A leak detection device for an internal pressure type ultrafiltration membrane element

Abstract

This utility model relates to the field of ultrafiltration membrane element leak detection technology, and more particularly to an internal pressure ultrafiltration membrane element leak detection device. It includes an inflation component and a detection component. The inflation component includes a connector, a gas pipe, and a pipe switch. The connector is used to connect to the drain port of the internal pressure ultrafiltration membrane element. One end of the gas pipe is connected to the connector, and the other end is connected to a gas generator. The detection component includes a transparent water tank, which is detachably connected to the connector and can cover the open end of the internal pressure ultrafiltration membrane element. When detecting the internal pressure ultrafiltration membrane element, the transparent water tank must first be detached from the connector and filled with water to cover the open end; the connector is then connected to the drain port. Then, the gas pipe connected to the gas generator can input gas into the drain port through the connector. By observing the bubbling of the membrane fibers at the open end through the transparent water tank, the location of the broken membrane fiber can be determined simply and efficiently.

Description

Technical Field

[0001] This utility model relates to the field of ultrafiltration membrane element leak detection technology, and more specifically, to an internal pressure type ultrafiltration membrane element leak detection device. Background Technology

[0002] Internal pressure ultrafiltration membrane elements are widely used in the water treatment industry, with applications in tap water pretreatment, industrial wastewater treatment, and household water purification. Internal pressure ultrafiltration membrane elements filter water through multiple internal membrane fibers. During filtration, these fibers may break due to impact or vibration from impurities in the water. This breakage directly leads to increased turbidity in the effluent, reducing the filtration efficiency.

[0003] In the existing technology, there is a lack of methods to detect specific membrane fibers. Usually, it can only detect that a certain membrane element has leaked and the entire membrane element needs to be replaced. The replacement cost is high, resulting in a large production cost. Utility Model Content

[0004] To overcome the technical problem of accurately detecting broken membrane fibers from ultrafiltration membrane elements in existing technologies, this utility model provides an internal pressure ultrafiltration membrane element leak detection device, which includes:

[0005] An inflation assembly, comprising a connector and a gas pipe, wherein the connector is used to connect to the drain port of the internal pressure ultrafiltration membrane element, and one end of the gas pipe is connected to the connector and the other end is connected to a gas generating device;

[0006] The detection component includes a transparent water tank, which is detachably connected to the connector and can cover the open end of the internal pressure ultrafiltration membrane element.

[0007] Furthermore, the connector is provided with a snap-fit ​​part, which includes a flexible binding member, and the inflation assembly can be connected to the outer peripheral wall of the internal pressure ultrafiltration membrane element through the snap-fit ​​part.

[0008] Furthermore, a quick connector is provided at the end of the gas pipeline away from the connector.

[0009] Furthermore, the gas pipeline is also equipped with a pipeline switch, which can control the opening and closing of the gas pipeline.

[0010] Furthermore, the outer peripheral wall of the connector is provided with a first sealing structure, and the connector can be sealed to the drain outlet through the first sealing structure.

[0011] Furthermore, the inner peripheral wall of the transparent water tank is provided with a second sealing structure, and the transparent water tank can be sealed to the open end through the second sealing structure.

[0012] Furthermore, an annular filler is provided between the transparent water tank and the connector.

[0013] Furthermore, the transparent water tank has a convex transparent surface on the side away from the opening end.

[0014] Furthermore, the outer peripheral wall of the transparent water tank is provided with anti-slip grooves.

[0015] Furthermore, a water inlet is provided on the top of the transparent water tank.

[0016] Beneficial effects:

[0017] This application provides a leak detection device for an internal pressure ultrafiltration membrane element, comprising an inflation assembly and a detection assembly. The inflation assembly includes a connector, a gas pipe, and a pipe switch. The connector is used to connect to the drain port of the internal pressure ultrafiltration membrane element. One end of the gas pipe is connected to the connector, and the other end is connected to a gas generator. The detection assembly includes a transparent water tank, which is detachably connected to the connector and can cover the open end of the internal pressure ultrafiltration membrane element. When detecting the internal pressure ultrafiltration membrane element, the transparent water tank must first be detached from the connector and filled with water to cover the open end; the connector is then connected to the drain port. Subsequently, the gas pipe connected to the gas generator can input gas into the drain port through the connector. By observing the bubbling of the membrane fibers at the open end through the transparent water tank, the location of the broken membrane fiber can be determined simply and efficiently. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional structural diagram of the internal pressure ultrafiltration membrane element leak detection device provided by this utility model during operation.

[0020] In the diagram: 1. Connector; 2. Gas pipe; 3. Transparent water tank; 4. Clip; 5. Quick connector; 6. Pipe switch; 7. First sealing structure; 8. Second sealing structure; 9. Water inlet; 10. Sealing element; 11. Third sealing structure. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] like Figure 1 As shown, this embodiment provides a leak detection device for an internal pressure ultrafiltration membrane element, which includes an inflation assembly and a detection assembly. The inflation assembly includes a connector 1, a gas pipe 2, and a pipe switch 6. The connector 1 is used to connect to the drain port of the internal pressure ultrafiltration membrane element. One end of the gas pipe 2 is connected to the connector 1, and the other end is connected to a gas generator. The detection assembly includes a transparent water tank 3, which is detachably connected to the connector 1 and can cover the open end of the internal pressure ultrafiltration membrane element. When detecting the internal pressure ultrafiltration membrane element, the transparent water tank 3 must first be detached from the connector 1 and filled with water to cover the open end; the connector 1 is then connected to the drain port. The gas pipe 2, connected to the gas generator, can then input gas into the drain port through the connector 1. When the membrane fiber breaks, the internal structure changes, and the inflation of gas can cause bubbles to form at the end of the broken membrane fiber. Therefore, by observing the bubbling at the open end of the membrane fiber through the transparent water tank 3, the location of the broken membrane fiber can be determined simply and efficiently.

[0023] Specifically, the connector 1 is provided with a snap-fit ​​part 4, which includes a flexible binding member. The inflation assembly can be connected to the outer peripheral wall of the internal pressure ultrafiltration membrane element through the snap-fit ​​part 4. It is understood that the internal pressure ultrafiltration membrane element is typically a cylindrical structure, with its drain outlet located on the outer peripheral wall of the cylindrical structure. The flexible binding member can be wrapped around and fitted to the outer peripheral wall to achieve relative fixation between the connector 1 and the internal pressure ultrafiltration membrane element, preventing the connector 1 from detaching from the drain outlet under external force. Preferably, the flexible binding member can be an elastic strap, thereby enabling the connector 1 to be connected to internal pressure ultrafiltration membrane elements with different outer diameters.

[0024] Furthermore, a quick connector 5 is provided at the end of the gas pipeline 2 furthest from the connector 1. The aforementioned internal pressure ultrafiltration membrane element leak detection device can be connected to or disconnected from the gas source pipe of the gas generator via the quick connector 5, quickly changing the on / off state between the internal pressure ultrafiltration membrane element and the gas generator, thus improving work efficiency during inspection. It is understood that the gas generator can produce compressed gas, and the pressure of the compressed gas can be set according to the specific parameters of the internal pressure ultrafiltration membrane element; this embodiment does not limit this setting.

[0025] Furthermore, the gas pipeline 2 is also equipped with a pipeline switch 6, which controls the opening and closing of the gas pipeline 2. The pipeline switch 6 can be opened only after the gas flow generated by the gas production device has stabilized, thereby providing a stable supply of compressed gas to the internal pressure ultrafiltration membrane element. Preferably, the gas pipeline 2 is a flexible pipeline, reducing space occupation and facilitating the overall storage of the internal pressure ultrafiltration membrane element leak detection device. The pipeline switch 6 is a clamp valve installed on the pipeline. In some other embodiments, the pipeline switch 6 can be a lever squeeze valve, a ring squeeze switch, or other switching structures suitable for flexible pipelines; this embodiment does not limit this.

[0026] Furthermore, the outer peripheral wall of the connector 1 is provided with a first sealing structure 7, through which the connector 1 can be sealed to the drain outlet. When gas is filled into the drain outlet, if the connector 1 and the drain outlet are not sealed, it is easy to make it difficult to detect bubbling at the open end, resulting in poor detection effect. Preferably, the first sealing structure 7 is a sealing ring fixed to the connector 1. In some other embodiments, the first sealing structure 7 can also be a removable elastic sealing structure fitted outside the connector 1. By replacing the elastic sealing structure with different outer edge dimensions, the connector 1 can be sealed to drain outlets with different inner diameters.

[0027] Furthermore, the inner circumferential wall of the transparent water tank 3 is provided with a second sealing structure 8, allowing the transparent water tank 3 to be sealed to the open end through the second sealing structure 8. It is understood that the membrane fibers of the internal pressure ultrafiltration membrane element are arranged in a ring shape; therefore, the cross-section of the transparent water tank 3 is also ring-shaped. The second sealing structure 8 is respectively disposed on the inner and outer rings of the ring structure. The sealed connection between the transparent water tank 3 and the open end prevents water from overflowing from the water tank and avoids air bubbles at the connection point from affecting the observer's detection results of the membrane fibers. It is understood that the two opposite ends of the internal pressure ultrafiltration membrane module are the inlet and the outlet, respectively, both of which can expose the membrane fibers. Preferably, a sealing element 10 is provided in the ring structure of the transparent water tank 3, and a third sealing structure 11 is provided outside the sealing element 10. The sealing element 10 can be disposed at the opposite end of the open end, ensuring that the gas flow direction is towards the open end when gas is introduced, thereby ensuring the detection effect.

[0028] Furthermore, an annular filler is provided between the transparent water tank 3 and the connector 1. The outer diameter of the connector 1 is relatively small, therefore the annular filler is needed to fill the space between the connector 1 and the transparent water tank 3 to ensure stability when they are connected. It is understood that the snap-fit ​​structure at the connector 1 not only serves to fix the connector 1 to the internal pressure ultrafiltration membrane element, but also to achieve relative fixation between the connector 1 and the transparent water tank 3 during storage.

[0029] Specifically, the transparent water tank 3 has a convex transparent surface on the side away from the opening. When the operator observes the membrane fibers, they need to observe through the side of the transparent water tank 3 away from the opening. Therefore, making this surface convex can appropriately magnify the image at the membrane fibers, making it easier for the operator to observe.

[0030] Furthermore, the outer peripheral wall of the transparent water tank 3 is provided with anti-slip grooves. When the transparent water tank 3 is fixed using the buckle structure, the flexible binding will be bound to the outer peripheral wall of the transparent water tank 3. Therefore, the anti-slip grooves can effectively prevent slippage during binding and prevent the transparent water tank 3 from falling off.

[0031] Furthermore, a water inlet 9 is provided on the top of the transparent water tank 3. When using the transparent water tank 3, after installing the transparent water tank 3 to the open end, clean water is injected into the water inlet 9 until the clean water overflows all the membrane fibers. After that, the user can observe whether the membrane fibers are bubbling through the transparent water tank 3 and thus determine whether there is any membrane fiber breakage.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A leak detection device for an internal pressure type ultrafiltration membrane element, characterized in that, include: An inflation assembly, comprising a connector (1) and a gas pipe (2), wherein the connector (1) is used to connect to the drain port of the internal pressure ultrafiltration membrane element, and one end of the gas pipe (2) is connected to the connector (1) and the other end is connected to a gas generating device; The detection component includes a transparent water tank (3), which is detachably connected to the connector (1) and can cover the open end of the internal pressure ultrafiltration membrane element.

2. The leak detection device for an internal pressure type ultrafiltration membrane element according to claim 1, characterized by The connector (1) is provided with a buckle (4), the buckle (4) includes a flexible binding member, and the inflation component can be connected to the outer peripheral wall of the internal pressure ultrafiltration membrane element through the buckle (4).

3. The leak detection device for an internal pressure type ultrafiltration membrane element according to claim 2, characterized by A quick connector (5) is provided at the end of the gas pipe (2) away from the connector (1).

4. The leak detection device for an internal pressure type ultrafiltration membrane element according to claim 2, characterized by The gas pipeline (2) is also equipped with a pipeline switch (6), which is used to control the opening and closing of the gas pipeline (2).

5. The leak detection device for an internal pressure type ultrafiltration membrane element according to claim 2, characterized by The outer peripheral wall of the connector (1) is provided with a first sealing structure (7), and the connector (1) can be sealed to the drain outlet through the first sealing structure (7).

6. The leak detection device for an internal pressure type ultrafiltration membrane element according to claim 5, characterized by The inner peripheral wall of the transparent water tank (3) is provided with a second sealing structure (8), and the transparent water tank (3) can be sealed to the opening end through the second sealing structure (8).

7. The internal pressure ultrafiltration membrane element leak detection device according to claim 6, characterized in that, An annular filler is provided between the transparent water tank (3) and the connector (1).

8. The apparatus according to any one of claims 2 to 7, wherein The transparent water tank (3) has a convex transparent surface on the side away from the opening end.

9. The leak detection device for an internal pressure type ultrafiltration membrane element according to claim 8, characterized by The outer periphery of the transparent water tank (3) is provided with anti-slip grooves.

10. The leak detection apparatus for an internal pressure type ultrafiltration membrane element according to claim 8, characterized by The top of the transparent water tank (3) is provided with a water inlet (9).

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