Anti-blocking scraper for flour roller screen

Abstract

This utility model relates to the field of scraper technology and discloses an anti-clogging scraper for powder drum screens. It includes two mounting plates, with a connecting plate fixedly connected to the top of each mounting plate. Adaptive disassembly and assembly mechanisms are fixedly connected to the front and rear sides of the top of the connecting plate. Adjustment mechanisms are fixedly connected to the front and rear sides of the exterior of each mounting plate. The adaptive disassembly and assembly mechanism includes a mounting housing, the exterior of which is fixedly connected to the interior of the connecting plate. A limiting plate is slidably connected inside the mounting housing. In this utility model, during scraping, the scraper, through a support plate, drives the limiting plate to press against the telescopic rod and mounting spring, enabling adaptive scraping. During disassembly and assembly, pulling the sliding lever compresses the limiting plate and reset spring, separating the scraper. During installation, the spring rebounds and locks the scraper. This adaptive design ensures effective scraping, and the convenient disassembly and assembly facilitates maintenance and replacement, improving the efficiency and flexibility of scraping operations.

Description

Technical Field

[0001] This utility model relates to the field of scraper technology, and in particular to an anti-clogging scraper for powder drum screens. Background Technology

[0002] The scraper is a component installed inside the screening equipment to remove residual material from the screen surface. It is usually made of wear-resistant rubber or metal and scrapes the screen synchronously with the operation of the equipment. It has the characteristics of high cleaning efficiency and low risk of damaging the screen. Its core function is to solve the problem of material clogging the screen holes during the screening process. It is closely related to the anti-clogging requirements of powder drum screens. Powder materials are fine particles and easy to be adsorbed. During drum screen screening, clogging often occurs due to material adhering to the screen holes, which affects the screening efficiency. The scraper is the key to ensuring the smooth operation of the drum screen.

[0003] In the prior art, some anti-clogging scrapers of powder drum screens move synchronously with the drum or remain in a fixed position. The scraping end with a certain hardness and a specific angle will be in close contact with the inner surface of the screen. During the rotation of the drum, the scraper will continuously scrape the powder adhering to the screen surface, break the adhered powder layer and make it re-participate in the screening process. At the same time, it will squeeze or peel off the powder particles stuck in the screen holes to ensure that the screen holes always remain unobstructed.

[0004] However, in actual use, powders are prone to adhering to the edges of the screen holes due to their properties such as humidity, static electricity, and particle adhesion. If the scraper plate has a fixed force, it cannot completely remove the blocked powder, and the screen holes will gradually become clogged. The powder that could originally pass through will be blocked, and the effective screening area of ​​the drum screen will drop rapidly from the initial value, eventually leading to a significant reduction in the screening volume per unit time. In response to the above problems, an anti-clogging scraper plate for powder drum screens is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an anti-clogging scraper for powder drum screens, which aims to improve the problem that some anti-clogging scrapers for powder drum screens in the prior art are difficult to perform adaptive scraping during operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The anti-clogging scraper for powder drum screen includes two mounting plates. A connecting plate is fixedly connected to the top of the mounting plate. An adaptive disassembly and assembly mechanism is fixedly connected to the front and rear sides of the top of the connecting plate. An adjustment mechanism is fixedly connected to the front and rear sides of the outside of the mounting plate. The adaptive disassembly and assembly mechanism includes a mounting housing, the outside of which is fixedly connected to the inside of the connecting plate. A first limiting plate is slidably connected inside the mounting housing. A reset component is fixedly connected to the bottom of the first limiting plate. Support plates are fixedly connected to the front and rear sides of the top of the first limiting plate. A sliding lever is slidably connected to the outside of the support plate. A cavity is opened on the outside of the support plate. A second limiting plate is slidably connected to the outside of the cavity. A reset spring is sleeved on the outside of the sliding lever. A scraper plate body is fixedly connected to the outside of the two support plates. As a further description of the above technical solution: The reset assembly includes a telescopic rod, which is externally fixedly connected to the bottom of the limiting plate, and a mounting spring is sleeved on the outside of the telescopic rod. As a further description of the above technical solution: A connecting block is slidably connected to the outer side of the scraper body, and the outer side of the support plate is slidably connected to the inside of the mounting housing. As a further description of the above technical solution: The inner part of the limiting plate 2 is fixedly connected to the outer part of the sliding clamp, and the outer part of the sliding clamp is locked with the outer part of the scraper plate body; As a further description of the above technical solution: The adjustment mechanism includes a mounting frame, which is fixedly connected to the front and rear sides of the mounting plate. A connecting shaft is fixedly connected inside the mounting frame. A rotating plate is rotatably connected to the outside of the connecting shaft. A positioning rod is fixedly connected to the rotating plate. Multiple telescopic rods are fixedly connected to the outside of the rotating plate. Tension springs are sleeved on the outside of the telescopic rods. As a further description of the above technical solution: Two mounting plates are slidably connected to each other on their adjacent sides, and multiple slots are provided on the front and rear sides of the mounting blocks. As a further description of the above technical solution: The outside of the positioning rod is engaged with the outside of the slot, and the outside of the rotating plate is rotatably connected to the outside of the mounting bracket; As a further description of the above technical solution: One end of the tension spring is fixedly connected to the outside of the mounting plate, and the other end of the tension spring is fixedly connected to the outside of the rotating plate.

[0007] This utility model has the following beneficial effects: 1. In this utility model, when scraping material, the scraper plate drives the limiting plate through the support plate to squeeze the telescopic rod and the installation spring, which can adaptively scrape material. When disassembling and assembling, the sliding latch is pulled to compress the limiting plate and reset the spring, which can separate the scraper plate. When installing, the spring rebounds and locks in place. The adaptive design ensures the scraping effect. Disassembly and assembly are convenient for maintenance and replacement, improving the efficiency and flexibility of scraping operations.

[0008] 2. In this utility model, pressing and rotating the clamping plate squeezes the telescopic rod and tension spring, causing the positioning clamping rod to disengage from the slot. The mounting plate can be pulled along the mounting block to adjust the length. After adjustment, the clamping plate is released, and the spring rebounds to lock the clamping rod into the slot for fixation. The adjustment operation is simple, and the tension spring ensures a secure clamping. It can flexibly adapt to different installation needs, improving the applicability and ease of operation of the mounting plate. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of the anti-clogging scraper for powder drum screens proposed in this utility model; Figure 2 This is a schematic diagram of the scraper body of the anti-clogging scraper for powder drum screens proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0010] Legend: 1. Mounting plate; 2. Connecting plate; 3. Adaptive disassembly and assembly mechanism; 31. Mounting housing; 32. Limiting plate one; 33. Reset assembly; 331. Telescopic rod one; 332. Mounting spring; 34. Support plate; 35. Sliding lever; 36. Cavity; 37. Limiting plate two; 38. Reset spring; 39. Scraper body; 310. Connecting block; 4. Adjustment mechanism; 41. Mounting bracket; 42. Connecting shaft; 43. Rotating clamping plate; 44. Positioning lever; 45. Telescopic rod two; 46. Tension spring; 47. Mounting block; 48. Slot. Detailed Implementation

[0011] 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.

[0012] Reference Figures 1 to 3This utility model provides an embodiment of an anti-clogging scraper for powder drum screens, comprising two mounting plates 1. The mounting plates 1 serve as the basic load-bearing components of the entire scraper device, providing an installation reference for each functional mechanism. Sufficient thickness ensures that the scraper does not deform during the scraping process. A connecting plate 2 is fixedly connected to the top of the mounting plates 1, connecting the two mounting plates 1 into an integral frame, enhancing structural rigidity and ensuring uniform force during scraping. Adaptive disassembly and assembly mechanisms 3 are fixedly connected to the front and rear sides of the top of the connecting plate 2. Adjustment mechanisms 4 are fixedly connected to the front and rear sides of the exterior of the mounting plates 1. The adjustment mechanism 4 includes a mounting frame 41, which provides stable support for other components of the adjustment mechanism. The U-shaped structure forms a stable rotation fulcrum. The exterior of the mounting frame 41 is fixedly connected to the front and rear sides of the exterior of the mounting plate 1. A connecting shaft 42 is fixedly connected inside the mounting frame 41, providing a rotation center for the rotating clamping plate 43. High-strength material ensures that it can withstand the torque during adjustment. Specifically, the mounting plate 1 stabilizes the material scraper to prevent deformation, the connecting plate 2 connects the two plates to enhance rigidity and distribute force evenly, the self-adaptive disassembly mechanism 3 assists in loading and unloading, the mounting frame 41 in the adjustment mechanism 4 stabilizes the components, the connecting shaft 42 provides the rotating clamp 43 with torque bearing, the overall structure is a stable frame, easy to adjust and load and unload, ensures reliable material scraping, and improves the anti-clogging effect of the drum screen.

[0013] A rotating clamping plate 43 is rotatably connected to the external of the connecting shaft 42. The rotating clamping plate 43 rotates around the connecting shaft to switch the position of the positioning clamping rod 44. The arc design adapts to the adjustment trajectory. Bronze bearings reduce rotational resistance, making adjustment easier. The rotating clamping plate 43 is fixedly connected to the positioning clamping rod 44. The positioning clamping rod 44 fixes the gap of the scraper plate by inserting into positioning holes at different positions. The tapered end facilitates quick alignment and insertion. Quenching treatment enhances wear resistance and extends the service life of frequent insertion and removal. Multiple telescopic rods 45 are fixedly connected to the external of the rotating clamping plate 43. The telescopic rods 45 provide guidance for the tension spring 46 to ensure that the spring does not bend sideways when it extends or retracts. A dustproof ring prevents powder from entering the sleeve and causing jamming. To adapt to the working environment of powdery materials, a tension spring 46 is sleeved on the external of the telescopic rods 45. The tension spring 46 provides continuous tension to the rotating clamping plate 43, keeping the positioning clamping rod 44 in a locked state and preventing positioning loosening due to vibration during equipment operation. Specifically, rotating the card plate 43 around the connecting shaft 42 allows the positioning rod 44 to switch positions. The bronze bearing reduces drag and saves effort. The positioning rod 44 is easy to insert and wear-resistant, thus fixing the gap of the scraper plate. The telescopic rod 45 guides the tension spring 46 to prevent side bending and dust. The tension spring 46 keeps the rod locked and prevents loosening. The whole system allows for easy gap adjustment, adapts to powder environments, and ensures stable operation of the equipment.

[0014] The adaptive disassembly and assembly mechanism 3 includes a mounting housing 31, which provides a closed installation space for internal components to prevent powder materials from entering and causing jamming. Made of stainless steel, it is corrosion-resistant and adaptable to humid environments. The mounting housing 31 is externally fixedly connected to the interior of the connecting plate 2. A limiting plate 32 is slidably connected inside the mounting housing 31. The limiting plate 32 is a core component connecting the reset assembly 33 and the support plate 34. Sliding within the mounting housing 31 provides elastic buffering for the scraper, and high-precision fitting ensures smooth, jam-free sliding. The bottom of the limiting plate 32 is fixedly connected to the reset assembly 33, which includes a telescopic rod 331. The telescopic rod 331 is used for mounting... Spring 332 provides guidance to ensure axial movement during extension and retraction, preventing lateral bending failure. Dustproof sealing ring prevents powder from entering the sleeve and avoids jamming that could affect the extension and retraction function. The external fixed connection of extension rod 331 is to the external bottom of limit plate 32. The external sleeve of extension rod 331 is fitted with installation spring 332, which provides continuous upward elastic force to limit plate 32, ensuring that the scraper always fits against the drum screen and ensuring scraping effect. Support plates 34 are fixedly connected to the front and rear sides of the external top of limit plate 32. Support plates 34 provide installation support for sliding clamp 35. The L-shaped structure saves space and facilitates force transmission. The rounded corners prevent scratching personnel during operation. Specifically, the housing 31 prevents powder from entering and is corrosion-resistant, making it suitable for powdery environments. The limiting plate 32 provides elastic cushioning and stable sliding. The telescopic rod 331 in the reset assembly has a guide spring to prevent side bending and dust. The mounting spring 332 ensures the scraper plate adheres to the screen. The support plate 34 has clamping rods that save space and prevent scratches. The entire assembly is easy to disassemble and assemble, ensuring scraping effect and improving the equipment's applicability in powdery environments.

[0015] A sliding latch 35 is slidably connected to the outside of the support plate 34. The sliding latch 35 enables the clamp head to quickly engage or disengage from the drum screen mounting hole by sliding. The T-shaped structure facilitates operation and adjustment by the operator. A cavity 36 is provided on the outside of the support plate 34. The cavity 36 provides sliding space for the second limiting plate 37 and limits its range of motion to prevent the second limiting plate 37 from sliding excessively and causing the return spring 38 to fall off. The second limiting plate 37 is slidably connected to the outside of the cavity 36. The second limiting plate 37 is used to limit the sliding stroke of the sliding latch 35 to prevent the clamp head from extending or retracting excessively. The sliding lever 35 is fitted with a return spring 38, which provides a continuous clamping force to the sliding lever 35, ensuring that the clamp head is always in a clamping state when there is no external force, which facilitates quick installation. The moderate elasticity design balances the clamping reliability and the ease of operation, ensuring that the installation is stable and that the handle can be easily pulled to unlock. The two support plates 34 are externally fixedly connected to the scraper plate body 39, which is the part that directly contacts the drum screen. Through the thin blade structure, it efficiently scrapes away the powdery materials adhering to the screen surface and prevents the screen holes from being blocked. Specifically, the sliding lever 35 quickly locks and separates, the cavity 36 and the limiting plate 37 limit the sliding of the components to prevent them from falling off, the reset spring 38 is sleeved on the outside of the lever and is locked and easy to operate, the scraper body 39 has a thin blade for efficient powder removal and anti-clogging, and combined with the original components, the whole is easier to disassemble and assemble, ensuring the scraping and installation are stable, and further improving the applicability to powder environments.

[0016] Reference Figures 2 to 4 A connecting block 310 is slidably connected to the outer side of the scraper body 39. The outer side of the support plate 34 is slidably connected to the inside of the mounting housing 31. The inner side of the limiting plate 37 is fixedly connected to the outer side of the sliding rod 35. The outer side of the sliding rod 35 is locked to the outer side of the scraper body 39. A mounting block 47 is slidably connected to the outer side of the two mounting plates 1. The mounting block 47 serves as the moving end of the adjustment mechanism. It slides with the mounting plate 1 through a dovetail groove to achieve fine adjustment of the lateral position of the scraper. Multiple slots 48 are provided on the front and rear sides of the outer side of the mounting block 47. The slot 48 is a semi-circular groove with a radius that matches the diameter of the positioning rod 44. It is evenly distributed along the sliding direction of the mounting block 47. The groove opening is rounded and the groove wall is hardened. The densely distributed slots 48 provide multiple adjustment options for the positioning rod 44, enabling precise control of the scraper position. The outside of the positioning rod 44 is locked with the outside of the slot 48. The outside of the rotating plate 43 is rotatably connected to the outside of the mounting bracket 41. One end of the tension spring 46 is fixedly connected to the outside of the mounting plate 1, and the other end of the tension spring 46 is fixedly connected to the outside of the rotating plate 43. Specifically, the limiting plate 37 is connected with the clamping rods; the mounting block 47 is finely adjusted laterally via the dovetail groove; the clamping groove 48 has multiple positions to adapt to the clamping rods for precise positioning; the tension spring 46 is connected to the clamping plate through the connecting plate to stabilize the structure; the overall strong components work together to achieve fine adjustment of the scraper, ensure stable installation, and improve anti-blocking efficiency.

[0017] Working principle: During operation, when the scraper body 39 scrapes material, the scraper body 39, through the support plate 34, drives the limiting plate 32 to slide inside the mounting housing 31. This allows the limiting plate 32 to press against the telescopic rod 331, causing the mounting spring 332 outside the telescopic rod 331 to deform. This allows the scraper body 39 to adapt to scraping. When disassembling or assembling the scraper body 39, pulling the sliding latch 35 causes the limiting plate 37 to slide inside the cavity 36. This allows the limiting plate 37 to press against the sliding latch 35. The external return spring 38 is compressed, which causes the return spring 38 to deform, which in turn causes the sliding latch 35 to separate from the scraper body 39, which in turn causes the scraper body 39 to separate from the support plate 34, thus enabling the scraper body 39 to be disassembled. When installing the scraper body 39, the scraper body 39 is placed inside the support plate 34, and then the sliding latch 35 is released, causing the external return spring 38 of the sliding latch 35 to spring back, which in turn causes the sliding latch 35 to lock with the scraper body 39, thus enabling the scraper body 39 to be installed. When adjusting the length of the mounting plate 1, pressing the rotating plate 43 causes it to compress the telescopic rod 45, which in turn causes the tension spring 46 outside the telescopic rod 45 to deform. This causes the rotating plate 43 to separate the positioning rod 44 from the slot 48 outside the mounting block 47, allowing the mounting plate 1 to slide outside the mounting block 47, thus adjusting the length of the mounting plate 1. After adjustment, releasing the rotating plate 43 causes the tension spring 46 outside the telescopic rod 45 to rebound, which in turn causes the rotating plate 43 to lock the positioning rod 44 into the slot 48 outside the mounting block 47, thus adjusting the length of the mounting plate 1.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder drum screen anti-clogging scraper, comprising two mounting plates (1), characterized in that: The top of the mounting plate (1) is fixedly connected to a connecting plate (2), and the front and rear sides of the top of the connecting plate (2) are fixedly connected to an adaptive disassembly and assembly mechanism (3). The front and rear sides of the outside of the mounting plate (1) are fixedly connected to an adjustment mechanism (4). The adaptive disassembly and assembly mechanism (3) includes a mounting housing (31), the outside of which is fixedly connected to the inside of the connecting plate (2). A limiting plate (32) is slidably connected inside the mounting housing (31). A reset component (33) is fixedly connected to the bottom outside of the limiting plate (32). Support plates (34) are fixedly connected to the front and rear sides of the top outside of the limiting plate (32). A sliding lever (35) is slidably connected to the outside of the support plate (34). A cavity (36) is opened outside the support plate (34). A limiting plate (37) is slidably connected to the outside of the cavity (36). A reset spring (38) is sleeved on the outside of the sliding lever (35). A scraper plate body (39) is fixedly connected to the outside of the two support plates (34).

2. The anti-clogging scraper for powder drum screens according to claim 1, characterized in that: The reset assembly (33) includes a telescopic rod (331), which is externally fixedly connected to the bottom of the limiting plate (32), and a mounting spring (332) is sleeved on the outside of the telescopic rod (331).

3. The anti-clogging scraper for powder drum screens according to claim 2, characterized in that: The two scraper bodies (39) are slidably connected to a connecting block (310) on their outer adjacent sides, and the support plate (34) is slidably connected to the interior of the mounting housing (31).

4. The anti-clogging scraper for powder drum screens according to claim 3, characterized in that: The inner part of the limiting plate 2 (37) is fixedly connected to the outside of the sliding clamp (35), and the outside of the sliding clamp (35) is locked with the outside of the scraper plate body (39).

5. The anti-clogging scraper for powder drum screens according to claim 1, characterized in that: The adjustment mechanism (4) includes a mounting bracket (41), which is externally fixedly connected to the front and rear sides of the mounting plate (1). A connecting shaft (42) is fixedly connected inside the mounting bracket (41). A rotating plate (43) is rotatably connected to the outside of the connecting shaft (42). A positioning rod (44) is fixedly connected to the rotating plate (43). Multiple telescopic rods (45) are fixedly connected to the outside of the rotating plate (43). Tension springs (46) are sleeved on the outside of the telescopic rods (45).

6. The anti-clogging scraper for powder drum screens according to claim 5, characterized in that: Mounting blocks (47) are slidably connected to the adjacent sides of the two mounting plates (1), and multiple slots (48) are provided on the front and rear sides of the outer side of the mounting blocks (47).

7. The anti-clogging scraper for powder drum screens according to claim 6, characterized in that: The outside of the positioning rod (44) is locked with the outside of the slot (48), and the outside of the rotating plate (43) is rotatably connected to the outside of the mounting bracket (41).

8. The anti-clogging scraper for powder drum screens according to claim 5, characterized in that: One end of the tension spring (46) is fixedly connected to the outside of the mounting plate (1), and the other end of the tension spring (46) is fixedly connected to the outside of the rotating plate (43).

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