Melt pump is a kind of high pressure pump used for transferring melt, which is widely used in plastic, rubber, chemical fiber and other industries. In the sheet extrusion pump, packing seal is a common sealing method, it can effectively prevent the melt leakage, to ensure the normal operation of the equipment.
sheet extrusion pump
Thermoplastic melt pump manufactuer seal form, packing seal and mechanical seal is usually used in the form of a combination of a form. Compared with the spiral seal, it has a simple structure, easy to disassemble, can comprehensively play the advantages of packing seal and mechanical seal. Packing seal is often used in the form of shaft seal, but the selection of packing, sealing performance and structural design directly affect the effectiveness of the seal.
thermoplastic melt pump manufactuer
The essence of the packing seal is to use the sealing filler is soft, under the action of axial compression force, radial obstruction may melt leakage channel, the force exerted on the packing seal must make the packing and sealing between the axial surface of the shaft to produce contact stress can be sealed by the sealing of the role of melt pressure. Therefore, the radial contact pressure at the bottom of the packing box must be greater than or equal to the pressure of the sealed melt.
melt gear pump
Packing must have the conditions: 1, there is a certain degree of plasticity, in the compression effect can produce a certain radial force and close contact with the shaft. It has enough chemical stability, do not contaminate the medium, filler should not be medium bubble up, filler in the immersion agent is not dissolved by the medium, filler itself does not corrode the sealing surface. 3, self-lubricating performance is good. Wear-resistant, small coefficient of friction. 4, there is a small amount of eccentricity of the shaft, the packing should be enough floating elasticity. 5, simple manufacturing, easy to fill. Zhengzhou BATTE professional melt pump manufacturer, provide specifications from 0.1CC to 12000CC melt gear pump, welcome to consult.
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