CN2541452Y

CN2541452Y - Intelligenjt rotary water decanter

Info

Publication number: CN2541452Y
Application number: CN02228950U
Authority: CN
Inventors: 王洪运; 张云海; 吴友林; 张颜良
Original assignee: Hubei Hongcheng General Machinery Co ltd
Current assignee: Hubei Hongcheng General Machinery Co ltd
Priority date: 2002-04-04
Filing date: 2002-04-04
Publication date: 2003-03-26
Anticipated expiration: 2012-04-04

Abstract

The utility model relates to an intelligent rotating water decanting device, comprising a control device and a rotating water decanting device, wherein a PLC and a frequency-changing speed transmission are arranged inside the control device; a liquid level sensor and a sludge depth transducer are separately disposed on the rotating water decanting device and the wall of a water decanting pool; and the PLC controls the operation of the rotating water decanting device according to the liquid level value of supernatant fluid in the water decanting pool and the sludge depth value which are tested by the liquid level sensor and the sludge depth transducer. The utility model can reliably eliminate the disturbance to a sludge layer when the rotating water decanting device operates, and satisfy the changing and draining performance after the sludge is exhausted through following the supernatant fluid. Also the utility model can regulate one period of water inflow, aeration, deposition and draining time of the sequencing batch activated sludge.

Description

Hydrophone is strained in intelligent rotation

One, technical field

The utility model relates to sewage disposal device, particularly relates to rotation and strains hydrophone.

Two, background technology

Sequencing batch active sludge is the modern technique of widespread use in the dirty water living creature processing technique field in recent years.Because this method is the cycle draining, then to its key equipment---the technical feature of straining hydrophone is had relatively high expectations.It must satisfy three conditions: 1. quantitatively draining: the sedimentary mud of disturbance neither, can not make the mud come-up again, and flow is in accordance with regulations discharged.2. follow the performance of water level: separate for obtaining the limpid treating water in back, drainage mechanism should be near the water surface, and can follow the change of level after supernatant liquor is discharged and carry out draining.3. reliability: draining and stop all control automatically of action of draining, stable action, accurately, lasting reliable.Current, there is a kind of stepping control to strain hydrophone, it is it to be strained tank submerge in advance and strain in the water in pond, (being in the supernatant liquor) then with the degree of depth of water, sets quantity discharged with the time.Because it is not changeless straining the degree of depth of each discharging supernatant liquor in the pond, if the former setting of depth ratio of supernatant liquor is dark, can cause discharging not thorough so, if the former setting of depth ratio of supernatant liquor is shallow, be easy to so the mud of straining at the bottom of the pond is produced disturbance and overdrainage, be about to sewage and discharge, cause recontaminate.This hydrophone of straining both produces disturbance to the mud of straining the pond, also can't satisfy the change of level of following after supernatant liquor is discharged and the performance of draining.

Hydrophone is strained in another kind of speed control by frequency variation, the vulnerability to jamming of same operating mode and the performance of following the change of level draining are strengthened to some extent, but it is poor to different operating mode adjustabilitys, and the traffic coverage of straining hydrophone is by Stroke Control, flexible poor, easily the mud of straining the pond is produced disturbance, equally also can cause the not thorough or excessively discharging of draining in the one-period, cause recontaminate, can not adjust the water inlet of sequencing batch active sludge one-period, aeration, precipitation, efflux time simultaneously.

Three, summary of the invention

The purpose of this utility model is to overcome above-mentioned defective of straining hydrophone, propose a kind of intelligent rotation and strain hydrophone, can reliably carry out speed control by frequency variation to different worker's situations effectively, its Immunity Performance is strong, and can satisfy and follow supernatant liquor and discharge the variation of back water level and the performance of draining.

The utility model is strained hydrophone (5) and formed by control device (1), rotation, it is characterized in that: it comprises PLC and variable-frequence governor, liquid level sensor (6), the dark transmitter of mud (7), and PLC and variable-frequence governor are contained in the control device (1); Liquid level sensor is contained in rotation and strains on the hydrophone (5); The dark transmitter of mud (7) is contained on the pool wall (8) of straining the pond; Control device (1) is connected with step-down gear (3), liquid level sensor (6), the dark transmitter of mud (7) that rotation is strained on the hydrophone (5) respectively by cable.

During work, liquid level sensor (6), the dark transmitter of mud (7) will be strained the water level of the supernatant liquor in the pond and the detection signal of the sludge blanket degree of depth is input in the interior PLC of control device (1), control device (1) is controlled the travelling speed of step-down gear (3) according to the signal of input by the variable-frequence governor output frequency, thereby controls revolution is strained the quantity discharged of hydrophone (5).

The utility model has the advantages that:

Owing to adopted variable-frequency control technique and various detecting sensor, in the time of eliminating rotation reliably and strain the hydrophone operation to the sludge blanket disturbance and satisfy and follow supernatant liquor and discharge the back change of level and the performance of draining.Its level of automation improves greatly, can reach the effect of " unattended, few people's value is examined ", and improve working efficiency.Also can adjust the water inlet of sequencing batch active sludge one-period, aeration, precipitation, water discharge time automatically simultaneously.

Four, description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the controlling party block diagram of Fig. 1.

Five, embodiment

Among Fig. 1: control device (1) is contained in the housing (2), and PLC and variable-frequence governor are contained in the control device (1); Liquid level sensor (6) is contained in rotation and strains on the crest of weir of hydrophone (5); Step-down gear (3) is connected with transmission mechanism (4), and transmission mechanism (4) is strained hydrophone (5) with rotation and is connected; The dark transmitter of mud (7) is contained on the pool wall (8) of straining the pond; Control device (1) is connected with the fast machine (3) that slows down, liquid level sensor (6), the dark transmitter of mud (8) respectively by cable.

After PLC in the control device (1) receives and strains the water instruction, hydrophone (5) operation is strained in rotation, liquid level sensor (6) feeds back to PLC with the liquid level signal that detects, if the level value that liquid level sensor (6) detects is higher, the PLC then controls revolution speed of straining hydrophone (5) falls slowly; If the level value that liquid level sensor (6) detects is lower, PLC then controls revolution to strain the speed of hydrophone (5) fast, so just guaranteed that rotation strains hydrophone (5) and follow the water level operation.

Simultaneously, the mud number of deeply convinceing that the dark transmitter of mud (7) will be strained in the pond feeds back to PLC, and PLC is then according to the signal of gathering and controls revolution is strained the decline degree of depth of hydrophone (5) and anti-interference.If the mud layer of straining in the pond is dark, the last transition that hydrophone (5) is strained in rotation diminishes; If strain the mud layer depth as shallow in the pond (8), the last transition that hydrophone (5) is strained in rotation becomes big.Straining the hydrophone Controlling System controls flexibly to the traffic coverage of straining hydrophone.So both guaranteed that the supernatant liquor that will strain in the pond thoroughly discharged, and also can not cause secondary pollution because of overdrainage; Improved and rotated the working reliability of straining hydrophone (5).

In addition, PLC also can handle the data such as concentration, aeration rate of straining the dissolved oxygen in the pond, so that adjust water inlet in the sequencing batch active sludge one-period, aeration, precipitation, water discharge time, makes it more reasonable.

Among Fig. 2: control power supply → liquid level, the dark feedback signal of mud and other input signal → PLC → output signal → RHVC → step-down gear → transmission mechanism → strain hydrophone.

Liquid level, the dark feedback signal of mud and other input signals, PLC, output signal, RHVC, step-down gear, transmission mechanism is strained hydrophone and is connected with the control power supply.

Signals such as liquid level, mud be dark in straining the pond be input to PLC the time, PLC is defeated by output signal according to the signal of input, RHVC is sent instruction according to the frequency that output signal receives, by step-down gear, transmission mechanism, strain the hydrophone operation.

Claims

Hydrophone is strained in a kind of intelligent rotation, strains hydrophone (5) by control device (1), rotation and forms, and it is characterized in that: it includes PLC and variable-frequence governor, liquid level sensor (6) and the dark transmitter of mud (7), and PLC and variable-frequence governor are contained in the control device (1); Liquid level sensor (6) is contained in rotation and strains on the hydrophone (5); The dark transmitter of mud (7) is contained on the pool wall (8) of straining the pond; Control device (1) is connected with step-down gear (3), liquid level sensor (6), the dark transmitter of mud (7) that rotation is strained on the hydrophone (5) respectively by cable.