RU36402U1 - Device for trapping and removing solids from wastewater - Google Patents

Description

7 E 03 F 5/14

Device

The utility model relates to the field of wastewater treatment and can be used in various types of sewerage systems to detain and remove mechanical impurities from wastewater.

A device for detaining and removing mechanical impurities from wastewater, comprising a housing placed on supports, a grate made in the form of a closed continuous circuit with catch hooks fixed to it and installed in the housing with the possibility of continuous movement, a grate cleaning device made in the form of a brush of flexible rods connected to the rotation drive assembly (Utility Model No. 25745, class 7E 03 F 5/14, bull. No. 29, publ. 10/20/02).

It is also known a device for trapping and removing mechanical impurities from wastewater, containing a frame with a flat filter baffle installed in it at an angle to the horizon and made of trapezoidal grates connected to the studs, a filter baffle cleaning system made in the form of a plate-type conveyor moving suspended impurities in the upper zone of the device and dropping them into a container or onto a conveyor (Yakovlev S.V., Voronov Yu.V. Wastewater and wastewater treatment / Textbook for high school a, M .: DIA. 2002. 704 pp.).

This device, for most of the essential features, coincides with the claimed utility model and is therefore taken as a prototype.

As the main disadvantages of the known device can: but indicate the following. in for the detention and removal of solids from wastewater

the septum becomes insufficient, since a long plate cannot adapt to the profile of the filter septum, which for many reasons will not remain flat during operation. This will lead to clogging of certain sections of the filtering partition, increasing its hydraulic resistance and increasing the difference in levels of wastewater before and after the partition.

2. The installation of a filtering flat partition in the wastewater stream at a certain angle to the horizon limits the possibility of increasing the working area of the filtering partition, which in this case is determined by the width of the channel, the water level in front of the filtering partition and its angle of inclination to the horizon. Therefore, if you need to increase the specified filtering surface area, for example, if you want to isolate fine fractions and maintain the performance (flow rate) of the cleaned liquid, you will need to install several devices with different clearances in series.

3. In the g star device, the scrapers are, as a rule, equipped with working edges that remove trapped impurities from the filtering partition made of rubber, which makes it impossible to effectively remove impurities of a fibrous type.

4. The use of plates, the length of which is equal to the width of the channel, requires the installation of at least two chains and, accordingly, two sprockets, both leading (drive) and driven, which, in combination with the design of the device, increases the metal consumption and installation cost, which are unjustified, especially for fairly narrow channels .

The utility model aims to address these shortcomings.

The purpose of the utility model is to increase the efficiency of wastewater treatment, expand the possibilities of extracting impurities of finer fractions or increase the flow rate of wastewater with constant channel dimensions, simplifying the design and reducing its metal consumption.

This goal is achieved by the fact that in the device for the detention and removal of mechanical impurities from wastewater, containing a frame (body) with a filter baffle installed therein made of perforated material, a filter baffle cleaning system in the form of a plate-type conveyor moving the detained and settled on an impurity partition in the upper zone of the device and a git dropping them onto the conveyor, the filtering partition is made in the form of a groove with inclined side walls, the device is equipped with but the cleaning system of the filtering partition in the form of scrapers corresponding to the profile of the trough and connected to the traction chain located on the drive and driven sprockets mounted in the frame with the possibility of continuous rotation and connected to the drive unit, while the side scrapers are mounted on the carrier bar with the possibility of swinging in a plane perpendicular to the direction of their movement, and the position of the hinge is adjustable and the scrapers (at least one) are equipped with brushes from elastic rods.

of the sides to the base of the gutter, change both the area and, respectively, the cross-section of the filtering partition and ensure the retention of impurities of smaller fractions, and the adjustable installation of side conveyor scrapers on hinges that allow them to swing allows them to self-install relative to the walls of the gutter and more efficiently remove settled sediment from the latter, and equipping the scrapers with a brush of elastic rods improves the quality of cleaning the filtering partition, especially from impurities of a fibrous type.

In Fig.1 presents a schematic diagram of the proposed device, in Fig. 2 - section along A - A.

The device comprises a frame 1 with a filter baffle 2 installed in it in the form of a trough with inclined side walls 3, in which two sprockets are mounted rotatably: the drive 4, connected to the drive unit, and the driven 5, located at the bottom of the device. On the traction chain, placed on the sprockets, support bars 6 are installed, to which side scrapers 8 are connected with the help of gyarnics 7, while the hinges are mounted on the carrier rail adjustable. The device is equipped with a receiving hopper 9 for trapped impurities with an outlet pipe 10.

The device operates as follows.

Frame 1 with a filter baffle 2 is installed in the channel, blocking the flow of wastewater. Delayed mechanical impurities, due to the angle between the walls of the filtering partition and the direction of movement of the waste water flow, are displaced to the central part of the trench. Impurities settled on the surface of the filtering partition 2 by moving conveyor scrapers 8 are moved to the upper part of the device, where they are discharged into the receiving hopper 9 and then removed through the outlet pipe 10 into either the container (container) or the transport device.

Claims (3)

1. A device for trapping and removing mechanical impurities from wastewater, comprising a frame (body) with a filter baffle installed in it at an angle to the horizon and made of perforated material, a filter baffle cleaning system made in the form of a plate-type conveyor that moves detained and settled on the impurity partition to the upper zone of the device and dropping them into a container (container), characterized in that the filter partition is made in the form of a groove with inclined side walls, devices The property is equipped with a cleaning system for the filtering partition in the form of scrapers corresponding to the profile of the trough and connected to the traction chain located on the drive and driven sprockets mounted in the frame with the possibility of continuous rotation and connected to the drive unit. 2. The device according to claim 1, characterized in that the side scrapers are mounted on the carrier bar of the traction chain with the possibility of swinging in a plane perpendicular to the direction of their movement, while the position of the hinge is adjustable. 3. The device according to claims 1 and 2, characterized in that the scrapers (at least one) are equipped with a brush made of elastic flexible rods.