Hollow membrane filament degassing assembly

Abstract

The utility model provides a hollow membrane filament degassing assembly which comprises a shell, a hollow membrane filament bundle and a connecting piece, the shell is provided with a liquid inlet, a liquid outlet and an extraction opening, the connecting piece is arranged at the liquid inlet and / or the liquid outlet in a sealing and penetrating mode, and the connecting piece is provided with a flow channel which is through in the axial direction and used for communicating the hollow membrane filament bundle with a pipeline. The connecting piece is provided with a first connecting part and a second connecting part, the first connecting part is used for being detachably connected with the adapter in a sealed mode, the adapter is provided with a connecting section which extends into the flow channel and is connected with the first connecting part, and the second connecting part is at least partially located outside the shell and is connected with a limiting piece which is connected with the top wall of the shell in a pressing mode; the limiting piece is provided with a limiting section connected with the second connecting part, and when the adapter is connected with the connecting piece, the limiting section and the connecting section have an overlapping area in the axial direction. The adapter and the limiting piece are mutually matched inside and outside to oppositely clamp and support the wall thickness of the flow channel of the connecting piece, so that the wall thickness of the connecting piece cannot be deformed, and the sealing connection of the adapter, the connecting piece and the shell is ensured.

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] Existing technologies CN217068408U, CN217068407U, and CN218636686U all disclose the aforementioned hollow membrane filament degassing device / assembly for photoresist gas-liquid separation. In this device, the connectors at both ends of the hollow membrane filament bundle are connected to the external pipeline via an adapter. The inner wall of the connector is provided with an inner tapered threaded hole, which is sealed to the outer tapered thread on the adapter. Specifically, raw rubber tape is wrapped around the outer tapered thread of the adapter and then inserted into the connector to achieve a threaded seal connection with the inner tapered threaded hole. At this time, the adapter needs to be screwed on forcefully.

[0004] On the one hand, during the tightening and loosening of adapters and connectors, especially during repeated disassembly and assembly, the wall thickness of the corresponding portion of the tapered thread hole inside the connector can deform, leading to a failure of the seal between the adapter and connector. On the other hand, when photoresist is introduced into the flow channel of the connector, a certain pressure is applied. Prolonged pressure can cause deformation of the wall thickness of the corresponding portion of the tapered thread hole inside the connector. This deformation is an outward expansion deviating from the central axis of the connector, which in turn causes the tapered thread seal between the adapter and connector to fail, resulting in leakage of photoresist liquid between the adapter and connector.

[0005] Meanwhile, the connector is usually made of fluororesin material for welding and binding hollow membrane filaments. After long-term use, the connector itself will also shrink and deform towards its central axis. When the connector is fitted with a nut to fix it to the top wall of the shell, the nut must be pressed tightly against the top wall of the shell to ensure the seal between the connector and the shell. Once the connection between the nut and the deformed connector becomes loose, gas leakage will occur when the inner cavity of the shell is evacuated.

[0006] Therefore, when installing and using the connector, it is crucial to ensure both the liquid seal between the upper part of the connector and the adapter, and the gas seal between the lower part of the connector and the housing. Existing degassing devices / components cannot solve the problem of leakage caused by the easy failure of seals at both the upper and lower parts of the connector. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, this utility model provides a hollow membrane fiber degassing assembly, which effectively reduces or avoids the deformation of the connecting parts by utilizing the overlapping area of ​​the limiting part and the adapter, and ensures effective gas sealing between the connecting parts and the housing and effective liquid sealing between the connecting parts and the adapter.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a hollow membrane fiber degassing assembly, including a shell, a hollow membrane fiber bundle located inside the shell, and connectors provided at both ends of the hollow membrane fiber bundle. The shell is provided with a liquid inlet, a liquid outlet, and a gas extraction port. The connectors are sealed through the liquid inlet and / or the liquid outlet. The connectors have an axially penetrating flow channel for connecting the hollow membrane fiber bundle and the pipeline. The inner wall of the connector has a first connecting portion and the outer wall has a second connecting portion. The first connecting portion is used to detachably seal and connect to an adapter. The adapter has a connecting section extending into the flow channel and connecting to the first connecting portion. The second connecting portion is at least partially located outside the shell and connected to a limiting member that presses against the top wall of the shell. The limiting member has a limiting section that connects to the second connecting portion. When the adapter is connected to the connector, the limiting section and the connecting section have an overlapping area in the axial direction.

[0009] In the degassing assembly of this utility model, the connection of the connector satisfies the following: there is an axially overlapping area between the limiting section where the limiting member and the second connecting part are connected, and between the connecting section where the adapter and the first connecting part are connected. Thus, the limiting member not only serves to fix the connector, but also, during the screwing of the adapter and the connector, and / or during use, under the outward action of hydraulic pressure on the inner wall of the connector's flow channel, the limiting section of the limiting member can restrict the outward deformation of the wall thickness of the part where the first connecting part of the connector is located, effectively preventing the liquid tightness failure between the first connecting part and the adapter. At the same time, when the connector itself undergoes inward deformation of its wall thickness, the connecting section connected to the first connecting part after the adapter extends into the flow channel will also restrict the inward deformation of the connector's wall thickness, so that the limiting member connected to the second connecting part will not loosen. Thus, the limiting member can always press the top wall of the shell, effectively preventing the air tightness failure between the connector and the shell, and ensuring that the inner cavity of the shell can be effectively evacuated for degassing. In summary, compared to existing technologies, the design of the first connecting part being recessed, and the adapter and the limiting member cooperating with each other to clamp and support the flow channel wall thickness of the connecting part, ensures that the wall thickness of the connecting part will not undergo deformation inward and / or outward from the axis. This ensures a liquid seal between the adapter and the connecting part, while the limiting member ensures a gas seal between the connecting part and the housing. Ultimately, this achieves a combined effect of liquid sealing between the upper part of the connecting part and the adapter, and gas sealing between the lower part of the connecting part and the housing.

[0010] Furthermore, the second connecting part is externally threaded, the limiting section is threadedly connected to the second connecting part, the connecting member has a boss located inside the housing, the limiting member and the boss clamp the top wall of the housing to achieve a sealed assembly of the connecting member and the housing.

[0011] This design provides positioning guidance for the installation of the housing and connectors. Furthermore, the boss and the limiting member can create compression on the inner and outer surfaces of the housing's top wall. With the limiting member securing the connector and housing, the combination of the limiting member and the boss achieves a sealed assembly of the connector and housing. The structural design is reasonable, utilizing fewer parts to achieve a sealed assembly of the housing and connectors, simplifying the assembly process. Therefore, the airtightness of the connector and housing can only be ensured when the boss and the limiting member clamp the housing's top wall. The connecting section restricts the inward deformation of the wall thickness of the second connecting part on the connector, preventing the limiting member and the deformed second connecting part from loosening, the connector from falling down, and the boss and the limiting member from effectively clamping the housing's top wall, resulting in airtightness failure.

[0012] Furthermore, the housing includes a cylindrical body and a cover that is sealed and fitted onto the top of the cylindrical body, with an O-ring clamped and sealed between the boss portion and the cover.

[0013] This design ensures the sealing of the connection between the housing and the connector by placing the O-ring between the boss and the cover. The boss provides space for the O-ring, making assembly convenient and preventing the O-ring from shifting. This ensures a stable and effective seal. It is evident that the limiting section and the connecting section have an overlapping area in the axial direction, preventing deformation of the wall thickness of the second connecting part. This, in turn, prevents the connection between the limiting part and the connector from loosening, and prevents the O-ring from compressing and loosening, thus preventing seal failure.

[0014] Furthermore, the second connecting portion has a connecting thread that connects to the limiting section and an adjusting thread extending from the lower end of the connecting thread, the adjusting thread extending into the inlet and / or outlet.

[0015] With this configuration, when the limiting member is threadedly connected to the second connecting part and moves towards the direction of the boss for installation, the connecting member moves upward from below the top wall of the housing through the inlet and / or outlet. As the O-ring is gradually squeezed by the boss, the axial length of the thread connecting the limiting section is ensured to be long enough to prevent situations 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 such cases, the bottom of the outer wall of the connecting member lacks the external thread that serves as the second connecting part, preventing the limiting member from moving further downward to press against the top wall of the housing. The connecting member would fall down until the limiting member is only supported by gravity on the top wall of the housing, and the boss cannot effectively and fully compress the O-ring. The O-ring will not reach the predetermined compression amount and will be difficult to seal effectively. Therefore, an adjusting thread extends from the lower end of the connecting thread, and the limiting member is always threadedly connected to the connecting thread or to both the connecting thread and the adjusting thread to ensure that the connecting member and the housing effectively compress the O-ring to form an airtight seal.

[0016] Furthermore, the first connecting part has an internal thread, and the degassing assembly includes an adapter with a connecting section that is threadedly connected to the first connecting part.

[0017] With this configuration, the adapter becomes an integral part of the degassing assembly. In its initial state, the adapter is threadedly connected to the first connecting part, making the connection simple, effective, and securely sealed, which facilitates subsequent use and operation.

[0018] Furthermore, the first connecting part is a tapered thread, the tapered thread has a guide area and a sealing area extending upward from the end of the guide area, and the overlapping area extends to the sealing area.

[0019] With this configuration, the tapered thread includes a root tooth, which guides the thread of the connecting section. As a guide zone, the threaded connection between the connecting section and the first connecting part in this guide zone cannot form an effective seal, and there is a gap between the threads. The predetermined area above the root tooth is connected to the thread of the connecting section in a sealing manner, which serves as a sealing zone. This ensures that the connecting section and the first connecting part form an effective seal, extends the overlapping area to the sealing zone, and ensures that the outer periphery of the sealing zone has a limit section that does not deform the wall thickness of the corresponding connecting part. When liquid squeezes through the gap of the root tooth and acts on the sealing zone, it ensures an effective seal between the adapter and the connecting part.

[0020] Furthermore, the guide zone terminal position is located one-third of the way up from the end of the tapered thread facing the inner cavity of the housing.

[0021] With this configuration, if the axial length of the guide zone is too large, the axial length of the sealing zone will be reduced accordingly, making it impossible to guarantee an effective sealing connection between the connector and the adapter. If the axial length of the guide zone is too small, the guide zone will not be able to achieve a good guiding function, increasing the difficulty of assembling the adapter and the connector. Setting the end position of the guide zone at 1 / 3 above the end of the tapered thread facing the inner cavity of the housing can take into account both the guiding and sealing functions, facilitating the initial installation while ensuring an effective sealing connection in the later stage.

[0022] Furthermore, if the axial length of the first connecting part is h, and the axial length of the overlapping area is h1, then 1 ≥ h1 / h ≥ 0.3. If the axial length of the overlapping area relative to the first connecting part is too small, the contact support area between the connecting segment and the limiting segment and the connector will be too small, failing to provide good support and limiting, thus resulting in poor sealing performance. This design ensures that the overlapping area has a certain axial length, allowing the connecting segment and the limiting segment to have sufficient contact support area with the connector, effectively preventing the connector from deviating from the axis.

[0023] Furthermore, the connector is made of plastic, and the limiting member is made of metal; the axial length of the limiting member is greater than its radial thickness, and the radial thickness of the limiting member is greater than the radial thickness of the corresponding overlapping area of ​​the connector.

[0024] With this design, the metal limiting component has sufficient strength to provide effective support and limiting for the connector, preventing the plastic connector from deforming outward. At the same time, by limiting the relationship between the axial length and radial thickness of the limiting component, the limiting component can provide a larger axial length limiting segment to contact and connect with the second connecting part, ensuring that the limiting component and the connector are firmly fixed and the supporting and limiting function is stable.

[0025] Furthermore, the radial thickness of the connector at the overlapping area is 3-6 mm.

[0026] With this configuration, if the radial thickness of the connector at the overlapping area is less than 3mm, the connector is more prone to deformation under stress and pressure, requiring a larger axial length in the overlapping area to limit the connector's deviation from the axis. If the radial thickness of the connector at the overlapping area is greater than 6mm, the excessive wall thickness of the connector will require the limiting component to also increase its radial thickness and axial length to ensure effective support and limiting of the overlapping area, which will inevitably increase manufacturing costs and overall volume. Limiting the radial thickness of the connector at the overlapping area to 3-6mm can balance manufacturing costs and overall volume, while also providing effective support and limiting for the connector to prevent deformation.

[0027] The beneficial effects of this utility model are as follows: there is an axially overlapping area between the limiting section that is connected to the second connecting part and the connecting section that is connected to the first connecting part. Thus, the limiting part not only serves to fix the connecting part, but also, during the screwing of the connecting part and the connecting part, and / or during use, under the outward action of hydraulic pressure on the inner wall of the connecting part's flow channel, the limiting section of the limiting part can restrict the outward deformation of the wall thickness of the part where the first connecting part of the connecting part is located, effectively preventing the liquid tightness failure between the first connecting part and the connecting part. At the same time, when the connecting part itself undergoes inward deformation of its wall thickness, the connecting section that is connected to the first connecting part after the connecting part extends into the flow channel will also restrict the inward deformation of the connecting part's wall thickness, so that the limiting part connected to the second connecting part will not loosen. Thus, the limiting part can always press the top wall of the housing, effectively preventing the air tightness failure between the connecting part and the housing, and ensuring that the inner cavity of the housing can be effectively evacuated for degassing. In summary, compared to existing technologies, the design of the first connecting part being recessed, and the adapter and the limiting member cooperating with each other to clamp and support the flow channel wall thickness of the connecting part, ensures that the wall thickness of the connecting part will not undergo deformation inward and / or outward from the axis. This ensures a liquid seal between the adapter and the connecting part, while the limiting member ensures a gas seal between the connecting part and the housing. Ultimately, this achieves a combined effect of liquid sealing between the upper part of the connecting part and the adapter, and gas sealing between the lower part of the connecting part and the housing. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the hollow membrane fiber degassing assembly (excluding the adapter) according to Embodiment 1 of this utility model.

[0029] Figure 2 for Figure 1 Enlarged view of the structure at point A in the image.

[0030] Figure 3 This is a cross-sectional view of a connector according to an embodiment of the present invention.

[0031] Figure 4 This is a cross-sectional view of the hollow membrane fiber degassing assembly (including the adapter) according to Embodiment 2 of this utility model.

[0032] Among them, 1-shell, 11-inlet, 12-outlet, 14-cylinder, 15-cover, 2-hollow membrane bundle, 3-connector, 31-first connecting part, 311-guide area, 312-sealing area, 32-second connecting part, 321-connecting thread, 322-adjusting thread, 33-flow channel, 34-boob, 4-adapter, 41-connecting section, 5-limiting part, 51-limiting section, 6-overlapping area, 7-O-ring. Detailed Implementation

[0033] 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.

[0034] 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, a hollow membrane fiber bundle 2 located within 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 14 and a cover 15 that seals and covers the top of the cylindrical body 14. The cover 15 of the housing 1 has an inlet 11, an outlet 12, and a suction port (not shown in the figure). The inlet 11, outlet 12, and suction port are all circular through holes for installation. Two connectors 3 are respectively sealed and passed through the inlet 11 and outlet 12.

[0035] 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 11, and the other end is sealed and connected below the liquid outlet 12 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.

[0036] The connector 3 has an axially extending channel 33, which is referred to as the vertical direction in the attached figure, to define the extension direction of the channel 33. Therefore, the channel 33 can be vertical or slightly inclined. The channel 33 is used to connect the hollow membrane bundle 2 and the external pipeline (not shown in the figure). When the photoresist enters the channel 33 of the connector 3 in the liquid inlet 11 from the external pipeline, the liquid flows from inside the multiple tubular membrane filaments of the hollow membrane bundle 2. Then, a vacuum negative pressure source is connected from the air extraction port to evacuate the inner cavity of the housing 1, so that the gas trapped in the liquid of the tubular membrane filaments passes through the tube wall of the tubular membrane filaments and is extracted. The degassed photoresist liquid comes out from the channel 33 of the connector 3 in the liquid outlet 12. The above degassed principle is also the prior art and will not be described in detail.

[0037] like Figure 2 As shown, due to the presence of an axially penetrating flow channel 33, a first connecting portion 31 is formed on the inner wall of the connector 3, which is used to detachably seal and connect the adapter 4. One end of the adapter 4 is used to seal and connect the external pipeline, and the other end has a connecting section 41, which extends into the flow channel 33 and seals and connects with the first connecting portion 31.

[0038] like Figure 2 , Figure 3 As shown, the outer wall of the connector 3 has a second connecting portion 32, which is at least partially located outside the housing 1 and connected to a limiting member 5. The limiting member 5 is used to press against the top wall of the cover 15 of the housing 1, that is, the limiting member 5 is used to fix the housing 1 and the connector 3.

[0039] In this embodiment, the connector 3 is made of plastic. When the connector 3 is inserted into the connecting section 41 of the adapter 4 and connected to its first connecting part 31, the liquid pressure generated by the flow of photoresist during use exerts an outward force on the inner wall of the flow channel 33 of the connector 3. This causes the connector 3 to deform outward, deviating from its axis, leading to the failure of the sealing connection between the adapter 4 and the connector 3. At the same time, the connector 3 itself will also deform inward, deviating from its axis, after long-term use. At this time, a limiting member 5 made of metal is fitted around the outer periphery of the connector 3. The limiting member 5 must press against the top wall of the housing 1 to ensure the seal between the connector 3 and the housing 1. The inward deformation of the connector 3 wall thickness will cause the connection between the limiting member 5 and the connector 3 to loosen, resulting in the failure of the sealing connection between the housing 1 and the connector 3, which in turn leads to gas leakage when the housing 1 is evacuated.

[0040] Therefore, in this embodiment, the limiting member 5 has a limiting section 51 connected to the second connecting portion 32. When the connecting section 41 of the adapter 4 extends into the flow channel 33 and connects to the first connecting portion 31 of the connector 3, the limiting section 51 and the connecting section 41 have an overlapping area 6 in the axial direction. Specifically, as the name suggests, the limiting section 51 is the part connected to the second connecting portion 32, and the connecting section 41 is the part connected to the first connecting portion 31. Figure 2 The second connecting portion 32 has a certain length. The limiting member 51 does not completely connect to the second connecting portion 32, while the adapter 4 completely connects to the first connecting portion 31. When defining the limiting segment 51 and the connecting segment 41, only the parts used for connection and mating of the limiting member 51 and the adapter 4 are considered. Figure 2 S1 shown is the limiting segment 51, in Figure 2 S2 shown is the connecting segment 41. It should be noted that the overlapping area 6 here refers to the area where the limiting segment 51 and the connecting segment 41 overlap axially, that is, the area where S1 and S2 intersect axially. The overlapping area 6 extends from bottom to top, starting at the bottom horizontal plane of the connecting segment 41 and ending at the top horizontal plane of the limiting segment 51. Figure 2 The h1 region is shown in the image.

[0041] In the degassing assembly of this utility model, the connection of the connector 3 not only satisfies the requirement that the first connecting part 31 on the inner wall and the second connecting part 32 on the outer wall have axially overlapping portions, but more importantly, it satisfies the requirement that the limiting section 51 of the limiting member 5, which is connected to the second connecting part 32, and the connecting section 41 of the adapter 4, which is connected to the first connecting part 31, also have axially overlapping areas 6. Thus, the limiting member 5 not only serves to fix the connector 3, but also, during the screwing of the adapter 4 and the connector 3, and / or during use, under the outward action of hydraulic pressure on the inner wall of the flow channel 33 of the connector 3, the limiting section 51 of the limiting member 5 can... The inward deformation of the wall thickness of the first connecting part 31 of the connector 3 is restricted, which effectively prevents the liquid seal failure between the first connecting part 31 and the adapter 4. At the same time, even when the wall thickness of the connector 3 itself deforms inward, the connecting section 41 connected to the first connecting part 31 after the adapter 4 extends into the flow channel 33 will restrict the inward deformation of the wall thickness of the connector 3, so that the limiting member 5 connected to the second connecting part 32 will not loosen, and the limiting member 5 can always press the top wall of the housing 1, effectively preventing the air seal failure between the connector 3 and the housing 1, and ensuring that the inner cavity of the housing 1 can be effectively evacuated for degassing.

[0042] In other words, compared to the prior art, by designing the first connecting part 31 to be recessed, and by having the adapter 4 and the limiting member 5 cooperate with each other axially to clamp and support the wall thickness of the flow channel 33 of the connecting part 3, the wall thickness of the connecting part 3 will not undergo deformation inward or outward from the axis, thereby ensuring the liquid seal between the adapter 4 and the connecting part 3. At the same time, the limiting member 5 ensures the gas seal between the connecting part 3 and the housing 1, ultimately achieving the effect of liquid seal between the upper part of the connecting part 3 and the adapter 4, and gas seal between the lower part of the connecting part 3 and the housing 1.

[0043] It should be noted that the hollow membrane fiber degassing assembly in this utility model does not necessarily include the adapter 4 in its initial unused state. The adapter 4 is introduced to illustrate the positional relationship between the first connecting part 31 and the limiting section 51, specifically the axial positional relationship between the adapter 4 and the limiting member 5. In the above embodiment one, as... Figure 1 and Figure 2 As shown, the hollow fiber degassing assembly does not include adapter 4, therefore Figure 1 and 2 This is a cross-sectional view of the degassing assembly, but the adapter 4 is not cut open; it is directly inserted into the axial flow channel of the connector 3. In this case, the adapter 4 can be installed at the pipeline end in the application environment. Alternatively, the degassing assembly may not initially include the adapter 4, but it is added during use. Regardless of the situation, the adapter 4 must be used with the connector 3. Of course, in other embodiments, such as Embodiment 2 shown in Figure 4, the only difference between Embodiment 2 and Embodiment 1 is that the adapter 4 is a component of the degassing assembly. In this case, the adapter 4 is also cut open, and initially, it is threadedly connected to the first connecting part 31. That is, the adapter 4 is sold along with the degassing assembly. This connection method is simple, effective, and provides a reliable seal, facilitating subsequent use and operation.

[0044] Furthermore, the above does not limit the specific structures of the first connecting part 31 and the second connecting part 32, that is, it does not limit the sealing connection method between the adapter 4 and the connector 3, nor does it limit the sealing connection method between the limiting member 5 and the connector 3. In this embodiment, the second connecting part 32 has an external thread, the limiting section 51 is a nut that is threadedly connected to the second connecting part 32, the first connecting part 31 has an internal thread, and the adapter section 41 has an external thread that is threadedly connected to the first connecting part 31.

[0045] Specifically, the second connecting part 32 has a connecting thread 321 and an adjusting thread 322. The connecting thread 321 is used to connect to the limiting section 51, and the adjusting thread 322 extends from the lower end of the connecting thread 321 and can extend into the inlet 11 or outlet 12. In other words, by setting the connecting thread 321 and the adjusting thread 322, the second connecting part 32 extends towards the corresponding inlet 11 or outlet 12. Thus, when the limiting member 5 is threadedly connected to the second connecting part 32 and moves towards the boss 34 for installation, and the connecting member 3 moves upward from below the top wall of the housing 1 through the inlet 11 and / or outlet 12, and the O-ring 7 is gradually squeezed by the boss 34, because the O-ring 7 needs a certain axial compression to seal, the axial length of the thread connecting to the limiting section 51 is long enough to avoid the limiting member 5 not being fully compressed into the housing due to manufacturing errors. When the top wall of body 1 is closed and there is a gap between the two, and the bottom of the outer wall of connector 3 lacks the external thread that serves as the second connecting part 32, the limiting part 5 cannot move further downward to press the top wall of body 1. Connector 3 will fall down and be supported by gravity on the top wall of body 1 by the limiting part 5. The boss part 34 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 connecting thread 321 extends with the adjusting thread 322. The limiting part 5 is always threadedly connected to the connecting thread 321 or to the connecting thread 321 and the adjusting thread 322 to ensure that the connector 3 and body 1 effectively compress the O-ring 7 to form an airtight seal.

[0046] More specifically, the first connecting part 31 has a tapered thread, which has a guide area 311 and a sealing area 312. The sealing area 312 extends upward from the end of the guide area 311. The overlapping area 6 extends not only to the guide area 311 but also to the sealing area 312. The tapered thread typically includes a root tooth, which guides the thread of the connecting section 41. As the guide area 311, the threaded connection between the connecting section 41 and the first connecting part 31 in the guide area 311 cannot form an effective seal, and there is a gap between the threads. The predetermined area upward from the root tooth is threadedly connected to the connecting section 41, which forms the sealing area 312. This ensures that the connecting section 41 and the first connecting part 31 form an effective seal, extending the overlapping area 6 to the guide area 311. This ensures that the outer periphery of the sealing area 312 is limited by the limiting section 51, and that the wall thickness of the corresponding connecting member 3 does not deform. When liquid passes through the gap of the root tooth and squeezes the sealing area 312, it ensures an effective seal between the adapter 4 and the connecting member 3.

[0047] Regarding the specific location of the guide zone 311 terminal, it is located one-third of the way up from the end of the tapered thread facing the inner cavity of the housing 1. In other words, with Figure 3Taking the direction shown as an example, the guide area 311 extends upward from the bottom end of the tapered thread, and the end of the guide area 311 is at 1 / 3 of the total axial length of the tapered thread from bottom to top, that is... Figure 3 The S-shaped area is the guide area 311. If the axial length of the guide area 311 is too large, the axial length of the sealing area 312 will be reduced accordingly, making it impossible to guarantee an effective sealing connection between the connector 3 and the adapter 4. If the axial length of the guide area 311 is too small, the guide area 311 will not be able to achieve a good guiding function, increasing the assembly difficulty of the adapter 4 and the connector 3. Setting the end position of the guide area 311 at 1 / 3 above the end of the tapered thread facing the inner cavity of the housing 1 can take into account both the guiding and sealing functions, facilitating the initial installation while ensuring an effective sealing connection in the later stage.

[0048] Of course, in other embodiments, the adapter 4 and the connector 3 can also be an interference fit, with an O-ring seal to achieve a sealed connection. The limiting member 5 is a sleeve or clamp structure. In this case, the connecting section 41 of the adapter 4 and the first connecting part 31 of the connector 3 are inserted with an interference fit. The limiting section 51 of the limiting member 5 is not provided with an internal thread, and the second connecting part 32 of the connector 3 is not provided with an external thread. The sleeve or clamp structure presses against the top wall of the housing 1. As long as the limiting section 51 and the connecting section 41 have an overlapping area 6 in the axial direction, the adapter 4 and the limiting member 5 cooperate with each other to clamp and support the wall thickness of the flow channel 33 of the connector 3. This ensures that the wall thickness of the connector 3 will not deviate from the axis inward or outward, thereby ensuring the liquid seal between the adapter 4 and the connector 3. At the same time, the limiting member 5 ensures the gas seal between the connector 3 and the housing 1. Ultimately, it has the effect of liquid seal between the upper part of the connector 3 and the adapter 4, and gas seal between the lower part of the connector 3 and the housing 1. Of course, in other embodiments, the connection seal between the adapter 4 and the connector 3, and between the connector 3 and the limiting member 5, can also be other existing structures, and there are no specific limitations.

[0049] like Figure 2 As shown, the axial length of the first connecting part 31 is h, and the axial length of the overlapping area 6 is h1. Therefore, 1 ≥ h1 / h ≥ 0.3, which ensures that the overlapping area 6 has a certain axial length, so that the connecting section 41 and the limiting section 51 have sufficient contact support area with the connecting member 3, effectively preventing the connecting member 3 from deviating from the axis. If the axial length of the overlapping area 6 relative to the first connecting part 31 is too small, the contact support area of ​​the connecting section 41 and the limiting section 51 with the connecting member 3 will be too small, failing to provide good support and limiting function, resulting in poor sealing effect. 1 ≥ h1 / h ≥ 0.3 ensures that the overlapping area 6 has a certain axial length, so that the connecting section 41 and the limiting section 51 have sufficient contact support area with the connecting member 3, effectively preventing the connecting member 3 from deviating from the axis.

[0050] The axial length of the limiting member 5 is greater than its radial thickness, and the radial thickness of the limiting member 5 is greater than the radial thickness of the overlapping area 6 of the connecting member 3. The radial thickness of the connecting member 3 at the overlapping area 6 is 3-6 mm, that is... Figure 3 The radius L is 3-6mm. If the radial thickness of the connector 3 at the overlapping area 6 is less than 3mm, the connector 3 is more prone to deformation under stress and pressure, requiring the limiting member 5 to have a longer axial length to limit the deformation of the connector 3 from the axial direction. If the radial thickness of the connector 3 at the overlapping area 6 is greater than 6mm, the excessive wall thickness of the connector 3 will require the limiting member 5 to also increase its radial thickness and axial length to ensure effective support and limiting of the overlapping area 6 of the connector 3, which will inevitably increase manufacturing costs and overall volume. Limiting the radial thickness of the overlapping area 6 to 3-6mm can balance manufacturing costs and overall volume, and can also provide effective support and limiting for the connector 3, preventing it from deforming.

[0051] The radial thickness of the limiting member 5 is greater than the radial thickness of the corresponding overlapping area 6 of the connecting member 3, and the axial length of the limiting member 5 is greater than the radial thickness of the limiting member 5. This ensures that the metal limiting member 5 has sufficient strength to provide effective support and limiting for the connecting member 3, preventing the plastic connecting member 3 from deforming outward. At the same time, by limiting the relationship between the axial length and radial thickness of the limiting member 5, the limiting member 5 can provide a limiting segment 51 with a larger axial length to contact and connect with the second connecting part 32, ensuring that the limiting member 5 and the connecting member 3 are fixedly connected and the supporting and limiting function is stable. It also ensures that it has a good limiting and supporting function for the connecting member 3, preventing the connecting member 3 from deforming outward. At the same time, it can more effectively cooperate with the connecting segment 41 to form an internal and external supporting and limiting function for the connecting member 3, preventing the connecting member 3 from deforming inward and / or outward.

[0052] like Figure 2 , Figure 3As shown, the connector 3 has a boss 34 located inside the housing 1. A portion of the connector 3 extends from the inlet 11 or outlet 12 until the boss 34 is blocked by the cover 15. This causes the limiting member 5 and the boss 34 to clamp the top wall of the housing 1, specifically the cover 15, thus achieving a sealed assembly of the connector 3 and the housing 1. The boss 34 provides a positioning indicator for the installation of the housing 1 and the connector 3. Furthermore, the boss 34 and the limiting member 5 can form compression on the inner and outer surfaces of the top wall of the housing 1. Based on the fixed connection between the connector 3 and the housing 1 by the limiting member 5, the limiting member 5 and the boss 34 cooperate to achieve a sealed assembly of the connector 3 and the housing 1. Specifically, this can be a seal between the boss 34 and the inner surface of the top wall of the housing, or a seal using the O-ring 7 described below. This design makes the degassing assembly structure reasonable, achieving a sealed assembly of the housing 1 and the connector 3 with fewer parts, simplifying the assembly process. Only when the boss 34 and the limiting member 5 clamp the top wall of the housing 1 can the airtightness of the connector 3 and the housing 1 be ensured. The connecting section 41 restricts the inward deformation of the wall thickness of the part where the second connecting part 32 is located on the connector 3, and prevents the connection between the limiting member 5 and the deformed second connecting part 32 from becoming loose, the connector 3 from falling down, and the boss 34 and the limiting member 5 from being able to clamp the top wall of the housing 1, resulting in the failure of airtightness.

[0053] To achieve a sealed clamping, an O-ring 7 is clamped between the boss portion 34 and the cover 15. Specifically, an annular groove is cut into the boss portion 34, and the O-ring 7 is sealed and clamped within the annular groove, protruding from the top opening of the annular groove. The O-ring 7 ensures the sealing of the connection between the housing 1 and the connecting member 3. By placing the O-ring 7 between the boss portion 34 and the cover 15, the boss portion 34 provides space for the placement of the O-ring 7, facilitating assembly and preventing the O-ring 7 from shifting, thus ensuring a stable and effective seal. Furthermore, the limiting section 51 and the connecting section 41 have an overlapping area 6 in the axial direction, preventing deformation of the second connecting portion 32, thereby preventing loosening of the connection between the limiting member 5 and the connecting member 3. This prevents the connecting member 3 from falling downwards, causing the boss portion 34 and the limiting member 5 to fail to clamp the top wall of the housing 1, resulting in the O-ring 7 being compressed and loosened, leading to seal failure.

[0054] 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 membrane fiber degassing assembly, comprising a housing, a hollow membrane fiber bundle located within the housing, and connectors disposed at both ends of the hollow membrane fiber bundle, wherein the housing is provided with a liquid inlet, a liquid outlet, and a gas extraction port, and the connectors are sealed through the liquid inlet and / or the liquid outlet, and the connectors have axially extending flow channels for connecting the hollow membrane fiber bundle and a pipeline, characterized in that: The connector has a first connecting portion formed on its inner wall and a second connecting portion formed on its outer wall. The first connecting portion is used for detachably sealing the connection adapter. The adapter has a connecting section that extends into the flow channel and connects to the first connecting portion. The second connecting portion is at least partially located outside the housing and is connected to a limiting member that presses against the top wall of the housing. The limiting member has a limiting section that connects to the second connecting portion. When the adapter is connected to the connector, the limiting section and the connecting section have an overlapping area in the axial direction.

2. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The second connecting part is externally threaded, and the limiting section is threadedly connected to the second connecting part. The connecting member has a boss located inside the housing. The limiting member and the boss face each other to clamp the top wall of the housing to achieve a sealed assembly of the connecting member and the housing.

3. The hollow membrane fiber degassing assembly according to claim 2, characterized in that: The housing includes a cylindrical body and a cover that is sealed to the top of the cylindrical body, with an O-ring clamped and sealed between the boss portion and the cover.

4. The hollow membrane fiber degassing assembly according to claim 2, characterized in that: The second connecting part has a connecting thread that connects to the limiting section and an adjusting thread that extends from the lower end of the connecting thread, the adjusting thread extending into the inlet and / or outlet.

5. The hollow membrane fiber degassing assembly according to any one of claims 1-4, characterized in that: The first connecting part has an internal thread, and the degassing assembly includes an adapter with a connecting section that is threadedly connected to the first connecting part.

6. The hollow membrane fiber degassing assembly according to claim 5, characterized in that: The first connecting part is a tapered thread, the tapered thread has a guide area and a sealing area extending upward from the end of the guide area, and the overlapping area extends to the sealing area.

7. The hollow membrane fiber degassing assembly according to claim 6, characterized in that: The guide zone terminal is located one-third of the way up from the end of the tapered thread facing the inner cavity of the housing.

8. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The axial length of the first connecting part is h, and the axial length of the overlapping area is h1, then 1≥h1 / h≥0.

3.

9. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The connector is made of plastic, and the limiting member is made of metal; the axial length of the limiting member is greater than its radial thickness, and the radial thickness of the limiting member is greater than the radial thickness of the corresponding overlapping area of ​​the connector.

10. The hollow membrane fiber degassing assembly according to claim 1, characterized in that: The radial thickness of the connector at the corresponding overlapping area is 3-6 mm.

Images