of the order of 10 cm.
  • the chimney 6 extends along the entire axial length V ( Figure 2) of the mill.
  • the height s of the rectilinear part of the rising or outlet branch 6a can be between 150 cm and 200 cm.
  • the examples of numerical values are given for a rotor R whose axes 34 have their centers situated on a circumference whose diameter is of the order of 100 cm.
  • the chimney 6 determines a bent pipe.
  • the outer wall of the rising part 6a is connected to the outer wall of the descending branch 6b by a curved zone 41, constituted by a part of cylindrical surface turning its concavity inwards.
  • the radius of curvature C of this surface 41 is of the order of at least 20 cm or more.
  • the mean line of the descending part 6b forms with the mean line of the rising branch 6a, that is to say with the vertical, an angle 9 which is advantageously of the order of 45 °, and more generally between 40 ° and 50 °.
  • the descending part 6b is delimited by an outer wall 42 and an inner wall 43. These two flat walls can converge slightly towards one another in the direction of the opening 16.
  • the wall 43 can be connected by forming a dihedral, as shown in Figure 1, with the inner wall of the rising branch 6a. As a variant, this wall 43 could be connected to the interior surface of the branch 6a by a portion of cylindrical surface parallel to the surface 41.
  • the deflector 27 allows the flow of product P and refusals 5 to engage in the free space 43 between the inner edge of the tank 28 and the deflector 27 to fall on the hammers 2 which arrive at the top of their circular trajectory. It should be noted that even in the absence of recycled rejects 5, the air flow stirred by the rotor R and circulating in the chimney 6 ensures the product P through the opening 13 at a high speed which increases the impact of the product against the hammers 2, which is favorable to the good bursting of this product and to its grinding.
  • the too dense particles are collected in the cup 22 belonging to the densimetric separator.
  • the magnetic particles, which constitute foreign bodies, are stopped by the magnetic separator 24.
  • the product P falls, through the opening 13, on the upper part of the rotor R.
  • the grains of the product P are crushed by the impact with the hammers 2. They are driven, anticlockwise the movement of the rotor R to the grid G.
  • the refusals 5 exit from the enclosure 8, in a vertical upward direction, tangentially to the rotor, escaping through the outlet branch 6a, which is vertical in the example considered, to return to the upper part of the enclosure 8 via the return branch 6b.
  • the crusher with the chimney 6, behaves somewhat like a fan.
  • the supply of the grinding chamber with product P through the opening 13 takes place at a high speed with the machine's own energy thanks to the chimney 6 or double jacket.
  • the latter is advantageously arranged so that the linear speed of the rejects 5 recycled in the zone 7 is equal to substantially half of the tangential speed of the hammers 2.
  • the speed of refusals recycled in 7 is advantageously of the order of 40 m / s or more.
  • the shrinkage (loss of water from the product to be ground by heating) is reduced.
  • the grinding cycle time is also reduced.
  • Air consumption is reduced; as a result, the requirements for necessary filtering surface are also reduced.
  • the invention is suitable for all products which are to be treated with a view to reduction with hammer mills.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (11)

1. Zerkleinerungsvorrichtung, insbesondere für landwirtschaftliche Nahrungsmittel, mit einem Verteiler (1) zur Zuführung eines Zerkleinerungsgutes (P), das auf Hämmer (2) auftrifft, wobei das zerkleinerte Gut (3) abgesiebt wird, während der Siebaustrag (5) von den Hämmern mitgenommen wird, und mit einer Rückführung, durch die der Siebaustrag (5) von den Hämmern getrennt und rückgeführt wird, dadurch gekennzeichnet, daß die Rückführung einen Schacht (6) oder eine Doppelwandung enthält, durch den bzw. die der Siebaustrag (5) aufsteigt und zum Zerkleinerer zurückgelangt, wobei der Schacht (6) bzw. die Doppelwandung in eine Zone (7) einläuft, die unterhalb des Verteilers (1) derart angeordnet ist, daß der Siebaustrag (5) und/oder die von dem Zerkleinerer bewegte Luft das von dem Verteiler gelieferte Zerkleinerungsgut (P) mitreißt.
2. Zerkleinerungsvorrichtung, insbesondere für landwirtschaftliche Nahrungsmittel, mit einem Verteiler (1), zur Zuführung eines Zerkleinerungsgutes (P), das auf Hämmer (2) auftrifft, wobei das zerkleinerte Gut (3) abgesiebt wird, während der Siebaustrag (5) von den Hämmern mitgenommen wird, und mit einer Rückführung, durch die der Siebaustrag (5) von den Hämmern getrennt und rückgeführt wird, dadurch gekennzeichnet, daß die Rückführung einen Schacht (6) oder eine Doppelwandung enthält, der bzw. die eine gekrümmte Führung bildet, mit einem im wesentlichen geraden Ausgangsteil (6a), dessen Aussenfläche im wesentlichen mit einer Tangentialebene zur Umlaufbahn der Hämmer zusammenfällt und welche dem Siebaustrag (5) das Verlassen des Zerkleinerungsbereiches (8) ermöglicht, und mit einem Rückführteil (6b) zur Zurückführung des Siebaustrages in den Zerkleinerungsbereich (8), wobei der Schacht (6) bzw. die Doppelwandung in eine Zone (7) einläuft, die unterhalb des Verteilers (1) derart angeordnet ist, daß der Siebaustrag (5) und/oder die von dem Zerkleinerer bewegte Luft das von dem Verteiler gelieferte Zerkleinerungsgut (P) mitreißt.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ausgangs- bzw. Aufströmteil (6a) des Schachtes bzw. der Doppelwandung eine vertikal oder im wesentlichen vertikal ansteigende Führung ist, deren Außenfläche im wesentlichen mit einer Tangentialfläche zu demjenigen oberen Rand des Siebes (G) zusammenfällt, welcher entsprechend der Drehrichtung (K) der die Hämmer (2) aufnehmenden Trommel (R) die Ablaufseite bildet, wobei die aufsteigende Führung (6a) am oberen Ende in Abwärtsrichtung zur Bildung des Rückführteils (6b) gekrümmt ist und sich an den Verteiler (1) derart anschließt, daß in der unteren Zone (7) des Verteilers, die sich über dem Zerkleinerungsbereich (8) befindet, der rückgeführte Siebaustrag (5) das Zerkleinerungsgut (P) mitreißt, das von dem Verteiler auf die Hämmer (2) gelangt.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Rückführ- bzw. Abströmteil (6b) des Schachtes (6) bzw. der Doppelwandung mit dem Ausgangs- bzw. Aufströmteil (6a) einen mittleren Winkel (9) von etwa 45° einschließt.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Verbindung zwischen den Außenflächen des Ausgangs- bzw. Aufströmteils (6a) und des Rückführ- bzw. Abströmteils (6b) durch eine im wesentlichen halbzylindrische Fläche (41) gebildet ist, deren konkave Seite zum Inneren des Schachtes gerichtet ist.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Krümmungsradius (C) der halbzylindrischen Verbindungsfläche wenigstens 150 mm beträgt.
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Schacht (6) bzw. die Doppelwandung derart ausgebildet ist, daß die lineare Geschwindigkeit des rückgeführten Siebaustrags (5) beim Eintritt in den Zerkleinerungsbereich (8) etwa gleich der Hälfte der Tangentialgeschwindigkeit der Hämmer (2) ist, und daß insbesondere bei einer Tangentialgeschwindigkeit der Hämmer (2) in den Größenordnung von 90 m/s die Geschwindigkeit des rückgeführten Siebaustrags (5) in der Größenordnung von 40 m/s liegt.
8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Verteiler (1) derart Ober den Hämmern (2) angeordnet ist, daß die Zuführung von Zerkleinerungsgut (P) im wesentlichen in einer Verikalebene erfolgt, welche durch die Längsachse (A) des Zerkleinerers gelegt ist.
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Schacht (6) bzw. die Doppelwandung sich über die gesamte axiale Länge der Zerkleinerungsvorrichtung erstreckt.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Schacht (6) bzw. die Doppelwandung eine demontierbare Einheit bildet und an Verbindungsstellen (15, 17) mit dem Ende des Zerkleinerungsbereiches (8) und dem Verteiler (1) verbunden ist.
11. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Verteiler (1) eine Densimeter-Trenneinrichtung (19, 22) enthält, die so ausgebildet ist, daß die den auf den Zerkleinerer gerichteten Fluß des Zerkleinerungsgutes (P) seitlich ablenkt und die schwereren Teilchen sammelt, die eine geringere seitliche Ablenkung erfahren als die leichteren Teilchen.
EP19850401874 1984-10-04 1985-09-25 Vorrichtung zum Zerkleinern von Produkten, insbesondere von Futtermitteln Expired EP0177412B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8415230 1984-10-04
FR8415230A FR2571275A1 (fr) 1984-10-04 1984-10-04 Dispositif de broyage de produits, notamment de cereales

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Publication Number Publication Date
EP0177412A1 EP0177412A1 (de) 1986-04-09
EP0177412B1 true EP0177412B1 (de) 1988-05-18

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DE (1) DE3562712D1 (de)
FR (1) FR2571275A1 (de)

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CN110404630B (zh) * 2019-07-31 2021-01-22 深圳市深传互动科技有限公司 一种生活垃圾分类回收装置

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US1397674A (en) * 1919-07-03 1921-11-22 Burnett Richard Webb End reinforcement for railroad box-cars
US1975406A (en) * 1931-08-10 1934-10-02 William F Reschke Feed mill
US2316124A (en) * 1940-08-01 1943-04-06 Louis Ruprecht Apparatus for impact pulverizing
US3929293A (en) * 1973-05-16 1975-12-30 Pennsylvania Crusher Corp Shredder crusher material reducer

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EP0177412A1 (de) 1986-04-09
DE3562712D1 (en) 1988-06-23
FR2571275A1 (fr) 1986-04-11

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