CN203577861U - Feeder equipment for feeding material to be crushed or ground into roller crusher - Google Patents

Abstract

This invention relates to a feeder device (7) for feeding material to be crushed or ground into a roll crusher (6), the roll crusher having two generally parallel rolls (8); the two rolls are configured to rotate toward each other in opposite directions and are separated by a gap. The feeder device (7) includes a main feeder (9) for feeding a first portion of the material into the gap of the roll crusher (6). The feeder device (7) is characterized in that it further includes an auxiliary feeder (10) for feeding a second portion of the material into the roll crusher (6). The auxiliary feeder (10) is configured to feed the second portion of the material into the at least one roll (8) at a speed adjustable relative to the surface velocity of the at least one roll (8). This invention enables a self-generating protective layer to be quickly and firmly established on the roll crusher.

Description

Feeder equipment that feeds material to be crushed or ground to a roll crusher

technical field

The utility model relates to a feeder device for supplying materials to be crushed or ground to a roller crusher.

Background technique

When crushing or grinding rock, ore, cement clinker, and other hard materials, a roll crusher is used, which has two generally parallel rolls that rotate in opposite Gap separated. The material to be crushed is fed or choke-fed into this gap by gravity. One type of roller crusher is known as a high pressure grinding roller or high pressure roller crusher. This type of roll crusher uses a crushing technique known as interparticle crushing. Among them, the material to be crushed or pulverized is crushed not only by the crushing surface of the roller, but also by the particles in the material to be crushed, so it is called "inter-particle crushing".

An example of a high pressure grinding roller is described in patent document EP-516952. This type of high pressure grinding roll uses autogenous protection, ie the layer of material to be crushed is held on the surface of the roll. Thus, the material to be crushed will not grind only on the surface of the roll, but mainly on the autogenous protective layer.

A common problem associated with high-pressure grinding rolls is the difficulty of quickly and firmly building up an autogenous protective layer. Material of proper composition must be fed into the nip of the high pressure grinding roll, otherwise the material will not adhere properly to the outer surface of the roll, thereby increasing the wear on the actual surface of the roll.

Utility model content

An object of the present utility model is to provide an improved solution to the above technology and the prior art. More specifically, an object of the present invention is to provide a feeder device for feeding material to be crushed or ground to a roller crusher, allowing a self-generating protective layer to be quickly and firmly established on the roller crusher.

These and other objects and advantages will become apparent from the following description of the invention and are achieved by means of a feeder device according to the invention.

The utility model provides a feeder device for feeding material to be crushed or ground to a roller crusher having two rollers; the two rollers are arranged towards each other in opposite directions Rotate and are separated by gaps. The feeder arrangement may comprise a main feeder for feeding the first portion of the material into the nip of the roll crusher. The feeder arrangement may further comprise an auxiliary feeder for feeding the second portion of the material to the roll crusher.

In said feeder arrangement, said auxiliary feeder may be arranged to feed said second portion of material to said at least one roller.

In the feeder device, the two rollers may be arranged substantially parallel.

In the feeder arrangement, the auxiliary feeder may be arranged to feed the second portion of the material to the at least one roller substantially tangentially to the outer surface of the at least one roller.

In the feeder arrangement, the auxiliary feeder may comprise at least one belt conveyor.

In the feeder arrangement, the auxiliary feeder may comprise two belt conveyors each arranged to feed the second portion of the material to the roller crusher each roll.

In said feeder device, said feeder device may further comprise: a recirculation device arranged to collect a recirculated portion of material that has been crushed or ground by said roll crusher, and to The recycled portion is delivered to the auxiliary feeder.

In said feeder apparatus, said second portion of material may comprise virgin material, recycled screen material, binder, or a mixture of virgin material, recycled screen material and binder .

In the feeder arrangement, the feeder arrangement may further comprise adjustment means for adjusting the second portion of material.

In the feeder device, the adjustment means may include water supply means.

In the feeder arrangement, the main feeder may be arranged to slug feed a first portion of the material into the gap of the roll crusher.

In particular, the invention provides a feeder device for feeding material to be crushed or ground to a roller crusher. The roll crusher has two generally parallel rolls; the two rolls are arranged to rotate in opposite directions towards each other and are separated by a gap. The feeder arrangement comprises a main feeder for feeding a first portion of said material into the nip of the roller crusher. The feeder arrangement is characterized in that it further comprises an auxiliary feeder for feeding said second portion of material to the roll crusher. The auxiliary feeder is arranged to feed said second portion of material to at least one of said rollers at an adjustable speed relative to the surface speed of said at least one roller. Advantageously, an autogenous protective layer can be quickly and firmly built up on the outer surface of the rolls of the roll crusher. Often, material fed into the nip of a roll crusher will have problems adhering properly to the outer surfaces of the rolls. This depends on various factors, for example, the material is being fed at an unsuitable speed, in an unsuitable direction, or the material has an unsuitable composition. However, when material is fed to the rollers of the roller crusher by means of the auxiliary feeder in addition to the material fed into the gap of the roller crusher by means of the main feeder, it is possible to determine the velocity of the second part of the material, Composition and orientation, so as to quickly and firmly achieve the desired autogenous protection of the roll. In a preferred embodiment of the invention, the auxiliary feeder is arranged to feed said second portion of material to said at least one roller at a speed substantially corresponding to the surface speed of said at least one roller.

The auxiliary feeder may be arranged to feed the second portion of said material to said at least one roller substantially tangentially to the outer surface of said at least one roller, which is beneficial in that it will further facilitate the provision of self-protection.

The auxiliary feeder may comprise at least one belt conveyor, and preferably two belt conveyors, each belt conveyor being arranged to feed the second portion of the material to each roller of the roller crusher . The advantage of this solution is that both rolls of the roll crusher can be provided with the same autogenous protection in a controlled and simple manner. Naturally, the autogenous protection of the two rollers can be varied, if desired, by operating the two belt conveyors at different speeds or directions, and by using feed materials of different composition. The auxiliary feeder may alternatively comprise at least one screw conveyor.

The second portion of material may comprise virgin material, recycled screen material, binder, any other suitable material, or a mixture of the foregoing. Thus, the material composition can be altered to obtain the best result in the existing environment.

The feeding arrangement may also comprise recirculation means; the recirculation means being arranged to collect a recirculation portion of material which has been crushed or ground by said roller crusher, and to convey said recirculation portion to said auxiliary feeder. The advantage of this solution is that the feeding device will thus be fully automated. Manual operations will no longer be required to provide the auxiliary feeder with material to be fed to the rolls.

The feeding device may also comprise adjustment means for adjusting said second portion of material, said adjustment means may comprise water supply means. The benefit of this solution is that the composition of the material can be easily controlled.

The main feeder may be arranged to slug feed a first portion of said material into the nip of the roller crusher, with the advantage that an improved crushing performance can be achieved.

According to a second aspect of the invention, the invention relates to a method of feeding material to be crushed or ground to a roller crusher. The roller crusher has two substantially parallel rollers; the two rollers are arranged to rotate in opposite directions towards each other and are separated by a gap, wherein the first part of the material is fed by means of a main feeder to the gap of the roller crusher. The method is characterized in that said second portion of material is fed to said at least one roll of a roll crusher by means of an auxiliary feeder at an adjustable speed relative to the surface speed of said at least one roll.

The second portion of material may be fed to the at least one roller substantially tangential to the outer surface of the at least one roller.

The method may further comprise recirculating material that has been crushed or ground by said roller crusher by collecting a recirculated portion of crushed material and conveying said recirculated portion to said auxiliary feeder.

The method may also include conditioning the second portion of material before the second portion of material is fed to the at least one roller, the conditioning may include supplying water to the second portion of material.

A first portion of said material may be slugged fed to the gap of the roller crusher by means of a main feeder.

Basically, unless explicitly defined otherwise herein, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field. Unless expressly stated otherwise, all references to "a/an/the/said (element, means, part, device, etc.)" shall be construed open-ended as referring to said element, means, part, device, etc. At least one instance of etc. Also, throughout this application, the term "comprising" means "including but not limited to".

Description of drawings

With reference to the accompanying drawings, the above-mentioned and additional purposes, features and advantages of the present invention will be better understood through the following exemplary and non-limiting detailed description of preferred embodiments of the present invention; in the accompanying drawings, the same The reference numerals will be used for like elements, where:

Figure 1 is a perspective view of a roll crusher without feeding equipment; and

FIG. 2 is a perspective view of a roll crusher with a feeder arrangement according to an exemplary embodiment of the present invention.

Detailed ways

Figure 1 shows a conventional roll crusher 1 without feeding equipment. The roller crusher 1 has two crushing rollers 2 which are parallel to each other and rotate towards each other in opposite directions. The crushing rollers 2 each have a shaft 3 with ends 4 mounted in respective roller bearings 5 . The roller crusher 1 has a feed device for feeding material to be crushed to the crushing region of the roller crusher 1 . The material is conveyed out of the roller crusher 1 after it has been crushed in the crushing zone.

In Fig. 2, a roll crusher 6 is shown with a feeder arrangement 7 according to an embodiment of the invention. The feeder arrangement 7 is adapted to feed material to be crushed or ground to the roller crusher 6 . The roll crusher 6 has two substantially parallel rolls 8; the rolls 8 are arranged to rotate in opposite directions towards each other and are separated by a gap. The feeder arrangement 7 comprises: a main feeder 9 for feeding a first part of the material to the gap of the roller crusher 6; and two auxiliary feeders 10 for feeding a second part of the material to the rollers Crusher 6. The auxiliary feeder 10 feeds the second portion of material to the two rollers 8 at a speed adjustable relative to the surface speed of the two rollers 8 . Each of these auxiliary feeders 10 comprises a belt conveyor arranged to feed the second portion of material to the roller 8 substantially tangentially to the outer surface of the roller 8 . The feeder arrangement has two recirculation devices 11; one recirculation device corresponds to each roller 8 and is arranged to collect the recirculated part of the material which has been crushed or ground by said roller crusher 6 and to The recycled portion is sent to the auxiliary feeder 10 . Thus, the second portion of material fed to the roll 8 may be virgin material, recycled screened material, binder, any other suitable material, or a mixture of the above materials. The feeder device 7 has four adjustment devices 12 for adjusting the second portion of material. The adjustment device 12 consists only of a water supply device. Naturally, other types of conditioning means 12 can also be used for the feeder device, eg for heating, cooling or mixing the second portion of material, or adding chemical conditioning agents to the second portion of material.

During the crushing operation of the roller crusher 6 a first portion of the material to be crushed is conveyed by means of the main feeder 9 of the feeder arrangement 7 and introduced into the hopper of the roller crusher 6 . The material then travels from this hopper to the crushing area by gravity. When the material has been crushed by means of the two parallel and rotating crushing rollers 8, the material travels by gravity outside the crushing area to be transported from the plant. Simultaneously, a second portion of the material conveyed by the two auxiliary feeders 10 is led directly onto the rotating crushing roller 8 . The second portion of material is generally finer grained than the first portion of material and is fed to the roller 8 at an adjustable speed relative to the surface speed of the roller 8 . By adjusting the feeding speed of the auxiliary feeder 10, some characteristics of the autogenous protective layers of the roll 8, such as the thickness of these protective layers, can be controlled to a certain extent. When material is fed to the rollers 8 of the roller crusher 6 by means of the auxiliary feeder 10 in addition to the material fed into the gap of the roller crusher 6 by means of the main feeder 9, the velocity, composition and Both directions can be determined in order to achieve the desired self-generating protection of the roller 8 . Thereafter, the recirculation device collects the recirculation part of the material that has been crushed or ground by said roller crusher 6 and conveys the recirculation part back to the auxiliary feeder 10 .

According to a second aspect of the invention, a method of feeding material to be crushed or ground to a roller crusher 6 is provided. The roll crusher 6 has two substantially parallel rolls 8; the two rolls are arranged to rotate in opposite directions towards each other and are separated by a gap, wherein the first portion of the material is fed by means of a main feeder 9 It is supplied to the gap of the roller crusher 6. The method is characterized in that said second portion of material is fed to at least one roller 8 of a roller crusher 6 by means of an auxiliary feeder 10 at an adjustable speed relative to the surface speed of said at least one roller 8 .

The invention has been mainly described above with reference to a number of embodiments. However, as is readily appreciated by a person skilled in the art, other embodiments than the ones disclosed above are equally possible within the scope of the invention as defined by the appended claims.

For example, the number and type of primary and secondary feeders can be varied. For example, the feeder can be a belt conveyor, a screw conveyor, or feed by gravity.

The recirculation device can be varied in different ways and can be of any suitable type. The same changes can also be applied to the adjustment device and the number of adjustment devices.

By "fresh material" is meant material that has not yet passed through the gap between the rolls of the roll crusher. The fresh material fed to the rolls of the roll crusher by means of the auxiliary feeder may comprise adhesive or any other suitable material in order to obtain the desired autogenous protective layer on the rolls.

Claims (11)

1. one kind is supplied to material to be broken or that grind the dispenser equipment (7) of kibbler roll (6), and described kibbler roll (6) has two rollers (8); Described two rollers are configured to rotate toward each other along contrary direction, and are opened by separated; Described dispenser equipment (7) comprising: main dispenser (9), for the Part I of described material being supplied to the gap of described kibbler roll (6), it is characterized in that, described dispenser equipment (7) also comprises: auxiliary dispenser (10), and for the Part II of described material being supplied to described kibbler roll (6).

2. dispenser equipment according to claim 1 (7), it is characterized in that, described auxiliary dispenser (10) is configured to the adjustable speed of superficial velocity with at least one roller with respect in described roller (8), and the Part II of described material is supplied to described at least one roller (8).

3. dispenser equipment according to claim 1 (7), is characterized in that, it is substantially parallel that described two rollers are set to be.

4. dispenser equipment according to claim 1 (7), is characterized in that, described auxiliary dispenser (10) is configured to tangential along the outer surface of described at least one roller (8), and the Part II of described material is supplied to described at least one roller (8).

5. according to the dispenser equipment (7) described in any one in claim 1 to 4, it is characterized in that, described auxiliary dispenser (10) comprises at least one ribbon conveyer.

6. dispenser equipment according to claim 5 (7), it is characterized in that, described auxiliary dispenser (10) comprises two ribbon conveyers, and each ribbon conveyer is configured to the Part II of described material to be supplied to each roller of described kibbler roll (6).

7. according to the dispenser equipment (7) described in any one in claim 1 to 4, it is characterized in that, described dispenser equipment (7) also comprises: EGR (11), be configured to collect recycle sections broken by described kibbler roll (6) or material that grind, and described recycle sections is transported to described auxiliary dispenser (10).

8. according to the dispenser equipment (7) described in any one in claim 1 to 4, it is characterized in that, the Part II of described material comprises screening materials, the adhesive of new material, recirculation, or new material, the screening materials of recirculation and the mixture of adhesive.

9. according to the dispenser equipment (7) described in any one in claim 1 to 4, it is characterized in that, described dispenser equipment (7) also comprises: adjusting device (12), and for adjusting the Part II of described material.

10. dispenser equipment according to claim 9 (7), is characterized in that, described adjusting device (12) comprises water supply installation.

11. according to the dispenser equipment (7) described in any one in claim 1 to 4, it is characterized in that, described main dispenser (9) is configured to the Part I of described material to block and be supplied to the gap of described kibbler roll (6).

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