A fluidized solidified soil processing and pouring device

Abstract

The present application relates to the technical field of building pouring technology, and particularly relates to a processing and pouring device for fluidized solidified soil, which comprises a storage box, lifting rings installed on the left and right sides of the storage box, a stirring assembly fixedly installed on the upper end inside the storage box, the stirring assembly being used for primary stirring and downward conveying of the fluidized solidified soil inside the storage box, a mixed pouring assembly fixedly installed on the lower end of the storage box, and a through hole being formed in the middle of the storage box and being in communication with the mixed pouring assembly. The present application is characterized in that a flow guide plate with a microporous ceramic structure is arranged on the two sides inside the storage box, and a collection cavity is formed between the flow guide plate and the inner wall of the storage box. When the fluidized solidified soil is stratified and separated, the separated liquid separated from the upper layer can automatically penetrate into the collection cavity through the microporous ceramic structure and be temporarily stored, and meanwhile, the separated liquid in the collection cavity is actively pumped into the mixed box inside through a liquid injection unit, so that the problem of water-cement ratio imbalance caused by separation is solved, and the performance consistency of the poured body is ensured.

Description

Technical Field

[0001] This application relates to the field of building casting technology, and in particular to a fluidized solidified soil processing and casting device. Background Technology

[0002] Fluidized solidified soil is a new type of geotechnical engineering material that utilizes raw materials such as engineering waste soil, industrial waste residue, or fine sand, mixed with an appropriate amount of solidifying agent and water, and then formed through mixing. It possesses fluidity and self-compacting properties. Due to its advantages such as fast construction speed, no need for vibration compaction, high backfill quality, and strong adaptability to complex spaces, it is widely used in engineering fields such as trench backfilling, narrow foundation pit backfilling, bridge abutment backfilling, and mining subsidence area remediation.

[0003] Currently, the construction of fluidized solidified soil typically involves centralized mixing followed by transportation to the site in tank trucks, and then pouring the mixture using methods such as chutes, pumps, or direct dumping. However, existing technologies have the following prominent problems in practical applications: 1. As a suspended slurry material, fluidized solidified soil has a significant density difference between its solid particles and water. During the long-distance and long-term transportation from the mixing plant to the construction site, and during the stagnant phase while waiting for pouring, fluidized solidified soil is highly prone to segregation. This means that the denser solid particles settle to the bottom, while the less dense water or admixture solution rises to the top. Directly pouring segregated fluidized solidified soil will result in uneven performance between the upper and lower layers of the poured body—lower strength in the upper layer and an increased risk of shrinkage cracking in the lower layer—seriously affecting backfill quality and project safety.

[0004] 2. Currently, the storage bins or intermediate hoppers commonly used on engineering sites only have simple storage and discharge functions. Although some devices are equipped with mixing mechanisms, they are mostly single mixing modes and cannot uniformly mix the separated liquid back into the slurry just before pouring. Even if segregation occurs in the fluidized solidified soil, there is a lack of dedicated mixing devices and liquid injection structures for remedial treatment.

[0005] To address the aforementioned problems, this invention proposes a fluidized solidified soil processing and casting device that can effectively compensate for the material composition of the fluidized solidified soil before casting, recycle the separated liquid, and achieve secondary forced mixing, thus solving the engineering quality problems caused by stratification and segregation. Summary of the Invention

[0006] To address the problems existing in the background art, the present invention proposes a fluidized solidified soil processing and pouring device.

[0007] The fluidized solidified soil processing and casting device provided in this application adopts the following technical solution: A fluidized solidified soil processing and pouring device includes: a storage tank and lifting rings installed on the left and right sides of the storage tank, and further includes: The mixing assembly is fixedly installed inside the upper part of the storage tank. The mixing assembly is used to initially mix the fluidized solidified soil inside the storage tank and to convey it downward. The mixing and casting component is fixedly installed at the lower end of the storage box. The storage box has a through hole in the middle that communicates with the mixing and casting component. The mixing component transports the fluidized solidified soil inside the storage box to the mixing and casting component through the through hole. The mixing and casting component is used to perform secondary mixing of the fluidized solidified soil to avoid stratification and segregation.

[0008] Furthermore, inclined guide plates are installed on the left and right sides inside the storage tank. The guide plates are detachable, and the upper part of the guide plates is a porous microporous ceramic. A collection chamber is formed between the inner side of the guide plates and the storage tank. The separated liquid after stratification enters the collection chamber through the microporous ceramic.

[0009] Furthermore, the stirring assembly includes a horizontal plate, a drive motor, a rotating shaft, a sleeve, and a stirring frame. The upper end of the storage tank is equipped with a horizontal plate, the upper end of which is equipped with a drive motor via a motor mount, and the lower end of the horizontal plate is fixedly equipped with a sleeve. A rotating shaft is installed inside the sleeve via a bearing. The upper end of the rotating shaft is connected to the output shaft of the drive motor, and the lower end of the rotating shaft is evenly equipped with stirring frames.

[0010] Furthermore, the mixing and casting assembly includes a mixing box, a guide frame, a mixing rack, a liquid injection unit, and a casting unit. The mixing box is fixedly installed in the middle of the lower end of the storage box. The inner wall of the mixing box is evenly provided with installation grooves, and the guide frame is fixedly installed in the installation grooves. The mixing rack is fixedly installed at the lower end of the rotating shaft. Liquid injection units are symmetrically installed on the left and right sides of the lower end of the storage box. The liquid injection units are used to inject the separated liquid collected in the collection chamber into the mixing box for secondary mixing. The fluidized solidified soil after secondary mixing is discharged and cast by the casting unit.

[0011] Furthermore, the guide frame includes a rectangular plate and a guide plate. The rectangular plate is installed inside the mounting groove, and the guide plate is installed on the inner side of the rectangular plate. The guide plate is arranged at an angle, and an inclined bevel is provided at the lower end of the guide plate.

[0012] Furthermore, a connector is installed on the outer side of the rectangular plate, and an injection port communicating with the connector is opened on the inner side of the rectangular plate.

[0013] Furthermore, the outlet of the injection port is located on the back side of the guide plate, and a retractable conical plug is installed inside the injection port.

[0014] Furthermore, the injection unit includes an injection pump, a first conduit, a second conduit, and an annular frame. The injection pump is fixedly installed at the lower end of the storage tank. The input end of the injection pump is connected to the inside of the collection chamber through the first conduit, and the output end of the injection pump is connected to the annular frame through the second conduit. The annular frame is installed on the outside of the mixing tank, and the plug-in frame is connected to the inside of the annular frame.

[0015] Furthermore, the casting unit includes a corrugated pipe, a conveying pipe, and a conveying auger. A corrugated pipe is fixedly installed at the lower end of the mixing box. The corrugated pipe has a conical structure. A conveying pipe is installed at the lower end of the corrugated pipe. A conveying auger is fixedly installed at the lower end of the mixing frame. The conveying auger extends through the corrugated pipe into the interior of the conveying pipe.

[0016] Beneficial effects Compared with the prior art, the present invention provides a fluidized solidified soil processing and casting device, which has the following beneficial effects: 1. In this invention, by setting guide plates with microporous ceramic structures on both sides inside the storage tank and forming a collection cavity between the guide plates and the inner wall of the storage tank, when the fluidized solidified soil undergoes stratification and segregation, the separated liquid precipitated from the upper layer can automatically pass through the microporous ceramics into the collection cavity for temporary storage, avoiding material waste and environmental pollution caused by direct loss of the separated liquid; at the same time, the separated liquid in the collection cavity is actively pumped into the mixing tank through the liquid injection unit to be mixed with the solidified soil for secondary mixing, realizing the accurate restoration of the material ratio, effectively solving the problem of water-cement ratio imbalance caused by segregation, and ensuring the performance consistency of the cast body.

[0017] 2. In this invention, a mixing chamber is set at the lower end of the storage box, and a guide frame and a mixing frame are installed inside the mixing chamber to form a secondary mixing chamber. At the same time, the liquid injection port is opened on the back side of the guide plate. Liquid is injected into the hollow area naturally formed on the back side of the guide plate when the mixing frame rotates, so that the separation liquid can be accurately injected while reducing the blockage phenomenon. The separation liquid and the fluidized solidified soil are forcibly mixed twice before pouring, eliminating the segregation phenomenon that occurs during transportation and standing, improving the uniformity of the fluidized solidified soil, thereby ensuring the overall strength and stability of the backfill layer. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of this application.

[0020] Figure 2 This is a cross-sectional structural diagram of this application.

[0021] Figure 3 This is a schematic diagram of the planar structure of this application.

[0022] Figure 4 This application Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0023] Figure 5 This is a cross-sectional structural diagram of the hybrid casting component of this application.

[0024] Figure 6 This is a three-dimensional structural diagram of the material guide rack in this application.

[0025] Figure 7 This is a schematic diagram of the planar structure of the material guide frame in this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Storage bin; 11. Guide plate; 2. Lifting ring; 3. Mixing assembly; 31. Horizontal plate; 32. Drive motor; 33. Rotating shaft; 34. Sleeve; 35. Mixing rack; 4. Mixing and casting assembly; 41. Mixing box; 42. Material guide rack; 421. Rectangular plate; 422. Material guide plate; 423. Insertion frame; 424. Injection port; 43. Mixing rack; 44. Injection unit; 441. Injection pump; 442. Conduit 1; 443. Conduit 2; 444. Annular frame; 45. Casting unit; 451. Corrugated pipe; 452. Conveying pipe; 453. Conveying auger. Detailed Implementation

[0027] 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.

[0028] like Figures 1 to 7 As shown, this embodiment provides a fluidized solidified soil processing and pouring device, including a storage tank 1 and lifting rings 2 installed on the left and right sides of the storage tank 1. The device also includes a mixing component 3 and a mixing and pouring component 4.

[0029] like Figures 1 to 2 As shown, the mixing assembly 3 is fixedly installed inside the upper part of the storage tank 1. The mixing assembly 3 is used to perform initial mixing of the fluidized solidified soil stored inside the storage tank 1 to prevent it from undergoing initial settling during the storage stage. At the same time, the downward thrust generated by the mixing is used to transport the fluidized solidified soil to the bottom of the storage tank 1.

[0030] The mixing and casting component 4 is fixedly installed at the lower end of the storage box 1. In order to realize the flow of materials, a through hole is vertically opened in the middle of the storage box 1, which communicates with the interior of the mixing and casting component 4. The mixing component 3 transports the fluidized solidified soil inside the storage box 1 through the through hole to the interior of the mixing and casting component 4. The mixing and casting component 4 is used to perform secondary forced mixing of the fluidized solidified soil to eliminate the stratification and segregation that may occur during the transportation process and ensure the uniformity of the casting material.

[0031] like Figures 2-4As shown, inclined downward-arranged guide plates 11 are also installed on the left and right sides inside the storage tank 1. The guide plates 11 are detachably connected to the inner wall of the storage tank 1, for example, by means of a slot or bolt, to facilitate later maintenance and cleaning. The upper part of the guide plate 11 is made of a porous microporous ceramic material. The inner side of the guide plate 11 and the inner wall of the storage tank 1 form a closed collection cavity. When the fluidized solidified soil undergoes stratification during static or preliminary stirring, the separated liquid (such as water or additive solution) precipitated from the upper layer can permeate through the microporous structure of the microporous ceramic into the collection cavity and be temporarily stored so that it can be re-injected during subsequent secondary mixing to achieve accurate restoration of the proportion.

[0032] Specifically, such as Figure 4 As shown, the stirring assembly 3 includes a horizontal plate 31, a drive motor 32, a rotating shaft 33, a sleeve 34, and stirring racks 35. The horizontal plate 31 is fixedly installed at the upper opening of the storage tank 1. The drive motor 32 is installed at the upper end of the horizontal plate 31 via a motor mount. A vertically arranged sleeve 34 is fixedly installed at the center of the lower end of the horizontal plate 31. The rotating shaft 33 is rotatably installed inside the sleeve 34 via a bearing. The upper end of the rotating shaft 33 is connected to the output shaft of the drive motor 32 via a coupling. The lower end of the rotating shaft 33 passes through the through hole of the storage tank 1 and extends downward. Multiple stirring racks 35 are evenly fixedly installed along the circumference of the lower end of the rotating shaft 33. The stirring racks 35 are located at the lower end of the storage tank 1 and are used for preliminary stirring and downward conveying of materials.

[0033] Furthermore, such as Figures 4-5 As shown, the mixing and casting assembly 4 includes a mixing tank 41, a guide frame 42, a mixing rack 43, a liquid injection unit 44, and a casting unit 45. The lower middle part of the storage tank 1 is fixedly connected to the upper end of the mixing tank 41, and the through hole communicates with the internal cavity of the mixing tank 41. Multiple vertical or inclined mounting slots are evenly opened along the circumference on the inner wall of the mixing tank 41, and a guide frame 42 is fixedly installed in each mounting slot. The lower end of the rotating shaft 33 passes downward through the interior of the mixing tank 41 and is fixedly installed with the mixing rack 43. The mixing frame 43 is located inside the guide frame 42; two injection units 44 are symmetrically installed on the left and right sides of the lower end of the storage tank 1. Each injection unit 44 is connected to the bottom of the collection chamber on the corresponding side. The injection unit 44 is used to extract the separated liquid collected inside the collection chamber and inject it into the interior of the mixing tank 41, so that it is mixed with the thick slurry coming down from the storage tank 1 for secondary mixing. After secondary mixing and uniform mixing, the fluidized solidified soil is finally discharged and poured through the pouring unit 45 installed at the lower end of the mixing tank 41.

[0034] More specifically, such as Figures 6-7As shown, the guide frame 42 includes a rectangular plate 421 and a guide plate 422. The rectangular plate 421 is detachably installed inside the mounting groove by screws or clips. The guide plate 422 is fixedly installed on the inner side of the rectangular plate 421 (the side facing the center of the mixing box 41). The guide plate 422 is arranged at an angle upward. The lower end of the guide plate 422 is provided with an inclined bevel. This bevel structure helps to reduce fluid resistance and guide the material flow to the middle and lower part of the mixing box 41.

[0035] like Figures 6-7 As shown, a connector 423 is also installed on the outer side of the rectangular plate 421. The connector 423 is used for quick connection with the external liquid supply pipeline. An injection port 424 communicating with the connector 423 is also provided on the inner side of the rectangular plate 421. The injection port 424 is located on the back side of the guide plate 422 (i.e., in the angle area between the guide plate 422 and the rectangular plate 421).

[0036] When the mixing rack 43 rotates and stirs the fluidized solidified soil, the soil will move upwards mainly along the upper surface of the guide plate 422 due to centrifugal force and the obstruction of the guide plate 422. This automatically forms a low-pressure or even void area on the back side of the guide plate 422. This area exposes the outlet of the injection port 424 to a space with lower fluid pressure, which greatly facilitates the injection unit 44 to smoothly inject the separated liquid into the mixing tank 41, effectively preventing the thick fluidized solidified soil from directly clogging the injection port 424. 24 ensures that the separated liquid can be back-mixed in a timely and quantitative manner, ensuring the final mixing uniformity of the fluidized solidified soil before pouring; in addition, a retractable conical plug is installed inside the injection port 424. When the injection unit 44 starts pumping liquid, the conical plug is pushed forward under the action of liquid pressure, thereby opening the injection channel; when the injection stops, the conical plug automatically resets under the action of spring or material elasticity to close the injection port 424, preventing the material in the mixing box 41 from flowing back into the injection pipeline.

[0037] like Figure 5 As shown, the injection unit 44 includes an injection pump 441, a first conduit 442, a second conduit 443, and an annular frame 444. The injection pump 441 is fixedly installed at the lower end of the storage tank 1 by a bracket. The input end of the injection pump 441 is connected to the lower part of the collection chamber through the first conduit 442, and the output end of the injection pump 441 is connected to the annular frame 444 through the second conduit 443. The annular frame 444 is an annular hollow pipe and is fixedly installed on the outer wall of the mixing tank 41. The outer end of the plug-in frame 423 is sealed and connected to the inside of the annular frame 444. Thus, the injection pump 441 injects the separated liquid in the collection chamber sequentially through the first conduit 442, the second conduit 443, the annular frame 444, and the plug-in frame 423, and finally injects it into the interior of the mixing tank 41 from the injection port 424.

[0038] like Figure 5 As shown, the pouring unit 45 includes a corrugated pipe 451, a conveying pipe 452, and a conveying auger 453. The corrugated pipe 451 is fixedly installed at the lower center of the mixing box 41. The corrugated pipe 451 has a tapered structure that is larger at the top and smaller at the bottom, and has a certain ability to expand and contract, so as to adjust the position of the pouring point during the pouring process. The conveying pipe 452 is fixedly installed at the lower end of the corrugated pipe 451. The lower end of the central shaft of the mixing frame 43 extends downward and is fixedly installed with the conveying auger 453. The conveying auger 453 coaxially passes through the interior of the corrugated pipe 451 and extends to the lower end of the interior of the conveying pipe 452. When rotating, the conveying auger 453 can provide continuous downward conveying pressure to the fluidized solidified soil after secondary mixing, prevent pipe blockage, and realize continuous and stable pouring operation.

[0039] The specific steps for using this invention are as follows: S1. Material loading and initial mixing The premixed fluidized solidified soil is injected into the storage tank 1. The drive motor 32 is started. The drive motor 32 drives the mixing frame 35 to rotate through the rotating shaft 33. The mixing frame 35 performs initial mixing of the fluidized solidified soil inside the storage tank 1 to prevent the fluidized solidified soil from initially settling during the storage stage. At the same time, the downward thrust generated by the mixing transports the fluidized solidified soil to the through hole in the middle of the lower part of the storage tank 1.

[0040] S2. Collection and storage of the separated liquid During the mixing and settling process, the fluidized solidified soil undergoes stratification and segregation. The separated liquid precipitated from the upper layer permeates through the microporous ceramic structure at the upper end of the guide plate 11 into the collection cavity formed between the guide plate 11 and the inner wall of the storage tank 1, thereby achieving temporary storage of the separated liquid and preventing direct loss of the separated liquid that could lead to an imbalance in the material ratio.

[0041] S3, Secondary Mixing and Injection The fluidized solidified soil enters the mixing box 41 through the through hole. The rotating shaft 33 drives the mixing frame 43 to rotate. The mixing frame 43 and the guide frame 42 cooperate to perform forced shearing and mixing of the fluidized solidified soil. At the same time, the injection unit 44 is started. The injection pump 441 extracts the separated liquid from the collection chamber through the first conduit 442, and then sends it to the injection port 424 through the second conduit 443, the ring frame 444 and the plug frame 423. The separated liquid is sprayed into the mixing box 41 from the injection port 424 and mixed with the fluidized solidified soil for a second time to eliminate the segregation phenomenon and ensure the uniformity of mixing.

[0042] S4, Anti-clogging injection guarantee During the injection process, under the action of liquid pressure, the conical plug inside the injection port 424 is pushed open, and the separated liquid is injected smoothly. Since the outlet of the injection port 424 is located on the back side of the guide plate 422, when the mixing frame 43 drives the fluidized solidified soil to stir, the fluidized solidified soil moves along the upper end face of the guide plate 422, forming a hollow area on the back side of the guide plate 422, thus preventing the fluidized solidified soil from blocking the injection port 424.

[0043] S5, Continuous pouring and discharge After being mixed evenly in the second stage, the fluidized solidified soil enters the corrugated pipe 451 and the conveying pipe 452 downwards. The rotating shaft 33 drives the conveying auger 453 to rotate. The conveying auger 453 provides continuous downward forced conveying pressure to the fluidized solidified soil, and finally the fluidized solidified soil is continuously and stably discharged from the lower end of the conveying pipe 452 for pouring operations.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for processing and casting fluidized solidified soil, characterized in that, include: The storage bin (1) and the lifting rings (2) installed on the left and right sides of the storage bin (1) also include: The mixing assembly (3) is fixedly installed inside the upper part of the storage tank (1). The mixing assembly (3) is used to initially mix the fluidized solidified soil inside the storage tank (1) and transport it downward. The mixing and casting component (4) is fixedly installed at the lower end of the storage box (1). The storage box (1) has a through hole in the middle that communicates with the mixing and casting component (4). The mixing component (3) transports the fluidized solidified soil inside the storage box (1) to the mixing and casting component (4) through the through hole. The mixing and casting component (4) is used to perform secondary mixing of the fluidized solidified soil to avoid stratification and segregation.

2. The fluidized solidified soil processing and casting device according to claim 1, characterized in that: The storage tank (1) is also equipped with inclined guide plates (11) on the left and right sides. The guide plates (11) are detachable. The upper end of the guide plate (11) is a porous microporous ceramic. A collection chamber is formed between the inner side of the guide plate (11) and the storage tank (1). The separated liquid after stratification enters the collection chamber through the microporous ceramic.

3. The fluidized solidified soil processing and casting device according to claim 2, characterized in that: The stirring assembly (3) includes a horizontal plate (31), a drive motor (32), a rotating shaft (33), a sleeve (34), and a stirring rack (35). The storage box (1) is equipped with a horizontal plate (31) at its upper end. The drive motor (32) is mounted on the upper end of the horizontal plate (31) through a motor mount. The sleeve (34) is fixedly installed at the lower end of the horizontal plate (31). The rotating shaft (33) is installed inside the sleeve (34) through a bearing. The upper end of the rotating shaft (33) is connected to the output shaft of the drive motor (32). The stirring rack (35) is evenly installed at the lower end of the rotating shaft (33).

4. The fluidized solidified soil processing and casting device according to claim 3, characterized in that: The mixing and casting assembly (4) includes a mixing box (41), a guide frame (42), a mixing rack (43), a liquid injection unit (44), and a casting unit (45). The mixing box (41) is fixedly installed in the middle of the lower end of the storage box (1). The mixing box (41) has a uniformly opened installation groove on the inner wall of the mixing box (41). The guide frame (42) is fixedly installed in the installation groove. The mixing rack (43) is fixedly installed at the lower end of the rotating shaft (33). The liquid injection unit (44) is symmetrically installed on the left and right sides of the lower end of the storage box (1). The liquid injection unit (44) is used to inject the separated liquid collected in the collection chamber into the mixing box (41) for secondary mixing. The fluidized solidified soil after secondary mixing is discharged and cast through the casting unit (45).

5. The fluidized solidified soil processing and casting device according to claim 4, characterized in that: The guide frame (42) includes a rectangular plate (421) and a guide plate (422). The rectangular plate (421) is installed inside the mounting groove. The guide plate (422) is installed on the inner side of the rectangular plate (421). The guide plate (422) is arranged at an angle and has an inclined bevel at the lower end.

6. The fluidized solidified soil processing and casting device according to claim 5, characterized in that: A plug-in bracket (423) is also installed on the outer side of the rectangular plate (421), and an injection port (424) communicating with the plug-in bracket (423) is also provided on the inner side of the rectangular plate (421).

7. The fluidized solidified soil processing and casting device according to claim 6, characterized in that: The outlet of the injection port (424) is located on the back side of the guide plate (422), and a retractable conical plug is installed inside the injection port (424).

8. The fluidized solidified soil processing and casting device according to claim 7, characterized in that: The injection unit (44) includes an injection pump (441), a first conduit (442), a second conduit (443), and an annular frame (444). The injection pump (441) is fixedly installed at the lower end of the storage tank (1). The input end of the injection pump (441) is connected to the inside of the collection chamber through the first conduit (442). The output end of the injection pump (441) is connected to the annular frame (444) through the second conduit (443). The annular frame (444) is installed on the outside of the mixing tank (41). The plug-in frame (423) is connected to the inside of the annular frame (444).

9. The fluidized solidified soil processing and casting device according to claim 8, characterized in that: The casting unit (45) includes a corrugated pipe (451), a conveying pipe (452), and a conveying auger (453). The lower end of the mixing box (41) is fixedly installed with a corrugated pipe (451). The corrugated pipe (451) has a conical structure. The lower end of the corrugated pipe (451) is installed with a conveying pipe (452). The lower end of the mixing frame (43) is fixedly installed with a conveying auger (453). The conveying auger (453) extends through the corrugated pipe (451) into the interior of the conveying pipe (452).

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