Novel flat sheet membrane pressing device

Abstract

The utility model discloses a novel flat sheet membrane pressing device which comprises a pressing table, and the top of the pressing table is fixedly connected with a supporting frame. The linear moving platform is horizontally connected to the pressing table in a sliding mode, and a linear moving assembly is installed on the pressing table; the pressing mechanism is mounted on the supporting frame; the number of the material moving mechanisms is two, and the two material moving mechanisms are symmetrically arranged on the two sides of the supporting frame; the mold comprises an upper mold plate and a lower mold plate, the PVDF film is arranged between the upper mold plate and the lower mold plate, two sets of positioning assemblies are arranged on the linear moving platform, and the positioning assemblies are in limiting fit with the lower mold plate; the curves of the longitudinal sections of the upper die plate and the lower die plate comprise a plurality of arc-shaped sections and a plurality of linear sections, and the arc-shaped sections and the linear sections alternately form a corrugated structure. The PVDF film formed by pressing is large in surface pattern size, simple and easy to generate, and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of membrane preparation technology, and in particular to a novel flat sheet membrane pressing device. Background Technology

[0002] Membrane bioreactors (MBRs) are highly efficient wastewater treatment technologies that combine biological wastewater treatment with membrane separation. They have been widely applied in environmental protection and water resource recycling. MBRs utilize membrane technology to retain activated sludge and large organic molecules, exhibiting excellent solid-liquid separation capabilities and serving as a replacement for secondary sedimentation tanks. The introduction of submerged membrane bioreactors has further significantly reduced operating costs, leading to the widespread adoption of the MBR process.

[0003] Membrane fouling is one of the main limiting factors in the development of membrane bioreactors (MBRs), significantly impacting their performance and increasing their operating energy consumption. Membrane fouling refers to the deposition of suspended solids or soluble substances on the membrane surface during MBR operation, clogging the membrane pores and leading to a decrease in membrane flux. As an emerging research field in MBR applications, patterned membranes are a non-chemical strategy to improve MBR performance by altering the shape and structure of the membrane surface. Currently, the application of surface patterned membrane technology faces challenges such as high cost and complex processes. Based on these reasons, this invention provides a novel flat-sheet membrane pressing device. Utility Model Content

[0004] The purpose of this invention is to provide a novel flat film pressing device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a novel flat film pressing device, comprising:

[0006] A pressing table, the top of which is fixedly connected to a support frame;

[0007] A linear motion platform is horizontally slidably connected to the pressing table. A linear motion component is installed on the pressing table, and the linear motion component and the linear motion platform are in a transmission engagement.

[0008] A pressing mechanism, which is mounted on the support frame;

[0009] The material transfer mechanism is provided in two sets, which are symmetrically arranged on both sides of the support frame. The material transfer mechanism is correspondingly arranged with the linear moving platform.

[0010] The mold includes an upper template and a lower template, which are arranged parallel to each other. A PVDF film is disposed between the upper template and the lower template. The upper template is correspondingly disposed with the pressing mechanism, and the lower template is correspondingly disposed with the linear moving platform. Two sets of positioning components are provided on the linear moving platform, and the positioning components are limited to the lower template.

[0011] The curves of the longitudinal sections of the upper template and the lower template include several arc segments and several straight segments, and the arc segments and straight segments alternately form a corrugated structure.

[0012] The chord length of the arc corresponding to the arc segment is 80mm.

[0013] According to the novel flat film pressing device provided by this utility model, the linear motion component includes screws, and two sets of screws are provided. The two sets of screws are rotatably connected to the top surface of the pressing table in parallel. The screws pass through the linear motion platform and are threadedly connected to the linear motion platform. A drive motor is fixedly connected to the bottom of the pressing table. A drive sprocket is fixedly connected to the output shaft of the drive motor. Driven sprockets are fixedly connected to the ends of the two screws respectively. The drive sprockets and the driven sprockets are connected by chain transmission.

[0014] According to the novel flat film pressing device provided by this utility model, the pressing mechanism includes a pressing cylinder vertically fixedly connected to the support frame, and a pressing block is fixedly connected to the output shaft of the pressing cylinder, and the pressing block is correspondingly arranged with the upper template.

[0015] According to the novel flat film pressing device provided by this utility model, the material transfer mechanism includes a track vertically fixedly connected to the pressing table, a linear motor vertically slidably connected to the track, the linear motor being arranged parallel to the pressing table, a lifting cylinder being fixedly connected to the pressing table, the lifting cylinder being fixedly connected to the end of the linear motor, and a mechanical gripper being installed on the linear motor.

[0016] According to the novel flat film pressing device provided by this utility model, the positioning component includes four sets of positioning cylinders, which are arranged in a rectangular structure and respectively abut against the four sides of the upper template and the lower template.

[0017] According to the novel flat film pressing device provided by this utility model, the length of the straight segment is 1mm-2mm.

[0018] According to the novel flat sheet membrane pressing device provided by this utility model, the PVDF membrane has a pore size of 0.22μm.

[0019] The present invention discloses the following technical effects:

[0020] In this invention, the upper and lower templates are both corrugated on opposite sides. The PVDF film is placed between the upper and lower templates. The lower template is fixed to the linear moving platform by a positioning component. The linear moving platform is moved horizontally by the linear moving component, so that the mold reaches the bottom of the support frame. Pressure is applied by the pressing mechanism, so that the PVDF film forms a pattern corresponding to the upper and lower templates. After pressing, it is sent out and the material is loaded and unloaded by a material transfer mechanism.

[0021] The PVDF membrane formed by pressing according to this invention has a large surface pattern size, is simple to generate, and has low production cost. Compared with traditional flat sheet membranes, the PVDF membrane made by this invention has less pollutant accumulation and stronger antifouling ability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the flat film pressing device of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the mold of this utility model;

[0025] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0027] Figure 5 This is a cross-sectional view of the PVDF membrane of this utility model.

[0028] The components include: 1. Pressing table; 2. Support frame; 3. Linear moving platform; 4. Upper template; 5. Lower template; 6. PVDF film; 7. Screw; 8. Drive motor; 9. Drive sprocket; 10. Driven sprocket; 11. Chain; 12. Pressing cylinder; 13. Pressing block; 14. Linear motor; 15. Lifting cylinder; 16. Mechanical gripper; and 17. Positioning cylinder. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-5 This utility model provides a novel flat film pressing device, comprising:

[0032] Pressing table 1, with a support frame 2 fixedly connected to the top of pressing table 1;

[0033] Linear moving platform 3 is horizontally slidably connected to pressing table 1. Linear moving component is installed on pressing table 1, and there is a transmission cooperation between linear moving component and linear moving platform 3.

[0034] A pressing mechanism is mounted on support frame 2.

[0035] The material transfer mechanism is provided in two sets, which are symmetrically arranged on both sides of the support frame 2. The material transfer mechanism is correspondingly set with the linear moving platform 3.

[0036] The mold includes an upper template 4 and a lower template 5, which are arranged in parallel facing each other. A PVDF film 6 is placed between the upper template 4 and the lower template 5. The upper template 4 is arranged in relation to the pressing mechanism, and the lower template 5 is arranged in relation to the linear moving platform 3. The linear moving platform 3 is provided with two sets of positioning components, which are matched with the lower template 5 for limiting.

[0037] Among them, the curves of the longitudinal sections of the upper template 4 and the lower template 5 include several arc segments and several straight segments, and the several arc segments and several straight segments alternate to form a corrugated structure;

[0038] The chord length of the arc corresponding to the arc segment is 80mm.

[0039] In this invention, the upper template 4 and the lower template 5 are both corrugated on opposite sides. The PVDF film 6 is placed between the upper template 4 and the lower template 5. The lower template 5 is fixed on the linear moving platform 3 by a positioning component. The linear moving platform 3 is moved horizontally by the linear moving component so that the mold reaches below the support frame 2. Pressure is applied by the pressing mechanism so that the PVDF film 6 forms a pattern corresponding to the upper template 4 and the lower template 5. After pressing, it is sent out and the material is loaded and unloaded by a material transfer mechanism.

[0040] This embodiment employs a dual-station working mode to ensure processing efficiency.

[0041] Further optimization of the scheme: the linear motion component includes screws 7, and two sets of screws 7 are provided. The two sets of screws 7 are rotatably connected to the top surface of the pressing table 1 in parallel. The screws 7 pass through the linear motion platform 3 and are threadedly connected to the linear motion platform 3. A drive motor 8 is fixedly connected to the bottom of the pressing table 1. A drive sprocket 9 is fixedly connected to the output shaft of the drive motor 8. Driven sprockets 10 are fixedly connected to the ends of the two screws 7 respectively. The drive sprocket 9 and the driven sprocket 10 are driven by a chain 11.

[0042] The linear moving platform 3 has a horizontal threaded through hole, through which the screw 7 passes and is threadedly connected. The linear moving platform 3 uses a sliding fit between the track and the pressing table 1.

[0043] The scheme is further optimized. The pressing mechanism includes a pressing cylinder 12 that is vertically fixedly connected to the support frame 2. The output shaft of the pressing cylinder 12 is fixedly connected to a pressing block 13, and the pressing block 13 is set in correspondence with the upper template 4.

[0044] Further optimization of the scheme: the material transfer mechanism includes a track vertically fixedly connected to the pressing table 1, a linear motor 14 vertically slidably connected to the track, the linear motor 14 being arranged parallel to the pressing table 1, a lifting cylinder 15 fixedly connected to the pressing table 1, the lifting cylinder 15 being fixedly connected to the end of the linear motor 14, and a mechanical gripper 16 being installed on the linear motor 14.

[0045] The mechanical gripper 16 includes a gripper arm and a gripper rod. A mounting base is installed on the linear motor 14. The gripper arm is fixed on the mounting base. The gripper rod is rotatably connected to the gripper arm. An electrically controlled push rod is vertically fixedly connected to the mounting base. A mounting block is fixedly connected to the end of the electrically controlled push rod. A connecting arm is symmetrically rotatably connected to the mounting block. The connecting arm and the gripper rod are rotatably connected to form an M-shaped structure. A clamping plate is installed at the end of the gripper rod. The mold is clamped by the clamping plate to realize the transfer of the mold.

[0046] The scheme is further optimized. The positioning component includes four sets of positioning cylinders 17. The four sets of positioning cylinders 17 are arranged in a rectangular structure and abut against the four sides of the upper template 4 and the lower template 5, respectively.

[0047] The scheme was further optimized so that the length of the straight segment was 1mm-2mm.

[0048] Further optimization resulted in a pore size of 0.22 μm for PVDF membrane 6.

[0049] The design was further optimized, with both the upper template 4 and the lower template 5 being manufactured using 3D printing.

[0050] The scheme has been further optimized. PVDF membrane 6 includes an upper PVDF thin film layer, an Al2O3 nanoparticle layer, an intermediate layer, a TiO2 nanoparticle layer, and a lower PVDF thin film layer.

[0051] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0052] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A novel flat film pressing device, characterized in that, include: A pressing table (1), the top of which is fixedly connected to a support frame (2); A linear moving platform (3) is horizontally slidably connected to the pressing table (1). A linear moving component is installed on the pressing table (1), and the linear moving component and the linear moving platform (3) are in transmission cooperation. A pressing mechanism, which is mounted on the support frame (2); The material transfer mechanism is provided in two sets, which are symmetrically arranged on both sides of the support frame (2). The material transfer mechanism is correspondingly arranged with the linear moving platform (3). The mold includes an upper template (4) and a lower template (5), which are arranged in parallel facing each other. A PVDF film (6) is disposed between the upper template (4) and the lower template (5). The upper template (4) is correspondingly disposed with the pressing mechanism, and the lower template (5) is correspondingly disposed with the linear moving platform (3). The linear moving platform (3) is provided with two sets of positioning components, which are limited to the lower template (5). The curves of the longitudinal sections of the upper template (4) and the lower template (5) include several arc segments and several straight segments, and the arc segments and straight segments alternately form a corrugated structure. The chord length of the arc corresponding to the arc segment is 80mm.

2. The novel flat film pressing device according to claim 1, characterized in that: The linear motion assembly includes two sets of screws (7), which are rotatably connected to the top surface of the pressing table (1) in parallel. The screws (7) pass through the linear motion platform (3) and are threadedly connected to the linear motion platform (3). A drive motor (8) is fixedly connected to the bottom of the pressing table (1). A drive sprocket (9) is fixedly connected to the output shaft of the drive motor (8). Driven sprockets (10) are fixedly connected to the ends of the two screws (7). The drive sprockets (9) and the driven sprockets (10) are connected by a chain (11) for transmission.

3. The novel flat film pressing device according to claim 1, characterized in that: The pressing mechanism includes a pressing cylinder (12) that is vertically fixedly connected to the support frame (2). The output shaft of the pressing cylinder (12) is fixedly connected to a pressing block (13), and the pressing block (13) is correspondingly arranged with the upper template (4).

4. The novel flat film pressing device according to claim 1, characterized in that: The material transfer mechanism includes a track vertically fixedly connected to the pressing table (1), a linear motor (14) vertically slidably connected to the track, the linear motor (14) being arranged parallel to the pressing table (1), a lifting cylinder (15) being fixedly connected to the pressing table (1), the lifting cylinder (15) being fixedly connected to the end of the linear motor (14), and a mechanical gripper (16) being installed on the linear motor (14).

5. The novel flat film pressing device according to claim 1, characterized in that: The positioning component includes four sets of positioning cylinders (17), which are arranged in a rectangular structure and respectively abut against the upper template (4) and the lower template (5).

6. The novel flat film pressing device according to claim 1, characterized in that: The length of the straight line segment is 1mm-2mm.

7. The novel flat film pressing device according to claim 1, characterized in that: The PVDF membrane (6) has a pore size of 0.22 μm.

Images