Reverse osmosis membrane probe detection device

Abstract

The utility model belongs to the reverse osmosis membrane filtration purification technical field discloses a kind of reverse osmosis membrane probe detection device, including probe sampling assembly, connecting air bag, inflatable part and detection piece, by connecting air bag and inflatable part cooperation, since connecting air bag uses flexible telescopic material, by inflatable part to connect air bag inflation, make it expand to the interference fit between predetermined degree and end cover interface, build out sealing structure;Connecting air bag inside is equipped with the sampling hole for probe sampling assembly to pass through, both sealed sliding fit, so that probe sampling assembly keeps good seal in the process of plugging or axial movement;After detection is completed, release the gas in connecting air bag to take it out, and move to next end cover interface position, continue subsequent detection operation.Reverse osmosis membrane probe detection device can be adapted to the membrane shell end cover interface of multiple specifications and sizes, and overall structure is simple, assembly process is convenient, operation is efficient, improves detection efficiency and the convenience of on-site operation.

Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis membrane filtration and purification technology, and in particular to a reverse osmosis membrane probe detection device. Background Technology

[0002] In a reverse osmosis system, multiple membrane elements are typically connected in series, with their permeate outlets converging into a common central tube. Because multiple membrane elements operate in series, it's difficult to directly determine which membrane element is causing the problem when the overall system performance deteriorates. Therefore, the reverse osmosis probe method is commonly used for detection. This method involves inserting a thin, long probe sampling tube into the central permeate tube of the reverse osmosis membrane housing, extracting permeate samples from different membrane element locations, and testing parameters such as permeate conductivity at each point to determine the operating status of each membrane element.

[0003] Currently, reverse osmosis membrane housings come in various structural specifications, with common probe connection methods including internal and external thread connections. Different housing specifications require corresponding probe sampling assemblies with appropriate interface types to complete the testing. This not only increases the complexity of probe configuration but also makes probe installation and removal cumbersome, impacting testing efficiency and the convenience of on-site operation. Utility Model Content

[0004] The purpose of this invention is to provide a reverse osmosis membrane probe detection device that can be adapted to reverse osmosis membrane housings of different specifications. It features a simple structure, convenient assembly, and efficient operation, and can quickly connect to the membrane housing, thereby improving detection efficiency and enhancing the flexibility and convenience of on-site operation.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The reverse osmosis membrane probe detection device includes:

[0007] The probe sampling assembly is used to extend into the central tube of the membrane housing and sample the membrane elements connected in series one by one.

[0008] A connecting airbag is disposed at the end cap interface of the membrane shell. The connecting airbag is made of flexible and stretchable material and has a ring structure. Its outer diameter can be inserted into the end cap interface when it is not inflated. After being inflated, it forms an interference fit with the inner wall of the end cap interface. The connecting airbag has a sampling hole inside for the probe sampling component to pass through, and the probe sampling component forms a sealed sliding fit with the inner wall of the sampling hole.

[0009] An inflatable component is provided, wherein the connecting airbag is provided with an inflation port, the inflatable component is located outside the end cap interface, and the output end of the inflatable component is detachably connected to the inflation port for inflating the connecting airbag.

[0010] A detection element is disposed outside the end cap interface, and the input end of the detection element is connected to the output end of the probe sampling assembly for detecting water samples.

[0011] In some alternative embodiments, the permeation membrane probe detection device further includes a check valve installed between the inflation member and the connecting airbag.

[0012] In some alternative embodiments, the permeation membrane probe detection device further includes a vent valve installed between the check valve and the connecting airbag.

[0013] In some alternative embodiments, the probe sampling assembly includes a probe body and a sampling tube, the probe body is connected to the input end of the sampling tube, the output end of the sampling tube is connected to the detection element, and the sampling tube is in a sealed sliding fit with the sampling hole.

[0014] In some alternative embodiments, a sealing ring is provided on the inner wall of the sampling hole, and the sealing ring is in a sealing sliding fit with the sampling tube.

[0015] In some alternative embodiments, the sampling tube is provided with graduation lines.

[0016] In some alternative embodiments, the permeation membrane probe detection device further includes a sampling ball valve, which is installed at the input end of the detection element and connected to the probe sampling assembly.

[0017] In some alternative embodiments, the inflation component is an air pump.

[0018] In some alternative embodiments, the connecting airbag is a soft rubber airbag.

[0019] In some alternative embodiments, the detection device is a conductivity meter.

[0020] The beneficial effects of this utility model are:

[0021] This invention provides a reverse osmosis membrane probe testing device, including a probe sampling assembly, a connecting airbag, an inflation component, and a testing component. Through the coordinated operation of the connecting airbag and the inflation component, the connecting airbag can be inserted into the end cap interface of the membrane housing in an uninflated state. Subsequently, the inflation component inflates the connecting airbag to a predetermined extent, creating an interference fit between the connecting airbag and the end cap interface, thus constructing a sealed structure and effectively preventing water leakage from the end cap interface. The connecting airbag has a sampling hole for the probe sampling assembly to pass through, and the two components slide in a sealed manner, ensuring a good seal during insertion, removal, or axial movement of the probe sampling assembly. After testing, simply disassembling the inflation component and releasing the gas from the connecting airbag allows the connecting airbag to be removed from the current membrane housing end cap interface and moved to the end cap interface of the next reverse osmosis system to be tested, continuing subsequent testing operations. Because the connecting airbag is made of flexible and stretchable material, it can be adapted to membrane housing end cap interfaces of various specifications and sizes. The overall structure is simple, the assembly process is convenient, and the operation is efficient. It can quickly complete the sealing connection with the membrane housing end cap interface, thereby significantly improving the efficiency of membrane element testing and the flexibility and convenience of on-site operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the reverse osmosis membrane probe detection device in this utility model;

[0023] Figure 2 This is an assembly diagram of the reverse osmosis membrane probe detection device and the reverse osmosis membrane system in this utility model;

[0024] Figure 3 This is a cross-sectional view of the connecting airbag in this utility model.

[0025] In the picture:

[0026] 100. Membrane housing; 101. Central tube; 102. Membrane element; 103. End cap interface;

[0027] 1. Probe sampling assembly; 2. Connecting airbag; 3. Inflatable component; 4. Sampling port; 5. Check valve; 6. Vent valve; 7. Sealing ring; 8. Sampling ball valve. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] Please refer to Figures 1 to 3 As shown in the figure, this embodiment provides a reverse osmosis membrane probe detection device, including a probe sampling assembly 1, a connecting airbag 2, an inflation component 3, and a detection component (not shown in the figure). The probe sampling assembly 1 is used to extend into the central tube 101 of the membrane housing 100 and sample the membrane elements 102 connected in series one by one. The connecting airbag 2 is located at the end cap interface 103 of the membrane housing 100. The connecting airbag 2 is made of a flexible and stretchable material and has a ring structure. Its outer diameter can be inserted into the end cap interface 103 in the uninflated state, and expands after inflation to connect with the membrane elements. The inner wall of the end cap interface 103 is press-fitted. The connecting airbag 2 has a sampling hole 4 for the probe sampling assembly 1 to pass through, and a sealed sliding fit is formed between the probe sampling assembly 1 and the inner wall of the sampling hole 4. The connecting airbag 2 has an inflation port, and an inflation component 3 is located outside the end cap interface 103. The output end of the inflation component 3 is detachably connected to the inflation port for inflating the connecting airbag 2. The detection component is located outside the end cap interface 103, and the input end of the detection component is connected to the output end of the probe sampling assembly 1 for detecting water samples.

[0033] Through the coordinated operation of the connecting airbag 2 and the inflation component 3, the connecting airbag 2 can be inserted into the end cap interface 103 of the membrane housing 100 in the uninflated state. Then, the inflation component 3 inflates the connecting airbag 2 to a predetermined extent, creating an interference fit between the connecting airbag 2 and the end cap interface 103, thus constructing a sealed structure and effectively preventing water leakage from the end cap interface 103. The connecting airbag 2 has a sampling hole 4 through which the probe sampling component 1 passes. The inner wall of the sampling hole 4 forms a sealed sliding fit with the probe sampling component 1, ensuring a good seal during insertion, removal, or axial movement. The probe sampling component 1 can be inserted into the central tube 101 of the membrane housing 100 through the sampling hole 4, sequentially sampling multiple membrane elements 102 arranged in series. After sampling, the water sample is output through the probe sampling component 1 and introduced into a detection device, which then tests the water sample to determine the operating status of the corresponding membrane element 102. After testing, simply disassemble the inflation component 3 and release the gas inside the connecting airbag 2, retract the probe sampling component 1, and the connecting airbag 2 can be removed from the current membrane housing 100 end cap interface 103 and moved to the next reverse osmosis system end cap interface 103 to be tested, continuing subsequent testing operations. Because the connecting airbag 2 is made of flexible and stretchable material, it can adapt to various specifications and sizes of membrane housing 100 end cap interfaces 103. Its overall structure is simple, the assembly process is convenient, and the operation is efficient, enabling rapid sealing connection with the membrane housing 100 end cap interface 103. This significantly improves the efficiency of membrane element 102 testing and the flexibility and convenience of on-site operation.

[0034] For example, the connecting airbag 2 may be, but is not limited to, a soft rubber airbag, wherein the soft rubber material can expand when inflated and return to its original shape after deflation, satisfying the requirement of the connecting airbag 2 to "inflate-release-reuse" in the end cap interface 103 of the membrane shell 100.

[0035] For example, the testing device may be, but is not limited to, a conductivity meter, which is used to test the conductivity of the water sample produced in each membrane element 102, thereby determining the quality of the water produced by each membrane element 102.

[0036] In other embodiments, the detection element may also be a resistivity meter or a pH meter, which is not specifically limited here.

[0037] For example, the inflator 3 may be, but is not limited to, using an air pump, without specific limitation here.

[0038] Specifically, the probe sampling assembly 1 includes a probe body and a sampling tube. The probe body is connected to the input end of the sampling tube, and the output end of the sampling tube is connected to the detection element. The sampling tube and the sampling hole 4 are sealed and slidably fitted. The probe body is a rigid structure that serves as a guide and can also absorb water samples. The sampling tube is responsible for guiding the water sample to the detection element. The sampling tube and the sampling hole 4 in the connecting airbag 2 are sealed and slidably fitted, so that the sampling tube can slide axially during insertion or extraction while maintaining good sealing performance. This effectively prevents water sample leakage or external gas mixing during sampling, ensuring the stability and accuracy of the detection, while improving the flexibility of operation and the efficiency of on-site detection.

[0039] like Figure 3 As shown, more specifically, a sealing ring 7 is provided on the inner wall of the sampling hole 4. The sealing ring 7 is in a sealing sliding fit with the sampling tube. The sealing ring 7 wraps around the outer wall of the sampling tube to form a fit, which better improves the sealing effect between the sampling hole 4 and the sampling tube, prevents liquid or gas leakage, and ensures stable system pressure.

[0040] It is understandable that the sealing ring 7 may be made of silicone or rubber materials, but this is not limited to that.

[0041] In some optional embodiments, the sampling tube is provided with graduation lines, allowing operators to directly read the insertion depth of the sampling tube according to the graduation lines, thereby determining whether the probe tip has reached the position of the target membrane element 102. This allows for rapid position determination without the need for auxiliary measuring tools, reducing positioning time and improving on-site testing efficiency.

[0042] like Figure 1 As shown, in some optional embodiments, the permeate membrane probe detection device further includes a check valve 5, which is installed between the inflation component 3 and the connecting air bladder 2. When inflation stops or the inflation component 3 is disconnected, the check valve 5 can automatically close to prevent the gas inside the connecting air bladder 2 from flowing back to the inflation component 3, maintain the air pressure inside the connecting air bladder 2, and ensure that the connecting air bladder 2 can still form a reliable seal with the membrane housing 100 interface without relying on the inflation component 3, thus improving portability.

[0043] Furthermore, the reverse osmosis membrane probe detection device also includes a vent valve 6, which is installed between the check valve 5 and the connecting air bladder 2. After the detection is completed, the gas inside the connecting air bladder 2 can be quickly discharged by opening the vent valve 6, causing the air bladder to contract, which facilitates the removal of the device from the end cap interface 103 of the membrane housing 100, thereby accelerating the transfer of the reverse osmosis membrane probe detection device between multiple membrane housings 100 and improving the efficiency of multi-point detection.

[0044] In some optional embodiments, the permeate membrane probe detection device further includes a sampling ball valve 8, which is installed at the input end of the detection element and connected to the probe sampling assembly 1. By opening or closing the sampling ball valve 8 in stages, the flow of the sampling path can be effectively controlled. After sampling stabilizes, the sampling ball valve 8 is opened to send the water sample into the detection element, avoiding contamination with the water sample from the transition section. This ensures more accurate and representative detection data, enabling independent sampling of multiple membrane elements 102 one by one, facilitating segmented detection and comparative analysis. Furthermore, when the sampling ball valve 8 is not open, it prevents water sample from flowing out or accidentally entering the detection element, ensuring the safety and cleanliness of the detection process. Operators can flexibly adjust the flow of water sample according to the detection rhythm, eliminating the need for frequent probe insertion and removal, significantly improving operational efficiency and convenience.

[0045] like Figure 2 As shown, the steps for detection using a reverse osmosis membrane probe detection device are as follows:

[0046] S1: The operator cuts off the water supply to the reverse osmosis membrane system and opens the end cap of the membrane housing 100 to be tested;

[0047] S2: Place the uninflated connecting airbag 2 at the end cap interface 103, inflate the connecting airbag 2 with the inflator 3 to expand the connecting airbag 2 to the preset expansion degree, then close the check valve 5 and check whether the connecting airbag 2 is well sealed and the connection is stable.

[0048] S3: Insert the probe body of the probe sampling assembly 1 into the central tube 101 of the membrane housing 100 through the sampling hole 4, and simultaneously push the sampling tube to observe the scale line on the sampling tube to determine the insertion position of the probe body in the central tube 101; when the probe body reaches the position of the first membrane element 102, turn on the water supply of the first membrane element 102, the purified water of the first membrane element 102 is stored in its central tube 101 and water pressure is generated, the purified water is introduced into the probe body through the water pressure, and then flows through the sampling tube to the detection device connected to the end of the sampling tube to complete the water quality detection of the first membrane element 102;

[0049] S4: The operator continues to pull the sampling tube to move the probe body to the position of the second membrane element 102, closes the sampling ball valve 8, collects the purified water of the second membrane element 102 for a certain period of time, and after ensuring that the purified water of the first membrane element 102 has been completely discharged, opens the sampling ball valve 8 to transport the water sample of the second membrane element 102 to the test piece for testing.

[0050] S5: Repeat step S4 to complete the sampling and testing of the subsequent membrane element 102 in sequence;

[0051] S6: After completing all sampling of the reverse osmosis membrane system, open the vent valve 6 to release the gas in the connecting air bag 2, retract the probe sampling component 1, tighten the end cap of the reset membrane housing 100, and transfer the connecting air bag 2 to the end cap interface 103 of the next reverse osmosis membrane system to be tested, in preparation for the next round of testing.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A reverse osmosis membrane probe detection device, characterized in that, include: The probe sampling assembly (1) is used to extend into the central tube (101) of the membrane housing (100) and sample the membrane elements (102) connected in series one by one; A connecting airbag (2) is disposed at the end cap interface (103) of the membrane shell (100). The connecting airbag (2) is made of flexible and stretchable material and has an annular structure. Its outer diameter can be inserted into the end cap interface (103) when it is not inflated. After being inflated, it forms an interference fit with the inner wall of the end cap interface (103). The connecting airbag (2) has a sampling hole (4) inside for the probe sampling component (1) to pass through, and a sealed sliding fit is formed between the probe sampling component (1) and the inner wall of the sampling hole (4). An inflatable component (3) is provided. The connecting airbag (2) is provided with an inflation port. The inflatable component (3) is located outside the end cap interface (103), and the output end of the inflatable component (3) is detachably connected to the inflation port for inflating the connecting airbag (2). The detection element is disposed outside the end cap interface (103), and the input end of the detection element is connected to the output end of the probe sampling assembly (1) for detecting water samples.

2. The reverse osmosis membrane probe detection device according to claim 1, characterized in that, The permeation membrane probe detection device also includes a check valve (5), which is installed between the inflation component (3) and the connecting airbag (2).

3. The reverse osmosis membrane probe detection device according to claim 2, characterized in that, The permeation membrane probe detection device also includes a vent valve (6), which is installed between the check valve (5) and the connecting airbag (2).

4. The reverse osmosis membrane probe detection device according to claim 1, characterized in that, The probe sampling assembly (1) includes a probe body and a sampling tube. The probe body is connected to the input end of the sampling tube, the output end of the sampling tube is connected to the detection element, and the sampling tube is in a sealed sliding fit with the sampling hole (4).

5. The reverse osmosis membrane probe detection device according to claim 4, characterized in that, A sealing ring (7) is provided on the inner wall of the sampling hole (4), and the sealing ring (7) is in a sealing sliding fit with the sampling tube.

6. The reverse osmosis membrane probe detection device according to claim 5, characterized in that, The sampling tube is equipped with graduation lines.

7. The reverse osmosis membrane probe detection device according to claim 1, characterized in that, The permeation membrane probe detection device also includes a sampling ball valve (8), which is installed at the input end of the detection element and connected to the probe sampling assembly (1).

8. The reverse osmosis membrane probe detection device according to any one of claims 1-7, characterized in that, The inflation component (3) is an air pump.

9. The reverse osmosis membrane probe detection device according to any one of claims 1-7, characterized in that, The connecting airbag (2) is a soft rubber airbag.

10. The reverse osmosis membrane probe detection device according to any one of claims 1-7, characterized in that, The testing device is a conductivity meter.

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