RU2733608C1 - Aeration device for closed containers, extracted without pumping of aerated fluid - Google Patents

Abstract

FIELD: treatment of water, industrial and household waste water or sewage sludge.

SUBSTANCE: invention relates to biological treatment of waste water, specifically to aeration device, extracted without pumping of aerated fluid. Aeration device includes vertical feed pipeline with engagement and sliding assemblies, rotary device, horizontal distributing pipelines, support trolley with engagement elements and guides, lifting chain or rope. Horizontal distributing pipeline of aeration element moves along lateral guides by means of support trolley with engagement elements and has connection by means of rotary device with vertical supply pipeline, which moves along central vertical guide by means of assemblies of engagement and sliding. Guides are rigidly fixed along one vertical wall and bottom inside aerated tank with provision of smooth turn at joint of vertical and horizontal lateral guides. At the same time vertical supply pipeline in upper part has locking device-tap with detachable connection on the side of outlet vertical pipeline of aeration element. On the air supply pipe from the air manifold there is a rotary joint for turning the disconnected shutoff device under the ceiling to release the opening of the head when removing the aerator by means of a chain or a cable and an external lifting mechanism.

EFFECT: technical result consists in simplification of maintenance and repair of aeration system without need to stop operation of structure, as well as increase in reliability.

1 cl, 3 dwg

Description

The invention relates to a device for mixing and oxygenation of air in water and is used in biological wastewater treatment plants, pneumatic flotation devices, contact tanks, etc.

Known is a device for recoverable injection water-jet aerators with a mechanical electric drive, which consume significantly more electricity than pneumatic aeration systems with an external compressor.

The closest technical solution to the claimed invention is a device for aeration of water with submersible aerators with a load suspended by a rope or chain and retrieved by lifting vertically up from the water. This method involves an open top reservoir with ladders for access to aerators raised from the water, as well as the construction of a pavilion above the reservoir, which requires heating and ventilation.

This invention allows the installation and removal of aeration elements in a tank having an overhead cover, with small heads, without the need to pump out the tanks and stop the operation of the structure.

The present invention is aimed at solving a technical problem, simplifying the maintenance and repair of the aeration system without the need to stop the operation of the facility.

The problem to be solved by the claimed invention is the creation of an easily removable device for aeration of liquid in closed containers with caps, reliable and easy to maintain and repair, the maximum reduction in the cost of operating the aeration system.

The task of creating an easily removable device for aeration of liquid in closed containers with tops is solved by using the supporting structure of aeration elements consisting of two rigid distribution pipes, at one end of which there is a sliding unit with engagement elements, which serves to move along two guides of the bearing distribution pipes with aeration elements , the other ends of the distribution pipes have a special swivel joint with the delivery pipe, which moves vertically along the guides and has slide assemblies with hooks.

At the same time, the maximum reduction in the cost of construction of a structure and operation of the aeration system is achieved due to the absence of the need to build a heated and ventilated pavilion, the absence of the need to stop the operation of the structure and pump out tanks for maintenance and repair of aeration elements.

The technical result is to simplify the maintenance and repair of the aeration system without the need to stop the operation of the facility, increase the reliability, and reduce the cost of operation.

The essence of the proposed technical solution lies in the fact that the horizontal distribution pipeline of the aeration element moves along the guides and has a pivot joint with the vertical supply pipeline, which have sliding nodes and a support trolley with engagement elements that move along guides rigidly fixed along one vertical wall and bottom inside the aerated tank with a smooth turn at the junction of the vertical and horizontal side guides, while the vertical supply pipe in the upper part has a shut-off device (tap) with a detachable connection on the side of the outgoing vertical supply pipe of the aeration element, also on the air supply pipe from the air manifold, has pivoting joint for turning the disconnected locking device under the ceiling, for freeing the head opening when removing the aerator, using a chain and an external lifting mechanism.

The aeration device includes a vertical supply pipeline, a rotary device, distribution pipelines, sliding units and a support trolley with engagement elements and guides, a lifting chain (or cable).

FIG. 1 shows an aeration device for closed containers,

extracted without pumping out aerated liquid, where:

1. distribution manifold;

2. tank with aerated liquid;

3. swivel joint;

4. shut-off valve (valve);

5. detachable connection;

6. vertical supply pipeline;

7. aeration elements;

8. device of engagement and sliding;

9. vertical guide;

10. rotary device;

11. horizontal distribution pipelines;

12. support trolley;

13. side guides;

14. head with cover.

The device works as follows:

Air from the distribution manifold (1), laid under the upper ceiling of the tank with aerated liquid (2), through a pipeline with a swivel joint (3) and a shut-off valve (4), which has a detachable connection (5) at the outlet, enters the vertical supply pipeline (6) through which it enters the tank with the aerated liquid to the required installation depth of the aeration elements (7). Hooking and sliding devices (8) along the vertical guide (9) are located along the vertical supply pipeline. In the lower part of the vertical supply pipeline there is a trolley for moving along a vertical guide (9), with a rotary joint (10), which distributes the air flow to two horizontal distribution pipelines (11), through which air is supplied to the perforated membrane of the aeration element (7). At the end of the horizontal distribution pipelines there are plugs fixed through a swivel joint with a support trolley (12), which serves to move (extract) the aerator along the side guides (13) from the reservoir through the head (14) in the upper ceiling, without pumping out the aerated liquid. To extract the aerator, a chain (or cable) is used, fixed to the rotary device (10), and an external lifting mechanism (stationary or mobile), to which this cable is hooked. It is necessary to turn the shut-off valve (4) into a closed state and disconnect the connection (5), turn the shut-off valve to the side under the ceiling to free the opening of the head. When lifted by the chain, the vertical supply pipe moves upward along the vertical guide (9), dragging along the distribution horizontal pipelines with aeration elements. The other end of the horizontal distribution pipelines moves with a support carriage (12) along the side guides (13) of the aerator. The rise continues until the aerator is completely removed from the top of the container with the aerated liquid. The aerator is lowered to the working position in the reverse order, after having hooked the support cart (12) to the side guides (13), raise the distribution pipes vertically and hook the cart with a rotary joint (10) to the central vertical guide of the lifting mechanism, as the aerator is lowered, engage the vertical the supply line (6) by means of an engaging and sliding device (8) over the vertical guide (9). Lowering continues until the stop of the vertical supply pipe is against the minimum immersion depth limiter. After that, the vertical supply pipeline is connected to the detachable connection (5) of the shut-off valve (4), which is moved to the open position, after which the aerator is ready for operation. A shut-off valve (4) or a valve can be used to adjust the volume of air supplied.

The sequence for removing the aerator is shown in FIG. 2 and 3.

EXAMPLE OF A SPECIFIC PERFORMANCE OF THE DEVICE

The inventive aeration device is made of stainless steel. A perforated sleeve made of plastic material, resistant to biodegradation and biofouling, is used as an aeration element. Designed for aeration of a water-sludge mixture in a concrete tank with internal dimensions of 6 m along the bottom and a depth of 4.5 m. The tank is covered with a reinforced concrete ceiling from above. Polypropylene caps available. Guides are fixed along the vertical wall in the area of the tops and at the bottom, which are attached to the embedded longitudinal stainless steel strips of 50 × 5 mm, which are laid during the pouring of concrete into the tank.

The aerator is lowered along the guides into the working position, using a stainless steel chain and a lifting mobile mechanism of a special design, with a lifting height of 6.5 m.To move along the guides, a trolley with rollers is used, which does not allow it to go away from the guides, as well as device for engaging and sliding the vertical supply pipe. The upper end of the chain is detached from the lifting mechanism and is attached to the head from the inside with a carabiner. To prevent the loss of the chain, it is attached to the upper part of the vertical supply pipe of the aerator with a carabiner before disconnecting.

Air is supplied through an air manifold pipe, fixed under the upper ceiling along the head, from the side of the center of the tank. A pipe with a diameter of 50 mm is tapped from the air manifold pipe, which, through a swivel joint from the HDPE split angle, is fed to a chemical-resistant ball valve with a split outlet at the outlet, through which the vertical supply pipe of the aerator is connected.

At the same time, the proposed technical solution simplifies the maintenance and repair of the aeration system during continuous operation of the treatment system, increases reliability, and reduces the cost of operation.

Claims (1)

An aeration device, retrievable without pumping out the aerated liquid, including a vertical supply pipeline with engagement and sliding nodes, a rotary device, horizontal distribution pipelines, a support trolley with engagement elements and guides, a lifting chain or cable, and the horizontal distribution pipe of the aeration element moves along side guides when by means of a support trolley with engagement elements and has a connection by means of a rotary device with a vertical supply pipeline, which moves along a central vertical guide using engagement and sliding units, while the guides are rigidly fixed along one vertical wall and bottom inside the aerated tank, ensuring smooth rotation on the junction of vertical and horizontal side guides, while the vertical supply pipeline in the upper part has a shut-off valve with a detachable connection on the side of the outgoing vertical There is a swivel joint on the air supply pipe of the aeration element, also on the air supply pipe from the air manifold, for turning the disconnected shut-off device under the ceiling to free the head opening when the aerator is removed using a chain or cable and an external lifting mechanism.

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