Crushing device and crushing method for preparing suspended polytetrafluoroethylene (PTFE) resin

A technology of polytetrafluoroethylene and suspension method, which is applied in the direction of grain processing, etc., can solve the problems of complicated process equipment and so on.

Active Publication Date: 2009-09-02
SHANGHAI 3F NEW MATERIAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, in view of prior art (such as Chinese patent 1100803) disclosed crushing device has the relatively complicated shortcoming of procedure device when being used for pulverizing the polytetrafluoroethylene prepar...

Method used

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  • Crushing device and crushing method for preparing suspended polytetrafluoroethylene (PTFE) resin
  • Crushing device and crushing method for preparing suspended polytetrafluoroethylene (PTFE) resin
  • Crushing device and crushing method for preparing suspended polytetrafluoroethylene (PTFE) resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The polytetrafluoroethylene material and mother liquor after polymerization and high-pressure reaction enter the crushing barrel of the present invention through the discharge pipe, and most of the fibrous PTFE of about 5 mm and some agglomerated materials of about 80 mm sink at the bottom of the crushing barrel. Turn on the water pump, drain the mother liquor from the inlet and outlet pipes through the filter, stop the water pump, and add an appropriate amount of ion-free water so that the distance between the surface of the ion-free water and the oblique blades of the upper layer is 350mm. The height of the lower impingement blade in the bucket from the bottom of the barrel is 300mm, the distance between the beveled blade and the impacting blade is 250mm, the diameter of the beveled blade is φ350mm, the width of the beveled blade is 52mm, and the angle between the plane of the beveled blade and the horizontal plane is . The diameter of the rotary knife impacting the ...

Embodiment 2

[0062] The PTFE material and mother liquor after polymerization and high-pressure reaction enter the crushing barrel through the discharge pipe, and most of the fibrous PTFE of about 5mm and some agglomerated materials of about 80mm sink to the bottom of the crushing barrel. Turn on the water pump, drain the mother liquor from the inlet and outlet pipes through the filter, stop the water pump, and add an appropriate amount of ion-free water so that the distance between the surface of the ion-free water and the oblique blades of the upper layer is 350mm. The height of the impact paddle in the lower layer of the barrel from the bottom of the bucket is 300mm, the distance between the beveled blade and the impact blade is 250mm, the diameter of the beveled blade is φ350mm, the width of the beveled blade is 55mm, and the angle between the beveled blade and the horizontal plane is . The diameter of the rotary knife impacting the paddle is φ260mm, the rotary knife has 4 blades, the ...

Embodiment 3

[0064] The PTFE material and mother liquor after polymerization and high-pressure reaction enter the crushing barrel through the discharge pipe, and most of the fibrous PTFE of about 5mm and some agglomerated materials of about 80mm sink to the bottom of the crushing barrel. Turn on the water pump, drain the mother liquor from the inlet and outlet pipes through the filter, stop the water pump, and add an appropriate amount of ion-free water so that the distance between the surface of the ion-free water and the oblique blades of the upper layer is 450mm. The height of the impact paddle in the lower layer of the barrel from the bottom of the bucket is 300mm, the distance between the beveled blade and the impact blade is 250mm, the diameter of the beveled blade is φ370mm, the width of the beveled blade is 60mm, and the angle between the beveled blade and the horizontal plane is . The diameter of the rotary knife impacting the paddle is φ260mm, the rotary knife has 4 blades, the ...

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Abstract

The invention discloses a crushing device (3) used in PTFE resin prepared through adopting a high-pressure suspension method. The crushing device consists of an upper layer paddle blade (31) and a lower layer paddle blade (32), wherein the upper layer paddle blade (31) is a bias cutting paddle blade and consists of toothed whirling paddles arranged on a rotating shaft; the intersection angle beta between the bias cutting paddle blade (31) and a horizontal plane is between 20 and 70 degrees; the lower layer paddle blade (32) is an impact paddle blade and consists of a rotating blade (321) arranged on the rotating shaft and an arc trough-shaped gear ring (322) fixed with the rotating blade (321) concentrically; the arc trough-shaped gear ring comprises a concentric ring protruding towards the circle center along the inside ring of the gear ring and a protrusion with a recess arranged at one end of the inner ring of the ring near the circle center against the rotating direction of the rotating blade; a straight strip trough is arranged between two arc trough-shaped grooves; and the height h of the concave protrusion is between 3 and 20 mm, while the breadth b of the straight strip trough is between 2 and 20 mm.

Description

technical field [0001] The invention relates to a breaker for breaking polytetrafluoroethylene resin produced by high-pressure suspension reaction and a breaker containing the breaker. Specifically, the present invention relates to a device for processing coarse polytetrafluoroethylene particles obtained by suspension polymerization into medium or fine particles and a method for using the device. Background technique [0002] Polytetrafluoroethylene (PTFE for short) is a thermoplastic polymer containing long carbon chains, which can be prepared by suspension polymerization. It is a material with excellent performance, aging resistance, good chemical stability, and excellent electrical properties. Insulation and good lubricity, wide temperature range, widely used in various industries. PTFE produced by the suspension method is mainly used for processing into products by compression molding or plunger extrusion molding. [0003] The bulk or large particle size polytetrafluor...

Claims

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Application Information

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IPC IPC(8): B02C18/06B02C18/18
Inventor 刘家禹朱慧忠
Owner SHANGHAI 3F NEW MATERIAL TECH CO LTD
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