Soil-salt separation device for saline-alkali soil

Abstract

The utility model relates to a saline-alkali soil salt separation device which comprises a walking frame body, a control module, and an identification module, a crushing module, a conveying module, a winnowing separation module and a backfilling module which are sequentially arranged on the walking frame body, the identification module is electrically connected with the control module, and the identification module comprises a sensor array arranged at the front end of the walking frame body; the sensor array consists of a plurality of near-infrared sensors and color sensors; the crushing module comprises a first crushing roller which is rotationally arranged on the walking frame body and can be adjusted in a lifting manner, and the first crushing roller is used for rolling and crushing the detected salt crust; the rear end of the conveying module is communicated with the winnowing separation module, so that the crushed saline soil is conveyed to the winnowing separation module for soil-salt separation; and the backfilling module is arranged below the winnowing separation module and is used for backfilling the soil separated by the winnowing separation module. According to the technical scheme, the soil-salt separation device for the saline-alkali soil can effectively break salt shells, realizes soil-salt separation and improves the soil quality.

Description

Technical Field

[0001] The present disclosure relates to the technical field of saline-alkali land management, and in particular to a saline-alkali land soil-salt separation device. Background Art

[0002] Currently, traditional methods for improving saline-alkali land include flood irrigation and the application of chemical amendments. While flood irrigation can dilute soil salinity, it consumes large amounts of water resources and can easily cause groundwater levels to rise, potentially leading to secondary salinization. While chemical amendments can regulate soil pH to a certain extent, long-term use can damage soil structure, cause environmental pollution, and increase heavy metal levels in the soil, potentially affecting the safety of agricultural products.

[0003] The salt crust on the surface of saline-alkali land is even more problematic. The hard, dense layer formed by the salt crust strongly blocks rainwater infiltration and soil gas exchange, leading to soil compaction and deterioration of permeability. Traditional land reclamation methods are unable to effectively overcome this obstacle. Furthermore, the salt crust, acting as a highly reflective barrier, exacerbates surface water evaporation, causing the underlying soil to become drier and further complicating water management. Furthermore, the high concentrations of soluble salts accumulated in the salt crust directly poison plant roots, inhibiting seed germination and seedling growth, and accelerating the accumulation of salt in the surface layer, ultimately leading to a collapse in land productivity and ecological degradation. Traditional land reclamation methods are unlikely to fundamentally address the damage caused by salt crust to saline-alkali land ecosystems. Utility Model Content

[0004] The purpose of the present disclosure is to provide a saline-alkali land soil-salt separation device, which can effectively break the salt crust, realize soil-salt separation, and improve soil quality.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a saline-alkali soil salt separation device, comprising a traveling frame, a control module, and an identification module, a crushing module, a conveying module, an air separation module and a backfilling module arranged on the traveling frame from front to back, wherein the identification module is electrically connected to the control module and is used to detect salt crusts, the identification module comprises a sensor array arranged at the front end of the traveling frame, the sensor array consists of a plurality of near-infrared sensors and a color sensor; the crushing module comprises a first crushing roller rotatably arranged on the traveling frame and capable of being raised and lowered and adjusted, the first crushing roller being used to crush the detected salt crust to form salt soil; the rear end of the conveying module is connected to the air separation module to convey the crushed salt soil to the air separation module for soil-salt separation; the backfilling module is arranged below the air separation module and is used to backfill the soil separated by the air separation module.

[0006] Optionally, a movable plate is slidably provided below the traveling frame, and a lifting drive member for driving the movable plate to move up and down is further provided on the traveling frame, and the first crushing roller is rotatably connected to the bottom of the movable plate through a mounting frame.

[0007] Optionally, the first crushing roller includes a first roller body and a rotating drive member that drives the first roller body to rotate, the rotating drive member is installed on the mounting frame, the first roller body is rotatably connected to the mounting frame, and a plurality of metal serrations are spaced apart on the outer circumference of the first roller body.

[0008] Optionally, a second crushing roller is rotatably arranged on the movable plate, the second crushing roller is parallel to the first crushing roller, and the second crushing roller is connected to the first crushing roller via an annular transmission mechanism, the annular transmission mechanism is constructed so that the second crushing roller and the first crushing roller rotate synchronously and in the same direction, wherein the second crushing roller includes a second roller body, the second roller body is rotatably arranged on the movable plate, and a plurality of rubber protrusions are spaced apart on the outer periphery of the second roller body.

[0009] Optionally, the conveying module includes a chain bucket lifting mechanism, the air separation module includes a box body arranged above the traveling frame, the chain bucket lifting mechanism is passed through the traveling frame, and the front end of the chain bucket lifting mechanism extends to the bottom of the traveling frame, and the rear end of the chain bucket lifting mechanism extends into the box body.

[0010] Optionally, the air separation module also includes a guide plate and multiple fans. A feed port is provided on the side panel of the box body close to the conveying module. The chain bucket lifting mechanism is arranged in the feed port. A first drop port is provided on the bottom plate of the box body. The guide plate is obliquely arranged inside the box body, and the high end is connected to the feed port, and the low end extends to the first drop port. A accommodating space is reserved on the side of the first drop port away from the feed port, and a second drop port corresponding to the accommodating space is provided on the bottom plate of the box body; the multiple fans are arranged at intervals on the top plate of the box body and close to the feed port, and the angle of the fan relative to the guide plate is adjustable.

[0011] Optionally, the backfill module includes a spiral conveying mechanism, the front end of the spiral conveying mechanism is opposite to the first blanking port, the rear end of the spiral conveying mechanism extends to the rear end of the walking frame, and the rear end of the spiral conveying mechanism is provided with a guide plate extending obliquely toward the ground.

[0012] Optionally, the saline-alkali soil salt separation device also includes a centrifugal separation module, which is arranged on the walking frame and located below the box body. The centrifugal separation module is connected to the second drop port and is used to perform secondary separation on the separated salt particles.

[0013] Optionally, the saline-alkali soil-salt separation device also includes a transfer shovel, which is arranged under the walking frame and between the crushing module and the conveying module. The transfer shovel is arranged at an angle, and the front end is lower than the rear end, and the front end of the transfer shovel is provided with a plurality of shovel teeth that can fit with the ground, and the rear end of the transfer shovel extends to the top of the conveying module.

[0014] Optionally, a fixing plate is provided under the walking frame, and the fixing plate is provided with at least a first mounting hole and a second mounting hole at intervals in the height direction. The rear end of the transfer shovel is rotatably connected to the walking frame, and a strip hole is provided in the middle of the transfer shovel. The fastener passes through the strip hole and is selectively threadedly connected to the first mounting hole or the second mounting hole.

[0015] Through the above technical solution, in the saline-alkali soil salt separation device provided by the present invention, the identification, crushing, conveying, separation and backfilling modules are integrated into the walking frame, wherein the identification module adopts an array composed of a near-infrared sensor and a color sensor. The near-infrared sensor can detect the salt content in the soil, and the color sensor can assist in judging the degree of soil salinization by detecting the soil color. Through the combination of the two, the salt soil distribution can be identified more accurately; the salt crust is crushed by the crushing module, and since the crushing module can be raised and lowered, the working height can be automatically adjusted according to the hardness of the salt crust; the crushed salt soil is efficiently conveyed to the air separation module through the conveying module, and the air separation module is used to separate the salt and soil to ensure the continuity of the entire processing process; the soil separated by the air separation module is backfilled into the land through the backfilling module, thereby effectively reducing the soil salinity and improving the soil structure. Compared with traditional improvement methods, it avoids soil heavy metal pollution and structural damage, and is more environmentally friendly and reliable to use.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic structural diagram of a saline-alkali soil-salt separation device according to an embodiment of the present disclosure;

[0019] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0021] Figure 4 It is a schematic structural diagram of the transfer shovel of the saline-alkali soil salt separation device according to an embodiment of the present disclosure.

[0022] Explanation of the accompanying drawings: 1. Walking frame; 2. Identification module; 21. Near-infrared sensor; 22. Color sensor; 3. Crushing module; 31. First crushing roller; 311. Metal serrations; 32. Moving plate; 33. Lifting drive member; 34. Mounting frame; 35. Rotating drive member; 36. Second crushing roller; 361. Rubber boss; 37. Ring transmission mechanism; 4. Conveying module; 5. Air separation module; 51. Box body; 511. Feed port; 512. First drop port; 513. Second drop port; 52. Guide plate; 53. Fan; 54. Accommodating space; 6. Backfilling module; 61. Screw conveying mechanism; 62. Guide plate; 7. Centrifugal separation module; 8. Transfer shovel; 81. Shovel teeth; 82. Strip hole; 9. Fixing plate; 91. First mounting hole; 92. Second mounting hole; 93. Fastener. DETAILED DESCRIPTION

[0023] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0024] In this disclosure, unless otherwise stated, directional words such as "upper, lower, front, and back" are used with reference to the attached drawings. Figure 1 The terms "upper, lower, front, and back" are used in this disclosure to distinguish one element from another and do not indicate order or importance. In the following description, when referring to the drawings, unless otherwise indicated, the same reference numerals in different drawings represent the same or similar elements. The above definitions are intended only to explain and illustrate this disclosure and should not be construed as limiting this disclosure.

[0025] According to an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 2As shown, a saline-alkali soil salt separation device is provided, including a traveling frame 1, a control module, and an identification module 2, a crushing module 3, a conveying module 4, an air separation module 5 and a backfill module 6 arranged on the traveling frame 1 from front to back. The identification module 2 is electrically connected to the control module and is used to detect salt crusts. The identification module 2 includes a sensor array arranged at the front end of the traveling frame 1, and the sensor array consists of a plurality of near-infrared sensors 21 and a color sensor 22; the crushing module 3 includes a first crushing roller 31 rotatably arranged on the traveling frame 1 and capable of being raised and lowered and adjusted, and the first crushing roller 31 is used to crush the detected salt crust to form salt soil; the rear end of the conveying module 4 is connected to the air separation module 5 to convey the crushed salt soil to the air separation module 5 for soil-salt separation; the backfill module 6 is arranged below the air separation module 5 and is used to backfill the soil separated by the air separation module 5.

[0026] Through the above technical solution, in the saline-alkali soil salt separation device provided by the present invention, the identification, crushing, conveying, separation and backfilling modules 6 are integrated into the walking frame 1, wherein the identification module 2 adopts an array composed of a near-infrared sensor 21 and a color sensor 22. The near-infrared sensor 21 can detect the salt content in the soil, and the color sensor 22 can assist in judging the degree of salinization of the soil by detecting the color of the soil. Through the combination of the two, the distribution of salt soil can be more accurately identified; the salt crust is crushed by the crushing module 3. Since the crushing module 3 can be raised and lowered, the working height can be automatically adjusted according to the hardness of the salt crust; the crushed salt soil is efficiently conveyed to the air separation module 5 by the conveying module 4, and the air separation module 5 is used to separate the salt soil to ensure the continuity of the entire processing process; the soil separated by the air separation module 5 is backfilled into the land through the backfilling module 6, thereby effectively reducing the soil salinity and improving the soil structure. Compared with traditional improvement methods, it avoids soil heavy metal pollution and structural damage, and is more environmentally friendly and reliable to use.

[0027] In this disclosure, reference is made to Figure 1 As shown in the figure, the traveling frame 1 includes a frame body and universal wheels arranged on the frame body, so that the traveling frame 1 can be moved to any position, thereby improving the working efficiency of the saline-alkali land soil-salt separation device.

[0028] According to an exemplary embodiment of the present disclosure, referring to Figure 2 As shown, a movable plate 32 is slidably mounted below the traveling frame 1. A lifting drive 33 is also provided on the traveling frame 1 to drive the movable plate 32 up and down. The first crushing roller 31 is rotatably connected to the bottom of the movable plate 32 via a mounting bracket 34. By using the lifting drive 33 to drive the movable plate 32 up and down, the first crushing roller 31 can be raised and lowered to accommodate salt crusts of varying hardness and thickness.

[0029] According to an exemplary embodiment of the present disclosure, referring to Figure 2 As shown, the first crushing roller 31 includes a first roller body and a rotational drive member 35 for driving the first roller body. The rotational drive member 35 is mounted on a mounting frame 34, to which the first roller body is rotatably connected. A plurality of metal serrations 311 are spaced apart on the outer circumference of the first roller body. The rotational drive member 35 can be a motor. When the motor rotates, it drives the first roller body to rotate and causes the metal serrations 311 to rotate about the axis of the first roller body. The metal serrations 311 effectively crush the hard salt crust, improving crushing efficiency.

[0030] According to an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 2 As shown in FIG, a second crushing roller 36 is rotatably mounted on the movable plate 32. The second crushing roller 36 is parallel to the first crushing roller 31 and is connected to the first crushing roller 31 via an annular transmission mechanism 37. The annular transmission mechanism 37 is configured to rotate synchronously and in the same direction as the first crushing roller 31. The second crushing roller 36 includes a second roller body rotatably mounted on the movable plate 32. A plurality of rubber protrusions 361 are spaced apart on the outer circumference of the second roller body. In this technical solution, the second crushing roller 36 rotates synchronously with the first crushing roller 31. The rubber protrusions 361 further refine and loosen the crushed soil, improving its uniformity while preventing dense soil clumps from becoming fine dust due to over-crushing. In other words, through the cooperation of the first crushing roller 31 and the second crushing roller 36, the salt crust is transformed into salt soil with the desired particle size and looseness for subsequent separation processing.

[0031] In the present disclosure, the annular transmission mechanism 37 may be a chain transmission mechanism or a belt transmission mechanism, and the present disclosure does not impose any specific restrictions thereto. In this way, the annular transmission mechanism 37 may drive the first crushing roller 31 and the second crushing roller 36 to rotate synchronously and in the same direction.

[0032] According to an exemplary embodiment of the present disclosure, referring to Figure 1 As shown, the conveying module 4 includes a chain bucket lifting mechanism, which can transport salt soil from a low place to a high place. The air separation module 5 includes a box body 51 provided above the traveling frame 1. The chain bucket lifting mechanism is passed through the traveling frame 1, and the front end of the chain bucket lifting mechanism extends to the bottom of the traveling frame 1, and the rear end of the chain bucket lifting mechanism extends into the box body 51. Through the above arrangement, the chain bucket lifting mechanism can stably transport the crushed salt soil to the box body 51 for separation and processing.

[0033] According to an exemplary embodiment of the present disclosure, referring to Figure 1As shown, the air separation module 5 also includes a guide plate 52 and a plurality of fans 53. A feed port 511 is provided on the side panel of the box body 51 near the conveying module 4. The chain bucket lifting mechanism is arranged in the feed port 511. A first drop port 512 is provided on the bottom plate of the box body 51. The guide plate 52 is tiltedly arranged inside the box body 51, and the high end is connected to the feed port 511, and the low end extends to the first drop port 512. A accommodating space 54 is reserved on the side of the first drop port 512 away from the feed port 511, and a second drop port 513 corresponding to the accommodating space 54 is provided on the bottom plate of the box body 51; a plurality of fans 53 are arranged at intervals on the top plate of the box body 51 and arranged close to the feed port 511. The angle of the fan 53 relative to the guide plate 52 is adjustable.

[0034] In this disclosure, reference is made to Figure 1 As shown, the air separation module 5 uses the wind power of the fan 53 to separate the soil and salt. Specifically, the strong wind blown by the fan 53 forms a high-speed airflow within the box 51. When the crushed salt soil enters the box 51, due to the different density, shape, and aerodynamic properties of the salt particles and soil particles, the airflow blows the lighter salt particles toward the far end (i.e., the rear end) of the box 51. In other words, the salt particles are blown into the storage space 54 and eventually fall into the second dropout 513. The heavier soil particles, under the combined action of gravity and airflow, move along the inclined guide plate 52 toward the first dropout 512. The fan 53 is adjustable in angle, so the wind direction can be adjusted according to the characteristics of the soil and salt, thereby improving the separation effect.

[0035] According to an exemplary embodiment of the present disclosure, referring to Figure 1 As shown, the backfill module 6 includes a spiral conveying mechanism 61. The front end of the spiral conveying mechanism 61 is opposite the first drop opening 512, and the rear end of the spiral conveying mechanism 61 extends to the rear end of the traveling frame 1. The rear end of the spiral conveying mechanism 61 is provided with a guide plate 62 that extends obliquely toward the ground. The front end of the spiral conveying mechanism 61 receives soil falling from the first drop opening 512 and conveys the separated soil to the rear end. The soil is evenly backfilled into the ground through the guide plate 62.

[0036] According to an exemplary embodiment of the present disclosure, referring to Figure 1 As shown, the saline-alkali soil salt separation device further includes a centrifugal separation module 7, which is disposed on the traveling frame 1 and located below the housing 51. The centrifugal separation module 7 is connected to the second discharge port 513 and is used to perform secondary separation on the separated salt particles. The centrifugal separation module 7 can utilize an existing centrifugal device to perform secondary separation on the salt particles using the centrifugal force of the centrifugal device, thereby improving the separation purity of the salt.

[0037] According to an exemplary embodiment of the present disclosure, referring to Figure 1 、 Figure 3 and Figure 4 As shown, the saline-alkali soil and salt separation device further includes a transfer shovel 8, which is disposed below the traveling frame 1 and between the crushing module 3 and the conveying module 4. The transfer shovel 8 is arranged at an angle, with the front end lower than the rear end. The front end of the transfer shovel 8 is provided with a plurality of shovel teeth 81 that can contact the ground, and the rear end of the transfer shovel 8 extends above the conveying module 4. The transfer shovel 8 can collect the crushed salt soil and convey it to the conveying module 4, thereby improving the conveying efficiency of the salt soil and thus improving the overall processing efficiency of the saline-alkali soil and salt separation device.

[0038] According to an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 3 As shown, a fixing plate 9 is provided below the traveling frame 1. The fixing plate 9 is provided with at least a first mounting hole 91 and a second mounting hole 92 spaced apart in the height direction. The rear end of the transfer shovel 8 is rotatably connected to the traveling frame 1. A strip hole 82 is provided in the middle of the transfer shovel 8. A fastener 93 passes through the strip hole 82 and is selectively threaded into the first mounting hole 91 or the second mounting hole 92. By adjusting the fastener 93 to connect with different mounting holes, the inclination angle of the transfer shovel 8 can be changed. For example, when salt soil needs to be collected, the fastener 93 is threaded into the first mounting hole 91; when idle, the fastener 93 can be threaded into the second mounting hole 92, making it easy to store and flexible.

[0039] Reference Figures 1 to 4 As shown, the working process of the saline-alkali soil salt separation device disclosed in the present invention is detailed as follows:

[0040] When the traveling frame 1 moves on saline-alkali land, the identification module 2 at the front end starts working. The sensor array composed of multiple near-infrared sensors 21 and color sensors 22 continuously scans the ground soil. The near-infrared sensor 21 analyzes the salt content by detecting the soil spectrum; the color sensor 22 assists in judging the degree of salinization and the distribution of salt crust based on the difference in soil color. The identification module 2 transmits the detection data to the control module in real time. The control module analyzes and processes the data to determine the location and characteristics of the saline soil, providing a basis for subsequent operations.

[0041] Then, based on the information fed back by the identification module 2, the control module controls the lifting drive 33 (which can be configured as a cylinder) to adjust the height of the movable plate 32, thereby adjusting the height positions of the first crushing roller 31 and the second crushing roller 36 to adapt to the thickness of the salt crust and the hardness of the soil. Subsequently, the rotation drive 35 drives the first crushing roller 31 to rotate, and the metal serrations 311 on its outer surface crush the salt soil. Simultaneously, the first crushing roller 31 drives the second crushing roller 36 to rotate synchronously via the annular transmission mechanism 37. The rubber protrusions 361 on the outer periphery of the second crushing roller 36 further refine and loosen the crushed soil.

[0042] Then, as the crushing continues, the crushed salt soil accumulates on the ground, and the inclined transfer shovel 8 uses the shovel teeth 81 to collect the salt soil and transport it to the conveying module 4. At the same time, the chain bucket lifting mechanism of the conveying module 4 is in operation. The front end of the conveying module 4 is located under the traveling frame 1 to receive the salt soil, and the rear end extends to the box 51 of the air separation module 5, stably transporting the crushed salt soil to the box 51 for separation processing;

[0043] Next, the salt soil enters the box 51 from the feed port 511 via the chain bucket elevator mechanism and falls onto the inclined guide plate 52. At this point, multiple fans 53 located on the top plate of the box 51 are activated, adjusting their angle and wind speed according to the instructions of the control module. Under the action of the wind, the lighter salt particles are blown into the storage space 54 and discharged from the corresponding second drop port 513; while the heavier soil slides down the guide plate 52 and falls from the first drop port 512.

[0044] Finally, the salt particles discharged from the second discharge port 513 enter the centrifugal separation module 7, and are subjected to secondary separation using centrifugal force to further improve the salt purity. The soil entering the first discharge port 512 reaches the backfill module 6, and the spiral conveying mechanism 61 transports the soil to the rear end of the walking frame 1, and evenly backfills the soil into the land through the guide plate 62, completing the improvement of the saline-alkali land.

[0045] In summary, during the entire working process, each module worked closely together under the coordination of the control module, realizing the integrated operation from salt soil identification, crushing, transportation, separation to soil backfilling, and efficiently completing saline-alkali soil salt separation and soil improvement.

[0046] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0048] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A saline-alkali soil-salt separation device, characterized in that: It comprises a traveling frame (1), a control module, and an identification module (2), a crushing module (3), a conveying module (4), an air separation module (5), and a backfilling module (6) which are sequentially arranged on the traveling frame (1) from front to back. The identification module (2) is electrically connected to the control module and is used to detect salt crusts. The identification module (2) includes a sensor array arranged at the front end of the traveling frame (1), and the sensor array is composed of a plurality of near-infrared sensors (21) and a color sensor (22); The crushing module (3) comprises a first crushing roller (31) rotatably mounted on the traveling frame (1) and capable of being raised and lowered, wherein the first crushing roller (31) is used to crush the detected salt crust to form salt soil; The rear end of the conveying module (4) is in communication with the air separation module (5) so as to convey the crushed saline soil to the air separation module (5) for soil-salt separation; The backfill module (6) is arranged below the air separation module (5) and is used to backfill the soil separated by the air separation module (5).

2. The saline-alkali soil-salt separation device according to claim 1, characterized in that: A movable plate (32) is slidably provided below the traveling frame (1), and a lifting drive member (33) for driving the movable plate (32) to move up and down is also provided on the traveling frame (1). The first crushing roller (31) is rotatably connected to the bottom of the movable plate (32) via a mounting frame (34).

3. The saline-alkali soil-salt separation device according to claim 2, characterized in that: The first crushing roller (31) includes a first roller body and a rotation driving member (35) for driving the first roller body to rotate, the rotation driving member (35) is mounted on the mounting frame (34), the first roller body is rotationally connected to the mounting frame (34), and a plurality of metal serrations (311) are spaced apart on the outer peripheral surface of the first roller body.

4. The saline-alkali soil salt separation device according to claim 2, characterized in that: A second crushing roller (36) is rotatably provided on the movable plate (32), the second crushing roller (36) is parallel to the first crushing roller (31), and the second crushing roller (36) is transmission-connected to the first crushing roller (31) via an annular transmission mechanism (37), the annular transmission mechanism (37) being configured to allow the second crushing roller (36) to rotate synchronously and in the same direction as the first crushing roller (31), wherein the second crushing roller (36) comprises a second roller body, the second roller body being rotatably provided on the movable plate (32), and a plurality of rubber protrusions (361) being spaced apart on the outer periphery of the second roller body.

5. The saline-alkali soil salt separation device according to any one of claims 1 to 4, characterized in that: The conveying module (4) includes a chain bucket lifting mechanism, and the air separation module (5) includes a box (51) arranged above the traveling frame (1). The chain bucket lifting mechanism is passed through the traveling frame (1), and the front end of the chain bucket lifting mechanism extends to the bottom of the traveling frame (1), and the rear end of the chain bucket lifting mechanism extends into the box (51).

6. The saline-alkali soil-salt separation device according to claim 5, characterized in that: The air separation module (5) further comprises a guide plate (52) and a plurality of fans (53); a feed port (511) is provided on a side plate of the box body (51) close to the conveying module (4); the chain bucket lifting mechanism is arranged in the feed port (511); and a first drop port (512) is provided on the bottom plate of the box body (51). The guide plate (52) is obliquely arranged inside the box body (51), and the upper end is connected to the feed port (511), and the lower end extends to the first blanking port (512), wherein a receiving space (54) is reserved on a side of the first blanking port (512) away from the feed port (511), and a second blanking port (513) corresponding to the receiving space (54) is provided on the bottom plate of the box body (51); The multiple fans (53) are spaced apart on the top plate of the box body (51) and arranged close to the feed port (511); the angle of the fans (53) relative to the guide plate (52) is adjustable.

7. The saline-alkali soil-salt separation device according to claim 6, characterized in that: The backfill module (6) comprises a spiral conveying mechanism (61), the front end of the spiral conveying mechanism (61) is opposite to the first blanking port (512), the rear end of the spiral conveying mechanism (61) extends to the rear end of the traveling frame (1), and the rear end of the spiral conveying mechanism (61) is provided with a guide plate (62) extending obliquely toward the ground.

8. The saline-alkali soil salt separation device according to claim 6, characterized in that: The saline-alkali soil-salt separation device further comprises a centrifugal separation module (7), the centrifugal separation module (7) being arranged on the traveling frame (1) and located below the box body (51), the centrifugal separation module (7) being connected to the second drop port (513) and being used for performing secondary separation on the separated salt particles.

9. The saline-alkali soil salt separation device according to claim 5, characterized in that: The saline-alkali soil-salt separation device further comprises a transfer shovel (8), which is arranged below the traveling frame (1) and between the crushing module (3) and the conveying module (4). The transfer shovel (8) is arranged in an inclined manner, with the front end lower than the rear end, and the front end of the transfer shovel (8) is provided with a plurality of shovel teeth (81) capable of fitting with the ground, and the rear end of the transfer shovel (8) extends above the conveying module (4).

10. The saline-alkali soil salt separation device according to claim 9, characterized in that: A fixing plate (9) is provided below the traveling frame (1), and the fixing plate (9) is provided with at least a first mounting hole (91) and a second mounting hole (92) at intervals in the height direction. The rear end of the transfer shovel (8) is rotatably connected to the traveling frame (1), and a strip hole (82) is provided in the middle of the transfer shovel (8). A fastener (93) passes through the strip hole (82) and is selectively threadedly connected to the first mounting hole (91) or the second mounting hole (92).

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