EP0993340B1 - Vibratory cone mill equipped with feeding device - Google Patents

Description

The present invention relates to a vibrating cone crusher vertical equipped with feeding device material processing installation.

Such vibrating cone mills are known, for example, from document WO-A-96/41680, in which a frame with a ring is provided vibrating against the unprotected cone.

So that a vibrating cone crusher can work correctly, it is preferable that the machine works under load, i.e. that its grinding chamber is continuously etched in materials. A care everyone must therefore be brought to the design of their food.

Currently, the most classic power system is the chute attached to the device itself. The shape and dimensions can vary by mill technology.

If these devices make it possible to force-feed the room of grinding, they have the disadvantages of generating pressure static, due in particular to the mass of materials, which affects the efficiency of the machine and limits its performance.

To overcome these drawbacks, some devices have been imagined such as, for example, those with a rotating chute.

Another device has also been developed consisting of a small hopper secured to the cone crusher, but with a flat bottom equipped with two horizontal discs.

One of the discs is fixed and secured to the vertical wall cylindrical, and has openings in the form of spiral arcs centered on the arc of the disc. The second mobile disc has the same openings but a little wider.

The displacement of this disc by a jack thus makes it possible to partially control the openings by distributing the power in the grinding chamber.

Another known device consists of a chimney opening onto a distributor plate, provided above the mill and whether or not integral with the central cone of said mill, so as to distribute the material which flows into the crushing chamber around the cone.

However, such devices have the drawback, in particular, to allow only fine particle sizes to be treated.

Furthermore, in storage hoppers or silos, it is known emptying devices with central conical equipment at the base hopper, intended to vibrate to facilitate the flow of stored materials when they tend to stick and / or form arches. The material is then refocused before leaving the hopper.

Document US-A-3,813,046 describes a supply device a non-vibrating gyratory vertical cone crusher fitted with a bell arranged in the flow path of the material to be ground to regulate the material flow.

It can therefore be seen that all of the devices mentioned above causes, when used with a cone crusher, the presence of matter at the level of the upper part of said cone thus generating efforts generating wear, energy consumption and stress important mechanical, possibly unnecessary.

The object of the invention is to propose a supply device which overcomes the aforementioned drawbacks and makes it possible to protect certain organs of the installation equipped with said device, in particular wear phenomena.

Another object of the present invention is to provide a feeding device which can be used with materials having a particle size can vary over a wide range.

Another object of the present invention is to provide a device which allows continuous feeding of the installation equipped with said device, while controlling the static pressure.

Another object of the present invention is to provide a vibrating cone crusher, equipped with a feeding device, in which wear in the upper parts, possibly not active, of the cone either diminished or removed.

Another object of the present invention is to provide a vibrating cone crusher, equipped with a feeding device, in which the mechanical stresses on the cone are greatly reduced and / or displaced.

Another object of the present invention is to provide a vibrating cone crusher, equipped with a feeding device, in which can control the static pressure inside the grinding chamber.

Other objects and advantages of the present invention will appear during the description which follows which is given only as indicative and is not intended to limit it.

According to the invention, the vibrating crusher, with vertical cone and chamber crushing plant, equipped with a feeding device, said device power supply includes an outer casing and a bell, provided less internally in said outer envelope and subject to this last, said bell being spaced apart and positioned above said cone vertical, provided oriented substantially parallel to the direction of flow of the material, so as to allow a deviation of said material for protect said cone provided downstream of said supply device, said cone vertical being free relative to said bell.

The invention also relates to a vibrating mill with vertical cone equipped with such a feeding device.

• la figure 1 décrit, selon une vue de coupe radiale schématique, un premier exemple de réalisation du dispositif d'alimentation conforme à l'invention,
• la figure 2 décrit, selon une vue de coupe radiale schématique, un second exemple de réalisation du dispositif d'alimentation conforme à l'invention,
• la figure 3 décrit, selon une coupe radiale schématique, un troisième exemple de réalisation du dispositif d'alimentation conforme à l'invention,
• la figure 4 détaille l'exemple de réalisation représenté à la figure 1 précédente,
• la figure 5 détaille l'exemple de réalisation représenté à la figure 2 précédente.

It will be better understood on reading the following description, accompanied by the attached drawings which form an integral part thereof and among which:

• FIG. 1 describes, in a schematic radial section view, a first embodiment of the supply device according to the invention,
• FIG. 2 describes, in a schematic radial section view, a second embodiment of the supply device according to the invention,
• FIG. 3 describes, in a schematic radial section, a third embodiment of the supply device according to the invention,
• FIG. 4 details the embodiment shown in previous FIG. 1,
• Figure 5 details the embodiment shown in Figure 2 above.

The present invention relates to a vibrating mill with a feeding device material processing installation. It's about of a supply device in which the flow of the material is facilitated by vibrations generated by said installation.

As shown in Figures 1 to 3, the device supply 1, according to the invention, of an installation 2 for processing material, includes an outer casing 3. The latter is located, by example, under a storage hopper 4 from which said material flows, in particular, by gravity.

Said outer casing 3 has, for example, a form of symmetry of revolution, in particular frustoconical or cylindrical. His axis of symmetry 5 is oriented, for example, substantially vertically, in particular in the extension of the longitudinal axis of said hopper 4 and / or of that of said installation 2 which are also possibly provided substantially vertical.

According to the invention, said supply device 1 comprises also a bell-shaped element 6, provided at least internally in said outer casing 3 and subject to the latter. Said bell 6 is provided oriented substantially parallel to the direction of flow of the material. It can thus be deflected, according to the arrows marked 7, 8 thus enabling the protection of organs 9 of said installation 2.

Indeed, the said organ or organs which are provided downstream, do not are, at least partially, more in contact with the material. By "planned in downstream "means, in particular, that said members 9 are located downstream of said supply device 1, under said bell 6, and / or, as shown, are capped by said bell 6.

Said bell 6 is provided, in particular, flush and / or emerging at the outlet of said outer envelope 3. It thus promotes an annular distribution of the material. Furthermore, said bell 6 has, for example, a form of symmetry of revolution, in particular cylindrical or cylindro.

According to the various exemplary embodiments illustrated, the material flow takes place vertically and the axis of symmetry 10 of said bell 6 is also provided, as appears from the explanations given higher, oriented substantially in the same direction.

Said outer casing 3 and said bell 6 are secured to each other, using wings 11, provided vertical and regularly distributed around said axis of symmetry 10 of said bell 6.

The feed device 1 according to the invention comprises thus, in particular, three said wings 11, arranged in stars and spaced each of 120 ° or four said wings 11, spaced 90 ° apart.

Said wings 11 could possibly be provided, orientable for example by pivoting each around an axis substantially horizontal. They will thus allow, in particular to regulate the flow of material, by closing more or less the passage between the bell 6 and the outer casing 3, and to moderate the static charge.

As illustrated, said outer envelope 3, said bell 6 and / or said member 9 are, for example, coaxial.

If we now refer to Figure 4, we see that, according to a first embodiment, said outer envelope 3 is piece. According to another embodiment, illustrated in Figure 5, said outer casing 3 consists of a lower element 12, called in following the chute text, and an upper element 13, opening into said chute 12.

Furthermore, as illustrated in Figures 1, 3 and 4, said bell 6 is, for example, in one piece or, as illustrated in the other figures, consisting of a dome 14 and a tubular element 15, fitting into said dome 14.

When the outer casing 3 is formed, as previously mentioned, of two independent elements 12, 13, said bell 6, when it is in one piece, and / or its dome 14, when it is not are not, in particular, subject to said superior element 13. As for audit tubular element 15, it is attached, for example, to said chute 12.

According to certain applications, it may also be envisaged to provide a bell 6 rising upstream of said envelope outside 3 and thus opening, for example, into the hopper 4.

The present invention relates to a vibrating mill 2 with vertical cone 16 and crushing chamber 17 equipped with a device supply 1 as described above.

As previously mentioned, said device 1 is provided between a storage hopper 4 and said grinder 2 and allows the supply of matter of the latter in particular under the combined effect of gravity and / or vibrations generated by said mill 2.

The bell 6 of said supply device 2 is provided, by example, above the crushing chamber 17 of said crusher 2 and thus protects organs 9 provided therein by isolating them from the less partially from the material flow.

It is, in particular, said cone 16 provided, according to the different exemplary embodiments illustrated, opening outwardly above of said crushing chamber 17. The bell 6 is then provided able to cover, at least partially, the through end 18 of said cone 16, a residual space 21 being provided between these two members.

No longer being directly surrounded by matter at the level from said end 18, said cone 16 is free in its movements, all of the less at this level, that is to say in particular, in an area where said cone 16 does not participate in fragmentation.

Wear is thus avoided. In addition, such an absence of matter and the decrease in static pressures between parts 16 and 19, obtained thanks to the insulation provided by the bell 6, greatly reduce the mechanical stresses on the cone 16, the latter then being able to vibrate, move, and / or turn with fewer constraints.

Said cone 16 and said bell 6 are, in particular, as already mentioned above planned coaxial.

Regarding said grinder 2, the latter comprises, as for example, a chassis 20 having a vibrating ring 19 provided at least partially, facing said cone 16.

Said ring 19 is vibrated, in particular, using a device of unbalanced vibration, not shown, mounted on the chassis 20 and allows thus the grinding of the material against said cone 16.

Said ring 19 and said cone 16 are, in particular, coaxial, said cone 16 possibly being free to rotate about its axis longitudinal so as to facilitate the flow of the material during grinding.

As mentioned above, according to the different examples of illustrated embodiment, the end 18 of said cone 16 is provided opening above of said ring 19.

According to a first embodiment, said bell 6 protects said upper end 18, in particular, over the entire height corresponding to said cone 16, that is to say on the part of the cone 16 is located above the upper edge of the ring 19. According to other modes embodiment, said bell 16 may also have a longer length short or longer, then entering the crushing chamber 17.

Said bell 6 thus covers, at least partially, the end opening 18 of said cone 16.

Said outer casing 3 rests, for example, on said chassis 20 at said ring 19. If said outer casing 3 is consisting, as mentioned above, of the possibility of a chute 12 and an upper element 13, said chute 12 is then subject, for example, to the frame 20 while the upper element 13 is suspended from the hopper 4.

On this subject, when using an outer envelope 3 in a single element, said outer envelope 3 is subject directly or indirectly to said grinder 2 while remaining free with respect to said hopper 4, under which it is arranged.

Such arrangements thus make it possible to dissociate the said grinder 2 and said hopper 4, thereby limiting the transfer of charges static.

It should also be noted that, in order to be able, if desired, to work when wet, the mill according to the invention may include means for injecting a fluid, such as, in particular, water, into said crushing chamber 2 from said feed device 1.

A constitution in two parts 12, 13 of said device supply 2 also facilitates such introduction and distribution of water. In water injection can be carried out at the interface between said element upper 13 and said chute 12.

According to another embodiment, it is also possible provide an injection at the bell 6 in the residual space 21. For this, said wings 11 have, for example, a thickness allowing the passage of conduits to said bell 6.

However, according to an embodiment not illustrated, it provision could also be made to subject said bell 6 to said chassis 20.

Naturally, other embodiments, within the reach of those skilled in the art could have been envisaged without going beyond the ambit of the appended claims.

Claims (10)

1. A vibrating crusher (2), with a vertical cone (16) and a crushing chamber (17), fitted with a feeding device (1), said feeding device comprising an outer envelope (3) and a bell (6), provided at least inside said outer envelope (3) and slaved to the latter by means of wings (11), said bell (6) being spaced and positioned above said vertical cone (16), arranged substantially parallel to the flow direction of matter, in order to enable deviation of said matter to protect said cone (16) laid out downstream of said feeding device (1), said vertical cone (16) being free with respect to said bell (6).
2. A crusher according to claim 1, wherein said bell (6) is provided flush and/or emerging at the outlet of said outer envelope (3).
3. A crusher according to claim 1, wherein said outer envelope (3), said bell (6) and/or said member (9) are coaxial.
4. A crusher according to claim 2, wherein said outer envelope (3) is composed of a lower element (12) and of an upper element (13) emerging in said lower element (12).
5. A crusher according to claim 4, wherein said bell (6) is composed of a dome (14), slaved to said upper element (13), extended by a tubular element (15), slaved to said lower element (12).
6. A crusher according to claim 4, wherein said bell (6) is provided as a single piece and slaved to said upper element (13).
7. A crusher according to claim 1, wherein said outer envelope (3) and said bell (6) are slaved to one another by means of wings (11), which are steerable.
8. A crusher according to claim 1, wherein said cone (16) is provided emerging externally, said bell (6) being capable of capping at least partially, the emerging end (18) of said cone (16) in order to isolate the latter from the flow of matter.
9. A crusher according to claim 1, comprising a chassis (20) exhibiting a vibrating ring (19), provided at least partially opposite said cone (16), said outer envelope (3) resting on said chassis (20) at said ring (19).
10. A crusher according to claim 1, comprising in addition means to inject a fluid into said crushing chamber (17) from said feeding device (1), said fluid injection means being provided at said bell (6).

Images