Cement soil stirring equipment

Abstract

The utility model belongs to the technical field of building construction equipment, and particularly relates to cement soil stirring equipment. According to the specific technical scheme, the screening device comprises a machine frame body, a screening assembly and a stirring assembly, the screening assembly and the stirring assembly are arranged on the machine frame body, the screening assembly and the stirring assembly are connected through a premixing pipe, the screening assembly comprises a screening chamber, a screen and spiral cutters, and the two rotatable spiral cutters are horizontally arranged in the screening chamber side by side; the two spiral cutters are meshed with each other, and the screen is arranged in the screening chamber and below the two spiral cutters. Under the action of the two spiral cutters, the soil is crushed into plain soil with smaller particle size; when the rotating shaft rotates, the ball blocks are driven to make contact with the screen, the ball blocks impact the screen, the screen continuously vibrates up and down under the action of the springs on the upper side and the lower side, and therefore plain soil with the particle size meeting the requirement is filtered out through the screen.

Description

Technical Field

[0001] This utility model belongs to the field of construction equipment technology, specifically relating to a cement-soil mixing device. Background Technology

[0002] In large-scale urban construction, the number of road and building projects is gradually increasing. Whether the foundation strength meets the standards is one of the important factors affecting the long-term use of the building structure. Due to the different soil characteristics in different areas during construction, if the same type of cement grout is used for filling and backfilling, it will seriously affect the structural density of soft and weak soil layers, resulting in a shortened service life of roads and buildings, and posing certain safety hazards.

[0003] To address the issues of soil structure physical properties and enhance its strength and bearing capacity, cement-modified soil is typically used to meet structural construction requirements. The quality of cement-soil backfill compaction significantly impacts the structure, and compaction at weak points is particularly challenging. To address this, the applicant proposed a grouting reinforcement method adapted to cement-soil spreading. This method involves adding an appropriate amount of cement to the existing soil to improve its physical properties, ensuring the modified cement meets the technical requirements of the backfilling process. Specifically, a hydraulic soil crusher is used at the mixing plant to break up lumps of soil, ensuring the soil particles meet standards. Cement and soil are then mixed using cement-soil mixing equipment, and the resulting cement-soil mixture is used for backfilling. Existing mixing equipment only mixes soil and cement and cannot screen and control the particle size of the soil, resulting in cement-soil mixtures that fail to meet backfilling requirements and affect construction quality. Alternatively, manual screening is used, which reduces construction efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a cement-soil mixing device.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows: a cement-soil mixing device, comprising a frame body and a screening component and a mixing component mounted on the frame body. The screening component and the mixing component are connected by a premixing pipe. The screening component includes a screening chamber, a screen, and spiral blades. Two rotatable spiral blades are arranged horizontally side by side in the screening chamber and mesh with each other. The screen is arranged in the screening chamber below the two spiral blades.

[0006] Preferably, the spiral blade is rotatably connected to the side wall of the screening chamber via a rotating shaft. A connecting sleeve is fixedly sleeved around one of the rotating shafts. A connecting rod is provided on the outer circumferential side wall of the connecting sleeve. A ball is provided at the end of the connecting rod away from the connecting sleeve. When the rotating shaft rotates, it drives the ball to contact the screen. A fixed frame is provided around the screen. An installation groove adapted to the fixed frame is provided on the inner side wall of the screening chamber. Springs are provided at the upper and lower parts of the fixed frame. The end of the spring away from the fixed frame is fixedly connected to the inner side wall of the installation groove.

[0007] Preferably, a plurality of connecting rods are evenly arranged on the outer circumferential sidewall of the connecting sleeve, and a ball block is provided at the other end of each connecting rod away from the connecting sleeve.

[0008] Preferably, the ball is made of an elastic material.

[0009] Preferably, one end of each rotating shaft is rotatably connected to the inner side wall of the screening chamber via a bearing, and the other end passes through the inner side wall of the screening chamber and is connected to a first gear, with the first gears on the two rotating shafts meshing with each other; one end of one rotating shaft is also provided with a driven sprocket, a first motor is provided on the outer side wall of the screening chamber, and a driving sprocket is provided at the output end of the first motor, with the driving sprocket and the driven sprocket being connected by a chain for transmission.

[0010] Preferably, the stirring assembly includes a power mechanism, a stirring drum, and stirring blades. The stirring blades are disposed on the inner wall of the stirring drum, and the power mechanism drives the stirring drum to rotate.

[0011] Preferably, the power mechanism includes a second motor, a rack, and a second gear. The rack is arranged around the outer circumference of the mixing drum. Two second gears are symmetrically arranged at the lower part of the mixing drum. Both second gears are fitted with the rack. The second motor drives one of the second gears to rotate, and the other second gear rotates under the drive of the rack.

[0012] Preferably, the power mechanism further includes a friction belt and pulleys. The friction belt is arranged around the outer circumference of the mixing drum, and two pulleys are symmetrically arranged at the lower part of the mixing drum, with the two pulleys cooperating with the friction belt.

[0013] Preferably, an annular baffle is provided on the outer circumferential side wall of the stirring drum and on both sides of the friction belt, and the distance between the two annular baffles corresponds to the width of the pulley.

[0014] Preferably, the premixing tube includes a pyramidal section, a straight section, and an arc-shaped section. The straight section is disposed between the pyramidal section and the arc-shaped section. The pyramidal section is disposed at the lower part of the screening chamber. The end of the arc-shaped section away from the straight section is rotatably connected to the stirring drum.

[0015] This utility model has the following beneficial effects:

[0016] This application uses two spiral cutters, with a connecting sleeve installed on one of the rotating shafts. A ball block is fixedly installed on the connecting sleeve via a connecting rod. The screen is fixedly connected to the mounting groove by springs around its perimeter. Plain soil and cement enter the screening chamber from the feed inlet. Larger plain soil particles are crushed into smaller particles by the action of the two spiral cutters. When the rotating shaft rotates, it drives the ball block to contact the screen. The ball block impacts the screen, and the screen vibrates up and down continuously under the action of springs on the upper and lower sides, thereby filtering out plain soil with particle sizes that meet the requirements. Attached Figure Description

[0017] Figure 1 This is a front view of the mixing device of this utility model;

[0018] Figure 2 This is a right view of the mixing device of this utility model;

[0019] Figure 3 This is a cross-sectional view of the screening chamber of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0021] Figure 5 This is one embodiment of the arrangement of the connecting sleeve and the ball block in this utility model.

[0022] The diagram shows the following components: 1. Main frame; 2. Screening chamber; 3. Mixing drum; 4. Friction belt; 5. Annular baffle; 6. Pulley; 7. Connecting shaft; 8. Second gear; 9. Rack; 10. Arc-shaped strip; 11. Arc-shaped segment; 12. Straight segment; 13. Four-sided pyramidal segment; 14. First motor; 15. Drive sprocket; 16. Chain; 17. Rotating shaft; 18. Driven sprocket; 19. First gear; 20. Mixing blade; 21. Second motor; 22. Support base; 23. Ball block; 24. Connecting rod; 25. Connecting sleeve; 26. Spiral blade; 27. Mounting groove; 28. Screen; 29. ​​Spring. Detailed Implementation

[0023] The technical solutions of the present invention 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 invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0024] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1-5 As shown, this application discloses a cement-soil mixing device, including a frame body 1 and a screening component and a mixing component disposed on the frame body 1. The screening component and the mixing component are connected by a premixing pipe. The screening component includes a screening chamber 2, a screen 28, and a spiral blade 26. The spiral blade 26 is fixedly disposed around a rotating shaft 17. The two ends of the rotating shaft 17 are respectively rotatably disposed on the side wall of the screening chamber 2. Two spiral blades 26 are arranged horizontally side by side and mesh with each other. A feed inlet is provided at the upper part of the screening chamber 2. The screen 28 is disposed inside the screening chamber 2 and below the two spiral blades 26.

[0026] One of the rotating shafts 17 is fixedly sleeved with a connecting sleeve 25. The connecting sleeve 25 divides the spiral cutter 26 on the rotating shaft 17 into two sections. A connecting rod 24 is fixedly installed on the outer circumferential side wall of the connecting sleeve 25. A ball block 23 is installed at the end of the connecting rod 24 away from the connecting sleeve 25. When the rotating shaft 17 rotates, it drives the ball block 23 to contact the screen 28, causing the screen 28 to vibrate left and right under the impact of the ball block 23, thereby screening the plain soil on the screen 28 and filtering out plain soil with particle size that meets the requirements.

[0027] In a further embodiment, a fixed frame is fixedly provided around the screen 28, and an mounting groove 27 adapted to the fixed frame is provided on the inner side wall of the screening chamber 2. Several springs 29 are fixedly provided at the upper and lower parts of the fixed frame. The other end of the springs 29 at the upper part of the fixed frame is fixedly connected to the inner upper wall of the mounting groove 27, and the other end of the springs 29 at the lower part of the fixed frame is fixedly connected to the inner lower wall of the mounting groove 27. When the rotating shaft 17 rotates, it drives the ball block 23 to contact the screen 28. The ball block 23 impacts the screen 28, and the screen 28 vibrates continuously up and down under the action of the springs 29 on both sides, thereby filtering the soil on the screen 28.

[0028] In a preferred embodiment, a plurality of connecting rods 24 are evenly arranged on the outer circumferential sidewall of the connecting sleeve 25, such as... Figure 5 As shown, each connecting rod 24 has a ball block 23 at its other end away from the connecting sleeve 25. The ball block 23 is made of an elastic material to protect the screen 28.

[0029] In a further embodiment, one end of each rotating shaft 17 is rotatably connected to the inner wall of the screening chamber 2 via a bearing, and the other end is rotatably connected to the side wall of the screening chamber 2 via a bearing. A first gear 19 is connected through the side wall of the screening chamber 2, and the first gears 19 on the two rotating shafts 17 mesh with each other. A driven sprocket 18 is also provided at the end of one of the rotating shafts 17 extending out of the screening chamber 2. The first gear 19 on this rotating shaft 17 is located between the outer wall of the screening chamber 2 and the driven sprocket 18. A first motor 14 is provided on the outer wall of the screening chamber 2, and a driving sprocket 15 is provided at the output end of the first motor 14. The driving sprocket 15 and the driven sprocket 18 are connected by a chain 16. The first motor 14 drives the drive sprocket 15 to rotate, which in turn drives the driven sprocket 18 to rotate under the transmission action of the chain 16. The rotating shaft 17 on which the driven sprocket 18 is located drives the first gear 19 on it to rotate. The rotation of the first gear 19 drives the first gear 19 on another rotating shaft 17 to rotate, thereby causing the two spiral cutters 26 to rotate. When the two spiral cutters 26 rotate, they cut up the soil with larger particle sizes, so that the size of the soil particles meets the requirements.

[0030] In a further embodiment, the mixing assembly includes a power mechanism, a mixing drum 3, and mixing blades 20. The mixing blades 20 are fixedly mounted on the inner wall of the mixing drum 3. The power mechanism drives the mixing drum 3 to rotate, mixing the raw soil with cement. The power mechanism includes a second motor 21, a rack 9, and second gears 8. The rack 9 is arranged around the outer circumference of the mixing drum 3. Two second gears 8 are symmetrically arranged at the lower part of the mixing drum 3 along the axial direction of the mixing drum 3. Both second gears 8 are fitted with the rack 9. The second motor 21 drives one of the second gears 8 to rotate, and this second gear 8 meshes with the rack 9, thereby driving the mixing drum 3 to rotate. The other second gear 8 rotates under the drive of the rack 9. The two second gears 8 also provide support for the mixing drum 3. To prevent the rack 9 from being exposed to the external environment, an arc-shaped strip 10 is provided above the outer circumference of the mixing drum 3 via a bracket.

[0031] In a further embodiment, the power mechanism also includes a friction belt 4 and pulleys 6. The friction belt 4 is arranged around the outer circumference of the mixing drum 3. Two pulleys 6 are symmetrically arranged at the lower part of the mixing drum 3 along the axis of the mixing drum 3, and the two pulleys 6 cooperate with the friction belt 4. The friction belt 4 and rack 9 are symmetrically arranged at both ends of the mixing drum 3. The pulleys 6 and second gears 8 on the same side are simultaneously fixed on a connecting shaft 7. The two ends of the connecting shaft 7 are rotatably mounted on a support base 22 through bearings. The support base 22 is fixedly mounted on the frame body 1. The second motor 21 drives one of the connecting shafts 7 to rotate, thereby driving the pulleys 6 and second gears 8 on one side to rotate. Under the action of the friction belt 4 and rack 9, the pulleys 6 and second gears 8 on the other side are driven to rotate. The two pulleys 6 also provide support for the mixing drum 3.

[0032] In a preferred embodiment, an annular baffle 5 is provided on the outer circumferential side wall of the stirring drum 3 and on both sides of the friction belt 4. The distance between the two annular baffles 5 corresponds to the width of the pulley 6. The two annular baffles 5 restrict the position of the pulley 6 and prevent the pulley 6 from shifting away from the friction belt 4.

[0033] In a further embodiment, the premixing pipe includes a pyramidal section 13, a straight section 12, and an arc-shaped section 11. The straight section 12 is disposed between the pyramidal section 13 and the arc-shaped section 11. The upper part of the pyramidal section 13 is fixedly connected to the lower part of the screening chamber 2. The end of the arc-shaped section 11 away from the straight section 12 is rotatably connected to the mixing drum 3. The mixing drum 3 and the arc-shaped section 11 are detachably connected. After the soil and cement are fully mixed, the mixing drum 3 and the arc-shaped section 11 are separated, the mixing drum 3 is tilted, and the cement and soil inside the mixing drum 3 are poured out.

[0034] The working principle of a cement-soil mixing device is as follows: First, the raw soil and cement are initially mixed in a certain proportion. Then, a screen 28 with an appropriate mesh size is selected according to the required particle size of the raw soil. The mixture of raw soil and cement enters the screening chamber 2 through the feed inlet. The larger particles of raw soil are crushed into smaller particles by the action of two spiral blades 26. When the rotating shaft 17 rotates, it drives the ball block 23 to contact the screen 28. The ball block 23 impacts the screen 28, and the screen 28 vibrates up and down continuously under the action of the upper and lower springs 29, thereby filtering out the raw soil with the required particle size using the screen 28.

[0035] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A cement-soil mixing device, characterized in that: The machine includes a frame body (1) and a screening component and a stirring component mounted on the frame body (1). The screening component and the stirring component are connected by a premixing pipe. The screening component includes a screening chamber (2), a screen (28), and a spiral blade (26). Two rotatable spiral blades (26) are arranged horizontally side by side in the screening chamber (2) and mesh with each other. The screen (28) is arranged in the screening chamber (2) below the two spiral blades (26).

2. The cement-soil mixing equipment according to claim 1, characterized in that: The spiral blade (26) is rotatably connected to the side wall of the screening chamber (2) via a rotating shaft (17). A connecting sleeve (25) is fixedly sleeved around the rotating shaft (17). A connecting rod (24) is provided on the outer circumferential side wall of the connecting sleeve (25). A ball block (23) is provided at the end of the connecting rod (24) away from the connecting sleeve (25). When the rotating shaft (17) rotates, it drives the ball block (23) to contact the screen (28). A fixed frame is provided around the screen (28). An installation groove (27) adapted to the fixed frame is provided on the inner side wall of the screening chamber (2). Springs (29) are provided at the upper and lower parts of the fixed frame. The end of the spring (29) away from the fixed frame is fixedly connected to the inner side wall of the installation groove (27).

3. The cement-soil mixing equipment according to claim 2, characterized in that: Multiple connecting rods (24) are evenly arranged on the outer circumferential sidewall of the connecting sleeve (25), and the ball block (23) is provided at the other end of each connecting rod (24) away from the connecting sleeve (25).

4. The cement-soil mixing equipment according to claim 3, characterized in that: The ball (23) is made of an elastic material.

5. A cement-soil mixing device according to claim 2, characterized in that: One end of each of the rotating shafts (17) is rotatably connected to the inner wall of the screening chamber (2) via a bearing, and the other end passes through the side wall of the screening chamber (2) and is connected to a first gear (19). The first gears (19) on the two rotating shafts (17) mesh with each other. One of the rotating shafts (17) is also provided with a driven sprocket (18) at its end. A first motor (14) is provided on the outer wall of the screening chamber (2). A drive sprocket (15) is provided at the output end of the first motor (14). The drive sprocket (15) and the driven sprocket (18) are connected by a chain (16).

6. A cement-soil mixing device according to claim 5, characterized in that: The stirring assembly includes a power mechanism, a stirring drum (3), and stirring blades (20). The stirring blades (20) are arranged on the inner wall of the stirring drum (3), and the power mechanism drives the stirring drum (3) to rotate.

7. A cement-soil mixing device according to claim 6, characterized in that: The power mechanism includes a second motor (21), a rack (9), and a second gear (8). The rack (9) is arranged around the outer circumference of the stirring cylinder (3). Two second gears (8) are symmetrically arranged at the lower part of the stirring cylinder (3). Both second gears (8) are fitted with the rack (9). The second motor (21) drives one of the second gears (8) to rotate, and the other second gear (8) rotates under the drive of the rack (9).

8. A cement-soil mixing device according to claim 7, characterized in that: The power mechanism also includes a friction belt (4) and pulleys (6). The friction belt (4) is arranged around the outer circumference of the stirring cylinder (3). Two pulleys (6) are symmetrically arranged at the lower part of the stirring cylinder (3). The two pulleys (6) cooperate with the friction belt (4).

9. A cement-soil mixing device according to claim 8, characterized in that: On the outer circumferential side wall of the stirring drum (3) and on both sides of the friction belt (4), there is a ring of baffles (5), and the distance between the two ring baffles (5) corresponds to the width of the pulley (6).

10. A cement-soil mixing device according to claim 6, characterized in that: The premixing tube includes a pyramidal section (13), a straight section (12), and an arc-shaped section (11). The straight section (12) is located between the pyramidal section (13) and the arc-shaped section (11). The pyramidal section (13) is located at the lower part of the screening chamber (2). The end of the arc-shaped section (11) away from the straight section (12) is rotatably connected to the stirring drum (3).

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