Saline-alkali soil improvement liquid spraying device and saline-alkali soil improvement method

Abstract

The invention discloses a saline-alkali soil improvement liquid spraying device and a saline-alkali soil improvement method, and relates to the technical field of soil improvement. The saline-alkali soil improvement liquid spraying device comprises a frame, a rotary tillage roller, an elevator and a supporting assembly are sequentially installed on the frame from front to back in the moving direction, and the rotary tillage roller turns over surface soil towards the side close to the elevator; the hoister conveys soil at the rotary tillage roller to the supporting assembly; the supporting assembly comprises a first annular plate and a second annular plate, and the first annular plate and the second annular plate are arranged in a staggered mode. When the tool bit rotates to the upper side of the supporting assembly along with the conveying assembly, soil on the supporting assembly can be pushed to fall onto the ground again and cover the surface of inner-layer soil, meanwhile, the improvement liquid covers the interior, the improvement liquid permeates into the surface-layer soil in the evaporation process and cannot be directly volatilized into air, and the utilization rate of the improvement liquid is increased.

Description

Technical Field

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

[0002] As an important land resource in my country, saline-alkali land accounts for a large proportion of the country. Saline-alkali land will seriously inhibit agricultural development. When the salinity in the soil is too high, the amount of vegetation will decrease, the surface cover will be insufficient or exposed, resulting in large evaporation, and then leading to natural disasters such as drought and sandstorms, which have caused serious damage to the ecological environment. Therefore, it is necessary to improve the saline-alkali land to improve soil properties, increase soil fertility, and create good soil environment conditions for crops.

[0003] In the prior art, soil improvement devices are usually used to treat saline-alkali land. The properties of the soil are adjusted by loosening the soil and spraying the improvement liquid. However, there are the following problems: the improvement liquid is easily evaporated when sprayed on the soil, and the utilization rate needs to be improved. Moreover, by mixing the improvement liquid with the soil, the evaporation of the improvement liquid in the surface soil cannot be avoided. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a saline-alkali land improvement liquid spraying device and a saline-alkali land soil improvement method, which solve the problems raised in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a saline-alkali land improvement liquid spraying device, comprising a frame, on which a rotary tillage roller, a hoist and a support assembly are installed in sequence from front to back along the moving direction, wherein: the rotary tillage roller turns the surface soil to the side close to the hoist; the hoist transports the soil at the rotary tillage roller to the support assembly; the support assembly comprises a first annular plate and a second annular plate, the first annular plate and the second annular plate are arranged alternately, and a gap is left between adjacent first annular plates and second annular plates; it also includes: a conveying assembly, the conveying assembly is arranged in the gap, the conveying assembly rotates around the support assembly, the conveying assembly comprises a cutter head, when the cutter head is located on the lower side of the support assembly, the cutter head turns the ground, and when the cutter head is located on the upper side of the support assembly, the soil on the support assembly is pushed to the side away from the rotary tillage roller; a spraying assembly, the spraying assembly is installed on the support assembly, the spraying assembly comprises a nozzle, and the nozzle is arranged on the lower side of the support assembly.

[0006] Furthermore, the cutter head is composed of a middle plate and a plowing part, and a plowing part is fixedly provided on both sides of the middle plate; when the cutter head is located at the lower side of the support assembly, the line connecting the two plowing parts is perpendicular to the moving direction of the frame, and the distance between adjacent cutter heads is the largest; when the cutter head is located at the upper side of the support assembly, the line connecting the two plowing parts is parallel to the moving direction of the frame, and the distance between adjacent cutter heads is the smallest.

[0007] Furthermore, the conveying assembly also includes: a mounting plate, the mounting plate is arranged in the gap, the cutter head is mounted on the mounting plate through a rotating shaft, and the cutter head is fixedly connected to the rotating shaft; a flexible belt, the flexible belt is connected between adjacent mounting plates, and the flexible belt is used to transport soil located in the gap; a sleeve is fixedly provided on the side of the mounting plate away from the cutter head, and a spiral groove is opened on the sleeve; a first guide rod is fixedly provided on the rotating shaft, and the first guide rod can slide in the spiral groove to rotate the rotating shaft.

[0008] Furthermore, a connecting piece is provided at one end of the rotating shaft away from the cutting head, and the connecting piece is rotatably connected to the rotating shaft; a second guide rod is fixedly provided on one side of the rotating shaft, and the axis of the second guide rod is parallel to the horizontal plane; a first inner support plate is fixedly provided in the first annular plate, and constraint grooves are provided on both sides of the first inner support plate, and the second guide rod can slide in the constraint groove; the vertical distance between the side of the constraint groove close to the upper end of the first annular plate and the axis of the first annular plate is smaller than the side of the constraint groove close to the lower end of the first annular plate.

[0009] Furthermore, a connecting plate is fixedly provided on one side of the mounting plate, and a guide wheel is fixedly provided on a side of the connecting plate away from the mounting plate; guide rails are fixedly provided on both sides of the second annular plate, the guide wheel moves along the guide rails, and the guide wheel is supported by the guide rails; a second inner support plate is fixedly provided in the second annular plate, and second extension plates are provided on both sides of the second inner support plate, and a gap is formed between the outer wall of the second extension plate and the inner wall of the second annular plate; a second chain is provided in the gap, and one side of the second chain is fixedly connected to the connecting plate.

[0010] Furthermore, a driving column is fixedly provided on the side of the second chain away from the connecting plate; a first chain is provided on one side of the second chain, the first chain is arranged parallel to the second chain, and both ends of the first chain are located outside the supporting assembly; a pushing block is fixedly provided on the side of the first chain close to the second chain, one side of the pushing block is an open end, and when the first chain moves toward the open end, the pushing block pushes the driving column to move the second chain.

[0011] Furthermore, a series connection plate is provided inside the support assembly, and the first inner support plate and the second inner support plate are both fixedly connected to the series connection plate; and both ends of the series connection plate are fixedly connected to the frame.

[0012] Furthermore, a first pipe is opened in the series plate in the horizontal direction, and a second pipe is opened in the series plate in the vertical direction, and the first pipe is connected to the second pipe; a docking pipe is opened in the first inner support plate, and the docking pipe is connected to the first pipe; the spray assembly also includes: a water inlet pipe, which is installed on the frame and is used to introduce improved liquid; a first water branch pipe, which is arranged in the first pipe and is connected to the water inlet pipe; a second water branch pipe; the second water branch pipe is arranged in the docking pipe, and one side of the second water branch pipe is connected to the first water branch pipe after passing through the second pipe; the nozzle is installed on the lower side of the first annular plate, and the nozzle is connected to the second water branch pipe.

[0013] Furthermore, a running wheel is provided at one end of the frame away from the rotary tillage roller, and the running wheel can move in a vertical direction to adjust the inclination angle between the frame and the ground.

[0014] The present invention also provides a saline-alkali land soil improvement method, which is applicable to the saline-alkali land improvement liquid spraying device, and comprises the following steps: Step 1: Fixed-point detection of soil total salt content, soil pH value, soil organic matter, and soil nutrient status; Step 2: Use an engineering vehicle to drag the saline-alkali land improvement liquid spraying device to the designated point, and drive the rotary tillage roller, hoist and conveying assembly; Step 3: Prepare the improvement liquid according to the detected soil data and pass the improvement liquid into the water inlet pipe; Step 4: Use an engineering vehicle to drive the saline-alkali land improvement liquid spraying device to move to the area to be improved; Step 5: During the movement of the improved liquid spraying device, adjust the height of the travel wheel relative to the frame to gradually reduce the inclination angle between the frame and the ground; Step 6: Water the area to be improved, so that the soil layer above 30cm-50cm is saturated and there is water on the surface; Step 7: Allow the area to be improved to dry and repeat the process 2 to 3 times.

[0015] The present invention has the following beneficial effects: The saline-alkali land improving liquid spraying device is provided with a supporting component, a spraying component and a conveying component with a cutter head. When the cutter head rotates with the conveying component to be located at the lower side of the supporting component, the ground can be plowed to loosen the inner soil below the surface layer. At the same time, the improving liquid is sprayed on the surface of the inner soil. When the cutter head rotates with the conveying component to be located at the upper side of the supporting component, the soil on the supporting component can be pushed to fall back onto the ground to cover the surface of the inner soil. At the same time, the improving liquid is covered inside. The improving liquid penetrates into the surface soil during evaporation and will not be directly volatilized into the air, thereby improving the utilization rate of the improving liquid. Under the cover of the surface soil, the improving liquid is protected from direct sunlight, thereby reducing the decomposition of effective substances in the improving liquid, thereby improving the use effect.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view of the internal structure of the frame of the present invention; Figure 3 This is a diagram showing the coordination of the support assembly and the conveying assembly of the present invention; Figure 4 This is a schematic diagram of the support assembly structure of the present invention; Figure 5 It is a schematic diagram of the structure of the conveying assembly of the present invention; Figure 6 This is a schematic diagram of the cooperation between the cutter head, the mounting plate and the sleeve of the present invention; Figure 7 It is a front cross-sectional view of the support assembly and the conveying assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the first annular plate and the first inner support plate of the present invention; Fig. 9 This is a diagram showing the coordination of the first chain and the second chain of the present invention; Fig.10 For the present invention Figure 7 Enlarged schematic diagram of area B in the middle; Fig.11 It is a schematic diagram of the structure of the second annular plate and the second inner support plate of the present invention; Fig.12 This is a diagram showing the position relationship between the push block and the driving column of the present invention; Fig.13 It is a schematic diagram of the block structure of the present invention; Fig.14 For the present invention Figure 4 Enlarged schematic diagram of area A in the middle; Fig.15 It is a schematic diagram of the cooperation between the spray assembly and the support assembly of the present invention; Fig.16 This is a schematic diagram of the installation of the travel wheel of the present invention.

[0018] In the figure, 1, frame; 2, cross beam; 3, traction seat; 4, hoist; 5, rotary roller; 6, reducer; 61, input shaft; 62, output shaft; 7, driving device; 71, first belt; 72, second belt; 73, driving wheel; 8, supporting assembly; 81, first annular plate; 811, overlapping groove; 82, second annular plate; 821, first extension plate; 83, series plate; 831, first pipeline; 832, second pipeline; 84, first inner support plate; 841, restraining groove; 842, docking pipeline; 85, second inner support plate; 851, protruding end; 852, second extension plate; 9, conveying assembly; 91, cutter head; 911, middle plate; 912, plow blade; 92, mounting plate; 93 , flexible belt; 94, support rod; 10, rotating shaft; 101, first guide rod; 11, sleeve; 111, spiral groove; 12, connecting piece; 13, second guide rod; 14, connecting plate; 15, guide wheel; 16, first chain; 161, pushing block; 17, second chain; 171, driving column; 18, water inlet; 19, water inlet pipe; 20, first water distribution pipe; 21, second water distribution pipe; 22, nozzle; 23, walking wheel; 24, side plate; 241, slide groove; 242, rod; 25, cylinder; 26, cross frame; 27, top plate; 29, first drive shaft; 30, second drive shaft; 301, driving wheel; 31, driven shaft; 311, driven wheel; 32, collecting cover; 33, guide rail. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] Refer to the following Figure 1 - Fig.16 , describing the saline-alkali land improvement liquid spraying device and the saline-alkali land soil improvement method provided by the embodiments of the present invention.

[0022] See also Figure 1 - Figure 5 An embodiment of the present invention provides a technical solution: a saline-alkali land improvement liquid spraying device, comprising a frame 1, a traction seat 3 is provided at the front end of the frame 1, the device can be mounted on an engineering vehicle through the traction seat 3, and the frame 1 is sequentially installed with a rotary roller 5, a hoist 4 and a support assembly 8 from front to back along the moving direction.

[0023] While working: The rotary tillage roller 5 rotates to turn over the soil on the surface of the saline-alkali land, and turns the surface soil to the side close to the elevator 4. The rotary tillage roller 5 can be driven by the output device of the engineering vehicle. Specifically, a crossbeam 2 can be set above the rotary tillage roller 5, and a reducer 6 can be installed on the crossbeam 2. The output shaft 62 of the reducer 6 is coaxially arranged with the rotary tillage roller 5 to drive the rotary tillage roller 5. The input shaft 61 of the reducer 6 is connected to the output device. Optionally, an independent output device can be installed on the crossbeam 2 to drive the rotary tillage roller 5.

[0024] The elevator 4 transports the soil from the rotary roller 5 to the support assembly 8. The feed end of the elevator 4 is arranged close to the rotary roller 5, and the discharge end of the elevator 4 is arranged above the support assembly 8, so that the soil can fall directly on the support assembly 8 when leaving the elevator 4.

[0025] In order to improve the lifting effect of the surface soil, a collecting cover 32 can be set between the rotary roller 5 and the supporting assembly 8. The collecting cover 32 is fixed on the frame 1, thereby forming a gathering area between the rotary roller 5 and the collecting cover 32, and the feeding end of the elevator 4 is set in the gathering area.

[0026] In order to achieve a better crushing effect on large pieces of soil, the lifting blades of the lifter 4 can be set to be narrower, so that large pieces of soil can slide off the lifter 4, contact the rotary roller 5 again and be crushed.

[0027] There is a certain distance between the lower surface of the support assembly 8 and the surface of the inner soil, preferably 5cm-10cm, to avoid direct contact between the support assembly 8 and the inner soil. The support assembly 8 includes a first annular plate 81 and a second annular plate 82. The first annular plate 81 and the second annular plate 82 are runway-shaped. The first annular plate 81 and the second annular plate 82 are staggered to ensure that there is a first annular plate 81 on both sides of a second annular plate 82, and a gap is left between adjacent first annular plates 81 and second annular plates 82. The distance of the gap is preferably 2cm to 5cm.

[0028] In addition, it also includes a conveying component 9, which is arranged in the gap. The conveying component 9 rotates around the supporting component 8. The conveying component 9 includes a cutter head 91. When the cutter head 91 rotates with the conveying component 9 to the lower side of the supporting component 8, the cutter head 91 can till the ground, thereby loosening the inner layer of soil below the surface. When the cutter head 91 rotates with the conveying component 9 to the upper side of the supporting component 8, it can push the soil on the supporting component 8 to move to the side away from the rotary roller 5, so that the soil falls back to the ground and covers the surface of the inner layer of soil.

[0029] Furthermore, it also includes a spraying assembly installed on the support assembly 8, the spraying assembly includes a nozzle 22, and the nozzle 22 is arranged on the lower side of the support assembly 8. The nozzle 22 can spray out the improvement liquid. When the surface soil is transported to the upper side of the support assembly 8, the improvement liquid can directly contact with the exposed inner soil. Then, the soil on the support assembly 8 falls again and covers the inner soil, and at the same time covers the improvement liquid to the inside. The improvement liquid penetrates into the surface soil during evaporation and will not evaporate directly into the air, thereby improving the utilization rate of the improvement liquid. Under the cover of the surface soil, the improvement liquid is protected from direct sunlight, reducing the decomposition of effective substances in the improvement liquid, so as to improve the use effect.

[0030] The above-mentioned improvement liquid can be a polyacrylamide dilution to fix soil salt, increase soil water potential, and improve soil aggregate structure, or a chitosan dilution to lower soil pH, promote plant rooting, and improve plant immunity.

[0031] Combination Figure 3 , Figure 5 and Figure 6 The above-mentioned cutter head 91 is composed of a middle plate 911 and a plowing part 912. The middle plate 911 is rectangular, and its length is greater than its width. A plowing part 912 is fixed on both sides of the middle plate 911, and the plowing part 912 can play a plowing role when it contacts the soil.

[0032] When the cutter head 91 is located on the lower side, the line connecting the two plow blade parts 912 is perpendicular to the moving direction of the frame 1. At this time, the cutter head 91 plays a tilling role and can till the inner layer of soil. The distance between adjacent cutter heads 91 is the largest. When the cutter head 91 is located on the upper side of the support assembly 8, the line connecting the two plow blade parts 912 is parallel to the moving direction of the frame 1. At this time, the cutter head 91 plays a pushing role and can push the soil located on the upper side of the support assembly 8. The distance between adjacent cutter heads 91 is the smallest. Multiple cutter heads 91 are combined to form a push plate. At this time, the spacing is preferably 0.3cm-1cm to ensure that adjacent cutter heads 91 will not get stuck when rotating, and at the same time prevent soil from leaking out between the two cutter heads 91.

[0033] Combination Figure 3 and Figure 5The above-mentioned conveying component 9 also includes a mounting plate 92, which is arranged in the gap. The cutter head 91 is installed on the mounting plate 92 through the rotating shaft 10, and the cutter head 91 is fixedly connected to the rotating shaft 10.

[0034] In addition, in order to prevent soil from falling into the gap, a flexible belt 93 is connected between adjacent mounting plates 92. Optionally, the flexible belt 93 is a rubber belt, a nylon belt or a polyester belt, so that when the conveying component 9 is in operation, the flexible belt 93 can prevent soil from falling into the gap and transport the soil located on the gap.

[0035] In addition, if Figure 7 , Fig.10 , Fig.11 and Fig.15 As shown, first extension plates 821 are preferably provided on both sides of the second annular plate 82, and overlapping grooves 811 are provided on both sides of the first annular plate 81, and one end of the flexible belt 93 and the mounting plate 92 is located in the overlapping groove 811. The other end of the flexible belt 93 and the mounting plate 92 is covered by the first extension plate 821 to reduce the soil falling into the support assembly 8.

[0036] Alternatively, if Figure 5 As shown, in order to support the flexible belt 93, a support rod 94 is fixedly provided on the flexible belt 93 along the width direction. One end of the support rod 94 can be inserted into the overlapping groove 811, and the other end can be inserted into the spacing space between the guide rail 33 and the first extension plate 821.

[0037] In addition, a sleeve 11 is fixedly provided on the side of the mounting plate 92 away from the cutter head 91, and a spiral groove 111 is opened on the sleeve 11. A first guide rod 101 is fixedly provided on the rotating shaft 10, and the first guide rod 101 can slide in the spiral groove 111. When the first guide rod 101 slides from one end of the spiral groove 111 to the other end, the rotating shaft 10 rotates 90°, thereby causing the cutter head 91 to rotate 90°.

[0038] Combination Figure 6 - Figure 8 In order to drive the rotating shaft 10 to move in the vertical direction, a connecting member 12 is provided at the end of the rotating shaft 10 away from the cutter head 91, and the connecting member 12 is rotatably connected to the rotating shaft 10. A second guide rod 13 is fixedly provided on one side of the rotating shaft 10, and the axis of the second guide rod 13 is parallel to the horizontal plane. Preferably, the second guide rod 13 extends toward the side close to the nearest first annular plate 81.

[0039] In addition, a first inner support plate 84 is fixedly disposed in the first annular plate 81, and restraining grooves 841 (such as Figure 7As shown, the first inner support plate 84 located on both sides of the edge of the support assembly 8 can have a constraint groove 841 on one side), and the second guide rod 13 can slide in the constraint groove 841, and the vertical distance between the side of the constraint groove 841 close to the upper end of the first annular plate 81 and the axis of the first annular plate 81 is smaller than the side of the constraint groove 841 close to the lower end of the first annular plate 81, so that when the second guide rod 13 moves to the upper side of the first annular plate 81 along the constraint groove 841, the second guide rod 13 moves toward the end away from the mounting plate 92, thereby driving the cutter head 91 to move and rotate toward the side close to the mounting plate 92, so that the plurality of cutter heads 91 are combined to form a push plate to push the soil located on the support assembly 8 to move backward, and when the second guide rod 13 moves to the lower side of the first annular plate 81 along the constraint groove 841, the second guide rod 13 moves to the end close to the mounting plate 92, thereby pushing the cutter head 91 to move and rotate toward the side away from the mounting plate 92, and at this time the cutter head 91 can be inserted into the inner layer of soil and play a tillage role.

[0040] Combination Figure 6 and Fig.10 In order to drive the conveying assembly 9 to rotate along the supporting assembly 8, a connecting plate 14 is fixedly provided on one side of the mounting plate 92, and a guide wheel 15 is fixedly provided on the side of the connecting plate 14 away from the mounting plate 92. Two guide wheels 15 are provided, and the two guide wheels 15 are arranged vertically with a certain distance between them.

[0041] In addition, guide rails 33 are fixedly provided on both sides of the second annular plate 82 , and the guide wheels 15 move along the guide rails 33 . The two guide wheels 15 are located on both sides of the guide rails 33 , and the guide wheels 15 are supported by the guide rails 33 , and at the same time play a role in constraining the moving path of the guide wheels 15 .

[0042] In addition, combined Fig.11 A second inner support plate 85 is fixedly provided in the second annular plate 82, and second extension plates 852 are provided on both sides of the second inner support plate 85. A gap is formed between the outer wall of the second extension plate 852 and the inner wall of the second annular plate 82. Both ends of the second inner support plate 85 are provided with protruding ends 851, and the protruding ends 851 are fixedly connected to the second annular plate 82. A second chain 17 is provided in the gap, and the gap supports the second chain 17. One side of the second chain 17 is fixedly connected to the connecting plate 14, and the second chain 17 is arranged around the supporting assembly 8, so that when the second chain 17 moves, it can drive the conveying assembly 9 to rotate.

[0043] Combination Figure 7 , Fig. 9 , Fig.11 , Fig.12 and Fig.13 In order to leave enough space inside the supporting assembly 8 to facilitate the movement of the second guide rod 13 , a driving column 171 is fixedly provided on the side of the second chain 17 away from the connecting plate 14 .

[0044] In addition, a first chain 16 is provided on one side of the second chain 17, the first chain 16 is arranged parallel to the second chain 17, and both ends of the first chain 16 are located outside the support assembly 8, and a push block 161 is fixedly provided on one side of the first chain 16 close to the second chain 17, and one side of the push block 161 is an open end. When the first chain 16 moves toward the open end, the push block 161 pushes the driving column 171 to move the second chain 17. Specifically, taking one end of the first chain 16 as an example, when the first chain 16 rotates, the first chain 16 is located at the The pushing block 161 on the lower side of the first chain 16 is separated from the driving column 171, and the pushing block 161 on the upper side of the first chain 16 is combined with the driving column 171, so that the pushing block 161 and the driving column 171 are in a combined state in the overlapping portion of the first chain 16 and the second chain 17. Preferably, one first chain 16 drives two second chains 17, that is, the pushing blocks 161 are fixed on both sides of the first chain 16, and the second chains 17 are symmetrically arranged on both sides of the first chain 16 to reduce the number of first chains 16 used.

[0045] Combination Fig.12 and Fig.13 Preferably, a protrusion is provided on one side of the open end of the pushing block 161, so that the pushing block 161 located on the upper side of the supporting assembly 8 can be supported by the driving column 171 to improve the stability of the first chain 16 during movement.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, in order to facilitate driving the first chain 16 to rotate, a second driving shaft 30 is installed at the end of the frame 1 close to the rotary roller 5, and a plurality of driving wheels 301 are provided on the second driving shaft 30 to correspond to the number of the first chain 16. A driven shaft 31 is installed at the end of the frame 1 away from the rotary roller 5, and a driven wheel 311 is provided on the driven shaft 31. The two ends of the driving device 7 of the first chain 16 are respectively engaged with the driving wheel 301 and the driven wheel 311.

[0047] In addition, a top plate 27 is provided on the frame 1 , a driving device 7 is mounted on the top plate 27 , a driving wheel 73 is fixedly provided at the output end, and the driving wheel 73 drives the second driving shaft 30 to rotate through a second belt 72 .

[0048] In addition, combined Figure 2 In order to facilitate driving the elevator 4 to move, a first driving shaft 29 is provided at one end of the elevator 4, and the driving wheel 73 drives the first driving shaft 29 to rotate through the first belt 71.

[0049] Combination Figure 4 and Fig.15In order to fix the first annular plate 81 and the second annular plate 82 which are spaced apart from each other to the frame 1, a series plate 83 is provided inside the support assembly 8, the first inner support plate 84 and the second inner support plate 85 are both fixedly connected to the series plate 83, and both ends of the series plate 83 are fixedly connected to the frame 1.

[0050] Combination Figure 3 , Figure 4 , Fig.14 and Fig.15 In order to facilitate the supply of liquid to the nozzle 22, a first pipe 831 is opened in the series plate 83 along the horizontal direction, and a second pipe 832 is opened in the series plate 83 along the vertical direction. The first pipe 831 is connected to the second pipe 832, and a docking pipe 842 is opened in the first inner support plate 84, and the docking pipe 842 is connected to the first pipe 831.

[0051] In addition, a water inlet pipe 19 is installed on the frame 1, and a water inlet 18 is provided at one end of the water inlet pipe 19. The water inlet pipe 19 is used to introduce the improved liquid. A first water distribution pipe 20 is provided in the first pipeline 831, and a second water distribution pipe 21 is provided in the docking pipeline 842. One side of the second water distribution pipe 21 passes through the second pipeline 832 and is connected with the first water distribution pipe 20. A nozzle 22 is fixedly provided on the lower side of the first annular plate 81, and the other end of the second water distribution pipe 21 is connected with the nozzle 22.

[0052] Combination Figure 1 and Fig.16 In order to facilitate the use of the device, a walking wheel 23 is provided at the end of the frame 1 away from the rotary tillage roller 5. The walking wheel 23 can move in the vertical direction to adjust the inclination angle of the frame 1 and the ground. Specifically, a cross frame 26 is rotatably provided on the side of the walking wheel 23 close to the frame 1, and a side plate 24 is fixed on the frame 1. A slide groove 241 is opened on the side of the side plate 24 close to the walking wheel 23. A rod 242 is provided in the vertical direction in the slide groove 241, and a cylinder 25 is installed on the side plate 24. The cylinder 25 is vertically arranged, and the telescopic rod of the cylinder 25 is fixedly connected to the cross frame 26, so that the cylinder 25 adjusts the relative height of the walking wheel 23 and the frame 1.

[0053] When the device is located in the area to be improved, the telescopic rod of the cylinder 25 extends outward, thereby increasing the inclination angle of the frame 1 to facilitate the rotary roller 5 to plow the ground. Then, as the device moves, the telescopic rod of the cylinder 25 is slowly retracted to reduce the inclination angle of the frame 1 to facilitate the blade head 91 to penetrate into the soil, thereby avoiding that the multiple blade heads 91 are subjected to a large reaction force when the device is directly working.

[0054] When in use (working), the rotary tillage roller 5 tills the surface soil and draws the soil toward the elevator 4, which transports the surface soil to the support assembly 8. When the conveying assembly 9 is working, the cutter head 91 rotates with the conveying assembly 9. When the cutter head 91 rotates with the conveying assembly 9 to the lower side of the support assembly 8, the cutter head 91 can till the ground, thereby loosening the inner soil below the surface. When the cutter head 91 rotates with the conveying assembly 9 to the upper side of the support assembly 8, it can push the soil on the support assembly 8 to move away from the rotary tillage roller 5. The spraying assembly can spray out the improvement liquid. When the surface soil is transported to the upper side of the support assembly 8, the improvement liquid can directly contact the exposed inner soil. Then, the soil on the support assembly 8 falls again and covers the inner soil, and at the same time covers the improvement liquid inside.

[0055] The present invention also provides a saline-alkali land soil improvement method, which is applicable to a saline-alkali land improvement liquid spraying device, and comprises the following steps: Step 1: Fixed-point detection of soil total salt content, soil pH value, soil organic matter, and soil nutrient status; Step 2: Drag the saline-alkali land improvement liquid spraying device to the designated point by an engineering vehicle, and drive the rotary tillage roller 5, the hoist 4 and the conveying assembly 9; Step 3: Prepare the improved liquid according to the detected soil data, and pass the improved liquid into the water inlet pipe 19; Step 4: Use an engineering vehicle to drive the saline-alkali land improvement liquid spraying device to move to the area to be improved; Step 5: During the movement of the improved liquid spraying device, the height of the traveling wheel 23 relative to the frame 1 is adjusted to gradually reduce the inclination angle between the frame 1 and the ground; Step 6: Water the area to be improved, so that the soil layer above 30cm-50cm is saturated and there is water on the surface; Step 7: Allow the area to be improved to dry and repeat the process 2 to 3 times.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A saline-alkali land improvement liquid spraying device, comprising a frame (1), characterized in that: The frame (1) is provided with a rotary tillage roller (5), a hoist (4) and a support assembly (8) in sequence from front to back along the moving direction, wherein: The rotary tillage roller (5) turns the surface soil toward the side close to the elevator (4); The elevator (4) transports the soil at the rotary tillage roller (5) to the support assembly (8); The support assembly (8) comprises a first annular plate (81) and a second annular plate (82), wherein the first annular plate (81) and the second annular plate (82) are arranged alternately, and a gap is left between adjacent first annular plates (81) and second annular plates (82); Also includes: a conveying assembly (9), the conveying assembly (9) being arranged in the gap, the conveying assembly (9) rotating around the supporting assembly (8), the conveying assembly (9) comprising a cutter head (91), the cutter head (91) tilling the ground when located at the lower side of the supporting assembly (8), and the cutter head (91) pushing the soil on the supporting assembly (8) to move to a side away from the rotary tilling roller (5) when located at the upper side of the supporting assembly (8); A spray assembly, the spray assembly being mounted on a support assembly (8), the spray assembly comprising a spray head (22), the spray head (22) being arranged on the lower side of the support assembly (8).

2. A saline-alkali land improvement liquid spraying device according to claim 1, characterized in that: The cutter head (91) is composed of a middle plate (911) and a plowshare portion (912), and a plowshare portion (912) is fixedly provided on both sides of the middle plate (911); When the cutter head (91) is located at the lower side of the support assembly (8), the line connecting the two plow blade parts (912) is perpendicular to the moving direction of the frame (1), and the distance between adjacent cutter heads (91) is the largest; when the cutter head (91) is located at the upper side of the support assembly (8), the line connecting the two plow blade parts (912) is parallel to the moving direction of the frame (1), and the distance between adjacent cutter heads (91) is the smallest.

3. A saline-alkali land improvement liquid spraying device according to claim 2, characterized in that: The conveying assembly (9) further comprises: a mounting plate (92), the mounting plate (92) being arranged in the gap, the cutter head (91) being mounted on the mounting plate (92) via a rotating shaft (10), and the cutter head (91) being fixedly connected to the rotating shaft (10); A flexible belt (93), the flexible belt (93) being connected between adjacent mounting plates (92), the flexible belt (93) being used to transport soil located on the gap; A sleeve (11) is fixedly provided on a side of the mounting plate (92) away from the cutter head (91), and a spiral groove (111) is provided on the sleeve (11); A first guide rod (101) is fixedly provided on the rotating shaft (10), and the first guide rod (101) is capable of sliding in the spiral groove (111) to enable the rotating shaft (10) to rotate.

4. A saline-alkali land improvement liquid spraying device according to claim 3, characterized in that: A connecting piece (12) is provided at one end of the rotating shaft (10) away from the cutter head (91), and the connecting piece (12) is rotatably connected to the rotating shaft (10); A second guide rod (13) is fixedly provided on one side of the rotating shaft (10), and the axis of the second guide rod (13) is parallel to a horizontal plane; A first inner support plate (84) is fixedly disposed in the first annular plate (81), and restraining grooves (841) are provided on both sides of the first inner support plate (84), and the second guide rod (13) is capable of sliding in the restraining grooves (841); The vertical distance between the side of the constraint groove (841) close to the upper end of the first annular plate (81) and the axis of the first annular plate (81) is smaller than the vertical distance between the side of the constraint groove (841) close to the lower end of the first annular plate (81).

5. The saline-alkali land improvement liquid spraying device according to claim 4, characterized in that: A connecting plate (14) is fixedly provided on one side of the mounting plate (92), and a guide wheel (15) is fixedly provided on a side of the connecting plate (14) away from the mounting plate (92); Guide rails (33) are fixedly provided on both sides of the second annular plate (82), the guide wheel (15) moves along the guide rails (33), and the guide wheel (15) is supported by the guide rails (33); A second inner support plate (85) is fixedly provided inside the second annular plate (82), and second extension plates (852) are provided on both sides of the second inner support plate (85), and a gap is formed between the outer wall of the second extension plate (852) and the inner wall of the second annular plate (82); A second chain (17) is provided in the gap, and one side of the second chain (17) is fixedly connected to the connecting plate (14).

6. A saline-alkali land improvement liquid spraying device according to claim 5, characterized in that: A driving column (171) is fixedly provided on a side of the second chain (17) away from the connecting plate (14); A first chain (16) is provided on one side of the second chain (17), the first chain (16) is arranged parallel to the second chain (17), and both ends of the first chain (16) are located outside the support assembly (8); A pushing block (161) is fixedly provided on one side of the first chain (16) close to the second chain (17); one side of the pushing block (161) is an open end; when the first chain (16) moves toward the open end, the pushing block (161) pushes the driving column (171) to move the second chain (17).

7. The saline-alkali land improvement liquid spraying device according to claim 5, characterized in that: A series connection plate (83) is provided inside the support assembly (8), and the first inner support plate (84) and the second inner support plate (85) are both fixedly connected to the series connection plate (83); Both ends of the series connection plate (83) are fixedly connected to the frame (1).

8. The saline-alkali land improvement liquid spraying device according to claim 7, characterized in that: A first pipe (831) is provided in the series connection plate (83) in a horizontal direction, and a second pipe (832) is provided in the series connection plate (83) in a vertical direction, wherein the first pipe (831) is in communication with the second pipe (832); A docking pipe (842) is provided in the first inner support plate (84), and the docking pipe (842) is in communication with the first pipe (831); The spray assembly also includes: A water inlet pipe (19), the water inlet pipe (19) being mounted on the frame (1), and the water inlet pipe (19) being used to introduce the reforming liquid; A first water distribution pipe (20), the first water distribution pipe (20) being arranged in the first pipeline (831), the first water distribution pipe (20) being in communication with the water inlet pipe (19); A second water distribution pipe (21); the second water distribution pipe (21) is arranged in the docking pipe (842), and one side of the second water distribution pipe (21) passes through the second pipe (832) and is connected to the first water distribution pipe (20); The spray head (22) is installed on the lower side of the first annular plate (81), and the spray head (22) is connected to the second water distribution pipe (21).

9. The saline-alkali land improvement liquid spraying device according to claim 1, characterized in that: A running wheel (23) is provided at one end of the frame (1) away from the rotary tillage roller (5); the running wheel (23) is capable of moving in a vertical direction to adjust the inclination angle between the frame (1) and the ground.

10. A method for improving saline-alkali soil, applicable to the saline-alkali soil improving liquid spraying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Fixed-point detection of soil total salt content, soil pH value, soil organic matter, and soil nutrient status; Step 2: Use an engineering vehicle to drag the saline-alkali land improvement liquid spraying device to a designated point, and drive the rotary tillage roller (5), the elevator (4) and the conveying assembly (9); Step 3: Prepare the improved liquid according to the detected soil data, and pass the improved liquid into the water inlet pipe (19); Step 4: Use an engineering vehicle to drive the saline-alkali land improvement liquid spraying device to move to the area to be improved; Step 5: During the movement of the improved liquid spraying device, the height of the running wheel (23) relative to the frame (1) is adjusted to gradually reduce the inclination angle between the frame (1) and the ground; Step 6: Water the area to be improved, so that the soil layer above 30cm-50cm is saturated and there is water on the surface; Step 7: Allow the area to be improved to dry and repeat the process 2 to 3 times.

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