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Method 1: the opening of the outlet valve adjustment
Method two: bypass valve adjustment
Method three: adjusting the diameter of the impeller
Method four: speed contro
The efficiency of the pump is the key to whether the power is completely converted to mechanical energy:
1.Water pump in the coil, the power will heat, it shows that a part of the electric power can be consumed by the coil resistance.
2.The pump has be
As we all know, the pipeline is a kind of solid, the water is easy to flow of material within the pipeline, if the water is flowing, there must be a part of the energy into heat and "destroy", which is the loss of part of water (or head), which is a ref
1. Check the parts: submersible pump impeller, ring, sleeve, bearing and others are wearing parts. The first part of the pump should be removed, check whether the vulnerability is intact. Use of damage and non qualified spare parts.
2. Replace the lubr
The maintenance of centrifugal pump vertical pipe parts and repair according to the content and workload, divided into minor repairs, repair, overhaul and overhaul system four.
To ensure the efficient operation of pumps is an important link to improve the efficiency of high temperature magnetic pump pumping station. The efficiency of pump is related to the design and manufacture level of pump, the running of pump and the managem
Scope of application
Fire, cooling equipment, applicable to offshore seawater desalination, can also be used as a ground source heat pump heating in all coastal areas, enhance the use of coastal seawater, fountain square landscape, marine aquaculture, d
1.Has not been installed pumps should be coated with a layer of suitable anti rust agent in unpainted surface, oil lubricated bearings should be filled with the appropriate oil, with grease lubricated bearings should only be filled with a kind of grease,
The vitreous enamel enamel is coated on the metal substrate surface after high temperature sintering, between enamel and metal physical and chemical reactions and mechanical strength of metal bond, on the whole, a surface coating material with corrosion r
Chemical process pump refers to the general name of the pumping raw materials, semi-finished products and products in petrochemical plant. Applicable to oil refining, petrochemical, chemical industry and other sectors of the transport of raw materials, se
Axial flow pump according to the direction of the pump shaft is different, can be divided into vertical, horizontal, oblique type; according to whether the blade can be adjusted to reconcile the different agencies, but also can be divided into fixed, semi
Axial flow pump is a single screw pump with high specific speed, the speed ratio is generally 500~1200. Features are large flow, low head, high efficiency, small size of the pump. Common axial flow of the head is generally 4~15m, there is little more than
As the valve is in the most practical use, for rapid qualitative determination of closure, and in the moment of valve closure, the medium is the direction of flow, with the valve closed, medium speed from maximum back to zero quickly, and the pressure is
There are many kinds of centrifugal pumps, and there are many kinds of classification methods. According to the nature of the transport of liquid, chemical production in commonly used centrifugal pumps are pumps, corrosion resistant pumps, pump, liquid pu
The vane pump is a water pump which enhances the kinetic energy and potential energy of the water through the interaction between the blade and the water flow. According to the shape of the blade and the different direction of the impeller, the impeller i
The valve work in a certain period of time to maintain a continuous and complete given functional requirements, so that the given parameter values to maintain this performance within a prescribed range is called no fault, when the performance of the valve
Measures to improve the effective cavitation margin of the feeding device:

1.Reduce the installation height of the suction device pump.
2.Increase the pressure of the liquid level in the tank before the pump to improve the effective cavitation margi
Valve body and valve cover leakage :

1.High quality cast iron castings, valve body and valve cover blisters, loose organization, slag and other defects on the body
2.Cold cracking;
3.Bad welding, there is a slag, not welded, stress crack and other
Ground source heat pump system: its greatest advantage is very economical, covers an area of small, but must pay attention to must meet the following conditions: water quality is good; the quantity is rich; conforms to the standard.
1. Case of pump,
2.The pump shaft is generally carbon steel, commonly used in steel, 2Cr13, etc. 45,
4. Impeller
5. Bearing
6.The mouth ring
8. Oil seal
9.Pump auxiliary seal
Pump is a kind of energy conversion machine, energy conversion process is bound to accompany the loss of energy, and efficiency is a measure of this conversion, how to improve the efficiency of the pump, reduce energy loss? It is necessary to make clear t
Pipeline booster pump is a new type of pump, which is a new type of pump, which is developed to solve the pressure of pipeline. Due to the use of advanced mechanical seal, impeller mounted directly on spindle motor, it has the characteristics of high effi
The power of the submersible sewage pump in general is always increased with increasing flow, popular point is a power curve increase with the rising flow curve, the use of submersible sewage pump will bring about a problem: in the design of sewage pump r
Safety valve is a safety valve, its opening and closing parts under the action of external force in a normally closed state, when the device or the medium pressure inside the pipe increases, exceeds the set value automatically open, discharge to the syste
For a given pump, at a given speed and flow must have the necessary to have the necessary cavitation margin, commonly known as NPSHr. Also known as the pump cavitation margin, is required to achieve the performance of the pump cavitation performance param
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