Miscellaneous

Water supply scheme of a private house with a storage tank

July 2, 2020

In some cities, SMT due to unsatisfactory technical condition of the central water main, pumping station, etc.. D. Water in private houses and apartments is supplied on schedule. Therefore, residents seek to make a supply of water in small containers - plastic bottles, buckets, etc.. D. If you have money for care, from this inconvenient way of accumulating water, many homeowners try to install a storage tank with a pumping station at home.

Water supply system of a private house with a storage tank - photo.

A water supply system with a storage tank will help for a short time (1 — 5 days), if it is not replenished, does without central water supply, and in cases of unsatisfactory pressure, raise it.

Consider one of the practical schemes of water supply of the house (apartments) with storage tank and pump to the existing piping.

The scheme of water supply of the house with an accumulative tank

Submitted by ??the scheme is easily integrated into the existing piping as in the water supply with one central pipeline, and with several. Its compactness is due to ??using free space above the tank, in which the pump station is suspended on brackets.

Picture 1.

In the picture 1 the scheme of water supply of a private house with two central pipelines consists of:

1 - Grandma 500 liters;
2 - pump;
3 - receiver (membrane tank);
4 - pressure switch;
5 - bronze pentagonal adapter;
6, 17 - pressure gauge;
7 - hose with reinforcing braid;
8 - check valve;
9 - float valve;
10 - American women with external carvings;
11 - American women with female carvings;
12 - bronze transition from the tank to the external thread;
13, 14 - MRN (external thread coupling);
15 - MRV (coupling thread internal);
16 - bronze transition from external to internal thread;
18 - flow meter;
19 - strainer;
20 — 26 shut-off valves.

Suction discharge and distribution line made of polypropylene pipeline and transitions with diameters 32 mm (vsas) and 20 mm.

The principle of operation of the system

Shut-off valves during the analysis of water from the central highway 23, 24 must be closed, and latches 20, 21, 22, 25 in the open position, the voltage at the pumping station is cut off by a circuit breaker. Water enters the tank through the primary filter and the float valve. When you reach a certain level, the valve closes, and to prevent leakage, which can occur if the valve breaks or becomes clogged, the water supply is blocked by a latch 25.

When the water supply to the house is cut off, shut-off valves 20, 21, 22, 25 the taps are closed and opened 23, 24, the power supply to the pump is renewed.

When you open the faucet, water comes from the receiver, and when the pressure drops to the lower limit (1,8 there is) the automation unit includes a pump, which supplies fluid from the tank to the pipeline and membrane tank. The pressure switch will switch off the pump, when the pressure in the injection system is reached 2,8 to go. Fluid consumption is a cyclic process, and the appearance of water in the city power grid will signal the manometer 17.

Consider in detail the important components of the storage device to determine the method of installation and equipment selection criteria.

electrical part

The station motor is powered directly from the electric meter via a circuit breaker.

To protect the pump, rapid de-energization of the engine in cases of unstable power supply or rotor overload, it is desirable to select the machine on 10% more than rated power. For the station engine used in the example, the rated power is 0,77 kw, taking into account the requirements you need to use the machine on 3,85 A ((770 W + 77 W) / 220 V), but the closest parameter is 5 A. You can use a circuit breaker with differential control.

As practice shows, conventional circuit breakers with a close current parameter fully cope with their functions.

Possible options for pipe breeding

The water supply scheme of the house is designed with two central pipelines. They are usually installed at a distance from each other. In this case, one pipe is mounted near the system, and the second is made in the corner between the wall and the ceiling, or in tightening the floor. When choosing an option 1, communications can be closed by a decorative box from GKL (drywall sheet). In the second case in shrinkage the strobe is made, preferably near the wall, the pipe is laid with integral fittings, a protective cover is installed on it and the whole line is hidden under the cement-sand mortar.

Capacity and pumping station

A plastic cylindrical tank with a volume is used to accumulate the tank 0,5 m3, intersection 640 mm and height 1840 mm, with wall thickness 5 mm.

The pumping station consists of:

Nasosa JEX 500 with low noise emission, able to provide pressure in the system to 4 there is. When using a noisy unit in the apartment, conflicts with neighbors may occur, up to litigation.
Receiver on 24 liters. Significantly reduces water hammer on the pump, arising in the process of water analysis, as well as increases engine life.
Special bronze heel end adapter, by means of which there is a switching of all components of station.
Tubes with reinforcing braid, designed to connect the pump and the diaphragm tank.
Automatic unit (pressure switch) for operation of the pump in a certain range of pressure.
Pressure gauge. This device is not a mandatory attribute for the station, but on the basis of its indications it is possible to check tightness of a contour and to adjust, if necessary, automation unit.

Pump station.

The height of the ceiling in the room where it is installed ??described water supply system - 2,5 m. This distance allows you to install a station with dimensions 600 X 400 X 400 over the drive. Brackets from conditioners are used for its fastening, and a rubber hose with a diameter is used as a vibrating gasket 32 mm and length 400 mm, cut lengthwise.

Water supply to the tank

The tank is filled through a plunger-type float valve, consisting of:

pipe with housing and outlet;
plunger with rubber seal;
lever;
float.

The valve of such design is reliable in operation, but can sometimes fail due to foreign objects entering the drain hole or the working space of the plunger, wear of the rubber seal. It is desirable to periodically monitor its work, and after filling the tank of liquid supply to stop the latch 25.

Launch of the water supply system of a private house

A prerequisite for system operation before the pump is started for the first time, in cases of complete emptying of the tank there is the presence of water in the turbine chamber and the suction line. If this requirement is not met, the liquid will not enter the point of analysis, and the pump elements will overheat and fail.

The order of filling the suction line.

Step 1

A plug is unscrewed in the upper part of the turbine housing, and a watering can is inserted in its place (Photo 7).

step 2

Under the case the dry rag for catching of liquid in the course of filling lays down.

step 3

Water from a plastic bottle, not in large portions, fed into the suction line before its end from under the funnel.

step 4

The watering can is removed and the cap is installed.

After these measures, the station is ready for launch.

Vsas can be filled in a reversible way, that is, in the presence of water in the main pipeline, to avoid water hammer on the shovel, smoothly open the latch 23 or 24 and do not close it until the pressure gauge readings 6.

The method of determining the presence of water in the central pipeline

Thanks to the manometer it is easy to control the presence of water in the central highway. It is usually installed after the flow meter, and for its operation shut-off valves 21 must be in the open position. Since the input port of the sensor has a thread 3/8 «, it is connected to the fitting with a bronze adapter (16) with parameters: female thread 3/8 ", external - 1/2 «.

Emergency overflow and drains

To protect against flooding in cases of overfilling, in its upper part there is an emergency overflow, consisting of:

transition diameter 1 inch;
corrugated hose cross section 32 mm;
siphon for a sink;
fastenings for a sewer pipe 50 mm.

In the existing sewerage the tee with assignment under is built in 45 degrees. The siphon outlet is connected to a tee through a rubber diameter transition 32 mm per section 50 mm. For reliability, these components are treated with silicone sealant.

When it is not possible to supply liquid with a pump (breaking, no power supply) the water drains through an emergency drain, placed in front of the non-return valve of the suction line.

At the same time the drain crane 26 is placed as close as possible to the bottom.

Search for leaks

The device is leaking due to:

wear of the sealing gasket of the toilet tank;
damage to the rubber or ceramic seal of the faucet, shut-off valves;
the presence of cracks in the membrane or a fault in the valve spool type receiver;
use of components with defects;
violation of assembly technology.

Signs of leakage in the system:

parsing of water is absent, and the pump is switched on periodically;
when the device is de-energized, the station manometer shows a pressure drop of up to 0 there is.

If the above symptoms appear in the wiring, necessary:

Disconnect the pump station.
Close the valve 23, 24.
Follow the manometer readings 6, if they change, means, the leak is in the pump fittings, suction line, injects the pipeline to these valves, or in the receiver.
If the pressure is constant, open the supply valve (23 or 24) and monitor the values of the manometer. When a leak is detected, we examine the components of the system from the shut-off valves, to the last element of the water supply. The second assignment is checked by the same system. All certain leak nodes must be reviewed or replaced. In the place of occurrence of pipes (if they are hidden in the collection) leakage is difficult to determine, since, usually, materials are laid on the floor, which repel or poorly absorb water: tile, linoleum, laminate, etc.. D. Therefore in such places at installation of system of water supply of the private house it is better to lay integral pipes and to avoid connections..

Automation unit settings

The automation unit consists of a membrane with a working body, contact group, housing, adjusting screws.

Under the action of pressure, the rubber membrane expands or narrows, while its working body switches contacts from the "On" position In the "Off" position At the relay manufacturer's factory, the pressure is set to maintain the pressure 1,8 — 2,8 there is, that is, when achieved 1,8 the pump bar is switched on, a pri 2,8 bar it turns off. Timely audit of automation, which is to clean the inlet (connecting port) and contact surfaces, allows it to work clearly without regulation. But since the relay has control devices, consider, how to switch the unit to another range.

Pressure switch.

If you cover the stud nut № 1 clockwise, the upper response range will increase, scrolling it counterclockwise will reduce this range. Nut № 2 the lower limit of operation is adjusted. To quickly achieve the best result, after minor changes, the results of the adjustment should be checked. The device is very sensitive and each, even a seemingly insignificant setting changes the response limits of the device.

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