A platen press

Abstract

The application relates to a film presser for preparing a film body from a raw solution, which comprises a base, a bearing platform, an extrusion assembly, a scraping assembly and an elution assembly; the bearing platform is arranged on the base and used for placing the raw solution; the extrusion assembly is slidably arranged on the base along a first direction and used for extruding the raw solution along the first direction so that the raw solution spreads outward on the bearing platform, and the first direction is perpendicular to the bearing platform; the scraping assembly is slidably arranged on the base along the first direction, and the scraping assembly scrapes the spread raw solution along a second direction to form a film body with uniform thickness, wherein the second direction is perpendicular to the first direction; and the elution assembly is movably arranged on the base and used for conveying an elution solution to the bearing platform, and the elution solution flushes the film body to remove the solvent of the film body. The film presser can prepare the film body with uniform thickness and without solvent residue through the processes of spreading, scraping and elution, and accurate detection data can be obtained in subsequent detection and analysis.

Description

Technical Field

[0001] This application relates to the field of film pressing machine technology, and more particularly to a film pressing machine. Background Technology

[0002] In the process of preparing the stock solution into a membrane, the solvent needs to be removed for detection and analysis. Due to the poor fluidity of the stock solution, it is difficult to spread it evenly when dropped directly, making it difficult to form a membrane of uniform thickness. In addition, solvent is also more likely to remain, affecting the accuracy of detection. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this application provides a film pressing machine.

[0004] According to an embodiment of this disclosure, a film pressing machine is provided for preparing a film from a stock solution, comprising:

[0005] Base;

[0006] A support platform is disposed on the base, and the support platform is used to hold the raw liquid;

[0007] An extrusion assembly is slidably disposed on the base along a first direction. The extrusion assembly is used to extrude the raw liquid along the first direction, causing the raw liquid to diffuse outward on the support platform. The first direction is perpendicular to the support platform.

[0008] A coating assembly is slidably disposed on the base along the first direction. The coating assembly coats the diffused original liquid along the second direction to form a film of uniform thickness, wherein the second direction is perpendicular to the first direction.

[0009] An elution assembly is movably mounted on the base, with its outlet end rotatably mounted relative to the base. The elution assembly is used to deliver eluent to the support platform, and the eluent washes the membrane to remove the solvent from the membrane.

[0010] In some embodiments, an adjustment component is further included, the adjustment component being disposed on the base, the extrusion component and the scraping component being disposed on the adjustment component, and the adjustment component being used to drive the extrusion component and the scraping component to slide along the first direction.

[0011] In some embodiments, the adjustment assembly includes a column, a first slider, and a second slider;

[0012] The column is disposed on the base, and the extension direction of the column is the same as the first direction;

[0013] The first slider is slidably disposed on the column along the first direction, and the extrusion assembly is connected to the first slider;

[0014] The second slider is slidably disposed on the column along the first direction, and the scraping assembly is connected to the second slider. Along the first direction, the scraping assembly is located between the extrusion assembly and the support platform.

[0015] In some embodiments, the extrusion assembly includes a support member and a pressure plate. The support member is connected to the adjustment assembly, and the pressure plate is rotatably disposed on the side of the support member near the bearing platform. The bearing platform includes a bearing plane, and the pressure plate is disposed parallel to the bearing plane.

[0016] In some embodiments, the extrusion assembly further includes a connecting shaft and a crank handle. The connecting shaft extends in the same direction as the first direction and is rotatably mounted on the support member. One end of the connecting shaft near the bearing platform is connected to the pressure plate, and the other end of the connecting shaft is connected to the crank handle.

[0017] In some embodiments, the coating assembly includes a support and a scraper.

[0018] The bracket is connected to the adjustment assembly, and along the first direction, the bracket is located between the extrusion assembly and the bearing platform;

[0019] The scraper is slidably disposed on the bracket along the second direction.

[0020] In some embodiments, the scraping assembly further includes a rotating shaft with both ends slidably disposed on the bracket, and the scraper is rotatably disposed on the rotating shaft along a third direction. The size of the scraper is greater than or equal to the size of the support platform, and the third direction is perpendicular to both the first direction and the second direction. The scraper includes a scraping surface, which is a smooth curved surface.

[0021] In some embodiments, the coating assembly further includes a telescopic rod, one end of which is connected to the adjustment assembly and the other end of which is connected to the bracket.

[0022] In some embodiments, the elution assembly includes a fixed pipe and a movable pipe, the fixed pipe being disposed on the base, the movable pipe being rotatably disposed on the fixed pipe, the movable pipe being in communication with the fixed pipe, and the outlet end of the movable pipe being used to deliver eluent to the support platform.

[0023] In some embodiments, a barrier is also included, which is disposed on the base and surrounds the outer periphery of the support platform, and the barrier has a water outlet.

[0024] The technical solutions provided by the embodiments of this application can include the following beneficial effects: In the film pressing machine of this application, the extrusion component reduces the thickness difference between the edge and center of the raw solution through vertical extrusion and rotational dispersion, combined with the shear thinning principle, thus initially improving the uniformity of the membrane. The coating component coats the raw solution horizontally, significantly improving the uniformity of the membrane. The elution component washes away the solvent in the raw solution, improving the purity of the membrane. The film pressing machine prepares a membrane with uniform thickness and no solvent residue by diffusion, coating, and elution of the raw solution, enabling accurate detection data in subsequent testing and analysis.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 This is a schematic diagram of a film pressing machine according to an exemplary embodiment.

[0028] Figure 2 This is a partial perspective view of a film pressing machine according to an exemplary embodiment.

[0029] Figure label:

[0030] 1. Base;

[0031] 2. Supporting platform;

[0032] 3. Extrusion assembly; 31. Support component; 32. Pressure plate; 33. Buffer layer; 34. Connecting shaft; 35. Handle;

[0033] 4. Coating assembly; 41. Bracket; 42. Scraper; 43. Shaft; 44. Sliding block; 45. Telescopic rod; 46. Limiting component;

[0034] 5. Washing and extracting unit; 51. Fixed piping; 52. Movable piping;

[0035] 6. Adjustment component; 61. Column; 62. First slider; 63. Second slider;

[0036] 7. Construction site fencing. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0038] In the process of preparing the stock solution into a membrane, the solvent needs to be removed for detection and analysis. Due to the poor fluidity of the stock solution, it is difficult to spread evenly when directly dropped, making it difficult to form a membrane of uniform thickness. Furthermore, solvent residue is easily left, affecting the accuracy of the detection. The stock solution is the material used to prepare the membrane. In some embodiments, the stock solution is a polyacrylonitrile stock solution, where the solvent is dimethyl sulfoxide, and the membrane is a polyacrylonitrile membrane.

[0039] This application provides a film pressing machine for preparing polyacrylonitrile (PA) stock solution into a PA membrane, comprising a base 1, a support platform 2, an extrusion assembly 3, a coating assembly 4, and an elution assembly 5. The stock solution is placed on the support platform 2. In one embodiment, the stock solution can be added manually to the support platform 2; in other embodiments, a delivery pipe can be used to place the stock solution on the support platform 2. The extrusion assembly 3 is used to diffuse the stock solution by extrusion, and the coating assembly 4 coats the diffused stock solution evenly to form a membrane. The elution assembly 5 is used to wash away the solvent from the membrane, thus completing the membrane removal process. The film pressing machine of this application enables the stock solution to undergo diffusion, coating, and elution processes, ultimately preparing a membrane with uniform thickness and no solvent residue for subsequent detection and analysis.

[0040] The base 1 is the basic support structure of the film pressing machine. The base 1 can be made of rigid material and is used to fix the bearing platform 2, extrusion assembly 3, coating assembly 4, and washing assembly 5. The bearing platform 2 can be fixed to the base 1 by welding or bolting. The extrusion assembly 3 can be fixed to the base 1 by an adjusting component 6, or it can be directly welded or bolted to the base 1. The coating assembly 4 is mounted on the base 1 and can share the adjusting component 6 with the extrusion assembly 3. The coating assembly 4 is fixed to the base 1 by the adjusting component 6, or it can be fixed to the base 1 by welding or bolting. The washing assembly 5 can be fixed to the base 1 by bolting or snap-fitting.

[0041] A baffle 7 or a groove can be provided on the base 1 to hold the eluent and prevent the eluent from splashing when the elution assembly 5 is eluting. At the same time, a drain port can be provided on the base 1 to drain the eluent.

[0042] A support platform 2 is mounted on the base 1. The support platform 2 holds the raw material, facilitating subsequent processing of the raw material on the support platform 2 to form a membrane. The support platform 2 can be a frame structure, with a flat surface on the top of the frame structure for holding the raw material. In one example, the support platform 2 can be as follows: Figure 1 The illustrated frustum or trapezoidal platform has a smooth-surfaced first plate-like object fixed to its top. The first plate-like object can be made of glass or acrylic, etc., to form a smooth surface and prevent the film from being too tightly bonded to the first plate-like object, thus hindering demolding. The first plate-like object can be square or circular.

[0043] The plate can be fixed to the frustum or trapezoidal platform by adhesive, or it can be detachably mounted on the frustum or trapezoidal platform by fasteners, making it easy to replace the plate. However, after installation, the height of the fasteners along the first direction cannot be higher than the height of the plate, wherein the first direction is perpendicular to the bearing platform 2.

[0044] In some possible embodiments, when the viscosity of the raw liquid is high, or when its flowability is poor at room temperature and it is difficult to spread evenly through the extrusion assembly 3, a heating device, such as a heating wire, can be provided on the support platform 2. The heating device can reduce the viscosity of the raw liquid and make it spread more smoothly.

[0045] In some other possible embodiments, when the viscosity of the stock solution is low, or when it is prone to excessive flow and uncontrolled diffusion at high ambient temperatures, a cooling device, such as a water-cooled pipe, can be installed. The cooling device can increase the viscosity of the stock solution, accelerate its initial solidification, and optimize the film-forming effect.

[0046] The extrusion assembly 3 is disposed on the base 1, and the extrusion assembly 3 can slide relative to the base 1 in a first direction. Figure 1 The middle is always located above the bearing platform 2, meaning the extrusion assembly 3 can be positioned above the bearing platform 2. Figure 1 The vertical direction shown in the figure is closer to or further away from the support platform 2. When squeezing the raw liquid, the position of the squeezing component 3 is adjusted so that it is close to the support platform 2, so that the squeezing component 3 contacts the raw liquid contained on the support platform 2 and applies squeezing force to the raw liquid; when squeezing the raw liquid is not required, the position of the squeezing component 3 is adjusted so that the squeezing component 3 is far away from the support platform 2, so that the squeezing component 3 is separated from the raw liquid, making room for other components to process the raw liquid or membrane.

[0047] The extrusion assembly 3 extrudes the raw liquid downwards along the first direction, causing the raw liquid to diffuse outwards. The extrusion assembly 3 can also rotate, with its rotation axis extending in the same direction as the first direction, meaning the extrusion assembly 3 can rotate around its rotation axis. During the extrusion process, the extrusion assembly 3 can rotate while extruding to further disperse the raw liquid and improve uniformity.

[0048] In some embodiments, in order to ensure that the formed film is uniform and flat, the side of the extrusion assembly 3 used for extruding the raw liquid is kept flat and has a smooth surface. The material of the extrusion assembly 3 is, for example, hard alloy or glass.

[0049] The part of the extrusion assembly 3 that extrudes the raw liquid can be a second plate-shaped object in the shape of a circle. The midpoint of the second plate-shaped object and the first plate-shaped object that carries the raw liquid are on the same vertical axis along the first direction, and the second plate-shaped object is located above the first plate-shaped object. The material of the second plate-shaped object can be smooth glass or acrylic, etc., to form a smooth surface. When extruding the raw liquid, it is avoided that the raw liquid and the second plate-shaped object are too tightly connected and it is not easy to diffuse and form a film.

[0050] The scraping component 4 is disposed on the base 1, as in some possible embodiments, such as Figure 1 As shown, along the first direction, the coating assembly 4 is located between the support platform 2 and the extrusion assembly 3; in some other possible embodiments, the extrusion assembly 3 may also be located between the support platform 2 and the coating assembly 4. Regardless of the positional relationship between the coating assembly 4 and the extrusion assembly 3, it is sufficient to ensure that the extrusion assembly 3 does not affect the operation of the coating assembly 4 when the coating assembly 4 is operating, and that the coating assembly 4 does not affect the operation of the extrusion assembly 3 when the extrusion assembly 3 is operating.

[0051] The scraping component 4 is used to scrape the original liquid after it has been extruded by the extrusion component 3. The scraping component 4 slides along the second direction to perform the scraping step, such as... Figure 1 As shown, the second direction is horizontal and perpendicular to the first direction. Depending on the spread of the original liquid, the coating component 4 can be repeatedly slid along the second direction until the original liquid forms a film of uniform thickness.

[0052] The scraping speed and pressure of the scraping component 4 can be adjusted according to the viscosity of the raw material. When the viscosity of the raw material is high, the scraping speed can be appropriately reduced and the scraping pressure increased to give the raw material sufficient time to respond to the thrust of the scraping component 4, so that the raw material is evenly spread and the thickness difference caused by flow lag can be reduced. When the viscosity of the raw material is low, the scraping speed can be appropriately increased and the scraping pressure reduced, so that the scraping component 4 makes slight contact with and guides the flow of the raw material, avoiding excessive disturbance that would cause the raw material to overflow from the support platform 2.

[0053] The scraping component 4 slides along the first direction to approach the raw liquid on the support platform 2 in the vertical direction to perform scraping operations on the raw liquid, or moves away from the raw liquid on the support platform 2 in the vertical direction to make way for the extrusion component 3 or the washing component 5, so as to facilitate the operation of the extrusion component 3 or the washing component 5.

[0054] The elution assembly 5 is mounted on the base 1, and its outlet end is rotatable relative to the base 1. When the outlet end of the elution assembly 5 is directly above the support platform 2, it delivers eluent to the support platform 2 to perform the elution process on the membrane. When the outlet end of the elution assembly 5 rotates to other positions, it makes way for the extrusion assembly 3 or the elution assembly 5, without affecting the processing of the raw material by the extrusion assembly 3 or the coating assembly 4.

[0055] The eluent supplied by the elution assembly 5 to the carrier platform 2 can remove the solvent from the membrane, thereby improving the purity of the membrane. In some embodiments, the stock solution is a polyacrylonitrile stock solution, the solvent is dimethyl sulfoxide, and the eluent is water. Polyacrylonitrile is insoluble in water, while dimethyl sulfoxide is soluble in water. Therefore, as the water passes through the polyacrylonitrile membrane, it washes away the dimethyl sulfoxide from the stock solution, resulting in a pure polyacrylonitrile membrane.

[0056] After the eluent washes the membrane, it becomes waste liquid. The waste liquid is temporarily stored in the groove or enclosure 7 of the base 1 and discharged from the drain port of the base 1.

[0057] In the film pressing machine of this application, the extrusion component 3, through vertical extrusion and rotational dispersion, combined with the shear thinning principle, reduces the thickness difference between the edge and center of the raw solution, thus initially improving the uniformity of the dispersed raw solution. The coating component 4 coats the raw solution horizontally, significantly improving the uniformity of the membrane. The elution component 5 washes away the solvent in the raw solution, improving the purity of the membrane. The film pressing machine enables the raw solution to undergo diffusion, coating, and elution processes to prepare a membrane with uniform thickness and no solvent residue, allowing for accurate detection data in subsequent testing and analysis.

[0058] In some embodiments, the laminating machine further includes an adjusting component 6, which is disposed on the base 1. The adjusting component 6 is used to mount the extrusion component 3 and the coating component 4 on the base 1. The adjusting component 6 drives the extrusion component 3 and the coating component 4 to slide along a first direction. The adjusting component 6 can drive the extrusion component 3 to slide alone, or it can drive the coating component 4 to slide alone, or it can drive the extrusion component 3 and the coating component 4 to slide simultaneously. Figure 1 As shown, the adjusting component 6 can precisely control the vertical lifting and lowering of the extrusion component 3 and the coating component 4, making it easy to control the vertical position of the extrusion component 3 and the coating component 4, so that the extrusion component 3 and the coating component 4 are close to or far away from the support platform 2.

[0059] In some possible embodiments, the adjustment component 6 can be configured as an integrated dual-slider structure, with each dual slider connected to the extrusion component 3 and the coating component 4. The sliding of the extrusion component 3 and the coating component 4 can be controlled by independent drive units, so as to realize the coordinated movement or independent operation of the extrusion component 3 and the coating component 4. The integrated dual-slider structure has high motion accuracy and a stable and compact structure.

[0060] In some other possible embodiments, two cylinders can be provided, which are respectively connected to the extrusion assembly 3 and the coating assembly 4. The sliding of the extrusion assembly 3 and the coating assembly 4 can be controlled by controlling the extension and retraction of the two cylinders. Using cylinders has the advantages of fast response and simple control.

[0061] In some embodiments, such as Figure 1 As shown, the adjustment assembly 6 includes a column 61, a first slider 62, and a second slider 63. The column 61 is disposed on the base 1, and the extending direction of the column 61 is the same as the first direction. Figure 1 As shown, the column 61 is set vertically, and the bottom of the column 61 is fixedly set to the base 1. The bottom of the column 61 can be welded to the base 1 or fixed to the base 1 by bolts.

[0062] The first slider 62 and the second slider 63 slide along the column 61 respectively. The first slider 62 is connected to the extrusion assembly 3. The connection method can be welding or bolt connection. The first slider 62 drives the extrusion assembly 3 to slide. The second slider 63 is connected to the scraping assembly 4. The connection method can be welding or bolt connection. The second slider 63 drives the scraping assembly 4 to slide.

[0063] The first slider 62, the second slider 63, and the column 61 are connected by a guide rail, which is rectangular or T-shaped. The guide rail is mounted on the column 61, and its extension direction is the same as that of the column 61. The first slider 62 and the second slider 63 are mounted on the guide rail via linear bearings or slider seats and slide along the guide rail. The guide rail, in conjunction with the linear bearings or slider seats, allows the first slider 62 and the second slider 63 to slide stably along the column 61.

[0064] Of course, two guide rails can also be arranged in parallel on the column 61, so that the first slider 62 is set on one guide rail and the second slider 63 is set on the other guide rail, forming two independent sliding paths. The setting of the double guide rails can improve the stability of the movement of the first slider 62 and the second slider 63 and reduce shaking.

[0065] Buffer pads are provided at both ends of the first slider 62 and the second slider 63 along the first direction to prevent the first slider 62 and the second slider 63 from hitting the column 61 when they slide to the top or bottom of the limit position, thus extending the service life of the equipment.

[0066] The arrangement of the column 61, the first slider 62, and the second slider 63 ensures that the sliding direction of the extrusion assembly 3 and the scraping assembly 4 will not deviate, so that the extrusion assembly 3 and the scraping assembly 4 are always located above the bearing platform 2, so as to facilitate the processing of the raw liquid.

[0067] In some embodiments, the extrusion assembly 3 includes a support member 31 and a pressure plate 32. The support member 31 is plate-shaped and is connected to the adjustment assembly 6 in the following manner: Figure 1 As shown, the support member 31 is connected to the adjusting assembly 6 via a connecting rod. The adjusting assembly 6 drives the connecting rod to slide in a first direction, and the connecting rod drives the support member 31 to slide in the first direction. A pressure plate 32 is disposed on the support member 31, and the pressure plate 32 is located on the side of the support member 31 closest to the bearing platform 2. The pressure plate 32 is used to squeeze the raw liquid on the bearing platform 2. The side of the pressure plate 32 in contact with the raw liquid is a smooth plane, facilitating the diffusion of the raw liquid.

[0068] The support platform 2 includes a support plane for placing the concentrate, and the pressure plate 32 is arranged parallel to the support plane. This ensures that the concentrate is squeezed evenly by the pressure plate 32, improving the consistency of concentrate diffusion.

[0069] The extrusion assembly 3 may also include a buffer layer 33, which is disposed between the support member 31 and the pressure plate 32. The buffer layer 33 can be attached to the support member 31 by adhesive, and the pressure plate 32 can also be attached to the buffer layer 33 by adhesive. The buffer layer 33 can be a rubber sheet. When the pressure plate 32 extrudes the raw liquid, the buffer layer 33 can absorb the instantaneous impact force through its own elastic deformation, avoiding raw liquid splashing or damage to the bearing platform 2 caused by rigid extrusion. At the same time, the buffer layer 33 can fill the small assembly errors between the support member 31 and the pressure plate 32, ensuring the parallelism between the pressure plate 32 and the bearing plane, and further improving the extrusion uniformity. In addition, the rubber material of the buffer layer 33 has a certain friction, which can enhance the connection stability between the support member 31 and the pressure plate 32 and prevent the pressure plate 32 from sliding relative to the support member 31 during the extrusion process.

[0070] In some embodiments, the extrusion assembly 3 further includes a connecting shaft 34 and a crank 35. The extending direction of the connecting shaft 34 is the same as the first direction. The connecting shaft 34 passes through the support member 31 and is rotatably mounted on the support member 31 via a bearing. Figure 1 As shown, the bottom end of the connecting shaft 34 is close to the bearing platform 2, and the bottom end of the connecting shaft 34 is connected to the pressure plate 32 by welding or bolt connection. The top end of the connecting shaft 34 is connected to the crank handle 35 by welding or bolt connection.

[0071] By turning the crank handle 35, the connecting shaft 34 and the support member 31 are rotated, causing the pressure plate 32 to rotate around the first direction axis, so that the pressure plate 32 rotates horizontally while squeezing the raw liquid. Under the action of the rotating pressure plate 32, the raw liquid further diffuses to the edge, and the edge thickness is less than the center thickness, forming a more uniform preliminary film.

[0072] Of course, in actual use, the crank handle 35 can be replaced with a motor, which drives the connecting shaft 34 to rotate. Setting up a motor can save manpower and improve efficiency.

[0073] In some embodiments, such as Figure 2 As shown, the coating assembly 4 includes a bracket 41 and a scraper 42. The bracket 41 is connected to the adjustment assembly 6, and as shown... Figure 1 As shown, along the first direction, the support 41 is located between the extrusion assembly 3 and the support platform 2 to prevent interference between the vertical movements of the coating assembly 4 and the extrusion assembly 3. The scraper 42 is slidably disposed on the support 41 along the second direction, which is perpendicular to the first direction.

[0074] The adjusting component 6 drives the support 41 to descend along the first direction, bringing the bottom of the scraper 42 into contact with the surface of the raw liquid on the support platform 2. The scraping force between the scraper 42 and the raw liquid can be controlled by adjusting the height of the support 41. Lowering the height of the support 41 to bring it closer to the support platform 2 increases the scraping force, while raising the height of the support 41 to move it slightly away from the support platform 2 decreases the scraping force. The scraper 42 slides along the second direction, shaping the squeezed raw liquid into a film of uniform thickness through the scraping action. Depending on the state of the raw liquid, unidirectional scraping or reciprocating scraping can be performed multiple times until the film thickness meets the requirements. After scraping is completed, the adjusting component 6 drives the support 41 to rise along the first direction, moving the scraper 42 away from the support platform 2 to make way for the operation of the elution component 5.

[0075] In some embodiments, such as Figure 2 As shown, the scraping assembly 4 also includes a rotating shaft 43. The two ends of the rotating shaft 43 are slidably mounted on the bracket 41 via sliding blocks 44. The two ends of the rotating shaft 43 are integrally formed with the sliding blocks 44 to connect them. Sliding grooves are provided inside the opposite sides of the bracket 41. The sliding blocks 44 are slidably mounted in the sliding grooves, and the sliding blocks 44 drive the rotating shaft 43 to slide.

[0076] The scraper 42 is rotatably mounted on the rotating shaft 43. Under the premise that the positions of the bracket 41 and the rotating shaft 43 along the first direction remain unchanged, the scraping part of the scraper 42 moves closer to or further away from the bearing platform to increase or decrease the scraping force.

[0077] Along the third direction, the size of the scraper 42 is not less than the size of the supporting platform 2. The third direction is perpendicular to both the first and second directions. This prevents the concentrate from accumulating at the edges during the scraping process, reduces edge thickening, and prevents the concentrate from overflowing from the sides.

[0078] The scraper 42 includes a scraping surface, which is a smooth curved surface. A smooth curved surface can be, for example, an arc surface or a parabolic surface. This avoids scratches or ripples on the film surface caused by the sharp edges of the flat scraper 42, improving surface smoothness. Furthermore, the smooth curved surface allows the scraper 42 to make gentler contact with the original solution, preventing damage to the internal structure of the original solution.

[0079] The coating assembly 4 also includes a telescopic rod 45, one end of which is connected to the adjusting assembly 6, and the other end of which is connected to the bracket 41. The telescopic rod 45 facilitates the adjustment of the horizontal position of the coating assembly 4, making it easier for the coating assembly 4 to coat the raw liquid or for the coating assembly 4 to make way for other components, thus facilitating the processing of the raw liquid.

[0080] like Figure 1 As shown, in actual use, a limiting member 46 can be set at the bottom of the bracket 41. The limiting member 46 is similar to a protrusion. The setting of the limiting member 46 can limit the sliding position of the bracket 41 when the bracket 41 slides down, so as to avoid the bracket 41 from colliding with the bearing platform 2.

[0081] In some embodiments, the elution assembly 5 includes a fixed pipe 51 and a movable pipe 52. The fixed pipe 51 is disposed on the base 1. One end of the fixed pipe 51 is connected to the eluent source. The other end of the fixed pipe 51 is rotatably connected to one end of the movable pipe 52, and the movable pipe 52 is connected to the fixed pipe 51. The other end of the movable pipe 52 is the outlet end, and the outlet end of the movable pipe 52 delivers the eluent to the support platform 2.

[0082] When installing the fixed pipe 51 and the movable pipe 52, in some possible embodiments, such as Figure 1 As shown, the movable pipe 52 can also be rotatably mounted on the base 1, and the fixed pipe 51 can be fixed to the movable pipe 52, with the outlet end located at the end of the fixed pipe 51 for conveying eluent to the carrier platform 2. The eluent flows along the movable pipe 52 and the fixed pipe 51 and exits from the outlet end of the fixed pipe 51, rinsing the membrane on the carrier platform 2. When elution is not required, the movable pipe 52 can be rotated, causing the fixed pipe 51 to rotate about the axis of the movable pipe 52 to a position away from the carrier platform 2, making way for other components.

[0083] In some embodiments, the film pressing machine further includes a baffle 7, which is disposed on the base 1 and surrounds the outer periphery of the support platform 2. The baffle 7 has a water outlet. When the elution assembly 5 delivers eluent to the support platform 2, the liquid diffuses from the center to the edge. Waste liquid carrying solvent overflows along the edge of the support platform 2, is blocked by the baffle 7, and flows down the inner wall, preventing the eluent from splashing onto the base 1 or the outside of the equipment. The waste liquid inside the baffle 7 is discharged through the water outlet, enabling directional discharge of the waste liquid.

[0084] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0085] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A film pressing machine, characterized in that, Used to prepare the stock solution into a membrane, including: Base; A support platform is disposed on the base, and the support platform is used to hold the raw liquid; An extrusion assembly is slidably disposed on the base along a first direction. The extrusion assembly is used to extrude the raw liquid along the first direction, causing the raw liquid to diffuse outward on the support platform. The first direction is perpendicular to the support platform. A coating assembly is slidably disposed on the base along the first direction. The coating assembly coats the diffused original liquid along the second direction to form a film of uniform thickness, wherein the second direction is perpendicular to the first direction. An elution assembly is movably mounted on the base, with its outlet end rotatably mounted relative to the base. The elution assembly is used to deliver eluent to the support platform, and the eluent washes the membrane to remove the solvent from the membrane.

2. The film pressing machine according to claim 1, characterized in that, It also includes an adjustment component, which is disposed on the base. The extrusion component and the coating component are respectively disposed on the adjustment component. The adjustment component is used to drive the extrusion component and the coating component to slide along the first direction.

3. The film pressing machine according to claim 2, characterized in that, The adjustment assembly includes a column, a first slider, and a second slider; The column is disposed on the base, and the extension direction of the column is the same as the first direction; The first slider is slidably disposed on the column along the first direction, and the extrusion assembly is connected to the first slider; The second slider is slidably disposed on the column along the first direction, and the scraping assembly is connected to the second slider. Along the first direction, the scraping assembly is located between the extrusion assembly and the support platform.

4. The film pressing machine according to claim 2, characterized in that, The extrusion assembly includes a support member and a pressure plate. The support member is connected to the adjustment assembly. The pressure plate is rotatably disposed on the side of the support member near the bearing platform. The bearing platform includes a bearing plane, and the pressure plate is disposed parallel to the bearing plane.

5. The film pressing machine according to claim 4, characterized in that, The extrusion assembly further includes a connecting shaft and a crank handle. The connecting shaft extends in the same direction as the first direction. The connecting shaft is rotatably mounted on the support member. One end of the connecting shaft near the bearing platform is connected to the pressure plate, and the other end of the connecting shaft is connected to the crank handle.

6. The film pressing machine according to claim 2, characterized in that, The coating assembly includes a support and a scraper. The bracket is connected to the adjustment assembly, and along the first direction, the bracket is located between the extrusion assembly and the bearing platform; The scraper is slidably disposed on the bracket along the second direction.

7. The film pressing machine according to claim 6, characterized in that, The coating assembly also includes a rotating shaft with both ends slidably mounted on the bracket. The scraper is rotatably mounted on the rotating shaft along a third direction. The size of the scraper is greater than or equal to the size of the support platform. The third direction is perpendicular to both the first and second directions. The scraper includes a coating surface, which is a smooth curved surface.

8. The film pressing machine according to claim 6, characterized in that, The coating assembly also includes a telescopic rod, one end of which is connected to the adjustment assembly, and the other end of which is connected to the bracket.

9. The film pressing machine according to claim 1, characterized in that, The elution assembly includes a fixed pipe and a movable pipe. The fixed pipe is disposed on the base, and the movable pipe is rotatably disposed on the fixed pipe. The movable pipe is connected to the fixed pipe, and the outlet end of the movable pipe is used to deliver the eluent to the support platform.

10. The film pressing machine according to claim 1, characterized in that, It also includes a fence, which is set on the base and surrounds the outer perimeter of the support platform, and the fence has a water outlet.

Images