Back flushing filter

A filter and front-end cover technology, which is applied in the field of filter equipment manufacturing to achieve the effect of small footprint and high filtration efficiency

Inactive Publication Date: 2012-08-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a backflush filter, which overcomes the deficiency of the existing plate and frame filter press in filtering impurities in the acrylic spinning stock solution and provides an automatic backwash filter for the acrylic spinning stock solution device

Method used

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Examples

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Embodiment Construction

[0014] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0015] Such as figure 1 with 2 Shown, a kind of recoil filter, comprises the shell that is made up of front end cover 15, rear end cover 16 and tubular side, central drainage pipe 8, front piston 4, rear piston 5, connecting pipe 2 and screw rod 3, described shell A water inlet 10 and a water outlet 9 are installed on the outer side of the front end cover 15, and the water outlet 9 is installed in the center position of ...

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Abstract

The invention relates to a back flushing filter. A back flushing drainage port between a connecting pipe and a central drainage pipe is opened and closed through displacement of front and back two pistons and the connecting pipe under the control of a screw rod, and a filtrate flows reversely on a filtering layer due to the pressure change occurring on a water outlet after the drainage port is opened, so that impurities clamped in the filtering layer are flushed out of the drainage port. The back flushing filter is an acrylic fiber spinning raw liquid automatic back flushing filter which has the advantages of continuous operation, high filtering efficiency, small floor area, capability of recovering waste liquid and the like, gel particles, insoluble mechanical impurities and the like existing in a spinning raw liquid can be effectively filtered, and the spinnability of the acrylic fiber spinning raw liquid and the performance of fiber are ensured.

Description

technical field [0001] The invention belongs to the technical field of filter equipment manufacturing, in particular to a recoil filter. Background technique [0002] At present, because carbon fiber and its composite materials have a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, heat transfer and small thermal expansion coefficient, carbon fiber has become a kind of Important high-tech new materials required by industry. In the production of carbon fiber, the quality requirements of acrylic fiber (PAN) raw silk are very high. The content of impurities in the PAN precursor will seriously affect the carbon fiber fineness, tensile strength, fineness unevenness and strength unevenness. In the production of acrylic fiber, the plate and frame filter press is commonly used at present. Its working principle is that the hydraulic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/11B01D29/66D01D1/10
Inventor 甘学辉刘强王磊陈淮刘娜娜
Owner DONGHUA UNIV
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