1. Product overview:

 

Non-negative pressure water supply equipment is a complete set of water supply equipment developed on the basis of air pressure water supply equipment that can be directly connected to the tap water pipe network without any side effects on the tap water pipe network. It can make full use of the pressure of the tap water pipe network to supply water directly or indirectly, avoiding secondary waste of energy and secondary pollution of water quality, greatly saving infrastructure investment and shortening the construction period. The traditional water supply method is inseparable from the water in the reservoir, which is generally supplied by the tap water pipe network. In this way, the water under pressure becomes zero when it enters the pool, causing a lot of waste of energy.

  

When the non-negative pressure water supply equipment is put into use normally, the water from the municipal pipe network enters the non-negative pressure steady flow tank, and the air in the tank is discharged from the exhaust valve in large quantities. When the air is exhausted, the floating ball in the valve is floated by removing water, and the drive plug is moved to the closed position. The exhaust port is slowly closed to stop the exhaust to prevent water from flowing out. When the water flow in the steady flow tank is normally transported, if there is a small amount The air accumulates in the valve to a considerable extent, the water level in the valve drops, and the float ball drops accordingly. At this time, the air is discharged from the exhaust hole.

  

During the normal operation of the non-negative pressure water supply equipment, when the municipal pipe network water supply is insufficient, the water in the municipal water inlet pipe is empty, or the water pressure in the steady flow tank is lower than the atmospheric pressure, the water level in the steady flow tank drops, and the float ball drops accordingly. , Driving the plug to open, sucking in air, keeping the atmospheric pressure in the steady flow tank, so as not to produce negative pressure on the municipal pipe network.

  

When the pressure in the municipal pipe network is lower than the set pressure required by the user, the water pump will operate with variable frequency speed regulation to ensure that the pressure of the user's pipe network meets the user's water requirements. The higher the water pressure in the municipal pipe network. The lower the speed of the pump, the lower the water pressure of the municipal pipe network, and the higher the speed of the pump. When the water supply pressure of the municipal pipe network reaches the user's requirement, the non-negative pressure water supply equipment automatically stops working, and the water from the municipal pipe network is directly supplied to the user through the bypass pipe.

  

When the municipal pipe network stops water, the water level in the steady flow tank gradually drops. When the water level drops to a low level, the level gauge on the steady flow tank sends a stop signal, and the non-negative pressure water supply equipment automatically stops running and displays a water shortage protection signal .

When the power grid is out of power, the non-negative pressure water supply equipment is shut down, and the water of the municipal pipe network is directly supplied to the user from the bypass pipe of the WB type non-negative pressure water supply equipment.

  

 

2. Product features:

1. No need to build a pool, energy saving and capital saving:

The non-negative pressure water supply equipment is economical and hygienic, and the energy-saving effect is significant. Practice has proved that the use of intelligent non-negative pressure steady flow water supply equipment can save more than 50% of the cost of new pools, which can save 20% to 40% compared with other water supply equipment.

2. Easy to install and save floor space:

The non-negative pressure water supply equipment can be equipped with a horizontal steady flow tank or a vertical steady flow tank. The two kinds of steady flow tanks have different characteristics: the horizontal steady flow tank occupies a small space: the vertical steady flow tank occupies a small area, and the manufacture of the steady flow tank.

3. Wide range of uses and strong adaptability:

The non-negative pressure water supply equipment can be used as domestic water supply, fire water supply, and any type of water pump can be configured. When the equipment is used for fire fighting, it should be equipped with a fire water pump.

4. Full-featured, high degree of can only:

The non-negative pressure water supply equipment adopts man-machine frequency conversion control technology, with soft start, with overload, short circuit, overvoltage, undervoltage, phase loss, overheating and stall protection functions. Signal alarm, self-checking, fault judgment, etc. under abnormal conditions, and automatic adjustment of water supply flow according to the level of water consumption.

5. Reliable product quality:

The accessories used in the non-negative pressure water supply equipment have been screened by many manufacturers and have reliable quality assurance. They are key components in the product.

  

 

3. Functional characteristics of non-negative pressure water supply equipment:

1. Two working methods:

Automatic working mode: The automatic mode is used as a working mode under the normal water supply state. Generally speaking, when the customer selects this method after normal water supply, when working in automatic mode, all the different water supply requirements of the pipe network will be effectively controlled by the non-negative pressure water supply equipment to adapt to multiple functions jobs.

Manual working mode: This mode of operation is an emergency setting for the user when the automatic working mode fails. This working mode completely adopts a simple starting mode, which directly starts and stops any pump on the operation panel The motor is generally only used in the case of automatic failure or debugging.

2. It is easy to integrate into the intelligent management system. The main components adopt the components. The whole system has high reliability and anti-interference. Its built-in standard serial communication port (RS485) makes the communication between the system and the computer very convenient. .

3. Water level protection function, when the water tank water level is lower than the set water level, the system automatically protects and shuts down. The performance of the liquid level controller is stable and reliable.

4. Automatic reset function, the system will automatically start when the power is restored after a power failure or when the water level is restored.

5. Shielding function of the faulty pump. After the faulty pump is shielded, it will directly exit the operation program, and the standby pump will take over.

6. Automatic protection function: There are automatic protection functions such as overload, over current, short circuit, phase loss, over pressure, under pressure and water shortage.

 

 

Fourth, the scope of application:

1. Residential water for high-rise buildings, residential quarters, villas, etc.

2. Daily water for enterprises and institutions, hotels, office buildings, department stores, large saunas, hospitals, schools, gymnasiums, golf courses, airports and other places.

3. Production water for manufacturing, washing equipment, food industry, factories, industrial and mining.

3. For the already built pool, the water supply method shared by the non-negative pressure water supply equipment and the pool can be used to further save energy;

4. Transform the original air pressure water supply equipment to make full use of the original air pressure tank;

5. Various circulating systems, intermediate booster pumping stations of waterworks;

6. Others: the transformation of water supply in old pools and other forms of water supply;

7. Farmland irrigation system;