Saline-alkali soil improvement device and improvement method

Abstract

The embodiment of the invention provides a saline-alkali soil improvement device and method, and relates to the technical field of soil improvement. The saline-alkali soil improvement device comprises a framework, rolling wheels are rotationally connected to the two sides of the framework, and a traction frame is fixedly connected to the center of the front face of the framework; hoppers are fixed to the top of the framework in an array mode, piston cylinders are fixedly connected to the two sides, close to the hoppers, of the framework, supply assemblies used for pressurizing and acting are arranged on the piston cylinders, and each supply assembly comprises a servo motor fixed to the center of the framework; a hopper is arranged on the framework, a main spraying assembly for deep soil improvement of the saline-alkali soil is arranged on the hopper and comprises a threaded pipe communicated with the bottom of the hopper, auxiliary spraying assemblies for shallow soil improvement of the saline-alkali soil are arranged on the two sides of the framework in an array mode, and each auxiliary spraying assembly comprises rollers rotationally arranged on the two sides of the framework in an array mode. And triple improvement effects of surface soil, shallow soil and deep soil of the saline-alkali soil are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of soil improvement, and in particular relates to a saline-alkali land soil improvement device and an improvement method. Background Art

[0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. Soil improvement refers to the use of theories and technologies from multiple disciplines such as soil science, biology, and ecology to eliminate or prevent adverse factors that affect the growth of crops and cause soil degradation, improve soil properties, increase soil fertility, and create good soil environmental conditions for crops.

[0003] In the prior art (publication number CN112534981B, patent name: A patent application for a soil rotary tillage composite improvement device and repair method for saline-alkali land), bevel gears are used to drive the rotary tillage blades on both sides to rotate, and the number of rotary tillage blades on both sides is adjusted according to the width of the soil, so as to improve the convenience of the rotary tillage blades for crushing and rotary tilling land of different widths. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] During the improvement and management of the soil in saline-alkali land, most of the time, only the surface soil of the saline-alkali land is improved, and the triple improvement and management operation of the surface, shallow and deep soil of the saline-alkali land cannot be carried out. Over time, the effect of improving the soil in the saline-alkali land is very small, and it also wastes manpower and increases the cost of improvement, which is not worth the cost. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems in the prior art that the surface, shallow and deep soils of saline-alkali land cannot be triple-improved and managed, and the soil improvement effect on saline-alkali land is very limited. To this end, the present application proposes a saline-alkali land soil improvement device and improvement method.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows: A saline-alkali soil improvement device comprises a frame, both sides of the frame are rotatably connected with rollers, and a traction frame is fixedly connected to the center of the front side of the frame; A hopper is fixed to the top array of the skeleton, and piston cylinders are fixedly connected to both sides of the skeleton near the hopper. A supply assembly for pressurizing and doing work is arranged on the piston cylinder, and the supply assembly includes a servo motor fixed at the center of the skeleton; The hopper is provided with a main spraying assembly for deep soil improvement in saline-alkali land, and the main spraying assembly includes a threaded pipe connected to the bottom of the hopper. Auxiliary spraying assemblies for shallow soil improvement in saline-alkali land are arranged in an array on both sides of the frame, and the auxiliary spraying assemblies include rollers rotating in an array on both sides of the frame.

[0007] Preferably: the supply assembly also includes a main bevel gear fixed on the output shaft of the servo motor, and a secondary bevel gear is meshed on the top of the main bevel gear, the inner cavity of the secondary bevel gear is fixedly connected to a long rod that rotatably cooperates with the hopper and the piston cylinder, and both ends of the long rod are fixedly connected to swing arms, a connecting rod is rotatably connected to the swing arm, and the other end of the connecting rod is hinged with a piston that slidably cooperates with the piston cylinder, the top of the piston cylinder is connected to a first three-way valve, and the top of the first three-way valve is connected to an intake pipe with an intake valve.

[0008] Preferably: the main spray assembly also includes a pressurized pipe connected to the inner end of the first three-way valve, and the bottom end of the pressurized pipe is connected to a four-way joint that is connected and cooperates with the hopper, and the hoppers are also connected with a first four-way valve that is interconnected and cooperates with the four-way joint, the bottom end of the threaded pipe is connected to a cache pipe, and the bottom end of the cache pipe is connected to a straight spray head, the straight spray head is connected to an inclined spray head, and the cache pipe is slidably connected to a turning head for turning the soil in saline-alkali land on one side close to the straight spray head.

[0009] Preferably: the auxiliary spray assembly also includes a boosting pipe connected to both ends of the four-way joint and the first four-way valve, and the boosting pipe located on the outside is connected to a second three-way valve, and the boosting pipe located on the inside is connected to a second four-way valve, a Y-shaped pipe connected to and coordinated with the hopper is connected between the second three-way valve and the second four-way valve, and a right-angle pipe is connected to the bottom end of the second three-way valve, and a three-way joint is connected to the bottom end of the second four-way valve, and the right-angle pipe, the three-way joint and the drum are interconnected, and a soil-breaking cone is fixedly connected to the four sides of the drum, and spraying holes connected to and coordinated with the drum are opened around the soil-breaking cone.

[0010] Preferably: a main metering sensor is embedded on one side of the hopper close to the threaded tube, and a material cover is fastened on the top of the hopper via a drawstring.

[0011] Preferably, a screw is fixedly connected to one side of the cache tube close to the soil turning head, and a vertical groove for use with the screw is provided on the soil turning head, and a tightening head is threadedly connected to the screw.

[0012] Preferably: pressure sensors are embedded at the outer ends of the first three-way valve and the second three-way valve, and the drum adopts a hollow structure design.

[0013] Preferably, both ends of the drum are connected with a connecting end portion, and the outer end of the connecting end portion is rotatably connected with a rotating end portion that is connected and matched with the right-angle pipe and the three-way joint.

[0014] Preferably, an auxiliary metering sensor is embedded at the outer end of the right-angle tube, and a shield that cooperates with the spray hole on the soil-breaking cone is fixedly connected to the side of the frame close to the drum.

[0015] A method for improving saline-alkali land soil, according to the saline-alkali land soil improvement device, comprises the following steps: Step 1. First, according to the current improvement depth of the saline-alkali land soil, the vertical groove provides spatial sliding support for the screw, and a row of soil-turning heads are slid up and down along the buffer tube for adjustment. After the soil-turning heads are adjusted up and down, the tightening head is tightened onto the screw, and the adjusted soil-turning heads are fixed on the buffer tube and cover the straight nozzle and the inclined nozzle. Under the cooperation of the rollers on both sides for moving the skeleton, the traction equipment is connected to the traction frame through the pin shaft, and the skeleton is driven to move in the saline-alkali land area. At the same time, the skeleton drives a row of soil-turning heads and the soil-breaking cones on the two rows of rollers to turn over and crush the deep and shallow soil of the saline-alkali land, and controls the servo motor to start and drive the main bevel gear to rotate. The main bevel gear drives the long rod on the secondary bevel gear to rotate accordingly, and the long rod also drives the two sets of swing arms to rotate. The two sets of swing arms drive the pistons on the two connecting rods to perform reciprocating work in the two sets of piston cylinders; Step 2, at the same time, the boost air source generated in the two groups of piston cylinders is supplied to the four-way joints on the two pressure pipes through the two groups of first three-way valves, and then the first four-way valve blows the boost air source into the hopper in the state of the material cover blocking. With the continuous supply of the boost air source, the boost pressure in the hopper increases rapidly. Under the action of the pressure, the improver in a row of hoppers is forced to be supplied into the buffer pipe through the threaded pipe, and then sprayed on the soil area turned out by the soil turning head by the straight nozzle and the oblique nozzle, so as to improve the turned out deep soil area, and the main metering sensor quantitatively detects the spraying amount of the improver in a row of hoppers; Step 3: The boosting air source in the four-way joint and the first four-way valve is also supplied into the two rows of boosting pipes through the second three-way valve and the second four-way valve respectively, and the supplied boosting air source is pressurized again. At the same time, the improver in the hopper is also supplied into the two rows of boosting pipes on the second four-way valve through the Y-tube and merged with the boosting air source. Under the action of the pressure, the improver in the two rows of boosting pipes is forced to quickly pass through the rotating end and the connecting end of the three-way joint and be pre-supplied into the two rows of rollers, and the boosting air source in the two rows of boosting pipes on the second three-way valve passes through The rotating end and the connecting end on the right-angle tube are also supplied to the two rows of drums, and the improver in the two rows of drums is pressurized again, forcing the improver reaching the two rows of drums to be sprayed to the broken shallow saline-alkali soil area through the spray holes on the soil-breaking cone, and the improver sprayed from the spray holes is blocked by two rows of protective covers, and the blocked improver drips on the surface of the broken saline-alkali soil, and the auxiliary metering sensor monitors the metering of the improver supplied to the two rows of drums in real time, so as to realize the improvement of the surface, shallow and deep layers of the saline-alkali soil.

[0016] The saline-alkali soil improvement device and improvement method of the present invention have the following advantages: 1. A saline-alkali soil improvement device and improvement method, firstly, a servo motor provides a unified driving source, and the main bevel gear and the auxiliary bevel gear drive the swing arms at both ends of the long rod to rotate, and the two sets of swing arms drive the pistons on the two connecting rods to perform reciprocating work in the two sets of piston cylinders and generate a pressurized air source, and then the pressurized air source generated in the two sets of piston cylinders is supplied to the two sets of first three-way valves to provide a pressurized supply for the subsequent spraying of the improver.

[0017] 2. The device and method for improving the saline-alkali land soil, firstly, a row of soil turning heads following the movement of the skeleton performs deep soil turning operations on the saline-alkali land, while the pressurized air sources in the two groups of first three-way valves are supplied into a row of hoppers through the four-way joints on the two pressure pipes and the first four-way valves. Under the action of the pressure, the improver in the row of hoppers is forced to be sprayed from the threaded pipe through the straight nozzle and the oblique nozzle on the buffer pipe to the turned saline-alkali land deep soil area, so as to improve the saline-alkali land deep soil.

[0018] 3. The saline-alkali soil improvement device and improvement method, then, the framework first drives the soil-breaking cones on the two rows of rollers to roll and crush the saline-alkali soil in a shallow layer, while the pressurized air source in the four-way joint and the first four-way valve is correspondingly supplied to the two rows of pressurized pipes through the second three-way valve and the second four-way valve, and at the same time, the improver in the hopper is also supplied to the two rows of pressurized pipes through the two rows of Y-shaped pipes, and the pressurized improver is then supplied to the two rows of rollers through the rotating ends and the connecting ends on the two rows of three-way joints; At the same time, the pressurized air source in the two rows of booster pipes on the two rows of second three-way valves is also supplied to the two rows of drums through the rotating ends and connecting ends on the two rows of right-angle tubes, forcing the improver in the two rows of drums to be sprayed through the spray holes on the soil-breaking cone to the shallow broken soil area of ​​the saline-alkali land. The improver sprayed out of the spray holes is blocked by the protective cover, and the blocked improver is dripped to the surface layer of the broken soil in the saline-alkali land, thereby achieving the triple improvement effect of the surface, shallow and deep layers of the saline-alkali soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic structural diagram of a saline-alkali soil improvement device and improvement method of the present invention; Figure 2 It is a rear view of the structure of a saline-alkali soil improvement device and improvement method of the present invention; Figure 3A partial top view of the structure of a saline-alkali soil improvement device and improvement method of the present invention; Figure 4 It is a partial side view of the structure of a saline-alkali soil improvement device and improvement method of the present invention; Figure 5 It is a structural side view of the hopper, piston cylinder, supply assembly, main spray assembly and auxiliary spray assembly of the present invention; Figure 6 It is a partial side cross-sectional view of the hopper, piston cylinder, supply assembly and main spray assembly structure of the present invention; Figure 7 It is a partial side view of the hopper and the main spray assembly structure of the present invention; Figure 8 It is a partial exploded view of the main spraying assembly structure of the present invention; Fig. 9 It is a structural exploded view of the hopper, the first three-way valve, the main spray assembly and the auxiliary spray assembly of the present invention; Fig.10 It is a partial exploded view of the auxiliary spraying assembly structure of the present invention; Fig.11 It is a partial cross-sectional view of the drum structure of the present invention; Fig.12 It is a side view of the hopper, supply assembly and mixing assembly structure of the present invention; Fig.13 It is a cross-sectional view of the structure of the hopper, the supply assembly and the mixing assembly of the present invention; Fig.14 It is a structural exploded view of the stirring component of the present invention.

[0021] Explanation of the marks in the figure: 1. frame; 2. roller; 3. traction frame; 4. hopper; 5. piston cylinder; 6. supply assembly; 61. servo motor; 62. main bevel gear; 63. secondary bevel gear; 64. long rod; 65. swing arm; 66. connecting rod; 67. piston; 68. first three-way valve; 7. main spray assembly; 71. pressurizing pipe; 72. four-way joint; 73. first four-way valve; 74. threaded pipe; 75. cache pipe; 76. straight nozzle; 77. oblique nozzle; 78. soil turning head; 8. auxiliary spray assembly; 81. pressurizing pipe; 82. second three-way valve ;83. Second four-way valve;84. Y-type tube;85. Right-angle tube;86. Roller;87. Three-way joint;88. Soil-breaking cone;89. Spray hole;9. Mixing component;91. Stirring blade;92. Arc frame;93. Through slot;94. Reserved opening;95. Rotating shaft;96. Bump;97. Turbine blade;10. Main metering sensor;11. Material cover;12. Draw buckle;13. Screw;14. Vertical groove;15. Tightening head;16. Pressure sensor;17. Connecting end;18. Rotating end;19. Auxiliary metering sensor;20. Protective cover. DETAILED DESCRIPTION

[0022] The present invention is specifically described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1-Figure 14 As shown, a saline-alkali soil improvement device of the present invention comprises a frame 1, rollers 2 are rotatably connected to both sides of the frame 1, and a traction frame 3 is fixedly connected to the center of the front of the frame 1; a hopper 4 is fixed to the top array of the frame 1, and piston cylinders 5 are fixedly connected to both sides of the frame 1 close to the hopper 4, and a supply assembly 6 for pressurized work is provided on the piston cylinder 5, and the supply assembly 6 comprises a servo motor 61 fixed at the center of the frame 1, and the servo motor 61 provides a unified driving source, which saves the cost of the driving power source and provides pressurized supply for subsequent spraying of the improver; A main spraying assembly 7 for improving deep soil in saline-alkali land is provided on the hopper 4, and the main spraying assembly 7 includes a threaded pipe 74 connected to the bottom of the hopper 4, which sprays the improver to the turned-over deep soil area of ​​the saline-alkali land to improve the deep soil in the saline-alkali land. Auxiliary spraying assemblies 8 for improving shallow soil in saline-alkali land are arranged in an array on both sides of the skeleton 1, and the auxiliary spraying assembly 8 includes rollers 86 rotating in an array on both sides of the skeleton 1, which spray the improver to the shallow broken soil area of ​​the saline-alkali land, and the protective cover 20 blocks the improver sprayed from the spray hole 89, thereby achieving the triple improvement effect of the surface, shallow and deep soil of the saline-alkali land.

[0023] like Figure 5-Figure 11 As shown, the supply assembly 6 also includes a main bevel gear 62 fixed on the output shaft of the servo motor 61, and the top of the main bevel gear 62 is meshed with a sub-bevel gear 63, the inner cavity of the sub-bevel gear 63 is fixedly connected with a long rod 64 that rotates with the hopper 4 and the piston cylinder 5, and both ends of the long rod 64 are fixedly connected with swing arms 65, the servo motor 61 provides a unified driving source, and the main bevel gear 62 and the sub-bevel gear 63 drive the swing arms 65 at both ends of the long rod 64 to rotate, and the swing arms 65 are connected to the rotating shaft 64. A connecting rod 66 is connected, and the other end of the connecting rod 66 is hinged with a piston 67 that slides with the piston cylinder 5. The two sets of swing arms 65 drive the pistons 67 on the two connecting rods 66 to perform reciprocating work in the two sets of piston cylinders 5 and generate a pressurized air source. The top of the piston cylinder 5 is connected to a first three-way valve 68, and the top of the first three-way valve 68 is connected to an intake pipe with an intake valve. The pressurized air source generated in the two sets of piston cylinders 5 is then supplied to the two sets of first three-way valves 68 to provide a pressurized supply for subsequent spraying of the improver.

[0024] The main spraying assembly 7 also includes a pressurized pipe 71 connected to the inner end of the first three-way valve 68, and the bottom end of the pressurized pipe 71 is connected to a four-way joint 72 connected to the hopper 4, and the hopper 4 is also connected to a first four-way valve 73 that is mutually connected and cooperates with the four-way joint 72. First, a row of soil turning heads 78 that follow the skeleton 1 to move deeply turn the soil in the saline-alkali land, while the pressurized air source in the two groups of first three-way valves 68 is supplied to a row of materials through the four-way joints 72 on the two pressurized pipes 71 and the first four-way valve 73. In the hopper 4, the bottom end of the threaded tube 74 is connected to a buffer tube 75, and the bottom end of the buffer tube 75 is connected to a straight spray head 76, and the straight spray head 76 is connected to an oblique spray head 77, and the side of the buffer tube 75 close to the straight spray head 76 is slidably connected to a soil turning head 78 for turning over the saline-alkali land soil. Under the action of pressure, the improver in a row of the hopper 4 is forced to be sprayed from the threaded tube 74 through the straight spray head 76 and the oblique spray head 77 on the buffer tube 75 to the turned over saline-alkali land deep soil area, so as to improve the saline-alkali land deep soil; A main metering sensor 10 is embedded on one side of the hopper 4 close to the threaded tube 74, which monitors the metering of the improver entering the threaded tube 74 in the hopper 4 in real time, thereby preventing the improver from being wasted in a quantitative manner. A material cover 11 is fastened to the top of the hopper 4 through a draw buckle 12, thereby sealing the hopper 4. A screw 13 is fixedly connected to one side of the cache tube 75 close to the soil-turning head 78, and a vertical groove 14 for use with the screw 13 is provided on the soil-turning head 78. A tightening head 15 is threadedly connected to the screw 13, which is convenient for adjusting the height of the soil-turning head 78 and achieving deep soil turning for saline-alkali soil.

[0025] The auxiliary spraying assembly 8 also includes a boosting pipe 81 connected to both ends of the four-way joint 72 and the first four-way valve 73, and the boosting pipe 81 located on the outside is connected to the second three-way valve 82. The framework 1 first drives the soil-breaking cones 88 on the two rows of rollers 86 to roll and crush the saline-alkali soil in the shallow layer. At the same time, the boosting air source in the four-way joint 72 and the first four-way valve 73 is correspondingly supplied to the two rows of boosting pipes 81 through the second three-way valve 82 and the second four-way valve 83. The boosting pipe 81 located on the inside is connected to the second three-way valve 82. A second four-way valve 83 is connected, a Y-shaped tube 84 that is connected and matched with the hopper 4 is connected between the second three-way valve 82 and the second four-way valve 83, and the bottom end of the second three-way valve 82 is connected with a right-angle tube 85, and the bottom end of the second four-way valve 83 is connected with a three-way joint 87. The improver in the hopper 4 is also supplied to the two rows of boosting pipes 81 through the two rows of Y-shaped tubes 84, and the boosted improver is then supplied to the two rows of rollers 86 through the rotating ends 18 and the connecting ends 17 on the two rows of three-way joints 87; The right-angle tube 85, the three-way joint 87 and the drum 86 are interconnected, and the drum 86 is fixedly connected with a soil-breaking cone 88 on all sides, and the soil-breaking cone 88 is provided with a spray hole 89 connected and matched with the drum 86 on all sides. The pressurized air source in the two rows of booster pipes 81 on the two rows of second three-way valves 82 is also supplied to the two rows of drums 86 through the rotating end 18 and the connecting end 17 on the two rows of right-angle tubes 85, forcing the improver in the two rows of drums 86 to be sprayed to the shallow broken soil area of ​​the saline-alkali land through the spray hole 89 on the soil-breaking cone 88, and the anti-blocking cover 20 blocks the improver sprayed from the spray hole 89, and makes the blocked improver drip to the surface layer of the broken soil in the saline-alkali land, so as to achieve the triple improvement effect of the surface layer, shallow layer and deep layer of the saline-alkali land soil; The outer ends of the first three-way valve 68 and the second three-way valve 82 are both embedded with a pressure sensor 16 to monitor the pressure passing through the first three-way valve 68 and the second three-way valve 82 in real time, and the drum 86 adopts a hollow structure design, which is conducive to the entry of the improver into the drum 86. Both ends of the drum 86 are connected with a connecting end 17, and the outer end of the connecting end 17 is rotatably connected with a rotating end 18 that is connected and matched with the right-angle tube 85 and the three-way joint 87, which plays a role in the rotational connection between the right-angle tube 85 and the three-way joint 87 and the drum 86, and does not affect In response to the normal rotation of the drum 86, an auxiliary metering sensor 19 is embedded at the outer end of the right-angle tube 85 to monitor the metering of the improver entering the drum 86 in real time, and a shield 20 is fixedly connected to the side of the skeleton 1 close to the drum 86, which cooperates with the injection hole 89 on the soil-breaking cone 88 to block the improver sprayed from the injection hole 89. At the same time, it is also beneficial for the improver blocked on the shield 20 to drip onto the surface of the broken soil in the saline-alkali land, thereby playing an auxiliary improvement role, extending the improvement time of the saline-alkali land soil, and enhancing the improvement effect of the saline-alkali land soil.

[0026] like Figure 12-14 As shown, during the improvement and treatment of saline-alkali soil, it is necessary to transport the improver from elsewhere to the site and then pour it into the hopper 4, which wastes time and cannot be prepared in real time at the improvement site, thereby reducing the improvement efficiency of the saline-alkali soil. A stirring assembly 9 is provided in the hopper 4, and the stirring assembly 9 includes a stirring blade 91 fixed to a side of the long rod 64 close to the hopper 4. The long rod 64 drives the stirring blade 91 to stir the improver raw material in the hopper 4. The hopper 4 is fixedly connected with an arc frame 92 on both sides near the stirring blade 91, and a through slot 93 is provided on the inner side of the arc frame 92 for interlacing with the stirring blade 91. With the cooperation of the through slot 93, the stirring blade 91 interlaces and stirs the improver raw material. A reserved opening 94 is provided on the top of the arc frame 92, and a rotating shaft 95 is rotatably connected to the inner side of the arc frame 92. The center of the rotating shaft 95 is fixedly connected with a protrusion 96 for knocking with the stirring blade 91, and both sides of the rotating shaft 95 are fixedly connected with a spoiler blade 97. The stirring blade 91 drives the spoiler blade 97 on the rotating shaft 95 to rotate by knocking the protrusion 96, and cooperates with the stirring blade 91 to achieve the effect of stirring and disturbing the improver raw material in the hopper 4, thereby accelerating the preparation rate of the improver, so that it can be prepared on-site and used on-site, and the improvement efficiency of saline-alkali land soil is improved.

[0027] A method for improving saline-alkali soil, based on a saline-alkali soil improvement device, comprises the following steps: Step 1. First, according to the current improvement depth of the saline-alkali land soil, the vertical groove 14 provides spatial sliding support for the screw 13, and a row of soil-turning heads 78 are slid up and down along the buffer tube 75 for adjustment. After the soil-turning heads 78 are adjusted up and down, the tightening head 15 is tightened onto the screw 13, and the adjusted soil-turning heads 78 are fixed on the buffer tube 75 and cover the straight nozzle 76 and the oblique nozzle 77. Then, under the cooperation of the rollers 2 on both sides of the skeleton 1, the traction equipment is connected to the traction frame 3 through the pin shaft, and the skeleton 1 is driven to move in the saline-alkali land area. The skeleton 1 drives a row of soil-turning heads 78 and the soil-breaking cones 88 on the two rows of rollers 86 to turn over and crush the deep and shallow soil of the saline-alkali land. At the same time, the servo motor 61 is controlled to start and drive the main bevel gear 62 to rotate, and the main bevel gear 62 drives the long rod on the secondary bevel gear 63 64 rotates accordingly, and the long rod 64 also drives the two groups of swing arms 65 to rotate. The two groups of swing arms 65 drive the pistons 67 on the two connecting rods 66 to perform reciprocating work in the two groups of piston cylinders 5. Prior to this, the improver raw materials are poured into a row of hoppers 4 in turn, and the material cover 11 is tightly covered on the hopper 4 by clamping the buckle 12, and the stirring blade 91 is inserted and matched by the through slot 93 on the arc frame 92. Then, the long rod 64 drives the stirring blade 91 to stir the improver raw materials in the hopper 4. At the same time, the stirring blade 91 drives the spoiler blade 97 on the rotating shaft 95 to rotate in the arc frame 92 by knocking the protrusion 96. After the reserved opening 94 expands the flow space of the improver raw materials in the hopper 4 on the arc frame 92, the stirring blade 91 and the spoiler blade 97 stir the improver raw materials in the hopper 4 while performing spoiler treatment until the improver is prepared; Step 2, at the same time, the boost air source generated in the two groups of piston cylinders 5 is supplied to the four-way joints 72 on the two pressure pipes 71 through the two groups of first three-way valves 68, and then the first four-way valve 73 blows the boost air source into the hopper 4 in the blocked state of the material cover 11. With the continuous supply of the boost air source, the boost pressure in the hopper 4 increases rapidly. Under the action of the pressure, the improver in a row of hoppers 4 is forced to be supplied into the buffer pipe 75 through the threaded pipe 74, and then sprayed on the soil area turned out by the soil turning head 78 by the straight nozzle 76 and the oblique nozzle 77, so as to improve the turned out deep soil area, and the main metering sensor 10 quantitatively detects the spraying amount of the improver in a row of hoppers 4; Step 3: The boosting air source in the four-way joint 72 and the first four-way valve 73 is also supplied to the two rows of boosting pipes 81 through the second three-way valve 82 and the second four-way valve 83, and the supplied boosting air source is pressurized again. At the same time, the improver in the hopper 4 is also supplied to the two rows of boosting pipes 81 on the second four-way valve 83 through the Y-shaped pipe 84 and merged with the boosting air source. Under the action of the pressure force, the improver in the two rows of boosting pipes 81 is forced to quickly pass through the rotating end 18 and the connecting end 17 on the three-way joint 87 and be pre-supplied into the two rows of rollers 86, and the boosting air in the two rows of boosting pipes 81 on the second three-way valve 82 is The air source is also supplied to the two rows of rollers 86 through the rotating end 18 and the connecting end 17 on the right-angle tube 85, and the improver in the two rows of rollers 86 is pressurized again, forcing the improver reaching the two rows of rollers 86 to be sprayed toward the broken shallow saline-alkali soil area through the spray hole 89 on the soil-breaking cone 88, and the improver sprayed from the spray hole 89 is blocked by two rows of protective covers 20, and the blocked improver drips on the surface of the broken saline-alkali soil, and the auxiliary metering sensor 19 monitors the metering of the improver supplied to the two rows of rollers 86 in real time, so as to realize the improvement of the surface, shallow and deep layers of the saline-alkali soil.

[0028] It should be noted that the specific model and specifications of the servo motor 61 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0029] The power supply circuits of the servo motor 61 and various valves and sensors are clear to those skilled in the art and will not be described in detail here.

[0030] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A saline-alkali soil improvement device, comprising a frame (1), characterized in that: Rollers (2) are rotatably connected to both sides of the frame (1), and a traction frame (3) is fixedly connected to the center of the front side of the frame (1); A hopper (4) is fixed to the top array of the skeleton (1), and piston cylinders (5) are fixedly connected to both sides of the skeleton (1) close to the hopper (4), and a supply assembly (6) for pressurizing and performing work is arranged on the piston cylinder (5), and the supply assembly (6) includes a servo motor (61) fixed at the center of the skeleton (1); The hopper (4) is provided with a main spraying assembly (7) for deep soil improvement in saline-alkali land, and the main spraying assembly (7) comprises a threaded pipe (74) connected to the bottom of the hopper (4). Auxiliary spraying assemblies (8) for shallow soil improvement in saline-alkali land are arranged in an array on both sides of the frame (1), and the auxiliary spraying assemblies (8) comprise rollers (86) rotating in an array on both sides of the frame (1).

2. The saline-alkali soil improvement device according to claim 1, characterized in that: The supply assembly (6) further comprises a main bevel gear (62) fixed on the output shaft of the servo motor (61), and a secondary bevel gear (63) is meshed at the top of the main bevel gear (62), a long rod (64) rotatably matched with the hopper (4) and the piston cylinder (5) is fixedly connected to the inner cavity of the secondary bevel gear (63), and swing arms (65) are fixedly connected at both ends of the long rod (64), a connecting rod (66) is rotatably connected to the swing arm (65), and a piston (67) slidably matched with the piston cylinder (5) is hinged at the other end of the connecting rod (66), and a first three-way valve (68) is connected to the top of the piston cylinder (5), and a suction pipe with a suction valve is connected to the top of the first three-way valve (68).

3. A saline-alkali soil improvement device according to claim 2, characterized in that: The main spray assembly (7) further comprises a pressurizing pipe (71) connected to the inner end of the first three-way valve (68), and the bottom end of the pressurizing pipe (71) is connected to a four-way joint (72) connected to and matched with the hopper (4), and the hopper (4) is also connected to a first four-way valve (73) that is mutually connected and matched with the four-way joint (72), the bottom end of the threaded pipe (74) is connected to a buffer pipe (75), and the bottom end of the buffer pipe (75) is connected to a straight spray head (76), the straight spray head (76) is connected to an oblique spray head (77), and a soil turning head (78) for turning saline-alkali soil is slidably connected to a side of the buffer pipe (75) close to the straight spray head (76).

4. The saline-alkali soil improvement device according to claim 3, characterized in that: The auxiliary spraying assembly (8) further comprises a boosting pipe (81) connected to both ends of the four-way joint (72) and the first four-way valve (73), and the boosting pipe (81) located on the outside is connected to the second three-way valve (82), and the boosting pipe (81) located on the inside is connected to the second four-way valve (83), a Y-shaped pipe (84) connected to and matched with the hopper (4) is connected between the second three-way valve (82) and the second four-way valve (83), and the bottom end of the second three-way valve (82) is connected to a right-angle pipe (85), and the bottom end of the second four-way valve (83) is connected to a three-way joint (87), and the right-angle pipe (85), the three-way joint (87) and the drum (86) are interconnected, and the drum (86) is fixedly connected to a soil-breaking cone (88) on all sides, and the soil-breaking cone (88) is provided with a spraying hole (89) on all sides thereof, which is connected to and matched with the drum (86).

5. The saline-alkali soil improvement device according to claim 4, characterized in that: A main metering sensor (10) is embedded on one side of the hopper (4) close to the threaded tube (74), and a material cover (11) is fastened to the top of the hopper (4) via a drawstring (12).

6. The saline-alkali soil improvement device according to claim 5, characterized in that: A screw rod (13) is fixedly connected to one side of the buffer tube (75) close to the soil turning head (78), and a vertical groove (14) for use with the screw rod (13) is provided on the soil turning head (78), and a tightening head (15) is threadedly connected to the screw rod (13).

7. The saline-alkali soil improvement device according to claim 6, characterized in that: The outer ends of the first three-way valve (68) and the second three-way valve (82) are both embedded with pressure sensors (16), and the roller (86) adopts a hollow structure design.

8. The saline-alkali soil improvement device according to claim 7, characterized in that: Both ends of the drum (86) are connected to a connecting end portion (17), and the outer end of the connecting end portion (17) is rotatably connected to a rotating end portion (18) that is connected and matched with the right-angle tube (85) and the three-way joint (87).

9. The saline-alkali soil improvement device according to claim 8, characterized in that: An auxiliary metering sensor (19) is embedded in the outer end of the right-angle tube (85), and a blocking cover (20) that cooperates with the spray hole (89) on the soil-breaking cone (88) is fixedly connected to one side of the frame (1) close to the roller (86).

10. A method for improving saline-alkali soil, according to the saline-alkali soil improvement device according to claim 9, characterized in that: The steps include: Step 1: First, according to the current improvement depth of the saline-alkali soil, the vertical groove (14) provides spatial sliding support for the screw (13), and a row of soil turning heads (78) are slid up and down along the buffer tube (75) for adjustment. After the soil turning heads (78) are adjusted up and down, the tightening head (15) is tightened onto the screw (13), and the adjusted soil turning heads (78) are fixed on the buffer tube (75) and the straight nozzle (76) and the oblique nozzle (77) are covered. Then, the rollers (2) on both sides move the skeleton (1) and connect the traction device to the traction frame (3) through the pin shaft. The frame (1) is driven to move in the saline-alkali land area, and the frame (1) drives a row of soil turning heads (78) and soil breaking cones (88) on two rows of rollers (86) to turn over and crush the deep and shallow soils of the saline-alkali land. At the same time, the servo motor (61) is controlled to start and drive the main bevel gear (62) to rotate. The main bevel gear (62) drives the long rod (64) on the secondary bevel gear (63) to rotate accordingly. The long rod (64) also drives the two sets of swing arms (65) to rotate. The two sets of swing arms (65) drive the pistons (67) on the two connecting rods (66) to perform reciprocating work in the two sets of piston cylinders (5); Step 2, at the same time, the boosted air source generated in the two groups of piston cylinders (5) is supplied to the four-way joints (72) on the two pressure pipes (71) through the two groups of first three-way valves (68), and then the first four-way valve (73) blows the boosted air source into the hopper (4) in the blocked state of the material cover (11). With the continuous supply of the boosted air source, the boosted pressure in the hopper (4) increases rapidly. Under the action of the pressure, the improver in a row of hoppers (4) is forced to be supplied into the buffer pipe (75) through the threaded pipe (74), and then sprayed on the soil area turned out by the soil turning head (78) by the straight nozzle (76) and the oblique nozzle (77), so as to improve the turned out deep soil area, and the main metering sensor (10) quantitatively detects the spraying amount of the improver in the row of hoppers (4); Step 3: The pressurized air source in the four-way connector (72) and the first four-way valve (73) is also supplied to the two rows of pressurized pipes (81) through the second three-way valve (82) and the second four-way valve (83), and the supplied pressurized air source is pressurized again. At the same time, the improver in the hopper (4) is also supplied to the two rows of pressurized pipes (81) on the second four-way valve (83) through the Y-shaped pipe (84) and merged with the pressurized air source. Under the action of the pressure force, the improver in the two rows of pressurized pipes (81) is forced to quickly pass through the rotating end (18) and the connecting end (17) on the three-way connector (87) and be pre-supplied into the two rows of rollers (86). The two rows of pressurized pipes (81) on the second three-way valve (82) are The pressurized air source inside is also supplied to the two rows of rollers (86) through the rotating end (18) and the connecting end (17) on the right-angle tube (85), and the improver in the two rows of rollers (86) is pressurized again, forcing the improver in the two rows of rollers (86) to be sprayed toward the broken shallow saline-alkali soil area through the spray hole (89) on the soil-breaking cone (88), and the improver sprayed from the spray hole (89) is blocked by the two rows of protective shields (20), and the blocked improver drips on the surface of the broken saline-alkali soil, and the auxiliary metering sensor (19) monitors the metering of the improver supplied to the two rows of rollers (86) in real time, thereby realizing the improvement work of the surface, shallow and deep layers of the saline-alkali soil.

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