KR19990044377A - 1-rotor sorting roll mill with air separator and such sorter - Google Patents

Abstract

Two preferred solutions relate to a method of changing the cutting point of the sorter in the sorter ball mill while keeping the rotation speed of the sorter wheels 1a, 4, 6, 7 constant during the operating step. According to one of these solutions the fine material outlet is realized as an adjustable diaphragm and according to the other solution the height of the sorting chamber is freely adjusted.

Description

1-rotor sorting roll mill with air separator and such sorter

At the end of the milling process, the milling material generally needs to be classified or sorted due to its various particle sizes. Thus, roll mills and sorters are usually integrated into one functional unit. The raw material is put into a roll mill, and when the milling process is finished, the milling material from which the shipbuilding material is separated arrives at the sorting machine, where the parts of the milling material having thick and thin particles (large and small mass) are separated from each other. do.

Roll mills and sorters, when structurally independent of one another, are subject to a variety of working environments that can be suddenly taken into account or created suddenly.

If the air separator is a problem in the sorter, the practical criterion for the sorter is the degree of separation (separation limit) d _T.

here,

d _T is the degree of separation (separation limit) or particle size

ρ is the thickness (kg / m ³ )

V _r is the radial velocity of the sorting wheel (m / s)

V _u is the circumferential speed of the selector wheel (m / s)

r is the radius (m)

η is the dynamic viscosity (Ns / m ² )

to be.

Thus, the degree of separation of the sorter depends, among other things, on the two speed components, which in turn means that if the sorter's working range is small and the sorter operation is uneconomical, then the number of revolutions of the sorting wheel should be changed. will be.

The same is true for the roll mill. In the case of beater roll mills with a slap tool around a rotating disc, this roll mill must be able to change the number of revolutions of the disc in order to operate economically.

In installing a beater roll mill and an air separator, one important aspect is that there is no close relationship between the number of revolutions of the roll mill and the sorter. The number of revolutions of the sorter and roll mill should be able to be determined and changed independently of each other. This means that there is no problem when the sorting machine and the roll mill are independent equipments having independent driving devices.

If roll mills and sorters are not only functional, but must also be structurally connected to one another in order to reduce construction costs or simply reduce the place required for installation, problems arise in the above situations. In such a case, one common drive motor is provided for the two machines, a motor for one side and a motor for the branch between the roll mill and the sorter on the other side, and the motor for the other. It is evident that the device, the roll mill and the other side must be equipped with a single speed controller each between the performance branch motor and the separator. But this makes the whole machine too expensive, with roll mills and sorters, to offset another advantage of structural integration. Therefore, even though the roll mill and the sorter were assembled together, in practice, separate drive units and different speed controllers were still installed in the sorter and the roll mill.

Figure 1 shows a sorting roll mill with one rotor in an intermediate longitudinal section, in which one of the two upper plates of the sorter is made as an adjustable aperture suitable for the invention, and one of the two upper plates and the upper side of the rectifier outlet The plate points to such an aperture;

FIG. 1A is a detail view based on FIG. 1;

FIG. 2 shows the sorting roll mill in the same representation, where the only upper plate of the sorting machine can be adjusted high in order to be able to change the internal height of the sorting chamber through the adjustment of the upper plate.

The present invention is based on the intention to solve this problem in a purposeful way. Therefore, the object of the present invention, starting from what is called a sorting roll mill, can be integrated into one unit of equipment having one beater roll mill and one sorter with one drive, but at a reasonable cost It is intended to suggest the possibility that the and selectors can be controlled independently of each other. The starting point for solving this task should be the mathematical relationship cited above.

Starting from the problem of the sorting roll mill described above, the problem on which the present invention is based can be generally defined as follows.

The degree of separation as a practical evaluation criterion of the air separator actually depends on the number of revolutions of the sorter wheel. Therefore, in order to economically install the air separator, it is a prerequisite that the number of revolutions of the separator wheel must be adjustable. However, it can be imagined that it is not so simple to determine the number of revolutions of the sorter wheel so that the desired degree of separation is reached in an appropriate manner. Accordingly, the object of the present invention is to realize an air sorter which can change the degree of separation by selectively or additionally changing the degree of separation, and can achieve a suitable degree of separation. In this context, "degree of separation" has the same meaning as "delimiting the separation limit", that is, to some extent shipbuilding materials are rejected under the influence of the centrifugal force of the selector wheel, and At the same time, it means whether to leave the sorter wheel through the center line of re-discharge and against the action of centrifugal force. Again, the mathematical relationship cited above should be the starting point.

The solution of this problem is obtained from the present patent claim, which relates only to an air separator for a more general part, but to a sorting roll mill for a more specific part.

For practical conversion, the present invention arrives at two solutions, both based on the mathematical relationship cited above. One solution is to adjust the internal height of the sorting chamber of the air sorter, and another solution is to create an aperture to control the sorter outlet of the sorter. As can be seen from the description of the two implementation manners indicated in each of the two figures of the figures described below, two possible solutions can be realized with relatively low assembly costs in accordance with the present invention. In both cases, the roll mill and the sorter start at one unit, where the motor drive can be changed to take into account the number of revolutions of the roll mill required and the sorter is driven at this speed as well, The environment can be changed independently from the roll mill. The explanation also allows the expert to know that if only the air selector is the problem, the degree of separation should be able to be changed despite a constant number of revolutions.

In Fig. 1 of the sorting roll mill with one rotor, the rotor 1 is clearly shown, which is firmly connected to one disc 2a having a beater 2 attached to its outer periphery. It comprises one of the upper plate (1a) of the sorting machine attached to the sorting blade (4). The beaters work in cooperation with the material path (3) inside the case of the equipment. The milling material, which is finely pulverized by the cooperation between the beater (2) on one side and the powder passage (3) on the other side, radially from the outside with the sorting air (4), the upper plate (1a), and the second, on the outlet side The sorter is reached through the path between the upper plates 7 of the sorter, which is sorted by coarse and thin material. Fine material, i.e. a relatively small mass of flour product, is sorted through the sorting wheel from the sorting space outwardly and radially inwards according to the centrifugal force, ie between the sorting blade 4 and the upper plates 1a, 7 Pulled out through the blade path of the wheel, through the central straight line outlet 6 enclosed by the second upper plate 7, out of the sorting roll mill, and separating into a material and sorting space in one filter. Most of them are treated. Shipbuilding materials, i.e., relatively large mass products, are rejected under the influence of centrifugal forces on the sorting wheel and again reach the influence zones of the beater 2 and the powder passage 3, whereby particles are produced with a relatively small mass. It is returned several times until discharged out of the sorting roll mill in the manner already described.

Other substantial components of the sorting roll mill include leading blades (8), a case (13) with a case outlet closed during operation through the door (9), a compressed air product inlet (10), and a sorting space inlet. 11, and the drive motor 12.

When the door 9 is closed and rotation starts in the case 13 of the sorting roll mill where the rotor 1 is stopped by the motor 12, the discharged product is transferred to the beater 2 through the product inlet 10. Entering the working zone of, the discharged product is ground into coarse and fine materials, and the coarse and fine materials are treated in the manner previously described.

The hypothesized beater roll mill is completely customary in structure and manner of operation and therefore need not be discussed in greater detail here.

The operation method of the beater related to a product is based on the rotation speed of the disc 2a and the roll mill part with a beater attached to it. This rotational speed varies with the rotational speed of the motor 12, and thus the rotational speed of the roll mill is changed by the rotational speed of the rolling mill itself or when the rotational speed of the motor is constant. Can be converted. Depending on the number of revolutions of the roll mill, the number of revolutions of the sorting wheel can also be determined by the upper plate 1a, the sorting blade 4, and the upper plate 7 which are directly connected to the original plate 2a. . Despite these dependencies, in order to be able to change the degree of separation of the sorter, the upper plate 7 is shaped like an iris aperture well known per se. By adjusting the aperture, the outlet cross section 6 can be adjusted, which is independent of the prescribed or selected roll milling revolutions to ensure proper operation of the roll mill, the formula cited at the outset. In consideration of this, it is one of the preferred means for determining the circumferential speed of the wire in order to enable proper separation of the roll mill.

The basic structure of the sorting roll mill and the operation manner as the roll mill and the sorter are shown in FIG. 2. The roll mill is substantially made of a rotor 1 with a milling disc 2a and a beater 2 attached thereto, where the sorter or sorting wheel is actually a bottom 15, a cylinder wall 16, an outlet. It features a telescopically adjustable cylinder 14 with a side, adjustable upper plate 17 and a selective blade 4. One portion 14a of the cylinder 14 having the bottom 15 connected to the disc 2a and the inner cylinder wall piece 16a has a blade 4 of the sorting blade tube at the free end of the cylinder wall piece 16a. Has The other part 14b of the cylinder with the upper plate 17 and the outer cylinder wall piece 16b passes through the inner cylinder wall piece 16a so that it can be adjusted telescopically in the direction of the double arrow 19 without intermediate steps. The upper cylinder plate 17 of the case wall 13, which is in engagement with the free end of the outer cylinder wall piece 16b and has a regular wire discharge outlet 6 disposed at the sorting wheel in the center, is free, that is, the outer cylinder wall piece Between the portions covered with (16b) or the fragments of the blade 4, it is in contact with the sorting chamber 20 together with the upper plate 17. By adjusting the upper plate 17 as part of the other portion 14b of the cylinder 14, the internal height H of the sorting chamber 20 can be changed. The blades 4 should sneak into the upper plate 17 through the gaps as smoothly as possible without interfering with the adjustment movement of the upper plate 17 and between the portions 16a and 16b there will be no wear and tear. There is a gasket. The 16a and 16b sections thus form a ring stopper that surrounds the blade, with two ring stops that can be telescoped and adjusted to each other.

In the operation method of the sorting machine according to FIG. 1, the free cross section of the selection line exit 6 may be changed through the adjustment of the iris aperture, and thus the speed of the total flow may be changed, whereas in the operation method according to FIG. The cross section of the jeongseonjae exit 6 surrounded by the wall 13 is constant, but the upper plate 17 can be adjusted in the direction of the axis, the internal height of the air separator can be changed, and thus the speed of radial total flow can be changed In other words, the operation of the roll mill and the operation of the sorter can be functionally matched with each other, but can be optimized without any restrictions on constructive dependencies.

There is one wheel cylinder 21 on the upper plate 17 of the cylinder portion 14b, and the cylinder portion 14b is attached to the mandrel 22 so as not to rotate. The cylinder portion 14b can be telescopically adjusted and thus the upper plate 17 can also be telescopically adjusted, so that the two mandrel are connected to each other by a wedge groove connection 24 which is well known per se. This is because the mandrel 22 is connected to the starting mandrel 23 of the motor 12 so that the mandrel 22 cannot rotate, and the starting mandrel 23 can be pushed in the axial direction while facing each other. One of the two mandrel is a hollow mandrel, which is formed in a longitudinal groove in the inner wall or a longitudinal rib on the inner wall, and the other of the two mandrel is a hollow mandrel, which is formed in a corresponding longitudinal wedge on the outer wall or in a vertical groove in the outer wall. Opposing the motor-driven mandrel in the form of a hollow mandrel, the mandrel made in the form of a full mandrel can be pushed in the axial direction and indicated by double arrows. The motor drive mandrel may be a mandrel coming directly out of the motor 12, and may be driven by the motor drive mandrel via an electric drive, or other suitable and known means, for example, by a belt belt drive. Can be connected with the mandrel coming out. 25 is the flow guide between two mandrel 22 and 23 in its smooth piece.

The driving force of the motor 12 is in this case once via the motor starting mandrel 23 to the rotor 1, to the ring iris 14 made of a cylinder or to it, to the sorting wheel blade 4 and to the upper plate 17. ), And once through the mandrel 22 directly to the upper plate (17). However, it is also possible that the mandrel 22 is driven via the upper plate 17 driven by the mandrel 23 by giving up the wedge groove 24 for another flow guide (according to 25). Is the connection between the wheel barrel 21 and the mandrel 22 not to rotate, the wedge groove connection 24 for another guide bearing (protrusion 25 according to the flow guide), and the wheel barrel 21 and the mandrel ( If the impossibility of rotation of the connections between the two ends, the mandrel can only be adjusted in the axial direction, in this case only when the mandrel 22 is pushed in the axial direction, the mandrel ( Only care must be taken to bring 22 with the Senate.

The similarities in the way they work are repeated in the same way, so that detailed explanations can be given up.

As for the iris aperture of the upper plate 7 in the work according to FIG. 1, it is a well-known construction model in itself, but it is shown graphically in part FIG. 1A, which is at a larger scale and apart from the sorter. It is seen from the direction of sorting space flow on which Jeong Seon-jae is loaded Of utmost importance is the aperture with the cross section of the changing hole, the cross section of the hole 100 being approximately 6 to about 30 crescent shaped thin metal plates 101 whose inner ends 102 are around the hole and at the other end are Stepless and adjustable control ring 103 is arranged in the original upper plate (7) to be rotated in the direction of the double arrow (104). By turning the adjusting ring 103 in the upper plate 7 in one or the other direction in the direction of the double arrow 101, the turning direction of the thin metal plates can be changed, so that the cross section of the hole 100 becomes larger or smaller and the fine line discharge outlet ( Change corresponding to the cross section of 6). The adjusting ring 103 can be simply rotated manually by an existing method from the outside, such as a servo motor or a lever.

In the two figures (Figs. 1 and 2) the leading ring is marked 5, which works with the leading blade (8). The sorting air entering through the sorting air inlet (11) enters the leading blade ring (8) in the annular space between the leading ring (5) and the case wall, and there between the leading ring (5) and the sorting wheel in the corresponding countercurrent. In the direction of change, with the sorting material introduced into the sorting material inlet 10 from the outside into the flow chart tube to reach between the blades of the sorting wheel, where the separation of the Jeongseonjae and shipbuilding materials takes place. The sorting air, including the straight wire, leaves the sorting machine and passes to the outlet (6), and the shipbuilding material is rejected by centrifugal force in the inlet area of the flow tube between the blades of the sorting wheel, and again the ring between the leading ring (5) and the sorting wheel. It is sent through the space to the working area of the roll mill.

In the work performance method according to FIG. 1, the upper plate 7 including the diaphragm was attached to the sorter wheel and disposed on the upper part. It is pointed out here that this upper plate 7 with adjustable aperture can be removed from the sorter wheel and attached to the case 13, in particular to the lid. This solution may be useful because the diaphragm 7 with the aperture can be heavier than the simpler one and no additional driving energy is required if the senate plate is detached from the separator wheel and attached to the case. .

In summary, the present invention can be briefly defined as providing two preferred solutions to the problem of changing the separation limit of the sorter during operation with constant rotation of the sorter wheel in the air sorter.

Claims (17)

There is one flat cylindrical sorter wheel with at least one upper plate and blades for the purpose of limiting radial blade conduits perforated against the centrifugal force from the outside into the ship by means of sorting air, in order to separate the shipbuilding material from the selected ship material. In the air sorter where the outlet for the sorting air filled with thinner material is concentrated in the sorting wheel and the sorting is driven through at least one upper plate, the sorting wheels 1a, 4, 6, 7 to 4, 14, 17) when the number of revolutions is constant, the flow chart transverse cross-section of the sorting wheel can be forcibly and continuously changed, even though the number of revolutions of the sorting wheel is constant, it is characterized in that the sorter separation degree can be changed. Air sorter. 2. The air sorter according to claim 1, characterized in that the cross section of the selection re-exit (6) can be changed without intermediate steps in one upper plate (7) of the sorter wheel (1a, 4, 6, 7). 3. The upper plate 1a of the two upper plates 1a, 7 of the sorting wheels 1a, 4, 6, 7 is driven and the other upper plate 7 can be changed continuously. Air sorter characterized in that it has a selection line exit (6). 4. Air sorter according to claim 3, characterized in that the line selector outlet (6) is a stop (100-103) in which the cross section (100) of the hole can be adjusted without intermediate steps. 5. The air separator according to claim 4, wherein the aperture for adjusting the cross sectional hole is an iris aperture (100-103) that can be adjusted from the outside. Air separator according to claim 1, characterized in that the total cross section of the flow chart tube between the blades (4, 14, 17) of the sorting wheel (4) can be changed without intermediate steps. 7. The internal height H of the sorting wheels 4, 14 and 17 can be adjusted without intermediate steps, so that the part of the flow chart tube flowing through the sorting air can be changed without intermediate steps. Air sorter. 8. The height adjustment plate (17) according to claim 7, wherein the height adjustment can be made through a rod (22), which can push axially from the outside, which rod can be pushed in to push the sorting wheel (4, 14, 17). And an air separator connected to each other so as not to be pushed in the axial direction. 9. The rod according to claim 8, wherein the rod is a mandrel 22 which is driven by one of the drive motors 12 of the sorting wheels 4, 14 and 17, which mandrel does not rotate with the upper plate 17 of the sorting wheel. Air sorter characterized in that it is connected so as not to push. 10. The mandrel 22 according to claim 9, wherein the mandrel 22 is connected to the motor drive mandrel 23 so as not to rotate via the wedge groove 24 but to be able to push in the axial direction, which is made as a hollow mandrel and is therein. Air sorter characterized in that the mandrel connected to the upper plate 17 of the sorting wheel (4, 14, 17) is located. The outer side plate 17 and the blade tube 4 of the sorting wheel 4, 14, 17 which can be adjusted in the direction of the rotational axis of the sorting wheel. Connected to the cylinder diaphragm 14, and the open part of the flow chart tube is open to the sorting air supply pipe 11 from the outside and open toward the line selector outlet 6 inside, the upper plate 17, the blade 4, and the diaphragm. Air sorter, characterized in that (14) is arranged with each other. 12. Air sorter according to one of the claims 7 to 11, characterized in that the rotation of the sorting wheel (4, 11, 17) is introduced into the sorter wheel via the blade (4). 13. The cylinder stop (14) according to claim 11 or 12, wherein the cylinder stop (14) is made up of two parts, each of the two stoppers (14a, 14b) that can be adjusted to each other in a telescopic manner is just shaped, thus close to driving. Points to the bottom 15 and the inner cylinder wall piece 16a on which the partial iris 14a is driven, which is submerged in the outer cylinder wall piece 16b of the partial iris 14b on the outlet side, Partial aperture (14b) on the outlet side is characterized in that connected to the upper plate (17) of the adjustable sorting wheel (4, 14, 17) on the flow side. 14. The sorting wheel blade (4) according to any one of claims 11 to 13, wherein the sorting wheel blade (4) can slide but penetrate fluidly and tightly through the radial gap into the upper plate (17) on the outlet side and with the partial iris (14a) on the drive side. Air sorter, characterized in that connected to the inside of the partial iris 14b on the outlet side. 15. Air sorter according to any one of claims 11 to 14, characterized in that the cylinder wall pieces (16a, 16b) of both subaperes (14a, 14b) are fluidly in close contact but adjustable to each other. 11. An axially pushable mandrel 22 protrudes from the mandrel for a hollow mandrel 23 behind the driven disc on the drive side and is secured to the case via a suitable bearing. Air sorter characterized in that connected to the control lever. 17. The rotor (1) according to any one of claims 11 to 16, wherein the air separator is part of the sorting roll mill, in which the rotor (1) driven by the drive (12) in this roll mill is the beater (2) of the roll mill. And the driven portion 14a of the ring stop 14a of the sorting wheel, which is driven by the support post 2a of the sorting wheel, and the rotor is adjustable to meet the evaluation criteria of the roll mill. Air sorter characterized in that.