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You are here : An example of the application of mechanical seals
With the development of chemical industry and the people on the environment, safety awareness, the requirements of the chemical pump higher and higher, in some instances made absolutely certain no leakage of the pump requirements, the demand for the canned pump technology development. Since there is no shaft seal shield pump, you can be absolutely no leaks, thus the use of chemical devices has become increasingly common.
1 The principle and structure of the shielding characteristics of the pump
Ordinary centrifugal pump driven by coupling the pump impeller shaft is connected with the electric axis, so that the rotation of the impeller and the motor work together, while shielding the pump is a non-sealed pump, pump and drive motor are to be sealed in a the pressure of pumping the media is full of container, this is only static seal pressure vessel by a wire group to provide rotating magnetic field and drive the rotor. This structure has eliminated the traditional rotary pump shaft seal, and it could be completely leak.
Shielding pump to pump and motor together, the motor rotor and pump impeller fixed on a common axis, the use of mask sets will be separated from the motor rotor and the stator and rotor is transported in the medium run, driven by the stator magnetic field passed to the rotor.
In addition, the manufacture of canned pump is not complicated, the pump fluid end can follow the structure of commonly used types and standards related to design, manufacture.
2 advantages and disadvantages of canned pump
2.1 The advantages of canned pump
(1) closed. Structurally dynamic seal, and only in the pump casing at a static seal, it can be completely leak, particularly suitable for handling flammable, explosive, precious liquid and toxic, corrosive and liquid.
(2) safe. Rotor and stator have a shielding sleeve of the motor rotor and stator do not contact with the materials, even if the shielding sleeve rupture, it does not produce the risk of external leakage.
(3) compact small footprint. Pumps and electrical engineering a whole, do not need to find the center of disassembly. Requirements on the basis of the base and low, and less routine maintenance, low maintenance cost.
(4), smooth running, low noise, without additional lubricants. As no fan bearings and motor, so no need add oil, and low noise.
(5) the use of a wide range. High temperature, high pressure, low temperature, high melting point and other conditions can meet the requirements.
1 The principle and structure of the shielding characteristics of the pump
Ordinary centrifugal pump driven by coupling the pump impeller shaft is connected with the electric axis, so that the rotation of the impeller and the motor work together, while shielding the pump is a non-sealed pump, pump and drive motor are to be sealed in a the pressure of pumping the media is full of container, this is only static seal pressure vessel by a wire group to provide rotating magnetic field and drive the rotor. This structure has eliminated the traditional rotary pump shaft seal, and it could be completely leak.
Shielding pump to pump and motor together, the motor rotor and pump impeller fixed on a common axis, the use of mask sets will be separated from the motor rotor and the stator and rotor is transported in the medium run, driven by the stator magnetic field passed to the rotor.
In addition, the manufacture of canned pump is not complicated, the pump fluid end can follow the structure of commonly used types and standards related to design, manufacture.
2 advantages and disadvantages of canned pump
2.1 The advantages of canned pump
(1) closed. Structurally dynamic seal, and only in the pump casing at a static seal, it can be completely leak, particularly suitable for handling flammable, explosive, precious liquid and toxic, corrosive and liquid.
(2) safe. Rotor and stator have a shielding sleeve of the motor rotor and stator do not contact with the materials, even if the shielding sleeve rupture, it does not produce the risk of external leakage.
(3) compact small footprint. Pumps and electrical engineering a whole, do not need to find the center of disassembly. Requirements on the basis of the base and low, and less routine maintenance, low maintenance cost.
(4), smooth running, low noise, without additional lubricants. As no fan bearings and motor, so no need add oil, and low noise.
(5) the use of a wide range. High temperature, high pressure, low temperature, high melting point and other conditions can meet the requirements.
