product description:

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.

 

WZG type non-negative pressure steady flow water supply equipment is a complete set of water supply equipment developed by our company's professional and technical personnel on the basis of air pressure water supply equipment, which can be directly connected to the tap water pipe network and does not produce any side effects on the tap water pipe network. It replaces the reservoir and the roof water tank, can make full use of the pressure of the tap water pipe network to directly or indirectly supply water, avoiding secondary waste of energy and secondary pollution of water quality, greatly saving infrastructure investment and shortening the construction period.

 

WZG type non-negative pressure steady flow water supply equipment is composed of intelligent frequency conversion control cabinet, steady flow tank, water pump unit, instrument, valve and pipeline, base, etc. It is suitable for all water supply systems that require increased water pressure and constant flow.

 

Features:

1. WZG type non-negative pressure steady flow water supply equipment is economical and hygienic, and has significant energy-saving effects. 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 more than other water supply equipment 20% to 40%.

2. Easy to install and save floor space:

WZG type non-negative pressure steady flow water supply equipment can be equipped with horizontal steady flow tanks or vertical steady flow tanks. 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:

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

4. Full-featured and highly intelligent:

WZG type non-negative pressure steady flow 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 WZG type non-negative pressure steady flow water supply equipment have been screened by many manufacturers and have reliable quality assurance and are key components in the product.

 

Features:

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 be integrated into the intelligent management system. The main components adopt high-quality 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 exit the operation program directly, and the standby pump will take over the work.

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.

 

Installation and commissioning:

1. The basic size of the equipment shall be constructed according to the basic drawing provided by the manufacturer, and its location and shall comply with the engineering design and the "Quality Requirements for the Basic Size and Position of the Equipment" in TJ231.

2. After the equipment is in place, level it with a spirit level, and its horizontal and vertical horizontality should be less than 0.1%.

3. After the equipment is installed and leveled, the foundation shall be grouted twice with expansive cement, and the piping shall be carried out after 24 hours of maintenance.

4. After wiring the motor, confirm the direction of rotation to ensure it is consistent with the standard arrow.

 

Use and operation:

1. Before using the equipment, the water pump rotor should be turned, and there should be no friction or jamming.

2. 500V low-voltage shake meter detects motor insulation, and it should be above 0.5M.

3. The control instrument and circuit are not damaged.

4. Fully open the inlet valve of the water pump, close the outlet valve, open the exhaust valve of the pump one by one, and close the air valve after the pump cavity is filled with liquid.

5. Place the changeover switch in the manual position and start the pump without load. The direction of operation should be consistent with the standard arrow.

6. Manually start and stop the water pumps one by one, and check that there is no abnormality in the operation of the water pumps.

 

maintenance:

1. The system should be cleaned and purged before the equipment is put into operation to prevent impurities from entering the pump body and causing equipment damage.

2. The pump should not run for a long time with the outlet valve fully closed, nor should it run at the hump in the performance curve, let alone dry run. When the shaft seal adopts packing seal, a leakage of 10-20 drops/min is allowed. .

3. The bearing temperature should not be higher than 75 degrees Celsius during operation.

4. The bearing should be refueled every 500 hours of operation of the water pump.

5. Necessary measures should be taken to prevent the equipment from being contaminated and rusted for long-term shutdown of the equipment. Anti-freezing and warm measures shall be adopted for the shutdown in winter.

6. The operating equipment shall implement preliminary sewage discharge based on the water quality.