CN2133614Y

CN2133614Y - Automatic control unit of water tower pump

Info

Publication number: CN2133614Y
Application number: CN 92204418
Authority: CN
Inventors: 孙刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-18
Filing date: 1992-03-18
Publication date: 1993-05-19
Anticipated expiration: 2002-03-18

Abstract

The utility model discloses an automatic control device for a water tower pump, which can control the water level of the water tower in a certain range, comprising a DC low voltage power supply and an electronic control circuit. The electronic control circuit is a water level detection circuit composed of a piece of universal four-operational amplifier integrated package and a peripheral element, which can detect and display the water level and control the height of the operation of the water pump. The utility model has the advantages of simple circuit, reliable performance, safe use, easy installation, and low cost, which is suitable for a water tower pump, and in particular suitable for the automatic control of a household roof tank pump in countryside. When the utility model is used for the household roof tank pump, a 220V single-phase pump electric motor is adopted, a manual switch is provided, and the motor of the pump can be opened or closed through the manual switch at any moment as occasion requires.

Description

Automatic control unit of water tower pump

The utility model relates to a kind of water tower water pump control device, particularly relates to a kind of automatic controller that can make the cistern water level control water tower water pump of being made up of dc source and electronic control circuit within the specific limits.

The water tower water pump control realizes that with three kinds of modes they are respectively mechanical controllers usually; The electric appliance circuits controller; And computer control unit, according to retrieval, 89205586.3 number utility application discloses a kind of water tower automatic pumping controller, this controller utilizes the normal battle of liquid level relay as electrode, cooperate the time relay, formation such as auxiliary reclay and A.C. contactor, when the water tower spilling water, the rapier conducting, the actuating of relay, water pump stops pumping, wait to delay time and draw water automatically behind the certain hour, the shortcoming of this controller is: water pump is not to determine whether drawing water according to water tower water situation, but regularly draws water, and water tower was cut off the water supply when this just may occur in water use peak, and when the water low ebb, the problem that water pump then draws water as usual.This controller is to make the rapier conducting during by the water tower spilling water in addition, the actuating of relay and water pump is stopped pumping, and this has not only caused waste, but also has increased facilities such as overflow pipe, spillway basin and sewer, thereby has improved the expense that this pumping controller is installed.

The purpose of this utility model provide a kind of can make water tower level keep within the specific limits, performance is safe and reliable, price is low, and is easy for installation, be applicable to water tower, be particularly useful for the water pump automatic controller of home dwelling attic tank.

Water tower water pump controller of the present utility model is made up of low-voltage dc power supply and control circuit two parts, and its solution is: control circuit is with a general four high guaily unit IC, by it respectively with resistance R ₃, probe L forms low water stage detection circuit and and resistance R ₄, probe H forms the high water level detection circuit, realizes the function that detection, demonstration and the control of pump of water level in the water tank are drawn water.

Water tower water pump automatic controller of the present utility model is a low-voltage dc power supply because electronic control circuit uses, so safety.The control circuit of forming with a general four high guaily unit integrated circuit and a little peripheral cell can be realized the detection, demonstration of cistern water level and to the control of pump working, volume is little, price is low, dependable performance, water tank is not cut off the water supply in the time of guaranteeing to accomplish water use peak, and water pump is opened less when the water low ebb, and install simply, expense is low.The drawing explanation:

Fig. 1: the electrical schematic diagram of water tower water pump automatic controller

Fig. 2: the four-stage schematic diagram of controller control of pump work

Below in conjunction with accompanying drawing the utility model is explained in detail:

Shown in Figure 1:

By transformer T, diode D ₁, capacitor C ₁Constitute the low-voltage DC source circuit, the 220V alternating current is by step-down rectifier, filtering, supply control circuit low-voltage direct operating voltage.By resistance R ₃, probe L and ic chip form the low water stage detection circuit, by resistance R ₄, probe H and ic chip are formed the high water level detection circuit.Adhesive and the release of relay J control contactor JCQ.The startup of contactor JCQ control of pump and stopping.Light emitting diode D ₅Be the pump working indicator lamp, when water pump draws water in water tank, light.Light emitting diode D ₄Be the normal indicator lamp of water level, when cistern water level is higher than probe L position, light.

M is equipped with manual electric knife switch in pump motor (for the family expenses attic tank, M can the use single-phase motor) power circuit, so as when unexpected situation occurring, to start or close motor (as will have a power failure, in advance can be with water tank in fills with water).

Shown in Figure 2 is the four-stage of pump process:

Stage one: when cistern water level is lower than probe L position (shown in Fig. 2 a), integrated package 1 pin, 7 pin output high level, 8 pin output high level, the BG1 conducting drives the relay J adhesive, contact J ₁, J ₂Conducting, contactor JCQ adhesive, water pump is connected power supply, draws water to water tank.

Stage two: when cistern water level is higher than low water stage probe L position and when being lower than high water level probe H position (shown in Fig. 2 b), integrated package 1 pin output low level, 7 pin output high level is at diode D ₂, D ₃And capacitor C ₂Effect under, integrated package 8 pin output high level, the BG1 conducting, relay J keeps adhesive, contact J ₁, J ₂Conducting, contactor JCQ adhesive, water pump continues to draw water to water tank, and cistern water level rises.

Stage three: when cistern water level reaches high water level probe H position (shown in Fig. 2 c), integrated package 1 pin and 7 pin output low levels, 8 pin output low levels, BG1 ends, relay J contact J ₁, J ₂Disconnect, contactor JCQ discharges, and the water pump deenergization stops to draw water to water tank, and water tank water was taken out and expired the end of drawing water this moment.

Stage four: along with user's water, cistern water level constantly descends, when water level is lower than high water level probe H (shown in Fig. 2 d), and integrated package 7 pin output high level, 1 pin output low level, 8 pin output low levels, BG1 ends, not adhesive of relay J, contactor JCQ discharges, and water pump is not worked.

After water after a while, cistern water level drops to and is lower than low water stage probe L position (shown in Fig. 2 a), gets back to the stage one again, so goes round and begins again, and cistern water level is controlled between low water stage probe L and the high water level probe H automatically.

Claims

1, a kind ofly forms by low-voltage dc power supply and electronic control circuit, can make the water level maintenance water tower water pump automatic controller within the specific limits in the water tower, of the present utility model being characterised in that: control circuit is with a general four high guaily unit integrated circuit, by it respectively with resistance R ₄, rapier H, resistance R ₃, rapier L and other peripheral cell form the control circuit that detects, shows water tower level, control of pump motor operation.