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Anti-osmosis nanofiltration membrane assembly

A nanofiltration membrane and reverse osmosis technology, which is applied in the field of nanofiltration membrane modules and reverse osmosis, can solve the problems of leaking O-rings and grooves, affecting the quality of pure water, and reducing the sealing effect, so as to increase stability and seal non-toxic, not easy to foul and accelerate the effect of collection

Active Publication Date: 2018-11-06
杭州海纳环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing reverse osmosis membrane filtration structure mainly includes a central tube and a membrane element wound on the central tube. The pure water end seal of the existing membrane element adopts double O-ring quick-insert type, which is purely leak-proof. Risks—such as O-rings and grooves are not tightly matched, leakage caused by gaps caused by uneven pressure sloshing, etc.
And because the surface of the inner wall of the membrane shell is smooth, the water retaining ring on the membrane element is prone to slipping when it is under pressure, resulting in a decrease in the sealing effect and affecting the quality of pure water.

Method used

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  • Anti-osmosis nanofiltration membrane assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 A reverse osmosis and nanofiltration membrane assembly shown includes a central tube 1, a filter membrane element 2, a water retaining ring 3 and a casing, and is characterized in that the filter membrane element is rolled together with the center tube as the center, The shell includes an upper end face 4 and a cylinder body 5 containing a lower end face, the central tube includes a pipe body and the surface of the pipe body is evenly distributed with water collection holes, the pure water end of the pipe body is set as an external threaded interface 14, and the thread An O-shaped gasket is arranged at the interface, and an internal thread 6 corresponding to the pure water end of the center pipe is provided on the lower end surface of the cylinder body containing the lower end surface, and the two are threadedly connected; the water inlet port of the filter membrane element is sleeved with The water retaining ring, the edge of the water retaining ring p...

Embodiment 2

[0025] As described in Example 1, the reverse osmosis and nanofiltration membrane modules differ in that the water inlet grid used in the filtration membrane element is not a common grid, and the water inlet grid includes latitude and warp Woven into a diamond-shaped grid, the weft and warp are cylindrical silk threads, and a helical continuous diversion groove B is made on the surface of the cylindrical silk thread A; the material of the cylindrical silk thread is PP, and the silk thread The diameter is 0.02in, and the depth of the continuous diversion groove is 0.01in. Inlet mesh such as image 3 As shown, the silk thread as Figure 4 shown.

Embodiment 3

[0027] Reverse osmosis and nanofiltration membrane modules as described in Example 2, the difference is that the central tube is as Figure 5 As shown, the pipe body 11 and the surface of the pipe body are evenly distributed with water collection holes, the pure water end of the pipe body is set as an external threaded interface 11, and an O-shaped gasket is arranged at the threaded interface, and the water collection hole includes a round hole 12, a circle Diversion grooves 13 of vortex helical structure are uniformly distributed around the hole 12, and the diversion grooves gradually become shallower from the water collection hole to the outside; four diversion grooves of the vortex helical structure are provided.

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Abstract

The invention discloses an anti-osmosis nanofiltration membrane center pipe. The anti-osmosis nanofiltration membrane center pipe comprises the center pipe, a filter membrane element, a dash loop anda housing, the center pipe comprises a pipe body and water-collection holes uniformly distributed at the surface of the pipe body, an external thread interface is arranged at a pure water end of the pipe body, an O-shaped gasket is arranged at the external thread interface, and an internal screw thread corresponding to the pure water end of the center tube is arranged at a lower transverse plane of the cylindrical shell containing the lower transverse plane and realize threaded connection. the dash loop is sleeved at a water inlet port of the filter membrane element, the edge of the dash loopis projected outside the filter membrane element, and covers a cylindrical shell port containing the lower transverse plane, and the upper transverse plane of the housing clamps the edge of the dash loop. The dash loop is closely fitted with the membrane housing, the external membrane housing can be sealed, the membrane element is sealed, and cannot easily fallen off.

Description

technical field [0001] The invention belongs to the technical field of water purification and filtration, in particular to a reverse osmosis and nanofiltration membrane module. Background technique [0002] With the improvement of people's living standards, household water treatment equipment is used by more and more families, and water purifier products using reverse osmosis and nanofiltration membrane elements are becoming more and more popular because of their small size and convenient installation. Ten thousand households. The existing reverse osmosis membrane filtration structure mainly includes a central tube and a membrane element wound on the central tube. The pure water end seal of the existing membrane element is a double O-ring quick-plug type. This structure is purely leak-proof. Risks—such as the O-ring and the groove are not tightly matched, and leakage caused by gaps caused by uneven pressure sloshing, etc. And because the surface of the inner wall of the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/06
CPCB01D63/06Y02A20/131
Inventor 张晓龙唐崧棉
Owner 杭州海纳环保技术有限公司