Stirring device for improving high liquid limit soil

Abstract

The utility model discloses a stirring device for improving high liquid limit soil, which comprises a machine body, a gravel crushing and screening device and a mixing and stirring device are arranged in the machine body, gravel is put into a screening frame, crushed into gravel with proper particle size through a crushing blade and falls into a mixing frame through a through hole, and the mixing frame rotates along with a rotating motor. And meanwhile, the mixing frame moves along with the sliding block and rotates around the rotating shaft in an oval track, so that the high limiting soil and the gravel in the mixing frame are mixed, and the problems that the gravel and the limiting soil are mixed unevenly, and the gravel screening operation steps are tedious are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a stirring device for improving high liquid limit soil. Background Art

[0002] Due to the high natural moisture content, poor water stability and difficulty in compaction of high liquid limit soil, the stability and bearing strength of high liquid limit soil roadbed are not easy to meet the design requirements. How to effectively treat the roadbed determines the length of later road use and whether the social and economic benefits can be maximized. The treatment methods for high liquid limit soil roadbed diseases include: rolling method, gravel improvement method, laying civil engineering fabrics, chemical methods, etc., to improve the plate properties and overall strength of the roadbed.

[0003] Among them, the gravel improvement method is a physical method that combines actual engineering, adds gravel to high liquid limit soil, and improves the plate body and overall strength of the roadbed by artificially mixing gravel. When artificially mixing gravel, gravel and limited soil are usually put into a bucket, and the driving motor drives the stirring roller to rotate, so that the two are mixed. It has the following shortcomings:

[0004] 1. Gravel refers to a mixture of sand and gravel or pebbles and boulders (a type of rock formed by water or weather erosion). The particle size of gravel used for road base paving is usually between 5-25mm. Too large a particle size of gravel is not conducive to road base paving and reduces mixing efficiency. Screening gravel of appropriate particle size in advance is cumbersome and inefficient.

[0005] 2. The gravel and high-limit soil are mixed by a stirring shaft located in the center of the cylinder. If the cylinder volume is large, uneven mixing is likely to occur.

[0006] Therefore, how to design a high liquid limit soil improvement stirring device that can solve the above-mentioned technical problems is a technical problem that needs to be solved. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model designs a stirring device for improving high liquid limit soil.

[0008] The technical solution of the utility model is as follows:

[0009] A stirring device for improving high liquid limit soil comprises a machine body, in which a gravel crushing and screening device and a mixing and stirring device are arranged, and the mixing and stirring device comprises a rotating shaft 2, an eccentric wheel seat, a rotating sleeve, a slider, a rotating motor and a mixing frame; the rotating shaft 2 is arranged at the center position of the bottom of the machine body, one end of the rotating shaft 2 passes through the bottom plate of the machine body and extends to the outside of the machine body and the end is connected with a driving motor 2; the eccentric wheel seat is fixedly arranged at the bottom of the machine body, the eccentric wheel seat is sleeved on the outer peripheral wall of the rotating shaft 2 and is rotatably connected to the rotating shaft 2; the rotating sleeve is arranged above the eccentric wheel seat, and the rotating sleeve is fixedly sleeved on the outer peripheral wall of the rotating shaft 2; an annular slideway is provided on the eccentric wheel seat, a slide groove is provided on the rotating sleeve, the slider is arranged in the annular slideway and the slide groove, the rotating motor is arranged between the slider and the mixing frame, and the driving end of the rotating motor is connected to the mixing frame.

[0010] Furthermore, the gravel crushing and screening device includes a rotating shaft 1 arranged in the middle of the body, a screening frame sleeved on the outer wall of the rotating shaft 1, and a plurality of support rods arranged on the top of the outer peripheral wall of the screening frame and arranged circumferentially along the outer peripheral wall; one end of the rotating shaft 1 extends through the top plate of the body to the outside of the body and is connected to a driving motor 1 at the end, and the other end extends downward through the bottom of the screening frame; a plurality of crushing blades are provided on the outer peripheral wall of the rotating shaft 1 in the screening frame along the height direction of the rotating shaft 1, a plurality of stirring rods are provided on the outer peripheral wall of the rotating shaft 1 extending downward through the bottom of the screening frame, and a through hole is opened on the outer wall of the screening frame to facilitate the passage of gravel.

[0011] Furthermore, the height of the mixing frame is greater than the height of the through holes on the outer wall of the screening frame.

[0012] Furthermore, a gravel feed port is provided on the upper end surface of the machine body, and a material guide slide is provided below the gravel feed port, and the end point of the material guide slide is arranged directly above the screening frame.

[0013] Furthermore, a limited soil feed port is provided on the upper end surface of the machine body.

[0014] Furthermore, a plurality of protruding steel particles are provided on the upper and lower end surfaces of the crushing blade.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model is a stirring device for improving high liquid limit soil. By setting a screening frame and a mixing frame rotating around the screening frame in an elliptical trajectory, gravel is put into the screening frame, and the gravel is crushed into gravel with a suitable particle size by a crushing blade. The gravel falls into the mixing frame through a through hole. The mixing frame rotates with the rotating motor and the mixing frame moves with the slider to rotate around the rotating axis in an elliptical trajectory, so that the high limit soil in the mixing frame is mixed with the gravel, thereby improving the mixing efficiency and mixing uniformity and avoiding the occurrence of uneven mixing.

[0017] 2. The utility model is a stirring device for improving high liquid limit soil. The rotating motor drives the mixing frame to rotate circumferentially to improve the mixing efficiency;

[0018] 3. The utility model is a stirring device for improving high liquid limit soil, which enhances the crushing efficiency of the crushing blade by arranging protruding steel particles on the blade;

[0019] 4. The utility model provides a stirring device for improving high liquid limit soil, which improves the performance of high liquid limit soil and enables it to be more widely used in the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the stirring device for improving high liquid limit soil of the utility model;

[0021] Figure 2 It is a partial enlarged view of the stirring device for improving high liquid limit soil of the utility model at position A;

[0022] Figure 3 It is a top view of the mixing and stirring device in the stirring device for improving high liquid limit soil of the utility model;

[0023] Figure 4 It is a front view of the stirring device for improving high liquid limit soil of the utility model.

[0024] The reference numerals in the figure represent:

[0025] 1. Machine body; 11. Gravel feed port; 12. Material guide slide; 13. Limiting soil feed port; 2. Gravel crushing and screening device; 21. Rotating shaft 1; 211. Crushing blade; 2111. Outwardly protruding steel particles; 212. Stirring rod; 22. Screening frame; 221. Through hole; 23. Support rod; 24. Driving motor 1; 3. Mixing and stirring device; 31. Rotating shaft 2; 32. Eccentric wheel seat; 321. Annular slide; 33. Rotating collar; 331. Slide; 34. Sliding block; 35. Rotating motor; 36. Mixing frame; 37. Driving motor 2. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] See also Figures 1 to 4 A stirring device for improving high liquid limit soil includes a body 1, in which a gravel crushing and screening device 2 and a mixing and stirring device 3 are arranged. The two devices can simultaneously complete the crushing and screening of gravel, and the mixing and stirring of high liquid limit soil and other materials.

[0028] The gravel crushing and screening device 2 includes a rotating shaft 21, a screening frame 22 and a plurality of support rods 23. The rotating shaft 21 is located in the middle of the machine body 1, and the screening frame 22 is sleeved on the outer wall of the rotating shaft 21; the screening frame 22 is fixed to the inner wall of the machine body 1 through a plurality of support rods 23 evenly distributed on the outer peripheral wall, which are distributed circumferentially along the outer peripheral wall to provide stable support for the screening frame 22; one end of the rotating shaft 21 passes through the top plate of the machine body 1 and extends to the outside of the machine body 1, and the end is connected to a driving motor 24, and the other end passes through the bottom of the screening frame 22 and extends downward; this design allows the rotating shaft 21 to rotate freely under the drive of the motor; the outer peripheral wall of the rotating shaft 21 in the screening frame 22 is A plurality of crushing blades 211 are arranged along the height direction of the rotating shaft 21. When the rotating shaft 21 rotates, these blades will rotate at high speed to crush the gravel entering the screening frame 22 into smaller particles. At the same time, a plurality of stirring rods 212 are arranged along the height direction of the rotating shaft 21 on the outer peripheral wall of the rotating shaft 21 that passes through the bottom of the screening frame 22 and extends downward. These stirring rods 212 can effectively stir the gravel in the screening frame 22 when rotating, so that it can be better mixed with the high-level limit soil. A through hole 221 is opened on the outer wall of the screening frame 22. On the one hand, it can screen sand particles with suitable particle size, and on the other hand, it is convenient for the gravel to pass through the through hole 221 into the mixing and stirring device 3 for the next step of processing.

[0029] In this embodiment, the mixing device 3 is responsible for mixing the screened gravel with the high liquid limit soil to improve the performance of the high liquid limit soil. The mixing device 3 includes a rotating shaft 2 31, an eccentric wheel seat 32, a rotating ring 33, a slider 34, a rotating motor 35 and a mixing frame 36; the rotating shaft 2 31 is arranged at the center of the bottom of the body 1, one end of the rotating shaft 2 31 passes through the bottom plate of the body 1 and extends to the outside of the body 1 and the end is connected to a driving motor 2 37, and the motor 2 37 drives the rotating shaft 2 31 to achieve stable rotation; the eccentric wheel seat 3 2 is fixedly arranged at the bottom of the machine body 1, the eccentric wheel seat 32 is sleeved on the outer peripheral wall of the second rotating shaft 31 and is rotatably connected with the second rotating shaft 31; the rotating collar 33 is arranged above the eccentric wheel seat 32, and the rotating collar 33 is fixedly sleeved on the outer peripheral wall of the second rotating shaft 31; the eccentric wheel seat 32 is provided with an annular slideway 321, and the design of the slideway is to enable the slider 34 to move along the annular slideway 321 without frequently changing the direction during movement. Compared with the traditional circular slideway, the annular slideway 321 can effectively reduce energy consumption and improve the service life of the equipment.

[0030] A slide groove 331 is provided on the rotating ring 33, and a slider 34 is arranged in the annular slideway 321 and the slide groove 331. Under the guidance of the annular slideway 321 and the slide groove 331, the slider 34 reciprocates with the rotation of the rotating shaft 31, thereby driving the mixing frame 36 to rotate at a uniform speed in the machine body 1. At the same time, a rotating motor 35 is arranged between the slider 34 and the mixing frame 36, and the driving end of the rotating motor 35 is connected to the mixing frame 36. When the rotating motor 35 is started, the mixing frame 36 can not only realize high-speed rotation on its own axis, but also rotate around the rotating shaft 31. This unique dual rotation mechanism ensures that the sand and gravel can be fully initially stirred at the initial stage of entering the mixing frame 36. Subsequently, the high-speed rotation of the mixing frame 36 itself further realizes secondary stirring of the sand and gravel, thereby ensuring the thoroughness and uniformity of the mixing process.

[0031] In this embodiment, the mixing frame 36 is disposed below the support rod 23 to prevent the mixing frame 36 from colliding with the support rod 23 and causing a malfunction.

[0032] In this embodiment, the height of the mixing frame 36 is designed to be higher than the height of the through hole 221 on the outer wall of the screening frame 22. This design ensures that the gravel can smoothly fall into the mixing frame 36 when passing through the screening frame 22, thereby effectively avoiding the phenomenon of gravel splashing around during the screening process. This improvement not only reduces the loss of gravel and improves production efficiency, but also protects the device itself and prolongs the service life of the equipment.

[0033] In this embodiment, a gravel feed port 11 is provided on the upper end surface of the machine body 1, and a material guide chute 12 is provided below the gravel feed port 11. The end point of the material guide chute 12 is located directly above the screening frame 22, ensuring that the gravel can smoothly enter the screening frame 22.

[0034] In this embodiment, a limited soil feed port 13 is also provided on the upper end surface of the machine body 1. This design ensures that the limited soil feed port 13 and the gravel feed port 11 can independently add materials when the machine is running, thereby improving work efficiency and convenience of operation. Through such improvements, our machine can better meet actual production needs and provide more stable and reliable support for production activities.

[0035] In this embodiment, a plurality of protruding steel particles 2111 are provided on the upper and lower end surfaces of the crushing blade 211 to improve the crushing efficiency of the gravel.

[0036] Working principle:

[0037] Gravel and high-limit soil are respectively fed into the screening frame 22 and the mixing frame 36 through the gravel feed port 11 and the limit soil feed port 13. At this time, gravel of appropriate size (particle size less than 25 mm) directly enters the mixing frame 36 through the through hole 221. The driving motor 1 24 drives the rotating shaft 1 21 to rotate. The rotating shaft 1 21 rotates at a high speed to drive the crushing blade 211 to strike the large pieces of gravel at a high speed, crushing them into individuals with smaller particle sizes so that they pass through the through hole 221 and enter the mixing frame 36. At the same time, the driving motor 2 37 works to drive the rotating shaft 21. The shaft 2 31 drives the rotating ring 33 to rotate. While the slider 34 moves back and forth along the slide groove 331, the slider 34 slides in the annular slideway 321 and drives the mixing frame 36 to rotate in an elliptical trajectory in the machine body 1. Since the mixing frame 36 moves around the rotating shaft 1 21 arranged in the middle of the machine body 1, the mixing uniformity between the high limit soil and the gravel in the mixing frame 36 is improved. At the end of mixing, a pump connecting pipe can be set at the limit soil feed port 13 to extract the evenly mixed gravel and limit soil from the mixing frame 36 for use.

[0038] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A stirring device for improving high liquid limit soil, comprising a body (1), wherein a gravel crushing and screening device (2) and a mixing and stirring device (3) are arranged in the body (1), characterized in that: The mixing and stirring device (3) comprises a second rotating shaft (31), an eccentric wheel seat (32), a rotating sleeve (33), a slider (34), a rotating motor (35) and a mixing frame (36); the second rotating shaft (31) is arranged at the center position of the bottom of the machine body (1) and is driven by a second driving motor (37); the eccentric wheel seat (32) is arranged at the bottom of the machine body (1), the rotating sleeve (33) is arranged above the eccentric wheel seat (32), and the rotating sleeve (33) is fixedly sleeved on the outer peripheral wall of the second rotating shaft (31); an annular slideway (321) is provided on the eccentric wheel seat (32), a slide groove (331) is provided on the rotating sleeve (33), the slider (34) is arranged in the annular slideway (321) and the slide groove (331), the rotating motor (35) is arranged between the slider (34) and the mixing frame (36), and the driving end of the rotating motor (35) is connected to the mixing frame (36).

2. The stirring device for improving high liquid limit soil according to claim 1, characterized in that: The gravel crushing and screening device (2) comprises a rotating shaft (21) and a screening frame (22) arranged in the middle of a machine body (1); one end of the rotating shaft (21) is driven by a driving motor (24), and the other end passes through the bottom of the screening frame (22) and extends downward; a plurality of crushing blades (211) are arranged on the outer peripheral wall of the shaft body extending from the rotating shaft (21) into the screening frame (22) along the height direction of the rotating shaft (21); a plurality of stirring rods (212) are arranged on the outer peripheral wall of the shaft body extending from the rotating shaft (21) to the bottom of the screening frame (22) along the height direction of the rotating shaft (21); and a through hole (221) is opened on the outer wall of the screening frame (22) for facilitating the passage of gravel.

3. The stirring device for improving high liquid limit soil according to claim 2, characterized in that: The height of the mixing frame (36) is greater than the height of the through hole (221) on the outer wall of the screening frame (22).

4. The stirring device for improving high liquid limit soil according to claim 2, characterized in that: A gravel feed inlet (11) is provided on the upper end surface of the machine body (1), and a material guide slideway (12) is provided below the gravel feed inlet (11), wherein the end point of the material guide slideway (12) is located directly above the screening frame (22).

5. The stirring device for improving high liquid limit soil according to claim 2, characterized in that: A plurality of outwardly protruding steel particles (2111) are provided on the upper and lower end surfaces of the crushing blade (211).

6. The stirring device for improving high liquid limit soil according to claim 1, characterized in that: The upper end surface of the machine body (1) is also provided with a limited soil feed opening (13).

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