RU93297U1 - DEVICE FOR WASTE WATER CLEANING FROM MECHANICAL IMPURITIES - Google Patents

Abstract

 A device for treating wastewater from mechanical impurities, including a mesh drum, auger, a waste storage device, a flushing device, an electric drive, characterized in that the auger is fixedly mounted on a rotating mesh drum, the device housing being placed at an angle of 5-10 ° to the base.

Description

The invention relates to equipment for mechanical wastewater treatment and can be used in urban aeration stations instead of sand traps and primary settlers for the purpose of separating coarse dispersed impurities with a diameter of more than 4 mm from domestic wastewater, as well as primary dewatering of sediments of primary settlers and separation of activated sludge from biochemically oxidized domestic wastewater.

Known installation described in the description to.with. SU 1579531 (publ. 23.07.1990) containing a support frame, a drain cover, an inlet pipe, a shelf for removal of suspensions, a filtering surface made of metal mesh, a screw for unloading suspensions, a drive mechanism. filter drum equipped with shelves.

The disadvantage of this design is the complexity of manufacture and maintenance.

A device for wastewater treatment by filtration according to patent DE 2426024 (publ. 03.20.1975), the main working body of which is a filter drum with shelves on the inner surface. At the same time, the shelves act as an organ removing solid impurities detained by the filtering cloth from the filtering zone and transporting it to the discharge site.

The disadvantage of these devices is clogging by the waste of the above-shelf area, which requires continuous cleaning of the device, also the disadvantage of this design is the complexity of its manufacture.

Known device for cleaning liquids from mechanical impurities according to the patent for PM No. 13326 (publ. 10.04.2000), containing a vertically cylindrical body with a lid and a conical bottom with a coaxially installed in it with the formation of a precipitation channel between them a shell with a screw, with tangential inlet nozzles the liquid to be cleaned and the gas inlet pipe made in the upper part of the shell, as well as the pipes for the outlet of the purified liquid and discharge of mechanical impurities into the container for their collection.

The disadvantages of this utility model is the design complexity and, as a result, the occurrence of frequent malfunctions.

The proposed utility model solves the problem of creating a device for wastewater treatment from mechanical impurities, easy to manufacture and maintain.

To achieve the specified technical result in a device for treating wastewater from mechanical impurities, including a mesh drum, auger, a waste storage device, a washing device, an electric drive, the screw being fixedly mounted on a rotating mesh drum, and the device casing is placed at an angle of 5-10 ° to base.

Distinctive features of the proposed device from the above known, closest to it, is that the screw is fixedly mounted on a rotating mesh drum, and the device body is placed at an angle of 5-10 ° to the base.

Due to the presence of these signs, a design is simple in execution and maintenance.

The drawing shows a technological diagram of the device.

The device consists of an inlet pipe 1, a mesh drum 2, a housing 3, an axis 4, an electric motor 5, a reducer 6, a screw 7, an outlet pipe 8, a washing device 9, a waste storage device 10, a housing base 11.

A device for treating wastewater from mechanical impurities works as follows.

Domestic and similar industrial wastewater is supplied by pressure or non-pressure pipelines to primary mechanical treatment - to a mesh drum filter. The sewage pipe is connected to the inlet pipe 1, through which waste water enters the inner cavity of the mesh drum 2. There are openings on the drum with a diameter of 2-4 mm, through which waste water seeps out, and garbage larger than 4 mm remains inside the drum. If the holes are made smaller than 2 mm, they will become clogged, clogged, water will be removed together with garbage to the waste bin. If you make holes more than 4 mm, the garbage will seep along with water, and only large will be delayed, i.e. the device will work inefficiently. The mesh drum 2, located inside the housing 3, rotates along the axis 4, from the electric drive. The electric drive includes an electric motor 5 and a gear 6, which rotates the drum from left to right (clockwise). Inside the drum there is a screw 7, which is fixed motionless and rotates together with the drum around axis 4. The purified water that has passed through the mesh drum is collected and fed for further processing through the outlet pipe 8, part of the purified water under pressure is constantly supplied to the washing of the mesh drum. Water washes the drum from the outside, cleaning the holes from the inside of the debris. The flushing device 9 is a pipe with nozzles through which water enters. The trash remaining inside the mesh drum is conveyed upward by the screw and discharged into the waste storage device 10, from which it is periodically removed to the landfill (municipal solid waste). The screw 7 is a spiral plate fixedly mounted on a mesh drum. The installation is located at an angle to the base of 5-10 °, when the drum rotates, debris from one turn of the screw spiral falls to the next turn and gradually moves to the end of the drum. In other words, debris is sprinkled in a spiral under the influence of gravity and gradually moves along the drum. Since the drum has an angle of 5-10 °, the wastewater and rinse water accumulate in the lower part of the mesh drum, the base of the housing 11 is hermetic, in order to avoid water leakage from the device. - tilt angle of 5-10 °. The angle is necessary for the flow of water into the lower part of the mesh drum and for dehydration of garbage. It was experimentally found that if the angle is less than 5 °, water will flow out of the filter along with waste, if the angle is more than 10 °, debris will accumulate in the lower part of the mesh drum, making it difficult to filter water through the holes.

- The body of the device for wastewater treatment from mechanical impurities is made of stainless steel, which has such qualities as wear resistance, durability.

The proposed mesh drum filter is used for the treatment of domestic wastewater, as well as for the treatment of industrial wastewater. Advantages: ease of maintenance, automatic operation, durability, wear resistance, low maintenance, small footprint.

Claims (1)

A device for treating wastewater from mechanical impurities, including a mesh drum, auger, a waste storage device, a flushing device, an electric drive, characterized in that the auger is fixedly mounted on a rotating mesh drum, the device housing being placed at an angle of 5-10 ° to the base.