A double-sided coating device for a superconducting tape buffer layer

Abstract

The utility model belongs to superconducting tape buffer layer preparation technical field especially, it is a kind of superconducting tape buffer layer double-sided coating device, aiming at the problem that the existing spray head is blocked and leads to uneven spraying and poor film thickness precision, the following scheme is presented, including box, the inside bottom surface of box is fixedly connected with multiple support I and multiple support II, feeding roller and receiving roller are rotatably connected at the side of corresponding support I respectively, two motors are fixedly connected at the side of corresponding support I respectively, in the utility model, trace impurities in solution are filtered initially by filter screen, the solution inside shell is heated by heating ring, avoid that solution is blocked spray head and arc-shaped scraper synchronous rotation along with solution flow due to room temperature solvent volatilization and precipitate solid particle, real-time scrape and remove the impurities attached to filter screen surface, prevent filter screen from being blocked, to ensure precursor solution spraying flow stability, avoid that local coating is too thick or too thin due to flow fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of superconducting tape buffer layer preparation technology, and in particular to a double-sided coating device for superconducting tape buffer layer. Background Technology

[0002] The buffer layer of a superconducting tape is a key structure ensuring its superconducting performance. Currently, industrial applications mostly use solution methods (such as sol-gel deposition, SDP) to prepare this buffer layer. Specifically, a precursor solution such as cerium nitrate-ethanol is sprayed onto the surface of the superconducting tape, followed by curing to form a uniform buffer layer. However, existing superconducting tape buffer layer coating equipment still faces many technical challenges in practical applications, severely restricting production efficiency and product quality. The specific problems are as follows: Existing coating devices mostly use a single filter screen to filter precursor impurities and lack a targeted anti-coagulation structure. Cerium nitrate-ethanol solution is prone to solid particles precipitating due to solvent evaporation at room temperature, or the accumulation of trace impurities in the solution can clog the nozzle, resulting in unstable spray flow and ultimately causing excessive deviation in the thickness of the buffer layer, which cannot meet the stringent requirements of superconducting tape for the uniformity of the buffer layer thickness. To address this, a double-sided coating device for the buffer layer of superconducting tape is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as uneven coating and poor film thickness accuracy caused by nozzle clogging, and to propose a double-sided coating device for the buffer layer of superconducting tape.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A double-sided coating device for a superconducting tape buffer layer includes a housing, with multiple first supports and multiple second supports fixedly connected to the bottom surface of the housing. The feeding roller and the receiving roller are rotatably connected to one side of the corresponding second support; Two motors are fixedly connected to one side of the corresponding second support, and one end of the output shaft of each motor is fixed to the corresponding feeding roller and receiving roller, respectively. Multiple drive rollers are rotatably connected between their respective first supports; The guide rail is fixedly connected to the bottom surface inside the housing, and a slider is slidably connected to the top of the guide rail; The support rod is fixedly connected to the top of the slider, and multiple spraying mechanisms are symmetrically arranged on one side of the support rod. The spraying mechanism includes two arc-shaped clamping blocks rotatably connected to one side of the support rod. One end of each arc-shaped clamping block is inserted with a through bolt and threadedly connected to the other arc-shaped clamping block. The two arc-shaped clamping blocks together clamp and fix a spray head. A heating ring is sleeved on the outer circumference of the spray head. The spray head is connected to an external liquid supply device through a pipe. The nozzle includes a housing, a fixed rod, blades, an arc-shaped scraper, a filter screen, and multiple nozzles. The fixed rod is fixed to the inner circumference of the housing, the blades are rotatably connected to the middle of the fixed rod, the arc-shaped scraper is fixed to the other side of the blades, the filter screen is snapped into the inner circumference of the housing, and the two sides of the filter screen abut against the housing and the arc-shaped scraper respectively. Multiple nozzles are connected to the outside of the housing. Two auxiliary support mechanisms are located on the bottom inside the housing to support the feeding roller and the receiving roller.

[0005] In one possible design, the auxiliary support mechanism includes a cylinder fixedly connected to the bottom surface inside the housing, with one end of the cylinder piston rod fixedly connected to an arc-shaped bracket.

[0006] In one possible design, the arcuate portions of the two arc-shaped supports rotate relative to one side of the corresponding feed roller and take-up roller.

[0007] In one possible design, two doors are rotatably connected to the two sides of the opening of the box.

[0008] In one possible design, a collection chamber is provided inside the shell, with the opening of the collection chamber located on the outer circumference of the arc-shaped scraper.

[0009] In one possible design, a through-hole set screw is threaded onto one side of the slider, with the end face of the set screw abutting against one side of the guide rail.

[0010] In one possible design, the curved scraper is made of polytetrafluoroethylene (PTFE).

[0011] In this application: The two auxiliary support mechanisms on the bottom of the box start to work. The cylinder drives the arc-shaped bracket to descend, and one side of the feeding roller and the receiving roller opens. The superconducting tape is put into the feeding roller and connected to the receiving roller. It is fixed by the air expansion shaft on the feeding roller and the receiving roller. The working principle and wiring method of the air expansion shaft are conventional means or common knowledge, so they will not be described in detail here. The cylinder drives the arc-shaped bracket to rise, so that the arc part of the arc-shaped bracket rotates and fits against one side of the feeding roller and the receiving roller. The auxiliary support of the arc-shaped bracket reduces the vibration of the roller body. After the device is started, two motors drive the feeding roller and the receiving roller to rotate synchronously. The superconducting tape is released from the feeding roller, guided and supported by multiple transmission rollers, and then conveyed to the receiving roller. The external liquid supply equipment extracts the precursor solution from the storage tank through a booster pump and delivers the precursor solution such as cerium nitrate-ethanol to the nozzle through pipelines. The solution first enters the shell and flows to the filter screen. The filter screen filters out trace impurities in the solution to prevent impurities from directly entering the nozzle and causing blockage. At the same time, the heating ring on the outer circumference of the nozzle is energized and heats up to maintain the temperature of the shell and the internal solution at 40-60℃, avoiding the precipitation of solid particles due to solvent evaporation at room temperature in the cerium nitrate-ethanol solution, thus reducing the risk of solidification and blockage at the source. When the solution flows through the filter screen, it will drive the blades connected in the middle of the fixed rod to rotate. The blades will drive the arc-shaped scraper fixed on the other side to rotate synchronously. The arc-shaped scraper (made of polytetrafluoroethylene, wear-resistant and does not scratch the filter screen) scrapes off the impurities attached to the surface of the filter screen. The impurities scraped off by the arc-shaped scraper fall into the collection chamber opened inside the shell under the action of centrifugal force, preventing the impurities from mixing back into the solution or adhering to the inner wall of the shell. The filtered and heated anti-condensation precursor solution is sprayed out through a nozzle at one end of the shell. Since multiple spraying mechanisms are symmetrically arranged on one side of the support rod, the symmetrical nozzles can spray the solution onto the upper and lower surfaces of the superconducting tape at the same time, realizing the synchronous coating of the tape on both sides. If the spraying position needs to be adjusted, the slider can be pushed to slide along the guide rail, and the support rod moves synchronously with the slider. The spraying position is fixed by rotating the set screw to abut against the side of the guide rail. The superconducting tape, after completing double-sided spraying, continues to be fed to the take-up roller, which then winds up the coated tape. During this process, the doors on both sides of the box opening can be closed to prevent external dust from entering the box and contaminating the tape and precursor solution, while also reducing solution evaporation and further ensuring the quality of the buffer layer coating.

[0012] Beneficial effects: In this utility model, the double-sided coating device for the buffer layer of superconducting tape, through the combined use of components such as heating ring, filter screen, nozzle, and back shell, the filter screen first performs preliminary filtration of trace impurities in the solution, and the heating ring maintains the temperature of the shell and the internal solution at 40-60℃, thereby preventing the solid particles from precipitating out of the solution due to solvent evaporation at room temperature from the source. In this utility model, the superconducting tape buffer layer double-sided coating device uses components such as filter screen, collection chamber, arc scraper, and blades in combination. The arc scraper rotates synchronously with the solution flow to scrape off impurities attached to the filter screen surface in real time, preventing filter screen blockage and resulting in spray flow fluctuations. The collection chamber accurately collects the scraped impurities, preventing impurities from re-mixing into the solution or adhering to the inner wall of the nozzle. In this invention, a filter screen is used to preliminarily filter trace impurities in the solution. A heating ring heats the solution inside the shell to prevent solid particles from precipitating out due to solvent evaporation at room temperature and clogging the nozzle. An arc-shaped scraper rotates synchronously with the solution flow to scrape off impurities attached to the filter screen surface in real time, preventing filter screen blockage. This ensures a stable flow rate of the precursor solution spraying and avoids local coatings that are too thick or too thin due to flow fluctuations. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first perspective structure of a double-sided coating device for a superconducting tape buffer layer proposed in this utility model. Figure 2 This is a partial cross-sectional view of the structure of a double-sided coating device for a superconducting tape buffer layer proposed in this utility model. Figure 3 This is a magnified view of point A of the double-sided coating device for the buffer layer of a superconducting tape proposed in this utility model. Figure 4 This is a schematic diagram of the nozzle cross-sectional view of a double-sided coating device for a superconducting tape buffer layer proposed in this utility model.

[0014] In the diagram: 1. Feeding roller; 2. Drive roller; 3. Top screw; 4. Slider; 5. Guide rail; 6. Cylinder; 7. Housing; 701. First support; 702. Second support; 8. Receiving roller; 9. Arc-shaped bracket; 10. Support rod; 11. Motor; 12. Arc-shaped clamping block; 13. Bolt; 14. Heating ring; 15. Nozzle; 1501. Nozzle; 1502. Housing; 15021. Collection chamber; 1503. Fixing rod; 1504. Blade; 1505. Arc-shaped scraper; 1506. Filter screen. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In one implementation case, refer to Figures 1-4 A strip double-sided coating device includes: a box 7, with a plurality of first supports 701 and a plurality of second supports 702 fixedly connected to the bottom surface of the box 7; The feeding roller 1 and the receiving roller 8 are rotatably connected to one side of the corresponding second support 702; Two motors 11 are fixedly connected to one side of the corresponding second support 702, and one end of the output shaft of the two motors 11 is fixed to the corresponding feeding roller 1 and receiving roller 8 respectively. Multiple drive rollers 2 are rotatably connected between corresponding first supports 701; The guide rail 5 is fixedly connected to the bottom surface inside the housing 7, and the top of the guide rail 5 is slidably connected to the slider 4; The support rod 10 is fixedly connected to the top of the slider 4, and multiple spraying mechanisms are symmetrically arranged on one side of the support rod 10. In particular, the spraying mechanism includes two arc-shaped clamping blocks 12 rotatably connected to one side of the support rod 10. One end of the arc-shaped clamping block 12 is inserted with a through bolt 13 and threadedly connected to the other arc-shaped clamping block 12. The two arc-shaped clamping blocks 12 together clamp and fix the nozzle 15. A heating ring 14 is sleeved on the outer circumference of the nozzle 15. The heating ring 14 is heated by electricity to provide the internal solution temperature of the nozzle 15, preventing solid particles from precipitating out of the internal solution of the nozzle 15 due to low temperature. The nozzle 15 is connected to an external liquid supply device through a pipeline. The external liquid supply device extracts the precursor solution from the storage tank through a booster pump and delivers it to the nozzle 15 through a pipeline for spraying. In addition, the nozzle 15 includes a housing 1502, a fixing rod 1503, a blade 1504, an arc-shaped scraper 1505, a filter screen 1506, and multiple nozzles 1501. The fixing rod 1503 is fixed to the inner circumference of the housing 1502. The blade 1504 is rotatably connected to the middle of the fixing rod 1503. The blade 1504 rotates around the fixing rod 1503 through the flow of the solution, providing power. The arc-shaped scraper 1505 is fixed to the other side of the blade 1504. The filter screen 1506 is snapped into the inner circumference of the housing 1502. The two sides of the filter screen 1506 abut against the housing 1502 and the arc-shaped scraper 1505, respectively. The filter screen 1506 filters impurities in the precursor solution. Multiple nozzles 1501 are connected to the outside of the housing 1502. The filtered precursor solution is evenly sprayed onto the surface of the superconducting tape through the nozzles 1501. Two auxiliary support mechanisms are set on the bottom surface inside the housing 7 to support the feeding roller 1 and the receiving roller 8.

[0017] It should be noted that the auxiliary support mechanism includes a cylinder 6 fixedly connected to the bottom surface inside the housing 7, and an arc-shaped bracket 9 is fixedly connected to one end of the piston rod of the cylinder 6.

[0018] This application can be used in the field of superconducting tape buffer layer preparation technology, and can also be used in other fields applicable to this application.

[0019] In another implementation case, refer to Figures 1-4 A double-sided coating device for a superconducting tape buffer layer is applied to the field of superconducting tape buffer layer preparation technology. The arc parts of the two arc-shaped supports 9 rotate with one side of the corresponding feeding roller 1 and receiving roller 8.

[0020] In this implementation case, two doors are rotatably connected to the two sides of the opening of the box 7. Closing the doors prevents external dust from entering and avoids contamination of the buffer layer.

[0021] In particular, a collection chamber 15021 is provided inside the housing 1502. The opening of the collection chamber 15021 is located on the outer side of the circumference of the arc-shaped scraper 1505 to collect the impurities scraped off by the arc-shaped scraper 1505 and prevent the impurities from being re-mixed into the solution and the inner wall of the nozzle.

[0022] In addition, a through set screw 3 is threaded onto one side of the slider 4, and the end face of the set screw 3 abuts against one side of the guide rail 5.

[0023] It should be noted that the arc-shaped scraper 1505 is made of polytetrafluoroethylene, which maintains wear-resistant properties and scrapes away impurities on the filter screen 1506 without scratching the filter screen 1506.

[0024] However, as is well known to those skilled in the art, the working principles and wiring methods of cylinder 6, motor 11 and heating ring 14 are all conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0025] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for double-sided coating of a buffer layer on a superconducting tape, characterized in that, include: The box (7) has multiple first supports (701) and multiple second supports (702) fixedly connected to the bottom surface of the box (7). The feeding roller (1) and the receiving roller (8) are rotatably connected to one side of the corresponding second support (702); Two motors (11) are fixedly connected to one side of the corresponding second support (702), and one end of the output shaft of the two motors (11) is fixed to the corresponding feeding roller (1) and receiving roller (8); Multiple drive rollers (2) are rotatably connected between corresponding first supports (701); The guide rail (5) is fixedly connected to the bottom surface of the box (7), and the top of the guide rail (5) is slidably connected to the slider (4). The support rod (10) is fixedly connected to the top of the slider (4), and multiple spraying mechanisms are symmetrically arranged on one side of the support rod (10); The spraying mechanism includes two arc-shaped clamping blocks (12) rotatably connected to one side of the support rod (10). One end of one arc-shaped clamping block (12) is inserted with a through bolt (13) and threadedly connected to the other arc-shaped clamping block (12). The two arc-shaped clamping blocks (12) together clamp and fix a nozzle (15). A heating ring (14) is sleeved on the outer circumference of the nozzle (15). The nozzle (15) is connected to an external liquid supply device through a pipe. The nozzle (15) includes a housing (1502), a fixing rod (1503), a blade (1504), an arc-shaped scraper (1505), a filter screen (1506), and multiple nozzles (1501). The fixing rod (1503) is fixed to the inner circumference of the housing (1502). The blade (1504) is rotatably connected to the middle of the fixing rod (1503). The arc-shaped scraper (1505) is fixed to the other side of the blade (1504). The filter screen (1506) is snapped into the inner circumference of the housing (1502). The two sides of the filter screen (1506) abut against the housing (1502) and the arc-shaped scraper (1505) respectively. Multiple nozzles (1501) are connected to the outside of the housing (1502). Two auxiliary support mechanisms are set on the bottom of the box (7) to support the feeding roller (1) and the receiving roller (8).

2. The double-sided coating device for a superconducting tape buffer layer according to claim 1, characterized in that, The auxiliary support mechanism includes a cylinder (6) fixedly connected to the bottom surface inside the housing (7), and an arc-shaped bracket (9) is fixedly connected to one end of the piston rod of the cylinder (6).

3. The double-sided coating device for a superconducting tape buffer layer according to claim 2, characterized in that, The arcuate portions of the two arcuate supports (9) rotate relative to one side of the corresponding feed roller (1) and take-up roller (8).

4. The double-sided coating device for a superconducting tape buffer layer according to claim 1, characterized in that, The box body (7) has two doors rotatably connected to both sides of the opening.

5. The double-sided coating device for a superconducting tape buffer layer according to claim 1, characterized in that, The housing (1502) has a collection cavity (15021) inside, and the opening of the collection cavity (15021) is located on the outer side of the circumference of the arc-shaped scraper (1505).

6. The double-sided coating device for a superconducting tape buffer layer according to claim 1, characterized in that, The slider (4) has a threaded connection on one side with a through set screw (3), and the end face of the set screw (3) abuts against one side of the guide rail (5).

7. The double-sided coating device for a superconducting tape buffer layer according to claim 1, characterized in that, The arc-shaped scraper (1505) is made of polytetrafluoroethylene.

Images