Hollow membrane filament degassing assembly

Abstract

The utility model discloses a hollow membrane filament degassing component which comprises a shell, a membrane filament degassing component and a membrane filament degassing component, a hollow membrane tow; the connecting piece is used for communicating the hollow membrane tows with the pipeline and penetrates through the liquid inlet and / or the liquid outlet; the connecting piece comprises a body used for being connected with the end of the hollow membrane tow in a sealed mode; part of the head part is located in the liquid inlet and / or the liquid outlet, and the head part is detachably connected with a limiting piece abutting against the top wall of the shell; the clamping part is arranged in the containing cavity and located between the body and the head part, and the clamping part and the limiting part oppositely seal and clamp the top wall of the shell; the supporting section is positioned above the head part in the axial direction; the sealing section is located above the supporting section in the axial direction and used for being detachably connected with a pipeline; the body, the clamping part, the head part, the supporting section and the sealing section are sequentially and integrally connected in the axial direction, and the supporting section is provided with an anti-rotation part. According to the integrated connecting piece, a sealing leakage point is reduced, the connecting piece cannot rotate in the assembling process due to the arrangement of the anti-rotation part, and sealing connection cannot be affected.

Description

Technical Field

[0001] This utility model relates to the technical field of hollow membrane fiber modules for gas-liquid separation, and in particular to a hollow membrane fiber degassing module. Background Technology

[0002] In the production processes of fine patterning for display panels, integrated circuits, and discrete semiconductor devices, the photoresist used needs to be exposed to light of a specific wavelength for a specific time, allowing it to undergo photochemical reactions that cause different chemical structural changes in various substances. When photoresist is coated onto a circuit board, if residual air bubbles are present within the photoresist, it can lead to decreased coating accuracy, quality defects on the circuit board, or photoresist development defects. To prevent this, a hollow fiber degassing assembly for gas-liquid separation is installed before the process.

[0003] The prior art CN217068407U discloses the above-mentioned hollow membrane filament degassing device for photoresist gas-liquid separation. In this device, the connectors at both ends of the hollow membrane filament bundle are adapted to the external pipeline via adapters. One end of the adapter is connected to the connector via a tapered thread seal, and the other end is connected to the pipeline via a threaded seal. Therefore, there are two liquid seals and two threaded turns. The two liquid seals increase the leakage points of the photoresist seal. Furthermore, since the connector itself and the limiting nut are threadedly connected to the housing, the flange on the connector is sealed to the top wall of the housing via an O-ring. The threaded connection between the connector itself and the limiting nut will generate another threaded turn. The three threaded turns will cause the connector itself to become loose due to the threaded decoupling from the limiting nut, causing the connector to rotate and move downwards, thereby causing the seal between the connector and the top wall of the housing to fail. The specific reasons are analyzed as follows.

[0004] During the assembly of the housing, connectors, adapters, and external pipelines, the first step involves tightening the limiting nut and connector threads to clamp the O-ring and the top wall of the housing with their flanges facing each other, achieving the first gas seal. The second step involves tightening the adapter's tapered thread onto the connector to achieve the second liquid seal. Since the adapter may need to be disassembled and replaced during use, any misoperation or over-operation during the tightening process can cause the connector to rotate, leading to the limiting nut and connector threads becoming disengaged and loosening, thus causing the first gas seal to fail. Finally, when the external pipeline is connected to the other end of the adapter via a nut, the third liquid seal is achieved between the pipeline and the adapter. Similarly, the external pipeline may also need to be disassembled and replaced. Any misoperation or over-operation by the operator can also cause the connector to rotate, resulting in the seal between the tapered threads of the adapter and the connector failing.

[0005] In summary, since sealing is achieved by sequentially tightening multiple components such as external pipelines, adapters, and connectors, not only are there many sealing points leading to an increase in leakage points, but each tightening may also cause loosening of the previous tightening and the rotation of the connectors, which can also lead to seal failure and leakage. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this utility model provides a hollow membrane fiber degassing assembly, in which the body, snap-fit ​​part, head, support section and sealing section of the connector are axially and integrally connected in sequence. This not only reduces the number of sealing leakage points, but also provides an anti-rotation part in the support section. During the assembly process of the connector and the shell, and the connector and the pipeline, the connector will not rotate, and the sealing connection between the pipeline, the connector and the shell will not loosen or leak.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a hollow membrane fiber degassing component, comprising:

[0008] The housing has a receiving cavity, and is provided with a liquid inlet, a liquid outlet and an air extraction port;

[0009] Hollow membrane fiber bundles are disposed within the receiving cavity;

[0010] A connector, used to connect the hollow membrane fiber bundle and the tubing, is inserted through the liquid inlet and / or liquid outlet; the connector includes:

[0011] The body, located within the receiving cavity, is used to seal the ends of the hollow membrane fiber bundle;

[0012] The head is located axially above the body and partially inside the liquid inlet and / or liquid outlet. A limiting member located outside the receiving cavity is detachably connected to the head, and the limiting member abuts against the top wall of the housing.

[0013] A snap-fit ​​portion is provided within the receiving cavity and located between the body and the head, for sealing and clamping the top wall of the housing in an opposing direction with the limiting member;

[0014] A support section is located axially above the head;

[0015] A sealing section, located axially above the support section, is used for detachable connection of pipelines;

[0016] The body, snap-fit ​​part, head, support section and sealing section are axially connected in sequence, and the interior is hollow to form a through flow channel. The support section has an anti-rotation part that can cooperate with an external tool to prevent rotation and limit the rotation of the connector.

[0017] The connector in the degassing assembly provided by this utility model is integrally formed by connecting the body, the snap-fit ​​part, the head, the support section and the sealing section. After the connector is installed, only one detachable sealing connection is made between the sealing section and the external pipeline. There is no need to use an adapter as an intermediate carrier to connect the external pipeline and the connector, thus eliminating the need for the tapered thread liquid seal between the adapter and the connector in the prior art, reducing one sealing leakage point. Furthermore, the photoresist introduced during the degassing operation will not enter the gap between the tapered threads, thereby preventing the photoresist from solidifying in the tapered thread gap and causing adverse effects on the seal, and reducing the dead area area for photoresist cleaning. When installing the connector, it is only necessary to assemble the connector through the shell, which simplifies the installation steps and reduces the installation difficulty. Furthermore, the anti-rotation part of the support section and the anti-rotation part of the external tool prevent the connector from rotating. That is, when the sealing section and the pipeline are connected, the seal between the connector and the limiting part will not be affected. This effectively prevents the connector from rotating and shifting downward, which would cause the seal between the connector and the top wall of the shell to fail, and ensures the airtightness of the cavity. Due to the setting of the anti-rotation part of the support section, the connector will not rotate during the installation of the connector and the limiting part or during the connection of the sealing section and the pipeline. This avoids damage caused by misoperation or excessive operation that could cause the hollow membrane fiber bundle to twist due to the rotation of the connector.

[0018] Furthermore, the anti-rotation part is a polygonal outer contour of the support segment, so as to form multiple support surfaces on the outer peripheral wall of the support segment.

[0019] This design allows external tools to match the outer contour of the polygon and clamp onto any two opposing support surfaces on the outer perimeter of the support section, preventing the connector from rotating. This simplifies operation and provides more space for other operations.

[0020] Furthermore, the head has a first external thread that can be threadedly connected to the limiting member, and the sealing section has a second external thread, wherein the helical extension direction of the first external thread is the same as that of the second external thread.

[0021] With this setup, during assembly, the limiting member first rotates downwards and screws into the first external thread of the head until it is fixedly pressed against the top wall of the housing, achieving a sealed assembly connection between the housing and the connector. Then, when the sealing section is connected to the pipeline, the external nut rotates downwards and screws into the second external thread of the sealing section to connect the pipeline to the sealing section. Since the second and first external threads extend in the same direction, the limiting member remains stationary while the connector rotates, causing them to rotate relative to each other. The connector's rotation loosens and rotates downwards, causing the gas seal between the connector and the housing to fail. Therefore, with the anti-rotation part of the support section and the cooperation of the external tool, the connector cannot rotate at all. No matter how the external nut connected to the second external thread of the sealing section is screwed, the connector will not rotate, effectively ensuring the gas seal between the connector and the housing.

[0022] Furthermore, an O-ring is provided between the top wall of the housing and the snap-fit ​​portion, and the top wall of the housing and the snap-fit ​​portion seal and clamp the O-ring. The first external thread of the head extends to the junction of the head and the snap-fit ​​portion, and a portion of the first external thread extends into the inlet and / or outlet.

[0023] With this configuration, when the limiting member is threadedly connected to the first external thread of the head and moves towards the direction of the snap-fit ​​part for installation, the connecting member moves upward from below the top wall of the housing through the inlet and / or outlet, and the O-ring is gradually squeezed by the snap-fit ​​part. Because the O-ring needs a certain axial compression to seal, it ensures that the axial length of the thread connected to the limiting member is long enough. This avoids a situation where, due to manufacturing errors, the limiting member has not yet pressed against the top wall of the housing and there is a gap between them. In this case, the bottom of the outer wall of the connecting member's head lacks the first external thread, and the limiting member cannot move further downward to press against the top wall of the housing. The connecting member will fall down until the limiting member is only supported by gravity on the top wall of the housing. The snap-fit ​​part cannot effectively and fully compress the O-ring, and the O-ring cannot reach the predetermined compression amount, making it difficult to seal effectively. Therefore, the lower end of the first external thread extends into the inlet and / or outlet, and the limiting member is always threadedly connected to the first external thread to ensure that the connecting member and the housing effectively compress the O-ring for gas sealing.

[0024] Furthermore, the inlet and / or outlet are circular through holes, and the head is cylindrical and partially extends into the circular through hole.

[0025] This design facilitates the assembly of the head with the inlet and outlet, reduces installation difficulty, and makes it easier to manufacture the inlet, outlet, and connectors.

[0026] Furthermore, the main body, snap-fit ​​part, head, support section, and sealing section are integrally molded from plastic into the connector. This process is relatively simple, reduces processing costs, and offers greater controllability in processing precision.

[0027] Furthermore, the outer diameters of the snap-fit ​​portion, the head, the support section, and the sealing section gradually decrease in sequence.

[0028] This design allows the head, support section, and sealing section to pass through the inlet or outlet from bottom to top, and ensures that the snap-fit ​​part is secured inside the housing. The outer diameter of the head is smaller than the outer diameter of the snap-fit ​​part, allowing the limiting member threaded onto the first external thread of the head to cooperate with the snap-fit ​​part to seal and clamp the top wall of the housing. The outer diameter of the support section is smaller than the outer diameter of the head, preventing unnecessary interference to the assembly connection between the limiting member and the head when external tools restrict the rotation of the connector through the support section, thus facilitating assembly. The outer diameter of the sealing section is smaller than the outer diameter of the support section, providing sufficient radial space for pipeline installation and preventing the overall volume from becoming too large after pipeline installation.

[0029] Furthermore, the radial width of the head is smaller than the radial width of the support section, and the inner wall of the head is located radially outside the inner wall of the support section; the flow channel includes a first flow channel formed hollow inside the support section and a constricted flow channel and a second flow channel formed hollow inside the head, the inner diameter of the first flow channel is smaller than the inner diameter of the second flow channel, and the constricted flow channel has a frustoconical cross-section to transitionally connect the first flow channel and the second flow channel.

[0030] With this configuration, the radial width of the head is smaller than the radial width of the support section. This not only provides space for the difference in inner diameter between the first and second flow channels, but also ensures that the support section has sufficient thickness to prevent deformation when clamped by external tools, and ensures a stable and sealed connection between the connector, the limiting member, and the housing. The inner wall of the head is located radially outside the inner wall of the support section to facilitate the formation of the constricted flow channel and the second flow channel. The constricted flow channel is set between the second and first flow channels to achieve a gradual reduction in inner diameter from the second flow channel to the first flow channel. This creates a change in the inner diameter of the flow channels between the flow channels corresponding to the head and the flow channels corresponding to the support section, thereby forming a good fluid buffering effect through mutual cooperation.

[0031] Furthermore, the interior of the body is hollow to form a third flow channel, and the inner diameter of the third flow channel is larger than the inner diameter of the second flow channel.

[0032] With this configuration, the inner diameters of the third flow channel, second flow channel, constricted flow channel, and first flow channel gradually decrease, creating a buffer effect for the fluid. This prevents the fluid velocity and flow rate at the outlet from being too fast or too large, which could impact the sealing connection between the pipeline and the sealing section and affect the sealing connection. It also prevents the fluid at the inlet from failing to meet the flow rate requirement of covering the entire end face of the hollow membrane bundle. This ensures that the fluid in the third flow channel can be fully distributed to the entire end face of the hollow membrane bundle, guaranteeing the effective utilization of the entire cross-section of the hollow membrane bundle.

[0033] Furthermore, the sealing section includes a base section and a threaded section extending axially from the base section, the base section having a sealing slot located radially inside the threaded section, the sealing slot being used to seal a sleeve fitted with a conduit.

[0034] This configuration, with a sealing slot in the base section, provides space for inserting the sleeve and a sealing fixing point for the sealing connection of the pipeline, facilitating the sealing assembly of the pipeline.

[0035] The beneficial effects of this utility model are as follows: the connector is formed by integrally connecting the body, the snap-fit ​​part, the head, the support section and the sealing section. After the connector is installed, only one detachable sealing connection is made between the sealing section and the external pipeline. There is no need to use an adapter as an intermediate carrier to connect the external pipeline and the connector, thus eliminating the need for the tapered thread liquid seal between the adapter and the connector in the prior art, reducing one sealing leakage point. Furthermore, the photoresist introduced during the degassing operation will not enter the gap between the tapered threads, thus preventing the photoresist from solidifying in the tapered thread gap and causing adverse effects on the seal, and reducing the area with dead corners for photoresist cleaning. When installing the connector, it is only necessary to assemble the connector through the shell, which simplifies the installation steps and reduces the installation difficulty. Furthermore, the anti-rotation part of the support section and the anti-rotation part of the external tool prevent the connector from rotating. That is, when the sealing section and the pipeline are connected, the seal between the connector and the limiting part will not be affected. This effectively prevents the connector from rotating and shifting downward, which would cause the seal between the connector and the top wall of the shell to fail, and ensures the airtightness of the cavity. Due to the setting of the anti-rotation part of the support section, the connector will not rotate during the installation of the connector and the limiting part or during the connection of the sealing section and the pipeline. This avoids damage caused by misoperation or excessive operation that could cause the hollow membrane fiber bundle to twist due to the rotation of the connector. Attached Figure Description

[0036] Figure 1 This is a cross-sectional view of the hollow membrane fiber degassing assembly according to an embodiment of the present invention.

[0037] Figure 2 This is a top view of the hollow membrane fiber degassing assembly according to an embodiment of the present invention.

[0038] Figure 3 for Figure 1 Enlarged view of the structure at point A in the image.

[0039] Figure 4 This is a cross-sectional view of the connector in the hollow membrane degassing assembly according to an embodiment of the present invention.

[0040] Figure 5 This is a cross-sectional view of another type of connector in the hollow membrane fiber degassing assembly according to an embodiment of the present invention.

[0041] Figure 6 This is a cross-sectional view showing the connection between the sealing section of the connector and the pipeline in the hollow membrane degassing assembly according to an embodiment of this utility model. Figure 1 .

[0042] Figure 7 This is a cross-sectional view showing the connection between the sealing section of the connector and the pipeline in the hollow membrane degassing assembly according to an embodiment of this utility model. Figure 2 .

[0043] Among them, 1-shell, 11-receiving cavity, 12-liquid inlet, 13-liquid outlet, 14-air extraction port, 15-cylinder, 16-cover, 2-hollow membrane fiber bundle, 3-connector, 31-body, 32-head, 321-first external thread, 33-clamping part, 34-support section, 341-anti-rotation part, 35-sealing section, 351-second external thread, 352-base section, 353-threaded section, 354-sealing slot, 4-limiting part, 5-flow channel, 51-first flow channel, 52-second flow channel, 53-narrowed flow channel, 54-third flow channel, 61-pipeline, 62-sleeve, 63-nut, 7-O-ring. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0045] like Figure 1 , Figure 2 As shown, a hollow membrane fiber degassing assembly is used to remove gas entrained in a feed solution, specifically photoresist. The degassing assembly includes a housing 1 with a receiving cavity 11, a hollow membrane fiber bundle 2 located within the receiving cavity 11 of the housing 1, and connectors 3 disposed at both ends of the hollow membrane fiber bundle 2. In this embodiment, the housing 1 includes a cylindrical body 15 and a cover 16 that seals and covers the top of the cylindrical body 15. The cover 16 of the housing 1 has an inlet 12, an outlet 13, and an exhaust port 14. The inlet 12, outlet 13, and exhaust port 14 are all circular through holes for the cylindrical connectors 2 to pass through and be installed. The two connectors 3 are respectively sealed and passed through the inlet 12 and outlet 13, thereby connecting the hollow membrane fiber bundle 2 and the external pipeline 61.

[0046] The ends of the hollow membrane bundle 2 are welded to the connector 3 through a perforated plate. One end of the hollow membrane bundle 2 is sealed and connected below the liquid inlet 12, and the other end is sealed and connected below the liquid outlet 13 through the connector 3, thus forming a U-shaped hollow membrane bundle 2 as shown in the figure. Of course, in other embodiments, the hollow membrane bundle 2 can also be spirally wound in the inner cavity of the shell 1 to provide a longer path of membrane filaments. The hollow membrane bundle 2 is manufactured and formed by bundling multiple hollow fiber membrane filaments, which is the prior art and will not be described in detail here.

[0047] by Figure 3Taking the direction shown as an example, the connector 3, from bottom to top, includes a body 31, a snap-fit ​​part 33, a head 32, a support section 34, and a sealing section 35. When the connector 3 is assembled and connected with the housing 1 and the hollow membrane bundle 2, the body 31 and the snap-fit ​​part 33 are located inside the receiving cavity 11, part of the head 32 is located inside the liquid inlet 12 or the liquid outlet 13, and the remaining part of the head 32 is located outside the housing 1. The support section 34 and the sealing section 35 are both located outside the housing 1. Specifically, the body 31 is section BC in the figure, the snap-fit ​​part 33 is section CD in the figure, the head 32 is section DE in the figure, the support section 34 is section EF in the figure, and the sealing section 35 is section FG in the figure.

[0048] The body 31 is used to seal the end of the hollow membrane bundle 2. The head 32 is located axially above the body 31, and a limiting member 4 located outside the receiving cavity 11 is detachably connected to the head 32. The limiting member 4 abuts against the top wall of the housing 1. The snap-fit ​​part 33 is located between the body 31 and the head 32, and is used to seal and clamp the top wall of the housing 1 facing the limiting member 4. The support section 34 is located axially above the head 32, and its outer wall has an anti-rotation part 341 that can cooperate with an external tool to prevent rotation. The anti-rotation part 341 cooperates with an external tool to prevent rotation and can limit the rotation of the connector 3 itself. The sealing section 35 is located axially above the support section 34 and is used for detachably connecting the pipeline 61.

[0049] The aforementioned body 31, snap-fit ​​part 33, head 32, support section 34, and sealing section 35 are axially and integrally connected to form a connector 3, and the connector 3 has a hollow interior forming a through flow channel 5. The axial direction mentioned in this article refers to the up and down direction in the attached drawings to define the extension direction of the flow channel 5. Therefore, the flow channel 5 can be vertical or slightly inclined. The flow channel 5 is used to connect the hollow membrane fiber bundle 2 and the pipeline 61. When the photoresist enters the flow channel 5 of the connector 3 in the liquid inlet 12 from the pipeline 61, the liquid flows from inside the multiple tubular membrane fibers of the hollow membrane fiber bundle 2. Then, a vacuum negative pressure source is connected from the air extraction port 14 to evacuate the inner cavity of the housing 1, so that the gas trapped in the liquid of the tubular membrane fibers passes through the tube wall of the tubular membrane fibers and is extracted. The degassed photoresist liquid comes out from the flow channel 5 of the connector 3 in the liquid outlet 13. The above degassed principle is also existing technology and will not be described in detail.

[0050] Specifically, in this embodiment, the body 31, the snap-fit ​​part 33, the head 32, the support section 34, and the sealing section 35 are integrally injection molded from plastic to form a connector 3, with a hollow interior forming a through-flow channel 5. This process is relatively simple, reduces processing costs, and offers higher controllability of processing precision. Of course, in other embodiments, the body 31, the snap-fit ​​part 33, the head 32, the support section 34, and the sealing section 35 are welded together to form a single piece.

[0051] The connector 3 in this invention is integrally composed of a body 31, a snap-fit ​​part 33, a head 32, a support section 34, and a sealing section 35. This means that there is no need to connect external pipelines and the connector via an adapter, eliminating the liquid seal between the adapter and the connector in existing technologies. It also reduces the need for sealing the tapered threads at the bottom of the adapter and the connector, thus reducing a potential leakage point. Photoresist will not enter the gaps between the tapered threads, preventing it from solidifying and negatively impacting the seal. Simultaneously, the anti-rotation part 341 of the support section 34, in conjunction with external tools, prevents the connector 3 from rotating during assembly. This means that when the sealing section 35 is connected to the pipeline 61, the sealing connection between the connector 3 and the limiting part 4 remains unaffected, effectively preventing the connector 3 from rotating downwards and causing seal failure between the connector 3 and the top wall of the housing 1, ensuring the airtightness of the receiving cavity 11. Furthermore, because the anti-rotation part 341 of the support section 34 cooperates with the external tool to prevent rotation, the connector 3 will not rotate during the screwing process with the limiting part 4 or during the screwing connection process between the sealing section 35 and the pipeline 61, thus avoiding damage to the hollow membrane fiber bundle 2 due to twisting. Moreover, the body 31, the snap-fit ​​part 33, the head 32, the support section 34 and the sealing section 35 are integrated, and only the connector 3 needs to be assembled with the housing 1, simplifying the installation steps and reducing the installation difficulty.

[0052] like Figure 2 As shown, the anti-rotation part 341 is a polygonal outer contour of the support section 34, thereby forming multiple support surfaces on the outer peripheral wall of the support section 34. In this embodiment, it is hexagonal, that is, six support surfaces are formed on the outer peripheral wall of the support section 34. This arrangement allows external tools to be clamped on any two opposite support surfaces on the outer peripheral wall of the support section 34, with selectable clamping angles, thus providing more space for the screwing operation between the limiting member 4 and the connecting member 3. Of course, in other embodiments, the anti-rotation part 341 can also be a protruding key or groove structure provided on the outer wall of the support section 34, as long as it can cooperate with the external tool groove key to achieve anti-rotation, and there is no specific limitation.

[0053] The head 32 has a first external thread 321 that can be threadedly connected to the limiting member 4, and the sealing section 35 has a second external thread 351. The helical extension direction of the second external thread 351 is the same as that of the first external thread 321. With this configuration, during assembly, the limiting member 4 is rotated downwards and screwed into the first external thread 321 of the head 32 until the limiting member 4 is fixedly pressed against the top wall of the housing 1, thus achieving a sealed assembly connection between the housing 1 and the connecting member 3. At this time, when the sealing section 35 is connected to the pipeline 61, the external nut 63 is rotated downwards and screwed into the second external thread 351 of the sealing section 35 to connect the pipeline 61 to the sealing section 35. Since the helical extension directions of the second external thread 351 and the first external thread 321 are the same, even if the connecting member 3 and the limiting member 4 continue to move relative to each other, they will not decouple due to the anti-rotation action of the anti-rotation part 341 and the external tool.

[0054] like Figure 3 As shown, an O-ring 7 is provided between the cover 16 of the housing 1 and the snap-fit ​​portion 33. Specifically, a groove for accommodating the O-ring 7 is formed on the top surface of the snap-fit ​​portion 33. When the limiting member 4 is threadedly connected to the first external thread 321, the limiting member 4 abuts against the top wall of the housing 1, thereby sealing and clamping the O-ring 7 against the snap-fit ​​portion 33. Figure 5 As shown, the first external thread 321 of the head 32 extends to the junction of the head 32 and the snap-fit ​​portion 33, and as... Figure 3 As shown, a portion of the first external thread 321 extends into the inlet 12 and / or outlet 13. This ensures that when the limiting member 4 is threadedly connected to the first external thread 321 of the head 32 and moves towards the locking part 33 for installation, the connecting member 3 moves upward through the inlet 12 and / or outlet 13 from below the top wall of the housing 1. As the O-ring 7 is gradually compressed by the locking part 33, the axial length of the thread connecting the limiting member 4 is sufficiently long to ensure a seal, preventing the limiting member 4 from not fully pressing against the top wall of the housing 1 due to manufacturing errors. Furthermore, when there is a gap between the two, and the bottom of the outer wall of the head 32 lacks the first external thread 321, the limiting member 4 cannot move further downward to press the top wall of the housing 1. The connecting member 3 will fall down and be supported by gravity on the top wall of the housing 1. The snap-fit ​​part 33 cannot effectively and fully compress the O-ring 7. The O-ring 7 cannot reach the predetermined compression amount and is difficult to seal effectively. Therefore, the lower end of the first external thread 321 extends into the liquid inlet 12 and / or the liquid outlet 13. The limiting member 4 is always threadedly connected to the first external thread 321 to ensure that the connecting member 3 and the housing 1 effectively compress the O-ring 7 to form an airtight seal.

[0055] Both the inlet 12 and the outlet 13 are circular through holes for installation. Correspondingly, the head 32 is cylindrical and partially extends into the circular through hole of the inlet 12 or the outlet 13. The assembly between the head 32 and the inlet 12 or the outlet 13 is convenient and does not require special positioning, reducing the difficulty of installation.

[0056] like Figure 4 As shown, the outer diameters of the snap-fit ​​portion 33, head 32, support section 34, and sealing section 35 gradually decrease, facilitating the head 32, support section 34, and sealing section 35 to pass through the inlet 12 or outlet 13 from bottom to top, and ensuring that the snap-fit ​​portion 33 is engaged inside the cover 16 of the housing 1. The outer diameter of the head 32 is smaller than that of the snap-fit ​​portion 33, allowing the limiting member 4, threaded onto the first external thread 321 of the head 32, to cooperate with the snap-fit ​​portion 33 to seal and clamp the cover 16. The outer diameter of the support section 34 is smaller than that of the head 32, preventing unnecessary interference to the assembly connection between the limiting member 4 and the head 32 when external tools restrict the rotation of the connector 3 through the support section 34, thus facilitating assembly. The outer diameter of the sealing section 35 is smaller than that of the support section 34, providing sufficient radial space for the installation of the pipeline 61 and preventing the overall volume from becoming too large after installation.

[0057] The inner diameters of the snap-fit ​​section 33, head 32, support section 34, and sealing section 35 are not limited. Figure 4 In this configuration, the inner diameters of the snap-fit ​​portion 33, the head 32, the support section 34, and the sealing section 35 are the same, meaning that most of the inner wall of the flow channel 5 is flush with the surface. Of course, as... Figure 5 As shown, in another form of connector, the flow channel 5 includes a first flow channel 51 hollowly formed inside the support section 34, and a constricted flow channel 53 and a second flow channel 52 hollowly formed inside the head 32. The inner diameter of the first flow channel 51 is smaller than the inner diameter of the second flow channel 52. The constricted flow channel 53 has a frustoconical cross section, so that the constricted flow channel 53 can transitionally connect the first flow channel 51 and the second flow channel 52.

[0058] The body 31 has a hollow interior forming a third flow channel 54. The inner diameter of the third flow channel 54 is larger than that of the second flow channel 52. This not only creates a narrowing flow channel 53 between the second flow channel 52 and the first flow channel 51, achieving a gradual reduction in the inner diameter from the second flow channel 52 to the first flow channel 51, but also increases the difference in inner diameter between the third flow channel 54 and the second flow channel 52. The inner diameters of the third flow channel 54, the second flow channel 52, the narrowing flow channel 53, and the first flow channel 51 gradually decrease in sequence, forming a buffer effect for the fluid. This prevents the fluid velocity and flow rate at the outlet 13 from being too fast or too large, which could impact the sealing connection between the pipe 61 and the sealing section 35 and affect the sealing connection. It also prevents the fluid at the inlet 12 from failing to meet the flow rate requirement of covering the entire end face of the hollow membrane bundle 2. This ensures that the fluid in the third flow channel 54 can be fully distributed to the entire end face of the hollow membrane bundle 2, guaranteeing the effective utilization of the entire cross-section of the hollow membrane bundle 2.

[0059] like Figure 5 As shown, the radial width of the head 32 is smaller than the radial width of the support section 34, i.e., L2 < L1. This not only provides space for the difference in inner diameter between the first flow channel 51 and the second flow channel 52, but also ensures that the support section 34 has sufficient thickness to prevent deformation when clamped by external tools, thus ensuring a stable and sealed connection between the connector 3, the limiting member 4, and the housing 1. Simultaneously, the inner wall of the head 32 is located radially outside the inner wall of the support section 34, facilitating the formation of the aforementioned constricted flow channel 53 and the second flow channel 52. This creates a change in the inner diameter of the flow channels between the flow channel 5 corresponding to the head 32 and the flow channel 5 corresponding to the support section 34, thereby creating a good fluid buffering effect through mutual cooperation.

[0060] The sealing connection structure between sealing section 35 and pipeline 61 can take many forms, such as... Figure 5 , Figure 6 In the illustrated embodiment, the sealing section 35 includes a base section 352 and a threaded section 353 extending axially from the base section 352. The base section 352 has a sealing slot 354 located radially inside the threaded section 353. The sealing slot 354 is used to seal the sleeve 62, on which the pipe 61 is inserted. Here, the sealing slot 354 is not necessarily located entirely inside the threaded section 353 in the same horizontal direction; it can also be located radially inside the threaded section 353. There is no specific limitation. Specifically, the port of the pipe 61 is first enlarged and then connected to the hollow sleeve 62. That is, one end of the sleeve 62 extends into the port of the pipe 61, and its other end is sealed and inserted into the sealing slot 354. The nut 63 is screwed downward and screwed into the second external thread 351 of the sealing section 35 to connect the pipe 61 to the sealing section 35.

[0061] like Figure 7In another embodiment shown, the port of pipe 61 is directly connected to the sealing section 35 after the diameter is expanded. In this case, the sleeve 62 is not provided. Instead, the port of pipe 61 after the diameter is expanded is directly fitted onto the columnar part of the sealing section 35 without the second external thread 351. The nut 63 is screwed into the second external thread 351 of the sealing section 35. The nut 63 is used to squeeze the outer circumferential surface of the port of pipe 61 to achieve a seal. After the port of pipe 61 is compressed, the inner surface of the port fits and seals with the outer circumferential surface of the columnar part of the sealing section 35.

[0062] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A hollow fiber degassing assembly, comprising: The housing has a receiving cavity, and is provided with a liquid inlet, a liquid outlet and an air extraction port; Hollow membrane fiber bundles are disposed within the receiving cavity; A connector, used to connect the hollow membrane fiber bundle and the tubing, is inserted through the liquid inlet and / or liquid outlet; characterized in that the connector comprises: The body, located within the receiving cavity, is used to seal the ends of the hollow membrane fiber bundle; The head is located axially above the body and partially inside the inlet and / or outlet. A limiting member located outside the receiving cavity is detachably connected to the head, and the limiting member abuts against the top wall of the housing. A snap-fit ​​portion is provided within the receiving cavity and located between the body and the head, for sealing and clamping the top wall of the housing in an opposing direction with the limiting member; A support section is located axially above the head; A sealing section, located axially above the support section, is used for detachable connection of pipelines; The body, snap-fit ​​part, head, support section and sealing section are axially connected in sequence, and the interior is hollow to form a through flow channel. The support section has an anti-rotation part that can cooperate with an external tool to prevent rotation and limit the rotation of the connector.

2. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The anti-rotation part is the polygonal outer contour of the support segment, so as to form multiple support surfaces on the outer peripheral wall of the support segment.

3. The hollow membrane fiber degassing assembly according to claim 1 or 2, characterized in that: The head has a first external thread that can be threadedly connected to the limiting member, and the sealing section has a second external thread, wherein the helical extension direction of the first external thread is the same as that of the second external thread.

4. The hollow membrane fiber degassing assembly according to claim 3, characterized in that: An O-ring is provided between the top wall of the housing and the snap-fit ​​part. The top wall of the housing and the snap-fit ​​part seal and clamp the O-ring. The first external thread of the head extends to the junction of the head and the snap-fit ​​part, and a portion of the first external thread extends into the inlet and / or outlet.

5. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The inlet and / or outlet are circular through holes, and the head is cylindrical and partially extends into the circular through hole.

6. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The body, snap-fit ​​part, head, support section, and sealing section are integrally molded from plastic to form the connector.

7. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The outer diameters of the snap-fit ​​section, head, support section, and sealing section gradually decrease in sequence.

8. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The radial width of the head is smaller than the radial width of the support section, and the inner wall of the head is located radially outside the inner wall of the support section; the flow channel includes a first flow channel formed hollow inside the support section and a constricted flow channel and a second flow channel formed hollow inside the head, the inner diameter of the first flow channel is smaller than the inner diameter of the second flow channel, and the cross-section of the constricted flow channel is frustoconical to transitionally connect the first flow channel and the second flow channel.

9. The hollow membrane fiber degassing assembly according to claim 8, characterized in that: The body has a hollow interior forming a third flow channel, and the inner diameter of the third flow channel is larger than the inner diameter of the second flow channel.

10. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The sealing section includes a base section and a threaded section extending axially from the base section. The base section has a sealing slot located radially inside the threaded section, the sealing slot being used to seal a sleeve fitted with a conduit.

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