Polytetrafluoroethylene compensator and manufacturing technology thereof

Abstract

The invention discloses a polytetrafluoroethylene compensator and a manufacturing technology thereof, and belongs to the technical field of compensators. The polytetrafluoroethylene compensator comprises a compensator die and a tetrafluorohydrazine compensator, wherein a sealing surface die is arranged on each sealing surface of the compensator die; a die pressing mandrel is arranged at one side of the compensator die; a rubber sleeve is arranged between the compensator die and the die pressing mandrel; a sealing compressing flange is mounted on the compensator die; a fastener is arranged on the sealing compressing flange; empty cavities among the sealing surface die, the compensator die and the rubber sleeve are filled with PTFE (polytetrafluoroethylene) powder; and the compensator die isof a single-wave or multi-wave form and is manufactured through a stainless steel material. The polytetrafluoroethylene compensator is simple in structure, and convenient to use, and can be insertedand formed in one time; the size is uniform; in addition, wave form is fixed, so that the thermal deformation is avoided; standardization is easily realized; local stretching deformation is avoided; micropores are avoided. Therefore, the service life is greatly prolonged; and meanwhile, waste materials are not produced in the whole circulating process, so that the energy saving and consumption reducing effects can be achieved.

Description

technical field [0001] The invention relates to a compensator and a manufacturing process thereof, in particular to a polytetrafluoroethylene compensator and a manufacturing process thereof, and belongs to the technical field of compensators. Background technique [0002] PTFE compensators are widely used in chemical and pharmaceutical anti-corrosion pipelines, and there are corresponding national standards and industry standards. Now the production process of PTFE compensators is mainly as follows: [0003] 1. Compensator for normal pressure or micro-negative pressure conditions: Manufactured by winding PTFE tubes, dispersed material PTFE tubes or welded PTFE tubes by calendering, pressure and heating. [0004] 2. PTFE compensator used in high vacuum working conditions: Manufactured by turning thick-walled PTFE molded tubes. [0005] Defects and deficiencies of the prior art: [0006] 1. The PTFE compensator formed by hot calendering has local tensile deformation, and the...

AI Technical Summary

Problems solved by technology

[0006] 1. The PTFE compensator formed by hot calendering has local tensile deformation, and the micropores between the pipes or plates will become larger during the drawing process, and serious leakage will occur;

[0007] 2. The waveform of the compensator formed by hot rolling is not uniform and difficult to shape. The compensator made by the same mold or the same person will be quite different, and the shape will be restored under the condition of temperature;

[0008] 3. The service life of the PTFE compensator formed by hot rolling is generally short due to the existence of the above (1) and (2);

[0009] 4. The PTFE compensator produced by lathing thick-walled PTFE molded tubes uses a lot of materials and cannot be processed too long. If it is too long, it will be difficult to control the processing accuracy because the workpiece starts to soften, which will affect the product quality. In addition, the processed ones PTFE waste is difficult to recycle and can only be treated as waste, wasting resources

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