A mixing device for repairing saline-alkali soil based on fly ash and a repairing method thereof

Abstract

The application discloses a mixing device for repairing saline-alkali soil based on fly ash and a repairing method thereof, relates to the technical field of fly ash processing, and solves the technical problem that when light fly ash is mixed with heavy materials, the light fly ash and the heavy materials may be stratified, and the fly ash may be agglomerated due to static electricity during the mixing process. The mixing device comprises a mixing barrel, a multidirectional mixing mechanism for mixing fly ash is arranged in the mixing barrel, the multidirectional mixing mechanism comprises a mixing shaft vertically arranged in the mixing barrel, and the mixing barrel can realize circumferential rotation mixing and up-down direction mixing. The multidirectional mixing can make the fly ash mixing more uniform and sufficient, the light fly ash and the heavy materials are not prone to stratification, the fly ash material can be cut and scattered while being mixed in the up-down direction, the fly ash material is not prone to agglomeration and formation of a blank area, the mixing is sufficient, and better repairing effect is provided for subsequent saline-alkali soil repairing.

Description

Technical Field

[0001] This invention belongs to the field of fly ash processing technology, specifically a mixing device and method for remediating saline-alkali land based on fly ash. Background Technology

[0002] Fly ash is a fine-particle waste collected from coal-fired power plant boilers after coal combustion. It is characterized by its porous structure, weak alkalinity, and strong adsorption capacity. In recent years, fly ash has been used as a low-cost soil conditioner for the remediation of saline-alkali land, becoming a typical example of "treating waste with waste." Fly ash processing utilizes appropriate mixing equipment to combine it with other remediation materials, maximizing its remediation effectiveness and achieving systematic remediation of saline-alkali land.

[0003] When existing lightweight fly ash is mixed with heavy materials, stratification may occur, with an upper layer of fly ash and a lower layer of heavy materials. Furthermore, static electricity may cause clumping during mixing, affecting the uniformity of the fly ash mixture with other remediation materials and thus impacting the final remediation effect on saline-alkali land. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a mixing device and a method for remediating saline-alkali land based on fly ash.

[0005] A mixing device and method for remediating saline-alkali land based on fly ash, comprising: A mixing tank, wherein the mixing tank is equipped with a multi-directional mixing mechanism for mixing fly ash, the multi-directional mixing mechanism comprising: A mixing shaft is vertically installed inside the mixing tank, and the mixing shaft is connected to a mixing motor installed at the top of the mixing tank; Multiple mixing blades are circumferentially mounted on the surface of the mixing shaft, with the outer ends of the mixing blades extending to the inner wall of the mixing tank; A mixing and dispersing plate is provided between the two of the mixing blades; And an up-and-down driving component installed on the inner surface of the upper end of the mixing barrel to drive the mixing and dispersing plate to move up and down.

[0006] Preferably, the mixing and dispersing plate for mixing fly ash from top to bottom includes: A fixing mesh plate is fixed between two adjacent mixing blades, and multiple fixing mesh plates are provided along the height direction; A movable mesh plate is provided between two fixed mesh plates, and multiple movable mesh plates are provided along the height direction. And the disintegration rods installed on the upper and lower surfaces of the movable mesh plate.

[0007] Preferably, the up-and-down driving component that drives the movable mesh plate to move up and down includes: A fixing ring is fixed to the inner surface of the upper end of the mixing tank, and the surface of the fixing ring is provided with wavy sliding holes; A horizontal plate is fixedly sleeved on the upper end of the mixing shaft. A movable rod is provided between the mixing shaft and the fixed ring. The movable rod is L-shaped and its upper end extends to the inside of the fixed ring. A guide slider is installed on the upper end of the movable rod. The guide slider slides in conjunction with the wave-shaped sliding hole. The inner end of the movable mesh plate is fixedly sleeved on the mixing shaft.

[0008] Preferably, a fixed circular plate is sleeved on the movable rod, a reset member sleeved on the movable rod is provided between the fixed circular plate and the horizontal plate, and a mounting bracket is provided on the outer surface of the fixed ring.

[0009] Preferably, the lower end of the movable rod extends to the lower end of the cone-shaped mixing barrel, and the lower end surface of the movable rod is provided with an extension extending to the inner wall of the lower end of the cone-shaped mixing barrel, and the lower end of the movable rod is provided with an inclined material-pulling rod.

[0010] Preferably, the bottom of the mixing tank is provided with a discharge pipe, the tamping rod extends into the discharge pipe, and a pushing component is sleeved on the tamping rod, the pushing component comprising: An upper mounting ring is fixedly sleeved on the tamping rod. The upper mounting ring has multiple rotating inner rods on its circumferential surface, and a lower arc-shaped plate is provided at the lower end of the rotating inner rods. A pusher layer is fitted onto the outer surface of the upper mounting ring and the lower arc-shaped plate, and the pusher layer forms an inverted conical structure; An inner movable tube is threadedly fitted onto the tamping rod, and the inner movable tube is located below the upper mounting ring; The support diagonal rod is rotatably installed in the middle position of the rotating inner rod.

[0011] Preferably, a movable ring is rotatably sleeved on the inner movable tube, and the lower end of the supporting inclined rod is rotatably connected to the movable ring.

[0012] Preferably, the mixing tank has a feed inlet at the top, and the inner surface of the upper end of the mixing tank is provided with a vibration component that vibrates the area around the feed inlet. The vibration component includes: A striking plate extending to the inner surface of the upper end of the mixing tank, the striking plate being V-shaped, and a spherical striking block being provided at the outer end of the striking plate; A lifting cylinder is installed on top of the mixing tank. A piston rod is installed inside the lifting cylinder. The piston rod passes through the mixing tank and is rotatably connected to the inner end of the striking plate. A vertical plate is fixed to the inner surface of the upper end of the mixing tank. The surface of the striking plate is provided with rectangular sliding holes, and the vertical plate is provided with guide posts that are slidably connected to the rectangular sliding holes.

[0013] Preferably, a limiting plate is sleeved on the piston rod, and a corrugated pipe sleeved on the piston rod is provided between the upper surface of the limiting plate and the lower surface of the mixing barrel.

[0014] A method for remediating saline-alkali land based on fly ash: S1. Fly ash and other repair materials are fed into the mixing drum through the feed inlet. The mixing motor drives the mixing shaft, mixing blades and mixing and dispersing plates to rotate synchronously, and the materials are mixed in a circumferential rotation. S2. As the mixing shaft rotates, it drives the movable rod to rotate synchronously. The movable rod cooperates with the upper and lower driving components to drive the mixing and dispersing plate to move radially, mixing fly ash with other repair materials circumferentially and radially, so that it will not separate into layers. When feeding S3, fly ash materials and other repair materials, the vibrating components are used to strike and vibrate the area around the feed inlet, making it less likely to become blocked. S4. The mixed fly ash material is discharged and collected through the discharge pipe, and the collected fly ash material is transported to saline-alkali land for saline-alkali land remediation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention can achieve circumferential rotational mixing and vertical mixing. Multi-directional mixing can make the fly ash more uniform and sufficient, and it is not easy for light fly ash and heavy materials to separate into layers. At the same time as vertical mixing, the fly ash material can be cut and dispersed, so that the fly ash material is not easy to form blank areas and is fully mixed, providing a better restoration effect for subsequent saline-alkali land restoration.

[0016] (2) By providing a pushing component, the present invention can adapt to the space inside the feeding pipe and adjust the pushing area according to the space inside the feeding pipe. While not affecting the normal feeding of fly ash, it has the effect of pushing fly ash material downward, which facilitates rapid discharge and collection.

[0017] (3) By providing a vibration component, the present invention can knock and vibrate the barrel body around the feed inlet, causing the feed inlet to vibrate. The vibration force is transmitted to the feed inlet, making it difficult for the material to adhere to the inner wall of the feed inlet. This reduces material adhesion and prevents blockage, without affecting the mixing of the material. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the fly ash mixing device of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the fly ash mixing device of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the multi-directional hybrid mechanism; Figure 4 For the present invention Figure 3 Schematic diagram of the upper and lower drive components; Figure 5 For the present invention Figure 3 Exploded view of mixed and disassembled sheet metal parts; Figure 6 For the present invention Figure 2 Cross-sectional view of the pusher component; Figure 7 For the present invention Figure 3 A bottom view of the structure of the vibrating component; Figure 8 For the present invention Figure 7 Enlarged view of region A in the middle; In the diagram: 100, mixing tank; 101, mixing motor; 102, feed inlet; 103, discharge pipe; 104, discharge valve; 200, multi-directional mixing mechanism; 201, mixing shaft; 202, mixing blades; 203, inclined feeding rod; 204, tamping rod; 205, mixing and dispersing plate; 2051, fixed mesh plate; 2052, movable mesh plate; 2053, dispersing rod; 206, upper and lower driving components; 2061, fixing ring; 2062, corrugated sliding hole; 2063, mounting bracket; 2064, horizontal plate; 2065, movable rod; 2 066. Fixed circular plate; 2067. Reset component; 2068. Guide slider; 207. Reinforcing rod; 300. Vibration component; 301. Lifting cylinder; 302. Impact plate; 303. Spherical impact block; 304. Piston rod; 305. Limiting plate; 306. Bellows; 307. Vertical plate; 308. Rectangular sliding hole; 309. Guide column; 400. Pushing component; 401. Upper mounting ring; 402. Lower arc plate; 403. Rotating inner rod; 404. Moving ring; 405. Supporting diagonal rod; 406. Pushing layer; 407. Inner moving tube Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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. Example

[0020] Please see Figure 1 - Figure 5 This application provides a mixing device for remediating saline-alkali land based on fly ash, comprising: The mixing tank 100 contains a multi-directional mixing mechanism 200 for mixing fly ash. This multi-directional mixing mechanism enables circumferential rotational mixing and vertical mixing, resulting in more uniform and thorough mixing of the fly ash and preventing stratification between light and heavy materials. Furthermore, the vertical mixing action helps to cut and break up the fly ash material, preventing clumping and the formation of blank areas, thus ensuring thorough mixing and providing better remediation results for subsequent saline-alkali land restoration. The multi-directional mixing mechanism 200 includes: A mixing shaft 201 is vertically installed inside the mixing tank 100, and the mixing shaft 201 is connected to a mixing motor 101 installed on the top of the mixing tank 100; Multiple mixing blades 202 are circumferentially mounted on the surface of the mixing shaft 201. In this application, three sets of mixing blades 202 are shown. The mixing blades 202 are trapezoidal. The inclined surface of the trapezoidal blades generates thrust, which drives the material in the barrel to make circumferential motion, realizing the circumferential diffusion and mixing of the material, breaking the initial accumulation state of the material. A reinforcing rod 207 is provided between the inside of the mixing blades 202 and the mixing shaft 201 to facilitate the support of the mixing blades 202 and the stirring of the material. The outer end of the mixing blades 202 extends to the inner wall of the mixing barrel 100. While mixing the material, the mixing blades 202 can scrape the inner wall of the mixing barrel 100, improve the material utilization rate, and at the same time avoid the deterioration or mixing pollution caused by long-term material adhesion. A mixing and dispersing plate 205 is provided between the two mixing blades 202; And an up-and-down driving component 206 installed on the inner surface of the upper end of the mixing tank 100 to drive the mixing and dispersing plate 205 to move up and down.

[0021] In this embodiment, preferably, the mixing and dispersing plate 205 for mixing fly ash from both the upper and lower parts includes: Fixed mesh plate 2051 is fixed between two adjacent mixing blades 202. Multiple fixed mesh plates 2051 are arranged along the height direction. The fixed mesh plate 2051 rotates synchronously with the mixing shaft 201. On the one hand, it participates in circumferential mixing, and on the other hand, it provides a base for the movable mesh plate 2052. The material is dispersed by the staggered mesh holes to avoid large-scale stratification. A movable screen 2052 is provided between the upper and lower fixed screen plates 2051. Multiple movable screen plates 2052 are provided along the height direction. The vertical movement of the movable screen plates 2052 will break the vertical layering of the material. The mesh on the movable screen plate 2052 is intersected with the mesh on the fixed screen plate 2051, forming a shearing and dispersing effect to prevent the material from clumping together. And the dispersing rods 2053 installed on the upper and lower surfaces of the movable screen plate 2052. When the movable screen plate 2052 moves up and down, the dispersing rods 2053 are inserted into the material layer to pierce and separate the clumps of material.

[0022] In this embodiment, preferably, the vertical driving component 206 that drives the movable mesh plate 2052 to move up and down includes: A fixing ring 2061 is fixed on the inner surface of the upper end of the mixing tank 100. The surface of the fixing ring 2061 is provided with a wave-shaped sliding hole 2062. The height difference between the crest and trough of the wave-shaped sliding hole 2062 is set as needed, and the spacing between the fixed mesh plate 2051 and the movable mesh plate 2052 is matched with the height difference between the crest and trough. A horizontal plate 2064 is fixedly sleeved on the upper end of the mixing shaft 201. A movable rod 2065 is provided between the mixing shaft 201 and the fixed ring 2061. The mixing shaft 201 transmits rotational power to the movable rod 2065. The two rotate synchronously to ensure that the actions of each mixing component are coordinated. The movable rod 2065 is L-shaped and its upper end extends to the inner side of the fixed ring 2061. A guide slider 2068 is installed on the upper end of the movable rod 2065. The guide slider 2068 slides in conjunction with the wave-shaped sliding hole 2062. The sliding contact between the two can drive the movable rod 2065 to move up and down synchronously. The inner end of the movable mesh plate 2052 is fixedly sleeved on the mixing shaft 201.

[0023] In this embodiment, preferably, a fixed circular plate 2066 is sleeved on the movable rod 2065, and a reset member 2067 sleeved on the movable rod 2065 is provided between the fixed circular plate 2066 and the horizontal plate 2064. A mounting bracket 2063 is provided on the outer surface of the fixed ring 2061, so that the fixed ring 2061 forms a whole and will not slide against the guide slider 2068.

[0024] In this embodiment, preferably, the lower end of the movable rod 2065 extends to the lower end of the cone-shaped mixing tank 100, and the lower surface of the movable rod 2065 is provided with an extension extending to the inner wall of the lower end of the cone-shaped mixing tank 100. The lower end of the movable rod 2065 is provided with an inclined material-pushing rod 203, which pushes the material at the bottom of the tank to flip upward, thus preventing the material from accumulating at the bottom of the cone.

[0025] In summary, during use, fly ash and other remediation materials are fed into the mixing drum 100 through the feed inlet 102. The mixing motor 101 operates, driving the mixing shaft 201, mixing blades 202, and fixed mesh plate 2051 to rotate synchronously, mixing the materials in the mixing drum 100 circumferentially. Since the movable rod 2065 is connected to the mixing shaft 201 through the cross plate 2064, the movable rod 2065 rotates synchronously with the mixing shaft 201. The movable rod 2065 drives the H-shaped guide slider 206. 8. Sliding within the wavy sliding hole 2062, when the guide slider 2068 moves to the trough of the wavy sliding hole 2062, the movable rod 2065 moves downward to the trough along with the guide slider 2068, causing the fixed circular plate 2066 to move downward. The reset piece 2067 is in a stretched state, causing the movable mesh plate 2052 and the dispersing rod 2053 to move downward synchronously. The mesh size on the movable mesh plate 2052 and the fixed mesh plate 2051 can be set as needed, and the dispersing rod 2053 is in a state of tension. The mesh structure, with the dispersing rod 2053 contacting the upper surface of the fixed mesh plate 2051 as the movable rod 2065 moves downwards, creates an interlocking mesh that disperses the fly ash material between them, preventing large clumps. Simultaneously, the movable mesh plate 2052 moves downwards, pressing the upper layer of material downwards. When the guide slider 2068 reaches the crest of the wavy sliding hole 2062, the reset piece 2067 resets, and the movable rod 2065 and movable mesh plate 2052 move upwards. The dispersing rod 2053 on the upper surface of the movable mesh plate 2052 flips the lower layer of material upwards, bringing it into contact with the upper fixed mesh plate 2051, further dispersing the fly ash material between them and promoting upward mixing. As the mixing shaft 201 rotates, it drives the movable rod 2065 to rotate and move up and down, simultaneously mixing and dispersing the fly ash material, ensuring thorough mixing and providing better results for subsequent saline-alkali land remediation. Example

[0026] Reference Figure 6 This is the second embodiment of the present invention.

[0027] In this embodiment, preferably, a discharge pipe 103 is provided at the bottom of the mixing tank 100, and a tamping rod 204 extends into the discharge pipe 103. A pushing component 400 is sleeved on the tamping rod 204. By providing the pushing component 400, it can adapt to the space inside the discharge pipe 103, and the pushing area can be adjusted according to the space inside the discharge pipe 103. This has a downward auxiliary pushing effect on fly ash materials, facilitating rapid discharge and collection. The pushing component 400 includes: An upper mounting ring 401 is fixedly sleeved on the tamping rod 204. Multiple rotating inner rods 403 are provided on the circumferential surface of the upper mounting ring 401. A lower arc plate 402 is provided at the lower end of the rotating inner rod 403. Material channels are reserved in the pushing layer 406 and the lower arc plate 402, the inner wall of the conical end of the mixing barrel 100, and the inner wall of the feeding pipe 103. The material flow is not obstructed during the mixing process, ensuring that the mixing and feeding do not interfere with each other. The pusher layer 406 is fitted on the outer surface of the upper mounting ring 401 and the lower arc plate 402. The pusher layer 406 forms an inverted cone structure. The inverted cone structure is consistent with the material flow direction. When the pusher layer 406 moves up and down with the tamping rod 204, it forms a downward pushing force on the material at the bottom of the bucket. At the same time, the cone structure can guide the material to converge at the center of the downward material pipe 103. The inner moving tube 407 is threadedly fitted onto the tamping rod 204. The inner moving tube 407 is rotatably connected to the moving ring 404. The inner moving tube 407 is located below the upper mounting ring 401. Rotate the support diagonal rod 405 which is installed in the middle position of the rotating inner rod 403.

[0028] In this embodiment, preferably, a movable ring 404 is rotatably sleeved on the inner movable tube 407, and the lower end of the supporting inclined rod 405 is rotatably connected to the movable ring 404.

[0029] In summary, during use, first adjust the diameter of the circular structure formed by multiple lower arc plates 402 according to the inner wall diameter of the feeding pipe 103, thereby adjusting the diameter of the lower end of the pushing layer 406. Hold the inner moving pipe 407, which is threadedly engaged with the tamping rod 204. The inner moving pipe 407 rotates upward or downward, driving the moving ring 404 to move. The movement of the moving ring 404 changes the inclination angle of the supporting inclined rod 405, and the change in the inclination angle of the supporting inclined rod 405 will cause the rotation of the inner rod 403 to change the angle with the vertical direction. When the diameter of the circular structure formed by the lower arc plates 402 is appropriate, the pushing layer 406, together with the lower arc plates 402 and the rotating inner rod 403, forms a conical structure with a larger lower diameter and a smaller upper diameter. The pushing layer 406 can be a cloth layer with extensibility. Since the tamping rod 204 is connected to the movable rod 2065, the two can move upward synchronously, driving the pushing layer 406 and the lower arc plates 402 to move upward, located in the feeding pipe. Above 103, and with space between the pusher layer 406 and the inner wall of the conical end of the mixing tank 100 for material to pass through, and also with space between the pusher layer 406 and the inner wall of the discharge pipe 103, the mixing shaft 201 will rotate synchronously during discharge, facilitating scraping of the material on the inner wall of the mixing tank 100 and allowing more material to be discharged. The discharge valve 104 installed on the discharge pipe 103 is open, and the discharge valve 104 is located above the pusher component 400. When the pusher layer 406 is located at the material inlet of the discharge pipe 103... When the material passes through the space between the pusher layer 406 and the inner wall of the conical end of the mixing tank 100, it enters the discharge pipe 103. As the pusher layer 406 moves downward with the tamping rod 204, the conical pusher layer 406 pushes the material below it downward, allowing the material to quickly enter and exit the discharge pipe 103. The tamping rod 204 moves up and down with the movable rod 2065, which also has the effect of clearing and dispersing the material in the discharge pipe 103, making it easier for the material to be discharged. Example

[0030] Reference Figure 7 and Figure 8 This is the third embodiment of the present invention.

[0031] In this embodiment, preferably, the mixing tank 100 is provided with a feed inlet 102 at the top, which adopts a wide-diameter design to facilitate the rapid addition of fly ash and remediation materials (such as amendments, organic fertilizers, etc.). A vibration component 300 is provided on the inner surface of the upper end of the mixing tank 100 to vibrate the area around the feed inlet 102. By providing the vibration component 300, the tank body around the feed inlet 102 can be vibrated, causing vibration around the feed inlet 102. The vibration force is transmitted to the feed inlet 102, making it less likely for materials to adhere to the inner wall of the feed inlet 102, reducing material adhesion and preventing blockage, without affecting the mixing of materials. The entire vibration component 300 does not obstruct the feed inlet 102. The vibration component 300 includes: The striking plate 302 extends to the inner surface of the upper end of the mixing tank 100. The striking plate 302 is V-shaped. A spherical striking block 303 is provided at the outer end of the striking plate 302. The vibration force is transmitted by striking the tank body, rather than directly contacting the feed inlet 102, so as to avoid interfering with the feeding and ensure that the vibration force covers the periphery of the feed inlet 102. A lifting cylinder 301 is installed on the top of the mixing tank 100. A piston rod 304 is provided inside the lifting cylinder 301. The piston rod 304 passes through the mixing tank 100 and is rotatably connected to the inner end of the striking plate 302. The vertical plate 307 is fixed on the inner surface of the upper end of the mixing tank 100. The surface of the striking plate 302 is provided with a rectangular sliding hole 308. The vertical plate 307 is provided with a guide post 309 that is slidably connected to the rectangular sliding hole 308. The rectangular sliding hole 308 and the guide post 309 cooperate to guide and position, ensuring that the striking plate 302 rotates accurately and will not conflict with the rise and fall of the piston rod 304.

[0032] In this embodiment, preferably, a limiting plate 305 is sleeved on the piston rod 304, and a corrugated pipe 306 is sleeved on the piston rod 304 between the upper surface of the limiting plate 305 and the lower surface of the mixing tank 100. The corrugated pipe 306 seals the connection between the piston rod 304 and the tank body to prevent materials from entering the interior and causing damage.

[0033] In summary, during use, the lifting cylinder 301 operates, the piston rod 304 extends, driving one end of the rotatably connected striking plate 302 to move downward, while the end with the spherical striking block 303 moves upward. In order to adapt to the rotation of the striking plate 302, while one end of the striking plate 302 moves downward, the entire plate body will drive the rectangular sliding hole 308 to move around the guide post 309. The spherical striking block 303 strikes the barrel body next to the feed inlet 102, transmitting the vibration force generated by the strike to the inner wall of the feed inlet 102, making it difficult for materials to adhere to the inner wall of the feed inlet 102, reducing material adhesion, reducing the blockage of the feed inlet 102, and realizing continuous material feeding and mixing.

[0034] A method for remediating saline-alkali land based on fly ash: S1. Fly ash and other repair materials are fed into the mixing drum 100 through the feed inlet 102. The mixing motor 101 drives the mixing shaft 201, mixing blades 202 and mixing and dispersing plates 205 to rotate synchronously and mix the materials in a circumferential rotation. S2. As the mixing shaft 201 rotates, it drives the movable rod 2065 to rotate synchronously. The movable rod 2065 cooperates with the upper and lower driving components 206 to drive the mixing and dispersing plate 205 to move radially, mixing fly ash with other repair materials in the circumferential and radial directions to prevent stratification. When feeding S3, fly ash materials and other repair materials, the vibrating component 300 strikes and vibrates the area around the feed inlet 102, making it less likely for the feed inlet 102 to become blocked. S4. The mixed fly ash material is discharged and collected through the discharge pipe 103. The collected fly ash material is transported to the saline-alkali land and used for saline-alkali land remediation.

[0035] The working principle of this invention is as follows: During use, fly ash and other repair materials are fed into the mixing drum 100 through the feed inlet 102. During the feeding process, the piston rod 304 inside the lifting cylinder 301 extends and retracts, causing the striking plate 302 to rotate around the guide column 309. The spherical striking block 303 strikes the drum body next to the feed inlet 102, transmitting the vibration force generated by the striking to the inner wall of the feed inlet 102, making it difficult for materials to adhere to the inner wall of the feed inlet 102. The mixing motor 101 drives the mixing shaft 201, mixing blades 202, and movable rod 2065 to rotate synchronously, mixing the materials in a circumferential rotation. The movable rod 2065 drives the H-shaped guide slider 2068 to slide in the corrugated sliding hole 2062. The guide slider 2068 drives the movable rod 2065 to move up and down along the corrugated sliding hole 2062, which in turn drives the movable screen plate 2052 and the dispersing rod 2053 on it to move up and down. The movable screen plate 2052 mixes the material from top to bottom, making it less likely for the material to separate into layers. At the same time, the dispersing rod 2053 works with the fixed screen plate 2051 to cut and disperse the material between the two, making it less likely for the material to clump together. The mixed material is discharged through the feed pipe 103, and the up-and-down moving tamping rod 204 disperses the material, making it easy to discharge quickly.

[0036] The above embodiments are merely illustrative of the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A mixing device for remediating saline-alkali land based on fly ash, characterized in that, include: A mixing tank (100) is provided with a multi-directional mixing mechanism (200) for mixing fly ash inside the mixing tank (100), the multi-directional mixing mechanism (200) comprising: A mixing shaft (201) is vertically installed inside the mixing tank (100), and the mixing shaft (201) is connected to a mixing motor (101) installed on the top of the mixing tank (100); Multiple mixing blades (202) are circumferentially mounted on the surface of the mixing shaft (201), with the outer ends of the mixing blades (202) extending to the inner wall of the mixing barrel (100); A mixing and dispersing plate (205) is provided between the two of the mixing blades (202); And an up-and-down driving component (206) installed on the inner surface of the upper end of the mixing barrel (100) to drive the mixing and dispersing plate (205) to move up and down.

2. The mixing device for remediating saline-alkali land based on fly ash according to claim 1, characterized in that, The mixing and dispersing plate (205) for mixing fly ash from top to bottom includes: A fixing mesh plate (2051) is fixed between two adjacent mixing blades (202), and multiple fixing mesh plates (2051) are provided along the height direction; A movable mesh plate (2052) is provided between the upper and lower fixed mesh plates (2051), and multiple movable mesh plates (2052) are provided along the height direction; And the disintegration rods (2053) installed on the upper and lower surfaces of the movable mesh plate (2052).

3. The mixing device for remediating saline-alkali land based on fly ash according to claim 2, characterized in that, The vertical driving component (206) that drives the movable mesh plate (2052) to move up and down includes: A fixing ring (2061) is fixed on the inner surface of the upper end of the mixing tank (100), and the surface of the fixing ring (2061) is provided with a wave-shaped sliding hole (2062). A horizontal plate (2064) is fixedly sleeved on the upper end of the mixing shaft (201). A movable rod (2065) is provided between the mixing shaft (201) and the fixed ring (2061). The movable rod (2065) is L-shaped and its upper end extends to the inside of the fixed ring (2061). A guide slider (2068) is installed on the upper end of the movable rod (2065). The guide slider (2068) slides in conjunction with the wave-shaped sliding hole (2062). The inner end of the movable mesh plate (2052) is fixedly sleeved on the mixing shaft (201).

4. The mixing device for remediating saline-alkali land based on fly ash according to claim 3, characterized in that, A fixed circular plate (2066) is sleeved on the movable rod (2065), and a reset piece (2067) sleeved on the movable rod (2065) is provided between the fixed circular plate (2066) and the horizontal plate (2064). A mounting bracket (2063) is provided on the outer surface of the fixed ring (2061).

5. A mixing device for remediating saline-alkali land based on fly ash according to claim 3, characterized in that, The lower end of the movable rod (2065) extends to the conical lower end of the mixing barrel (100), and the lower surface of the movable rod (2065) is provided with an inner wall extending to the conical lower end of the mixing barrel (100). The lower end of the movable rod (2065) is provided with an inclined material-pulling rod (203).

6. The mixing device for remediating saline-alkali land based on fly ash according to claim 5, characterized in that, The mixing tank (100) is provided with a discharge pipe (103) at the bottom, and the tamping rod (204) extends into the discharge pipe (103). A pushing component (400) is sleeved on the tamping rod (204), and the pushing component (400) includes: An upper mounting ring (401) is fixedly sleeved on the tamping rod (204). The upper mounting ring (401) has a plurality of rotating inner rods (403) on its circumferential surface. The lower end of the rotating inner rod (403) is provided with a lower arc plate (402). A pusher layer (406) is fitted onto the outer surfaces of the upper mounting ring (401) and the lower arc plate (402), the pusher layer (406) forming an inverted conical structure; An inner movable tube (407) is threadedly fitted onto the tamping rod (204), and the inner movable tube (407) is located below the upper mounting ring (401); Rotary support diagonal bar (405) is installed in the middle position of the rotating inner rod (403).

7. A mixing device for remediating saline-alkali land based on fly ash according to claim 6, characterized in that, A movable ring (404) is rotatably sleeved on the inner movable tube (407), and the lower end of the supporting inclined rod (405) is rotatably connected to the movable ring (404).

8. A mixing device for remediating saline-alkali land based on fly ash according to claim 6, characterized in that, The mixing tank (100) is provided with a feed inlet (102) at the top, and a vibration component (300) for vibrating the periphery of the feed inlet (102) is provided on the inner surface of the upper end of the mixing tank (100). The vibration component (300) includes: A striking plate (302) extends to the inner surface of the upper end of the mixing tank (100), the striking plate (302) is V-shaped, and a spherical striking block (303) is provided at the outer end of the striking plate (302). A lifting cylinder (301) is installed on the top of the mixing tank (100). A piston rod (304) is provided inside the lifting cylinder (301). The piston rod (304) passes through the mixing tank (100) and is rotatably connected to the inner end of the striking plate (302). A vertical plate (307) is fixed on the inner surface of the upper end of the mixing tank (100). A rectangular sliding hole (308) is provided on the surface of the striking plate (302). The vertical plate (307) is provided with a guide post (309) that is slidably connected to the rectangular sliding hole (308).

9. A mixing device for remediating saline-alkali land based on fly ash according to claim 8, characterized in that, A limiting plate (305) is sleeved on the piston rod (304), and a corrugated pipe (306) sleeved on the piston rod (304) is provided between the upper surface of the limiting plate (305) and the lower surface of the mixing barrel (100).

10. A method for remediating saline-alkali land based on fly ash, employing the mixing device for remediating saline-alkali land based on fly ash as described in claim 9, characterized in that: S1. Fly ash and other repair materials are fed into the mixing drum (100) through the feed inlet (102). The mixing shaft (201), mixing blades (202) and mixing and dispersing plates (205) are driven to rotate synchronously by the mixing motor (101) to mix the materials in a circumferential rotation. S2. As the mixing shaft (201) rotates, it drives the movable rod (2065) to rotate synchronously. The movable rod (2065) cooperates with the upper and lower driving components (206) to drive the mixing and dispersing plate (205) to move radially, so as to mix the fly ash with other repair materials in the circumferential and radial directions, so that it will not separate into layers. When feeding S3, fly ash materials and other repair materials, the vibrating component (300) is used to strike and vibrate the area around the feed inlet (102), so that the feed inlet (102) is less likely to be blocked. S4. The mixed fly ash material is discharged and collected through the discharge pipe (103), and the collected fly ash material is transported to the saline-alkali land for saline-alkali land remediation.

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