CN2734843Y

CN2734843Y - Bypass constant-pressure automatic water-supply machine

Info

Publication number: CN2734843Y
Application number: CNU2004200738436U
Authority: CN
Inventors: 潘世全
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-02
Filing date: 2004-07-02
Publication date: 2005-10-19
Anticipated expiration: 2014-07-02

Abstract

The utility model discloses a bypass constant-pressure automatic water-supply machine which relates to domestic water-supply equipment comprising an electric water pump, a pressure tank with a pressure switch, water using equipment, a connecting pipeline, a power source and a control circuit of the power source. The water outlet pipe end of the electric water pump is connected with the pressure tank with four connection ports. A flow switch is connected between the connection port b of the pressure tank and the water using equipment. The pressure switch is connected with the connection port c of the pressure tank. A T-union is connected with the water inlet pipe of the electric water pump. The e end of the T-union is connected with the water inlet pipe of the electric water pump, and a pressure maintaining valve is connected between the f end of the T-union and the connection port d of the pressure tank. The g end of the T-union is connected with a water pumping pipe whose water inlet is provided with a bottom valve. After the electric contact point YLK of the pressure switch under the control of the water pressure is connected with the electric contact point LLK of the flow switch under the control of the flow in parallel, and then the two contact points are connected with a power supply loop of the electric water pump in series. The utility model has the advantages that the constancy of the water pressure is high, and the burn of generator because of excess load can't occur in any operating states.

Description

Bypass constant-pressure water feeding system machine

Technical field:

The utility model relates to a kind of supply equipment, the bypass constant-pressure water feeding system machine that particularly a kind of suitable family uses.

Background technology:

In the many rural areas that the tap water facility also is not installed of China, the townlet area, for satisfying people's life, industrial water uses the needs of tap water, develop many household tap water machines, but most of technical schemes are directly to draw water from the well the inside with water pump, its pressure of supply water is very unstable and can not satisfy the needs of a large amount of waters of people, for this reason, the scheme that has is to adopt to build a bigger reservoir, what have adds a pressure vessel, the patent No. provides a kind of pressure switch that has for the household tap water machine of " 02206478.8 ", the small-sized supply equipment of pressure vessel, rural area water intaking automation and the metastable problem of hydraulic pressure have been solved, but it still has the following disadvantages: this household tap water machine is control of pump electric motor starting and stopping only, the water route is not controlled, shown following defective in actual use: 1, the frequent startup of pump motor and stopping when water supply volume is little; 2, pump motor works in overload state during long-time big flow water, burns pump motor easily.

Summary of the invention:

The technical problems to be solved in the utility model is: the hydraulic pressure that existing small-sized supply equipment exists is stable inadequately, when water supply volume is little the frequent startup of pump motor and stop, pump motor works in overload state during long-time big flow water, burn the problem of pump motor easily, provide a kind of stable water pressure higher, water supply volume size no matter, pump motor can frequent starting, can not cause the constant-pressure water feeding system machine of burn-down of electric motor under any duty because of overburden.

The technical scheme that solves its above-mentioned technical problem is: a kind of bypass constant-pressure water feeding system machine, comprise electric pump, the pressurized tank of band pressure switch, watering equipment, connecting line, power supply and control circuit thereof, it is characterized in that: described electric pump is the proportional electric water pump of power input to machine and pump head, output at described electric water pump is connected with a pressurized tank, have four connectors on the pressurized tank, electric water pump is by this pressurized tank and pressure switch, flow switch, pressure maintaining valve communicates simultaneously, the outlet pipe of electric water pump links to each other with pressurized tank connector a, be connected with a flow switch between pressurized tank connector b and the watering equipment, pressure switch links to each other with the connector c of pressurized tank, be connected with a tee junction at the water inlet pipe place of electric water pump, the e end of this tee junction links to each other with the water inlet pipe of electric water pump, be connected with a pressure maintaining valve between the connector d of its f end and pressurized tank, the g termination drinking-water pipe of tee junction, the water inlet of drinking-water pipe is equipped with bottom valve, be subjected to hydraulic pressure control pressure switch electric contact YLK be serially connected in the current supply circuit of electric water pump after the electric contact LLK of the flow switch that is subjected to flow-control is in parallel.

The proportional electric water pump of described power input to machine and pump head is meant: " Scroll-tupe clear water electrodynamic pump " or " slide type clear water electrodynamic pump " or " gear pump " or " plunger displacement pump ".

The bypass constant-pressure water feeding system machine of the utility model is compared with above-mentioned household tap water machine, has following beneficial effect:

1, stable water pressure height:

Adopt band " pressurized tank of pressure switch " in the supply channel of the utility model bypass constant-pressure water feeding system machine, should " pressurized tank " be used for water storage and connect pressure switch, " pressure switch " is used to set water supply machine and supply channel initial water pressure, makes watering equipment enter upstate at any time; Between pressurized tank and watering equipment, be connected with the flow switch that is used to detect with water state, adopt " pressure maintaining valve " to be used to set water supply machine and the highest hydraulic pressure of supply channel, prevent that the too high and pump motor of hydraulic pressure from entering overload state, thereby, can effectively control the hydraulic pressure of pipeline, make the hydraulic pressure all-the-time stable between predefined certain low hydraulic pressure and a certain high hydraulic pressure.

2, water supply volume size no matter, pump motor can frequent startings and are stopped, and can effectively prolong service life of equipment:

Owing to be subjected in electric contact YLK and the current supply circuit that is serially connected in electric water pump after the electric contact LLK of the flow switch that is subjected to flow-control is in parallel of pressure switch of hydraulic pressure control, take turns to operate, no matter pump motor is in original state, still big flow water, low discharge all can frequent startings with water state and stopped, and can effectively prolong service life of equipment.

3, under any duty, can not cause burn-down of electric motor because of overburden.

Electric water pump of the present utility model adopts as " Scroll-tupe clear water electrodynamic pump "; power input to machine and the proportional water pumps of pump head such as " slide type clear water electrodynamic pumps "; input power is bigger; hydraulic pressure is bigger; lift is bigger; otherwise; when hydraulic pressure reduces (containing flow strengthens); lift is also little; input power also reduces (referring to Fig. 4; Fig. 5); in the water supply loop of the present utility model; electric water pump is by having a on it; b; c; the pressurized tank and the pressure switch of four connectors of d; flow switch; pressure maintaining valve communicates simultaneously; under various duties; pressure switch; flow switch; pressure maintaining valve plays the protective effect of controlled pressure or pressure release respectively, makes electric water pump can not cause burn-down of electric motor because of overburden under any duty.

Its course of work and principle are as follows:

1), original state: when the closed connection of K1 power supply, voltmeter V instructed voltage, power supply indicator ZD1 is bright, flow switch is anhydrous to flow through disconnection, and anhydrous or hydraulic pressure is lower than setting value, the electric contact YLK closure of pressure switch in the pressurized tank, pump motor gets electric operation to the pressurized tank internal pump water, pressure switch detects hydraulic pressure and reaches its electric contact YLK disconnection of setting value back, and pump motor shuts down, and the water supply machine enters dormant state;

2), big flow water state: when the watering equipment standard-sized sheet entered big flow water, the electric contact YLK of pressure switch, the electric contact LLK of flow switch be closure simultaneously, and pump motor enters big flow, rated power duty;

3), the low discharge water state: the user is when low discharge (as washing machine, wash one's hands, have a bath etc.) water, and pressure switch surpasses its electric contact of setting value YLK and disconnects, the electric contact LLK closure of flow switch, pump motor enters low discharge, high pressure duty; When pressure was increased to the pressure maintaining valve setting value, pressure maintaining valve was opened, and the part current are back to low hydraulic pressure district through pressure maintaining valve, and restriction hydraulic pressure further raises, and prevents that pump motor from entering overload state and causing burn-down of electric motor.

4, simple structure, making are easy to maintenance: this product configurations is simple, need not to set up large-scale water tank, and low, the used components and parts of cost all are commercially available, and make easy to maintenance.

Description of drawings:

Fig. 1～Fig. 2: the bypass constant-pressure water feeding system machine structural representation of the utility model;

Wherein, Fig. 1-internal construction, Fig. 2-product design

Fig. 3: circuit theory schematic diagram of the present utility model;

Fig. 4: the flow～lift and the flow～power input to machine performance diagram of " electric water pump that power input to machine and pump head are proportional " that the utility model adopts;

Fig. 5: the flow～hydraulic pressure output characteristic curve figure of " electric water pump that power input to machine and pump head are proportional " that the utility model adopts.

Among the figure, 10 is sanitary of water sources, and 11 is power outlet, and 12 is leakage switch, the 13 bi-colour LED (ZD for connection of expression motor power and machine operation ₁The expression power connection, ZD ₂The expression machine operation), 14 (V) are voltmeter, and 15 are water supply machine casing.

Below, the technical characterictic to the bypass constant-pressure water feeding system machine of the utility model is further described in conjunction with the accompanying drawings and embodiments.

The specific embodiment:

A kind of bypass constant-pressure water feeding system machine, comprise electric pump, the pressurized tank of band pressure switch, watering equipment, connecting line, power supply and control circuit thereof, described electric pump is a Scroll-tupe clear water electrodynamic pump 6, be connected with one at the water outlet pipe end of Scroll-tupe clear water electrodynamic pump 6 and have a on it, b, c, the pressurized tank 2 of four connectors of d, Scroll-tupe clear water electrodynamic pump 6 is by this pressurized tank 2 and pressure switch 1, flow switch 8, pressure maintaining valve 4 communicates simultaneously, the outlet pipe of electric water pump 6 links to each other with the connector a of pressurized tank 2, be connected with a flow switch 8 between pressurized tank connector b and the watering equipment 9, pressure switch 1 links to each other with the connector c of pressurized tank 2, be connected with a tee junction 4 at the water inlet pipe place of electric water pump 6, the e end of this tee junction links to each other with the water inlet pipe of electric water pump 6, be connected with a pressure maintaining valve 3 between the connector d of its f end and pressurized tank 2, the g termination drinking-water pipe of tee junction, the water inlet of drinking-water pipe is equipped with bottom valve 5, is subjected in electric contact YLK and the current supply circuit that is serially connected in Scroll-tupe clear water electrodynamic pump 6 after the electric contact LLK of the flow switch 8 that is subjected to flow-control is in parallel of pressure switch 1 of hydraulic pressure control (referring to Fig. 1, Fig. 2, Fig. 3).

As a kind of conversion of the utility model embodiment, described electric pump can also adopt other as slide type clear water electrodynamic pump, gear pump, plunger displacement pump and so on power input to machine and the proportional electric water pump of pump head.

The effect of described bottom valve 5 is to prevent to draw water pipeline and electric water pump water leakage when quitting work, cause water pump diversion difficulty or can not diversion, bottom valve 5 can be a metal material, it also can be plastic material, when bottom valve 5 is plastic material, between the outlet pipe of Scroll-tupe clear water electrodynamic pump 6 and pressurized tank connector a, can install a flap valve 7 additional, prevent that inlet pipeline and electric water pump from bearing hydraulic pressure when quitting work.

Claims

1, a kind of bypass constant-pressure water feeding system machine, comprise electric pump, the pressurized tank of band pressure switch, watering equipment, connecting line, power supply and control circuit thereof, it is characterized in that: described electric pump is the proportional electric water pump of power input to machine and pump head, be connected with one at the output of described electric water pump and have a on it, b, c, the pressurized tank (2) of four connectors of d, electric water pump is by this pressurized tank (2) and pressure switch (1), flow switch (8), pressure maintaining valve (4) communicates simultaneously, the outlet pipe of electric water pump (6) links to each other with pressurized tank connector a, be connected with a flow switch (8) between pressurized tank connector b and the watering equipment (9), pressure switch (1) links to each other with the connector c of pressurized tank, be connected with a tee junction (4) at the water inlet pipe place of electric water pump (6), the e end of this tee junction (4) links to each other with the water inlet pipe of electric water pump (6), be connected with a pressure maintaining valve (3) between the connector d of its f end and pressurized tank, the g termination drinking-water pipe of tee junction, the water inlet of drinking-water pipe is equipped with bottom valve (5), be subjected to hydraulic pressure control pressure switch (1) electric contact YLK be serially connected in the current supply circuit of electric water pump (6) after the electric contact LLK of the flow switch that is subjected to flow-control (8) is in parallel.

2, a kind of bypass constant-pressure water feeding system machine according to claim 1 is characterized in that: the proportional electric water pump (6) of described power input to machine and pump head is meant: " Scroll-tupe clear water electrodynamic pump " or " slide type clear water electrodynamic pump " or " gear pump " or " plunger displacement pump ".