RU36399U1 - Device for trapping and removing coarse impurities from wastewater - Google Patents

Description

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Device for trapping and removing coarse impurities from wastewater

The utility model relates to the field of wastewater treatment and can be used in sewage systems of industrial facilities, cities and towns.

Known devices for trapping and removing coarse impurities from wastewater, for example, a device comprising a housing, a bearing assembly housed in a housing, a filter drum made of perforated material or mesh, mounted on the shaft in bearings with the possibility of continuous rotation and connected to the drive unit , see the mesh drum filter (Sewerage of populated places and industrial enterprises. N.I. Likhachev and others. M .: Stroyizdat, 1981. -639 p.).

Also known is a device for the disposal of solid waste containing a rotating screw installed in a fixed cylindrical body located in the wastewater channel (Water supply and sanitary equipment. - 1997, No. 2)

The specified device for most essential features coincides with the claimed utility model and is taken as a prototype.

As the main disadvantages of the prototype, you can specify the following.

1. The receiving part of the device is cylindrical, which necessitates the presence of the same channel profile, and, accordingly, refinement of the channel when using the prototype, which is associated with significant costs.

2. The case of the device and the screw have a sufficiently large diameter, especially for channels with significant wastewater consumption, which leads to the increase in metal consumption, which is determined in this case by the need to ensure sufficient rigidity of the body to obtain a stable gap between the body and the screw.

3. The design of the device, made in the form of a fixed cylindrical body with an auger located inside, complicates the preventive cleaning operations of the body from trapped impurities, for example, fiber-type impurities that are difficult to remove with the screw from the inner surface of the body.

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4. The design of the known device limits the possibility of increasing the filtering surface area without changing the channel profile.

5. The design of the prototype is quite low-tech, which increases the cost of its manufacture and repair.

The proposed utility model is aimed at eliminating these shortcomings.

The purpose of the proposed utility model is to simplify the design, reduce metal consumption, improve working conditions and reliability of the screw, increase the convenience of maintenance and repair, reduce the cost of manufacturing and repair of the device.

This goal is achieved by the fact that in the known device comprising a housing with filter elements housed therein, a screw mechanism mounted in the housing with the possibility of continuous rotation and connected to the drive unit, the filter elements are made in the form of two flat perforated sheets mounted on the side walls of the channel under zpglom to the direction of movement of the flow of wastewater, while the housing of the screw mechanism is placed at the head of the angle formed by the sheets, and made perforated in the form of a half cylinder, arr binder with sheets perforated filtering septum.

The implementation of the device using two perforated sheets installed on the sides of the channel at an angle to the direction of movement of the waste water stream, greatly simplifies the design of the device, reduces the dimensions of the screw mechanism, improves its working conditions, facilitates maintenance, increases the reliability and durability of the device.

The angle between the plane of each perforated sheet and the direction of movement of the wastewater stream is selected from the condition of ensuring the sliding of impurities trapped on the surfaces of the sheets along the planes of these sheets in the center of the channel into the area of the screw mechanism. The intensity of the sliding of impurities depends on the velocities of the liquid directly at the surface of the sheets, the nature (physical nature) of the impurities, etc. The dimensions of the auger allow it to be made shaftless by appropriate deformation of the steel strip.

The installation of perforated sheets at an angle to the direction of fluid flow makes it possible to change the total area of the filtering surface, which, together with the choice of sizes of perforation holes, allows the separation of impurities in a large range of their sizes.

In FIG. 1 shows a General view of the proposed device, figure 2 is a view of the device in plan.

A device for trapping and removing coarse impurities from wastewater contains a frame 1 made in the form of a welded frame with perforated sheets 2 mounted on it and a screw mechanism housing 3, while the BbinojraeH screw mechanism housing is made of perforated material in the form of a half cylinder. In the housing 3 there is a screw 4 with the possibility of continuous rotation and connected with its upper end to the drive unit.

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the auger body, while mechanical impurities, the sizes of which exceed the size of the holes, are retained on the surfaces of the sheets and then, under the influence of moving water, crawl into the middle part of the channel, where they enter the auger mechanism housing. impurities are raised by a screw to the upper part of the body, where they are additionally sealed and then removed through the outlet pipe into the container or onto the conveyor.

Claims (1)

A device for trapping and removing coarse impurities from wastewater, comprising a frame (housing) with filter elements installed in it, a screw mechanism in the housing with the possibility of continuous rotation and connected to the drive unit, characterized in that the filter elements are made in the form of two flat perforated sheets installed along the side walls of the channel at an angle to the direction of movement of the flow of wastewater, while the housing of the screw mechanism is placed at the head of the angle formed by perforated sheets, and is made erforirovannym in the form of a half-cylinder and forming together with the perforated sheets filtering septum.