DE1461453C - - Google Patents

Description

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The invention relates to a separator for 15 ° to the horizontal plane including a forehead solids from a suspension consisting of a wall at the entrance of the screen cylinder from a ring screen cylinder, whose main axis is closed to the horizontal disk and the inlet connection, however The plane runs inclined, the other end face arranged in the screen cylinder is open at the exit and except for screw flights to transport the separated 5 half of the entire screen cylinder at least one solids is arranged to be higher than the entrance spray tube.

the exit and a screen cylinder surround an advantage of the device according to the invention

the housing with the filtrate drainage nozzle. is that the separation of the solids from the

In a known device of this type, suspensions are going on without the application of pressure,

the screw flights designed as a conveyor screw, io The contents of the screen cylinder are not combined

which rotates inside the screen cylinder and the quantity pressed, but rather constantly loosened,

Suspension under pressure on the inner walls of the because the solids in the rotation of the sieve cylinder

Sieve cylinder moved along. One major drawback to be taken up with is it by itself

this device consists in making the application fall back down. Already because of this

There is hardly any risk of conveyance loosened by pressure leading to very rapid pollution

and inoperability of the screen cylinder leads to clogging of the screen cylinder. Apart from that

since the solids settle in the pores and it is ensured according to the invention that

clog them. This is also due to the fact that there are firmly adhering residues of the impurities in the

that the solids on the inner wall of the Siebzylin- removed the upper area of the cylinder diameter

be pushed along. The danger of being like that. The spray tube is provided for this purpose

Such inoperability is then particularly the solids in the lower area of the Siebzylin-

great when the suspension backwashes with very inhomogeneous ders. The spray tube can be adjusted

Is contaminated with solids, as it may be arranged, for example, in order to also with different loading

Industrial wastewater can be the case. To get the best effect on the prevention conditions,

In the case of the known 25 die in the device at the lower end, the pollution control is central

Device no possibility of cleaning the introduced suspension with the contained therein

clogged sieve cylinder provided. In the rest of the solid impurities migrates under looser

the known "device also brings up the promotion of the inclined screen cylinder and

The disadvantage with it that the constant friction is delayed due to the inclination and

retained between the screen cylinder and the screw flights 30, that an increased thickening effect

a high level of wear associated with considerable occurrences. The degree of inclination depends largely on

Energy expenditure, occurs. the type of suspension. With high solids content,

The same disadvantages are also shown by another one in which it is relatively easy to separate from known devices, which also work under pressure, can be arranged to increase the penetration, in which a drum with internal sets work with a relatively low inclination In contrast, screw thread segments are used to rotate when the fixed screen cylinder increases. In addition, the substance content and the correspondingly poorer separation are added here, so that the suspension under the operating conditions has increasingly larger angles of inclination,
The force of gravity only affects a partial area which rests on the outer wall of the screen cylinder when it is conveyed through the device. In addition, the solids separated from the suspension cannot be connected to the screw thread segments with one another to the screen cylinder at the outlet, so that continuous conveying can be achieved, since the screen cylinder is made more difficult on this side. . is open. The solids just fall on the edge of the

Furthermore, a device with a lying screen cylinder is out and can there in any rotatable screen cylinder known, are collected on the inner 45 way.

wall snails are attached. Also in this the separating device according to the invention is for

Case is no possibility of cleaning the sieve cylinder treatment of suspensions with very different

ders provided. However, the known pre-loan properties are intended to be suitable and effected in all

direction also not to dewater with inhomo- cases a safe and extensive thickening, .genen solids are used for contaminated liquids, 50 Always the suspension by appropriate

but rather for cleaning steel chips, adjusting the speed of rotation, the inflow

for this purpose at one point of the screen cylinder quantity and the inclination of the main axis of the screen cylinder

be splashed with washing liquid. The known are thickened so far that the discharged

The device works as a rotatable screen support for solids without further dewatering, for example for carrying the items to be rinsed off. 55 can be transported on ■ truck trailers.

The invention is directed to a separating. In particular, this also applies to otherwise very

To create a device in which the above-mentioned difficult-to-drain suspensiopen. It was

Disadvantages are avoided and with which it is found possible that the device according to the invention

is, all, especially with inhomogeneous consolidation, especially for thickening vegetable water suspensions contaminated with substances in a satisfactory 60 is suitable. In the same way, however, a

Way under continuous conveyance through the thickening of oxygen sludge from steelworks,

Thicken and drain the device. d. H. a completely different suspension.

For this purpose, the separating device according to the invention. It follows that the device according to the

manure characterized in that the screw invention practically for everyone in question Gangways with the inner surface of the screen cylinder 65 dirty water can be applied. It is

are firmly connected, the screen cylinder via a device very simple in its design

Drive is rotatably arranged, the main axis of and in operation.

Screen cylinder an angle of preferably 10 to According to a particularly advantageous feature

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the screen cylinder at the exit in a funnel-shaped device according to the invention with partially indicated

Guide wall over which the separated solids in sieve mesh, ■.

a collecting container or on a conveyor belt F i g. 2 in the left part a view from the right and

or the like gives up! . in the right part a cut about in the middle

The device according to the invention is also 5 right to the main axis of the screen cylinder to Fig. Ί characterized in that the housing at least and. . 'consists of a drip pan and also additional F i g. 3 developed worm threads of the Sieblich a fairing with covers and a cylinder. . May have intermediate piece. This enables a screen cylinder 1 to be rotatable in an upright position Removal of the filtrate, and housing 4 arranged in iodern2, 3 is formed. At the In addition, a self-contained device, an end wall of the screen cylinder is closed which can be set up easily and little by an annular disk 5, which is equipped with a bearing 6 Takes up space. The drive can be connected within. This camp is supported on a of the housing. Inlet nozzle 7 for the suspension or on the wall

Preferably there is (are) in one or more 15 of the housing 4.

Winding (s) of the .Schneckenganges a sieve each. On the other side, namely at the exit, is

shovel arranged interchangeably. Through this the screen cylinder at its outer end on rollers 8

Screen paddles will be a part of the on the. Stored inside surface. The screen cylinder is not on this side

of the screen cylinder remaining, d. H. So, partially completed, but has a funnel-shaped

show thickened solids up to about 20 baffle 9. The screen cylinder is driven

The apex of the screen cylinder promoted. They fall via an electric motor 10, which is a pinion

from there down again, whereby a loosening drives continuously variable transmission 10cz, and one

with simultaneous separation of the solid and liquid belt drive 11, which engages a hollow shaft 12,

Components is effected. The ones connected to the screen cylinder and the

these sieve blades in the last screw flights 25 comprises inlet nozzles 7,

in front of the exit. . Inside the screen cylinder there are screw flights

The screen cylinder is advantageously also seen in FIG.

Mesh size of different sieve fabrics, "ins- · The through the inlet connection 7 in the sieve cylinder special at the entrance with coarser sieve meshes, arriving suspension is through one at the strung. In this way, the 30 inlet nozzles attached to each baffle plate 14 can be most equally suitable. Conditions for thickening the too moderately distributed. In addition, it becomes a turbulence-free sturgeon Select the suspension, while maintaining a condition so that the fixed notes that have been set is that in the case of the preferably precursors, they are not whirled up again by the feed stream Embodiment will be a particularly good belt. Otherwise it flows through the sieve effect in the case of a suspension with a coarser solid cylinder, the filtrate which passes through is into a below one substances reached, which is then also with the large drip tray 15 attached to the screen cylinder Throughput can be treated, while with difficult a filtrate drain port 16. The retained The suspensions to be separated are advantageously around solids lie between the screw flights 13 will proceed in reverse, d. H. So, the coarser sieve and be slowly from these, towards the exit Arrange tissue towards the exit is promoted to a 40. You get to new sieves and complete clogging by the already largely tissue, which leads to increasing drainage avoid thickened solids. he follows. .

The device according to the invention is also to prevent the solids from escaping too quickly characterized in that avoiding the screen cylinder from through the screen cylinder is the main interchangeable Sieve fields is composed. 45 axis of the screen cylinder to the horizontal plane ge-open in this way one can also arrange inclines with a change, the inclination angle λ im the suspension of the sieve cylinder should generally be no greater than 15 °. Nor sieve fabrics different mesh sizes will give the best results with tighten. There is also the possibility of reaching an angle α of 10 to 15 °, Any parts of the screen cylinder that have become damaged are loaded quem to be able to change. The sieve fields can be thrown off funnel-shaped baffle 9 and can the screen cylinder in the circumferential direction and given in any way collected or transported away if also subdivide in the axial direction. will.

According to a particularly advantageous feature, in some screw flights, in particular the sieve cylinder at the entrance by means of an annular disk and 55 of them in the half of the sieve cylinder, which is located at the outlet of a hub carrying the hollow shaft on the inlet, exchangeable cross plates or sieve nozzles are stored and near the exit provided by two blades 17,18,19 through which the one-rollers are guided. This provides a very particularly thickened solids up to the apex of the sieve fold and to be conveyed cylindefs to the device according to the invention. They then fall on the adapted type of storage. With long sieve 60 inner cylinder bottom, where a renewed cylinder can be done between the end storage, ins- separation of solids and filtrate. The special reason for this in the area of half the cylinder length is that in the second half of the second half of the cylinder there is another. Storage by at least a sieve cylinder, the suspension is often already largely pre-thickened by two rollers supported on the outer wall, so that further drainage can be seen. _{: s} ..,. · ■. 65 of the normal conveyance through the worm flights The invention is now no longer carried out on the basis of an Aus. Explained by the dropping and leadership example in the drawing. It shows clapping on the inner cylinder base.

substance and filtrate and thus renewed drainage. The sieve shovel 19 should not be arranged directly at the exit, otherwise it will be discharged safely would be endangered.

The screen cylinder can be designed to be round and covered with screen fabric. However, this has the Disadvantage that changing the screen fabric is relatively difficult. It is therefore advantageous to use individual Sicbfelder, whereby under certain circumstances a completely round shape of the screen cylinder Can be used. The individual screen fields can then be exchanged very quickly will. A subdivision of the screen mesh into small screen fields also has the advantage that the screen mesh are resilient with large amounts of solids, which is especially true when thickening heavy Sludge, for example with Oxygen sludge and granulate, is important. The mesh size can vary between 10 and 0.01 mm, even within the screen cylinder. This depends, as already carried out, depends on the good used. The screen mesh can be made of plastic, phosphor bronze or the like exist.

The speed of rotation of the screen cylinder is about 5 to 25 rpm. A lower speed of rotation is usually required to give the filtrate time to drain. With a greater length of the sieve fabric and a larger mesh size, especially with easy-to-screen meshes Solids, however, considerably higher rotational speeds can also be selected. The solids adhering to the screen mesh are upwards as the screen cylinder rotates out and continue to give off adhering filtrate. They will be near the vertex, at best behind the top dead center, detached with the help of spray pipes 20 and then fall down into the next worm gear. The spray pipes, which are also replaced by cleaning nozzles of other types can, can air. Splash water or steam onto the mesh. When thickening vegetable ■ dirty water can be sprayed off with water. However, air and water vapor often turn out to be more expedient. The spray tube 20 can be arranged to be adjustable, as shown in FIG. 2 shown schematically is. so that the most favorable position for cleaning the sieve fabric can be selected. In . F i g. 1 is the spray tube in the upper, in F i g. 2 arranged in the position shown in dashed lines. The length of the separation device depends on the particular suspension to be thickened. One can . For example, if the cylinder diameter is 1 m, choose a length of 4 m. To make the establishment convenient To be able to adapt to the respective conditions is a division of the screen cylinder into individual elements provided, these cylinder elements advantageously having a length of 1 m. In F i g. 1 is the structure of three corresponding cylinder elements shown. Correspondingly, the worm flights can also be adapted to these cylinder elements being. This not only has the advantage that, for example, the individual cylinder elements with Can equip sieve fields of the same mesh size and then combine as desired, but also has the advantage that the entire device, including the outer housing, is designed accordingly can. So you can each have an end piece for the entrance with the inlet connection 7, the drive 10 to 12 and the front part of the collecting tub and an outer panel 21 with an end piece for the exit with the rear part the drip pan, a top cover 22 and a cover 23 for the discharge opening in this way combine that depending on the length of the screen cylinder

ίο an intermediate piece 24 or more between the appropriate outer covers are used.

Claims (7)

Patent claims: 1. Separator for solids. from a Suspension, consisting of a screen cylinder, the main axis of which is inclined to the horizontal plane, arranged in the screen cylinder Screw flights for transporting the separated solids to the exit higher than the entrance and a screen cylinder surrounding housing with filtrate outlet nozzle, characterized; that the Screw flights (13) are firmly connected to the inner surface of the screen cylinder (1), the -Screen cylinder (1) via a drive (10 to 12) • is rotatably arranged, the main axis of the screen cylinder (1) encloses an angle of preferably 10 to 15 ° to the horizontal plane, a Front wall at the inlet of the screen cylinder (1) from ■ an annular disc (5) and the inlet connection (7) closed, but the other end wall at the exit is open and outside of the whole Sieve cylinder (1) at least one spray tube (20) is arranged. 2. Separating device according to claim 1, characterized in that the screen cylinder (1) at the outlet merges into a funnel-shaped baffle (9). 4i> 3. Separating device according to claim 1 or 2, characterized in that the housing (4) consists of at least one collecting trough (15) and also, in addition, a cladding (21) with covers (22, 23) and an intermediate piece (24) may have. 4. Separating device according to one of claims 1 to 3, characterized in that in One sieve blade (17 to 19) can be exchanged in one or more turns of the worm gear is (are) arranged. 5. Separating device according to one of claims 1 to 4, characterized in that the Screen cylinder (1) with screen fabrics of different mesh sizes, especially at the entrance with a coarser screen mesh. 6. Separating device according to one of claims 1 to 5, characterized in that the Sieve cylinder (1) is composed of exchangeable sieve fields. 7. Separating device according to one of the claims 1 to 6, characterized in that the screen cylinder (1) at the entrance by means of an annular disc (5) and a hub carrying the hollow shaft (12) mounted on the inlet connection (7) and close to the outlet is guided by two rollers (8). 1 sheet of drawings