CN201433423Y - A box-type pipe network superimposed pressure water supply equipment - Google Patents

Abstract

A tank-type pipe network pressure-superposed water supply device comprises a municipal pipe network water inlet manifold, a municipal pipe network water outlet manifold and a water tank, and is characterized in that the water tank is communicated with the municipal pipe network water inlet manifold by the water inlet pipe and the water outlet pipe of the water tank, the municipal pipe network water inlet manifold between the water inlet pipe and the water outlet pipe of the water tank is connected with a first check valve, the water outlet pipe of the water tank is provided with a second checkvalve, at least one group of switching mechanisms for adjusting the water supply of the water tank and the direct water supply of the municipal pipe network are connected between the municipal pipe network water inlet manifold and the municipal pipe network water outlet manifold, and a connecting pipe connected with a booster pump and a third check valve is connected with the switching mechanism.The utility model utilizes the pressure of fluid to act on the first check valve, the second check valve and the third check valve to realize the switch of the water supply of the water tank and thedirect water supply of the municipal pipe, is free from the electric control device, and has less equipment investment and lower failure rate.

Description

A box-type pipe network superimposed pressure water supply equipment

technical field

The utility model belongs to the field of municipal water supply devices, in particular to a control system that simplifies the switching between pipe network water supply and water tank water supply. The box-type pipe network superimposed water supply equipment for automatic replacement of water tank water supply.

Background technique

The traditional automatic water supply equipment is a secondary pressurized water supply equipment with a pool as the water source, and relies on high-level water tanks or low-level air pressure tanks to maintain pressure when shutting down. This secondary pressurized water supply equipment has a simple structure, and its disadvantages are poor sanitation and the water source of the pool is easily polluted.

The pipe network superimposed water supply equipment that has emerged in recent years directly uses the municipal pipe network as the water source, pressurizes the water supply on the basis of the municipal tap water pressure, and makes up as much as the difference, which has two advantages of sanitation and energy saving. However, the usual pipe network superimposed water supply equipment is limited by the water supply of tap water, and places with a lot of water cannot meet the demand, and supplementary water sources must be configured. Therefore, water supply equipment with closed water tanks and pipe network superimposed pressure came into being.

However, the configuration of superimposed pipe network water supply equipment that uses closed water tanks as supplementary water sources is relatively complicated in configuration, mainly because the switching between water supply from water tanks and water supply from tap water pipe networks requires the operation of electric valves or similar mechanisms, which not only increases hardware costs, but also increases equipment failure rate.

Utility model content

The technical problem to be solved by the utility model is to provide a box-type pipe network superimposed water supply equipment that does not require an electric control device and has a low failure rate of equipment investment.

The technical problem to be solved by the utility model can be realized through the following technical solutions:

A box-type pipe network superimposed water supply equipment, including municipal pipe network inlet and outlet main pipes and a water tank, characterized in that: the water tank is respectively connected through the water tank inlet and outlet pipes and the municipal pipe network water inlet main pipe, and the water tank inlet and outlet The main water inlet pipe of the municipal pipe network between the water pipes is connected with a first check valve, and the outlet pipe of the water tank is provided with a second check valve; the main water inlet pipe of the municipal pipe network and the main water outlet pipe of the municipal pipe network are connected There is at least one set of switching mechanisms for adjusting the water supply of the water tank and the direct water supply of the municipal pipe network: a connecting pipe connected with a booster pump and a third check valve.

On the above basis, the utility model can make the following improvements:

At least one inspection valve is also connected to the connecting pipe of the switching mechanism, and the inspection valve is located in front of the booster pump and/or behind the check valve in the connecting pipe.

The place where the water inlet pipe of the water tank is connected to the water tank is equipped with a liquid level switch.

The water inlet main pipe of the municipal pipe network is provided with a water inlet pressure sensor, which is located between the first check valve and the outlet pipe of the water tank.

A water outlet pressure sensor is provided at the outlet of the municipal water outlet main pipe.

A main water inlet valve is provided at the water inlet of the municipal pipe network water inlet.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The utility model is used to adjust the switching mechanism of the water tank water supply and the municipal direct water supply through the change of the fluid (water) pressure to be installed on the municipal pipe network water inlet main pipe, the water tank outlet pipe and the connecting pipes of each group of switching mechanisms The first non-return valve, the second non-return valve and the third non-return valve can be realized without electric control device, the equipment investment is small, and the failure rate of the utility model is reduced at the same time;

(2) A plurality of inspection valves are installed on the connecting pipe of the switching mechanism of the utility model. Closing one or more inspection valves can facilitate partial inspection of the water supply equipment, while other parts can continue to work without being affected; close all inspection valves Then the whole water supply equipment model can be overhauled; and the utility model can increase or decrease the number of switching mechanisms according to the actual situation, which can not only improve the efficiency of water supply, but also prevent the whole water supply equipment from failing due to a failure of one of the switching structures. work or only one way to get water;

(3) The liquid level switch that the water inlet pipe of the water tank of the present utility model is provided with can be opened or closed automatically according to the water level in the water tank, to ensure that enough water is stored in the water tank;

(4) The water inlet pressure sensor and the water outlet pressure sensor arranged on the water inlet main pipe of the municipal pipe network and the water outlet pipe of the municipal pipe network of the utility model can allow the staff to obtain the pressure situation of the water supply equipment in real time. The corresponding measures can be taken in time to ensure the safety of water supply.

Description of drawings

Accompanying drawing is the structural representation of the utility model.

Detailed ways

A box-type pipe network superimposed water supply equipment as shown in the accompanying drawings is an embodiment of the present utility model, which includes a water tank 1, a municipal pipe network water inlet main pipe 2 and a municipal pipe network outlet water main pipe 3, and the water tank 1 enters through the water tank. The water pipe 4 and the water outlet pipe 5 of the water tank are communicated with the main water inlet pipe 2 of the municipal pipe network; wherein, the water inlet of the main water inlet pipe 2 of the municipal pipe network is provided with a main water inlet valve 16, and the middle position is connected with the first check valve 6 and the inlet valve. The water pressure sensor 14, the first check valve 6 is located between the water tank inlet pipe 4 and the water tank outlet pipe 5, the water inlet pressure sensor 14 is located between the first check valve 6 and the water tank outlet pipe 5; the municipal pipe network outlet main pipe 3 There is a water outlet pressure sensor 15, which is located in front of the connection between the two sets of switching mechanisms and the municipal pipe network outlet main pipe 3; a liquid level switch 13 is installed at the water tank inlet pipe 4 connected to the water tank, and the water tank outlet pipe 5 is provided with a second check valve 7. Two sets of switching mechanisms for adjusting the water supply of the water tank and the direct municipal water supply are connected between the main water inlet pipe 2 of the municipal pipe network and the main water outlet pipe 3 of the municipal pipe network.

The structure of each group of switching mechanisms is as follows, it includes a connecting pipe 8, the two ends of the connecting pipe 8 are respectively connected to the municipal pipe network water inlet main pipe 2 and the municipal pipe network outlet water main pipe 3, and the connecting pipe 8 is connected with a booster pump 9 And the 3rd check valve 10, in the front of the booster pump 9 and the rear of the 3rd check valve 10, all are provided with the service valve 11,12 that conveniently closes each group switching mechanism. The two sets of switches are independently connected to the main water inlet pipe of the municipal pipe network and the main water outlet pipe of the municipal pipe network, for example, they can be arranged in parallel with each other.

The water source of the municipal pipe network flows into the water tank through the main water inlet valve 16 one way through the liquid level switch 13, and the other way through the first check valve 6 into the suction port of the booster pump 9 of the two switching mechanisms; The two check valves 7 also flow into the suction ports of two groups of booster pumps 9, and the outlet of the booster pumps 9 is connected to the water outlet main pipe 3 through the third check valve 10 and the inspection valve 12.

The working conditions of the utility model are as follows: when the municipal pipe network supplies water normally, the municipal pipe network water inlet main pipe 2 is opened, and the tap water is injected into the water tank 1 through the liquid level switch 13 all the way, and flows into the two groups of switching mechanisms through the first check valve 6 all the way. The suction port of the booster pump 9, and there are two water sources connected to the suction port of the booster pump 9, one is supplied by the pipe network, and the other is supplied by the water tank. After the booster pump is turned on, there are three states of drawing water:

(1) Separate water supply of the pipe network: when the municipal water pressure at the main water inlet pipe of the municipal pipe network is greater than the water pressure stored in the water tank, the second check valve is closed and the first check valve is opened. At this time, the pressure of the tap water pipe network is normal for water supply , the box-type pipe network superimposed water supply equipment is in the superimposed water supply state;

(2) The pipe network and the water tank supply water at the same time: when the municipal water pressure of the municipal pipe network inlet main pipe is equal to the water storage pressure of the water tank, the second check valve is opened, and the first check valve is also opened. At this time, the tap water pipe network The water supply pressure has dropped significantly;

(3) Separate water supply for the water tank: When the pressure at the inlet of the booster pump of the two sets of switching mechanisms is lower than the water storage pressure of the water tank, the second check valve is opened and the first check valve is closed. At this time, the water supply pressure of the tap water pipe network drops greatly Large, it is already lower than the storage water pressure of the water tank, or the main water inlet valve has been closed.

The booster pumps in the above three situations are all in a normal operating state. Through the feedback signal of the water storage pressure sensor, the electronic control system controls the speed of the water pump, and always maintains constant pressure water supply until the water level of the water tank drops to the level sensor. The pump is safely stopped while preventing negative pressure from occurring in the entire pipeline.

Claims (6)

1, a kind of box network pressure-superposition water supply equipment, comprise city planting ductwork water-in and water-out house steward and water tank, it is characterized in that: described water tank is communicated with by water tank inlet tube and outlet tube and city planting ductwork water inlet manifold respectively, city planting ductwork water inlet manifold between the water tank inlet tube and outlet tube is connected to first flap valve, and described radiator drain is provided with second flap valve; Be connected with at least one group between described city planting ductwork water inlet manifold and the city planting ductwork outfall sewer and be used for the switching mechanism that regulating tank supplies water and directly to supply water with city planting ductwork: in the middle of be connected to the tube connector of booster pump and the 3rd flap valve.

2, box network pressure-superposition water supply equipment according to claim 1 is characterized in that: also be connected at least one service valve in the described switching mechanism tube connector, service valve is positioned at tube connector the place ahead of booster pump and/or the rear of flap valve is set.

3, box network pressure-superposition water supply equipment according to claim 2 is characterized in that: described tank inlet pipe connects the water tank place one liquid-level switch is housed.

4, box network pressure-superposition water supply equipment according to claim 3 is characterized in that: described city planting ductwork water inlet manifold is provided with an intake pressure sensor, and it is between first flap valve and radiator drain.

5, box network pressure-superposition water supply equipment according to claim 4 is characterized in that: described city planting ductwork outfall sewer exit is provided with a discharge pressure sensor.

6, box network pressure-superposition water supply equipment according to claim 5 is characterized in that: the water inlet of described city planting ductwork water inlet manifold is provided with a water inlet main valve.

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