Column type hollow fiber membrane centrifugal pouring equipment

Abstract

The utility model discloses centrifugal pouring equipment for a column type hollow fiber membrane, and belongs to the field of hollow fiber membrane assembly. The equipment structurally comprises a rotating table and a mounting frame. The rotating table is used for driving the mounting rack to rotate; the mounting rack is used for mounting a membrane shell and centrifugally injecting glue; the mounting frame comprises a rotating column, a glue injection disc and an assembly clamping groove; wherein the rotating column is connected with the rotating table, and the glue injection disc is fixedly connected to the top of the rotating column; a plurality of mounting grooves are uniformly formed in the circumferential direction of the glue injection disc at intervals, one ends of the assembly clamping grooves are hinged into the mounting grooves, and the assembly shell is connected with the assembly clamping grooves; a glue containing cavity is formed in the glue injection disc, a connecting buckle is arranged on the glue injection disc and communicated with the glue containing cavity, the connecting buckle is used for being connected with a rotary connector, a plurality of glue outlets are evenly formed in the upper end face of the glue injection disc in the circumferential direction at intervals, the glue outlets are communicated with the glue containing cavity, and the glue outlets are connected with the assembly shell through pipelines. Batch pouring of the small hollow fiber assemblies can be achieved, and the working efficiency is improved; and uniform distribution of the glue solution is realized through rotating centrifugal force, and the problems of unevenness and bubbles easily occurring in the glue injection process are solved.

Description

Technical Field

[0001] This utility model belongs to the field of hollow fiber membrane module assembly technology, specifically a column-type hollow fiber membrane module centrifugal casting equipment. Background Technology

[0002] Hollow fiber membranes, as highly efficient separation and filtration materials, have wide and crucial applications in numerous fields. For example, in water treatment, they can be used for wastewater purification and seawater desalination; in the biopharmaceutical industry, they enable the separation and purification of biomolecules; and they play an important role in gas separation. With their high specific surface area and strong self-support, they have become an indispensable core component in related processes. In the manufacturing process of hollow fiber membranes, the adhesive injection process is extremely important. Its purpose is to fill the membrane shell with adhesive, which serves to fix, seal, and protect the hollow fiber membrane fibers. Traditional adhesive injection methods mostly employ static injection, where the membrane shell is stationary, and the adhesive slowly flows into the internal space of the membrane shell through simple gravity or with the assistance of a small external force (such as a slight pressure difference).

[0003] The static adhesive injection process is relatively gentle, and the adhesive easily traps air as it flows into the membrane shell, forming bubbles that are difficult to escape on their own. Lacking effective external force to expel these bubbles, they remain in the adhesive layer within the membrane shell. Once the adhesive cures, these bubble locations create voids or weak points, not only compromising the integrity of the adhesive layer but also potentially causing uneven stress on the membrane fibers during use. This reduces key performance indicators such as fiber strength and flux, severely impacting the quality and lifespan of hollow fiber membrane products.

[0004] A columnar hollow fiber membrane module is disclosed in patent application number CN202323264951.3. The specific structure of this columnar hollow fiber membrane module can be seen from the attached drawings. It is understandable that if air bubbles are generated during the adhesive injection process, these air bubbles will create weak points, leading to uneven stress on the membrane fibers during use and reducing key performance indicators such as fiber strength and flux. Therefore, there is an urgent need for an adhesive injection device that can effectively solve the problem of air bubble residue. Utility Model Content

[0005] The purpose of this invention is to provide a column-type hollow fiber membrane centrifugal casting device to solve the following technical problems mentioned in the background art:

[0006] In current technology, during the injection of adhesive into the membrane shell, there is a problem of small batch size, which leads to low injection efficiency. At the same time, there is also a problem that air bubbles are easily trapped during the flow of adhesive into the membrane shell.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A column-type hollow fiber membrane centrifugal casting device includes a rotary table and a mounting frame. The rotary table drives the mounting frame to rotate, and the mounting frame is used to install the membrane shell and inject adhesive. The mounting frame includes a rotating column, an adhesive injection tray, and a component slot. The rotating column is connected to the rotary table, and the adhesive injection tray is fixed to the top of the rotating column. The adhesive injection tray has several mounting slots evenly spaced around its circumference. One end of the component slot is hinged in the mounting slot, and the component shell is connected to the component slot. The adhesive injection tray has an adhesive cavity, and a connecting buckle is provided on the adhesive injection tray. The connecting buckle communicates with the adhesive cavity and is used to connect a rotary joint. Several adhesive outlets are evenly spaced around the circumference on the upper surface of the adhesive injection tray. The adhesive outlets communicate with the adhesive cavity and are connected to the component shell through pipes.

[0009] Furthermore, the rotary table includes a base, a drive motor, and a rotating disk; the rotating disk is rotatably connected to the base, and the drive motor is connected to the base and drives the rotating disk to rotate.

[0010] Furthermore, the output shaft of the drive motor is connected to the reducer, the output end of the reducer is connected to the drive gear, and the bottom of the rotating disk is fixed to the driven gear, which meshes with the drive gear.

[0011] Furthermore, a connecting plate is fixed to the bottom of the rotating column, and the connecting plate is connected to the rotating plate.

[0012] Furthermore, the connecting disc and the rotating disc are connected by bolts.

[0013] Furthermore, the dispensing tray is provided with eight mounting slots spaced circumferentially, and component slots are hinged in the mounting slots.

[0014] Furthermore, the component slot has an L-shaped structure.

[0015] Furthermore, an aeration hole pre-installed pipe is provided on the side of the component housing away from the rotation center of the dispensing disc.

[0016] Furthermore, the outlet is connected to the component housing via a rubber hose.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention achieves uniform distribution of the adhesive solution through centrifugal force, solving the problems of unevenness and air bubbles that easily occur during the adhesive injection process. Centrifugal force promotes the movement and expulsion of air bubbles in the adhesive solution, preventing air bubbles from remaining in the adhesive layer and forming voids or weak points. This casting method has higher strength than static casting, ensuring the integrity of the adhesive layer. In addition, the multi-station design allows for the simultaneous processing of multiple membrane shells, enabling batch casting. It is suitable for casting small components in hemodialysis and laboratory applications, effectively improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the mounting bracket of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the mounting bracket of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the rotary table of this utility model.

[0023] The markings in the diagram are: 1-rotary table, 2-mounting bracket, 3-glue injection tray, 4-component housing, 5-aeration hole pre-reserved pipe, 6-connecting plate, 7-rotating column, 8-glue injection port, 9-component slot, 10-mounting groove, 11-glue outlet, 12-connecting buckle, 13-glue receiving cavity, 14-base, 15-drive motor, 16-drive gear, 17-driven gear, 18-rotary disk, 19-reducer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] A column-type hollow fiber membrane centrifugal casting device includes a rotary table 1 and a mounting frame 2. The rotary table 1 drives the mounting frame 2 to rotate, and the mounting frame 2 is used to install the membrane shell and inject adhesive. The mounting frame 2 includes a rotating column 7, an adhesive injection plate 3, and a component slot 9. The rotating column 7 is connected to the rotary table 1, and the adhesive injection plate 3 is fixed to the top of the rotating column 7. The adhesive injection plate 3 is provided with a plurality of mounting slots 10 evenly spaced around its circumference. One end of the component slot 9 is hinged in the mounting slot 10, and the component shell 4 is connected to the component slot 9. The adhesive injection plate 3 is provided with an adhesive cavity 13, and a connecting buckle 12 is provided on the adhesive injection plate 3. The connecting buckle 12 communicates with the adhesive cavity 13 and is used to connect a rotary joint. The upper surface of the adhesive injection plate 3 is provided with a plurality of adhesive outlets 11 evenly spaced around its circumference. The adhesive outlets 11 communicate with the adhesive cavity 13 and are connected to the component shell 4 through pipes.

[0027] Specifically, in use, the component housing 4 is installed on the component slot 9, one end of which is hinged to the mounting groove 10 of the dispensing tray 3. This hinged design allows the component housing 4 to automatically adjust its angle according to centrifugal force during subsequent rotation, which is beneficial for uniform distribution of the adhesive. A rotary joint is connected via a connecting buckle 12, which enables adhesive delivery between the dispensing tray 3 and the adhesive supply device. The adhesive enters the dispensing cavity 13 of the dispensing tray 3 from the external adhesive supply device through the rotary joint. The rotating table 1 starts working, driving the rotating column 7 and the dispensing tray 3, which is fixed to the top of the rotating column 7, to rotate. Since the dispensing tray 3 has component slots 9 evenly spaced around its circumference, and the component housing 4 is installed on the component slots 9, the component housing 4 also begins to rotate and gradually changes from a vertical to a horizontal state. Under the action of centrifugal force generated by the rotation, the adhesive in the dispensing cavity 13 flows out from the dispensing outlets 11 evenly spaced around its circumference on the upper surface of the dispensing tray 3. The adhesive outlet 11 is connected to the component housing 4 via a pipe, and the adhesive is transported into the component housing 4 through the pipe. The adhesive inside the component housing 4 is evenly distributed under centrifugal force, avoiding air bubbles and sedimentation. This centrifugal casting method also results in higher strength than static casting. The design of this column-type hollow fiber membrane centrifugal casting equipment makes it suitable for casting small components in hemodialysis and laboratory settings, thereby improving production efficiency.

[0028] In a preferred embodiment, the rotary table 1 includes a base 14, a drive motor 15, and a rotating disk 18. The rotating disk 18 is rotatably connected to the base 14, and the drive motor 15 is connected to the base 14 and drives the rotating disk 18 to rotate. Further optimized, the output shaft of the drive motor 15 is connected to a reducer 19, the output end of the reducer 19 is connected to a drive gear 16, and a driven gear 17 is fixedly connected to the bottom of the rotating disk 18, meshing with the drive gear 16. The base 14 serves as a support component, providing a stable support foundation for the entire rotary table 1. The output shaft of the drive motor 15 is connected to the reducer 19, which can reduce the motor's output speed and increase torque. During the centrifugal casting process of column-type hollow fiber membranes, different specifications of membrane shells and different types of adhesives require different rotational speeds to achieve the optimal adhesive injection effect. The reducer 19 allows for flexible adjustment of the rotational speed of the rotating disk 18 to adapt to different production needs, improving the equipment's versatility and adaptability. The output end of the reducer 19 is connected to the drive gear 16, and the driven gear 17, fixedly grounded at the bottom of the rotating disk 18, meshes with the drive gear 16. This gear transmission method enables smooth power transmission. Furthermore, the gear transmission effectively transmits the increased torque from the reducer 19 to the rotating disk 18. During centrifugal casting, the rotating disk 18 needs to drive the mounting bracket 2 and the component housing 4 to rotate together, requiring a large torque to overcome inertia and friction. Through gear transmission, the torque output from the reducer 19 can be reliably transmitted to the rotating disk 18, ensuring that the rotating disk 18 can smoothly drive the entire load to rotate and guaranteeing the normal operation of the equipment.

[0029] In a preferred embodiment, a connecting plate 6 is fixedly connected to the bottom of the rotating column 7, and the connecting plate 6 is connected to the rotating disk 18. More preferably, the connecting plate 6 and the rotating disk 18 are connected by bolts. The connecting plate 6 securely connects the rotating column 7 and the rotating disk 18 together. During equipment operation, the rotating column 7 and the components mounted above it will generate a certain gravitational load, and will also generate an additional centrifugal force load due to centrifugal force. The secure connection between the connecting plate 6 and the rotating disk 18 by bolts allows the rotating disk 18 to reliably bear these loads from the rotating column 7 and its associated components, ensuring that the overall structure of the equipment remains stable even under significant forces.

[0030] In a preferred embodiment, the dispensing tray 3 is provided with eight circumferentially spaced mounting slots 10, and component retaining slots 9 are hinged within the mounting slots 10. The eight mounting slots 10 mean that the equipment can simultaneously mount eight component housings 4 for dispensing operations. This multi-station parallel working mode can significantly increase the amount of dispensing per unit time, greatly improving production efficiency.

[0031] In a preferred embodiment, the component slot 9 has an L-shaped structure. This structure allows the component slot 9 to be easily connected to the component housing 4.

[0032] In a preferred embodiment, an aeration hole pre-reserved pipe 5 is provided on the side of the component housing 4 away from the rotation center of the injection plate 3. After the casting is completed, the pre-reserved aeration hole pre-reserved pipe 5 forms a through hole, which facilitates subsequent aeration and cleaning.

[0033] In a preferred embodiment, the dispensing port 11 is connected to the component housing 4 via a rubber hose. Specifically, the component housing 4 is provided with a filling port 8, and the rubber hose connects the dispensing port 11 to the filling port 8. During equipment operation, the mounting frame 2 rotates at high speed with the rotary table 1, and the component housing 4, being hinged to the component slot 9 of the filling disc 3, experiences a certain dynamic change in angle under centrifugal force. The rubber hose has good flexibility and bendability, allowing it to bend and twist accordingly with changes in the angle of the diaphragm housing, thus providing cushioning and compensation.

[0034] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A columnar hollow fiber membrane centrifugal casting apparatus characterized by: The utility model provides a kind of film shell injection molding device, including rotating table (1) and mounting frame (2), rotating table (1) is used to drive mounting frame (2) to rotate, and mounting frame (2) is used to install film shell and glue injection; The mounting frame (2) includes a rotating column (7), a glue injection disc (3) and an assembly clamping groove (9). The rotating column (7) is connected with the rotating table (1), and the glue injection disc (3) is fixedly connected to the top of the rotating column (7). The glue injection disc (3) is uniformly and spacedly provided with a plurality of mounting grooves (10) in the circumferential direction, and one end of the assembly clamping groove (9) is hingedly connected in the mounting groove (10). The assembly shell (4) is connected with the assembly clamping groove (9). The glue injection disc (3) is provided with a glue containing cavity (13) therein. The glue injection disc (3) is provided with a connecting buckle (12) thereon. The connecting buckle (12) is in communication with the glue containing cavity (13). The connecting buckle (12) is used to connect a rotating joint. A plurality of glue outlets (11) are uniformly and spacedly provided on the upper end surface of the glue injection disc (3) in the circumferential direction. The glue outlets (11) are in communication with the glue containing cavity (13). The glue outlets (11) are connected with the assembly shell (4) through a pipeline.

2. A column type hollow fiber membrane centrifugal casting apparatus according to claim 1, characterized by: The rotating table (1) includes a base (14), a driving motor (15) and a rotating disc (18). The rotating disc (18) is rotatably connected with the base (14) through the rotating column (7). The driving motor (15) is connected with the base (14) and drives the rotating disc (18) to rotate.

3. A column-type hollow fiber membrane centrifugal casting apparatus according to claim 2, characterized by: The output shaft of the driving motor (15) is connected with a speed reducer (19). The output end of the speed reducer (19) is connected with a driving gear (16). The bottom of the rotating disc (18) is fixedly connected with a driven gear (17). The driven gear (17) is engaged with the driving gear (16).

4. A column type hollow fiber membrane centrifugal casting apparatus according to claim 2, characterized by: The bottom of the rotating column (7) is fixedly connected with a connecting disc (6). The connecting disc (6) is connected with the rotating disc (18).

5. A column-type hollow fiber membrane centrifugal casting apparatus according to claim 4, characterized in that: The connecting disc (6) and the rotating disc (18) are connected through bolts.

6. A column type hollow fiber membrane centrifugal casting apparatus according to claim 1, characterized by: The glue injection disc (3) is uniformly and spacedly provided with eight mounting grooves (10) in the circumferential direction. The assembly clamping groove (9) is hingedly connected in the mounting groove (10).

7. A column type hollow fiber membrane centrifugal casting apparatus according to claim 1, characterized by: The assembly clamping groove (9) is in L-shaped structure.

8. A column type hollow fiber membrane centrifugal casting apparatus according to claim 1, characterized by: The assembly shell (4) is provided with an aeration hole reserved pipe (5) on the side away from the rotation center of the glue injection disc (3).

9. A column type hollow fiber membrane centrifugal casting apparatus according to claim 1, characterized by: The glue outlet (11) is connected with the assembly shell (4) through a rubber hose.

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