Preparation method and device of composite mineral admixture modified high-strength light foam soil

Abstract

The invention discloses a preparation method and device of composite mineral admixture modified high-strength light foam soil, the device comprises a stirring box, a stirring mechanism comprises a middle position plate, the middle position plate is fixedly connected to the center of the top of an inner cavity of the stirring box, a main motor is installed at the center of the top of the middle position plate, and a power output shaft of the main motor penetrates through the middle position plate; by means of the covering mechanism, homogeneity can be guaranteed, performance development from the surface layer to the core part is guaranteed to be uniform and consistent through sufficient wet curing, the situation that the outer portion is soft and the inner portion is hard or the strength gradient is not uniform is avoided, the structure is simple, operation is convenient, and the cost is low. And meanwhile, the durability is improved, and the compact and non-cracking structure can effectively prevent external moisture, chloride ions and carbon dioxide (causing carbonization) from invading. The freeze-thaw cycle resistance, impermeability and carbonization resistance of the material are remarkably improved, and the service life of the material is prolonged.

Description

Technical Field

[0001] This invention relates to the field of foamed soil preparation technology, specifically to a method and apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures. Background Technology

[0002] Foamed soil, also known as foamed concrete, is a lightweight, porous material. It is formed by introducing a large number of uniform, closed micro-air bubbles (usually using a foaming agent) into cement paste through physical methods, followed by curing and hardening. It has advantages such as being lightweight, providing thermal insulation, sound insulation, and fire resistance, but traditional foamed soil has relatively low strength.

[0003] High-strength lightweight foamed soil modified with mineral admixtures is a high-performance porous cement-based material that combines low density and high compressive strength. It is made by using two or more mineral admixtures such as fly ash, slag powder, and silica fume to optimize the performance of traditional cement foamed soil slurry and through scientific proportioning and foaming process. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: 1. A method for preparing high-strength lightweight foamed soil modified with composite mineral admixtures, characterized by comprising the following steps: S1: Pour cement, composite mineral admixtures, water and additives into the dispensing mechanism. When the dispensing mechanism is running, the raw materials can be quantitatively dispensed. S2: When the raw materials are added, they can be mixed by the mixing mechanism to form a uniform, fine, and fluid slurry, and then the prepared foamed soil can be poured. S3: After the foamed soil is poured, it is allowed to stand for initial setting. A plastic film can be covered on the surface of the foamed soil to retain water, and it should be cured in a humid environment for no less than 7 days. Sufficient humidity curing can ensure the continuous hydration of cementitious materials and admixtures, which is an important guarantee for obtaining high strength.

[0005] 2. A device for preparing high-strength lightweight foamed soil modified with composite mineral admixtures, comprising a mixing tank, wherein the mixing mechanism includes a center plate, the center plate being fixedly connected to the center of the top of the mixing tank cavity, a main motor being installed at the center of the top of the center plate, the power output shaft of the main motor passing through the center plate and extending into the cavity of the mixing tank, a mixing blade being fixedly connected to the power output shaft, the mixing blade being located in the cavity of the mixing tank, a limiting plate being fixedly connected to the left side of the mixing tank near the bottom, the limiting plate having a groove on its surface, side plates being fixedly connected to the center of both the front and rear sides of the center plate, the opposite sides of the two side plates being fixedly connected to the inner sidewall of the mixing tank, and a discharge port being provided at the bottom of the mixing tank near the left side, the discharge port being equipped with a discharge pump.

[0006] Preferably, a discharge pipe is inserted into the top of the center plate near the right side. The discharge pipe has an L-shaped cross-section. Two fixing plates are fixedly connected to both the left and right sides of the mixing tank. The fixing plates are arranged symmetrically front and back. Rollers are hinged to the corresponding side of each fixing plate.

[0007] Preferably, the material dispensing mechanism includes an upper rotating plate, a lower rotating plate is provided at the bottom of the upper rotating plate, two fixed tubes are fixedly connected to the bottom of the upper rotating plate, the two fixed tubes are arranged symmetrically from left to right, two measuring cylinders are provided through the inner cavity of the lower rotating plate and fixedly connected to them, the two measuring cylinders are arranged symmetrically from left to right, and the bottom end of the fixed tube is inserted into the inner cavity of the measuring cylinder.

[0008] Preferably, a feed pipe is attached to the top of the upper rotating plate, a central shaft is fixedly connected to the center of the bottom of the upper rotating plate, a sleeve is provided through the inner cavity of the lower rotating plate and fixedly connected thereto, the bottom end of the central shaft is connected through the inner cavity of the sleeve and a rotating gear is fixedly connected thereto, a bonding plate is fixedly connected to the bottom of the rotating gear, and arc-shaped grooves are provided on both the left and right sides of the bonding plate.

[0009] Preferably, a circular plate is fixedly sleeved on the outer side of the sleeve near the center, and the bottom of the circular plate has a beveled edge. A flip plate is hinged to the outer side of both measuring cylinders near the bottom. A clamping plate is fixedly sleeved on the outer side of the sleeve near the bottom. An L-shaped fixing rod is fixedly connected to the bottom of the circular plate near the edge. The other end of the L-shaped fixing rod is fixedly connected to the clamping plate. A top plate is fixedly connected to the right side of the L-shaped fixing rod. A lifting rod is fixedly attached to the bottom of the top plate. A toothed block is provided on the right side of the lifting rod.

[0010] Preferably, two mounting plates are sleeved on the outer side of the lifting rod. The two mounting plates are arranged symmetrically, with the upper mounting plate sleeved on the outer side of the sleeve and the lower mounting plate sleeved on the outer side of the central shaft. A connecting plate is fixedly connected to the left side of each of the two mounting plates, and the left side of each of the two connecting plates is fixedly connected to the outer side of the feed pipe. A drive gear meshes with the right side of the toothed block. An auxiliary motor is provided behind the drive gear. The power output shaft of the auxiliary motor passes through the drive gear and is fixedly connected to it. Two L-shaped connecting plates are sleeved on the outer side of the power output shaft, and the bottom of each of the two L-shaped connecting plates is fixedly connected to an adjacent mounting plate.

[0011] Preferably, a semi-circular plate is provided on the left side of the bonding plate, an intermittent gear is fixedly connected to the top of the semi-circular plate, a rotating rod is fixedly connected to the center of the bottom of the intermittent gear, a lower motor is provided at the bottom of the rotating rod, the power output shaft of the lower motor is fixedly connected to the rotating rod, a first sleeve plate is sleeved on the outside of the rotating rod, the left side of the first sleeve plate is fixedly connected to the right side of the feed pipe, and two L-shaped connecting plates are fixedly connected to the right side of the mixing tank. The two L-shaped connecting plates are symmetrically arranged front and back, and the front and rear sides of the two mounting plates are fixedly connected to the adjacent L-shaped connecting plates.

[0012] Preferably, the covering mechanism includes a rectangular plate, a clamping motor is installed at the center of the right side of the rectangular plate, the power output shaft of the clamping motor passes through the rectangular plate and is fixedly connected to a rotating plate, cranks are hinged to both sides of the rotating plate, an upper opposing plate is provided at the top of the rotating plate, a lower opposing plate is provided at the bottom of the rotating plate, and the corresponding sides of the upper and lower opposing plates are hinged to the adjacent cranks. Two vertical rods are provided through the inner cavities of the upper and lower opposing plates, the upper opposing plate is fixedly connected to the vertical rods, and a limiting block is sleeved on the outside of the vertical rods. The limiting block is fixedly connected to the rectangular plate.

[0013] Preferably, the bottom ends of the two vertical rods are fixedly connected to a clamping plate, the right side of the rectangular plate is fixedly connected to two insert rods, the slide groove is slidably connected to two movable plates, the two movable plates are symmetrically arranged front and back, the top of the two movable plates is fixedly connected to a welding plate, the insert rods pass through the inner cavity of the welding plate, the inner cavities of the two movable plates are connected to a roller, the outer side of the roller is sleeved with a thin film, and bolt plates are installed on both the front and back sides of the limiting plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves homogeneity through a covering mechanism, ensuring uniform performance development from the surface to the core through thorough wet curing. This avoids situations where the material is "soft on the outside and hard on the inside" or has uneven strength gradients. Simultaneously, it improves durability; the dense, crack-free structure effectively blocks the intrusion of external moisture, chloride ions, and carbon dioxide (which leads to carbonization). This significantly enhances the material's resistance to freeze-thaw cycles, impermeability, and carbonization, extending its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the machine structure of the present invention; Figure 2 This is a schematic diagram of the mixing tank structure of the component of the present invention; Figure 3 This is a schematic diagram of the welding plate structure of the component of the present invention; Figure 4 This is a rear view of the thin film structure of the component of the present invention; Figure 5 This is a schematic diagram of the L-shaped connecting plate structure of the component of the present invention; Figure 6 This is a right view of the upper rotating plate structure of the component of the present invention; Figure 7 This is a plan view of the upper rotating plate structure of the component of the present invention; Figure 8 for Figure 6 Enlarged view of point A in the middle.

[0016] Labels in the diagram: 1. Mixing tank; 2. Fixing plate; 3. Roller; 4. L-shaped connecting plate; 5. Feed pipe; 6. Main motor; 7. Side plate; 8. Center plate; 9. Upper rotating plate; 10. Feed pipe; 11. Limiting plate; 12. Mixing blade; 13. Fixing pipe; 14. Lower rotating plate; 15. Measuring cylinder; 16. Intermittent gear; 17. First set plate; 18. Lower motor; 19. Rotating gear; 20. Connecting plate; 21. Adhesive plate; 22. Mounting plate; 23. Central shaft; 24. L-shaped 25. Connecting plate; 26. Lifting rod; 27. Drive gear; 28. Auxiliary motor; 29. ​​Flipping plate; 30. Circular plate; 31. Clamping plate; 32. Top plate; 33. Semicircular plate; 34. Sleeve; 35. Upper opposing plate; 36. Vertical rod; 37. Insert rod; 38. Welding plate; 49. Limiting block; 40. Lower opposing plate; 41. Clamping plate; 42. Rotating plate; 43. Crank; 44. Rectangular plate; 45. Membrane; 46. Movable plate; 47. Roller; 48. Clamping motor; 49. L-shaped fixing rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-8 The present invention provides a technical solution: 1. A method for preparing high-strength lightweight foamed soil modified with composite mineral admixtures, characterized by comprising the following steps: S1: Pour cement, composite mineral admixtures, water and additives into the dispensing mechanism. When the dispensing mechanism is running, the raw materials can be quantitatively dispensed. S2: When the raw materials are added, they can be mixed by the mixing mechanism to form a uniform, fine, and fluid slurry, and then the prepared foamed soil can be poured. S3: After the foamed soil is poured, it is allowed to stand for initial setting. A plastic film can be covered on the surface of the foamed soil to retain water, and it should be cured in a humid environment for no less than 7 days. Sufficient humidity curing can ensure the continuous hydration of cementitious materials and admixtures, which is an important guarantee for obtaining high strength.

[0019] 2. A device for preparing high-strength lightweight foamed soil modified with composite mineral admixtures, comprising a mixing tank 1, a mixing mechanism including a center plate 8, the center plate 8 being fixedly connected to the top center of the inner cavity of the mixing tank 1, a main motor 6 being installed at the top center of the center plate 8, the power output shaft of the main motor 6 passing through the center plate 8 and extending into the inner cavity of the mixing tank 1, the power output shaft being fixedly connected to a mixing blade 12, the mixing blade 12 being located in the inner cavity of the mixing tank 1, and a limiting plate 11 being fixedly connected to the left side of the mixing tank 1 near the bottom, the limiting plate 11 being surface The surface is provided with a sliding groove. Side plates 7 are fixedly connected to the center of both the front and rear sides of the center plate 8. The opposite sides of the two side plates 7 are fixedly connected to the inner side wall of the mixing tank 1. A discharge port is provided at the bottom of the mixing tank 1 near the left side. A discharge pump is provided at the discharge port. A discharge pipe 5 is inserted at the top of the center plate 8 near the right side. The discharge pipe 5 has an L-shaped cross-section. Two fixing plates 2 are fixedly connected to both the left and right sides of the mixing tank 1. The fixing plates 2 are arranged symmetrically front and back. Rollers 3 are hinged to the corresponding side of the fixing plates 2.

[0020] The material dispensing mechanism includes an upper rotating plate 9, with a lower rotating plate 14 at its bottom. Two fixed tubes 13 are fixedly connected to the bottom of the upper rotating plate 9, arranged symmetrically from left to right. Two measuring cylinders 15 are inserted through the inner cavity of the lower rotating plate 14 and fixedly connected thereto, also arranged symmetrically from left to right. The bottom ends of the fixed tubes 13 are inserted into the inner cavities of the measuring cylinders 15. A feed pipe 10 is attached to the top of the upper rotating plate 9. A central shaft 23 is fixedly connected to the center of the bottom of the upper rotating plate 9. A sleeve 33 is inserted through the inner cavity of the lower rotating plate 14 and fixedly connected thereto. The bottom end of the central shaft 23 passes through the inner cavity of the sleeve 33. A rotating gear 19 is fixedly connected to the sleeve 33. A bonding plate 21 is fixedly connected to the bottom of the rotating gear 19. The bonding plate 21 has arc-shaped grooves on both the left and right sides. A circular plate 29 is fixedly fitted to the outside of the sleeve 33 near the center. The bottom of the circular plate 29 has a beveled edge. A flipping plate 28 is hinged to the outside of the two measuring cylinders 15 near the bottom. A clamping plate 30 is fixedly fitted to the outside of the sleeve 33 near the bottom. An L-shaped fixing rod 48 is fixedly connected to the bottom of the circular plate 29 near the edge. The other end of the L-shaped fixing rod 48 is fixedly connected to the clamping plate 30. A top plate 31 is fixedly connected to the right side of the L-shaped fixing rod 48. A lifting rod 25 is fixedly attached to the bottom of the top plate 31. A toothed block is provided on the right side. Two mounting plates 22 are sleeved on the outside of the lifting rod 25. The two mounting plates 22 are symmetrically arranged, with the upper mounting plate 22 sleeved on the outside of the sleeve 33 and the lower mounting plate 22 sleeved on the outside of the central shaft 23. A connecting plate 20 is fixedly connected to the left side of each mounting plate 22. The left side of each connecting plate 20 is fixedly connected to the outside of the feed pipe 5. A drive gear 26 meshes on the right side of the toothed block. An auxiliary motor 27 is provided behind the drive gear 26. The power output shaft of the auxiliary motor 27 passes through the drive gear 26 and is fixedly connected to it. Two L-shaped connecting plates 24 are sleeved on the outside of the power output shaft. The bottom of plate 24 is fixedly connected to the adjacent mounting plate 22. A semi-circular plate 32 is provided on the left side of the bonding plate 21. An intermittent gear 16 is fixedly connected to the top of the semi-circular plate 32. A rotating rod is fixedly connected to the center of the bottom of the intermittent gear 16. A lower motor 18 is provided at the bottom of the rotating rod. The power output shaft of the lower motor 18 is fixedly connected to the rotating rod. A first set of plates 17 is sleeved on the outside of the rotating rod. The left side of the first set of plates 17 is fixedly connected to the right side of the feed pipe 5. Two L-shaped connecting plates 4 are fixedly connected to the right side of the mixing tank 1. The two L-shaped connecting plates 4 are symmetrically arranged front and back. The front and rear sides of the two mounting plates 22 are fixedly connected to the adjacent L-shaped connecting plates 4.

[0021] The covering mechanism includes a rectangular plate 43. A clamping motor 47 is installed at the center of the right side of the rectangular plate 43. The power output shaft of the clamping motor 47 passes through the rectangular plate 43 and is fixedly connected to a rotating plate 41. Cranks 42 are hinged to both sides of the rotating plate 41. An upper opposing plate 34 is provided at the top of the rotating plate 41, and a lower opposing plate 39 is provided at the bottom of the rotating plate 41. The corresponding sides of the upper opposing plate 34 and the lower opposing plate 39 are hinged to the adjacent cranks 42. Two vertical rods 35 are provided through the inner cavities of the upper opposing plate 34 and the lower opposing plate 39. The upper opposing plate 34 and the vertical rods 35 The vertical rod 35 is fixedly connected to a limiting block 38 on its outer side. The limiting block 38 is fixedly connected to the rectangular plate 43. The bottom ends of the two vertical rods 35 are fixedly connected to a clamping plate 40. The right side of the rectangular plate 43 is fixedly connected to two insert rods 36. The sliding groove connects two movable plates 45. The two movable plates 45 are symmetrically arranged front and back. The top of the two movable plates 45 is fixedly connected to a welding plate 37. The insert rods 36 pass through the inner cavity of the welding plate 37. The inner cavities of the two movable plates 45 are connected to a roller 46. The outer side of the roller 46 is fitted with a membrane 44. Bolt plates are installed on both the front and back sides of the limiting plate 11.

[0022] Working principle: When the lower motor 18 starts, it drives the intermittent gear 16 and the semi-circular plate 32 to rotate synchronously via the power output shaft. When the intermittent gear 16 rotates, it drives the rotating gear 19 to rotate. When the rotating gear 19 rotates, it drives the central shaft 23 to rotate. When the central shaft 23 rotates, it drives the upper rotating plate 9 and the lower rotating plate 14 to rotate. When the lower rotating plate 14 rotates and moves, it drives the two measuring cylinders 15 to move. When the measuring cylinders 15 move, the flipping plate 28 can move and fit against the bottom of the circular plate 29. When the flipping plate 28 contacts the inclined edge of the bottom of the circular plate 29, it can flip, thereby pouring the raw materials inside the fixed tube 13 and the measuring cylinders 15 into the inner cavity of the feeding tube 5 and into the mixing tank 1. When it is necessary to adjust the capacity of the measuring cylinder 15, the auxiliary motor 27 can be started to drive the drive gear 26 to rotate. When the drive gear 26 rotates, it meshes with the tooth block, thereby driving the lifting rod 25 to move upward. When the lifting rod 25 moves, it can drive the circular plate 29 through the L-shaped fixed rod 48. The circular plate 29 can move the sleeve 33 upward, and the sleeve 33 can move the lower rotating plate 14 upward. When the lower rotating plate 14 moves, it can move the measuring cylinder 15 upward, thereby reducing the space inside the measuring cylinder 15 and the fixed tube 13 and realizing the adjustment of capacity. When the main motor 6 starts, it can drive the stirring blade 12 to rotate through the power output shaft, thereby stirring the raw materials. When the clamping motor 47 starts, it can drive the rotating plate 41 to rotate. When the rotating plate 41 rotates, it can drive the upper opposing plate 34 and the lower opposing plate 39 to move in opposite directions through the two cranks 42. Since the upper opposing plate 34 and the vertical rod 35 are fixedly connected, when the upper opposing plate 34 moves upward, it can drive the clamping plate 40 to move upward through the two vertical rods 35. When the lower opposing plate 39 moves downward, it can cooperate with the clamping plate 40 to fix and clamp the film 44. The operator can remove the covering mechanism and fix it in place, and then push the device body to move, thereby covering the foam soil with the film.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing high-strength lightweight foamed soil modified with composite mineral admixtures, characterized in that, Includes the following steps: S1: Pour cement, composite mineral admixtures, water and additives into the dispensing mechanism. When the dispensing mechanism is running, the raw materials can be quantitatively dispensed. S2: When the raw materials are added, they can be mixed by the mixing mechanism to form a uniform, fine, and fluid slurry, and then the prepared foamed soil can be poured. S3: After the foamed soil is poured, it is allowed to stand for initial setting. A plastic film can be covered on the surface of the foamed soil to retain water, and it should be cured in a humid environment for no less than 7 days. Sufficient humidity curing can ensure the continuous hydration of cementitious materials and admixtures, which is an important guarantee for obtaining high strength.

2. A device for preparing high-strength lightweight foamed soil modified with composite mineral admixtures, comprising a mixing tank (1), characterized in that: The stirring mechanism includes a center plate (8), which is fixedly connected to the center of the top of the mixing tank (1). A main motor (6) is installed at the center of the top of the center plate (8). The power output shaft of the main motor (6) passes through the center plate (8) and extends to the inner cavity of the mixing tank (1). A stirring blade (12) is fixedly connected to the power output shaft. The stirring blade (12) is located in the inner cavity of the mixing tank (1). A limiting plate (11) is fixedly connected to the left side of the mixing tank (1) near the bottom. A sliding groove is provided on the surface of the limiting plate (11). Side plates (7) are fixedly connected to the center of both the front and rear sides of the center plate (8). The two side plates (7) are fixedly connected to the inner side wall of the mixing tank (1) on opposite sides. A discharge port is provided at the bottom of the mixing tank (1) near the left side. A discharge pump is provided at the discharge port.

3. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 2, characterized in that: The middle plate (8) is connected to a feed pipe (5) near the right side of the top. The feed pipe (5) has an L-shaped cross section. The mixing box (1) is fixedly connected to two fixing plates (2) on both the left and right sides. The fixing plates (2) are arranged symmetrically front and back. Rollers (3) are hinged to the corresponding side of the fixing plates (2).

4. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 3, characterized in that: The material distribution mechanism includes an upper rotating plate (9), and a lower rotating plate (14) is provided at the bottom of the upper rotating plate (9). Two fixed tubes (13) are fixedly connected to the bottom of the upper rotating plate (9). The two fixed tubes (13) are arranged symmetrically on the left and right. Two measuring cylinders (15) are provided through the inner cavity of the lower rotating plate (14) and are fixedly connected to it. The two measuring cylinders (15) are arranged symmetrically on the left and right. The bottom end of the fixed tube (13) is inserted into the inner cavity of the measuring cylinder (15).

5. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 4, characterized in that: The upper rotating plate (9) has a feed pipe (10) attached to its top. A central shaft (23) is fixedly connected to the center of the bottom of the upper rotating plate (9). A sleeve (33) is provided through the inner cavity of the lower rotating plate (14) and is fixedly connected to it. The bottom end of the central shaft (23) passes through the inner cavity of the sleeve (33) and is fixedly connected to a rotating gear (19). A bonding plate (21) is fixedly connected to the bottom of the rotating gear (19). Arc grooves are provided on both the left and right sides of the bonding plate (21).

6. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 5, characterized in that: A circular plate (29) is fixedly sleeved on the outside of the sleeve (33) near the center. The bottom of the circular plate (29) is provided with a bevel. A flip plate (28) is hinged on the outside of the two measuring cylinders (15) near the bottom. A clamping plate (30) is fixedly sleeved on the outside of the sleeve (33) near the bottom. An L-shaped fixing rod (48) is fixedly connected to the bottom of the circular plate (29) near the edge. The other end of the L-shaped fixing rod (48) is fixedly connected to the clamping plate (30). A top plate (31) is fixedly connected to the right side of the L-shaped fixing rod (48). A lifting rod (25) is fixedly attached to the bottom of the top plate (31). A toothed block is provided on the right side of the lifting rod (25).

7. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 6, characterized in that: Two mounting plates (22) are sleeved on the outside of the lifting rod (25). The two mounting plates (22) are arranged symmetrically, with the upper mounting plate (22) sleeved on the outside of the sleeve (33) and the lower mounting plate (22) sleeved on the outside of the central shaft (23). A connecting plate (20) is fixedly connected to the left side of each of the two mounting plates (22). The left side of each of the two connecting plates (20) is fixedly connected to the outside of the feed pipe (5). A drive gear (26) meshes with the right side of the tooth block. An auxiliary motor (27) is provided on the rear side of the drive gear (26). The power output shaft of the auxiliary motor (27) passes through the drive gear (26) and is fixedly connected to it. Two L-shaped connecting plates (24) are sleeved on the outside of the power output shaft. The bottom of each of the two L-shaped connecting plates (24) is fixedly connected to the adjacent mounting plate (22).

8. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 7, characterized in that: A semicircular plate (32) is provided on the left side of the bonding plate (21). An intermittent gear (16) is fixedly connected to the top of the semicircular plate (32). A rotating rod is fixedly connected to the center of the bottom of the intermittent gear (16). A lower motor (18) is provided at the bottom of the rotating rod. The power output shaft of the lower motor (18) is fixedly connected to the rotating rod. A first sleeve plate (17) is sleeved on the outside of the rotating rod. The left side of the first sleeve plate (17) is fixedly connected to the right side of the feed pipe (5). Two L-shaped connecting plates (4) are fixedly connected to the right side of the mixing tank (1). The two L-shaped connecting plates (4) are symmetrically arranged front and back. The front and back sides of the two mounting plates (22) are fixedly connected to the adjacent L-shaped connecting plates (4).

9. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 1, characterized in that: The covering mechanism includes a rectangular plate (43), a clamping motor (47) is installed at the center of the right side of the rectangular plate (43), the power output shaft of the clamping motor (47) passes through the rectangular plate (43) and is fixedly connected to a rotating plate (41), cranks (42) are hinged on both sides of the rotating plate (41), an upper opposing plate (34) is provided at the top of the rotating plate (41), and a lower opposing plate (39) is provided at the bottom of the rotating plate (41). The corresponding side of the upper opposing plate (34) and the lower opposing plate (39) is hinged to the adjacent crank (42). Two vertical rods (35) are provided through the inner cavity of the upper opposing plate (34) and the lower opposing plate (39). The upper opposing plate (34) is fixedly connected to the vertical rods (35). A limit block (38) is sleeved on the outside of the vertical rods (35). The limit block (38) is fixedly connected to the rectangular plate (43).

10. The apparatus for preparing high-strength lightweight foamed soil modified with composite mineral admixtures according to claim 9, characterized in that: The bottom ends of the two vertical rods (35) are fixedly connected to a clamp plate (40). The right side of the rectangular plate (43) is fixedly connected to two insert rods (36). The slide groove is slidably connected to two movable plates (45). The two movable plates (45) are symmetrically arranged front and back. The top of the two movable plates (45) is fixedly connected to a welding plate (37). The insert rod (36) passes through the inner cavity of the welding plate (37). The inner cavities of the two movable plates (45) are connected to a roller (46). A film (44) is sleeved on the outside of the roller (46). Bolt plates are installed on both the front and rear sides of the limiting plate (11).

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