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PUMPS CMF2-50 50HZ
A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. Before the pump starts, water must be filled into the casing and suction pipe. Then, start the motor so that the pump shaft drives the impeller and makes it rotate at higher speeds. Water undergoes centrifugal motion and is thrown to the outer edge of the impeller, passing through a worm bearing and entering into a flow channel of a shell where it becomes pressurized water line of a pump.
Product parameters
| 50Hz | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Model | Model | Driving motor P2(KW) | Q (m3/h) | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 |
| CMF2-50 | CHL2-50 | 0.55 | H(m) | 43 | 40 | 35 | 33 | 28 | 22 |
Precautions When Using High Lift Pumps
- After the pump of the high lift pump is used, please do not arbitrarily change the chemical nature of the transmission, because different chemical liquids are easy to produce different chemical changes after mixing, and even the chemical reaction is easy to generate high heat, causing damage to the pump, and there are many chemicals, which will cause great harm to the human body. Personnel should try to avoid dangerous areas.
- Before starting the power supply of the high lift pump, we should first check the correct position of the valve and pipeline, then start the power supply, and check whether the outlet liquid is normal at any time
- The transportation of dangerous liquids under incorrect operating conditions, such as: the inlet and outlet valves are not opened, the pump materials are not selected correctly, the idle operation, and the pipe materials of the high lift pump are not consistent, will cause great danger, especially in the idle operation, the liquid in the pump will have high temperature and gasification. Some chemicals contain hydrogen, which will seriously cause a gas explosion or hydrogen explosion. The operation should pay special attention to safety.
- When using a high lift pump in a special environment, if you need a pressure proof explosion-proof motor or a safe explosion-proof motor, you need to contact a professional for operation.
- The motor specially treated with anti-corrosion paint must be used in an environment containing chemical gas.
- Any misuse, such as overpressure, chemical incompatibility, self modifying parts, use of damaged parts, etc., may lead to dangerous situations, which require careful use.
Why can't high lift pumps be used at low lift?
Reasonable selection of water treatment equipment is the knowledge that every designer needs to master. As the core equipment of transportation and lifting, pumps are everywhere in water treatment projects. Therefore, how to select the pump is also very important! Usually, when selecting the type of pump, we will ask the user how much the flow head is required. If the flow head cannot be determined, it cannot be selected correctly.
Before purchasing the pump, many users think that the pump with a higher lift can be used in a wider range under the condition of a lower lift. In this misleading misconception, when buying a pump, the pump head selected is very high.
In fact, for centrifugal pumps, when the pump model is determined, its power consumption is proportional to the actual pump and flow. When the pump has a low head, the flow will increase; Thus, the current is higher, the flow is smaller, and the power consumption is lower. On the contrary, lower lift, greater flow, and greater power consumption. Therefore, to prevent motor overload, it is generally required to use the pump pumping head, and the actual calibrated head shall not be less than 60%.
Therefore, when the high lift pump is used for low lift, it is easy to overload and the motor is easy to heat up. In serious cases, the motor is burned out. In case of emergency use, it must be adjusted by the outlet valve installed on the outlet pipe. Usually, a self-operated regulating valve (or wood block, and other methods) can be used to reduce the outlet flow and prevent the motor from overloading. Pay attention to the temperature of the motor. If the motor is overheated, a small water outlet flow or shutdown in time can avoid burning the motor. Some users forcibly reduce the flow by reducing the power supply voltage, which will increase the motor load.
In fact, on the contrary, the unit outlet pipe of the centrifugal pump drainage and irrigation station is equipped with valves to reduce the load of the motor. The valves should be closed before the pump stops. After the pump starts, gradually open the valves to prevent overcurrent during startup.
It should be installed in this way: install the low lift pump in front of the high lift pump, that is, the outlet water of the low lift pump is sent to the inlet of the high lift pump. There is a problem that the outlet pressure of the low lift pump cannot exceed the upper limit of the inlet pressure of the high lift pump, otherwise, it is prone to overpressure and water leakage.
Therefore, the choice of lift is very important. When buying a pump, you must first make clear the required lift or outlet pressure, to correctly select a suitable pump!
Application field
① In the production of chemical and petroleum sectors, most of the raw materials, semi-finished products and finished products are liquids, and the production of semi-finished and finished raw materials into semi-finished products and finished products needs to go through complex technological processes. During these processes, pumps play a role in transporting liquids and providing pressure flow for chemical reactions. In addition, in many installations, pumps are used to adjust the temperature.
② In agricultural production, pumps are the main irrigation and drainage machinery. my country's rural areas are vast, and a large number of pumps are needed in rural areas every year. Generally speaking, agricultural pumps account for more than half of the total output of pumps.Pumps are also the most used equipment in the mining and metallurgical industries. The mine needs to be drained by pumps, and in the process of beneficiation, smelting and rolling, pumps are needed to supply water.
③ In the power sector, nuclear power plants need nuclear main pumps, secondary pumps, and tertiary pumps, and thermal power plants need a large number of boiler feed pumps, condensate pumps, oil and gas mixing pumps, circulating pumps, and ash pumps.
④ In national defense construction, the adjustment of aircraft flaps, tail rudders and landing gear, the rotation of warships and tank turrets, and the ups and downs of submarines all require pumps. High pressure and radioactive liquid, and some also require the pump without any leakage.
⑤ In short, whether it is aircraft, rockets, tanks, submarines, drilling, mining, trains, ships, or everyday life, pumps are needed everywhere, and pumps are running everywhere. That's why the pump is listed as a general-purpose machine, which is a major product in the machinery industry.
⑥ Electric pumps, i.e. pumps driven by electricity. The electric pump is composed of a pump body, a water lift pipe, a pump base, a submersible motor (including cables) and a starting protection de
