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horizontal multistage pumpS CM2-30 60HZ
This Water Pump will irrigate your lawn, garden and property efficiently. The pump is built to be completely durable and will operate with even the most demanding conditions. It comes with an extra-large filter basket and see-through lid which are detachable and easy to clean and maintain.
This self-priming pump provides long service life and is easy to install. The cord is a standard 5', so it can be used in a variety of different circumstances. The iron motor housing and commercial-grade reinforced thermoplastic shell ensure corrosion resistance, and the drain plug at the bottom for easy drainage after use.
Product parameters
| 60Hz | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | Model | Driving motor P2(KW) | Q (m3/h) | 0.8 | 1.2 | 1.6 | 2.0 | 2.4 | 2.8 | 3.2 | 3.6 | 4 |
| CM2-30 | CHLF2-30 | 0.55 | H(m) | 36 | 35 | 33 | 31 | 29 | 29 | 24 | 21 | 18 |
Maintenance of Water Pump
During vehicle use and maintenance, if the engine water pump is not properly used and maintained, water leakage, bearing damage, pump shaft wear, and other failures are likely to occur, forcing the engine to stop for repair and affecting the normal use of the vehicle. Therefore, the following seven aspects should be achieved in use.
- When driving and installing the engine water pump correctly, ensure that the gear driven water pump closely matches the drive gear, and ensure that the coaxiality of the water pump shaft and the pulley hub is within the specified range for the belt driven water pump. Prevent the water pump from shaking when the engine increases speed and load, which will aggravate wear.
- Adjust the belt tightness in time. The fan belt cannot be adjusted too tight, or the load of the water pump bearing will be increased. If two belts are used for transmission, ensure that the new and old belts are the same in length and tightness to prevent the water pump from being damaged due to imbalance caused by different forces on the two belts.
- Fill lubricating oil in time. The water pump bearing shall be lubricated in time. Generally, it shall be filled once every 6000~8000km. In practice, many drivers and repairmen often neglect the lubrication of the water pump bearing, or because the grease fitting is damaged and not replaced in time, it is impossible to inject oil at all, resulting in early damage of the bearing due to lack of oil, and wear of pump shaft and other parts.
- The water pump shaft with the overflow hole that cannot be blocked has an overflow hole, which can observe whether the water pump leaks. The hole cannot be blocked. If it is blocked, the leaking water will enter the bearing and damage the lubrication, leading to early damage to the bearing.
- In winter, the water shall be drained to prevent the water seal and pump shaft from freezing due to water storage in the pump. When starting, it is very easy to make the pump shaft rotate and tear the water seal, causing water leakage.
- Timely remove the scale in the water pump The scale in the water pump has accumulated for a long time, which weakens the pump capacity. At the same time, the scale is easy to corrode the components in the water pump, causing early damage to the water pump.
- When replacing the water pump bearing, the proper bearing shall be selected, and the bearing shall be tightly seated in the bearing seat during installation. The selected bearing shall be of reliable quality, otherwise, the pump shaft will be worn due to the short service life of the bearing.
Pump selection steps
Confirm environmental conditions
Including ambient temperature, relative humidity, atmospheric pressure, air corrosivity, dangerous area grade, dust, and waterproof requirements.
Confirm the operating conditions
It refers to the liquid level pressure at the suction side (absolute), the liquid level pressure at the discharge side, intermittent or continuous work, fixed position or movement, and the convenience of installation and maintenance.
Confirm the nature of the medium
Including medium name, temperature, density, viscosity, saturated steam pressure, solid particle diameter and content, gas content, corrosivity, volatility, flammability, and toxicity.
Select the material of the flow passage parts of the pump
According to the physical and chemical properties of the pumped medium, the following aspects are mainly considered:
(1)Corrosivity of medium
The corrosion resistance of the flow passage parts of the pump can meet the use requirements. Do not pursue too high corrosion resistance, otherwise, the purchase cost of the pump will be greatly increased.
(2)Whether the medium contains solid particles
Because the hardness and content of solid particles are directly related to the durability of pump flow parts.
(3)Temperature (pressure) of medium
The higher the temperature (pressure) of the medium, the higher the material strength of the flow passage parts of the pump. Generally, when the temperature is >250 ℃, steel castings or steel parts should be selected.
(4)Media with sanitary grade or prohibited pollution requirements
Select the corresponding flow passage component material. In addition, the structure of the pump should be easy to clean.
Select pump performance parameters
(1)Calculation method
A.Flow: it is directly related to the production capacity and transportation capacity of the whole device. For example, the normal, minimum, and maximum flows of the pump can be calculated in the process design. When selecting a pump, take the maximum flow as the basis and consider the normal flow. If there is no maximum flow, 1.1 times the normal flow is usually taken as the maximum flow.
B.Head: generally, the head after enlarging the margin of 5%-10% shall be used for model selection. Special attention: the margin of centrifugal pump flow, especially the head, should not be too large, otherwise, cavitation may occur when the pump is working, resulting in the flow and head failing to meet the requirements. Once this happens, generally, remedial measures such as cutting the outer diameter of the impeller or turning down the pump outlet valve can be taken.
C.Power: generally, the powder form and size of the pump are selected by the manufacturer and marked in the product sample.
D.NPSH: Check whether the NPSH and necessary NPSH of the pump device match. When it cannot be met, effective measures should be taken to achieve it.
(2)Analogy method, test method
When the resistance value of the pump pipeline system cannot be accurately calculated, the flow, head, and other performance parameters of the required pump can be determined by analogy or test method.
Select the pump installation type
According to the pipeline layout and installation site, horizontal, direct connection, vertical and other types (right angle type, variable angle type, angle type, double connection type, removable type) shall be selected.
Determine the number of pumps and standby rate
Generally, only one pump is used for normal operation, because a large pump is equivalent to two small pumps working in parallel (referring to the same head and flow), and the efficiency of the large pump is higher than that of the small pump, so from the perspective of energy conservation, it is better to choose a large pump instead of two small pumps, but in case of the following situations, the parallel cooperation of two pumps can be considered:
(1)The flow is large, and one pump cannot reach this flow.
(2)For pumps requiring a 50% standby rate, three pumps can be configured as two-purpose and one standby.
(3)For some large pumps, the pumps with 70% flow requirements can be selected for parallel operation without standby pumps. When one pump is overhauled, the other pump still undertakes 70% of the product delivery.
(4)One pump that must operate continuously for 24 hours should be operated, one for standby and one for maintenance. There are three pumps in total. If necessary, the pump supplier can assist in the selection.
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
