An integral end face sealing plate for EDI membrane stack

Abstract

The utility model discloses an integral end face sealing pad dedicated to an EDI membrane stack. Two groups of water inlet holes and water outlet holes are provided on the hot-melt elastomer molded pad. The water inlet holes and the water outlet holes are provided with connecting pipes at the positions of the pads, and a high-density polyethylene threaded interface is installed outside the connecting pipe. The threaded interface has an external thread for connecting the water inlet pipe and the water outlet pipe. The inner side of the pad is provided with a sealing ring that is integral with the pad, and the outer periphery of the pad is provided with a plurality of mounting holes. The shape of the pad is a quadrilateral that is parallel to each other up and down and left and right and has rounded chamfers. Compared with the prior art, the beneficial effects of the utility model are as follows: after the high-density polyethylene threaded interface is damaged, it can be replaced separately without the need for overall replacement. The water inlet and outlet and the sealing pad are an integral whole, and there is no narrow gap at the inner hole to form a dead water zone, and no cleaning is required. The sealing effect is good, and water leakage can be solved by tightening the sealing screws.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial clean water production, in particular to an integral end face sealing pad dedicated to an EDI membrane stack. Background Art

[0002] EDI, also known as continuous electrodialysis technology, scientifically integrates electrodialysis technology and ion exchange technology. Through the selective permeation of cations and anions by cation and anion membranes and the exchange of ions in water by ion exchange resins, directional migration of ions in water is achieved under the action of electric fields, thereby achieving deep purification and desalination of water. It has the advantages of advanced technology, compact structure and easy operation. The existing end face sealing structure of the electrodeionization membrane stack is to open a sealing groove on a high-density polyethylene plate and install an "O" type sealing ring in the sealing groove to achieve sealing, such as Figure 3 As shown. Its disadvantages are: the inlet and outlet must be connected with the inner hole of the high-density polyethylene board using external threads. If the inner hole thread is damaged, the high-density polyethylene board needs to be replaced as a whole. A dead water area is formed between the inner side of the sealing ring and the circular hole on the polyethylene board, which is easy to breed microorganisms and is not easy to clean after contamination. The sealing effect is not good and it is easy to leak. Utility Model Content

[0003] The utility model aims to provide an integral end face sealing pad dedicated to an EDI membrane stack, which changes the connection mode with a water inlet pipe and a water outlet pipe and is integrally formed by adopting a hot-melt elastomer.

[0004] The utility model is implemented as follows: an integral end face sealing gasket specially used for EDI membrane stack, two groups of water inlet holes and water outlet holes are arranged on the gasket, connecting pipes are arranged at the positions of the water inlet holes and the water outlet holes, a threaded interface is installed outside the connecting pipe, and the threaded interface has external threads for connecting the water inlet pipe and the water outlet pipe, a sealing ring is arranged on the inner side surface of the gasket, and a plurality of mounting holes are arranged on the outer periphery of the gasket.

[0005] Furthermore, the threaded interface material is high-density polyethylene.

[0006] Furthermore, the pad is in the shape of a quadrilateral which is parallel to each other vertically and horizontally and has rounded chamfers.

[0007] Furthermore, the material of the pad is hot-melt elastomer.

[0008] Compared with the prior art, the utility model has the following beneficial effects: after the high-density polyethylene threaded interface is damaged, it can be replaced separately without replacing the whole. The water inlet and outlet and the sealing pad are a whole, there is no narrow gap in the inner hole, dead water area cannot be formed, and cleaning is not required. The sealing effect is good, and water leakage can be solved by tightening the sealing screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 This is the outside view of the pad.

[0011] Figure 2 This is the inside view of the pad.

[0012] Figure 3 This is a schematic diagram of the original design structure. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1-2 As shown, an integral end face sealing pad for EDI membrane stack is provided on the pad 1. Two groups of water inlet holes 2 and water outlet holes 4 are provided on the pad 1. The water inlet holes 2 and water outlet holes 4 are provided with connecting pipes integrally with the pad. A threaded interface 3 is installed outside the connecting pipe. The threaded interface 3 has external threads for connecting the water inlet pipe and the water outlet pipe. A sealing ring 5 integral with the pad is provided on the inner side of the pad. A plurality of mounting holes 6 are provided on the outer periphery of the pad. The threaded interface 3 is made of high-density polyethylene. The shape of the pad is a quadrilateral that is parallel to each other up and down and left and right and has rounded chamfers. The material of the pad is a hot-melt elastomer. After the high-density polyethylene threaded interface is damaged, it can be replaced separately without replacing the pad as a whole. The connecting pipes and the sealing pad of the water inlet and outlet are an integral whole. There is no thread at the inner hole of the water inlet and outlet, and there is no narrow gap, so no dead water zone can be formed and no cleaning is required. The sealing effect is good, and water leakage can be solved by tightening the sealing screws.

[0015] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An integral end face sealing plate for EDI membrane stack, characterized in that: Two groups of water inlet holes and water outlet holes are provided on the pad, and connecting pipes are provided at the positions of the water inlet holes and the water outlet holes, and a threaded interface is installed outside the connecting pipe. The threaded interface has an external thread for connecting the water inlet pipe and the water outlet pipe. A sealing ring is provided on the inner side of the pad, and a plurality of mounting holes are provided on the outer periphery of the pad. The threaded interface is made of high-density polyethylene, and the pad is made of hot-melt elastomer.

2. The EDI membrane stack dedicated integral end face sealing gasket according to claim 1, characterized in that: The shape of the pad is a quadrilateral which is parallel to each other vertically and horizontally and has rounded chamfers.

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