A saline-alkali soil improvement device and method

Abstract

The application provides a saline-alkali soil improvement device and method, and relates to the technical field of saline-alkali soil improvement.The saline-alkali soil improvement device comprises two pipe assemblies arranged in parallel and at intervals, a first isolation piece is arranged between the two pipe assemblies, and a second isolation piece is arranged on the side of each pipe assembly away from the first isolation piece.The two pipe assemblies each comprise a plurality of pipe bodies and a connecting piece connected between two adjacent pipe bodies.The connecting piece comprises a cylinder capable of being sleeved on the end of the two pipe bodies, and a first sliding sleeve and a second sliding sleeve slidably arranged in the cylinder.The cylinder is provided with a water injection hole on the outer periphery of the cylinder, the water injection hole is directed upward from the first isolation piece, the cylinder is provided with a drainage hole on the outer periphery of the cylinder, the drainage hole is directed upward and downward from the first isolation piece respectively, and a first elastic piece is arranged between the first sliding sleeve and the cylinder.The saline-alkali soil improvement device is convenient for water supply and drainage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil improvement device and method. BACKGROUND

[0002] Saline-alkali soil refers to a land plot where the salt contained in the soil affects the normal growth of crops, especially agricultural crops. The formation of saline-alkali soil is mainly due to the redistribution of various soluble salts in the horizontal and vertical directions, which causes the accumulation of salt in the soil surface layer in salt accumulation areas.

[0003] The fundamental reason for the formation of saline-alkali soil is poor water conditions, so during the initial improvement, the focus should be on improving the water conditions of the soil. Generally, it is done in several steps: first, drain salt, wash salt, and reduce the salt content of the soil; then, plant salt-tolerant plants and fertilize the soil; finally, plant crops. The specific improvement measures are: drainage, irrigation and salt washing, silt improvement, rice planting, fertilization and improvement, land leveling, and chemical improvement.

[0004] Among them, the Chinese invention patent with application number 2021116605019 provides a drainage device and saline-alkali soil improvement method, which includes an outer pipe, the outer pipe is a hollow pipe and has a plurality of drainage holes on the pipe wall; an inner pipe is inserted into the outer pipe, the inner pipe is tightly attached to the outer pipe and is in sliding connection; a concave surface, a part of the outer pipe passes through the bottom of the concave surface, and the part of the outer pipe located in the concave surface has drainage holes. Overall, it drains salt from part of the soil and isolates it from other soil, and uses the salt-drained soil to plant crops to gradually improve soil conditions. The invention can improve the soil with less water resources and has a low cost.

[0005] However, the above-mentioned patent still has the following defects: it needs to supply water to the concave surface one by one, and needs to operate the outer pipe one by one to achieve drainage, which is labor-intensive. SUMMARY

[0006] Therefore, the present application provides a saline-alkali soil improvement device and method to at least partially solve the technical problem of high labor intensity in the prior art.

[0007] The technical solution of the present application is as follows:

[0008] In a first aspect, the present application provides a saline-alkali soil improvement device, which includes two pipe assemblies arranged in parallel and spaced apart, a first isolation member is arranged between the two pipe assemblies, and a second isolation member is arranged on the side of each pipe assembly away from the first isolation member.

[0009] Two pipe assemblies each include a plurality of pipe bodies and a connecting member connected between two adjacent pipe bodies; the connecting member includes a barrel capable of being sleeved on the end portions of the two pipe bodies, and a first sliding sleeve and a second sliding sleeve respectively slidably arranged in the barrel; a water injection hole is arranged on the outer periphery of the barrel corresponding to the first sliding sleeve and facing the upper portion of the first partition member, and a water discharge hole is arranged on the outer periphery of the barrel corresponding to the second sliding sleeve and respectively facing the upper portion and the lower portion of the first partition member, and a first elastic member is arranged between the first sliding sleeve and the barrel;

[0010] When water is injected into the pipe assembly from one end of the pipe assembly, the water flow can push the first sliding sleeve to move away from the water injection hole, and push the second sliding sleeve to block the water discharge hole, so that water can enter the first partition member through the water injection hole; when water supply to the pipe assembly is stopped, the first sliding sleeve is pushed by the first elastic member to slide to block the water injection hole; when water is supplied to the pipe assembly from the other end of the pipe assembly, the second sliding sleeve is pushed by the water flow to slide away from the water discharge hole.

[0011] Further, a limiting groove is arranged on the inner wall of the barrel; the first sliding sleeve is slidably arranged in the limiting groove; and a blocking ring is arranged on the inner wall of the end of each first sliding sleeve away from the first elastic member.

[0012] Further, the inner diameter of the blocking ring of each first sliding sleeve gradually decreases along the direction of the water flow pushing the first sliding sleeve to move away from the water injection hole.

[0013] Further, the first elastic member includes a plurality of springs, each spring is uniformly and spacedly arranged around the inner wall of the limiting groove, and abuts between the bottom wall of the limiting groove and the first sliding sleeve.

[0014] Further, an exhaust pipe is arranged on the barrel and parallel to the barrel, the exhaust pipe is in communication with the barrel through a connecting pipe, a plurality of exhaust holes are arranged on the outer periphery of the exhaust pipe; and the intersection of the connecting pipe and the barrel is located on the sliding path of the first sliding sleeve, a through hole is arranged on the first sliding sleeve, and the first sliding sleeve can slide to make the through hole opposite to the intersection or away from the intersection.

[0015] Further, a second elastic member is arranged between the other end of the first sliding sleeve and the barrel relative to the end of the first sliding sleeve where the first elastic member is arranged; when the first sliding sleeve is not pushed by the water flow, the first sliding sleeve blocks the water injection hole, and the through hole is opposite to the intersection.

[0016] Further, the barrel body comprises a base body, and connecting pipes rotatably arranged on the base body and positioned at two opposite ends of the base body; an inner thread is arranged on the inner wall of the connecting pipe, and an outer thread capable of being screwed with the inner thread is arranged on the end of the pipe body.

[0017] Further, the drain hole comprises a square hole above the first isolation piece, and the barrel body is provided with a drain pipe penetrating downward through the first isolation piece, and a filter screen covering the square hole is arranged on the outer side surface of the barrel body.

[0018] In a second aspect, the present application provides a saline-alkali soil improvement method, comprising the following steps:

[0019] Digging a planting groove;

[0020] Laying the saline-alkali soil improvement device as described above in the planting groove; wherein the first isolation piece is laid on the bottom surface of the planting groove, and the two second isolation pieces are laid on the two side walls of the planting groove, respectively;

[0021] Backfilling the excavated soil material into the planting groove;

[0022] Flooding water into the pipe assembly from one end of the pipe assembly to soak the soil material in the planting groove;

[0023] Flooding water into the pipe assembly from the other end of the pipe assembly to make the second sliding sleeve slide away from the drain hole, so that the water in the planting groove is drained; the step is repeated until the soil material in the planting groove meets the planting requirements.

[0024] Further, the step of flooding water into the pipe assembly from one end of the pipe assembly to soak the soil material in the planting groove further comprises the following steps:

[0025] The step of inflating the pipe assembly from one end of the pipe assembly and plugging the other end of the pipe assembly to make the gas drain out of the exhaust hole.

[0026] The working principle and beneficial effects of the present application are as follows:

[0027] The saline-alkali soil improvement device provided by the present application can realize water storage and drainage of the isolation piece by flooding water into different ends of the pipe assembly through the arrangement of the first sliding sleeve and the second sliding sleeve. Specifically, when the water flow makes the first sliding sleeve separate from the water injection hole, the water flow can flow out of the water injection hole to the first isolation piece to soak the soil on the first isolation piece. When the water flow is reversed, the second sliding sleeve can be separated from the drain hole, so that the water on the first isolation piece is drained. Obviously, compared with the prior art, the saline-alkali soil improvement device provided by the present application is more convenient for water supply and drainage. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0029] Figure 1 The utility model provides a saline-alkali soil improvement device for the embodiment of the utility model,

[0030] Figure 2 The utility model provides a pipe assembly's explosion map for the embodiment of the utility model,

[0031] Figure 3 Another angle view of the pipe assembly provided by the embodiment of the utility model,

[0032] Figure 4 The internal structure schematic view of the pipe assembly provided by the embodiment of the utility model,

[0033] Figure 5 For Figure 4 The local enlarged view of C.

[0034] In the figure: 100, pipe assembly;110, pipe body;120, connecting piece;121, connecting pipe;122, first sliding sleeve;1221, baffle ring;123, second sliding sleeve;124, base body;125, first elastic piece, 126, second elastic piece;127, drain pipe;101, water injection hole;102, drainage hole;103, limiting groove;104, through hole, 105, intersection;200, first isolation piece;300, second isolation piece;400, exhaust pipe;401, exhaust hole. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] The present embodiment provides a saline-alkali soil improvement device, referring to Figures 1 to 5 As shown in the figure, it comprises two pipe assemblies 100 arranged in parallel and at intervals, a first isolation piece 200 is arranged between the two pipe assemblies 100, and a second isolation piece 300 is arranged on the side of each pipe assembly 100 away from the first isolation piece 200.

[0037] The two pipe assemblies 100 each include a plurality of pipe bodies 110 and a connector 120 connecting two adjacent pipe bodies 110. The connector 120 includes a cylinder that can be sleeved on the ends of the two pipe bodies 110, and a first sliding sleeve 122 and a second sliding sleeve 123 that are slidably disposed in the cylinder. Corresponding to the first sliding sleeve 122, a water injection hole 101 facing upward to the first isolation member 200 is provided on the outer periphery of the cylinder. Corresponding to the second sliding sleeve 123, a drain hole 102 facing upward and downward to the first isolation member 200 is provided on the outer periphery of the cylinder. A first elastic member 125 is provided between the first sliding sleeve 122 and the cylinder.

[0038] From one end of the pipe assembly 100, this embodiment, for example Figure 4 When water is flushed into the pipe assembly 100 from end A, the water flow can push the first sliding sleeve 122 away from the water inlet 101 and push the second sliding sleeve 123 to block the drain hole 102. Water can enter the first isolator 200 through the water inlet 101. When the water supply to the pipe assembly 100 is stopped, the first sliding sleeve 122 is pushed by the first elastic member 125 to slide to block the water inlet 101; from the other end of the pipe assembly 100, such as Figure 4 When water is supplied to the pipe assembly 100 at end B, the second sliding sleeve 123 can be pushed by the water flow to slide away from the drain hole 102.

[0039] Overall, such as Figure 1 As shown, the saline-alkali land improvement device provided in this embodiment can be formed by a first isolation member 200 and two second isolation members 300, creating a trapezoidal improvement area for placing the soil to be improved and separating it from the surrounding soil. It should be noted that waterproof leak-proof devices are also provided at both ends of the improvement area; however, these are not shown in the accompanying drawings for ease of understanding.

[0040] Water can be injected into one end of the two pipe assemblies 100. The water pushes the first sliding sleeve 122 away from the water injection hole 101, allowing it to enter the improved area and soak the soil within. After soaking the soil in the improved area for a period of time, water can be flushed into the pipe assembly 100 from the other end. The water flow pushes the second sliding sleeve 123 away from the drain hole 102, allowing the water in the improved area to drain out through the drain hole 102. Through repeated soaking and drainage as described above, the soil in the improved area can be improved and used for planting crops.

[0041] In terms of specific structure, refer to Figure 2As shown, the barrel body of the embodiment comprises a base body 124, and connecting pipes 121 rotatably arranged on the base body 124 and located at two opposite ends of the base body 124; an inner thread is arranged on the inner wall of the connecting pipe 121, and an outer thread capable of being screwed with the inner thread is arranged on the end of the pipe body 110. By arranging the barrel body structure, when the barrel body and the pipe body 110 are connected, the connecting pipe 121 can be rotated to conveniently realize the connection between the barrel body and the pipe body 110. It should be noted that the inner thread and the outer thread are not shown in the drawings of the embodiment because they do not affect understanding.

[0042] In some embodiments, the barrel body and the pipe body 110 can also be connected in a plug-in manner, that is, the pipe body 110 is plugged into the barrel body, or the barrel body is plugged into the pipe body 110.

[0043] In the embodiment, referring to Figure 4 As shown, a limiting groove 103 is arranged on the inner wall of the barrel body; the first sliding sleeve 122 is specifically capable of sliding in the limiting groove 103, and a retaining ring 1221 is arranged on the inner wall of the end of each first sliding sleeve 122 away from the first elastic member 125.

[0044] In the embodiment, referring to Figure 4 As shown, the first elastic member 125 comprises a plurality of springs, each spring is arranged around the inner wall of the limiting groove 103 uniformly and at intervals; and each spring abuts between the bottom wall of the limiting groove 103 and the first sliding sleeve 122.

[0045] In the embodiment, by arranging the springs, the first sliding sleeves 122 can be pushed back by the springs after the water flow stops pushing the first sliding sleeves 122, so that the first sliding sleeves 122 block the water injection holes 101, and the water in the improved area is prevented from being discharged through the water injection holes 101, so as to keep the water in the improved area to soak the soil.

[0046] In the embodiment, along the direction of the water flow pushing the first sliding sleeves 122 away from the water injection holes 101, the diameter of the retaining ring 1221 of each first sliding sleeve 122 gradually decreases. Since the friction of the pipe body 110 to the water flow can reduce the impact force of the water flow, and the first sliding sleeve 122 is pushed by the first elastic member 125, that is, the resistance of the water flow pushing the first sliding sleeve 122 is large, in order to enable the water flow to push each first sliding sleeve 122, in the embodiment, by arranging the retaining ring 1221 of each first sliding sleeve 122 in the above manner, along the direction of the water flow, the impact force of the water flow gradually decreases, but the area of the retaining ring 1221 gradually increases, so that each first sliding sleeve 122 can be better pushed. It should be noted that the change in the inner diameter of each retaining ring 1221 is not shown in the drawings of the embodiment because it does not affect understanding.

[0047] Referring to Figure 2 and Figure 3As shown, in this embodiment, each cylinder is provided with an exhaust pipe 400 parallel to the cylinder. The exhaust pipe 400 is connected to the cylinder via a connecting pipe 121, and multiple exhaust holes 401 are provided on the outer periphery of the exhaust pipe 400. The intersection 105 between the connecting pipe 121 and the cylinder is located on the sliding path of the first sliding sleeve 122, and the first sliding sleeve 122 is provided with a through hole 104. The first sliding sleeve 122 can slide to make the through hole 104 face the intersection 105, or disengage from the intersection 105.

[0048] In this embodiment, by setting up the aforementioned exhaust pipe 400, after filling the improved area with water, as... Figure 5 As shown, the first sliding sleeve 122 can be slid until the through hole 104 on the first sliding sleeve 122 is opposite to the intersection 105. After that, high-pressure air can be injected into the pipe body 110. The air enters the exhaust pipe 400 through each intersection 105 and is discharged into the improvement area through the exhaust hole 401 on the exhaust pipe 400. The air discharged from the exhaust hole 401 can disturb the water in the improvement area, so that the water and soil can fully contact each other, thereby better dissolving the salt in the soil and dissolving more salt per unit amount of water. Therefore, the amount of water required to improve a unit amount of soil can be reduced.

[0049] In this embodiment, reference Figure 5 As shown, a first elastic element 125 is provided between the first sliding sleeve 122 and the cylinder, and a second elastic element 126 is provided between the other end of the first sliding sleeve 122 and the cylinder. In its natural state, when the thrust exerted by the first elastic element 125 and the second elastic element 126 on the first sliding sleeve 122 is balanced, the first sliding sleeve 122 blocks the water injection hole 101, and the aforementioned through hole 104 is opposite to the intersection 105. When water is injected into the improved area, the water flow pushes the first sliding sleeve 122 to compress the first elastic element 125, and the first sliding sleeve 122 slides until the water injection hole 101 is opened, and the through hole 104 is misaligned with the intersection 105. When the water flow pushes the second sliding sleeve 123 away from the drain hole 102, the water flow will simultaneously push the first sliding sleeve 122 to compress the second elastic element 126, causing the through hole 104 to be misaligned with the intersection 105.

[0050] In general, only when there is no water flow will the junction 105 be opposite to the through hole 104, allowing gas to enter the exhaust pipe 400 through the through hole 104 and the junction 105 and be discharged from the exhaust hole 401. When water flows in any direction within the pipe body 110, it will push the first sliding sleeve 122 to slide so that the through hole 104 and the junction 105 are misaligned, thus preventing the exhaust pipe 400 from excessively reducing the water flow pressure.

[0051] refer to Figures 2 to 4As shown, the drain hole 102 of the embodiment is square, and a filter screen covering the drain hole 102 is arranged on the outer side of the cylinder. It should be noted that the filter screen is not shown in the drawings of the embodiment since it does not affect the understanding. It should also be noted that the first partition 200 and the two second partitions 300 are made of a whole piece of material to avoid water leakage; in addition to the drain hole 102 above the first partition 200, a drain pipe 127 is arranged on the connecting pipe 121 and penetrates the first partition 200 downwardly, based on the structure, the water in the improved area can enter the connecting pipe 121 through the drain hole 102 above the first partition 200 and be discharged downwardly through the drain pipe 127.

[0052] In some embodiments, the drain hole 102 described above can also be circular or other shapes.

[0053] In the embodiment, the first partition 200 and the second partition 300 described above are made of plastic cloth.

[0054] In some embodiments, the first partition 200 and the second partition 300 described above can also be cloth-like made of other water-proof materials.

[0055] The embodiment also provides a method for improving saline-alkali soil, which comprises the following steps:

[0056] Digging a planting groove;

[0057] Laying the saline-alkali soil improvement device as described above in the planting groove; wherein the first partition 200 is laid on the bottom surface of the planting groove, and the two second partitions 300 are laid on the two side walls of the planting groove, respectively;

[0058] Backfilling the excavated soil material into the planting groove;

[0059] Flooding water into the pipe assembly 100 from one end of the pipe assembly 100 to soak the soil material in the planting groove; filling high-pressure gas into the pipe assembly 100 from one end of the pipe assembly 100, and the high-pressure gas is discharged from the exhaust hole 401 on the exhaust pipe 400 to disturb the water in the improved area; flooding water into the pipe assembly 100 from the other end of the pipe assembly 100 to make the second sliding sleeve 123 slide away from the drain hole 102 to discharge the water in the planting groove; repeating the step until the soil material in the planting groove meets the planting requirements.

[0060] In the embodiment, the soaking time described above is 9-24h.

[0061] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for improving saline-alkali land, characterized in that: It includes two parallel and spaced-apart pipe assemblies (100), a first spacer (200) is provided between the two pipe assemblies (100), and a second spacer (300) is provided on the side of the two pipe assemblies (100) away from the first spacer (200). The two pipe assemblies (100) each include a plurality of pipe bodies (110) and a connector (120) connecting two adjacent pipe bodies (110); the connector (120) includes a cylindrical body that can be sleeved on the ends of the two pipe bodies (110), and a first sliding sleeve and a second sliding sleeve (123) respectively slidably disposed in the cylindrical body; corresponding to the first sliding sleeve, a water injection hole (101) facing the top of the first isolation member (200) is provided on the outer periphery of the cylindrical body, and corresponding to the second sliding sleeve (123), a drain hole (102) facing the top and bottom of the first isolation member (200) is provided on the outer periphery of the cylindrical body, and a first elastic member (125) is provided between the first sliding sleeve and the cylindrical body. When water is flushed into the pipe assembly (100) from one end, the water flow can push the first sliding sleeve away from the water inlet (101) and push the second sliding sleeve (123) to block the drain hole (102), and water can enter the first isolation member (200) through the water inlet (101); when water supply to the pipe assembly (100) is stopped, the first sliding sleeve is pushed by the first elastic member (125) to slide to block the water inlet (101); when water is supplied into the pipe assembly (100) from the other end, the second sliding sleeve (123) is pushed by the water flow to slide away from the drain hole (102).

2. The saline-alkali land improvement device according to claim 1, characterized in that, A limiting groove (103) is provided on the inner wall of the cylinder; the first sliding sleeve is slidably disposed in the limiting groove (103); and a retaining ring is provided on the inner wall of the end of each first sliding sleeve away from the first elastic member (125).

3. The saline-alkali land improvement device according to claim 2, characterized in that, Along the direction of water flow that pushes the first sliding sleeve away from the water injection hole (101), the inner diameter of the retaining ring of each first sliding sleeve gradually decreases.

4. The saline-alkali land improvement device according to claim 2, characterized in that, The first elastic element (125) includes a plurality of springs, each spring ring being evenly and spaced apart in the circumferential direction of the inner wall of the limiting groove (103), and abutting between the bottom wall of the limiting groove (103) and the first sliding sleeve.

5. The saline-alkali land improvement device according to claim 1, characterized in that, It also includes an exhaust pipe (400) disposed on the cylinder and parallel to the cylinder, the exhaust pipe (400) being connected to the cylinder via a connecting pipe (121), and a plurality of exhaust holes (401) being provided on the outer periphery of the exhaust pipe (400); and the junction (105) between the connecting pipe (121) and the cylinder is located on the sliding path of the first sliding sleeve, the first sliding sleeve being provided with a through hole (104), and the first sliding sleeve being able to slide so that the through hole (104) is opposite to the junction (105), or disengage from the junction (105).

6. The saline-alkali land improvement device according to claim 5, characterized in that, A second elastic element (126) is provided between the other end of the first sliding sleeve and the cylinder, relative to the end of the first sliding sleeve with the first elastic element (125); when the first sliding sleeve is not pushed by the water flow, the first sliding sleeve blocks the water injection hole (101), and the through hole (104) is opposite to the intersection (105).

7. The saline-alkali land improvement device according to claim 1, characterized in that, The cylinder includes a base (124) and a connecting pipe (121) rotatably disposed on the base (124) and disposed at two opposite ends of the base (124); the inner wall of the connecting pipe (121) is provided with an internal thread, and the end of the cylinder (110) is provided with an external thread that can be screwed into the internal thread.

8. The saline-alkali land improvement device according to claim 1, characterized in that, The drain hole (102) includes a square hole located above the first isolation member (200), and the cylinder is provided with a drain pipe (127) that extends downward through the first isolation member (200), and a filter screen covering the square hole is provided on the outer side of the cylinder.

9. A method for improving saline-alkali land, characterized in that, Includes the following steps: Dig planting troughs; The saline-alkali land improvement device as described in any one of claims 1 to 8 is laid in the planting trough; wherein, the first isolation member (200) is laid on the bottom surface of the planting trough, and the two second isolation members (300) are respectively laid on the two side walls of the planting trough; Backfill the excavated soil into the planting trough; Water is flushed into the pipe assembly (100) from one end to soak the soil in the planting trough; Water is flushed into the pipe assembly (100) from the other end of the pipe assembly (100) to make the second sliding sleeve (123) slide away from the drain hole (102) and drain the water in the planting trough; repeat this step until the soil in the planting trough meets the planting requirements.

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