CN2647837Y

CN2647837Y - Water level controlling device for air-float filter chamber

Info

Publication number: CN2647837Y
Application number: CN 200320109670
Authority: CN
Inventors: 金立人; 王刚; 李明欣
Original assignee: JINQIAO WATER TREAT TECHNOLOGY
Current assignee: JINQIAO WATER TREAT TECHNOLOGY
Priority date: 2003-10-14
Filing date: 2003-10-14
Publication date: 2004-10-13
Anticipated expiration: 2013-10-14

Abstract

The utility model relates to a water level control device for the gas float filtering tank. The utility model arranges an electric pole 3, a high limit poles 1and a lower limit poles 2 for water level in the filtering tank, a control loop consists of a contactor KM1 and KM2, a water level relay SL1 and SL2 and a time relay KT1 and KT2. wherein a signal end of the relay SL1 and SL2 is connected to a high water level pole, the lower water level pole and a common pole, the time relay KT1is utilized to detect the water level signal timely, and send the signal into executing contactor KM1 and KM2, this signal is used for a motor M of a control valve to act within the setting time of KT2, and control water discharge of the valve, so as to make the changed water level be closed to the normal water level gradually and kept at the normal water level through such method.

Description

The Airfloat filtering pond water-level control apparatus

Technical field

The utility model relates to the water level in water pool control device that uses on a kind of water treating equipment, particularly a kind of device that is used to control the water level of Airfloat filtering pond.The utility model comprises: is located at the high and low condensate tank of dehumidifier in the pond, is located at the valve on the rising pipe of pond, and the electric motor that is used to drive valve opening and closing.

Background technology

In the engineering of water treatment, Airfloat filtering pond will in time be discharged the scum silica frost of generation in process of production, sinks to reducing the water quality of water outlet and pollutes filtrate to prevent scum silica frost.The prerequisite of deslagging is that the water level that will guarantee Chi Shui maintains in the normal scope smoothly, makes slagging-off scraper plate energy works better.Therefore must strict control pool inner water position.Be the turnover valve opening that adopts the Artificial Control pond in the prior art, change within allowed band to keep water level in water pool.But because sump area is big, influence factor that flooding quantity changes comparatively complicated (particularly when backwash technique), cause the variation of filter tank water level bigger, therefore the Artificial Control valve opening has suitable difficulty, and the variation of water level has very long retardation time than the valve opening variation, add the simple duplication of labour, the fatigue that easily causes operator is with bored.So Artificial Control is waste of manpower not only, can not guarantee to control water level in the scope of processing requirement.Also useful in the prior art float water-level control apparatus control electrically operated valve opens and closes, and realizes what pond water water level was controlled.But because of the sensitivity of float control device relatively poor, movement response is slower, make the control accuracy of this technical scheme be difficult to guarantee, on the other hand, because motorized valve is the high point with the door open, not only can cause water level variation by a relatively large margin, also can frequently turn round because of motor-operating mechanism, wearing out of acceleration equipment further reduced the reliability of device.

Summary of the invention

The purpose of this utility model provides a kind of can making in the normal range that the filter tank water level remains on processing requirement, can the autocontrol valve aperture, can avoid the water-level control apparatus of valve opening wide variation.

Solution of the present utility model is:

A common electrode is set in inside, filter tank, and respectively establishes an electrode, utilize water, produce corresponding water level control signal as interelectrode conductor at the upper and lower bound of filter tank control water level.A control loop is set simultaneously.Be parallel with the contactor KM1 of the motor M forward rotation of control flowing water Valve in this control loop, control motor M counter-rotational contactor KM2, level relay SL1, level relay SL2, time relay KT1 and another time relay KT2.Wherein: each connects common electrode and high water level electrode or common electrode and low water level electrode respectively the signal end of level relay SL1 and SL2, in contactor KM1 loop, be serially connected with the normally closed contact SL1-1 of level relay SL1, in contactor KM2 loop, be serially connected with the normally closed contact SL2-1 of level relay SL2, in time relay KT1 loop, be serially connected with the normally closed contact KT2-1 of relay K T2, in time relay KT2 loop, be serially connected with the normally opened contact KT1-1 of contactor KT1.

Also can be provided with loop in the utility model, manually switch with transfer lever SA1 between control loop and relay control circuit, to realize control manually in particular cases with the forward and reverse rotation of manual switch control motor M.

Respectively be serially connected with the valve stroke switch in contactor KM1 loop of the present utility model and the KM2 loop and with KM2 and KM1 and with the device of KM1 and KM2 interlocking.Can make device work safer reliable like this.

The utility model is to utilize the electrode of being located at Chi Shuizhong to produce control signal when work, and by level relay SL1 and SL2 output, utilize regularly sensed water level signal of time relay KT1 simultaneously, and send into and carry out contactor KM1 and contactor KM2, the by-pass valve control motor M is action by a small margin in the time limit of being set by time relay KT2, make valve that the variation of little aperture be arranged, and then make aquifer yield produce respective change, make the water level of variation force into and remain on ordinary water-level gradually with this mode.Level relay SL1 or SL2 in the utility model are made of reverser, and just when the change of level overrun, corresponding electrode promptly produces the signal of on-off, and is anti-phase through rly. SL1 or SL2, exports corresponding switch signal.

Compared with prior art the utility model has following advantage:

1, owing in the pond electrode is set, and utilize water in the pond as conductor, its operation precision and sensitivity are high, the precision of the control of can flooding;

2, the control to electrically operated valve detects by timing and moves in limited time and realize, mode changes to force into gradually to make water level, solved the long control difficulty of being brought retardation time between valve event and change of level, therefore its control accuracy is higher, but also can avoid making in the prior art valve open and close amplitude excessive, the disadvantage that the electrically operated valve action is too frequent;

3, device work is very reliable sensitive, can effectively control water level in normal range.

Description of drawings

Accompanying drawing is electric control theory figure of the present utility model.Wherein: M is for driving the electric motor that flowing water Valve opens and closes, 3 is common electrode, 1 and 2 are respectively the electrode of the upper and lower bound of being located at the filter tank water level, KM1 is the contactor that makes control motor M forward rotation in the control loop, KM2 is the counter-rotational contactor of control motor M, SL1 and SL2 are level relay, SL1-1 is the normally closed contact of level relay SL1, KM2-1 and KM2-2 are respectively normally opened contact and the normally closed contact of contactor KM2, SL2-1 is the normally closed contact of level relay SL2 control, KM1-1 and KM1-2 are respectively normally opened contact and the normally closed contact of contactor KM1, KT2-1 is the normally closed contact of time relay KT2, KT1-1 is the normally opened contact of time relay KT1, SA1 is a manual change-over switch, SB1 and SB2 are respectively the hand push button switch, and OF is the general supply air switch of motor M, and SQ1 and SQ2 are respectively the travel switches of the upper and lower bound of electrically operated valve stroke.

Embodiment

The utility model is below in conjunction with the accompanying drawing explanation:

In inside, filter tank a common electrode 3 is set, respectively establishes an

electrode

1 and 2 at the upper and lower bound of filter tank water level.In control loop, be provided with the contactor KM1 that parallel connection is provided with control motor M forward rotation, the counter-rotational contactor KM2 of control motor M, level relay SL1, level relay SL2, time relay KT1, and another time relay KT2, wherein: the signal end of level relay SL1 is receiving

electrode

3 and 1 respectively, the signal end of SL2 respectively receiving electrode 3 itself and 2, in contactor KM1 loop, be serially connected with by the normally closed contact SL1-1 of level relay SL1 control and the normally closed contact KM2-1 that controls by contactor KM2, in contactor KM2 loop, be serially connected with by the normally closed contact SL2-1 of level relay SL2 control and the normally closed contact KM1-1 that controls by contactor KM1, in time relay KT1 loop, be serially connected with normally closed contact KT2-1, in time relay KT2 loop, be serially connected with normally opened contact KT1-1 with relay K T1 control with relay K T2 control.In control loop, also be provided with the loop of switching the forward and reverse rotation of manual switch control motor M with SA1 in addition, wherein also have the switch S B1 and the SB2 of the manually forward and reverse rotation of control motor M.In motor power supply road, also establish the master switch OF of a control motor M.For making the normal trouble-free service of ensuring equipment, on contactor KM1 loop, be serially connected with the normally closed contact KM2-2 of travel switch SQ1 and contactor KM2, and on contactor KM2 loop, be serially connected with the normally closed contact KM1-2 of travel switch SQ2 and KM1, utilize travel switch SQ1 and SQ2 that motor is moved in the working stroke that allows, utilize two normally closed contact KM1-2 and KM2-2 to make two control loops form interlocking simultaneously.Also be provided with hand push button switch S B1 and SB2 in addition in the utility model, to realize manually control when needed.

The utility model principle of work is: rotate forward or backwards with contact KM1-1 and KM2-2 control motor M in the master loop, with the lifting that realizes flowing water Valve or put down.When ordinary water-level, contact SL1-1 and contact SL2-2 all open, and this moment, KM1 and KM2 all were failure to actuate; When water level is in low-water level, contact SL2-1 closure, SL1-1 opens, while is the interior KT1-1 closure of section at the fixed time, produces corresponding signal output, makes the KM2 action, interlocking contact KM2-2 opens, and the KM1 loop is disconnected, simultaneously with main contact KM2-1 closure, make M predetermined time limit of counter-rotating, flowing water Valve is fallen one by a small margin, water level is risen, if when water level still is lower than lower control limit, repeat said process, finally make water level reach in the normal range gradually; When water level was in the high-water place, contact SL2-1 opened, the SL1-1 closure, while is the interior KT1-1 closure of section at the fixed time, produces corresponding signal output, makes the KM2 action, interlocking contact KM1-2 opens, the KM2 loop disconnected, and main contact KM2-1 closure, make motor M just change a predetermined time limit, flowing water Valve is promoted one by a small margin, water level is descended, if when water level still is higher than upper control limit, repeat process, water level is reached in the normal range gradually.The operation time limit of motor M is adjusted by time relay KT2 and is set in the device.

Claims

1, the Airfloat filtering pond water level automatic control device, comprise: be located at the height in the pond, the low-water level proofing unit, be located at the valve on the rising pipe of pond, drive the electric motor M that flowing water Valve opens and closes, it is characterized in that inside, filter tank is provided with a common electrode 3, and respectively establish an electrode 1 and 2 at the upper and lower bound of filter tank water level, be provided with the contactor KM1 that parallel connection is provided with control motor M forward rotation in the control loop, the counter-rotational contactor KM2 of control motor M, level relay SL1, level relay SL2, with time relay KT1, and another time relay KT2, wherein: the signal end of level relay SL1 is receiving electrode 3 and 1 respectively, the signal end of SL2 is receiving electrode 3 and 2 respectively, in contactor KM1 loop, be serially connected with by the normally closed contact SL1-1 of level relay SL1 control and the normally closed contact KM2-2 that controls by contactor KM2, in contactor KM2 loop, be serially connected with by the normally closed contact SL2-1 of level relay SL2 control and the normally closed contact KM1-2 that controls by contactor KM1, in time relay KT1 loop, be serially connected with the normally closed contact KT2-1 of relay K T2, in time relay KT2 loop, be serially connected with the normally opened contact KT1-1 of relay K T1.

2, Airfloat filtering pond water level automatic control device according to claim 1 is characterized in that also being provided with in the device loop with the forward and reverse rotation of manual switch control motor M, manually switches with transfer lever SA1 between control loop and relay control circuit.

3, Airfloat filtering pond water level automatic control device according to claim 1 is characterized in that respectively being serially connected with in contactor KM1 loop and the KM2 loop travel switch and with KM2 and KM1 and with the device of KM1 and KM2 interlocking.