Stirring device of vertical shaft planetary stirrer
By using the clamping shaft and step structure in a vertical axis planetary mixer, the connection strength and wear problems are solved, and a higher service life and stirring efficiency are achieved.
Patent Information
- Application Number
- CN202422193693.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The mixing device of traditional vertical shaft planetary mixer has problems such as poor connection strength, easy wear and short service life.
The clamp shaft is used instead of the spline sleeve for torque transmission, the step structure of the agitator arm is added to share the torque, and the anti-loosening device is set to prevent the agitator knife from rushing up and down, and a wear-resistant layer is thickened at the edge of the agitator knife to reduce wear.
It improves the connection strength of the stirring device, extends the service life, reduces the wear of the stirring knife, and enhances the stirring effect.
Smart Images
Figure CN223131026U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete mixing, in particular to a stirring device of a vertical shaft planetary mixer. Background Art
[0002] Concrete is a homogeneous mixture stirred from raw materials such as sand and gravel aggregates, cement, water, and admixtures. Stirring is a very important process in the concrete production process. Because the design of the concrete mix ratio is that the fine aggregate just fills the gaps between the aggregates, and the cement gel is evenly distributed on the surfaces of the coarse and fine aggregates. Only by stirring the mixture evenly can the densest and high-quality concrete be obtained. At the same time, the concrete can be plasticized and strengthened through stirring. Therefore, the concrete mixer is one of the core devices in concrete production, used to complete the uniform mixing of concrete and ensure the macroscopic and microscopic homogeneity of concrete.
[0003] The vertical shaft planetary mixer is a common concrete mixer. Its stirring device is arranged on the rotating body and usually consists of a stirring arm and a stirring blade. Its characteristics are that there are two sets of stirring devices. The revolution stirring device is fixed on the rotating body and revolves in one direction along with the rotating body. The scraping blade is fixed on the revolution stirring device to scrape the inner wall of the cylinder; the rotation stirring device rotates at different speeds through the planetary gears in the rotating body. The stirring blade is fixed on the stirring arm to form a three-dimensional staggered material flow with a swirling flow, and the stirring intensity is large. There are some problems with the stirring device of the traditional vertical shaft planetary mixer: the stirring blade is fixed on the stirring arm by bolts, and the torque is completely transmitted depending on the strength of the bolts, which easily causes the bolts to have a shortened service life and break frequently. Therefore, strong stirring cannot be carried out; the torque is usually transmitted between the stirring shaft and the rotation stirring arm in the rotation stirring device by the cooperation of a spline and a spline sleeve. The spline sleeve is extremely easy to wear during the stirring process, and there is a large amount of concrete residue solidified in the mixer cylinder after stirring, making it difficult to disassemble and replace; after the stirring blade is worn, the adjustment depends on the bolt fixation, and the bolts are easy to loosen, resulting in the up and down movement of the stirring blade. Summary of the Invention
[0004] Aiming at the deficiencies of the prior art, the utility model provides a stirring device of a vertical shaft planetary mixer, which solves the problems of poor connection strength, easy wear, and short service life of the stirring device of the vertical shaft planetary mixer during the concrete stirring process.
[0005] To achieve the purpose that the stirring device of the vertical shaft planetary mixer has good connection strength, is not easily worn, and has a long service life during the concrete stirring process, the present utility model provides the following technical solution: A stirring device of a vertical shaft planetary mixer, including a rotating body, on which a revolution stirring device for stirring concrete is fixedly installed, and the revolution stirring device revolves along a direction together with the rotating body. The rotating body drives a self-rotation stirring device for stirring concrete through a planetary gear arranged inside it, and the self-rotation stirring device rotates at different speeds through the cooperation of the planetary gear inside the rotating body. A stirring shaft for driving it is arranged on the self-rotation stirring device;
[0006] The revolution stirring device includes a stirring arm fixing plate, which is fixedly installed on the rotating body through bolts. A revolution welding rod is welded and fixed on the stirring arm fixing plate. A vertical stirring arm fixing plate is welded and fixed on the end face of the revolution welding rod. The vertical stirring arm fixing plate is fixedly installed with a vertical stirring arm fixing and mounting plate through bolts. A vertical stirring arm is welded and fixed on the vertical stirring arm fixing and mounting plate. A scraping knife mounting plate is welded and fixed at the bottom end of the vertical stirring arm. A scraping knife is fixedly installed on the scraping knife mounting plate through bolts;
[0007] The self-rotation stirring device includes two hoop sleeves connected by bolts. An empty space is provided inside the hoop sleeves. The stirring shaft is fixedly installed inside the two hoop sleeves, and a U-shaped clamp is fixedly installed on the two hoop sleeves through bolts. A self-rotation welding rod is welded and fixed on the hoop sleeve. One end of the self-rotation welding rod is welded and fixed with a self-rotation stirring arm fixing plate. The self-rotation stirring arm fixing plate is fixedly installed with a self-rotation stirring arm mounting plate through bolts. A self-rotation stirring arm is welded and fixed on the self-rotation stirring arm mounting plate.
[0008] Preferably, the stirring arm fixing plate is provided with a long convex step corresponding to the groove on the rotating body. The revolution welding rod is a welded pipe and is directly welded on the stirring arm fixing plate.
[0009] Preferably, the vertical stirring arm fixing plate is provided with several threaded holes and a groove step. The vertical stirring arm is welded on the vertical stirring arm fixing and mounting plate and is wrapped with transverse reinforcing ribs. The vertical stirring arm fixing and mounting plate is provided with a long convex step.
[0010] Preferably, an extension plate is welded and fixed at the bottom end of the self-rotation stirring arm. A bottom scraping knife mounting plate is welded and fixed on the extension plate. A bottom scraping knife is fixedly installed on the bottom scraping knife mounting plate through bolts. A limiting block for limiting the bottom scraping knife is welded and fixed on the bottom scraping knife.
[0011] Preferably, a thickened wear-resistant layer with a certain width is provided at the edge of the bottom scraper, and a T-shaped groove is formed on the end face of the bottom scraper. Preferably, the lengths of the two self-rotating welding rods are different, and the hoop sleeve is divided into two halves and connected by bolts in the middle to hold the stirring shaft tightly.
[0012] Preferably, there are concave and convex steps between the self-rotating stirring arm fixing plate and the self-rotating stirring arm mounting plate, and the self-rotating stirring arm is welded to the self-rotating stirring arm mounting plate.
[0013] Preferably, the limiting block is movably inserted into the bottom scraper mounting plate, and a bolt is threadedly connected to the limiting block.
[0014] Compared with the prior art, the utility model provides a stirring device of a vertical shaft planetary mixer, which has the following beneficial effects:
[0015] 1. For the stirring device of the vertical shaft planetary mixer, by changing the spline sleeve of the stirring device of the vertical shaft planetary mixer to a hoop shaft, it can withstand large torques and is not easily worn. There are steps on the stirring arm of the stirring device of the vertical shaft planetary mixer, which increases the torsional strength, can reduce the torque transmitted by bolts, and enhances the service life.
[0016] 2. For the stirring device of the vertical shaft planetary mixer, the stirring blade of the stirring device of the vertical shaft planetary mixer is provided with a T-shaped groove and an anti-loosening device, which can prevent the stirring blade from moving up and down. At the same time, the stirring blade of the stirring device of the vertical shaft planetary mixer is diamond-shaped and can be used upside down after wear. The connection strength between the stirring arm and the hoop in the stirring device of the vertical shaft planetary mixer is good, the hoop is not easily worn, the service life of the stirring blade is long, and the bolts are not easily loosened. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the front view of a stirring device of a vertical shaft planetary mixer according to the utility model;
[0018] Figure 2 It is the front-end schematic diagram of the revolution stirring device of a stirring device of a vertical shaft planetary mixer according to the utility model;
[0019] Figure 3 It is the rear-end schematic diagram of the revolution stirring device of a stirring device of a vertical shaft planetary mixer according to the utility model;
[0020] Figure 4 It is the schematic diagram of the self-rotation stirring device of a stirring device of a vertical shaft planetary mixer according to the utility model;
[0021] Figure 5 It is the front view of the self-rotation stirring device of a stirring device of a vertical shaft planetary mixer according to the utility model;
[0022] Figure 6The top view of the mixing shaft of the mixing device of a vertical shaft planetary mixer described in the present utility model;
[0023] Figure 7 The schematic diagram of the bottom scraper of the mixing device of a vertical shaft planetary mixer described in the present utility model.
[0024] The marks in the attached drawings are described separately as follows:
[0025] 1, revolving body; 2, revolution mixing device; 21, mixing arm fixing plate; 22, revolution welding rod; 23, vertical mixing arm fixing plate; 24, vertical mixing arm fixed mounting plate; 25, vertical mixing arm; 26, scraping knife mounting plate; 27, scraping knife; 3, rotation mixing device; 31, hoop sleeve; 32, U-shaped clamp; 33, rotation welding rod; 34, rotation mixing arm fixing plate; 35, rotation mixing arm mounting plate; 36, rotation mixing arm; 37, extension plate; 38, bottom scraper mounting plate; 39, bottom scraper; 391, thickened wear-resistant layer; 392, T-shaped groove; 310, limit block; 311, clearance; 4, mixing shaft. Specific embodiments
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.
[0027] Please refer to Figure 1-7 , the present utility model provides a mixing device of a vertical shaft planetary mixer, including a revolving body 1, on which a revolution mixing device 2 for mixing concrete is fixedly installed, and the revolution mixing device 2 revolves along a direction together with the revolving body 1. The revolving body 1 drives a rotation mixing device 3 for mixing concrete through a planetary gear arranged inside it, and the rotation mixing device 3 rotates at different speeds through the cooperation of the planetary gear inside the revolving body 1. A mixing shaft 4 for driving it is arranged on the rotation mixing device 3. By connecting the mixing shaft 4 with an external power source, the mixing shaft 4 can drive the revolving body 1 to rotate inside the mixer cylinder, so that the rotation mixing device 3 can rotate, and the rotation mixing device 3 can make the revolution mixing device 2 revolve at different speeds through the planetary gear arranged on the revolving body 1, so as to subsequently mix and process the concrete inside the mixer cylinder;
[0028] The revolution stirring device 2 includes a stirring arm fixing plate 21 which is fixedly installed on the rotating body 1 by bolts. A revolution welding rod 22 is welded and fixed on the stirring arm fixing plate 21. A vertical stirring arm fixing plate 23 is welded and fixed to the end face of the revolution welding rod 22. A vertical stirring arm fixed mounting plate 24 is fixedly installed on the vertical stirring arm fixing plate 23 by bolts. A vertical stirring arm 25 is welded and fixed on the vertical stirring arm fixed mounting plate 24. A scraping knife mounting plate 26 is welded and fixed to the bottom end of the vertical stirring arm 25. A scraping knife 27 is fixedly installed on the scraping knife mounting plate 26 by bolts. The scraping knife 27 is used to quickly stir and flip the material to form a three-dimensional staggered material flow and scrape the bottom plate of the mixer cylinder body.
[0029] The rotation stirring device 3 includes two sets of hoop sleeves 31 connected by bolts. An empty space 311 is provided inside the hoop sleeve 31. The stirring shaft 4 is fixedly installed inside the two sets of hoop sleeves 31. And a U-shaped clamp 32 is fixedly installed on the two sets of hoop sleeves 31 by bolts. A rotation welding rod 33 is welded and fixed on the hoop sleeve 31. One end of the rotation welding rod 33 is welded and fixed with a rotation stirring arm fixing plate 34. A rotation stirring arm mounting plate 35 is fixedly installed on the rotation stirring arm fixing plate 34 by bolts. A rotation stirring arm 36 is welded and fixed on the rotation stirring arm mounting plate 35.
[0030] Furthermore, the stirring arm fixing plate 21 is provided with a long convex step corresponding to the groove on the rotating body 1. The revolution welding rod 22 is a welded pipe directly welded on the stirring arm fixing plate 21, which can share most of the torque on the stirring arm fixing plate 21. The revolution welding rod 22 is welded with reinforcing ribs to strengthen its strength.
[0031] Furthermore, the vertical stirring arm fixing plate 23 is provided with several threaded holes and a groove step. The vertical stirring arm 25 is welded on the vertical stirring arm fixed mounting plate 24 and is wrapped with transverse reinforcing ribs. The vertical stirring arm fixed mounting plate 24 is provided with a long convex step, which can be welded in a "well-shaped" intersection to increase the welding strength and corresponds to the groove on the vertical stirring arm fixing plate 23 to share part of the torque.
[0032] Furthermore, an extension plate 37 is welded and fixed to the bottom end of the rotation stirring arm 36. A bottom scraping knife mounting plate 38 is welded and fixed on the extension plate 37. A bottom scraping knife 39 is fixedly installed on the bottom scraping knife mounting plate 38 by bolts. A limiting block 310 for limiting the bottom scraping knife 39 is welded and fixed on the bottom scraping knife 39.
[0033] Furthermore, the edge of the bottom scraping knife 39 is provided with a thickened wear-resistant layer 391 with a certain width. A T-shaped groove 392 is opened on the end face of the bottom scraping knife 39. The bottom scraping knife 39 is convenient for stirring the material upward to form an up-and-down flip, and reduces the positive contact area of the material with the bottom scraping knife, thereby reducing the torque on the rotation stirring arm.
[0034] Furthermore, the lengths of the rotating welding rods 33 on both sides are different, and the clamp sleeve 31 is divided into two halves, which are connected by bolts in the middle to clamp the stirring shaft 4. The rotating welding rods 33 are used to change the stirring radius for more intensive stirring, and the clamp sleeve 31 increases the contact area to better withstand torque and is easy to install.
[0035] Furthermore, a concave and convex step is provided between the self-rotating stirring arm fixing plate 34 and the self-rotating stirring arm mounting plate 35, the self-rotating stirring arm 36 is welded to the self-rotating stirring arm mounting plate 35, and the self-rotating stirring arm mounting plate 35 is wrapped with transverse reinforcing ribs, which can be "well-shaped" staggered welded to increase welding strength.
[0036] Furthermore, the limit block 310 is movably connected to the bottom scraper mounting plate 38, and a bolt is threadedly connected to the limit block 310. The bolt is screwed in to support the nut that fixes the bottom scraper 39 to prevent the nut from loosening and the bottom scraper from being lifted up by the material. The bottom scraper 39 is installed at an angle to facilitate the upward movement of the material to form an upside-down flip, and reduces the positive contact area of the material on the bottom scraper, thereby reducing the torque on the rotating stirring arm.
[0037] When in use, by connecting the stirring shaft 4 to an external power source, the stirring shaft 4 can drive the rotating body 1 to rotate inside the mixer cylinder, so that the self-rotating stirring device 3 can rotate, and the self-rotating stirring device 3 can make the revolving stirring device 2 rotate with the rotating body 1 at different speeds through the planetary gears arranged on the rotating body 1, and during the revolution of the revolving stirring device 2, the revolving welding rod 22 can be driven to rotate through the stirring arm fixing plate 21, and the revolving welding rod 22 is connected to the vertical stirring arm fixing plate 23 and the vertical stirring arm fixing mounting plate 24 can drive the scraper 27 to revolve, so the scraper 27 can scrape the inner wall of the cylinder body. During the rotation of the self-rotating stirring device 3, the self-rotating welding rod 33 can drive the self-rotating stirring arm 36 to rotate through the self-rotating stirring arm fixing plate 34 and the self-rotating stirring arm mounting plate 35. The self-rotating stirring arm 36 can drive the bottom scraper 39 to rotate through the bottom scraper mounting plate 38, and the bottom scraper 39 is installed at an angle, which is convenient for pushing the material upward to form an upside-down flip, and reduces the positive contact area of the material on the bottom scraper, thereby reducing the torque on the self-rotating stirring arm.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A stirring device for a vertical shaft planetary mixer, comprising a rotating body (1), characterized in that: A revolution stirring device (2) for concrete stirring is fixedly installed on the revolving body (1), and the revolution stirring device (2) revolves along one direction together with the revolving body (1). The revolving body (1) drives a self-rotation stirring device (3) for concrete stirring through a planetary gear arranged inside it, and the self-rotation stirring device (3) rotates at different speeds through the cooperation of the planetary gear in the revolving body (1). A stirring shaft (4) for driving it is arranged on the self-rotation stirring device (3). The revolution stirring device (2) includes a stirring arm fixing plate (21), the stirring arm fixing plate (21) is fixedly installed on the revolving body (1) through bolts, a revolution welding rod (22) is fixedly welded on the stirring arm fixing plate (21), a vertical stirring arm fixing plate (23) is fixedly welded on the end face of the revolution welding rod (22), a vertical stirring arm fixed mounting plate (24) is fixedly installed on the vertical stirring arm fixing plate (23) through bolts, a vertical stirring arm (25) is fixedly welded on the vertical stirring arm fixed mounting plate (24), a scraping knife mounting plate (26) is fixedly welded at the bottom end of the vertical stirring arm (25), and a scraping knife (27) is fixedly installed on the scraping knife mounting plate (26) through bolts. The self-rotation stirring device (3) includes two sets of hoop sleeves (31) connected by bolts. An empty space (311) is provided inside the hoop sleeve (31). The stirring shaft (4) is fixedly installed in the two sets of hoop sleeves (31), and a U-shaped clamp (32) is fixedly installed on the two sets of hoop sleeves (31) through bolts. A self-rotation welding rod (33) is fixedly welded on the hoop sleeve (31), a self-rotation stirring arm fixing plate (34) is fixedly welded at one end of the self-rotation welding rod (33), a self-rotation stirring arm mounting plate (35) is fixedly installed on the self-rotation stirring arm fixing plate (34) through bolts, and a self-rotation stirring arm (36) is fixedly welded on the self-rotation stirring arm mounting plate (35).
2. The stirring device of a vertical shaft planetary stirrer according to claim 1, characterized in that: The stirring arm fixing plate (21) is provided with a long convex step corresponding to the groove on the revolving body (1). The revolution welding rod (22) is a welded pipe and is directly welded on the stirring arm fixing plate (21).
3. The stirring device of a vertical shaft planetary mixer according to claim 1, wherein: The vertical stirring arm fixing plate (23) is provided with a number of threaded holes and a groove step. The vertical stirring arm (25) is welded on the vertical stirring arm fixed mounting plate (24) and is wrapped with transverse reinforcing ribs. The vertical stirring arm fixed mounting plate (24) is provided with a long convex step.
4. The stirring device of a vertical shaft planetary mixer according to claim 1, characterized in that: An extension plate (37) is fixedly welded at the bottom end of the self-rotation stirring arm (36). A bottom scraping knife mounting plate (38) is fixedly welded on the extension plate (37). A bottom scraping knife (39) is fixedly installed on the bottom scraping knife mounting plate (38) through bolts. A limiting block (310) for limiting the bottom scraping knife (39) is fixedly welded on the bottom scraping knife (39).
5. The stirring device of a vertical shaft planetary mixer according to claim 4, wherein: The edge of the bottom scraping knife (39) is provided with a thickened wear-resistant layer (391) with a certain width. A T-shaped groove (392) is opened on the end face of the bottom scraping knife (39).
6. The stirring device of a vertical shaft planetary mixer according to claim 1, characterized in that: The lengths of the two self-rotating welding rods (33) are different. The hoop sleeve (31) is divided into two halves and connected by bolts in the middle to tightly hold the stirring shaft (4).
7. The stirring device of a vertical shaft planetary mixer according to claim 1, characterized in that: There are concave and convex steps between the self-rotating stirring arm fixing plate (34) and the self-rotating stirring arm mounting plate (35), and the self-rotating stirring arm (36) is welded to the self-rotating stirring arm mounting plate (35).
8. The stirring device of a vertical shaft planetary stirrer according to claim 4, characterized in that: The limiting block (310) is movably inserted into the bottom scraper mounting plate (38), and a bolt is threadedly connected to the limiting block (310).