RU2625701C1 - Slime pump for radial secondary sedimentation tank - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: slime pump consists of a truss, at least one outlet tray, a central support, a system of suction pipes with scrapers. At least one suction pipe is made with the individual adjustment system, and at least one outlet tray is made with at least one slide gate.

EFFECT: increasing the slime pump operation efficiency due to providing the possibility of individual adjustment of the suction pipes and the possibility of the slime pump control automation.

2 cl, 3 dwg

Description

The invention relates to the field of wastewater treatment, in particular to devices for separating activated sludge from biologically treated water leaving aeration tanks.

Known secondary radial sump (Eurasian patent No. 017021, published 2012.09.28). The sludge farm is made in the form of a bridge, which in plan is an isosceles triangle, the top of the triangle is located on the central support, and the drive system is on its base.

The activated sludge removal mechanism is made in the form of two trays located directly under the sides of the pedestrian farm and rotating with it. Each tray has a series of bottom suckers for collecting sludge, the amount of which varies depending on the diameter of the sump.

The disadvantages of the sludge pump are the complexity of adjusting the sucking force of each of the bottom suckers, as well as the difficulty of automating the work of adjusting the suckers of the sludge pump.

The technical result to which the invention is directed is to increase the efficiency of the sludge pump by providing the possibility of individual adjustment of the suckers and the possibility of automating the control of the sludge pump.

The technical result is achieved in the following device.

Ilosos consists of a farm, at least one outlet tray, a central support and a system of suckers with scrapers installed inside the bowl of the sump, consisting of the side and bottom of the sump. The farm is driven (rotated) from the gearmotor by means of rollers that move along the side of the sump. Rotating, the farm carries suckers with scrapers, which, due to hydrostatic pressure, supply activated sludge to at least one outlet tray, from where the sludge is sent to the central support and then to the outlet pipe. At the same time, at least one of the suckers has an individual system for adjusting the flow area. The adjustment system consists of two concentric nozzles, one of which is connected to the end of the adjustable pine.

In one embodiment, the first pipe is rigidly attached to the discharge tray at its junction with the sucker. A hole is made in the side of this pipe with an area greater than or equal to the sectional area of the sucker. The second pipe is made with the possibility of concentric rotation around or inside the first pipe and is also made with a hole in the side of an area greater than or equal to the cross-sectional area of the pine.

In one embodiment, the rotation of the second pipe is carried out by means of an adjusting rod fixed with the possibility of rotation around its axis on the frame of the device, and also rigidly connected to the plug of this pipe. If the lateral openings of the nozzles coincide, a full outflow from the sucker to the tray is ensured, and when the external nozzle is rotated relative to the indicated position by turning the adjusting rod, the coincidence of the openings is not ensured and the outflow from the sucker to the tray partially or completely overlaps. Thus, it is possible to easily adjust the cross-section of the pine, which allows, if necessary, to control the suction capacity of the pine and, with several rows of saunas, to redistribute the flow of sludge through various saunas.

In the outlet tray in front of the movable shell, there is a slide gate. The slide gate consists of a housing, inside which a slide with a screw is installed, which allows lowering / raising the slide. In the closed position, the gate is raised. Opening, the gate moves down. In the fully open position, the upper edge of the gate is flush with the bottom of the tray. Closing, the gate rises up, creating a backwater in the tray. Depending on the number of zones in the outlet tray, several gates can be installed. In addition, each of the gates will create a backwater in its area. The task of the gate is to automatically shut down one of the zones of the tray from operation or partially reduce its flow area during hours when the load on the sludge pump drops, which increases the efficiency of the sludge pump.

Preferably, the control rod and slide gate are controlled by motors controlled by an electronic control system.

The above shows that the combination of the claimed features ensures the achievement of the goal, namely it allows to increase the efficiency of the sludge pump.

Figure 1 presents a General view of the sludge pump; in Fig.2 - a system for adjusting the flow area of the sucker, Fig. 3 - slide gate installed in the outlet tray of the device.

The ilosos consists of a farm 1, a discharge tray 2 and a system of suckers 3, is installed inside the sump bowl, consisting of a side 4 and a central support 5. The farm is driven (rotated) from the gearmotor by means of rollers that move along the side of the sump. Rotating, the farm 1 carries along the bottom of the sump sediment 3 with scraper, while the suckers 3 due to hydrostatic pressure feed activated sludge into the discharge tray 2, from which the sludge is sent to the central support 5 and then to the discharge pipe.

Each of the suckers has an individual system for adjusting the flow area. The adjustment system consists of two concentric nozzles 6 and 7. The nozzle 6 is rigidly fixed to the outlet tray in the place of its connection with the pine 3. A hole 8 is made in the side of the nozzle 6, an area greater than or equal to the sectional area of the pine 3. The nozzle 7 is made with a plug 9 in the upper part connected to the adjusting rod 10, mounted on the frame of the structure, is made with the possibility of concentric rotation around the pipe 6. The pipe 7 also has a hole on the side with an area greater than or equal to the cross-sectional area of the pine 3.

If the lateral openings of the nozzles 6 and 7 coincide, a full outflow from the sucker 3 to the tray 2 is ensured, and when the nozzle 7 is rotated relative to the indicated position, the coincidence of the lateral openings of the nozzles 6 and 7 is not ensured and the outflow from the sucker 3 partially or completely overlaps into the tray 2.

In the outlet tray in front of the movable shell there is a slide valve 11. The slide valve consists of a housing 12, inside which a slide 13 with a screw 14 is installed, which allows lowering / raising the slide. In the closed position, the gate 13 is raised. Opening, the gate moves down. In the fully open position, the upper face 15 of the gate 13 is at the same level with the bottom 16 of the tray 2. The screw 14, and therefore the position of the face 15 of the gate 13 can be controlled by a motor.

Thus, the technical result of the invention is achieved in the form of increasing the efficiency of the sludge pump by providing the possibility of individual adjustment of the suckers and the possibility of automating the control of the sludge pump.

Claims (2)

1. A suction pump for a radial secondary sump, consisting of a truss of at least one outlet tray, a central support and a system of suckers with scrapers, characterized in that at least one sucker is made with an individual adjustment system, and at least one outlet tray is made with at least one slide gate. 2. Ilosos according to claim 1, characterized in that the individual adjustment system is made of two concentric nozzles made with an opening in the side equal to or greater than the cross section of the adjustable sucker, while one of the nozzles is connected to the sucker, and the second is made with the possibility of adjustable rotation around or inside the first.

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