A slurry brush coating device

Abstract

This invention provides a slurry brushing device. The device drives a brushing mechanism to move laterally above an operating table via a brushing moving component. A brushing preparation table and a substrate support are arranged on the upper surface of the operating table in the direction of the brushing mechanism's movement. A convex platform is provided on the brushing preparation table. During the brushing mechanism's movement, the bristles of the discharge cylinder roll against the surface of the convex platform and the substrate surface on the substrate support. This invention, through the convex platform, supplies slurry to bristles that are not fully covered. The bristles of the discharge cylinder are simultaneously penetrated by the slurry and rolled against the surface of the convex platform. The convex platform is large enough for the bristles of the discharge cylinder to roll around the entire surface, allowing the slurry at the discharge port to evenly penetrate the interior of the bristles under gravity. The process of the bristles being squeezed around the entire surface allows the slurry on the inner side of the bristles to better penetrate to the outer side, resulting in a more uniform and fine coating on the substrate surface.

Description

Technical Field

[0001] This utility model belongs to the field of coating preparation technology, specifically relating to a slurry brushing device. Background Technology

[0002] Refractory metals (such as tungsten, molybdenum, tantalum, niobium, and their alloys) are widely used in critical fields such as hot-end components of aerospace engines due to their excellent high-temperature strength, corrosion resistance, and thermal stability. However, refractory metals are prone to oxidation failure in high-temperature oxidizing environments, requiring surface coating with high-temperature anti-oxidation coatings to extend their service life. Currently, in laboratory coating preparation, a handheld spray gun is typically used for slurry spraying. This method is cumbersome, requiring repeated spraying-baking cycles to achieve the target thickness, resulting in high reliance on manual labor and time consumption. Furthermore, the prepared coating process lacks stability; the coating thickness uniformity is affected by the operator's experience, with local thickness deviations reaching ±30%, leading to large dispersion in anti-oxidation experimental data. Manual spraying is also prone to defects such as sagging and pinholes, affecting the coating's density and substrate bonding strength. In addition, during handheld spray gun operation, the slurry is prone to splashing due to operational errors, and the lack of a liquid collection and recovery design results in a high slurry waste rate. Utility Model Content

[0003] The technical problem this invention aims to solve is to provide a slurry brushing device to address the shortcomings of the prior art. This device, through the cooperation of an operating table, a brushing mechanism, a brushing moving component, a brush cleaning component, a brush preparation table, and a substrate support, achieves automated brushing operations. This solves the technical problems mentioned in the background art, such as high reliance on manual labor, time-consuming processes, insufficient coating process stability, and high slurry waste rate when using traditional handheld spray guns to brush coatings onto refractory metal substrates in the laboratory.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a slurry brushing device, characterized in that: the device includes a brushing moving component that drives the brushing mechanism to move laterally above the operating table, the brushing mechanism includes a brushing shell component, the brushing shell component includes a discharge cylinder and brush bristles disposed around the discharge cylinder, the upper surface of the operating table is arranged with a brushing preparation table and a substrate support member in the direction of movement of the brushing mechanism, the brushing preparation table includes a convex platform, and when the brushing mechanism is in the moving state, the brush bristles of the discharge cylinder roll against the surface of the convex platform and the substrate surface on the substrate support member.

[0005] Preferably, the brush coating housing assembly further includes connecting shafts symmetrically fixedly connected to both ends of the discharge cylinder. The brush coating moving assembly is provided with two sets corresponding to the connecting shafts. The brush coating moving assembly includes a drive component connector connected to the connecting shaft and a first drive component for lateral movement of the drive component connector. The body of the first drive component is fixed on the operating table, and the output end of the first drive component is connected to the drive component connector.

[0006] Preferably, the drive component connector includes a collar sleeved and installed around the connecting shaft, a bearing is provided between the collar and the connecting shaft, and a connector is provided on the side of the collar, the connector being fixedly connected to the output end of the first drive component.

[0007] Preferably, a brush cleaning liquid assembly is installed on the side of the connector away from the discharge cylinder. The brush cleaning liquid assembly includes a second driving component. The body of the second driving component is fixed to the connector. The output end of the second driving component is connected to a movable plate. A connecting rod is fixedly connected to the movable plate. A pressure ring is fixedly connected to the other end of the connecting rod. The pressure ring is sleeved on the circumference of the connecting shaft and located between the collar and the discharge cylinder. The pressure ring is coaxial with the discharge cylinder and the connecting shaft.

[0008] Preferably, the brushing moving assembly further includes a moving support connector, the moving support connector including a roller sleeved and installed on the periphery of the connecting shaft, and a track matching the roller is installed on the operating table.

[0009] Preferably, the roller is gear-shaped, and a rack is installed above the track, with the roller meshing with the rack.

[0010] Preferably, the brushing mechanism further includes an internal feeding assembly, which includes an inlet pipe and an outlet component. The inlet pipe passes through the inside of the brushing housing assembly. The inlet pipe is connected to a slurry feeding pump at both ends of the connecting shaft. The outlet components are arranged at equal intervals in the area of ​​the outlet cylinder on the inlet pipe. Each group of outlet components has multiple capillary channels distributed in a ring. The output end of the capillary channels is installed at the slot of the outlet cylinder.

[0011] Preferably, the substrate support includes a lifting member, a third driving member for vertical sliding of the lifting member, and a panel. The surface of the operating table has a slot, the lifting member passes through the slot, and the panel is connected above the lifting member.

[0012] This utility model has the following advantages compared with the prior art: 1. The device of this utility model can realize automated brushing operation, which saves manpower and reduces the workload of operators compared with manual spraying of coatings; at the same time, it improves the quality and thickness uniformity of the brushed coating, avoids inconsistent brushing effect caused by differences in operator skills, and thus reduces the error of the anti-oxidation test results of refractory metals; excess slurry in the experiment can be collected by the collection tank and reused to avoid slurry waste.

[0013] 2. This utility model, through the setting of the convex platform, supplies slurry to the feed pipe before the brush bristles are fully covered during the brushing operation. When slurry is discharged from all the outlets of the capillary channels, the brushing mechanism is driven to move. The brush bristles of the discharge cylinder are rolled against the surface of the convex platform while being penetrated by the slurry. The size of the convex platform is sufficient for the brush bristles of the discharge cylinder to roll around once, so that the slurry at the discharge outlet position is evenly penetrated into the interior of the brush bristles under the action of gravity. In addition, while the discharge cylinder rotates and penetrates, there is a squeezing relationship between it and the surface of the convex platform. The process of the brush bristles being squeezed around once allows the slurry on the inner side of the brush bristles to better penetrate to the outer side, so that a more uniform and consistent coating can be obtained when brushing the substrate surface.

[0014] 3. This utility model utilizes a roller and rack configuration. The roller is gear-shaped, and a rack is installed above the track. The roller and rack are meshed together. While the first driving component drives the connector, the gear-shaped roller runs on the rack. Since the roller and the connecting shaft are fixedly connected, as long as the connecting shaft moves, the roller rotates and moves on the rack. The roller is always rotating, so the connecting shaft and the discharge cylinder are also always rotating. This avoids the discharge cylinder from sliding during the brushing process. The discharge cylinder maintains a rolling motion during brushing, ensuring a uniform coating on the substrate surface.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the slurry brushing device of this utility model.

[0017] Figure 2 This is a schematic diagram showing the connection relationship between the brushing mechanism, the brushing moving component, and the brush bristle cleaning liquid component of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the brush coating shell assembly of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal feeding component of this utility model.

[0020] Figure 5 This is a structural schematic diagram of the mobile support connector and the drive connector of this utility model.

[0021] Figure 6 This is a schematic diagram of the brush preparation table of this utility model.

[0022] Figure 7 This is a schematic diagram of the structure of the substrate support component of this utility model.

[0023] Figure 8 This is a schematic diagram of the structure of the brush bristle cleaning liquid assembly of this utility model.

[0024] Explanation of reference numerals in the attached figures: Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 , Figure 3 and Figure 6 As shown, the slurry brushing device of this utility model includes a brushing moving component 3 that drives the brushing mechanism 2 to move laterally above the operating table 1. The brushing mechanism 2 includes a brushing shell component 21, which includes a discharge cylinder 212 and brush bristles 213 disposed around the discharge cylinder 212. A brushing preparation table 5 and a substrate support 6 are arranged on the upper surface of the operating table 1 in the direction of movement of the brushing mechanism 2. The brushing preparation table 5 includes a convex platform 51. When the brushing mechanism 2 is in the moving state, the brush bristles 213 of the discharge cylinder 212 roll against the surface of the convex platform 51 and the substrate surface on the substrate support 6.

[0027] It should be noted that the brushing moving component 3 drives the brushing mechanism 2 to move laterally above the operating table 1, first passing above the brushing preparation table 5, and then above the substrate support 6. In the moving state of the brushing mechanism 2, the surface of the brush bristles 213 of the discharge cylinder 212 rolls against the surface of the convex table 51 and the substrate surface on the substrate support 6, thereby enabling the brushing mechanism 2 to brush a high-temperature anti-oxidation and ablation coating onto the refractory metal substrate on the substrate support 6.

[0028] like Figure 1 , Figure 3 and Figure 5 As shown, in this embodiment, the brush coating housing assembly 21 further includes connecting shafts 211 symmetrically fixedly connected to both ends of the discharge cylinder 212. The brush coating moving assembly 3 is provided with two sets corresponding to the connecting shafts 211. The brush coating moving assembly 3 includes a drive component connector 32 connected to the connecting shaft 211 and a first drive component for the drive component connector 32 to move laterally. The body of the first drive component is fixed on the operating table 1, and the output end of the first drive component is connected to the drive component connector 32.

[0029] like Figure 5As shown, in this embodiment, the drive component connector 32 includes a collar 321 sleeved and installed around the connecting shaft 211. A bearing 322 is provided between the collar 321 and the connecting shaft 211. A connector 323 is provided on the side of the collar 321. The connector 323 is fixedly connected to the output end of the first drive component.

[0030] It should be noted that the brushing moving component 3 increases the stability of the movement trajectory of the brushing mechanism 2 by driving the positions of the connecting shafts 211 at both ends of the discharge cylinder 212, and improves the uniformity of the brush bristles 213 of the discharge cylinder 212 on the substrate surface. When the brushing moving component 3 drives the brushing mechanism 2, the first hydraulic unit 33 of the first driving component drives the connector 323 to move laterally as the output end. Subsequently, the collar 321 carries the brushing mechanism 2 to move laterally above the operating table 1. Due to the connection method between the collar 321 and the connecting shaft 211, the surface of the brush bristles 213 of the discharge cylinder 212 will rotate when there is an object in contact during the driving process of the first hydraulic unit 33. Therefore, when the brush bristles 213 of the discharge cylinder 212 contact the surface of the substrate to be brushed, the discharge cylinder 212 can roll to brush the coating layer.

[0031] like Figure 1 , Figure 2 and Figure 8 As shown, in this embodiment, a brush cleaning liquid assembly 4 is installed on the side of the connector 323 away from the discharge cylinder 212. The brush cleaning liquid assembly 4 includes a second driving member. The body of the second driving member is fixed on the connector 323. The output end of the second driving member is connected to a movable plate 43. A connecting rod 42 is fixedly connected to the movable plate 43. A pressure ring 41 is fixedly connected to the other end of the connecting rod 42. The pressure ring 41 is sleeved around the connecting shaft 211 and located between the collar 321 and the discharge cylinder 212. The pressure ring 41 is coaxial with the discharge cylinder 212 and the connecting shaft 211.

[0032] It should be noted that the outer diameter of the pressure ring 41 is between the outer diameter of the bristle 213 and the outer diameter of the discharge cylinder 212. The connecting rod 42 is symmetrical above and below the connector 323 and avoids the position interference between the connector 323 and the roller 311, so that the pressure ring 41 can be evenly stressed when it is pushed. Multiple sets of bristle cleaning components 4 are provided. The two connectors 323 on the side of the collar 321 are equipped with bristle cleaning components 4, which can ensure that the pressure ring 41 can be evenly stressed when it is pushed. The drive component connector 32 on the other set of connecting shafts 211 is also symmetrically equipped with bristle cleaning components 4.

[0033] It should be noted that, under the joint drive of the second hydraulic device 44 of the second drive component, the two pressure rings 41 at both ends of the discharge cylinder 212 drive the movable plate 43 and the pressure rings 41 to move. When the two pressure rings 41 move inward, they squeeze the slurry in the brush bristles 213 out, reducing the amount of slurry in the brush bristles 213. At the same time, the squeezing makes the unremoved slurry evenly distributed in the brush bristles 213, which is ready to provide a uniform slurry in the brush bristles 213 for the next time.

[0034] like Figure 5 As shown, in this embodiment, the brushing moving component 3 further includes a moving support connector 31, which includes a roller 311 sleeved around the connecting shaft 211, and a track 312 matching the roller 311 is installed on the operating table 1.

[0035] like Figure 5 As shown, in this embodiment, the roller 311 is gear-shaped, and a rack 3121 is installed above the track 312. The roller 311 and the rack 3121 are meshed and connected.

[0036] It should be noted that while the first hydraulic unit 33 is driving the connector 323, the gear-shaped roller 311 runs on the rack 3121. Since the roller 311 is fixedly connected to the connecting shaft 211, as long as the connecting shaft 211 moves, the roller 311 will rotate and move on the rack 3121. The roller 311 is always rotating, so the connecting shaft 211 and the discharge cylinder 212 are also always rotating. This can prevent the discharge cylinder 212 from sliding during the brushing process. The discharge cylinder 212 maintains a rolling brushing method to make the coating on the substrate surface uniform and consistent.

[0037] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the brushing mechanism 2 further includes an internal feeding assembly 22, which includes an inlet pipe 221 and an outlet component 222. The inlet pipe 221 passes through the inside of the brushing housing assembly 21. The inlet pipe 221 is connected to a slurry feeding pump at both ends of the connecting shaft 211. The outlet components 222 are arranged at equal intervals in the area of ​​the outlet cylinder 212 on the inlet pipe 221. Each group of outlet components 222 has multiple capillary channels 2221 arranged in a ring. The output end of the capillary channels 2221 is installed at the slot of the outlet cylinder 212.

[0038] It should be noted that the feed pipe 221 runs through the inside of the brush coating housing assembly 21. The feed pipe 221 is connected to the slurry supply pump at both ends of the connecting shaft 211. The discharge components 222 are arranged at equal intervals in the area of ​​the discharge cylinder 212 on the feed pipe 221. Each set of discharge components 222 has multiple capillary channels 2221 distributed in a ring. The output end of the capillary channels 2221 is installed at the slot of the discharge cylinder 212. During the movement of the brush coating mechanism 2, slurry seeps out from the surface of the discharge cylinder 212. The mixed coating slurry is fed from both ends by the slurry supply pump. The material is fed into the center position through pipe 221, and then flows out of the surface of the discharge cylinder 212 from the capillary channels 2221 of multiple discharge components 222, penetrating into the interior of the bristles 213. The dual-sided feeding method can shorten the time for all discharge components 222 to discharge. The multiple sets of discharge components 222 are distributed laterally on the discharge cylinder 212 in large quantities, and each set of discharge components 222 has a large number of discharge points around the discharge cylinder 212, which makes the discharge position distribution dense, shortens the time for the slurry to fully penetrate the bristles 213, and improves the uniformity of the slurry penetration into the bristles 213.

[0039] like Figure 6 As shown, in this embodiment, a liquid collection tank 52 is provided inside the brush preparation table 5. A raised edge 53 is provided on the edge of the liquid collection tank 52. A raised platform 51 is provided on the side of the liquid collection tank 52 near the substrate support member 6. The area of ​​the liquid collection tank 52 on the side away from the substrate support member 6 is larger, and the area on the side near the substrate support member 6 is smaller.

[0040] It should be noted that before the brushing operation, the situation where the brush bristles 213 are not evenly filled with slurry can be either the first brushing or the situation where the slurry in the brush bristles 213 has been cleaned. The discharge cylinder 212 is positioned above the area of ​​the collection tank 52 away from the substrate support 6. Slurry is supplied to the feed pipe 221. When slurry is discharged from all the outlets of the capillary channels 2221, the brushing mechanism 2 is driven to move. The brush bristles 213 of the discharge cylinder 212 are simultaneously permeated by the slurry and rolled against the surface of the convex platform 51. The surface of the convex platform 51 is sufficient for the brush bristles 213 of the discharge cylinder 212 to roll around once, thereby achieving the desired effect. Under the influence of gravity, the slurry at the feed inlet penetrates evenly into the interior of the brush bristles 213. In addition, as the discharge cylinder 212 rotates and penetrates, there is a squeezing relationship between it and the surface of the convex platform 51. The process of the brush bristles 213 being squeezed all around allows the slurry on the inner side of the brush bristles 213 to penetrate better to the outer side, thereby obtaining a more uniform and consistent coating thickness when brushing on the substrate surface. If there is excess slurry squeezed out after being squeezed by the convex platform 51, it can flow into the collection tank 52 along the inclined surface of the convex platform 51, and then be collected from the inclined surface of the collection tank 52 for reuse, which is energy-saving and environmentally friendly.

[0041] It should be noted that after multiple coating applications on the substrate, the slurry in the brush bristles 213 may be unevenly distributed. The brush bristle cleaning component 4 can be used to clean the slurry in the brush bristles 213, and the process of passing the discharge cylinder 212 through the brush preparation table 5 area can be repeated to ensure that the slurry is evenly distributed on the brush bristles 213.

[0042] It should be noted that when cleaning the slurry present in the brush bristles 213, the discharge cylinder 212 is positioned above the area of ​​the liquid collection tank 52 away from the substrate support 6, so that the excess slurry after squeezing falls into the liquid collection tank 52 accordingly.

[0043] like Figure 7 As shown, in this embodiment, the substrate support 6 includes a lifting member 61, a third driving member for vertically sliding the lifting member 61, and a panel 63. The surface of the operating table 1 has a slot, the lifting member 61 passes through the slot, and the panel 63 is connected above the lifting member 61.

[0044] It should be noted that before the brushing mechanism 2 moves above the substrate support 6 to perform brushing, the substrate to be brushed is placed above the panel 63. The height of the panel 63 can be adjusted to change the degree of contact between the brush bristles 213 and the substrate. At the same time, the required coating thickness can be adjusted by controlling the slurry discharge flow rate. Compared with the method of repeatedly brushing to obtain a coating of a specified thickness, controlling the coating to be brushed within the required range in one go can improve efficiency, save the operation of repeated drying, and avoid coating delamination caused by repeated brushing.

[0045] In actual use, the brushing moving component 3 drives the brushing mechanism 2 to move laterally above the operating table 1, first passing above the brushing preparation table 5, and then above the substrate support 6. While the brushing mechanism 2 is moving, the brush bristles 213 of the discharge cylinder 212 roll against the surface of the convex platform 51 and the substrate surface on the substrate support 6. This allows the brushing mechanism 2 to apply a high-temperature anti-oxidation and ablation coating to the refractory metal substrate on the substrate support 6. Compared to manual spraying, this brushing method saves manpower and reduces the workload of operators. It also improves the quality and thickness uniformity of the brushed coating, avoiding inconsistencies in brushing effects caused by differences in operator skill, thereby reducing errors in the anti-oxidation test results of refractory metals. Excess slurry can be collected in the collection tank and reused, avoiding slurry waste.

[0046] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any simple modifications, alterations, and equivalent changes made to the above embodiments based on the technical essence of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A slurry brush coating apparatus characterized by: The device includes a brushing moving assembly (3) that drives the brushing mechanism (2) to move laterally above the operating table (1). The brushing mechanism (2) includes a brushing housing assembly (21), which includes a discharge cylinder (212) and brush bristles (213) arranged around the discharge cylinder (212). A brushing preparation table (5) and a substrate support (6) are arranged on the upper surface of the operating table (1) in the direction of movement of the brushing mechanism (2). The brushing preparation table (5) includes a convex platform (51). When the brushing mechanism (2) is in the moving state, the brush bristles (213) of the discharge cylinder (212) roll against the surface of the convex platform (51) and the substrate surface on the substrate support (6).

2. A slurry brush coating apparatus according to claim 1, wherein: The brush coating housing assembly (21) also includes a connecting shaft (211) symmetrically fixedly connected to both ends of the discharge cylinder (212). The brush coating moving assembly (3) is provided with two sets corresponding to the connecting shaft (211). The brush coating moving assembly (3) includes a drive component connector (32) connected to the connecting shaft (211) and a first drive component for the drive component connector (32) to move laterally. The body of the first drive component is fixed on the operating table (1), and the output end of the first drive component is connected to the drive component connector (32).

3. A slurry brush coating apparatus according to claim 2, wherein: The drive component connector (32) includes a collar (321) sleeved and installed around the connecting shaft (211), a bearing (322) is provided between the collar (321) and the connecting shaft (211), and a connector (323) is provided on the side of the collar (321), and the connector (323) is fixedly connected to the output end of the first drive component.

4. The slurry brushing device according to claim 3, characterized in that: The brush cleaning liquid assembly (4) is installed on the side of the connector (323) away from the discharge cylinder (212). The brush cleaning liquid assembly (4) includes a second driving member. The body of the second driving member is fixed on the connector (323). The output end of the second driving member is connected to a movable plate (43). The movable plate (43) is fixedly connected to a connecting rod (42). The other end of the connecting rod (42) is fixedly connected to a pressure ring (41). The pressure ring (41) is sleeved on the periphery of the connecting shaft (211) and located between the collar (321) and the discharge cylinder (212). The pressure ring (41) is coaxial with the discharge cylinder (212) and the connecting shaft (211).

5. The slurry brushing device according to claim 2, characterized in that: The brushing moving assembly (3) also includes a moving support connector (31), which includes a roller (311) sleeved and installed around the connecting shaft (211), and a track (312) matching the roller (311) is installed on the operating table (1).

6. The slurry brushing device according to claim 5, characterized in that: The roller (311) is gear-shaped, and a rack (3121) is installed above the track (312). The roller (311) and the rack (3121) are meshed and connected.

7. The slurry brushing device according to claim 2, characterized in that: The brushing mechanism (2) also includes an internal feeding assembly (22), which includes a feed pipe (221) and a discharge component (222). The feed pipe (221) passes through the inside of the brushing housing assembly (21). The feed pipe (221) is connected to a slurry feeding pump at both ends of the connecting shaft (211). The discharge components (222) are arranged at equal intervals in the area of ​​the discharge cylinder (212) on the feed pipe (221). Each set of discharge components (222) has multiple capillary channels (2221) distributed in a ring. The output end of the capillary channel (2221) is installed at the slot of the discharge cylinder (212).

8. The slurry brushing device according to claim 1, characterized in that: The substrate support (6) includes a lifting member (61), a third driving member for vertically sliding the lifting member (61), and a panel (63). The surface of the operating table (1) has a slot, the lifting member (61) passes through the slot, and the panel (63) is connected above the lifting member (61).

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