Lzw No Negative Increase Water Pressure Water Supply Equipment

• Customization: Available
• Max.Head: 158m
• Max.Capacity: 135L/S
• Model NO.: LZW
• Driving Type: Motor
• Material: Cast Iron
• Structure: Multistage Pump
• Assembly: Liquid Pumps
• Power: Electric
• Start Up: Electric Pump
• Application: Submersible Pump, Clarified Water Pump, Sewage Pump, Slurry Pump, Chemical Pump, Water Supply Equipment
• Industry: Water Supply Equipment
• Theory: Centrifugal Pump
• Color: White
• Certificate: ISO9001:2008
• Standard or No: Standard
• Transport Package: Mechanical Seal Packaging
• Specification: caliber: 20~300mm
• Trademark: Lyson
• Origin: China
• HS Code: 8413709990
• Production Capacity: 5000pieces/Month

Product Description

                                            Product introduction
LZW series of water supply equipment is divided into LZW tank non-negative pressure supercharger steady flow water supply equipment and LZWX box negative pressure pipe network water supply equipment, compensated by the tank or steady flow compensation for differential compensation in the municipal water supply pressure Based on the stacked water supply, that is, the rational use of resources and eliminate the negative pressure on the municipal water supply network is the most advanced environmental protection and energy saving water supply equipment:
                    1, according to the municipal pipe network water supply and user needs, set the pump station water protection.
                    2, when the municipal pipe network water pressure can directly meet user requirements, the device is in hibernation, the municipal pipe network to the user directly.
                    3, when the municipal pipe network pressure can not meet the needs of users, the system automatically wake up, through the frequency control, based on the original municipal pipe network pressure, according to the principle of how much to make up for the superposition of water until it reaches the actual pressure needs, and vice versa Reduce the pump operating frequency, when the sleep frequency to reach a period of time, the system into hibernation.
                   4, when the municipal pipe network pressure drops to protect the value or negative pressure detector detects the negative pressure signal, no negative pressure device starts, open no negative pressure water supply mode. When the system detects that the municipal pipe network pressure has risen above the protection value, it will restore the status of water supply or direct water supply. This will not only ensure the user water, but also protect the municipal pipe network pressure is not affected.
                  5, the tank without negative pressure supercharger steady current water supply equipment, steady flow compensation tank is divided into water supply and regulation area, the normal water supply, water supply and regulation area is full of water. No negative pressure water supply mode, the vacuum suppressor is turned on, the water in the regulating area is automatically adjusted to compensate for the difference in the water supply area. At the same time, the steady flow compensator is started and the differential compensation water supply is carried out together. Under normal circumstances, the need for differential compensation time is very short, the compensation is completed, return to the normal water supply mode, water pipe network will be through the water supply area, the regulation area is full, the regulation area of air discharge, water and air completely isolated , To eliminate secondary pollution.
                 6, box-type negative pressure pipe stack steady flow of water supply equipment in use, if the municipal water supply can be a direct way to meet user needs for a long time, in order to ensure fresh water tank clean, water cycle controller will be in the daily Set the time, automatically switch to the tank water supply mode, so that the tank of water to be timed cycle, to keep the water clean.
                7, in order to ensure that the tank water level to meet the demand at any time, the water tank set high school and low water level, when the water level dropped to low water level, stop taking water from the tank; when the tank water level dropped to the water level, the municipal pipe network Replenishment to the tank; when the water level within the tank reaches a high water level, stop taking water from the municipal side. When the tank overflows excessively, the system alarms and stops supplying water to the tank to prevent unnecessary overflow losses.






                                                                          Features

Save a total investment of 70%	Do not build water tanks or water tanks, and water pipes directly connected to the pressurized water supply, tap water can take full advantage of the original pressure, reduce the pump model (the original pump needs 60M head, now only 30M can be).
Pure water	Pure tap water is supplied directly to the user after being pressurized by the equipment, hermetically sealed and completely separated from the air.
Save 20%	Fully enclosed structure to eliminate running, running, dripping, leakage, seepage, coupled with regular cleaning, disinfection and other waste of water resources and water pipelines directly in series.
Save 70%	The utility model can make full use of the original pressure difference of the tap water pipe to make up for how much, when the tap water meets the requirement, the device stops working, and the energy saving effect is remarkable, reaching more than 70%.
Save space, save installation time	Do not build the pool, do not install the water tank, complete sets of equipment factory, to the scene, the user's tap water inlet and outlet pipes can be docked directly with the equipment, construction is simple, short construction cycle, small footprint.
Save manpower and material resources	The use of water quality of the equipment is not polluted, no need to install disinfection equipment, to avoid secondary pollution, the device increased by a small regulator, further saving investment. Use very economical, because there is no pool or tank, saving the cost of regular cleaning and disinfection.
low noise	As the pump through the steady flow compensator directly connected with the tap water, there is no tap water inflow of huge water rushing sound; system due to the use of stainless steel light vertical multistage centrifugal pump, greatly reducing the pump noise caused by the operation.
Advanced control system	The device has applied the advanced control technology in the world, such as fuzzy control, integrated control, etc., and has powerful remote monitoring function and wireless monitoring function (optional).
No pollution	The overcurrent part of the pump station is all stainless steel food, no negative pressure when the tank is not in contact with air storage, no secondary pollution of water quality. Vacuum box device automatically updates the tank water storage, to ensure fresh water quality clean
Accessible	System control using fuzzy theory, modular design, artificial intelligence precise control
No problem	Strict entry and exit inspection, to ensure the safe operation of equipment
No worries	Improve the pre-sale, sale, service, allowing users to use no worries

                                         Applications
Civil and industrial buildings and living hot and cold water supply, neutral water, fire water, air conditioning circulating water system of the original water tank water treatment industry, water tanks, clean water tanks and other environmental protection industries water treatment tank food and beverage, medical and health, chemical industry , The boiler industry replenishment and other occasions.
                                         Conditions

Ambient temperature:0~40ºC	Pressure range:0~2.5Mpa
The main pump of the total flow:0~1000l/s	The main pump head:22~158M
Control power:≤550KW	Pressure regulation accuracy:≤0.01Mpa
Regulator:0.6Mpa~1.6Mpa	Relative humidity:≤90%(Electronic control section)
Inhalation manifold diameter:Dna=150~250mm	Discharge manifold diameter:Dna=100~150mm
Control pump motor power:≤180KW	power supply:380V*(1+10%)*50Hz+2Hz
Medium pH:PH=6~8	Power frequency: 50Hz±2Hz

(If the user requires negative pressure water absorption, then according to user requirements separate design diversion device)
                                                  principle
The pressure sensor or flowmeter will be converted into electrical signals into the automatic control box, the signal through the automatic control box after the operation feedback to the inverter, the inverter by changing the frequency to change the motor speed, so as to change the pump at any time, will be the operation of Constant water pressure at a certain point to be determined, and the flow rate according to the size of the water changes, not only to achieve energy saving, but also safe and reliable.
The device is the parallel connection of multiple pumps, when the water consumption is less than or equal to a single pump working flow, the variable frequency pump starts to work, the water consumption gradually increases beyond the single pump working flow, the power frequency pumps have been put into operation, while the variable frequency pump Play a trace role in regulation. When the amount of water is gradually reduced, one by one to stop working frequency pumps, until the variable frequency pump.
The unit is also equipped with a pressure pump or pressure tank, when the amount of water is very small, the pressurized water stored in the pressure tank or pressure pump to provide pressure water to maintain the system, variable frequency pump to stop working, its energy saving effect is better.
The unit is composed of one to four main pump, a constant pressure pump (or pressure tank), water mains, valves, automation instruments, automatic frequency conversion control box and so on, so it is easy to install and compact. Ex-factory rigorous testing, stable performance.
                      Causes of failure and troubleshooting

Failures	Possible Causes	Recovery
No water pump	a. The outlet valve is not open, the outlet line is blocked, and the impeller runner is blocked b. Motor running in the wrong direction, motor phase loss is very slow c. Suction tube leak d. The pump is not filled with liquid and there is air in the pump chamber e. pipeline resistance is too large, pump type selection is wrong	a. Check and remove the obstruction b. Adjust the motor steering, tighten the motor wiring c. Tighten each sealing face nut to eliminate air d. Open the pump cover or open the exhaust valve to drain the air e. downtime check, adjust f. reduce the pipe bend, re-select the pump
Insufficient pump flow	a. Press 1. Check the cause b. pipe, pump impeller runner partially blocked, scale deposition valve opening insufficient c. Low voltage d. impeller wear	a. Press 1. to exclude b. Remove the obstruction and readjust the valve opening c. Regulated d. Replace the impeller
Power is too high	a. More than the rated flow b. Pump bearing wear c. The impeller is entangled with fibers	a. Adjust the flow, close the small outlet valve b. Replace the bearing c. Clear the fibers
Noise vibration	a. The pipe support is not stable b. liquid mixed with gas c. cavitation d. bearing damage e. Motor overload heating operation	a. Secure the pipeline b. increase suction pressure, exhaust c. reduce the degree of vacuum d. Replace the bearing e. Adjust Press 5
Motor is hot	a. Flow is too large, overloaded operation b. Rubbing c. Damaged motor bearings d. Insufficient voltage	a. Flow is too large, overloaded operation b. Rubbing c. Damaged motor bearings d. Insufficient voltage
Water pump leaks	a. Mechanical seal wear b. The pump body has sand holes or cracks c. sealing surface is not flat d. Loose mounting screws	a. Change b. welding repair or replacement c. Trimming d. Tighten

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