CN2918803Y

CN2918803Y - Electronic automatic control water pump

Info

Publication number: CN2918803Y
Application number: CN 200620103777
Authority: CN
Inventors: 陈仁德
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-19
Filing date: 2006-05-19
Publication date: 2007-07-04
Anticipated expiration: 2016-05-19

Abstract

The utility model relates to an electronic self-controlled water pump, comprising a motor, a pump body and an electronic control circuit. A pressure sensor and a temperature sensor are arranged in a pump cavity; a flow switch is arranged in the flow passage of the pump; an LCD screen and an input key are arranged on the shell of the pump; by adopting the microcontroller circuit, the electronic control circuit can achieve precise pressure control though the pressure sensor and control circuit and can adjust conveniently through the input key; combined with the temperature sensor and flow switch, the utility model achieves overload and water-break protection. Besides, an airtight air chamber cover provided with a rubber pocket is positioned out of the pump cover, and a flow regulating valve is arranged in the water inlet channel of the pump body, the cooperation of the rubber pocket and the flow regulating valve achieves the functions of flow regulation and water pressure stabilization. The utility model has the advantages of precise control, water pressure stabilization and self-protection.

Description

A kind of electric initiative control portable water pump

Technical field

The utility model relates to water pump, particularly to the improvement of electric water pump.

Background technique

The electric water pump that uses in order to realize automatic control, is provided with pressure controller in pipeline at present, the low and setting value when hydraulic pressure, and pressure controller is connected the power supply of pump motor, pump working; When hydraulic pressure reaches the setting value upper limit, pressure controller cuts off the power supply of pump motor, and water pump quits work, and realizes the purpose of control automatically.But prior art can't realize control automatically in situations such as motor appearance heating, overloads, and owing to be by mechanical adjustment pressure, to low, the adjusting trouble of control accuracy of hydraulic pressure.

The model utility content

The utility model purpose be to provide the control of a kind of hydraulic pressure accurately, regulate easyly, and situations such as heating, overload occur at motor and realize the water pumps of control automatically, with convenient use.

Scheme of the present utility model is: a kind of electric initiative control portable water pump, comprise motor, the pump housing and electronic control circuit, in pump chamber, be provided with pressure transducer, temperature transducer, in the runner of pump, also be provided with flow switch, each sensor and flow switch are electrically connected with the respective input of electronic control circuit respectively, the output terminal of electronic control circuit is electrically connected with motor through relay, on housing, also be provided with liquid crystal display panel and input button, be connected with set input with the demonstration output terminal of electronic control circuit respectively.

Described electronic control circuit adopts single chip circuit.

Outside pump housing end cap, be provided with airtight air chamber cover, be provided with leather bag in the air chamber cover, form former and later two air chambers, offer through hole on the pump housing end cap, be communicated with rear gas chamber.

Be provided with flow control valve in the pump housing intake tunnel, this flow control valve comprises valve plug, spring, and system is provided with valve opening in the intake tunnel, and valve plug is by the inboard of spring roof pressure at valve opening.

The utility model has the advantages that: owing in pump chamber, be provided with pressure transducer and temperature transducer, also be provided with flow switch in the runner,, can realize the accurate control of pressure, flow by control circuit, and, when motor overheating, can protect automatically in addition by the convenient adjustment of input button; In addition, during work, the water of waterexit end is by the air in the leather bag compression rear gas chamber, and pressurized air acts on the water outlet current conversely; In intake tunnel, flow control valve is subjected to the effect of the inside and outside differential water pressures size of pump chamber, the water inlet aperture of control valve bore, and the effect of regulating flow, stablizing hydraulic pressure is played in above two-part acting in conjunction.Compared with prior art, the utlity model has hydraulic pressure, flow control accurately, stable, regulates easy, the advantage of protecting automatically.

Description of drawings

The utility model is described in further detail with embodiment with reference to the accompanying drawings below.

Fig. 1 is a structure sectional view of the present utility model.

Fig. 2 is an A-A direction sectional view among Fig. 1.

Fig. 3 is an electric theory diagram of the present utility model.

Mark among the figure: 1 air chamber cover, 2 leather bags, 3 pump housings, 4 impellers, 5 temperature transducers, 6 pressure transducers, 7 flow switches, 8 motors, 9 liquid crystal display panel, 10 control circuit boards, 11 input buttons, 12 valve plugs, 13 springs, 14 power supplys, 15 single chip circuits, 16 relays; 31 pump housing end caps wherein, 32 rear gas chamber, air chambers before 33,34 water intakes.

Embodiment

As shown in Figure 1, embodiment's electric initiative control portable water pump comprises motor 8, the pump housing 3 and electronic control circuit, is provided with pressure transducer 6 and temperature transducer 5 at the water outlet side of pump chamber, also is provided with flow switch 7 in the runner of water outlet.

Outside pump housing end cap 31, be provided with airtight air chamber cover 1, be provided with leather bag 2 in the air chamber cover 1, air chamber 33 and rear gas chamber 32 before forming, preceding air chamber 33 is a confined space, offers through hole on the pump housing end cap 31, is communicated with rear gas chamber 32.

In conjunction with Fig. 2, be provided with flow control valve in the pump housing intake tunnel, this flow control valve comprises valve plug 12, spring 13, and system is provided with valve opening in the intake tunnel, and valve plug 12 is by the inboard of spring 13 roof pressures at valve opening.

In housing, be provided with control circuit board 10, also be provided with liquid crystal display panel 9 and input button 11 on the surface of shell.

In conjunction with Fig. 3, embodiment's control circuit adopts single chip circuit 15, pressure transducer 6 is connected with single chip circuit 15 corresponding pressure, temperature, flow control input end respectively with temperature transducer 5 and flow switch 7, and the output terminal of single chip circuit 15 is electrically connected with motor 8 through relay 16.

Panel is provided with liquid crystal display panel 9 and input button 11, and liquid crystal display panel 9 is connected on the demonstration output terminal of single chip circuit 15, and the set input of input button 11 and single chip circuit 15 is connected, and is used to import setup parameter.

Temperature transducer 5 adopts thermistor; Pressure transducer 6 adopts the pressure-sensitive foil gauge of semiconductor; Flow switch 7 adopts valve block to drive the form of sensitive switch.

More than each sensor and switch be existing common component.

Single chip circuit is common known technology, and its working principle no longer describes in detail.

During work, pressure transducer 6 and temperature transducer 5 in pump chamber are input to single chip circuit 15 with signal, in order to detect the temperature of hydraulic pressure and motor, when being lower than under the setting value, hydraulic pressure prescribes a time limit, single chip circuit 15 output signals, by relay 17 and 8 work of controllable silicon 16 control motors, water pump draws water.

Prescribe a time limit when hydraulic pressure is higher than on the setting value, single chip circuit 15 stops output signal, and motor 8 quits work.

Too high when motor 8 temperature, temperature transducer 5 is input to single chip circuit 15 with signal, and single chip circuit 15 stops output signal, and motor 8 quits work, and plays a protective role.

When water flow less than certain value or cut off the water supply, flow switch 7 actions are input to single chip circuit 15 with signal, single chip circuit 15 stops output signal, motor 8 quits work, and plays a protective role.

The water of waterexit end is worked as water pressure fluctuations by the air in the leather bag 2 compression rear gas chamber 33, and moment, pressurized air acted on the water outlet current conversely when reducing, and improved hydraulic pressure; During hydraulic pressure moment rising, the air in the rear gas chamber 33 is compressed, and absorbs energy, plays the effect of steady pressure.

In intake tunnel, flow control valve is subjected to the effect of the inside and outside differential water pressures size of pump chamber, the water inlet aperture of control valve bore.Owing to be negative pressure in the pump chamber during pump working, when differential water pressures was big inside and outside the pump chamber, valve plug 12 was pushed open by current, and the increase of latus rectum augmented flow reduces to help stablizing hydraulic pressure otherwise reduce flow.

The effect of regulating flow, stablizing hydraulic pressure is played in above two-part acting in conjunction.

By the effect of single chip circuit, realized the automatic work of water pump, made things convenient for use.

Claims

1. electric initiative control portable water pump, comprise motor (8), the pump housing (3), and electronic control circuit, it is characterized in that: in pump chamber, be provided with pressure transducer (6), temperature transducer (5), in the runner of pump, also be provided with flow switch (7), each sensor and flow switch (7) are electrically connected with the respective input of electronic control circuit respectively, the output terminal of electronic control circuit is electrically connected with motor (8) through relay (16), on housing, also be provided with liquid crystal display panel (9) and input button (11), be connected with set input with the demonstration output terminal of electronic control circuit respectively.

2. electric initiative control portable water pump as claimed in claim 1 is characterized in that: described electronic control circuit adopts single chip circuit (15).

3.. electric initiative control portable water pump as claimed in claim 1, it is characterized in that: outside pump housing end cap (31), be provided with airtight air chamber cover (1), be provided with leather bag (2) in the air chamber cover (1), form former and later two air chambers, pump housing end cap offers through hole on (31), is communicated with rear gas chamber (32).

4. as claim 1 or 3 described electric initiative control portable water pumps, it is characterized in that: be provided with flow control valve in the pump housing intake tunnel, this flow control valve comprises valve plug (12), spring (13), and system is provided with valve opening in the intake tunnel, and valve plug (12) is by the inboard of spring (13) roof pressure at valve opening.