An adjustable double doctor liquid trough

Abstract

The application provides an adjustable double-scratching liquid tank, which comprises a double-scratching liquid tank body, a scraper assembly and a baffle adjusting mechanism; the double-scratching liquid tank body comprises side plates, a bottom plate and the scraper assembly, the scraper assembly has three scrapers, the two side edges of the scrapers are respectively inserted into grooves in the two side plates and are in sliding connection with the side plates, the scraper assembly divides the liquid tank into a first liquid tank and a second liquid tank; the baffle adjusting mechanism comprises a baffle, the baffle slides in the liquid tank and divides the liquid tank to form an isolated chamber. The application adopts a parallel double-liquid tank structure design, which can be used alone or simultaneously used for double-scratching experiments, the film is first subjected to the first liquid tank and then subjected to the second liquid tank, the width of the film can be adjusted by the baffle adjusting mechanism, and the separated liquid can be blocked, a same liquid tank can be used to place multiple solutions, two solutions can be matched, multiple groups of liquid can be subjected to double-scratching experiments at a time, a formula can be quickly screened, and continuous double-scratching integrated molding is achieved.

Description

Technical Field

[0001] This application relates to the field of flat sheet membrane preparation technology, and in particular to an adjustable dual scraper tank. Background Technology

[0002] In the field of biopharmaceutical separation and purification, flat sheet membranes, as key filtration consumables, have seen significant advancements in their performance optimization through stepped filtration. In recent years, bilayer and multilayer composite flat sheet membrane technologies have developed rapidly. Composite membrane structures prepared by gradient coating of two or more membrane-forming materials can simultaneously achieve breakthroughs in both high rejection rates and high throughput.

[0003] In the production process of composite flat sheet films, the feed tank serves as the core control unit for film formation quality, and its structural design directly affects the uniformity of film thickness and the interfacial bonding strength. Existing feed tanks are generally single-unit fixed feed tanks, with a typical single-piece design. Their main function is to contain and distribute the film-forming solution, and to uniformly coat the solution onto the substrate using fixed components such as doctor blades, thereby controlling the film formation quality.

[0004] However, the monomer-type fixed feed tank has significant technical limitations. First, it cannot achieve continuous operation of gradient film deposition processes, leading to stress defects at the interlayer bonding interface. Second, the response to process parameter adjustments is sluggish, and changing the feed solution requires shutdown and cleaning, resulting in production capacity loss. Furthermore, it suffers from low efficiency in formula screening during the experimental stage; a single coating can only verify a single feed solution combination, severely impacting the development cycle of new membrane materials. Utility Model Content

[0005] This application addresses the problems of existing traditional single-type fixed material tanks being unable to achieve continuous operation of gradient film formation processes, having a lag in the response to process parameter adjustments, and being able to verify only a single material combination in a single coating. It provides an adjustable dual-scraper material tank, including: a dual-scraper material tank body, a scraper assembly, and a baffle adjustment mechanism.

[0006] The dual scraper trough body includes a side plate, a bottom plate, and a scraper assembly. There are two side plates, which are arranged opposite each other at both ends of the bottom plate. Three longitudinally extending grooves are symmetrically arranged on the inner side of the side plates.

[0007] The scraper assembly includes: a first scraper, a second scraper, and a third scraper;

[0008] The two sides of the scraper assembly are respectively inserted into the grooves of the two side plates and are slidably connected to the side plates along the grooves. A first material tank is formed between the first scraper and the second scraper, and a second material tank is formed between the second scraper and the third scraper.

[0009] The baffle adjustment mechanism includes a baffle, which is arranged side by side with the side plate and slides in the first liquid tank or the second liquid tank to divide the space of the first liquid tank or the second liquid tank to form an isolation chamber.

[0010] In one feasible implementation, thickness adjustment mechanisms are symmetrically arranged on both sides of the scraper assembly near the side plate, and the thickness adjustment mechanisms are used to adjust the lifting height of the scraper assembly.

[0011] In one feasible implementation, the thickness adjustment mechanism includes: a digital micrometer, a stainless steel connector, and an adjusting screw;

[0012] The digital micrometer is fixed to the scraper assembly on the side near the side plate by bolts;

[0013] The end of the adjusting screw abuts against the bottom of the groove in the side plate. Rotating the adjusting screw can change the distance between the scraper assembly and the bottom of the groove to adjust the lifting height of the scraper assembly.

[0014] In one feasible implementation, the baffle adjustment mechanism further includes: a cover plate and an internal hexagon screw;

[0015] The cover plate covers the top of the first and second liquid tanks, and the baffle is disposed in the liquid tank and is fixed perpendicularly to the cover plate;

[0016] The cover plate is provided with a sliding groove, and the baffle is provided with a threaded hole at the middle of one end near the cover plate. The hexagonal socket screw passes through the sliding groove and is screwed into the threaded hole of the baffle to adjust the lateral position of the baffle in the first or second liquid tank along the sliding groove.

[0017] In one feasible implementation, the cover plate is also provided with a feed inlet;

[0018] The feed inlet is located on the edge of the cover plate away from the side plate, and the cover plate corresponding to the first or second liquid tank is provided with at least two feed inlets distributed at equal intervals.

[0019] In one feasible implementation, there are two sets of baffle adjustment mechanisms, which are respectively disposed on the first liquid tank or the second liquid tank;

[0020] The number of baffles is 1-3. Adjacent baffles and the baffles and the side plate form the isolation chamber. Different liquids are injected into the isolation chambers through the feed inlet.

[0021] In one feasible implementation, the sliding groove is a T-shaped groove arranged along the length of the cover plate, and the head of the internal hexagon screw is embedded in the T-shaped groove and slides along the sliding groove.

[0022] In one feasible implementation, both the side plate and the baffle are trapezoidal;

[0023] The baffle is a corrosion-resistant plastic sheet, and the base plate is a detachable polytetrafluoroethylene sheet;

[0024] The gap between the bottom of the baffle and the base plate is 0.5-2mm, and the base plate is also provided with a guide groove parallel to the scraper assembly.

[0025] In one feasible implementation, the top of the side plate is provided with a positioning boss, and the edge of the cover plate is provided with a groove that engages with the positioning boss. The cover plate covers the first liquid tank or the second liquid tank by means of a snap-fit.

[0026] In one feasible implementation, the outer side of the side plate is provided with a scale, which corresponds to the position of the sliding groove, so as to quantitatively adjust the lateral displacement of the baffle.

[0027] The adjustable dual scraper liquid tank provided in this application adopts a parallel dual liquid tank structure design. It can be used alone or both tanks can be used simultaneously for dual scraping experiments. The scraper first passes through the first liquid tank and then through the second liquid tank. The width of the scraper and the blocking and separation of the liquid can be adjusted by the baffle adjustment mechanism. Multiple solutions can be placed in the same liquid tank for pairing and multiple sets of liquids can be used for dual scraping experiments at one time, which can quickly screen the formula and continuously perform dual scraping integral molding. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0029] Figure 1 This is a schematic diagram of an adjustable double scraper trough structure shown in an exemplary embodiment of this application;

[0030] Figure 2 yes Figure 1 Top view.

[0031] Attached image annotations:

[0032] 100 - Double scraper trough; 200 - Baffle adjustment mechanism; 110 - Side plate; 120 - First scraper; 130 - Second scraper; 140 - Third scraper; 150 - Thickness adjustment device; 210 - Cover plate; 211 - Sliding groove; 212 - Feed inlet; 220 - Baffle; 221 - Baffle A; 222 - Baffle B; 223 - Baffle C; 230 - Hex socket head cap screw. Detailed Implementation

[0033] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of the implementation of embodiments of the present invention.

[0034] Existing feed tanks are generally single-unit fixed feed tanks, typically with a monolithic design. Their main function is to contain and distribute the film-forming solution, using fixed components such as doctor blades to evenly coat the solution onto the substrate to control film quality. However, single-unit fixed feed tanks have significant technical limitations. First, they cannot achieve continuous operation of gradient film formation processes, leading to stress defects at the interlayer bonding interface. Second, process parameter adjustments are slow to respond, and changing the feed solution requires shutdown for cleaning, resulting in lost production capacity. Furthermore, they suffer from low efficiency in formula screening during the experimental stage, as a single coating can only verify a single feed solution combination, severely impacting the development cycle of new membrane materials.

[0035] To address the aforementioned problems, embodiments of this application provide an adjustable dual scraper trough, as shown below. Figure 1 As shown, it includes: a dual scraper trough body 100 and a baffle adjustment mechanism 200. The dual scraper trough body 100 is composed of side plates 110, a bottom plate, and a scraper assembly. There are two side plates 110, which are arranged opposite each other at both ends of the bottom plate, and three longitudinally extending grooves are symmetrically arranged on their inner sides.

[0036] The scraper assembly includes a first scraper 120, a second scraper 130, and a third scraper 140. The two sides of these scrapers are respectively inserted into grooves in the side plates 110 and slidably connected to the side plates 110 along the grooves. A first liquid trough is formed between the first scraper 120 and the second scraper 130, and a second liquid trough is formed between the second scraper 130 and the third scraper 140. The baffle adjustment mechanism 200 includes a baffle 220, which is arranged side-by-side with the side plates 110 and can slide within either the first or second liquid trough to divide the liquid trough space and form an isolation chamber.

[0037] The side plate 110 serves as a support structure for the liquid tank, providing a mounting base for the scraper assembly and the baffle adjustment mechanism 200. The bottom plate, as the bottom of the liquid tank, holds the liquid. The scraper assembly forms two independent liquid tanks through the arrangement of the scrapers, allowing for simultaneous or separate scraping experiments with different liquids. The baffle 220 forms an isolation chamber within the liquid tank, enabling zoned control of different liquids.

[0038] When it is necessary to adjust the partitioning of the liquid tank, the size and position of the isolation chamber can be changed by sliding the baffle 220 within the liquid tank, thereby achieving precise control over different liquids. The scraper assembly slides along the groove of the side plate 110, which can adjust the spacing between the scrapers, thereby changing the capacity of the liquid tank and the coating thickness.

[0039] In this embodiment, the dual-scraper liquid tank body 100, through its dual-liquid tank design, enables the simultaneous processing of two different liquids. The side plate 110, serving as a support structure, not only provides the mounting base for the scraper assembly but also ensures stable sliding of the scraper assembly through its inner groove design. The scraper assembly, with its three scrapers arranged, forms two independent liquid tanks, providing the conditions for simultaneous processing of two liquids. The baffle adjustment mechanism 200 further enhances the flexibility of the equipment; by sliding the baffle 220 within the liquid tank, the size and position of the isolation chamber can be flexibly adjusted to meet different experimental needs.

[0040] This embodiment solves the problem that traditional single-unit fixed feed tanks cannot achieve continuous operation of gradient film deposition processes. By using a dual feed tank design, two different feed solutions can be processed simultaneously, enabling continuous operation of the gradient film deposition process and improving production efficiency. Simultaneously, it also solves the problem of lag in process parameter adjustment response, as the feed ratio and distribution within the feed tank can be adjusted in real time, thus quickly responding to changes in process parameters. Furthermore, this embodiment improves the efficiency of formulation screening during the experimental stage, as multiple formulations can be tested simultaneously, shortening the development cycle of novel membrane materials.

[0041] In some embodiments of this application, thickness adjustment mechanisms 150 are symmetrically arranged on both sides of the scraper assembly near the side plate 110. These thickness adjustment mechanisms 150 are used to adjust the lifting height of the scraper assembly, thereby controlling the thickness of the scraped film. When it is necessary to adjust the coating thickness, the scraper assembly is slid up and down along the groove of the side plate 110 by operating the thickness adjustment mechanism 150, thereby changing the distance between the scraper and the base plate and achieving adjustment of the coating thickness.

[0042] In this embodiment, the thickness adjustment mechanism 150 makes the adjustment of the film thickness more precise and convenient, solving the problem of inaccurate film thickness adjustment in traditional feed tanks. Precise adjustment by the thickness adjustment mechanism 150 ensures the uniformity and consistency of the film thickness, improving the quality of the flat sheet film. Simultaneously, this design also improves the accuracy and repeatability of experiments, providing more reliable data support for scientific research.

[0043] In some embodiments of this application, the thickness adjustment mechanism 150 includes a digital micrometer, a stainless steel connector, and an adjusting screw. The digital micrometer is bolted to the side of the scraper assembly near the side plate 110, and its measuring head contacts the bottom of the groove in the side plate 110. It is used to measure the lifting height of the scraper assembly and can provide a precise adjustment reference.

[0044] The stainless steel connector connects the digital dial indicator and the scraper assembly, serving to fix and support them. The end of the adjusting screw abuts against the bottom of the groove in the side plate 110, and its threaded part mates with the internal threaded hole on the scraper assembly. By rotating the adjusting screw, the distance between the scraper assembly and the bottom of the groove can be changed.

[0045] When adjusting the lifting height of the scraper assembly, first read the current scraping film thickness value using a digital dial indicator. Then, according to experimental requirements, rotate the adjusting screw to change the distance between the scraper assembly and the bottom of the groove. Because the adjusting screw engages with the internal threaded hole on the scraper assembly, rotating the adjusting screw allows for minute displacement of the scraper assembly. Simultaneously, the digital dial indicator displays the change in scraping film thickness in real time, ensuring the accuracy of the adjustment.

[0046] In this embodiment, the thickness adjustment mechanism 150 operates based on mechanical transmission and precision measurement. By adjusting the rotation of the screw, a minute displacement of the scraper assembly is achieved, thereby changing the film thickness. A digital dial indicator provides a precise measurement method, ensuring the accuracy of the adjustment and solving the problem of inaccurate thickness adjustment in traditional scraper troughs.

[0047] Furthermore, the precise adjustment of the thickness adjustment mechanism 150 ensures the uniformity and consistency of the film thickness, improving the quality of the flat sheet film. Simultaneously, the use of a digital dial indicator makes the adjustment process more intuitive and convenient, increasing experimental efficiency.

[0048] In some embodiments of this application, the baffle adjustment mechanism 200 includes a cover plate 210, a baffle 220, and an internal hexagon screw 230. The cover plate 210 covers the top of the first and second liquid tanks and has a sliding groove 211 thereon. The baffle 220 is disposed in the liquid tank and is fixed vertically to the cover plate 210. The baffle 220 has a threaded hole at the middle of one end near the cover plate 210. The internal hexagon screw 230 passes through the sliding groove 211 and is screwed into the threaded hole of the baffle 220 to adjust the lateral position of the baffle 220 in the liquid tank along the sliding groove 211.

[0049] In this embodiment, the cover plate 210 serves as the supporting structure for the baffle adjustment mechanism 200, covering not only the top of the liquid tank but also providing the mounting base for the baffle 220. The design of the sliding groove 211 allows the baffle 220 to slide laterally within the liquid tank, thereby adjusting the size and position of the isolation chamber. The baffle 220's vertical fixation to the cover plate 210 ensures the stability of the isolation chamber. The hexagon socket screw 230 serves as an adjustment element; by rotating the screw, the lateral position of the baffle 220 within the liquid tank can be changed.

[0050] When the lateral position of the baffle 220 needs to be adjusted, loosen the hex socket screw 230, move the baffle 220 to the desired position along the sliding groove 211, and then tighten the hex socket screw 230 to fix the baffle 220. By adjusting the position of the baffle 220, the size and position of the isolation chamber can be changed, thereby achieving precise control over different liquids.

[0051] Traditional feed tanks cannot flexibly adjust the scraping width and isolate the feed liquid. However, this embodiment, through the introduction of a baffle adjustment mechanism 200, allows for convenient adjustment of the size and position of the isolation chamber, thereby meeting different experimental needs. At the same time, this design also improves the flexibility and practicality of the experiment, providing a more convenient operating method for scientific research experiments.

[0052] In some embodiments of this application, the cover plate 210 is also provided with a feed inlet 212, which is located on the edge of the cover plate 210 away from the side plate 110. The cover plate 210 corresponding to the first liquid tank or the second liquid tank is provided with at least two equally spaced feed inlets.

[0053] The inlet 212 allows for convenient injection of the liquid into the liquid tank. The presence of at least two equally spaced inlets ensures uniform distribution of the liquid within the tank. Furthermore, the inlet 212 is positioned away from the side plate 110, preventing impact and corrosion of the side plate 110 during injection.

[0054] This embodiment, through the proper setting of the feed inlet 212, ensures uniform distribution of the liquid within the feed tank, thereby improving the quality of the film coating. Simultaneously, the location of the feed inlet 212 avoids impact and corrosion of the side plate 110 by the liquid, extending the service life of the equipment.

[0055] In some embodiments of this application, there are two sets of baffle adjustment mechanisms 200, which are respectively installed on the first liquid tank or the second liquid tank. The number of baffles 220 is 1-3, and adjacent baffles 220 and the baffles 220 and the side plate 110 form an isolation chamber. Different liquids are injected into the isolation chamber through the feed inlet 212.

[0056] The two sets of baffle adjustment mechanisms 200 allow for independent baffle adjustment of both the first and second liquid tanks. The number of baffles 220 is 1-3, which can be flexibly adjusted according to experimental needs. The isolation chambers formed between adjacent baffles 220 and the side plate 110 facilitate the blocking and separation of different liquids. Simultaneously, different liquids can be injected through the inlet 212 to meet the experimental requirements of various formulations.

[0057] During use, by adjusting the number and position of the baffles 220 in each set of baffle adjustment mechanisms 200, different numbers and sizes of isolation chambers can be formed in the first and second liquid tanks. Different liquids are injected into different chambers through the inlet 212, enabling simultaneous scraping experiments with multiple sets of liquids.

[0058] This embodiment solves the problem that traditional liquid tanks cannot simultaneously process multiple different liquids. Through the arrangement of two sets of baffle adjustment mechanisms 200 and multiple baffles 220, the isolation and separation of different liquids can be easily achieved, meeting the experimental needs of various formulations. It is applicable to a wide range of liquids with different properties and viscosities, demonstrating broad applicability.

[0059] In some embodiments of this application, the sliding groove 211 is a T-shaped groove provided along the length of the cover plate 210, and the head of the hexagon socket screw 230 is embedded in the T-shaped groove and slides along the sliding groove 211.

[0060] Understandably, the T-slot design of the sliding groove 211 allows the head of the hexagon socket screw 230 to be stably embedded within the sliding groove 211, preventing the screw from falling out or shifting during sliding. Simultaneously, the guiding effect of the T-slot ensures the stable sliding of the hexagon socket screw 230 along the sliding groove 211, improving the accuracy of the baffle 220 adjustment.

[0061] In some embodiments of this application, both the side plate 110 and the baffle 220 are trapezoidal, the baffle 220 is a corrosion-resistant plastic plate, and the bottom plate is a detachable polytetrafluoroethylene plate. The gap between the bottom of the baffle 220 and the bottom plate is 0.5-2mm, and the bottom plate is also provided with a guide groove parallel to the scraper assembly.

[0062] During the coating process, the coating liquid flows along the guide channel and forms a uniform film through the scraping action of the scraper assembly. The trapezoidal side plate 110 and baffle 220 provide stable support and guidance, ensuring the smooth progress of the coating process. The design of the corrosion-resistant plastic baffle 220 and the removable PTFE base plate extends the service life of the equipment and facilitates cleaning and maintenance.

[0063] In this embodiment, the trapezoidal side plate 110 and baffle 220 design facilitate smoother flow of the liquid within the liquid tank, preventing accumulation and residue. The corrosion-resistant plastic baffle 220 ensures its stability and durability when in contact with corrosive liquids. The removable PTFE base plate facilitates cleaning and maintenance. The gap between the bottom of the baffle 220 and the base plate ensures stable flow of the liquid within the isolation chamber, preventing leakage and mixing. The guide grooves on the base plate further optimize the liquid flow path and improve the quality of the scraping process.

[0064] This embodiment solves the problems of poor liquid flow, easy accumulation of residue, and difficult cleaning and maintenance of traditional liquid tanks. Through the design of the trapezoidal side plate 110 and baffle 220, the corrosion-resistant plastic baffle 220, the detachable PTFE base plate, and the gap design between the bottom of the baffle 220 and the base plate, stable liquid flow within the liquid tank and easy cleaning and maintenance of the equipment are ensured. At the same time, the guide groove design on the base plate also improves the quality of the scraping film.

[0065] In some embodiments of this application, the top of the side plate 110 is provided with a positioning boss, and the edge of the cover plate 210 is provided with a groove that engages with the positioning boss. The cover plate 210 covers the first or second liquid tank by engaging. The positioning boss and the groove ensure that the cover plate 210 can stably cover the liquid tank, preventing the cover plate 210 from falling off or shifting during the experiment.

[0066] When installing the cover plate 210, align the groove on the edge of the cover plate 210 with the positioning boss on the top of the side plate 110 and snap it in place to achieve quick installation of the cover plate 210. For disassembly, simply lift the cover plate 210 gently to separate it from the side plate 110. The snap-fit ​​design simplifies the installation process and improves experimental efficiency.

[0067] This embodiment achieves rapid installation and removal of the cover plate 210 through a snap-fit ​​method using positioning bosses and grooves. The principle lies in utilizing the quick-connect characteristics of the snap-fit ​​mechanism to improve the ease of operation of the equipment. At the same time, this design also simplifies the structure of the equipment and reduces manufacturing costs.

[0068] In some embodiments of this application, the outer side of the side plate 110 is provided with a scale, which corresponds to the position of the sliding groove 211, so as to quantitatively adjust the lateral displacement of the baffle 220.

[0069] In this embodiment, when adjusting the lateral position of the baffle 220, the movement distance of the baffle 220 can be precisely controlled by observing the scale markings on the outer side of the side plate 110. The sliding groove 211 corresponds to the scale markings, facilitating real-time observation and recording of the positional changes of the baffle 220 during adjustment. Through the combined use of the scale markings and the sliding groove 211, quantitative adjustment of the lateral displacement of the baffle 220 is achieved.

[0070] As can be seen from the above embodiments, the adjustable dual-scraping liquid tank of this application can be used alone or both tanks can be used simultaneously for dual-scraping experiments. When using a single liquid tank, unused scrapers can be raised or removed. When using a dual liquid tank, first insert the scraper into the inner groove of the side plate, then fix the scraper, digital dial indicator, and side plate using stainless steel connectors. Adjust the position of the adjusting screws to adjust the height of the scraper (scraping film thickness). The number and position of baffles can be placed according to experimental needs.

[0071] Specifically, such as Figure 2 As shown in the figure, baffle A is labeled 221, baffle B is labeled 222, and baffle C is labeled 223. One baffle A is placed in the first feed tank, and two baffles B and C are placed in the second feed tank. Screws pass through the cover plate and are embedded in the baffles. The position of the baffles within the feed tank is adjusted by sliding them left and right in the sliding groove. The baffle adjustment mechanism adjusts the width of the scraping film and the blocking and separation of the feed liquid. Liquid A and liquid B are added to the first liquid tank through the feed inlet, and liquid C, liquid D, and liquid E are added to the second liquid tank. The machine is started to scrape the film. The substrate film first passes through the first liquid tank (lower layer of the film) and then through the second liquid tank (upper layer of the film), and enters the coagulation bath to solidify. The film is continuously scraped and formed in one piece to obtain film 1, with the lower layer formed by liquid A and the upper layer formed by liquid C; film 2, with the lower layer formed by liquid A and the upper layer formed by liquid D; film 3, with the lower layer formed by liquid B and the upper layer formed by liquid D; and film 4, with the lower layer formed by liquid B and the upper layer formed by liquid E.

[0072] The adjustable dual-scraping liquid tank provided in this application enables the simultaneous processing of multiple different liquids through its dual-scraping design. This allows for simultaneous scraping experiments with multiple sets of different liquids, significantly shortening the experimental cycle and improving experimental efficiency and formulation screening speed. Secondly, the introduction of thickness adjustment and baffle adjustment mechanisms allows for flexible adjustment of the scraper spacing, number and position of baffles according to experimental needs, adapting to different experimental conditions. This enables precise adjustment of the scraping film thickness and the size of the isolation chamber, improving experimental accuracy and repeatability. Furthermore, the use of snap-fit ​​methods, sliding grooves, and screws simplifies the installation and adjustment process, improving experimental efficiency. Finally, a reasonable structural design and material selection ensure the stability and durability of the equipment, reducing manufacturing and maintenance costs.

[0073] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the disclosure in the specification and the embodiments. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

Claims

1. An adjustable double scraper trough, characterized in that, include: The dual scraper tank body (100), scraper assembly, and baffle adjustment mechanism (200) are included. The dual scraper liquid tank body (100) includes a side plate (110), a bottom plate and a scraper assembly. There are two side plates (110) and they are arranged opposite to each other at both ends of the bottom plate. Three longitudinally extending grooves are symmetrically arranged on the inner side of the side plate (110). The scraper assembly includes: a first scraper (120), a second scraper (130) and a third scraper (140). The two sides of the scraper assembly are respectively inserted into the grooves of the two side plates (110) and are slidably connected to the side plates (110) along the grooves. A first material tank is formed between the first scraper (120) and the second scraper (130), and a second material tank is formed between the second scraper (130) and the third scraper (140). The baffle adjustment mechanism (200) includes a baffle (220), which is arranged side by side with the side plate (110) and slides in the first liquid tank or the second liquid tank to divide the space of the first liquid tank or the second liquid tank to form an isolation chamber.

2. The adjustable double scraper trough according to claim 1, characterized in that, Thickness adjustment mechanisms (150) are symmetrically arranged on both sides of the scraper assembly near the side plate (110), and the thickness adjustment mechanisms (150) are used to adjust the lifting height of the scraper assembly.

3. The adjustable double scraper trough according to claim 2, characterized in that, The thickness adjustment mechanism (150) includes: a digital micrometer, a stainless steel connector, and an adjustment screw; The digital micrometer is fixed to the scraper assembly on the side near the side plate (110) by bolts; The end of the adjusting screw abuts against the bottom of the groove of the side plate (110). Rotating the adjusting screw can change the distance between the scraper assembly and the bottom of the groove to adjust the lifting height of the scraper assembly.

4. The adjustable double scraper trough according to claim 1, characterized in that, The baffle adjustment mechanism (200) further includes: a cover plate (210) and an internal hex screw (230); The cover plate (210) covers the top of the first liquid tank and the second liquid tank, and the baffle (220) is disposed in the liquid tank and is fixed vertically to the cover plate (210); The cover plate (210) is provided with a sliding groove (211), and the baffle (220) is provided with a threaded hole at the middle of one end near the cover plate (210). The internal hex screw (230) passes through the sliding groove (211) and is screwed into the threaded hole of the baffle (220) to adjust the lateral position of the baffle (220) in the first liquid tank or the second liquid tank along the sliding groove (211).

5. An adjustable double scraper trough according to claim 4, characterized in that, The cover plate (210) is also provided with a feed inlet (212); The feed inlet (212) is located on the edge of the cover plate (210) away from the side plate (110), and the cover plate (210) corresponding to the first liquid tank or the second liquid tank is provided with at least two feed inlets distributed at equal intervals.

6. An adjustable double scraper trough according to claim 5, characterized in that, There are two sets of the baffle adjustment mechanism (200), which are respectively installed on the first liquid tank or the second liquid tank; The number of baffles (220) is 1-3. The baffles (220) are adjacent to each other, and the baffles (220) and the side plate (110) form the isolation chamber. Different liquids are injected into the isolation chamber through the feed inlet (212).

7. An adjustable double scraper trough according to claim 4, characterized in that, The sliding groove (211) is a T-shaped groove arranged along the length of the cover plate (210). The head of the internal hexagon screw (230) is embedded in the T-shaped groove and slides along the sliding groove (211).

8. An adjustable double scraper trough according to claim 1, characterized in that, Both the side plate (110) and the baffle (220) are trapezoidal; The baffle (220) is a corrosion-resistant plastic plate, and the base plate is a detachable polytetrafluoroethylene plate; The gap between the bottom of the baffle (220) and the base plate is 0.5-2mm, and the base plate is also provided with a guide groove parallel to the scraper assembly.

9. An adjustable double scraper trough according to claim 4, characterized in that, The top of the side plate (110) is provided with a positioning boss, and the edge of the cover plate (210) is provided with a groove that engages with the positioning boss. The cover plate (210) covers the first liquid tank or the second liquid tank by means of a snap-fit.

10. An adjustable double scraper trough according to claim 4, characterized in that, The side plate (110) is provided with a scale on the outside, and the scale corresponds to the position of the sliding groove (211) to quantitatively adjust the lateral displacement of the baffle (220).

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