BR-112021006550-B1 - Hyperboloid agitator body for liquid circulation, and agitator and aerator device.

Abstract

A hyperboloid agitator for circulating liquids, in particular water, wastewater or similar, in the center of which a connection portion (2) for connection to a hyperboloid agitator shaft (1) is provided, characterized in that the hyperboloid agitator is formed as a hollow body, with a central opening (3) for supplying air which is provided in the connection portion (2) and in which an air distribution device (9, 10, 11) for distributing the supplied air through the opening (3) to a plurality of air outlet openings (14) provided in the hollow body is provided downstream of the opening (3).

Inventors

• Marcus Höfken
• Thomas Hagspiel
• Torsten Frey
• Walter Steidl

Assignees

• INVENT UMWELT- UND VERFAHRENSTECHNIK AG

Dates

Publication Date

20260317

Application Date

20191129

Priority Date

20190121

Claims (18)

1. 1. HYPERBOLOID AGITATOR BODY FOR LIQUID CIRCULATION, in the center of which is provided a connection portion (2) for connection to a hollow agitator shaft (1), the hyperboloid agitator body comprising: wherein the hyperboloid agitator body is formed as a hollow body, wherein a central opening (3) for air supply is provided in the connection portion (2), wherein an air distribution device (9, 10, 11) for distributing air supplied through the opening (3) towards a plurality of air outlet openings (14) provided in the hollow body is provided downstream of the opening (3), characterized in that the hyperboloid agitator body is formed of an upper casing (5) containing the connection portion (2) and a lower casing (7) connected to the upper casing (5), and wherein the air channels (11) are delimited by the upper casing (5) and the lower casing (7).
2. 2. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized in that the air distribution device (9, 10, 11) has an air distribution space (4) with a plurality of air distribution openings (10) downstream of the opening (3).
3. 3. HYPERBOLOID AGITATOR BODY, according to claim 2, characterized in that each air distribution opening (10) opens into an air channel (11) and is delimited by walls (8) that run radially in some sections.
4. 4. HYPERBOLOID AGITATOR BODY, according to claim 3, characterized in that the air outlet openings (14) are each provided in radially external terminal portions of the air channels (11).
5. 5. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized by the transport ribs (6) that run radially in some sections extending from the first upper side (O1) of the upper casing (5).
6. 6. HYPERBOLOID AGITATOR BODY, according to claim 3, characterized by the walls (8) extending from a second upper side (O2) of the lower casing (7).
7. 7. HYPERBOLOID AGITATOR BODY, according to claim 3, characterized in that the course of the walls (8) corresponds to the course of the transport ribs (6) so that, when the upper and lower casings (5, 7) are joined, the lower part of each transport rib is supported on an upper edge of one of the walls (8).
8. 8. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized in that the second upper side (O2) of the lower casing (7) is formed in a concave manner.
9. 9. Hyperboloid agitator body, according to claim 8, characterized by its concave shape being of the hyperboloid type.
10. 10. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized by the radially outward extending shear ribs (12) being fixed to a second lower part (U2) of the lower casing (7) opposite the second upper side (O2).
11. 11. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized in that the air outlet openings (14) are provided in the vicinity of a peripheral edge (U) of the lower casing (7).
12. 12. HYPERBOLOID AGITATOR BODY, according to claim 11, characterized in that one of the air outlet openings (14) is provided between each two shear ribs (12).
13. 13. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized in that the upper casing (5) and the lower casing (7) are each produced from fiber-reinforced plastic.
14. 14. HYPERBOLOID AGITATOR BODY, according to claim 2, characterized in that the air distribution space (4) is formed of a rotating symmetrical insert, with the air distribution openings (10) provided in the peripheral wall of said insert.
15. 15. HYPERBOLOID AGITATOR BODY, according to claim 14, characterized by the rotating symmetrical insert being conical (9).
16. 16. HYPERBOLOID AGITATOR BODY, according to claim 15, characterized in that the insert (9) is produced from fiber-reinforced plastic.
17. 17. HYPERBOLOID AGITATOR BODY, according to claim 1, characterized in that the liquids are selected from the group consisting of water and wastewater.
18. 18. AGITATING AND GASIFYING DEVICE, characterized by comprising: motor (15); transmission (16) conductively connected to the motor (15) and with a hollow transmission shaft (17); fan connected to a first end (E1) of the hollow transmission shaft (17) and provided for air supply; agitator shaft (1) connected to a second end (E2) of the hollow transmission shaft (17); and hyperboloid agitator body, according to claim 1, fixed to a third end (E3) of the agitator shaft (1).

Description

[001] The invention relates to a hyperboloid agitator body for circulating liquids, in particular water, wastewater or similar. The invention also relates to an agitator and gasification device. [002] A hyperboloid stirring body and a stirring and gassing device are known, for example, from patent document DE 202 07 376 U1. [003] In the known agitator and gasification device, a motor with a transmission is provided at the end of a tower-like structure. A transmission shaft is connected to a hyperboloid agitator shaft, at the end of which a single-cased hyperboloid agitator body is mounted. The hyperboloid agitator body, on its upper side, has conveyor ribs that run radially in some sections, which conveyor ribs bend towards the peripheral edge of the agitator body in a tangential direction. Shear ribs are provided on a lower part of the agitator body at the peripheral edge. An annular line is situated under the agitator body, through which the air line is fed. The air passes through a tower support element to the annular line. [004] The known agitator and gasification device requires the provision of a tower-like structure and, for aeration, also requires the provision of an annular line. More specifically, the known agitator and gasification device is suitable for the circulation and gasification of water, wastewater, or similar substances received in a container. In contrast, the known agitator and gasification device is not suitable, in particular, for the circulation and gasification of natural water bodies such as ponds, lakes, and the like, since there is no solid substrate to support the tower-like structure. Furthermore, the known agitator and gasification device is relatively complex from a manufacturing point of view. [005] The object of the invention is to overcome the disadvantages of the prior art. In particular, a hyperboloid agitator body and an agitator and gasification device will be described, which are universally suitable for the circulation and gasification of liquids. In accordance with a further object of the invention, the production of the agitator and gasification device in particular should be simplified. [006] In accordance with the invention, the hyperboloid agitator body is formed as a hollow body, in which a central opening for air supply is provided in the connecting portion and in which an air distribution device for distributing supplied air through the opening towards a plurality of air outlet openings provided in the hollow body is provided downstream of the opening. Both circulation and gasification of liquids is possible with the hyperboloid agitator body according to the invention. A self-contained hyperboloid agitator shaft can be used to supply the air. In an agitator and gasification device produced using the proposed hyperboloid agitator body, it is possible to dispense with the provision of a tower-like structure and a separate annular line for aeration. Such an agitator and gasification device can be produced with reduced effort. It can be installed easily and quickly on site. In particular, it is not necessary to lay any underwater aeration line. [007] In accordance with an advantageous embodiment, the air distribution device, downstream of the opening, has an air distribution space with a plurality of air distribution openings. Each air distribution opening advantageously opens into an air channel, which is delimited by walls that run radially in some sections. The walls that run radially in some sections bend towards the peripheral edge of the hyperboloid agitator body in a tangential direction. The air outlet openings are each advantageously provided in the radially external terminal portions of the air channels. The proposed design of the hyperboloid agitator body, in particular the air distribution device, makes maximum use of the geometry of the hyperboloid agitator body. A compact construction results from the hollow body design. The provision of air outlet openings in the radially external terminal portions of the air channels contributes to a particularly effective gasification of the liquid in question. [008] In accordance with a particularly advantageous embodiment, the hyperboloid agitator body is formed of an upper casing containing the connecting portion and a lower casing connected to the upper casing, wherein the air channels are delimited by the upper and lower casings. Consequently, the air channels can be produced simply by joining the upper and lower casings. [009] The transport ribs that run radially in some sections advantageously extend from the first upper side of the upper casing. The transport ribs can bend – similarly to the walls – towards the peripheral edge of the hyperboloid agitator body in a tangential direction. The walls advantageously extend from a second upper side of the lower casing. In accordance with a particularly advantageous embodiment, the course of the walls corresponds to the course of the transport ribs so that, wh