Scraper mechanism for drying machine
By designing an adjustable-angle and heat-dissipating scraper mechanism, the problem of fixed scraper position was solved, enabling timely scraping and efficient drying of slurry, thus improving the working efficiency and quality of the dryer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-03-31
AI Technical Summary
The existing dryer scraper has a fixed blade position, which causes the slurry to not be scraped off the drum in time, resulting in accumulation. As the accumulation thickness increases, the scraper gradually loses its function, affecting the heat transfer efficiency.
A scraper mechanism was designed, comprising an outer frame, a mounting bracket, a scraper assembly, an angle adjustment assembly, and a heat dissipation assembly. Through bolt connections, angle adjustment, and a cooling fan, the scraper can be flexibly adjusted and effectively cooled, ensuring that the slurry slides smoothly.
It improves drying efficiency, avoids slurry accumulation, ensures drying quality, enhances scraping effect, and adapts to different drying processes and roller surface conditions.
Smart Images
Figure CN224065870U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this disclosure relate to the technical field of desiccant scrapers, and more specifically, to a scraper mechanism for a dryer. Background Technology
[0002] The scraper in a rotary drum scraper dryer is made of a hardened saw blade with one edge sharpened. During initial operation, the material distribution on the drum by the feeding roller is uneven. Furthermore, the rear scraper cannot scrape the titanium dioxide slurry into a completely uniform thickness, resulting in an uneven layer of material after drying on the drum. Initially, the scraper is effective, but as time progresses, noticeable unevenness appears on the drum surface. At this point, the scraper can only scrape off the protruding parts of the material; that is, less and less material is scraped off. The scraper is essentially suspended between the most protruding point and the edge, merely compacting the material layer until it can no longer be scraped off. The main reason for this problem is that the scraper blade position is fixed and cannot be adjusted. If the slurry cannot be scraped off the drum in time, it will accumulate, becoming increasingly thick and hard, severely affecting heat conduction and significantly reducing efficiency. As the accumulated thickness increases, the entire scraper gradually becomes completely ineffective.
[0003] Therefore, improvements have been made to address the aforementioned issues. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a scraper mechanism for a dryer, which solves the technical problem in the prior art that the slurry cannot be scraped off the drum in time, resulting in accumulation, and as the accumulation thickness increases, the entire scraper gradually loses its function.
[0005] According to one aspect, at least one embodiment of the present disclosure provides a scraper mechanism for a dryer, comprising:
[0006] An outer frame and a drying roller, wherein the drying roller is rotatably connected inside the outer frame;
[0007] A mounting bracket and a scraper assembly are provided, wherein the mounting bracket is disposed inside the outer frame and the scraper assembly is disposed on the mounting bracket;
[0008] An angle adjustment assembly is disposed between the mounting frame and the outer frame;
[0009] The scraper assembly includes a connecting cavity, which is formed within the mounting bracket. A main scraper is inserted into the connecting cavity, and a first bolt is screwed between the bottom of the mounting bracket and the main scraper.
[0010] As a further technical solution, a connecting frame is provided on the surface of the main scraper, a secondary blade holder is inserted and connected in the connecting frame, a second bolt is screwed between the secondary blade holder and the connecting frame, a partition is provided on the surface of the mounting frame, and a rotating roller is rotatably connected in the secondary blade holder.
[0011] As a further technical solution, the angle adjustment component includes a pair of notches, which are opened on both sides of the outer frame. Both sides of the outer frame are rotatably connected to a swing frame via a rotating shaft, and one of the swing frames has an external gear at its upper end.
[0012] As a further technical solution, a fixing frame is provided on the side surface of the outer frame, a control motor is installed on the fixing frame, and a drive gear is provided at the output end of the control motor, the drive gear meshing with the outer gear.
[0013] As a further technical solution, a connecting rod is provided on the side end face of the swing frame, the connecting rod is connected to both sides of the mounting frame, and a support cylinder is installed on the swing frame on the other side.
[0014] As a further technical solution, a heat dissipation component is also included. The heat dissipation component is disposed on the mounting bracket and includes several external brackets, each of which is equipped with a cooling fan.
[0015] As a further technical solution, a conveyor belt is provided at the bottom of the outer frame.
[0016] As a further technical solution, the cooling fan is located below and between the drying roller and the main scraper.
[0017] As a further technical solution, the shroud has an overall curved structure with an arc transition.
[0018] The beneficial effects of the embodiments disclosed herein are as follows:
[0019] 1. In this disclosure, the main scraper and the mounting frame are connected by a first bolt, which facilitates disassembly and replacement and allows for timely handling of worn scrapers. The secondary scraper holder is connected to the main scraper by a second bolt, allowing for flexible adjustment of the secondary scraper holder's position. It works in conjunction with the main scraper to enhance the scraping effect. The rotating roller rotates within the secondary scraper holder, which reduces friction between the scraped slurry and the scraper, allowing the slurry to slide off smoothly, effectively preventing slurry accumulation, improving drying efficiency, and ensuring drying quality.
[0020] 2. In this disclosure, by controlling the coordination of the motor, drive gear and external gear, the rotation angle of the swing frame is precisely adjusted, thereby adjusting the angle of the scraper assembly, so that the scraper can always maintain a good contact with the surface of the drying roller, adapting to different drying processes and the surface conditions of the drying roller. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0022] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;
[0023] Figure 2 This is an isometric drawing of the present disclosure;
[0024] Figure 3 This is a cross-sectional view of the present disclosure;
[0025] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;
[0026] Figure 5 Appendix to this disclosure Figure 3 Enlarged view of part B in the middle section;
[0027] In the diagram: 1. Outer frame; 2. Drying roller; 3. Mounting frame; 4. Scraper assembly; 4-1. Connecting cavity; 4-2. Main scraper; 4-3. First bolt; 4-4. Connecting frame; 4-5. Secondary scraper holder; 4-6. Second bolt; 4-7. Partition; 4-8. Rotating roller; 5. Angle adjustment assembly; 5-1. Notch; 5-2. Swing frame; 5-3. External gear; 5-4. Fixed frame; 5-5. Control motor; 5-6. Drive gear; 5-7. Connecting rod; 5-8. Support cylinder; 6. Heat dissipation assembly; 6-1. Outer frame; 6-2. Cooling fan; 7. Conveyor belt. Detailed Implementation
[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0034] like Figures 1-5 As shown, a scraper mechanism for a dryer according to an embodiment of the present disclosure includes:
[0035] The outer frame 1 and the drying roller 2 are rotatably connected inside the outer frame 1;
[0036] Mounting bracket 3 and scraper assembly 4, the mounting bracket 3 is located inside the outer frame 1, and the scraper assembly 4 is located on the mounting bracket 3;
[0037] Angle adjustment component 5 is disposed between mounting frame 3 and outer frame 1;
[0038] The scraper assembly 4 includes a connecting cavity 4-1, which is located within the mounting frame 3. A main scraper 4-2 is inserted into the connecting cavity 4-1. A first bolt 4-3 is screwed between the bottom of the mounting frame 3 and the main scraper 4-2. A connecting frame 4-4 is provided on the surface of the main scraper 4-2. A secondary scraper holder 4-5 is inserted into the connecting frame 4-4. A second bolt 4-6 is screwed between the secondary scraper holder 4-5 and the connecting frame 4-4. A partition 4-7 is provided on the surface of the mounting frame 3. A rotating roller 4-8 is rotatably connected inside the secondary scraper holder 4-5.
[0039] In some examples, to achieve a scraping effect that prevents accumulation, a scraper assembly 4 is designed, which includes a connecting cavity 4-1 opened in the mounting frame 3, and a main scraper 4-2 is inserted and connected inside. A first bolt 4-3 is screwed between the bottom of the mounting frame 3 and the main scraper 4-2. The main scraper 4-2 can be removed by removing the first bolt 4-3. A connecting frame 4-4 is provided on the surface of the main scraper 4-2. A secondary scraper holder 4-5 is inserted and connected in the connecting frame 4-4, and a second bolt 4-6 is screwed between them. A partition 4-7 is provided on the surface of the mounting frame 3. A rotating roller 4-8 is rotatably connected in the secondary scraper holder 4-5, which can support the scraped material to slide down.
[0040] like Figures 1-5 As shown, this embodiment proposes an angle adjustment component 5, which includes a pair of notches 5-1. The notches 5-1 are opened on both sides of the outer frame 1. Both sides of the outer frame 1 are rotatably connected to a swing frame 5-2 via a rotating shaft. An external gear 5-3 is provided on the upper end of one of the swing frames 5-2. A fixed frame 5-4 is provided on the side surface of the outer frame 1. A control motor 5-5 is installed on the fixed frame 5-4. A drive gear 5-6 is provided at the output end of the control motor 5-5. The drive gear 5-6 meshes with the external gear 5-3. A connecting rod 5-7 is provided on the side end face of the swing frame 5-2. The connecting rod 5-7 is connected to both sides of the mounting frame 3. A support cylinder 5-8 is installed on the other side of the swing frame 5-2.
[0041] In some examples, to achieve the effect of adjustable angle of the main scraper 4-2, an angle adjustment component 5 is designed, including a pair of notches 5-1 on both sides of the outer frame 1. Both sides of the outer frame 1 are rotatably connected to a swing frame 5-2 via a rotating shaft. One swing frame 5-2 has an external gear 5-3 at its upper end. A fixed frame 5-4 is provided on the side surface of the outer frame 1. A control motor 5-5 is installed on the fixed frame 5-4, and its output end is provided with a drive gear 5-6 that meshes with the external gear 5-3. The swing frame 5-2 can be controlled to rotate and adjust the angle. The angle will change, but the blade of the main scraper 4-2 is always in contact with the surface of the drying roller 2. A connecting rod 5-7 connecting the two sides of the mounting frame 3 is provided on the side end face of the swing frame 5-2. A support cylinder 5-8 is installed on the other side of the swing frame 5-2. The output end of the support cylinder 5-8 can press against the surface of the outer frame 1 to reinforce the swing frame 5-2.
[0042] like Figures 1-5 As shown, this embodiment proposes a heat dissipation component 6, which is mounted on the mounting bracket 3. The heat dissipation component 6 includes several external brackets 6-1, and each external bracket 6-1 is equipped with a cooling fan 6-2.
[0043] In some examples, a heat dissipation component 6 is designed to achieve the effect of auxiliary heat dissipation. Multiple external brackets 6-1 are provided on the side surface of the mounting bracket 3. A cooling fan 6-2 is installed on the external bracket 6-1, which can blow towards the main scraper 4-2 to reduce the temperature of the main scraper 4-2.
[0044] For example, such as Figure 1 As shown, a conveyor belt 7 is installed at the bottom of the inner frame 1.
[0045] In some examples, the scraped material can be conveyed outward by a conveyor belt 7.
[0046] For example, such as Figure 3 As shown, the cooling fan 6-2 is located below and between the drying roller 2 and the main scraper 4-2.
[0047] In some examples, by placing a cooling fan 6-2 between the drying roller 2 and the scraper, it can blow air onto both the main scraper 4-2 and the drying roller 2 simultaneously.
[0048] For example, such as Figure 3 As shown, the diaphragm 4-7 has an overall curved structure with an arc transition.
[0049] In some examples, the curved structure ensures that all the material falls onto the conveyor belt 7 and is transported outwards.
[0050] In actual use: Start the dryer to rotate the drying roller 2. When there is slurry on the surface of the drying roller 2, the main scraper 4-2 scrapes off the slurry. The auxiliary scraper holder 4-5 cleans the slurry on the surface of the main scraper 4-2. The rotating roller 4-8 assists in the sliding of the scraped slurry. If the scraper angle needs to be adjusted, the control motor 5-5 drives the drive gear 5-6 to rotate the external gear 5-3, causing the swing frame 5-2 to rotate around the rotation axis. The angle of the main scraper 4-2 on the mounting frame 3 is adjusted by the connecting rod 5-7. The main scraper 4-2 remains in contact with the surface of the drying roller 2. The support cylinder 5-8 provides support and reinforcement. The cooling fan 6-2 dissipates heat from the drying roller 2 and the main scraper 4-2. The scraped slurry falls onto the conveyor belt 7 and is then transported out.
[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A doctor mechanism for a dryer, characterized in that, Include: The outer frame (1) and drying roller (2), the drying roller (2) is rotatably connected inside the outer frame (1); Mounting frame (3) and scraper assembly (4), the mounting frame (3) is arranged inside the outer frame (1), the scraper assembly (4) is arranged on the mounting frame (3); Angle adjusting assembly (5), the angle adjusting assembly (5) is arranged between the mounting frame (3) and the outer frame (1); The scraper assembly (4) includes a connecting cavity (4-1) which is opened in the mounting frame (3), and a main scraper (4-2) is inserted and connected in the connecting cavity (4-1), and a first bolt (4-3) is screwed between the bottom of the mounting frame (3) and the main scraper (4-2).
2. A doctor mechanism for a dryer as defined in claim 1, characterized in that The surface of the main scraper (4-2) is provided with a connecting frame (4-4), the connecting frame (4-4) is inserted and connected with a vice knife frame (4-5), the vice knife frame (4-5) and the connecting frame (4-4) are screwed with a second bolt (4-6), the surface of the mounting frame (3) is provided with a cover (4-7), and a rotating roller (4-8) is rotatably connected in the vice knife frame (4-5).
3. A doctor mechanism for a dryer as defined in claim 1, characterized in that The angle adjusting assembly (5) includes a pair of openings (5-1), the openings (5-1) are opened on both sides of the outer frame (1), and the outer frame (1) is rotatably connected with a swing frame (5-2) through a rotating shaft on both sides, and one of the swing frame (5-2) is provided with an external gear (5-3) on the upper end.
4. A doctor mechanism for a dryer as defined in claim 3, characterized in that The side surface of the outer frame (1) is provided with a fixed frame (5-4), a control motor (5-5) is installed on the fixed frame (5-4), a driving gear (5-6) is arranged on the output end of the control motor (5-5), and the driving gear (5-6) is engaged with the external gear (5-3).
5. A doctor mechanism for a dryer as defined in claim 4, characterized in that The side end face of the swing frame (5-2) is provided with a connecting rod (5-7), the connecting rod (5-7) is connected on both sides of the mounting frame (3), and a supporting air cylinder (5-8) is installed on the other side of the swing frame (5-2).
6. A doctor mechanism for a dryer as defined in claim 1, wherein It also includes a heat dissipation assembly (6), the heat dissipation assembly (6) is arranged on the mounting frame (3), and the heat dissipation assembly (6) includes a plurality of external frames (6-1), and a heat dissipation fan (6-2) is installed on each of the external frames (6-1).
7. A doctor mechanism for a dryer as defined in claim 1, wherein The inner bottom of the outer frame (1) is provided with a conveying belt (7).
8. A doctor mechanism for a dryer as defined in claim 6, wherein The heat dissipation fan (6-2) is located below the drying roller (2) and the main scraper (4-2).
9. A doctor mechanism for a dryer as defined in claim 2, wherein The cover (4-7) is a curved structure with arc transition as a whole.