Wall scraping device for sand mixer
Patent Information
- Application Number
- CN202522594502.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-08
AI Technical Summary
[0002]混砂机是使型砂中各组分均匀混合，并使黏结剂有效地包覆在砂粒表面的设备，在混砂机的工作过程中，混砂机的混砂筒和混砂辊会进行相向转动，以达到更好的混砂效果，然而，混砂筒中的物料会因为离心力或黏结剂的作用下，在混砂过程中贴合在混砂筒的内壁中，不参与混料，导致混料不均，传统的混砂设备往往缺少相关的刮板装置，或者固定设置刮板装置，缺少灵活性
[0007]本实用新型的有益效果是：通过可翻转的壁刮板和底刮板，能够调整刮板与混砂桶内壁的角度进行刮料，确保物料能够充分参与混合，从而提高混合的均匀性。
Smart Images
Figure CN224895656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand mixer technology, and in particular to a scraper device for the inner wall of a sand mixer. Background Technology
[0002] A sand mixer is a device that uniformly mixes the components in molding sand and effectively coats the sand particles with binder. During the operation of the sand mixer, the mixing cylinder and mixing roller rotate in opposite directions to achieve a better mixing effect. However, due to centrifugal force or the action of binder, the material in the mixing cylinder may adhere to the inner wall of the mixing cylinder during the mixing process and not participate in the mixing, resulting in uneven mixing. Traditional sand mixing equipment often lacks related scraper devices or has fixed scraper devices, which lacks flexibility. Utility Model Content
[0003] In order to overcome the shortcomings of the existing problems mentioned above, this utility model provides a scraper device for the inner wall of a sand mixer, which can effectively remove materials adhering to the inner wall of the mixing cylinder and can be adjusted according to the usage conditions.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a scraper device for the inner wall of a sand mixer, including a sand mixer, the sand mixer including a sand mixing barrel, a supporting crossbeam provided above the sand mixing barrel, a supporting seat provided on one side of the supporting crossbeam, and a support plate provided on the supporting seat; a bushing provided on the support plate, a rotating shaft provided inside the bushing, and a hydraulic cylinder cantilever provided on one side of the bushing; a scraper column connected to the bottom of the rotating shaft, and a crank assembly provided at the top of the rotating shaft; the scraper column is provided in the sand mixing barrel, a wall scraper is provided on the side of the scraper column, and a bottom scraper is provided at the bottom, forming an L-shaped structure; a hydraulic cylinder and a hydraulic cylinder support are provided on the hydraulic cylinder cantilever, the hydraulic cylinder support is provided at the end of the hydraulic cylinder cantilever, the bottom end of the hydraulic cylinder is hinged to the hydraulic cylinder support, and the movable end of the hydraulic cylinder is hinged to the crank assembly.
[0005] Preferably, the end of the wall scraper abuts against the inner wall of the mixing bucket, and the apex of the wall scraper abutting against the mixing bucket is flush with the axis of the rotating shaft.
[0006] Preferably, the bottom scraper is configured with an arc-shaped structure.
[0007] The beneficial effects of this utility model are: by using the reversible wall scraper and bottom scraper, the angle between the scraper and the inner wall of the mixing bucket can be adjusted to scrape the material, ensuring that the material can fully participate in the mixing, thereby improving the uniformity of the mixing. Attached Figure Description
[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0009] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the scraper column; Figure 3 This is a schematic diagram of the bushing structure; Figure 4 This is a side view diagram of the bushing structure. Figure 5 yes Figure 2 Structural cross-sectional view at point AA; Figure 6 This is a top view of the initial structure of the wall scraper; Figure 7 This is a top view of the wall scraper after it has been flipped over; Figure 8 This is a top view of the scraper column structure. In the diagram, 1 is the sand mixing bucket; 2 is the support crossbeam; 3 is the support base; 31 is the support plate; 4 is the bushing; 5 is the rotating shaft; 6 is the hydraulic cylinder cantilever; 7 is the scraper column; 71 is the wall scraper; 72 is the bottom scraper; 8 is the crank assembly; 9 is the hydraulic cylinder; and 10 is the hydraulic cylinder support. Detailed Implementation
[0010] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.
[0011] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0012] according to Figures 1-8As shown, a scraper 71 device for the inner wall of a sand mixer includes a sand mixer, which includes a sand mixing drum 1. A supporting crossbeam 2 is provided above the sand mixing drum 1, and a supporting seat 3 is provided on one side of the supporting crossbeam 2. A support plate 31 is provided on the supporting seat 3. A bushing 4 is provided on the support plate 31, and a rotating shaft 5 is provided inside the bushing 4. A hydraulic cylinder cantilever 6 is provided on one side of the bushing 4. A scraper column 7 is connected to the bottom of the rotating shaft 5, and a crank assembly 8 is also provided at the top of the rotating shaft 5. The scraper column 7 is located in the sand mixing drum 1. In actual operation, the centerline of the rotating shaft 5 corresponds to the position of the inner wall of the sand mixing drum 1. The scraper column 7 and the rotating shaft are connected. 5. The bottom is set with a certain eccentricity so that the scraper column 7 is offset from the axis of the rotating shaft 5. Then, the wall scraper 71 set on the scraper column 7 is flush with the axis of the rotating shaft 5. The wall scraper 71 is always in contact with the inner wall of the mixing bucket 1 to scrape the material during the rotation. The side of the scraper column 7 is provided with the wall scraper 71 and the bottom is provided with the bottom scraper 72, forming an L-shaped structure. The cylinder arm 6 is provided with the cylinder 9 and the cylinder support 10. The cylinder support 10 is located at the end of the cylinder arm 6. The bottom end of the cylinder 9 is hinged to the cylinder support 10. The movable end of the cylinder 9 is hinged to the crank assembly 8.
[0013] The end of the wall scraper 71 abuts against the inner wall of the sand mixing drum 1. The apex of the wall scraper 71 abutting against the sand mixing drum 1 is flush with the axis of the rotating shaft 5, so that the wall scraper 71 always abuts against the inner wall of the sand mixing drum 1 to scrape the material during the rotation process.
[0014] The bottom scraper 72 is configured with an arc-shaped structure.
[0015] During operation, the sand mixing drum 1 rotates clockwise, while the sand mixing rollers in the sand mixer rotate in the opposite direction to achieve uniform mixing of materials. In the initial stage of mixing, the wall scraper 71 remains in its initial state with a small angle between it and the inside of the sand mixing drum 1, while the bottom scraper 72 is closer to the edge of the sand mixing drum 1. In this state, while scraping the material from the inner wall, the resistance generated by the wall scraper 71 and the bottom scraper 72 during mixing is reduced, adapting to the initial mixing state and allowing the material to be mixed quickly and initially. As mixing progresses, the sand and binder gradually mix, increasing the viscosity of the material and making it easier to adhere to the inner wall of the sand mixing drum 1. During the sand mixing process, the hydraulic cylinder 9 is activated, driving the rotating shaft 5 to rotate through the crank assembly 8, thereby driving the scraper column to rotate and causing the wall scraper 71 and the bottom scraper 72 to flip. The angle between the wall scraper 71 and the inner wall of the sand mixing drum 1 increases, and the bottom scraper 72 extends further into the center of the sand mixing drum 1, thereby increasing the scraping area. This ensures the uniformity and efficiency of the mixing process.
[0016] This design is ingenious. Through the flip-up wall scraper and bottom scraper, the angle between the scraper and the inner wall of the mixing drum can be adjusted according to the different needs of the mixing stage. In the early stage of mixing, the scraper angle is smaller to reduce resistance and adapt to the rapid initial mixing of materials. As the viscosity of the material increases, the scraper angle increases to increase the material hanging area, ensuring that the material can be fully mixed and effectively preventing the material from adhering to the inner wall of the mixing drum. This ensures that the material can fully participate in the mixing, thereby improving the uniformity of the mixing.
[0017] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.
Claims
1. A scraper device for the inner wall of a sand mixer, characterized in that: The equipment includes a sand mixer, which includes a sand mixing drum (1), a supporting crossbeam (2) above the sand mixing drum (1), a supporting seat (3) on one side of the supporting crossbeam (2), and a support plate (31) on the support seat (3); a bushing (4) is provided on the support plate (31), a rotating shaft (5) is provided inside the bushing (4), and a hydraulic cylinder cantilever (6) is provided on one side of the bushing (4); a scraper column (7) is connected to the bottom of the rotating shaft (5), and a crank sleeve is also provided at the top of the rotating shaft (5). Component (8); The scraper column (7) is set in the sand mixing bucket (1), the side of the scraper column (7) is provided with a wall scraper (71), and the bottom is provided with a bottom scraper (72), forming an L-shaped structure; The cylinder arm (6) is provided with a cylinder (9) and a cylinder support (10), the cylinder support (10) is set at the end of the cylinder arm (6), the bottom end of the cylinder (9) is hinged to the cylinder support (10), and the movable end of the cylinder (9) is hinged to the crank assembly (8).
2. The scraper device for the inner wall of the sand mixer according to claim 1, characterized in that: The end of the wall scraper (71) abuts against the inner wall of the sand mixing bucket (1), and the vertex of the wall scraper (71) abutting against the sand mixing bucket (1) is flush with the axis of the rotating shaft (5).
3. The scraper device for the inner wall of the sand mixer according to claim 1, characterized in that: The bottom scraper (72) is configured with an arc-shaped structure.