Three-layer composite chemical-resistant partition plate

Abstract

The utility model discloses a three-layer composite chemical-resistant partition plate which comprises an annular partition plate frame, a partition plate net is arranged at the position of a through hole in the middle of the partition plate frame, a liquid channel is arranged on the partition plate frame, the partition plate frame is of an extruded three-layer composite structure, the middle layer of the three-layer composite structure is a PP layer, and the two outer layers of the three-layer composite structure are EPDM layers. According to the invention, the plate with a three-layer structure is formed by compounding during extrusion through an extruder, then the partition plate frame is formed through mold pressing and cutting, the PP layer in the middle of the partition plate frame provides enough supporting brightness, the EPDM layer on the surface layer provides sealing performance, and the three-layer structure is a plasticized structure, so that compared with a bonding rubber sealing layer, the three-layer structure is higher in firmness and more efficient to manufacture.

Description

Technical Field

[0001] The utility model relates to an electrodialysis separator, in particular to a three-layer composite chemical-resistant separator. Background Art

[0002] The separator in an electrodialyzer is a frame device sandwiched between the anion and cation membranes, thus forming a fresh water chamber or a concentrated water chamber. The separator plays a role in supporting and separating the anion and cation membranes, preventing the membrane surfaces from overlapping and short-circuiting. At the same time, it forms a water flow channel, making the water flow evenly distributed, and can generate turbulence to play a stirring role, so as to enable ion diffusion, achieving the purpose of improving the desalination efficiency and reducing the power consumption.

[0003] The patent with the application number 202220081583.5 applied by our company discloses an electrodialysis separator, including a separator frame. Among them, a cavity is provided inside the separator frame, a separator mesh is provided inside the cavity, a plurality of first water distribution holes and second water distribution holes are provided at both the upper and lower ends of the separator frame, a plurality of water distribution channels are provided inside the separator frame, each water distribution channel is respectively communicated with each second water distribution hole and the cavity, each second water distribution hole is not communicated with the cavity, sealing layers are fixedly connected to both the front and rear side walls of the separator frame, and plugging devices are provided on both the left and right sides of the separator frame. The sealing layer is made of elastic silica gel material.

[0004] In the above patent, a silica gel sealing layer is separately provided on the separator frame. When manufacturing, it is necessary to consider the strength of the entire separator, the fixing method of the sealing layer, and the resistance of the sealing layer. At present, silica gel is generally fixed to the separator frame by glue, the process is complex, and the chemical resistance of the glue is poor, and it is easy to delaminate during use, resulting in sealing failure and ultimately affecting the electrodialysis effect.

[0005] Based on the deficiency in the prior art that by separately setting a silica gel sealing layer and bonding it with glue, it is easy to fall off and affect the electrodialysis effect, the utility model provides a three-layer composite chemical-resistant separator. Content of the Utility Model

[0006] Based on the deficiency in the prior art that by separately setting a silica gel sealing layer and bonding it with glue, it is easy to fall off and affect the electrodialysis effect, the utility model provides a three-layer composite chemical-resistant separator.

[0007] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0008] A three-layer composite chemical-resistant separator includes an annular separator frame. A separator mesh is provided at the through hole in the middle of the separator frame. A liquid channel is provided on the separator frame. The separator frame is an extruded three-layer composite structure. The middle layer of the three-layer composite structure is a PP layer, and both outer layers of the three-layer composite structure are EPDM layers.

[0009] Preferably, the liquid channel includes a plurality of first water holes and second water holes provided on both the upper and lower sides of the separator frame.

[0010] Preferably, the first-step water holes and the second-step water holes are arranged alternately.

[0011] Preferably, the liquid channel further includes a step water channel that corresponds to and communicates with the first-step water holes one by one.

[0012] Preferably, the other side of the step water channel extends to the through hole in the middle of the partition frame.

[0013] Preferably, the step water channels on one side all include a number of channel monomers arranged in a V-shape.

[0014] Preferably, the step water channels on the other side include a V-shaped groove and a straight groove provided at the end of the V-shaped groove.

[0015] Preferably, a number of spacer plates are provided at the through hole, and the spacer plates separate the adjacent first-step water holes and second-step water holes.

[0016] Preferably, a number of mounting ears for installation are provided at the end of the partition frame, and mounting holes are provided on the mounting ears.

[0017] Preferably, the thickness of the PP layer is more than 3 times the thickness of the EPDM layer.

[0018] Compared with the prior art, the advantages of the present utility model are as follows: In this application, a three-layer structure plate is formed by compounding during extrusion by an extruder, and then a partition frame is formed by die pressing and cutting. The PP layer in the middle of the partition frame provides sufficient support brightness, while the EPDM layer on the surface provides sealing performance. The three-layer structure is a plasticized structure, which has stronger firmness compared to the bonded rubber sealing layer and is more efficient to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be used to limit the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 is a perspective view of the present application;

[0021] Figure 2 is an exploded view of the present application;

[0022] Figure 3 is a side view of the present application;

[0023] In the figure: 10, partition frame; 100, liquid channel; 101, PP layer; 102-1, 102-2, EPDM layer; 103, mounting ear; 104-1, first-step water hole; 104-2, second-step water hole; 105-1, 105-2, step water channel; 20, partition mesh; 30, spacer plate. Detailed implementation mode

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present invention.

[0025] It should be noted that similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0026] Embodiment 1

[0027] This embodiment mainly elaborates on the title of a three-layer composite chemical-resistant partition, which is as follows:

[0028] A three-layer composite chemical-resistant partition, referring to the attached Figures 1 - 3 , includes an annular partition frame 10. A partition mesh 20 is provided at the through hole in the middle of the partition frame 10. A liquid channel 100 is provided on the partition frame 10. The partition frame 10 is an extruded three-layer composite structure. The middle layer of the three-layer composite structure is a PP layer 101. After the PP material is plasticized, it has higher strength, while the outer EPDM layers 102-1, 102-2 provide sufficient chemical resistance and are used for sealing at the same time. The three-layer structure can be extruded in one step by an extruder. After forming, the liquid channel 100 is pressed out by hot pressing, cut, and then plasticized again. In summary, this structure not only provides a partition that meets strength, chemical resistance, and can be used for sealing, but also is more convenient and has higher efficiency in manufacturing.

[0029] Preferably, the liquid channel 100 includes a plurality of first-step water holes 104-1 and second-step water holes 104-2 provided on the upper and lower sides of the partition frame 10. Preferably, the first-step water holes 104-1 and the second-step water holes 104-2 are arranged alternately.

[0030] Preferably, the liquid channel 100 further includes step water channels 105-1 and 105-2 that correspond to and communicate with the first-step water holes 104-2 one by one. Preferably, the other sides of the step water channels 105-1 and 105-2 extend to the through holes in the middle of the partition frame 10. Preferably, each of the step water channels 105-2 on one side includes a number of channel monomers arranged in a shape of an eight, and this structure can make the incoming water flow more evenly dispersed. Preferably, each of the step water channels 105-1 on the other side includes a V-shaped groove and a linear groove provided at the end of the V-shaped groove, and this structure is more conducive to the collection of the outgoing water.

[0031] Preferably, a number of spacer plates 30 are provided at the through holes, and the spacer plates 30 separate the adjacent first-step water holes 104-1 and second-step water holes 104-2. The spacer plates 30 separate the space in the middle, and they can support the partition net 20 to prevent the partition net 20 from deforming.

[0032] Preferably, a number of mounting ears 103 for installation are provided at the ends of the partition frame 10, and mounting holes are provided on the mounting ears 103. The mounting ears 103 are used for the installation of two adjacent partitions, and when installing, they can be clamped and fixed in cooperation with bolts and nuts. The anion membrane and the cation membrane are arranged between two groups of adjacent partitions.

[0033] Preferably, the thickness of the PP layer 101 is more than 3 times the thickness of the EPDM layers 102-1 and 102-2. The thickness of the EPDM layers 102-1 and 102-2 only needs to meet the sealing requirements, so the thickness is reduced. After the thickness is reduced, it is beneficial to the opening of the water holes and the step water channels 105-1 and 105-2.

[0034] It should be noted that two first-step water holes 104-1 and three second-step water holes 104-2 are provided on each side. When installing, the anion membrane and the cation membrane are alternately arranged and clamped by the partitions to form water chambers at intervals. The above has introduced in detail a three-layer composite chemical-resistant partition provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the present invention and its core idea. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A three-layer composite chemical-resistant partition, comprising an annular partition frame, a partition mesh is provided at the through hole in the middle of the partition frame, and a liquid channel is provided on the partition frame, characterized in that, The partition frame is an extruded three-layer composite structure. The middle layer of the three-layer composite structure is a PP layer, and the two outer layers of the three-layer composite structure are both EPDM layers.

2. The three-layer composite chemical-resistant separator according to claim 1, wherein The liquid channels include a number of first-step water holes and second-step water holes provided on the upper and lower sides of the partition frame.

3. A three-layer composite chemical-resistant separator according to claim 2, characterized in that, The first-step water holes and the second-step water holes are arranged alternately.

4. A three-layer composite chemical-resistant separator according to claim 2, characterized in that, The liquid channels further include step water channels that correspond to and communicate with the first-step water holes one by one.

5. The three-layer composite chemical-resistant partition according to claim 4, wherein The other side of the step water channels extends to the through holes in the middle of the partition frame.

6. A three-layer composite chemical-resistant separator according to claim 4, wherein The step water channels on one side all include a number of channel monomers arranged in a figure-eight shape.

7. A three-layer composite chemical-resistant partition according to claim 6, characterized in that, The step water channels on the other side include a V-shaped groove and a straight groove provided at the end of the V-shaped groove.

8. A three-layer composite chemical-resistant separator according to claim 2, characterized in that, A number of spacer plates are provided at the through holes, and the spacer plates separate the adjacent first-step water holes and second-step water holes.

9. The three-layer composite chemical-resistant separator according to claim 1, characterized in that, A number of mounting ears for installation are provided at the ends of the partition frame, and mounting holes are provided on the mounting ears.

10. A three-layer composite chemical-resistant partition according to claim 1, characterized in that, The thickness of the PP layer is more than 3 times the thickness of the EPDM layer.

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