Spraying device for saline-alkali soil remediation

Abstract

The invention relates to the technical field of soil remediation, in particular to a spraying device for saline-alkali soil remediation, which comprises a mounting shell and a plurality of ditching blocks, a rotary tillage roller is mounted in the mounting shell, a jacking block is fixed at one end of each ditching block, and the other end of each ditching block is fixedly connected with the mounting shell through a connecting rod; the cross section of the ditching block is trapezoidal; the mounting groove is formed in the side wall of the ditching block; the slotting plate is slidably connected to the interior of the mounting groove, and a first electric push rod is fixed between the slotting plate and the inner wall of the mounting groove; according to the saline-alkali soil remediation device, firstly, saline-alkali soil is turned over and crushed through the rotary tillage roller, then a plurality of deep ditches are formed, deep soil is exposed, finally, remediation liquid is sprayed, the remediation liquid can make direct contact with the deep soil, and the deep soil is rapidly remedied.

Description

Technical Field

[0001] The invention relates to the field of soil remediation, and in particular to a spraying device for remediating saline-alkali land soil. Background Art

[0002] According to the existing technology, saline-alkali land contains a large amount of soluble salts, such as sodium salts, which will change the charge properties of the surface of soil particles, resulting in a decrease in the repulsive force between soil particles, and then agglomerate together to form larger clods, making the soil compact and hardened, and the air permeability and water permeability of the soil deteriorate. Conventional spraying devices make it difficult for the repair liquid to quickly penetrate into the soil after spraying it, which in turn affects the soil improvement effect.

[0003] Although the prior art has a spraying device that combines tillage and spraying, most of the repair liquid is sprayed directly on the surface of the soil after tillage. The repair liquid is concentrated in the soil surface. It is difficult to quickly repair the deep soil by adopting a single vertical infiltration. In addition, some components in the repair liquid are volatile. If they cannot quickly penetrate into the soil layer, their volatilization will not only reduce the content of effective ingredients in the repair liquid and affect the repair effect, but may also cause certain pollution to the surrounding environment. On the other hand, the repair liquid usually contains certain nutrients, such as nitrogen, phosphorus, potassium, etc. During the initial repair, these nutrients have reached a certain equilibrium state in the soil. If the initial repair is difficult to penetrate into the deep soil, plowing and spraying will be carried out again. The partially repaired soil will be exposed to the repair liquid for the second time, which may lead to excessive accumulation of nutrients in the soil, resulting in soil nutrient imbalance, and further affecting the normal growth of subsequent plants. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the seepage path of the sprayed repair liquid is difficult to control, resulting in poor repair effect of deep soil, and a spraying device for saline-alkali land soil repair is proposed.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a spraying device for saline-alkali soil remediation, comprising a mounting shell, a rotary tillage roller is installed inside the mounting shell, and further comprising:

[0006] A spray assembly, the spray assembly comprising a water tank and a water pipe, the water tank being fixed on the top surface of the mounting shell, the water pipe being fixed on the inner wall of the mounting shell, the water pipe being fixedly connected to the water tank, and a plurality of spray heads being fixed on the surface of the water pipe;

[0007] A trenching block, wherein the trenching block has a plurality of members, one end of the trenching block is fixed with a push block, the other end of the trenching block is fixedly connected to the mounting shell via a connecting rod, and the cross section of the trenching block is trapezoidal;

[0008] An installation groove is provided on the side wall of the ditch-opening block;

[0009] A grooving plate is slidably connected inside the installation groove, and a first electric push rod is fixed between the grooving plate and the inner wall of the installation groove.

[0010] Preferably, a groove is provided on the side wall of the ditch-opening block, an extrusion plate is inserted inside the groove, a second electric push rod is fixed between the extrusion plate and the inner wall of the groove, a plurality of liquid outlet holes are provided on the surface of the extrusion plate, a liquid storage cavity is provided inside the ditch-opening block, the liquid storage cavity is communicated with a water tank through a pipeline, and a wetting assembly is arranged between the liquid storage cavity and the liquid outlet holes. The wetting assembly is used to extrude the repair liquid to the outside of the liquid outlet holes when the extrusion plate retracts.

[0011] Preferably, the wetting assembly includes a telescopic cylinder, which is composed of a fixed pipe and a movable pipe. The movable pipe is slidably inserted inside the fixed pipe. The fixed pipe is fixed on the inner wall of the groove. The inside of the fixed pipe is communicated with the inside of the liquid storage cavity. The end of the movable pipe is fixed inside the liquid outlet hole. A one-way valve is fixed inside the fixed pipe, and a regulating valve is fixed inside the movable pipe. The regulating valve is used to close the pipe orifice of the movable pipe when the telescopic cylinder extends, and to open the pipe orifice of the movable pipe when the telescopic cylinder shortens.

[0012] Preferably, the regulating valve includes a cylinder body inserted inside the movable pipe. A limiting ring is sleeved and fixed on the outer wall of one end of the cylinder body close to the fixed pipe. A positioning ring is slidably sleeved on the outside of the cylinder body. A first spring is fixed between the positioning ring and the limiting ring. The positioning ring is fixed on the inner wall of the movable pipe. An adjusting cavity is provided inside the cylinder body. A liquid inlet hole is provided at one end of the adjusting cavity close to the fixed pipe. A sealing block is inserted inside the liquid inlet hole. A sliding rod is fixed on the surface of the sealing block. A sliding frame is fixed at the end of the sliding rod. A second spring is fixed between the sliding frame and the inner wall of the adjusting cavity. A sliding block is slidably connected to the surface of the sliding frame. An outlet pipe is fixed on the surface of the sliding block. A sliding through groove is provided on the outer wall of the cylinder body. The outlet pipe is slidably inserted inside the sliding through groove. A through hole is provided on the surface of the outlet pipe close to the sliding block.

[0013] Preferably, a slot is provided at the end of the cylinder body, a spiked block is inserted inside the slot, and a third spring is fixed between the spiked block and the slot.

[0014] Preferably, a sealing airbag is embedded and fixed on the side wall of the cylinder body, the sealing airbag contacts the inner wall of the movable pipe, and the sealing airbag is communicated with the inside of the slot through a pipeline.

[0015] Preferably, the slotted plate includes a first transverse plate, an inclined plate and a second transverse plate, the first transverse plate is arranged below the second transverse plate, the inclined plate is arranged between the first transverse plate and the second transverse plate, one end of the inclined plate is fixed to the first transverse plate, and the other end of the inclined plate is fixed to the second transverse plate.

[0016] Preferably, a clearance groove is provided at the bottom of the first horizontal plate, a sliding plate is vertically slidably connected in the clearance groove, a plurality of rake nails are fixed on the bottom surface of the sliding plate, a circular hole is provided on the surface of the sliding plate, a T-shaped column is inserted into the circular hole, the top of the T-shaped column is fixed on the inner wall of the clearance groove, a fourth spring is fixed between the T-shaped column and the sliding plate, and a pushing assembly is provided at one end of the first horizontal plate, and the pushing assembly is used to push the sliding plate to reset when the slotted plate is reset.

[0017] Preferably, the pushing assembly includes a first strip groove and a second strip groove, the first strip groove is opened at the bottom of the first horizontal plate, the second strip groove is opened on the inner wall of the give way groove, the first strip groove and the second strip groove are connected, a pushing pin is inserted into the interior of the second strip groove, both sides of the pushing pin have guide surfaces, a pushing rod is inserted into the interior of the first strip groove, an inclined surface is opened on the bottom surface of the pushing rod, an extension plate is fixed to the top of the pushing rod, a sixth spring is fixed between the extension plate and the inner wall of the second strip groove, and the extension plate is in contact with the guide surface of the pushing pin.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention firstly plows and breaks the saline-alkali soil by a rotary tillage roller, then opens a plurality of deep trenches to expose the deep soil, and finally sprays a repair liquid so that the repair liquid can directly contact the deep soil to quickly repair the deep soil. An earth dam structure is formed between the deep trenches. The earth dam and the deep trenches form a three-dimensional structure with alternating concave and convex shapes, which significantly expands the contact area between the repair liquid and the soil, and enables the repair liquid to more fully react with soil particles at different depths, thereby better promoting the penetration effect and greatly improving the repair efficiency.

[0020] 2. The present invention opens a transverse groove on the side of the earth-fill dam to partially cut off the vertical seepage in the high-activity repair area on the surface of the earth-fill dam, forming a transverse seepage channel, intercepting the repair fluid that may originally infiltrate rapidly and directing it to flow horizontally, adjusting the seepage path, reducing the proportion of deep vertical seepage, thereby quickly repairing the soil inside the dam body and further improving the repair efficiency.

[0021] III. By improving the grooved plate, during the process of opening the transverse groove, the top of the groove is compacted to form a dense area, which can ensure the truncation effect of the transverse groove on vertical seepage, enabling the repair fluid above the transverse groove to mainly permeate horizontally, thus quickly seeping horizontally and repairing the soil inside the dam body, improving the repair efficiency. Meanwhile, a loose area is formed at the bottom of the groove to promote the downward seepage of the liquid in the groove, avoiding the accumulation of liquid in the groove, and further facilitating the maintenance of the stability of the transverse groove, preventing the collapse of the groove body, and further ensuring the truncation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 .

[0023] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 .

[0024] Figure 3 is a schematic diagram of the structures of the trench-opening block, the jacking block, and the grooved plate of the present invention.

[0025] Figure 4 is a schematic diagram of the sectional structure of the trench-opening block and the grooved plate of the present invention.

[0026] Figure 5 is a schematic diagram of the sectional structure of the trench-opening block and the telescopic cylinder of the present invention.

[0027] Figure 6 is of the present invention Figure 5 schematic enlarged structure diagram at A therein.

[0028] Figure 7 is a schematic diagram of the structure of the cylinder of the present invention.

[0029] Figure 8 is a schematic diagram of the grooved plate of the present invention.

[0030] Figure 9 is a schematic diagram of the sectional structure of the first transverse plate of the present invention.

[0031] Figure 10 is of the present invention Figure 9 schematic enlarged structure diagram at B therein.

[0032] In the figure: 1. Installation shell; 2. Rotary tillage roller; 3. Water tank; 4. Water delivery pipe; 5. Sprinkler head; 6. Ditching block; 7. Pushing block; 8. Connecting rod; 9. Installation groove; 10. Grooving plate; 11. First electric push rod; 12. Groove; 13. Extrusion plate; 14. Second electric push rod; 15. Liquid outlet hole; 16. Liquid storage cavity; 17. Telescopic cylinder; 18. Fixed pipe; 19. Movable pipe; 20. Check valve; 21. Cylinder body; 22. Limit ring; 23. Positioning ring; 24. First spring; 25. Adjusting cavity; 26. Liquid inlet hole; 27. Sealing block; 28. Slide bar; 29. Sliding frame; 30. Second spring; 31. Slide block; 32. Liquid outlet pipe; 33. Sliding through groove; 34. Through hole; 35. Slot; 36. Spiked block; 37. Third spring; 38. Sealing airbag; 39. First cross plate; 40. Inclined plate; 41. Second cross plate; 42. Relief groove; 43. Sliding plate; 44. Harrow nail; 45. Round hole; 46. T-shaped column; 47. Fourth spring; 48. First strip-shaped groove; 49. Second strip-shaped groove; 50. Pushing pin; 51. Pushing rod; 52. Extension plate; 53. Sixth spring. Detailed implementation mode

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and other obvious variations can be thought of by those skilled in the art.

[0034] As Figures 1 to 10 shown, a spraying device for saline-alkali soil remediation includes an installation shell 1, a rotary tillage roller 2 is installed inside the installation shell 1, and further includes:

[0035] A spraying assembly, the spraying assembly includes a water tank 3 and a water delivery pipe 4. The water tank 3 is fixed on the top surface of the installation shell 1, the water delivery pipe 4 is fixed on the inner wall of the installation shell 1, the water delivery pipe 4 is fixedly communicated with the water tank 3, and a plurality of sprinkler heads 5 are fixed on the surface of the water delivery pipe 4;

[0036] Ditching blocks 6, there are a plurality of ditching blocks 6, a pushing block 7 is fixed at one end of the ditching block 6, the other end of the ditching block 6 is fixedly connected with the installation shell 1 through a connecting rod 8, and the cross section of the ditching block 6 is trapezoidal;

[0037] An installation groove 9 is opened on the side wall of the ditching block 6;

[0038] A grooving plate 10 is slidably connected inside the installation groove 9, and a first electric push rod 11 is fixed between the grooving plate 10 and the inner wall of the installation groove 9.

[0039] Specifically, during use, first install the installation shell 1 at the rear end of agricultural machinery such as tractors and loaders, and connect the rotary tillage roller 2 to the rear power output shaft of the agricultural machinery through a universal joint drive shaft. Thus, the rotary tillage roller 2 is driven to rotate by the engine of the agricultural machinery. By rotating the rotary tillage roller 2, the saline-alkali soil can be plowed and broken. This is the prior art and will not be elaborated here. Different from the prior art, in the present invention, a plurality of ditching blocks 6 are arranged at the rear side of the rotary tillage roller 2. The ditching blocks 6 are inserted into the plowed soil and move in the soil, thereby opening a plurality of deep grooves. Not only does it expose the deep soil, but when the nozzle 5 of the spraying assembly sucks the water flow in the water tank 2 to spray the repair liquid later, it can ensure that the repair liquid can directly contact the deep soil and quickly repair the deep soil. It also forms a soil dam structure between each deep groove. The soil dam and the deep groove form a three-dimensional structure with alternating convex and concave shapes, significantly expanding the contact area between the repair liquid and the soil, enabling the repair liquid to react more fully with soil particles at different depths, thereby better promoting the penetration effect and greatly improving the repair efficiency;

[0040] Furthermore, although traditional ditching equipment can perform ditching operations on saline-alkali land, if the formed soil dam is relatively high or thick, after the repair liquid contacts the dam body, it is likely to quickly infiltrate vertically along the surface layer of the soil dam under the action of gravity, resulting in the deep soil inside the dam body still being difficult to quickly repair. To solve the above problems, in the present invention, the first electric push rod 11 is used to push the grooving plate 10 into the inside of the soil dam, and as the ditching block 6 moves, a transverse groove is opened on the side of the soil dam. To maintain the stability of the transverse groove and the soil dam, although the transverse groove does not penetrate the entire dam body, it can still partially intercept the vertical infiltration in the high-activity repair area on the surface layer of the soil dam, forming a transverse seepage channel, intercepting the repair liquid that might quickly infiltrate vertically and making it flow horizontally, reducing the proportion of deep vertical seepage, thereby quickly repairing the soil inside the dam body and further improving the repair efficiency.

[0041] As a further implementation scheme of the present invention, a groove 12 is opened on the side wall of the ditching block 6, and an extrusion plate 13 is inserted into the inside of the groove 12. A second electric push rod 14 is fixed between the extrusion plate 13 and the inner wall of the groove 12. A plurality of liquid outlet holes 15 are opened on the surface of the extrusion plate 13. The inside of the ditching block 6 has a liquid storage cavity 16. The liquid storage cavity 16 is connected to the water tank 3 through a pipeline. A wetting assembly is arranged between the liquid storage cavity 16 and the liquid outlet holes 15. The wetting assembly is used to extrude the repair liquid to the outside of the liquid outlet holes 15 when the extrusion plate 13 retracts.

[0042] Specifically, the salt and alkali content in the soil of some saline-alkali land is relatively high, resulting in the easy loosening of the soil berm after trenching. To prevent the soil berm from loosening and collapsing, which may affect the subsequent transverse groove opening and spraying effects, the present invention is provided with extrusion plates 13 on both sides of the trenching block 6. During trenching, the second electric push rod 14 is activated to intermittently push the extrusion plates 13 to extrude the soil berm. The extrusion plates 13 reciprocally extend and retract to produce a vibrating extrusion effect, compacting the surface soil of the soil berm, making the soil structure more stable, reducing the risk of collapse, and avoiding the collapse of the subsequent transverse groove opening due to soil loosening, which may affect the blocking effect on vertical seepage. Further, the side walls of the soil berm are wetted by the wetting assembly to strengthen the cohesion between the soils on the soil berm, thereby further preventing the trench from loosening and collapsing. Moreover, the repair fluid is sprayed immediately after extrusion. Taking advantage of the short-term relaxation state of the soil particles after extrusion, the repair fluid can more easily fill the voids generated by extrusion, improving the contact efficiency with the deep soil.

[0043] As a further embodiment of the present invention, the wetting assembly includes a telescopic cylinder 17, which is composed of a fixed pipe 18 and a movable pipe 19. The movable pipe 19 is slidably inserted into the interior of the fixed pipe 18. The fixed pipe 18 is fixed on the inner wall of the groove 12. The interior of the fixed pipe 18 is in communication with the interior of the liquid storage cavity 16. The end of the movable pipe 19 is fixed inside the liquid outlet hole 15. A one-way valve 20 is fixed inside the fixed pipe 18, and a regulating valve is fixed inside the movable pipe 19. The regulating valve is used to close the orifice of the movable pipe 19 when the telescopic cylinder 17 extends, and to open the orifice of the movable pipe 19 when the telescopic cylinder 17 shortens.

[0044] Specifically, when the extrusion plate 13 approaches the soil berm, the telescopic cylinder 17 is in an extended state, and the movable pipe 19 moves outward from the fixed pipe 18. The internal space of the telescopic cylinder 17 gradually increases, generating negative pressure, thereby sucking the liquid inside the liquid storage cavity 16. At this time, the regulating valve is in a closed state, thus avoiding the situation where the soil blocks the regulating valve during the extrusion process. When the extrusion plate 13 moves away from the soil berm, the telescopic cylinder 17 shortens, and the movable pipe 19 moves into the interior of the fixed pipe 18. The internal space of the telescopic cylinder 17 gradually decreases. At this time, the regulating valve is in an open state, and the one-way valve 20 can restrict the backflow of water into the liquid storage cavity 16. Therefore, as the telescopic cylinder 17 shortens, the water inside the telescopic cylinder 17 can be extruded from the position of the regulating valve and sprayed into the space between the extrusion plate 13 and the soil berm, wetting the soil berm and the extrusion plate 13. On the one hand, through the combination of wetting and extrusion, it is beneficial to ensure the cohesion of the soil on the surface of the soil berm and the stability of the subsequent transverse groove opening. On the other hand, the sprayed liquid is the repair fluid, which, combined with the extrusion effect, can promote the repair fluid to enter the deep soil and accelerate the repair rate.

[0045] As a further embodiment of the present invention, the regulating valve includes a cylinder body 21, the cylinder body 21 is inserted inside the movable pipe 19, a limiting ring 22 is sleeved and fixed on the outer wall of one end of the cylinder body 21 close to the fixed pipe 18, a positioning ring 23 is slidably sleeved outside the cylinder body 21, a first spring 24 is fixed between the positioning ring 23 and the limiting ring 22, the positioning ring 23 is fixed on the inner wall of the movable pipe 19, an adjusting cavity 25 is provided inside the cylinder body 21, a liquid inlet hole 26 is opened at one end of the adjusting cavity 25 close to the fixed pipe 18, a sealing block 27 is inserted in the liquid inlet hole 26, a sliding rod 28 is fixed on the surface of the sealing block 27, a sliding frame 29 is fixed at the end of the sliding rod 28, a second spring 30 is fixed between the sliding frame 29 and the inner wall of the adjusting cavity 25, a slider 31 is slidably connected to the surface of the sliding frame 29, a liquid outlet pipe 32 is fixed on the surface of the slider 31, a sliding through groove 33 is opened on the outer wall of the cylinder body 21, the liquid outlet pipe 32 is slidably inserted inside the sliding through groove 33, and a through hole 34 is opened at one end of the surface of the liquid outlet pipe 32 close to the slider 31.

[0046] Specifically, the openings of traditional valve bodies are all provided at the ends. If directly applied to the extrusion plate 13, during the process of extruding the soil, the valve openings are prone to blockage. To avoid the blockage of the valve openings, the present invention improves the regulating valve. When the telescopic cylinder 17 shortens, the internal space of the telescopic cylinder 17 decreases. Under the hydraulic action, the cylinder body 21 can be first pushed outwards, overcoming the elastic force of the first spring 24, so that the end of the cylinder body 21 extends out of the movable pipe 19, and the nozzle of the liquid outlet pipe 32 is communicated with the outside. As the hydraulic pressure inside the telescopic cylinder 17 continues to increase, under the hydraulic action, the elastic force of the second spring 30 can be overcome, and the sealing block 27 is pushed towards the inside of the adjusting cavity 25 to open the liquid inlet hole 26. The repair liquid enters the adjusting cavity 25 from the position of the liquid inlet hole 26 and enters the liquid outlet pipe 32 from the position of the through hole 34. Finally, it sprays out from the nozzle position of the liquid outlet pipe 32 to complete the wetting function. And as the liquid continues to spray out, the hydraulic pressure inside the telescopic cylinder 17 decreases. Under the elastic force of the first spring 24, the limiting ring 22 can be pushed to drive the cylinder body 21 to move towards the inside of the movable pipe 19, so that the cylinder body 21 can return to the inside of the movable pipe 19 before the extrusion plate 13 contacts the soil, and the nozzle of the liquid outlet pipe 32 is blocked through the inside of the movable pipe 19, avoiding the situation that the soil blocks the liquid outlet pipe 32 during the extrusion process, which is beneficial to ensuring that each regulating valve can evenly spray the repair liquid, ensuring the uniformity of the wetting function, and further ensuring that each position on the side of the soil heap dam can be effectively wetted.

[0047] As a further embodiment of the present invention, a slot 35 is opened at the end of the cylinder body 21, a spike block 36 is inserted inside the slot 35, and a third spring 37 is fixed between the spike block 36 and the slot 35.

[0048] Specifically, during the process of the extrusion plate 13 extruding the soil, although the stability of the soil embankment can be increased to ensure the stability of the subsequent transverse groove, the compaction effect may affect the normal entry of the repair liquid during the subsequent spraying process. Therefore, in the present invention, a spiked block 36 is provided at the end of the cylinder body 21. During the process of the extrusion plate 13 extruding the soil, the spiked block 36 can penetrate into the soil interior and pierce the compaction layer, ensuring that the subsequent repair liquid can enter from the pierced position. Moreover, the spiked block 36 is elastically supported by the third spring 37. When the spiked block 36 hits a hard object such as a stone, it can also contract and give way to avoid damage to the spiked block 36.

[0049] As a further implementation scheme of the present invention, a sealed airbag 38 is embedded and fixed on the side wall of the cylinder body 21. The sealed airbag 38 contacts the inner wall of the movable pipe 19, and the sealed airbag 38 is internally communicated with the slot 35 through a pipeline.

[0050] Specifically, when the spiked block 36 contacts the soil, it will shrink a short distance into the cylinder body 21 under the blocking action of the soil. During the shrinking process, the gas in the slot 35 can be squeezed into the sealed airbag 38, so that the sealed airbag 38 is inflated and expanded, further blocking the gap between the cylinder body 21 and the movable pipe 19, and avoiding the situation that fine soil or muddy water enters the gap under the extrusion force, resulting in the blockage of the valve body, thereby further ensuring the uniformity of the wetting process.

[0051] As a further implementation scheme of the present invention, the grooving plate 10 includes a first transverse plate 39, an inclined plate 40, and a second transverse plate 41. The first transverse plate 39 is arranged below the second transverse plate 41, and the inclined plate 40 is arranged between the first transverse plate 39 and the second transverse plate 41. One end of the inclined plate 40 is fixed to the first transverse plate 39, and the other end of the inclined plate 40 is fixed to the second transverse plate 41.

[0052] Specifically, the traditional extrusion slotting method will form compacted areas on the inner walls of the slot. In the subsequent process of spraying the repair liquid through the spraying assembly, part of the repair liquid enters the interior of the transverse slot, which is easy to form liquid accumulation. Long-term immersion of the slot body may cause the transverse slot to collapse, affecting the cutoff effect of vertical infiltration, and further affecting the soil repair efficiency. The present invention improves the slotting plate 10. During the process of the slotting plate 10 being inserted into the soil and moving, the first transverse plate 39 is located at the front side, and the soil is first cut and separated. The soil above the first transverse plate 39 gradually contacts with the inclined plate 40, and then Under the guidance and extrusion of the inclined plate 40, it moves upward and is compressed to form the top of the transverse groove, while the soil below the first transverse plate 39 is not squeezed and can still maintain a loose state. In the process of opening the transverse groove, the top of the groove is compacted to form a dense area, which can ensure the horizontal groove's cutoff effect on vertical infiltration, so that the repair liquid above the transverse groove can mainly penetrate horizontally, thereby quickly seeping horizontally, repairing the soil inside the dam body, and improving the repair efficiency. A loose area is formed at the bottom of the groove, which promotes the downward infiltration of the liquid in the groove and avoids the formation of liquid accumulation in the groove, which is beneficial to maintaining the stability of the transverse groove, avoiding the collapse of the groove body, and further ensuring the cutoff effect.

[0053] As a further implementation scheme of the present invention, a clearance groove 42 is provided at the bottom of the first horizontal plate 39, and a sliding plate 43 is vertically slidably connected in the clearance groove 42. A plurality of rake nails 44 are fixed to the bottom surface of the sliding plate 43. A circular hole 45 is provided on the surface of the sliding plate 43. A T-shaped column 46 is inserted into the circular hole 45. The top of the T-shaped column 46 is fixed on the inner wall of the clearance groove 42. A fourth spring 47 is fixed between the T-shaped column 46 and the sliding plate 43. A pushing assembly is provided at one end of the first horizontal plate 39. The pushing assembly is used to push the sliding plate 43 to reset when the slotted plate 10 is reset.

[0054] Specifically, in order to further promote the looseness of the soil at the bottom of the transverse groove, the present invention opens a clearance groove 42 at the bottom of the first transverse plate 39. When the first transverse plate 39 is fully inserted into the soil, under the pulling action of the fourth spring 47, the sliding plate 43 moves downward, thereby driving the rake nails 44 to be inserted into the soil to rake and loosen the soil at the bottom of the groove, further improving the loosening effect of the loose area at the bottom of the groove, thereby further promoting the downward seepage of the liquid in the groove, and further ensuring the stability of the transverse groove.

[0055] As a further embodiment of the present invention, the pushing assembly includes a first strip groove 48 and a second strip groove 49, the first strip groove 48 is opened at the bottom of the first horizontal plate 39, and the second strip groove 49 is opened on the inner wall of the give way groove 42, the first strip groove 48 and the second strip groove 49 are connected, a pushing pin 50 is inserted into the second strip groove 49, and both sides of the pushing pin 50 have guide surfaces, a pushing rod 51 is inserted into the first strip groove 48, and an inclined surface is opened on the bottom surface of the pushing rod 51, an extension plate 52 is fixed to the top of the pushing rod 51, a sixth spring 53 is fixed between the extension plate 52 and the inner wall of the second strip groove 49, and the extension plate 52 is in contact with the guide surface of the pushing pin 50.

[0056] Specifically, when the slotted plate 10 moves toward the outside of the mounting groove 9 and is inserted into the soil, the push rod 51 gradually separates from the mounting groove 9. After the push rod 51 separates from the mounting groove 9, the push rod 51 moves downward under the pulling action of the sixth spring 53, canceling the blocking limit of the push pin 50, so that the push pin 50 loses the pushing action on the sliding plate 43, and the sliding plate 43 can move downward under the pulling action of the fourth spring 47 to squeeze the push pin 50 into the second strip groove 49, and the rake nail 44 is inserted into the soil at the same time. It can be seen from the above working process that before the slotted plate 10 is fully inserted into the soil, the rake nail 44 is retracted in the make way groove 42, which is conducive to preventing the rake nail 44 from extending in advance, resulting in uneven positions of the slots opened, and affecting the stability of the slot body.

[0057] When the slotted plate 10 retreats and resets, the inclined surface on the pushing rod 51 contacts the notch of the mounting groove 9. Under the guiding effect of the inclined surface and the blocking effect of the notch of the mounting groove 9, the pushing rod 51 can move upward and push the guiding surface of the pushing pin 50, so that the pushing pin 50 moves laterally and pushes the sliding plate 43 upward through another guiding surface, thereby completing the reset of the sliding plate 43, and the rake nail 44 shrinks into the inside of the make way groove 42 before contacting the notch of the mounting groove 9, avoiding interference with the retreat of the slotted plate 10.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A spraying device for saline-alkali soil remediation, comprising a mounting shell (1), wherein a rotary tillage roller (2) is mounted inside the mounting shell (1), characterized in that: Also includes: A spray assembly, the spray assembly comprising a water tank (3) and a water pipe (4), the water tank (3) being fixed on the top surface of the mounting shell (1), the water pipe (4) being fixed on the inner wall of the mounting shell (1), the water pipe (4) being fixedly connected to the water tank (3), and a plurality of spray heads (5) being fixed on the surface of the water pipe (4); A trenching block (6), wherein the trenching block (6) has a plurality of members, a push block (7) is fixed to one end of the trenching block (6), the other end of the trenching block (6) is fixedly connected to the mounting shell (1) via a connecting rod (8), and the cross section of the trenching block (6) is trapezoidal; A mounting groove (9), wherein the mounting groove (9) is formed on a side wall of the trenching block (6); A slotted plate (10) is slidably connected to the interior of the mounting groove (9), and a first electric push rod (11) is fixed between the slotted plate (10) and the inner wall of the mounting groove (9).

2. A spraying device for saline-alkali soil remediation according to claim 1, characterized in that: A groove (12) is provided on the side wall of the trenching block (6), an extrusion plate (13) is inserted into the interior of the groove (12), a second electric push rod (14) is fixed between the extrusion plate (13) and the inner wall of the groove (12), a plurality of liquid outlet holes (15) are provided on the surface of the extrusion plate (13), a liquid storage chamber (16) is provided inside the trenching block (6), the liquid storage chamber (16) is connected to the water tank (3) through a pipeline, a soaking assembly is provided between the liquid storage chamber (16) and the liquid outlet hole (15), and the soaking assembly is used to extrude repair liquid to the outside of the liquid outlet hole (15) when the extrusion plate (13) is retracted.

3. A spraying device for saline-alkali soil remediation according to claim 2, characterized in that: The soaking assembly comprises a telescopic tube (17), the telescopic tube (17) being composed of a fixed tube (18) and a movable tube (19), the movable tube (19) being slidably inserted in the interior of the fixed tube (18), the fixed tube (18) being fixed on the inner wall of the groove (12), the interior of the fixed tube (18) being communicated with the interior of the liquid storage chamber (16), the end of the movable tube (19) being fixed in the interior of the liquid outlet hole (15), a one-way valve (20) being fixed in the interior of the fixed tube (18), and a regulating valve being fixed in the interior of the movable tube (19), the regulating valve being used for closing the tube opening of the movable tube (19) when the telescopic tube (17) is extended, and extending the movable tube (19) to open the tube opening of the movable tube (19) when the telescopic tube (17) is shortened.

4. A spraying device for saline-alkali soil remediation according to claim 3, characterized in that: The regulating valve comprises a cylinder (21), the cylinder (21) being inserted into the interior of the movable tube (19), a fixed limiting ring (22) being sleeved on the outer wall of one end of the cylinder (21) close to the fixed tube (18), a positioning ring (23) being slidably sleeved on the outer side of the cylinder (21), a first spring (24) being fixed between the positioning ring (23) and the limiting ring (22), the positioning ring (23) being fixed on the inner wall of the movable tube (19), an regulating cavity (25) being provided inside the cylinder (21), a liquid inlet hole (26) being provided at one end of the regulating cavity (25) close to the fixed tube (18), a liquid inlet hole (26) being inserted into the liquid inlet hole (26) A sealing block (27) is provided, a sliding rod (28) is fixed on the surface of the sealing block (27), a sliding frame (29) is fixed on the end of the sliding rod (28), a second spring (30) is fixed between the sliding frame (29) and the inner wall of the regulating chamber (25), a sliding block (31) is slidably connected to the surface of the sliding frame (29), a liquid outlet pipe (32) is fixed on the surface of the sliding block (31), a sliding groove (33) is provided on the outer wall of the cylinder (21), the liquid outlet pipe (32) is slidably inserted in the sliding groove (33), and a through hole (34) is provided on the surface of the liquid outlet pipe (32) at one end close to the sliding block (31).

5. A spraying device for saline-alkali soil remediation according to claim 4, characterized in that: A slot (35) is provided at the end of the cylinder (21), a spike block (36) is inserted into the slot (35), and a third spring (37) is fixed between the spike block (36) and the slot (35).

6. A spraying device for saline-alkali soil remediation according to claim 5, characterized in that: A sealing airbag (38) is embedded and fixed on the side wall of the cylinder (21), the sealing airbag (38) is in contact with the inner wall of the movable tube (19), and the sealing airbag (38) is connected with the inside of the slot (35) through a pipeline.

7. A spraying device for saline-alkali soil remediation according to claim 1, characterized in that: The slotted plate (10) comprises a first transverse plate (39), an inclined plate (40) and a second transverse plate (41); the first transverse plate (39) is arranged below the second transverse plate (41); the inclined plate (40) is arranged between the first transverse plate (39) and the second transverse plate (41); one end of the inclined plate (40) is fixed to the first transverse plate (39); and the other end of the inclined plate (40) is fixed to the second transverse plate (41).

8. A spraying device for saline-alkali soil remediation according to claim 7, characterized in that: A clearance groove (42) is provided at the bottom of the first transverse plate (39), a sliding plate (43) is vertically slidably connected in the clearance groove (42), a plurality of rake nails (44) are fixed on the bottom surface of the sliding plate (43), a circular hole (45) is provided on the surface of the sliding plate (43), a T-shaped column (46) is inserted into the inside of the circular hole (45), the top of the T-shaped column (46) is fixed on the inner wall of the clearance groove (42), a fourth spring (47) is fixed between the T-shaped column (46) and the sliding plate (43), and a push-up assembly is provided at one end of the first transverse plate (39), and the push-up assembly is used to push the sliding plate (43) to reset when the slotted plate (10) is reset.

9. A spraying device for saline-alkali soil remediation according to claim 8, characterized in that: The push-moving assembly comprises a first strip groove (48) and a second strip groove (49), wherein the first strip groove (48) is provided at the bottom of the first transverse plate (39), and the second strip groove (49) is provided on the inner wall of the give way groove (42), the first strip groove (48) and the second strip groove (49) are connected, a push-moving pin (50) is inserted into the interior of the second strip groove (49), and both sides of the push-moving pin (50) have guide surfaces, a push-moving rod (51) is inserted into the interior of the first strip groove (48), and an inclined surface is provided on the bottom surface of the push-moving rod (51), an extension plate (52) is fixed to the top of the push-moving rod (51), a sixth spring (53) is fixed between the extension plate (52) and the inner wall of the second strip groove (49), and the extension plate (52) contacts the guide surface of the push-moving pin (50).

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