Stirring and scraping device of sand mixer
By designing a stirring and scraping device with inclined stirring plate, scraper, guide plate and limiting mechanism in the sand mixer, the problems of uneven material mixing and sticking of the inner wall of the stirring barrel in the prior art are solved, and the quality of the molded sand and the performance of the casting parts are improved.
Patent Information
- Application Number
- CN202420867958.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During the mixing process, the mixing and scraping device of the existing sand mixing machine has problems such as uneven material mixing and sticking materials on the inner wall of the mixing barrel, which leads to unstable quality of the molded sand and affects the quality of the casting parts.
A stirring scraper device including an inclined stirring plate, a scraper, a guide plate and a limiting mechanism is designed. The inclined stirring plate promotes the up and downward undulation of the material, and the scraper scrapes off the material adhered to the inner wall, and the guide plate and the limiting mechanism are used to control the discharge.
Through the design of the inclined stirring plate, the mixing uniformity and mixing efficiency of materials are significantly improved; the use of scrapers avoids material waste and proportional errors; the coordination of the guide plate and the limiting mechanism ensures the convenience and accuracy of material discharge.
Smart Images
Figure CN222588030U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sand mixers, in particular to a stirring and scraping device of a sand mixer. Background Art
[0002] In the casting process, the sand mixer is a key equipment to ensure the quality of the molding sand. Its main function is to evenly mix the various components in the molding sand and effectively coat the binder on the surface of the sand particles.
[0003] The current sand mixer stirring and scraping device often has problems such as uneven material mixing and material sticking to the inner wall of the mixing barrel during the stirring process, which leads to unstable molding sand quality and affects the quality of castings. Utility Model Content
[0004] In order to overcome the above-mentioned shortcomings, the utility model provides a stirring and scraping device for a sand mixer.
[0005] The technical solution adopted by this utility model:
[0006] A stirring and scraping device for a sand mixer comprises a stirring barrel, wherein three legs are fixedly connected to the bottom of the stirring barrel, and the legs are distributed in an equilateral triangle, a top cover is fixedly connected to the top of the stirring barrel, and three feeding pipes are fixedly connected to the top of the top cover, and the three feeding pipes are respectively connected to the inside of the stirring barrel, a motor is fixedly connected to the upper center of the top cover, and the motor output shaft passes through the upper center of the top cover, and the motor output shaft is rotatably connected to the top cover, and a rotating shaft is fixedly connected to the bottom end of the motor output shaft, and the bottom end of the rotating shaft is rotatably connected to the center of the inner bottom wall of the stirring barrel, and two stirring plates are fixedly connected to the outer wall of the rotating shaft, and the stirring plates are inclined counterclockwise from the top along the outer wall of the rotating shaft, and the two stirring plates are symmetrically distributed in the center, and two fixing rods are fixedly connected to the middle of the outer wall of the rotating shaft, and the two fixing rods are symmetrically distributed and located between the two stirring plates. A scraper is fixedly connected to the end, the outer wall of the scraper is arc-shaped and fits with the inner wall gap of the mixing barrel, a discharge hole is opened on the front side of the bottom of the mixing barrel, the discharge hole is fan-shaped, and two side panels are fixedly connected to the bottom of the mixing barrel, the two side panels are symmetrically located on the left and right sides of the bottom of the discharge hole, the side panels are right-angled triangles, and the hypotenuses of the side panels face downward, and the bottom hypotenuses of the two side panels are fixedly connected with supporting edges relative to the side walls, and a guide plate is provided between the two side panels, the bottom sides of the guide plate are overlapped on the upper part of the supporting edges, and the rear side of the guide plate is rotatably connected to the bottom of the mixing barrel, the guide plate is located below the discharge hole, and the two sides of the guide plate are respectively matched with the gaps of the two side plates, the top of the front side wall of the guide plate is fixedly connected to the bottom of the handle frame, the handle frame is rectangular, and the front side wall of the mixing barrel is fixedly connected to a limiting mechanism, and the limiting mechanism is rotatably engaged with the handle frame.
[0007] The limiting mechanism includes two fixed plates, which are parallely and vertically fixedly connected to the front side wall of the mixing barrel. A support shaft is rotatably connected between the front ends of the two fixed plates. A buckle plate is fixedly connected to the outer wall of the support shaft. The lower end of the buckle plate is bent inward by ninety degrees. Torsion springs are sleeved on the outer walls of both ends of the support shaft. The two ends of the torsion spring are respectively fixedly connected to the inner wall of the fixed plate and the outer wall of the buckle plate.
[0008] The upper part of the mixing barrel and the edge of the top cover are respectively provided with a flange plate 1 and a flange plate 2, the flange plate 1 and the flange plate 2 are penetrated by bolts, the bottom of the bolts are provided with nuts, and the flange plate 1 and the flange plate 2 are fixed by the bolts and the nuts.
[0009] Beneficial effects of the utility model:
[0010] The utility model greatly promotes the up and down mixing of materials through the inclined stirring plate, and can ensure that the materials are fully mixed in the stirring barrel, thereby improving the mixing uniformity and mixing efficiency. The scraper can effectively scrape off the materials adhering to the inner wall of the stirring barrel, which not only avoids the waste of materials but also ensures the accuracy of the proportion of the mixture. Through the design of the guide plate and the limit mechanism, the discharge of materials can be conveniently controlled as needed. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the utility model;
[0012] Figure 2 It is a schematic diagram of the bottom perspective of the utility model;
[0013] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0014] Figure 4 It is a cross-sectional view of the utility model;
[0015] Figure 5 It is a schematic diagram of the interior of the mixing barrel of the utility model.
[0016] The specific reference numerals in all the drawings are: 1. mixing barrel; 2. support leg; 3. top cover; 4. feed pipe; 5. motor; 6. rotating shaft; 7. stirring plate; 8. fixing rod; 9. scraper; 10. discharge hole; 11. side plate; 12. support edge; 13. guide plate; 14. handle frame; 15. fixing plate; 16. support shaft; 17. buckle plate; 18. torsion spring; 19. flange one; 20. flange two; 21. bolt. DETAILED DESCRIPTION
[0017] like Figure 1-5As shown: a stirring and scraping device of a sand mixer comprises a stirring barrel 1, three legs 2 are fixedly connected to the bottom of the stirring barrel 1, and the legs 2 are distributed in an equilateral triangle. A top cover 3 is fixedly connected to the top of the stirring barrel 1, and three feeding pipes 4 are fixedly connected to the top of the top cover 3, and the three feeding pipes 4 are respectively connected to the inside of the stirring barrel 1, and a motor 5 is fixedly connected to the upper center of the top cover 3. The output shaft of the motor 5 runs through the upper center of the top cover 3, and the output shaft of the motor 5 is rotatably connected to the top cover 3. The bottom end of the output shaft of the motor 5 is fixedly connected to a rotating shaft 6, and the bottom end of the rotating shaft 6 is rotatably connected to the center of the inner bottom wall of the stirring barrel 1, and two stirring plates 7 are fixedly connected to the outer wall of the rotating shaft 6, and the stirring plates 7 are inclined counterclockwise from the top along the outer wall of the rotating shaft 6, and the two stirring plates 7 are symmetrically distributed in the center, and two fixing rods 8 are fixedly connected to the middle of the outer wall of the rotating shaft 6, and the two fixing rods 8 are symmetrically distributed and located between the two stirring plates 7, and the outer end of the fixing rod 8 is fixedly connected to a scraper 9 The outer wall of the scraper 9 is arc-shaped and has a clearance with the inner wall of the mixing barrel 1. A discharge hole 10 is opened on the front side of the bottom of the mixing barrel 1. The discharge hole 10 is fan-shaped. Two side plates 11 are fixedly connected to the bottom of the mixing barrel 1. The two side plates 11 are symmetrically located on the left and right sides of the bottom of the discharge hole 10. The side plates 11 are right-angled triangles, and the hypotenuses of the side plates 11 face downward. The opposite side walls of the bottom hypotenuses of the two side plates 11 are fixedly connected with support edges 12. A guide plate 13 is provided between the two side plates 11. The bottom sides of the guide plate 13 are overlapped on the upper part of the support edge 12. The rear side of the guide plate 13 is rotatably connected to the bottom of the mixing barrel 1. The guide plate 13 is located below the discharge hole 10. The two sides of the guide plate 13 are respectively matched with the two side plates 11. The top of the front side wall of the guide plate 13 is fixedly connected to the bottom of the handle frame 14. The handle frame 14 is rectangular. The front side wall of the mixing barrel 1 is fixedly connected to a limiting mechanism, and the limiting mechanism is rotatably engaged with the handle frame 14.
[0018] The limiting mechanism includes two fixed plates 15, which are fixedly connected to the front side wall of the mixing barrel 1 in parallel and vertically. A support shaft 16 is rotatably connected between the front ends of the two fixed plates 15. A buckle plate 17 is fixedly connected to the outer wall of the support shaft 16. The lower end of the buckle plate 17 is bent inward by ninety degrees. The outer walls of both ends of the support shaft 16 are sleeved with torsion springs 18, and the two ends of the torsion spring 18 are fixedly connected to the inner wall of the fixed plate 15 and the outer wall of the buckle plate 17 respectively.
[0019] The upper part of the mixing barrel 1 and the edge of the top cover 3 are respectively provided with a flange 19 and a flange 20, and the flange 19 and the flange 20 are penetrated by bolts 21, and the bottom of the bolts 21 is provided with nuts, and the flange 19 and the flange 20 are fixed by the bolts 21 and the nuts.
[0020] The mixing barrel 1 is respectively fed with casting sand, binder, additive and water through three feeding pipes 4, and the motor 5 is started to drive the rotating shaft 6 and the stirring plate 7 to rotate counterclockwise. The materials are mixed by the inclination of the stirring plate 7. The rotating shaft 6 drives the fixed rod 8 and the scraper 9 to rotate at the same time. The scraper 9 scrapes off the materials adhering to the inner wall of the mixing barrel 1 to avoid waste of materials and errors in the proportion. After stirring, the buckle plate 17 is pulled outward, and the buckle plate 17 rotates along the supporting shaft 16 and disengages from the handle frame 14. The handle frame 14 is grasped to move the guide plate 13 downward. The guide plate 13 is mounted on two supporting edges 12, and the guide plate 13 exposes the discharge hole 10. The mixed materials can flow out from the discharge hole 10 and flow down along the guide plate 13 for easy collection.
Claims
1. A stirring and scraping device for a sand mixer, comprising a stirring barrel (1), characterized in that: The bottom of the mixing barrel (1) is fixedly connected to three legs (2), the legs (2) are distributed in an equilateral triangle, the top of the mixing barrel (1) is fixedly connected to a top cover (3), the top of the top cover (3) is fixedly connected to three feed pipes (4), the three feed pipes (4) are respectively connected to the inside of the mixing barrel (1), the upper center of the top cover (3) is fixedly connected to a motor (5), the output shaft of the motor (5) passes through the upper center of the top cover (3), the output shaft of the motor (5) is rotatably connected to the top cover (3), and the bottom end of the output shaft of the motor (5) is fixedly connected to A rotating shaft (6) is connected, the bottom end of the rotating shaft (6) is rotatably connected to the center of the inner bottom wall of the mixing barrel (1), the outer wall of the rotating shaft (6) is fixedly connected to two stirring plates (7), the stirring plates (7) are tilted counterclockwise from the top along the outer wall of the rotating shaft (6), and the two stirring plates (7) are symmetrically distributed in the center, and two fixing rods (8) are fixedly connected to the middle of the outer wall of the rotating shaft (6), the two fixing rods (8) are symmetrically distributed and located between the two stirring plates (7), and the outer ends of the fixing rods (8) are fixedly connected to scrapers (9), and the outer wall of the scrapers (9) is The mixing barrel (1) is arc-shaped and has a clearance fit with the inner wall of the mixing barrel (1). A discharge hole (10) is provided at the front side of the bottom of the mixing barrel (1). The discharge hole (10) is fan-shaped. Two side plates (11) are fixedly connected to the bottom of the mixing barrel (1). The two side plates (11) are symmetrically located on the left and right sides of the bottom of the discharge hole (10). The side plates (11) are in the shape of a right triangle. The hypotenuse of the side plates (11) faces downward. The hypotenuse of the bottom of the two side plates (11) is fixedly connected to the side wall with a supporting edge (12). A guide plate (13) is provided between the two side plates (11). ), the two sides of the bottom of the guide plate (13) overlap the upper part of the supporting edge (12), the rear side of the guide plate (13) is rotatably connected to the bottom of the mixing barrel (1), the guide plate (13) is located below the discharge hole (10), the two sides of the guide plate (13) are respectively clearance-matched with the two side plates (11), the top of the front side wall of the guide plate (13) is fixedly connected to the bottom of the handle frame (14), the handle frame (14) is rectangular, and the front side wall of the mixing barrel (1) is fixedly connected to the limiting mechanism, and the limiting mechanism is rotatably engaged with the handle frame (14).
2. The stirring and scraping device of a sand mixer according to claim 1, characterized in that: The limiting mechanism comprises two fixing plates (15), the two fixing plates (15) are fixedly connected to the front side wall of the mixing barrel (1) in parallel and vertically, a support shaft (16) is rotatably connected between the front ends of the two fixing plates (15), a buckle plate (17) is fixedly connected to the outer wall of the support shaft (16), the lower end of the buckle plate (17) is bent inwardly at ninety degrees, and the outer walls of both ends of the support shaft (16) are sleeved with torsion springs (18), and the two ends of the torsion spring (18) are respectively fixedly connected to the inner wall of the fixing plate (15) and the outer wall of the buckle plate (17).
3. The stirring and scraping device of a sand mixer according to claim 1, characterized in that: The upper part of the mixing barrel (1) and the edge of the top cover (3) are respectively provided with a flange plate 1 (19) and a flange plate 2 (20), the flange plate 1 (19) and the flange plate 2 (20) are penetrated by bolts (21), the bottom of the bolts (21) is provided with nuts, and the flange plate 1 (19) and the flange plate 2 (20) are fixed by the bolts (21) and the nuts.