Product Introduction

ZRXG typenon-negative pressure water supply equipment, is a complete set of water supply equipment developed by our company's professional technical personnel based on pneumatic water supply equipment, which can be directly connected to the tap water pipeline network and does not have any side effects on the tap water pipeline network. He replaced the water storage tank and roof water tank, which can fully utilize the pressure of the tap water network to directly or indirectly supply water, avoiding secondary waste of energy and secondary pollution of water quality, greatly saving infrastructure investment and shortening construction period.

The traditional water supply method relies on the water in the reservoir, which is usually supplied by the tap water network. In this way, the pressurized water enters the reservoir and becomes zero, causing a large amount of energy to be wasted.

The ZRXG type non negative pressure water supply equipment consists of an intelligent variable frequency control cabinet, a steady flow tank, a water pump unit, instruments, valves and pipelines, a base, etc. It is suitable for all water supply systems that require increased water pressure and constant flow rate.

When the WB type non negative pressure water supply equipment is put into normal use, water from the municipal pipeline enters the non negative pressure steady flow tank, and a large amount of air inside the tank is discharged from the exhaust valve. When the air is exhausted, the floating ball inside the valve is lifted by removing water, and the transmission plug is moved to the closed position. Slowly close the exhaust port, stop the exhaust, and prevent water from flowing out. When the water flow in the steady flow tank is normal, if a small amount of air accumulates in the valve to a considerable extent, the water level inside the valve will drop, and the floating ball will follow suit. At this time, the air will be discharged through the exhaust hole.

During the normal operation of ZRXG type non negative pressure water supply equipment, when the municipal water supply network is insufficient, the water flow in the municipal inlet pipe is empty, or the water pressure in the stabilizing tank is lower than atmospheric pressure, the water level in the stabilizing tank drops, and the floating ball also drops, driving the plug to open and suck in air, so as to maintain atmospheric pressure in the stabilizing tank and prevent negative pressure on the municipal water network.

When the pressure in the municipal pipeline network is lower than the set pressure required by the user, the water pump operates with variable frequency speed regulation to ensure that the pressure in the user's pipeline network meets the user's water requirements. The higher the water pressure in the municipal pipeline network. The lower the speed of the water pump, the lower the water pressure in the municipal pipeline network, and the higher the speed of the water pump. When the water supply pressure of the municipal pipeline network meets the user's requirements, ZRXGThe type of non negative pressure water supply equipment automatically stops working, and the water in the municipal pipeline network is directly supplied to users through the bypass pipe. When the municipal pipeline network stops water supply, the water level in the stabilizing tank gradually decreases. When it drops to the lowest water level, the liquid level gauge on the stabilizing tank sends a shutdown signal,ZRXGThe type of non negative pressure water supply equipment automatically stops running and displays a water shortage protection signal.

When the power grid experiences a power outage, ZRXGThe non negative pressure water supply equipment is shut down, and the water in the municipal pipeline network is directly supplied fromZRXGNon negative pressure water supply equipment is supplied to users through bypass pipes.

Model Meaning

Product advantages

1. No need to build a water tank, energy-saving, and cost saving:

The ZRXG type non negative pressure water supply equipment is economical, hygienic, and has significant energy-saving effects. Practice has proven that the use of intelligent non negative pressure stable flow water supply equipment can save more than 50% of the cost of building new water tanks. Compared with other water supply equipment, it can save 20% to 40%.

2. Easy installation and space saving:

The ZRXG type non negative pressure water supply equipment can be equipped with both horizontal and vertical steady flow tanks. The two types of steady flow tanks have different characteristics: horizontal steady flow tanks occupy less space, while vertical steady flow tanks occupy less area. The manufacturing and testing of steady flow tanks comply with the provisions of GB150 "Steel Pressure Vessels", and the inner walls of the tanks are coated with advanced "841 epoxy polyamide food container inner wall coating" for corrosion prevention, ensuring safety and compliance with national food hygiene standards.

3. Widely applicable and adaptable:

The ZRXG type non negative pressure water supply equipment can be used for domestic water supply, fire water supply, and can be equipped with any type of water pump. When the equipment is used for fire protection, it is recommended to equip it with a dedicated fire pump.

4. Fully functional and highly intelligent:

The ZRXG type non negative pressure water supply equipment adopts advanced human-machine frequency conversion control technology, with soft start, overload, short circuit, overvoltage, undervoltage, phase loss, overheating, and stall protection functions. Signal alarm, self check, fault diagnosis, etc. are carried out in abnormal situations, and the water supply flow rate is automatically adjusted according to the high or low water consumption.

5. Advanced products and reliable quality:

ZRXGThe accessories used in the non negative pressure water supply equipment have been selected by many manufacturers and have reliable quality assurance. The key components in the product, such as motors, water pump bearings, frequency converters, circuit breakers, contactors, relays, etc., are made of high-quality international and domestic brand products.

performance parameter

structural drawings

instructions

The inlet of the non negative pressure tank is connected to the tap water pipeline network, and the outlet is connected to the water pump until the user. When tap water enters the non negative pressure tank, the water level in the non negative pressure tank gradually rises, and the air in the non negative pressure tank is automatically discharged through the non negative pressure automatic exhaust valve, so that the inside and outside of the non negative pressure tank are connected and no pressure is formed. When there is no water in the negative pressure tankWhen the water level reaches a certain level, the non negative pressure valve receives a water level signal and closes the automatic exhaust valve, allowing pressure to slowly form inside the non negative pressure tank. As water continues to enter the pipeline network, the pressure inside the non negative pressure tank gradually increases until the pressure inside the non negative pressure tank is balanced with the pressure in the inlet pipeline network, and the water level inside the non negative pressure tank can be stabilized. When the water consumption of the water pump increases or the water volume of the tap water network decreases, the air pressure of the non negative pressure tank gradually expands and the water level gradually decreases. When the water level is lower than the specified water level, the non negative pressure valve receives a signal of water level decrease and opens the automatic intake valve to prevent the formation of a vacuum inside the non negative pressure tank, resulting in the inability of the water pump to form a suction stroke and thus the inability to destroy the natural pressure of the tap water network. When the water pump continues to operate and there is no more water supply in the negative pressure tank or when the water supply network stops running, the water pump will automatically stop running through the liquid level controller signal (to avoid damage caused by idle operation of the water pump). When the tap water network resumes water supply, the water pump automatically resumes operation after receiving the pressure sensor signal, and the water level in the non negative pressure tank also rises accordingly. The air pressure in the non negative pressure tank gradually compresses, thus avoiding the severe impact of water pressure caused by the system during the pressure recovery process.

When the pressure in the tap water network is lower than the pressure required by the user, a soft start operation of a water pump is implemented through the function of adjusting the speed of the frequency converter. When the first water pump cannot reach the pressure required by the user at full speed, the second water pump will receive a signal to start soft start operation successively. When the second water pump cannot meet the required pressure, the third water pump will start successively until it meets the water supply requirements. If the pressure of the tap water pipeline gradually increases, the microcomputer will automatically control the water pumps to stop one by one, and the tap water can be directly supplied to the highest point. This can fully utilize the pressure of the tap water pipeline network and solve the disadvantage of no water equipment due to power outages.