SU1337118A1 - Control system for gauze drum filter - Google Patents

Abstract

The invention relates to control systems for drum mesh filters and can be used in water conditioning or wastewater treatment. The use of the invention will improve the reliability of the control system. The control system contains an inlet pipe 1, a drum 2 with filter elements 3, a washer 14 with a valve 15, a nozzle 16 with an annular float to which the sensitive elements of the level sensor are attached, a control unit whose inputs are connected to the output of the level sensor and the outputs with the valve 15 of the washer 14 and the drive 7 of the drum 2. 1 h. n. f-ly, 3 ill. Q (L oo s oo WW / / / 3a W9 fiR.1

Description

The invention relates to control camera systems 36 occurs until

By the use of a drum-type mesh filter, the water level, which can be used consistently throughout the system, remains constant,

water treatment and wastewater treatment 40. With a further increase

The purpose of the invention is to increase the reliability of the water in the underwater channel 35 in the ease of operation of the device, reducing the energy consumption 2 and the same cost and flow rate of washing water.

FIG. 1 shows a mesh drum filter, general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 -

the control system of the mesh drum wall 40 and the height of the ridge of the weir,

filter (node 1 in Fig. 2). At the same time, the filtered water is flowing. The control system contains the inlet through the wall 40 into the outlet channel 38

the pipe 1, the drum 2, equipped with a filter, and from there comes to the future with the traversing elements 3, the bobbin wheel 4, the boil. In this case, water filtration

sliding bearings 5 and 6, on which. through the filtering elements 3 of the water. Due to the hydraulic resistance of the filter elements 3, a slightly lower level hi is established in the filter chamber 36, equal to the sum of the height

the drum 2 is installed with the possibility of vraseni, equipped with a pinwheel 4, which is engaged with the drive 7 of the drum 2, racks 8 and 9, a pipe 10 for draining the sludge with a hopper 11 and

walks under the action of pressure drop. In the nozzle 16, the water level is equal to the level in the drum. As the filter elements 3 become dirty, the pressure drop across them increases, while increasing

a lid 12 connected to the inlet pipe 20 level in the drum 2 and the nozzle 16 and beating 1 with the help of kerchiefs 13, washing the level in the filter camera 14 with the controlled valve 15 mounted on the racks 8 and 9. The inlet pipe 16 is connected , on which the ring float 17 (Fig. 2). The annular float 17 consists of a ring 18, which is located with a gap on the outside of the nozzle 16 and is mounted on the airtight sections 19 (fig. 3). Fia ring 18 us25

36, as a result of which the annular float 17 is lowered and with it the position sensors 23, 24 and 25 are lowered in the cavity of the nozzle 16. When the sensing element 26 of the level sensor 23 is in contact with water by means of the control unit 29, the actuator 7 is turned on and the control valve 15 is opened. strips 22. On jumper 2, position sensors 23 and 24 and an additional position sensor 25 are fixed with clamping plate 22, and sensitive elements 26, 27 and 28 of which are placed into the internal cavity of nozzle 16 through its top lower open end. The sensors 23 and 24 are connected to the control unit 29 for driving the drive 7 of the drum 2 and controlling the valve 15. An additional sensor 25 pol35

due to which sediment deposited on the walls of the filter elements 3 from the inner cavity of the drum 2, vayut, enters the receiving funnel 11 and out of it through the pipe 10 is discharged into the sewer.

As the washing proceeds, the resistance of the filter elements 3 decreases, the level in the drum 2 and the level in the filter chamber 36 increases. The annular float 17 moves upwards. When lowering the marriage, it is connected to the control unit 30 of the water level 40 in the nozzle 16 to open the actuator 31 of the locking device 32 due to its contact with the sensitive eledachi of the filtered liquid, the device 33ment 27 of the liquid level sensor 24

an audible alarm and a device 34 with the help of a control unit 29 for switching off the alarm. The drive 7 is closed and the control is closed. The cleaning facility consists of a supply valve 15. The reel 2 of the stop channel 35 (Fig. 1), the filter unit and the washer 14 chambers 36 with a concrete base shortens the job. Filter elements 3

while fully regenerated.

If during the washing process the hydraulic resistance of the filter elements does not decrease and the pressure drop continues to grow, the annular float 17 continues to drop according to the level of the liquid in the filter chamber 36, and the liquid level hz in the nozzle 16 increases, then during the cut the filter elements 3 filter 55 reaching the emergency level of the bath difference, the water seeps into the filter liquid reaches the sensing element chamber 36. The filling of the underwater cat 28 of the sensor 25 and a signal is sent to the pump 35 the cavity of the drum 2 and the filter control unit 30, which includes

37 and a bypass channel 38. The filter chamber 36 of the department from the underwater channel 35 is wall 39 and from the bypass channel 38 by wall 40.

The control system operates as follows.

The contaminated water enters the underwater channel 35 and from it through the inlet pipe 1 fills the cavity of the drum 2. Che50

Rabane 2 sets the same level

walls 40 and the height of the crest of the spillway,

the shade of water. Due to the hydraulic resistance of the filter elements 3, a slightly lower level hi is established in the filter chamber 36, equal to the sum of the height

walks under the action of pressure drop. In the nozzle 16, the water level is equal to the level in the drum. As the filter elements 3 become dirty, the pressure drop across them increases, while increasing

 the level in the drum 2 and the nozzle 16 and decreases the level in the filter chamber in the drum 2 and the nozzle 16 and decreases the level in the filter chamber

36, as a result of which the annular float 17 is lowered and with it the position sensors 23, 24 and 25 are lowered in the cavity of the nozzle 16. When the sensing element 26 of the level sensor 23 is in contact with water by means of the control unit 29, the actuator 7 is turned on and the control valve 15 is opened. The drum 2 begins to rotate and the washer 14 starts to work, under the defroster drive 31, by blocking the flow of water through the locking device 32 inlet pipe 1. At the same time, the drum 2 continues to rotate and the washing device 14 is working. At the same time, the acoustic alarm device 33 and the light alarm device 34 are turned on, indicating an alarm Operating mode.

After the filter elements 3 are regenerated and emergency operations are carried out when necessary, upon reaching the nominal differential, the alarm is turned off, the locking device 32 is opened by means of the actuator 31, and the screen drum filter operation continues in the described order.

Claims (2)

Invention Formula . A mesh drum filter control system comprising a filter chamber, a drum with filter elements mounted on the inlet pipe rotatably by means of an actuator, a washing element of filter elements equipped with a controllable valve, a shut-off device for supplying the filtered liquid and a control unit whose inputs are connected to liquid level sensor outputs, and outlets — with actuators of the locking device and rotation drum of the inlet pipe and with a washer valve, characterized in that, in order to increase the reliability of the system, reduce energy consumption and wash water consumption, the inlet pipe is provided with a spigot, the upper end of the spout is located in the filter the chamber, and the level sensor is made in the form of a float mounted on the outer side of the nozzle with the possibility of reciprocating movement along it in the vertical direction; ity elements arranged in the upper open part of the inner cavity of the nozzle. 0 2. A system according to claim 1, characterized in that the float of the level sensor is made in the form of a ring mounted on sealed hollow sections and provided with a bracket for attaching sensitive elements. /// //// // // // U / /// f / rw /// /// /// /// U /, /. / phi.2 29 FIG.