Reverse osmosis membrane shell sealing structure

Abstract

The utility model discloses a reverse osmosis membrane shell sealing structure. The reverse osmosis membrane shell sealing structure comprises a membrane shell and an end cover assembly arranged in the inner space of the membrane shell, the end cover assembly comprises an end cover bearing plate, an end cover sealing plate and a U-shaped end cover sealing ring; the end cover bearing plate is connected with the membrane shell, the end cover sealing plate is arranged on one side of the end cover bearing plate and connected with the membrane shell, and the middle of the end cover sealing plate penetrates through the end cover bearing plate; one end of the U-shaped end cover sealing ring is connected with one end of the end cover sealing plate and located on the inner wall of the membrane shell, and a U-shaped opening faces the interior of the membrane shell; the U-shaped end cover sealing ring is tightly attached to the inner wall of the membrane shell and the end cover sealing plate under the action of pressure to form self-pressure sealing. According to the device, the self-pressure sealing function of the U-shaped end cover sealing ring is utilized, so that the sealing effect of the reverse osmosis membrane shell during high-pressure operation is improved; and when the equipment is stopped, the pressure of the internal medium is zero, and the pressure between the U-shaped sealing ring and the end cover sealing plate only comes from the natural tension of the U-shaped sealing ring, so that the U-shaped sealing ring is very easy to disassemble.

Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis membrane housing technology, and in particular to a reverse osmosis membrane housing sealing structure. Background Technology

[0002] During high-pressure operation, the internal pressure of the reverse osmosis membrane housing is high, placing stringent requirements on its sealing performance. Existing reverse osmosis membrane housing sealing structures typically employ O-rings, which are prone to leakage under high-pressure conditions. As pressure increases, the O-rings undergo compression deformation, reducing the contact pressure at the sealing surface and lowering the sealing effect. Furthermore, O-rings are susceptible to creep during operation, leading to a decline in sealing performance. Additionally, the deformed O-rings generate significant frictional resistance against the inner wall of the membrane housing, making installation and disassembly inconvenient and increasing maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a reverse osmosis membrane housing sealing structure to solve the technical problems of poor sealing effect and inconvenient disassembly of the reverse osmosis membrane housing under high pressure operation in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides a reverse osmosis membrane housing sealing structure, including a membrane housing and an end cap assembly disposed in the internal space of the membrane housing, wherein the end cap assembly is connected to the membrane housing;

[0005] The end cap assembly includes an end cap pressure plate, an end cap sealing plate, and a U-shaped end cap sealing ring.

[0006] The end cap pressure plate is connected to the membrane shell; the end cap sealing plate is disposed on one side of the end cap pressure plate and connected to the membrane shell, and the middle part of the end cap sealing plate passes through the end cap pressure plate; one end of the U-shaped end cap sealing ring is connected to the end cap sealing plate, located on the inner wall of the membrane shell, and the U-shaped opening faces the inside of the membrane shell;

[0007] Under pressure, the U-shaped end cap sealing ring fits tightly against the inner wall of the membrane shell and the end cap sealing plate to form a self-pressure seal.

[0008] Furthermore, the inner wall of the membrane shell is provided with a groove, the U-shaped end cap sealing ring is disposed in the groove, and the end of the U-shaped end cap sealing ring connected to the end cap sealing plate is located outside the groove.

[0009] Furthermore, the shape of the groove matches the shape of the U-shaped end cap sealing ring.

[0010] Furthermore, the end cap assembly also includes a pressure plate retaining ring, which is disposed on the other side of the end cap pressure plate and is located inside the membrane shell.

[0011] Furthermore, it also includes a water production channel that runs through the center of the end cap pressure plate, and the water production port of the water production channel is located on the other side of the end cap pressure plate.

[0012] Furthermore, it also includes an adapter, which is fitted onto the water production channel, and the end cap sealing plate is fitted onto the adapter.

[0013] Furthermore, it also includes a fastening nut, wherein the portion of the end cap sealing plate that passes through the end cap bearing plate and is located on the other side of the end cap bearing plate is provided with external threads, and the fastening nut engages with the external threads to fix the end cap bearing plate and the end cap sealing plate.

[0014] Furthermore, the U-shaped end cap sealing ring is made of an elastic material.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The reverse osmosis membrane housing sealing structure proposed in this utility model adopts a U-shaped end cap sealing ring. When the reverse osmosis membrane housing is running under high pressure, the greater the pressure, the stronger the adhesion between the U-shaped end cap sealing ring and the inner wall of the membrane housing and the end cap sealing plate, forming a self-pressure sealing effect and improving the sealing performance. When the equipment is shut down, the internal medium pressure is zero, and the pressure between the U-shaped sealing ring and the end cap sealing plate comes only from the natural tension of the U-shaped sealing ring, resulting in very little resistance, which makes it very easy to disassemble the U-shaped sealing ring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the reverse osmosis membrane housing sealing structure in one embodiment of the present invention;

[0018] Figure 2 This is a side view of the reverse osmosis membrane housing sealing structure in one embodiment of the present invention;

[0019] Figure 3 for Figure 2 AA section view (the membrane shells on both sides of the U-shaped end cap seal are not shown).

[0020] Reference numerals: 1. Membrane housing; 2. Fastening nut; 3. End cap sealing plate; 4. U-shaped end cap sealing ring; 5. End cap pressure plate; 6. Product water channel; 7. Pressure plate retaining ring; 8. Adapter. Detailed Implementation

[0021] The following is a more detailed description of a reverse osmosis membrane housing sealing structure of the present invention with reference to schematic diagrams, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0022] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0023] like Figures 1 to 3 As shown in the figure, this utility model embodiment proposes a reverse osmosis membrane housing sealing structure, including a membrane housing 1 and an end cap assembly disposed in the internal space of the membrane housing 1, wherein the end cap assembly is connected to the membrane housing 1.

[0024] Specifically, the end cap assembly includes an end cap sealing plate 3, a U-shaped end cap sealing ring 4, an end cap pressure plate 5, and a pressure plate retaining ring 7.

[0025] The end cap pressure plate 5 is connected to the membrane shell 1, and the end cap sealing plate 3 is disposed on one side of the end cap pressure plate 5 and connected to the membrane shell 1; the middle part of the end cap sealing plate 3 passes through the end cap pressure plate 5.

[0026] One end of the U-shaped end cap sealing ring 4 is connected to the end cap sealing plate 3, located on the inner wall of the diaphragm housing 1, with the U-shaped opening facing the inside of the diaphragm housing 1. When there is no medium pressure or the medium pressure is low inside the diaphragm housing 1, the U-shaped end cap sealing ring 4 maintains a certain shape due to its own elasticity. When the medium pressure increases, due to the U-shaped structure of the U-shaped end cap sealing ring 4, the medium pressure pushes the U-shaped end cap sealing ring 4 towards the diaphragm housing 1 and the end cap sealing plate 3, causing the U-shaped end cap sealing ring 4 to fit against the diaphragm housing 1 and the end cap sealing plate 3. The greater the medium pressure, the greater the adhesion force between the U-shaped end cap sealing ring 4 and the inner wall of the diaphragm housing and the circumference of the end cap sealing plate 3. This results in a tighter fit between the U-shaped end cap sealing ring 4 and the inner wall of the diaphragm housing and the circumference of the end cap sealing plate 3. In other words, under the action of medium pressure, the U-shaped end cap sealing ring 4 forms a self-pressure seal by tightly adhering to the inner wall of the diaphragm housing and the circumference of the end cap sealing plate 3. This self-pressure seal can automatically adapt to pressure changes, providing a more stable sealing effect.

[0027] The U-shaped end cap sealing ring 4 is made of an elastic material, specifically commonly used sealing materials such as rubber. Because the U-shaped sealing ring 4 has a certain degree of elasticity and toughness, it can fit tightly after compression, thus providing excellent sealing performance.

[0028] In this embodiment, the inner wall of the membrane housing 1 is provided with a groove, and the U-shaped end cap sealing ring 4 is disposed in the groove. One end of the U-shaped end cap sealing ring 4 connected to the end cap sealing plate 3 is located outside the groove and is tightly connected to the end cap sealing plate 3. The U-shaped sealing ring 4 is fixed in the groove. When operating under high pressure, the self-pressure sealing function of the U-shaped sealing ring 4 combines with the limiting function of the groove to effectively prevent medium leakage, thereby improving the sealing effect.

[0029] The shape of the groove matches the shape of the U-shaped end cap sealing ring 4, so that the U-shaped end cap sealing ring 4 can better contact the inner wall of the membrane shell 1 and the periphery of the end cap sealing plate 3, thereby making a tighter fit under the action of medium pressure, improving the sealing effect and reducing the possibility of leakage.

[0030] In this embodiment, the pressure plate retaining ring 7 is disposed on the other side of the end cap pressure plate 5, and the pressure plate retaining ring 7 is located inside the membrane shell 1. The pressure plate retaining ring 7 is used to fix the end cap pressure plate 5 and prevent the end cap pressure plate 5 from displacing or falling off under the action of medium pressure.

[0031] In this embodiment, the reverse osmosis membrane housing sealing structure also includes a permeate channel 6, an adapter 8, and a fastening nut 2.

[0032] The water production channel 6 passes through the center of the end cover pressure plate 5, and the water production port of the water production channel 6 is located on the other side of the end cover pressure plate 5, which facilitates improving the efficiency of water flow and reducing pressure loss.

[0033] The adapter 8 is fitted onto the water production channel 6, and the end cap sealing plate 3 is fitted onto the adapter 8. The adapter 8 serves as a transition interface between the water production channel 6 and the end cap sealing plate 3, ensuring accurate docking and cooperation between the water production channel 6 and the end cap sealing plate 3, and ensuring the airtightness between the water production channel 6 and the external system to prevent leakage.

[0034] The end cap sealing plate 3 has an external thread at the portion that passes through the end cap bearing plate 5 and is located on the other side of the end cap bearing plate 5. The fastening nut 2 engages with the external thread to fix the end cap bearing plate 5 and the end cap sealing plate 3, thereby improving the sealing performance of the end cap assembly and preventing water or other liquids from leaking between the end cap bearing plate 5 and the end cap sealing plate 3.

[0035] In summary, the reverse osmosis membrane housing sealing structure proposed in this utility model utilizes a U-shaped end cap sealing ring. When the reverse osmosis membrane housing is operating under high pressure, the U-shaped end cap sealing ring fits tightly against the inner wall of the membrane housing, forming a self-pressure sealing effect and improving sealing performance. When the equipment is shut down, because the internal medium pressure is zero, the pressure between the U-shaped sealing ring and the end cap sealing plate comes only from the natural tension of the U-shaped sealing ring, resulting in very little resistance, which makes the U-shaped sealing ring very easy to disassemble.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A reverse osmosis membrane housing sealing structure, characterized in that, It includes a membrane housing and an end cap assembly disposed within the internal space of the membrane housing, the end cap assembly being connected to the membrane housing; The end cap assembly includes an end cap pressure plate, an end cap sealing plate, and a U-shaped end cap sealing ring. The end cap pressure plate is connected to the membrane shell; the end cap sealing plate is disposed on one side of the end cap pressure plate and connected to the membrane shell, and the middle part of the end cap sealing plate passes through the end cap pressure plate; one end of the U-shaped end cap sealing ring is connected to the end cap sealing plate, located on the inner wall of the membrane shell, and the U-shaped opening faces the inside of the membrane shell; Under pressure, the U-shaped end cap sealing ring fits tightly against the inner wall of the membrane shell and the end cap sealing plate to form a self-pressure seal.

2. The reverse osmosis membrane housing sealing structure as described in claim 1, characterized in that, The inner wall of the membrane shell is provided with a groove, the U-shaped end cap sealing ring is disposed in the groove, and the end of the U-shaped end cap sealing ring connected to the end cap sealing plate is located outside the groove.

3. The reverse osmosis membrane housing sealing structure as described in claim 2, characterized in that, The shape of the groove matches the shape of the U-shaped end cap sealing ring.

4. The reverse osmosis membrane housing sealing structure as described in claim 1, characterized in that, The end cap assembly also includes a pressure plate retaining ring, which is disposed on the other side of the end cap pressure plate and is located inside the membrane shell.

5. The reverse osmosis membrane housing sealing structure as described in claim 1, characterized in that, It also includes a water production channel that runs through the center of the end cap pressure plate, and the water production outlet of the water production channel is located on the other side of the end cap pressure plate.

6. The reverse osmosis membrane housing sealing structure as described in claim 5, characterized in that, It also includes an adapter, which is fitted onto the water production channel, and the end cap sealing plate is fitted onto the adapter.

7. The reverse osmosis membrane housing sealing structure as described in claim 1, characterized in that, It also includes a fastening nut, wherein the portion of the end cap sealing plate that passes through the end cap bearing plate and is located on the other side of the end cap bearing plate is provided with an external thread, and the fastening nut engages with the external thread to fix the end cap bearing plate and the end cap sealing plate.

8. The reverse osmosis membrane housing sealing structure as described in claim 1, characterized in that, The U-shaped end cap sealing ring is made of elastic material.

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