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Membrane core preload structure

A fastening structure and membrane core technology, applied in the direction of membrane, membrane technology, semi-permeable membrane separation, etc., can solve problems such as leakage, small plastic deformation of membrane filtration unit, weakened pre-tightening force of nuts, etc., to reduce production and maintenance cost, improved convenience of use, and reduced maintenance frequency

Active Publication Date: 2018-10-09
成都美富特膜环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the basis of the above, the inventor found after further experiments and research that the main factor leading to the weakening of the pre-tightening force of the above-mentioned nuts is that the membrane filter unit is in an axially compressed state under the action of the pre-tightening structure of the membrane core, and the During the filtration process, due to the filter pressure difference, fluid impact force, etc., the membrane filtration unit is prone to small plastic deformation, which will affect the axial compression of the membrane core by the pre-tightening structure of the membrane core. If the axial compression state during installation is no longer maintained, the raw material fluid and / or purified fluid in the membrane filter module will easily leak and leak, which will seriously affect the sealing effect and filtration effect of the membrane filter module

Method used

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Experimental program
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Effect test

Embodiment 1

[0094] Such as figure 1 , Figure 6 , Figure 9 ~ Figure 11 , Figure 13 to Figure 16As shown, the membrane filtration assembly includes a housing 100, a mandrel 200, a membrane core 300, a first end cover assembly 410, a second end cover assembly 420, a membrane core preload structure, a raw material fluid input port 510, and a purified fluid output port 520 , the membrane core 300 is sleeved on the mandrel 200 and is composed of a plurality of membrane filtration units. The membrane core 300 composed of these membrane filtration units is set in an axially compressed state through the membrane core pre-tensioning structure and placed in the Between the first end cap assembly 410 and the second end cap assembly 420, the housing 100 is arranged outside the membrane core 300 and connected to the first end cap assembly 410 and the second end cap assembly 420 respectively; during filtration, After the raw material fluid flows in through the raw material fluid input port 510, th...

Embodiment 2

[0121] The structure of the membrane filtration module of embodiment 2 is roughly the same as that of embodiment 1, but the difference is that the output of the purified fluid in this embodiment adopts the publication number CN103657414A applied by the applicant, and the name is "separation and filtration of water entering and exiting at the same end membrane column and its The liquid discharge structure of the hollow mandrel 200 disclosed in the patent document "Method for Treating Feed Liquid". That is: the mandrel 200 is hollow tubular, and the mandrel 200 is provided with a through hole (not shown) that connects the second central hole 321 of each diaphragm 320 with the inner cavity of the mandrel 200. At this time, the The through hole is used as the guide structure 201, the lumen of the mandrel 200 is used as the drainage channel 522, and the shaft end opening of the mandrel 200 is used as the purification fluid output port 520, without the need for the first flange 411 a...

Embodiment 3

[0124] Such as figure 2 , Figure 7 and Figure 8 As shown, the structure of the membrane filtration assembly of Embodiment 3 is substantially the same as that of Embodiment 1, but the difference is that the diverter plate 610 is located on the second sealing plate 422 of the second end cover assembly 420, and this structure is more conducive to ensuring The diverter plate 610 maintains radial balance relative to the core shaft 200, and further ensures the radial balance of the membrane core 300 installed on the diverter plate 610, which is more conducive to the uniform axial force of the membrane core 300 under the action of the raw material fluid, Avoid slight tilting deformation of the membrane core 300 due to uneven axial force. In addition, the side-inlet fluid distribution channel can utilize the force of the raw material fluid on the wall of the disk body above the fluid inlet hole 611 to push the disk body to drive the mandrel 200 to move in the axial direction, and...

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Abstract

The invention discloses a membrane core pre-tightening structure capable of better guaranteeing an axial pressing state of a membrane core. A membrane core sleeving a mandrel consists of a plurality of membrane filtration units and is set as the axial pressing state to be disposed between a first end cover component and a hanging second end cover component through the membrane core pre-tightening structure. During filtration, raw material fluid passes through all the membrane filtration units sequentially from a membrane mandrel axial end opposite to the second end cover component and then moves towards a membrane mandrel axial end opposite to the first end cover component. The membrane core pre-tightening structure comprises a hanging floating pressing mechanism moving towards the direction of axially pressing the membrane core during filtration, and the floating pressing mechanism comprises a fastening mechanism and a floating component, wherein the fastening mechanism is used for axially pressing the membrane core between the first end cover component and the second end cover component, and the floating component is arranged between the second end cover component and the membrane core and can be driven by the raw material fluid to move towards the direction of axially pressing the membrane core during filtration.

Description

technical field [0001] The invention relates to a membrane core pretension structure in the field of filtration and purification, in particular to a nanofiltration or reverse osmosis membrane core pretension structure in the field of water treatment. Background technique [0002] The applicant of the present application has developed a membrane filter assembly mainly used for sewage nanofiltration or reverse osmosis treatment. This membrane filter assembly includes a shell, a mandrel, a membrane core, a first end cover assembly, and a second end cover assembly. , membrane core pre-tightening structure, raw material fluid input port and purified fluid output port, the membrane core is sleeved on the mandrel and is composed of a plurality of membrane filtration units, and the membrane core composed of these membrane filtration units is preloaded through the membrane core The structure is arranged in an axially compressed state and placed between the first end cover assembly an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/00B01D63/00C02F1/44B01D61/08B01D61/10
CPCB01D61/00B01D61/025B01D61/027B01D61/08B01D61/10B01D63/00B01D2313/025B01D2313/08C02F1/441C02F1/442
Inventor 宋岱峰韩亮
Owner 成都美富特膜环保科技有限公司