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Pre-tightening structure of membrane core assembly for sewage filtration

A component and sewage technology, applied in the direction of osmosis/dialysis water/sewage treatment, membrane, membrane technology, etc., can solve problems such as nut loosening, and achieve the effect of ensuring sealing, ensuring filtration effect, and stabilizing sewage filtration operation

Inactive Publication Date: 2018-08-10
MIANYANG FEIYUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pre-tightening structure of a membrane core assembly for sewage filtration, to solve the problem that the nuts arranged on the mandrel in the membrane core pre-tightening structure will loosen after working for a period of time during the long-term use of the membrane assembly

Method used

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  • Pre-tightening structure of membrane core assembly for sewage filtration
  • Pre-tightening structure of membrane core assembly for sewage filtration
  • Pre-tightening structure of membrane core assembly for sewage filtration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like Figure 1-Figure 6 As shown, the pre-tightening structure of the membrane core assembly for sewage filtration of the present invention includes a mandrel 1, a pre-tightening nut 2 and a limit nut 9. The pre-tightening nut 2 is threadedly connected to the mandrel 1, and is sleeved on the mandrel The diaphragm assembly on The axes coincide;

[0026] On the end face of the pre-tightening nut 2 close to the annular groove 3, there are several limiting devices symmetrical along the axis of the mandrel 1, and the limiting devices include a connecting block 4, a spring 5, a supporting block 6 and an insert that are connected in sequence. Block 7, one end of the connecting block 4 is hinged with the end face of the pre-tightening nut 2, and the other end of the connecting block 4 is connected with one end of the supporting block 6 through a spring 5, and the expansion and contraction direction of the spring 5 is parallel to the direction of the mandrel 1. Axis, the side ...

Embodiment 2

[0031] like Figure 1-Figure 6 As shown in the pre-tightening structure of the membrane core assembly for sewage filtration of the present invention, the cross-section of the annular groove 3 is semicircular, the insert block 7 is hemispherical, and its flat end is connected to the support block 6, and its spherical end is connected to the support block 6. The groove bottom of the annular groove 3 is in contact, and the spherical diameter of the insert 7 matches the diameter in the cross-section of the annular groove 3 .

Embodiment 3

[0033] like Figure 1-Figure 6 As shown, in the pre-tightening structure of the membrane core assembly for sewage filtration of the present invention, the spring 5 is a helical cylindrical compression spring.

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Abstract

The invention discloses a pre-tightening structure of a membrane core assembly for sewage filtration. The pre-tightening structure comprises a core shaft, a pre-tightening nut and a limiting nut, andan annular groove is formed in the core shaft. Limiting devices are arranged on the pre-tightening nut, each limiting device comprises a connecting block, a spring, a supporting block and an insertingblock, one end of each connecting block is hinged to the end face of the pre-tightening nut, the other end of each connecting block is connected to one end of the corresponding supporting block through the corresponding spring, and the side walls, close to the core shaft, of the supporting blocks are connected to the inserting blocks. When the pre-tightening nut is pressed against a diaphragm assembly sleeving the core shaft, the springs are in a compressed state. The side walls, away from the core shaft, of the connecting blocks are all turned into arc-shaped surfaces protruding outward, threads are arranged on the arc-shaped surfaces respectively, the limiting nut sleeves the core shaft, the limiting devices are all located in a threaded hole of the limiting nut, and the limiting nut isin threaded connection with the connecting blocks. According to the pre-tightening structure of the membrane core assembly for sewage filtration, the pre-tightening nut is prevented from being loosened by itself so that a membrane filtration assembly can be stably used for performing sewage filtration work.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a pre-tightening structure of a membrane core assembly for sewage filtration. Background technique [0002] The existing sewage filtration device includes a membrane filter assembly and a carrier box. The membrane filter assembly includes a mandrel, a diaphragm assembly, a first end cap assembly, a second end cap assembly, a membrane core preloading structure, a raw fluid input port and a purification fluid. At the output port, the diaphragm assembly is sleeved on the mandrel, and each diaphragm in the diaphragm assembly is positioned on the mandrel by the positioning ring. The diaphragm and the locating ring are arranged in an axially compressed state by the diaphragm core preloading structure, and are placed between the first end cap assembly and the second end cap assembly, and are prevented from being in the carrying box. During filtration, after the raw material flui...

Claims

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Application Information

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IPC IPC(8): B01D63/08C02F1/44
CPCB01D63/082B01D2313/025B01D2313/04C02F1/44
Inventor 李艳芬
Owner MIANYANG FEIYUAN TECH CO LTD