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Equipment for manufacturing composite membrane filter of polytetrafluoroethylene

A polytetrafluoroethylene, composite filtration technology, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of easy deformation, polytetrafluoroethylene microporous membrane can not be self-supporting, unfavorable folding and other problems , to achieve the effect of improving shrinkage and formability, high temperature sterilization physicochemical properties, and adjustable compound parameters

Inactive Publication Date: 2007-12-26
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a manufacturing equipment for a polytetrafluoroethylene supported composite filter membrane in view of the above-mentioned current state of the art, and the support material can be effectively laminated to the polytetrafluoroethylene membrane through the special manufacturing equipment On the surface, not only the lamination is firm, but the yield of the product and the service life of the product are improved, and the air permeability of the polytetrafluoroethylene microporous filter membrane is not affected; the present invention overcomes that a single polytetrafluoroethylene microporous filter membrane cannot automatically Support, easy to deform, not conducive to folding and processing into the defects of commonly used pleated filter elements, and maintain the original membrane structure and membrane pore size, with little impact on air permeability, and greatly improve the shrinkage and molding of filter membrane materials sex

Method used

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  • Equipment for manufacturing composite membrane filter of polytetrafluoroethylene
  • Equipment for manufacturing composite membrane filter of polytetrafluoroethylene
  • Equipment for manufacturing composite membrane filter of polytetrafluoroethylene

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: The manufacturing equipment used by polytetrafluoroethylene support composite filter membrane, its structure includes feeding and winding transmission device 1, pressing device 2 and control device 3, and control device 3 outputs control signal to feeding and winding transmission device 1 and Pressing device 2, feeding and winding transmission device 1 includes PTFE microporous membrane feeding roller 11, support material feeding roller 12, composite film winding roller 13, PTFE microporous membrane feeding and driving Roller 14, supporting material feeding drive roller 15 and composite film winding drive roller 16, pressing device 2 consists of a heating composite roller 21 and a cooling composite roller 22 opposite to the heating composite roller 21 arranged up and down to form, The surface of the heating composite roller 21 is coated with mirror stainless steel, and the cooling composite roller 22 is coated with a rubber outer layer outside the stainless...

Embodiment 2

[0020] Embodiment two: the manufacturing equipment that polytetrafluoroethylene support composite filter membrane is used, basic structure is identical with embodiment one, and difference is that pressing device 2 is made of two heating composite rollers 21 and with heating composite roller 21 opposite Two cooling composite rolls 22 are arranged up and down to form.

[0021] In the above-mentioned embodiments, the heating device 24 has no special requirements, and it can be an electric heating tube with oil, water, or gas as the medium, or adopt gas heating, infrared heating, microwave heating, high-frequency heating, radiation heating, steam heating, etc. to heat The device 24 can be arranged inside the heating composite roller 21, also can be arranged outside the heating composite roller 21, or both inside and outside.

[0022] There is no special requirement for the cooling device 25, and water cooling or oil cooling can also be used.

[0023] The temperature measuring ele...

Embodiment 3

[0026]Embodiment 3: It is manufactured by laminating a polytetrafluoroethylene microporous filter membrane with a layer of polypropylene screen, adjusting the parameters of the equipment, and compounding: ① Feed the polytetrafluoroethylene microporous filter membrane The polytetrafluoroethylene microporous filter membrane on the roller and the polypropylene screen set on the supporting material feeding roller are conveyed to the pressing device composed of heating composite rollers and cooling composite rollers arranged up and down through the transmission control system In the process, make the polytetrafluoroethylene microporous filter membrane close to the heating composite roller, and make the polypropylene screen mesh close to the cooling composite roller; ②Through the heating device composed of 18 halogen lamps evenly arranged in the heating composite roller Make the surface temperature of the heating composite roller be 300°C, and make the surface temperature of the cool...

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Abstract

The invention publishes a preparation plant for producing polytetrafluoroethylene composite filter membrane, which includes feeding windin gearing, stitching device and control device. The feeding winding gearing includes roller of polytetrafluoroethylene, roller of backing material, roller of composite membrane. The characteristic is that the stitching device includes the roller of rotate speed control device and the roller of cooling. The pressure gearing is fixed on either of the roller of rotate speed control device and the roller of cooling. The heater is fixed on the roller of heating. The cooling device is fixed on the roller of cooling. Both of them have measure temperature component. The composite filter membrane can improve the contractibility and mould greatly and can also hold the shape and structure of polytetrafluoroethylene composite filter membrane.

Description

technical field [0001] The invention relates to a filter membrane manufacturing equipment, in particular to a polytetrafluoroethylene supported composite filter membrane manufacturing equipment. Background technique [0002] Among polymer materials, polytetrafluoroethylene (PTFE) material has outstanding performance; high temperature resistance, acid and alkali resistance, organic solvent, non-toxic and biocompatibility. When the stretched polytetrafluoroethylene microporous membrane is used for gas or liquid filtration, it has a larger microporous membrane than other polymer materials (such as regenerated cellulose, nylon, polyvinylidene fluoride, polyethersulfone). Open porosity, better particle interception and durability and other comprehensive properties, are currently widely used filter materials in chemical, medical, food, electronics and other fields. However, before the filter membrane is actually applied in the form of a folded filter element, the filter membrane ...

Claims

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Application Information

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IPC IPC(8): B01D71/36B01D69/10B01D69/12
Inventor 肖通虎陈珊妹
Owner NINGBO UNIV