Horizontal agitator

Abstract

The invention relates to a horizontal agitator for producing a flow in a clarifier, a propeller being connected to a submersible motor which is axially offset in relation thereto, wherein the propeller and the submersible motor are designed such that a flow in a direction from the propeller towards the submersible motor is produced when the submersible motor is operated, and wherein plate-shaped flow guide elements are provided downstream of the propeller and extend in at least an axial plane that runs substantially parallel to the propeller axis. In order to improve the efficiency of the horizontal agitator, it is proposed in accordance with the invention to support the submersible motor on a bottom of the clarifier via at least two first flow guide elements.

Claims

1. A horizontal agitator for producing a flow in a clarifier, comprising: a propeller connected to a submersible motor which is axially offset in relation thereto; and plate-shaped flow guide elements provided in downstream of the propeller, each of the plate-shaped flow guide elements extending in an axial plane thereof running substantially parallel to a propeller axis, wherein the propeller and the submersible motor are designed such that a flow in a direction from the propeller towards the submersible motor and through the plate-shaped flow guide elements is produced when the submersible motor is operated, the submersible motor is supported on a bottom of the clarifier via at least two first flow guide elements, the first flow guide elements are interconnected via at least one carrier plate receiving the submersible motor, the first flow guide elements extend from the carrier plate such that the first flow guide elements point away from each other at an angle of more than 90, and the carrier plate with the first flow guide elements installed thereon forms a mount, on which an assembly unit formed from the submersible motor and the propeller is detachably fastened by a coupling device.

2. The horizontal agitator according to claim 1, wherein the first flow guide elements each extend from the carrier plate such that the first flow guide elements point away from each other at the angle from 100 to 120.

3. The horizontal agitator according to claim 1, wherein the first flow guide elements and/or the at least one carrier plate are produced from edged sheet metal.

4. The horizontal agitator according to claim 1, wherein the first flow guide elements are interconnected on a bottom side via at least one connection element.

5. The horizontal agitator according to claim 1, wherein a second flow guide element is provided, which extends in a direction pointing away from the bottom of the clarifier from a support structure installed on the carrier plate or from the submersible motor.

6. The horizontal agitator according to claim 5, wherein the submersible motor is located between the first flow guide elements and the second flow guide element.

7. The horizontal agitator according to claim 1, wherein a water flow from the propeller towards the submersible motor and a water flow from the propeller through the plate-shaped flow guide elements are parallel to each other.

Description

(1) An exemplary embodiment of the invention will be explained in greater detail hereinafter on the basis of the drawings, in which:

(2) FIG. 1 shows a perspective view of the horizontal agitator,

(3) FIG. 2 shows a sectional view according to FIG. 1,

(4) FIG. 3 shows a front view according to FIG. 1,

(5) FIG. 4 shows a side view according to FIG. 1,

(6) FIG. 5 shows a plan view according to FIG. 1 and

(7) FIG. 6 shows a rear view according to FIG. 1.

(8) With the horizontal agitator shown in the figures, a propeller 1 is connected via a gearing 2 to a submersible motor 3. The submersible motor 3 is operated in such a way that a flow directed from the propeller 1 to the submersible motor 3 is produced.

(9) Plate-shaped flow guide elements 5, 7 are provided downstream of the propeller 1 and extend in an axial plane (AP) running substantially parallel to the propeller axis (PA).

(10) The propeller 1, together with the submersible motor 3 and any provided gearing 2, forms an assembly unit that is supported on a front carrier plate 4a and a rear carrier plate 4b. First flow guide elements 5 extend from both the front carrier plate 4a and rear carrier plate 4b at an angle from approximately 100 to 120. The first flow guide elements 5 are formed in a plate-like manner. The planes thereof run approximately parallel to an axis of the propeller 1.

(11) The front carrier plate 4a and the rear carrier plate 4b and the first flow guide elements 5 are advantageously produced from folded sheet metals. To improve the stability, the carrier plates 4a, 4b and/or the flow guide elements 5 are double-walled. Here, the folded sheet metals are expediently connected by means of rivets. A mount A produced in this way has excellent stability.

(12) In the region of the bottom B of the clarifier, the first flow guide elements 5 are expediently connected to a front connection element 6a and a rear connection element 6b. The front connection element 6a and the rear connection element 6b each have a flat incident-flow face and downstream a steeply sloping flow-off face.

(13) The assembly unit denoted by reference sign M has a second flow guide element 7, which extends vertically above the submersible motor 3 and has a curved incident-flow edge.

(14) The assembly unit M is detachably connected to a mount A, which comprises the carrier plates 4a, 4b, the first flow guide elements 5 extending therefrom and the connection elements 6a, 6b. To detachably connect the assembly unit M to the mount A, a first coupling element 8a and a second coupling element 8b are installed on the front carrier plate 4a and on the rear carrier plate 4b. A third coupling element 9a corresponding to the first coupling element 8a and a fourth coupling element 9b corresponding to the second coupling element 8b are installed on the mounting element M.

(15) Reference sign 10 denotes a cable. A guide 11, preferably a slotted guide, by means of which the assembly element M is guided along the cable 10, extends from the second flow guide element 7.

(16) To lift the assembly unit M, a further cable 12 can be fixed at the assembly unit M. By exerting a tensile stress by means of the further cable 12, a coupling between the mount A and the assembly element M caused by the coupling elements 8a, 8b, 9a, 9b can be detached, and the assembly element M can be guided along the cable 10 and lifted from the clarifier.

(17) As can be seen from FIG. 2, one end of the cable 10 can be guided through the rear carrier plate 4b and the front carrier plate 4a and fastened to the assembly unit M in the region of the third coupling element 9a. The other end of the cable 10 can be guided via a pulley (not shown here) fixed above the clarifier and fastened at the fastening point. The cable 10 can thus form a cable winch together with the further cable 12, by means of which the assembly unit M is guided when lowered in the direction of the mount A and can be coupled there by cooperation of the coupling elements 8a, 8b, 9a, 9b.

(18) Also, second flow guide element 7 extends in a direction pointing away from the bottom of the clarifier from a support structure (S) installed on front carrier plate 4a and rear carrier plate 4b or from the submersible motor 3.

LIST OF REFERENCE SIGNS

(19) 1 propeller 2 gearing 3 submersible motor 4a first carrier plate 4b second carrier plate 5 first flow guide element 6a first connection element 6b second connection element 7 second flow guide element 8a first coupling element 8b second coupling element 9a third coupling element 9b fourth coupling element 10 cable 11 guide element 12 further cable A mount B bottom M assembly unit